CN113719281B - Device and method for simulating transient electromagnetic response of hydraulic fracturing formation drilling - Google Patents
Device and method for simulating transient electromagnetic response of hydraulic fracturing formation drilling Download PDFInfo
- Publication number
- CN113719281B CN113719281B CN202111180589.4A CN202111180589A CN113719281B CN 113719281 B CN113719281 B CN 113719281B CN 202111180589 A CN202111180589 A CN 202111180589A CN 113719281 B CN113719281 B CN 113719281B
- Authority
- CN
- China
- Prior art keywords
- silica gel
- gel cavity
- cuboid
- elliptic
- fracturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001052 transient effect Effects 0.000 title claims abstract description 87
- 238000005553 drilling Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 title claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 114
- 239000000741 silica gel Substances 0.000 claims abstract description 114
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 114
- 238000004088 simulation Methods 0.000 claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000036544 posture Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000013210 evaluation model Methods 0.000 abstract description 3
- 238000005755 formation reaction Methods 0.000 description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 230000033558 biomineral tissue development Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a device and a method for simulating transient electromagnetic response, belongs to the technical field of geophysical exploration physical simulation devices, and particularly relates to a device and a method for simulating transient electromagnetic response of hydraulic fracturing stratum drilling. According to the device and the method, the silica gel cavity is adopted to simulate the fracturing fracture, the simulation results define the drilling transient electromagnetic detection response characteristics in the stratum of the hydraulic fracturing fracture with different parameters, and the foundation for the drilling transient electromagnetic evaluation explanation of the stratum of the hydraulic fracturing fracture is laid. The method can also be used for establishing a fracture zone stratum drilling transient electromagnetic interpretation evaluation model, and further is used for quantitatively calculating the hard top plate disaster advanced treatment and the gas extraction efficiency.
Description
Technical Field
The invention relates to a device and a method for simulating transient electromagnetic response, belongs to the technical field of geophysical exploration physical simulation devices, and particularly relates to a device and a method for simulating transient electromagnetic response of hydraulic fracturing stratum drilling.
Background
The hydraulic fracturing technology of the mine is an important means for advanced disaster management of the hard roof and gas recovery efficiency improvement. The mine drilling transient electromagnetic detection technology is a full-space electromagnetic method detection technology, and because the detection is performed in a drilling hole, the defect that the conventional mine transient electromagnetic is interfered by the roadway environment is avoided, and in addition, the drilling transient electromagnetic has the characteristic of being closer to a detection target body, so that the hydraulic fracturing crack can be detected by adopting the drilling transient electromagnetic technology. But the drilling transient electromagnetic detection technology starts later and is mainly used for detecting large water-guiding/water-containing structures and goafs, and is less used in the field of detecting hydraulic fracturing cracks. At present, research and design of a simulation device for hydraulic fracture stratum drilling transient electromagnetic response are lacking, a conventional mine transient electromagnetic detection construction water tank model is poor in fit with hydraulic fracture stratum drilling transient electromagnetic conditions, quantitative research of hydraulic fracture parameter changes on drilling transient electromagnetic influence is prevented, and quantitative evaluation of drilling transient electromagnetic detection hydraulic fracture parameters is affected. In the field of petroleum logging, the prior art provides a fracture induction logging response simulator, such as CN107227952B.
However, when the invention is used for hydraulic fracturing formation drilling transient electromagnetic response water tank simulation, the following defects exist:
(1) The induction logging in the frequency domain is obviously different from the drilling transient electromagnetic detection principle in the time domain, the induction logging adopts a stable time harmonic signal of 20KHz, and the drilling transient electromagnetic detection adopts a pulse excitation source, so that if drilling transient electromagnetic is arranged at the center of a crack simulation assembly formed by a metal net group, the electromagnetic induction law shows that the intensity of a vortex field formed by an instrument emission signal in the metal net is far greater than that of a vortex field formed by hydraulic fracturing cracks, and great interference is caused to useful signal extraction; furthermore, corrosion of the metal mesh components in sodium chloride solution occurs, which chemical changes interfere with the simulation results.
(2) There is a significant difference between fracture-type formations and hydraulically fractured formations, where the extent of the fracture in a fracture-type formation is much greater than the diameter of the wellbore, and the fracture can be considered approximately an infinite circle intersecting the wellbore. In hydraulically fractured formations, hydraulic fractures extend in a particular direction, and thus the devices disclosed in the prior art produce significant errors in simulating hydraulic fracture formation borehole transient electromagnetic responses.
Disclosure of Invention
In order to solve the problems, the invention provides a device and a method for simulating the transient electromagnetic response of hydraulic fracturing stratum drilling, which are used for accurately quantifying the response of the simulated drilling transient electromagnetic detection hydraulic fracturing cracks.
According to one embodiment of the invention, there is provided a hydraulic fracture formation drilling transient electromagnetic response flume simulation apparatus, comprising:
the water tank is used for containing a solution with controllable conductivity and is used for simulating bedrock of stratum with different conductivity;
the hydraulic fracture simulation assembly is composed of a fracture skeleton net, an outer positioning bearing, a cuboid silica gel cavity, an elliptic silica gel cavity and a hinge block and is used for simulating different hydraulic fracture cracks, and different postures and positions of the cuboid silica gel cavity and the elliptic silica gel cavity can be controlled through the outer positioning bearing;
The drilling transient electromagnetic simulation assembly simulates a transient electromagnetic detection instrument and a matched assembly and is used for detecting a hydraulic fracture stratum;
the simulated drilling and the simulated measuring drilling are used for providing a drilling transient electromagnetic detection instrument for detecting a place;
the number of hydraulic fracture simulating components is variable.
The cuboid silica gel cavity is used for containing solution with controllable conductivity and is used for simulating cuboid-shaped hydraulic fracturing cracks with different conductivities, the length of the cuboid silica gel cavity, the width of the cuboid silica gel cavity, the height of the cuboid silica gel cavity and the conductivity size of the cuboid silica gel cavity, and the position of the cuboid silica gel cavity are variable.
The elliptic silica gel cavity is used for containing a solution with controllable conductivity and simulating elliptic hydraulic fracture cracks with different conductivities, and the length of the elliptic silica gel cavity, the width of the elliptic silica gel cavity, the height of the elliptic silica gel cavity, the conductivity of the elliptic silica gel cavity and the position of the elliptic silica gel cavity are variable.
The simulation device also comprises an instrument rotating connecting rod for pushing and pulling and rotating the transient electromagnetic simulation device.
The simulation device also comprises an instrument eccentric and rotary positioning bearing for controlling the centering and positioning of the transient electromagnetic simulation device.
The simulation device further comprises acquisition means for acquiring and recording transient electromagnetic detection signals.
The beneficial effects of the invention are as follows: the device fills the blank of the hydraulic fracture stratum drilling transient electromagnetic detection quantitative simulation device, the simulation result of the device confirms the drilling transient electromagnetic detection response characteristics in the hydraulic fracture stratum with different parameters, and the foundation of hydraulic fracture stratum drilling transient electromagnetic evaluation and explanation is laid. The method can also be used for establishing a fracture zone stratum drilling transient electromagnetic interpretation evaluation model, and further is used for quantitatively calculating the hard top plate disaster advanced treatment and the gas extraction efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings required in the embodiments or the description of the prior art:
FIG. 1 is a schematic diagram of a hydraulic fracturing formation borehole transient electromagnetic response flume simulation apparatus in accordance with one embodiment of the invention;
FIG. 2 is a schematic illustration of a fracture network structure according to one embodiment of the present invention;
FIG. 3 is a schematic illustration of a fracture network structure according to one embodiment of the present invention;
FIG. 4 is a schematic illustration of a cuboid silica gel cavity mono-wing in a hydraulic fracturing formation borehole transient electromagnetic response water tank simulation apparatus in accordance with one embodiment of the present invention;
FIG. 5 is a schematic illustration of an elliptical silica gel cavity single wing in a hydraulic fracturing formation borehole transient electromagnetic response flume simulation apparatus in accordance with one embodiment of the invention;
wherein, 1, a water tank; 2. simulating drilling; 3. drilling transient electromagnetic instruments; 4. a control end outside the hole; 5. an instrument rotating connecting rod; 6. an instrument eccentric and rotary positioning bearing; 7. a fracture skeleton network; 8. an outer positioning bearing; 9. a seal ring; 10. a cuboid silica gel cavity; an 11-ellipse silica gel cavity; 12. and a hinge block.
Detailed Description
The present invention will be described in detail below with reference to the attached drawings and the detailed description, thereby solving the technical problems by how the present invention is applied. It should be noted that, as long as no conflict is formed, each embodiment of the present invention and each feature of each embodiment may be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
As shown in fig. 1, the hydraulic fracturing formation drilling transient electromagnetic response water tank simulation device comprises a water tank 1, a hydraulic fracturing fracture simulation assembly, a drilling transient electromagnetic instrument simulation assembly and a simulated drilling 2. The water tank 1 is used for containing a solution with controllable mineralization degree and is used for simulating undisturbed stratum with different electric conductivity; the crack simulation assembly consists of a crack skeleton net 7, an outer positioning bearing 8, a cuboid silica gel cavity 10, an elliptic silica gel cavity 11 and a hinging speed 12, and is arranged in a water tank 1 to simulate hydraulic fracture; the device comprises a device 3 (an actual device can be used) for simulating measurement, a device rotary connecting rod 5 for pushing and pulling and rotating transient electromagnetic simulation devices, and a device eccentric and rotary positioning bearing 6 for righting the device and controlling rotation; the borehole simulation assembly consists of a simulated borehole 2 and a sealing ring 9.
According to the hydraulic fracture stratum drilling transient electromagnetic response water tank simulation device, the influence of the resistivity of different undisturbed stratum on the hydraulic fracture stratum drilling transient electromagnetic response is simulated by adjusting the resistivity of the filling solution in the water tank 1, the hydraulic fracture stratum drilling transient electromagnetic response simulation of different resistivity, inclination angle and development length is realized by adjusting the physical parameters of the hydraulic fracture simulation assembly, and the hydraulic fracture stratum drilling transient electromagnetic response quantitative simulation measurement difficulty of the hydraulic fracture parameter drilling transient electromagnetic response is solved.
As shown in fig. 1, the water tank 1 simulating an undisturbed stratum can be a cubic water tank, and is filled with a distilled water solution with controllable mineralization degree so as to simulate the conductivity of stratum bedrock with different resistivity. For example, the water tank 1 is filled with a sodium chloride solution of which the mineralization degree is controllable, and the concentration of sodium chloride is adjusted so that the solution resistivity becomes equal to the bedrock resistivity.
In one embodiment of the invention, the crack skeleton net 7 in the crack simulation assembly is made of PVC material and is a carrier for hinging the cuboid silica gel cavity 10 and the elliptic silica gel cavity 11, wherein a circular gap is reserved in the center of the crack skeleton net 7, and the positioning bearing 8 is fixed on the periphery of the simulated drilling hole 2, penetrates through the central gap of the crack skeleton net 7 and forms hinging.
The cuboid silica gel cavity 10 and the elliptic silica gel cavity 11 are made of silica gel, a columnar gap for penetrating through the simulated drilling hole 2 is reserved in the center, sodium chloride solution with controllable conductivity is filled in the columnar gap, the length, the width and the height of the columnar silica gel cavity and the resistivity of the columnar silica gel cavity can be selected according to simulation requirements, and hydraulic fracturing cracks with different cracking widths, heights, extension lengths and resistivities can be simulated.
The cuboid silica gel cavity 10 and the elliptic silica gel cavity 11 are fixed on the crack skeleton net 7 by the hinge blocks 12, wherein the number and the positions of the cuboid silica gel cavity 10 and the elliptic silica gel cavity 11 can be adjusted according to actual requirements. The fracture skeleton net 7 can be rotated according to the simulation requirement, and the fracture can be fixed at a target simulation position through the positioning bearing 8. In addition, one or more fracture simulation components may be added to the simulation device to simulate borehole transient electromagnetic response when multiple locations of hydraulic fracture coupling, depending on the actual requirements.
Case 1: when adopting the kart model to simulate hydraulic fracturing crack and carrying out drilling transient electromagnetic response simulation, adopt cuboid silica gel cavity to simulate hydraulic fracturing crack, cuboid silica gel cavity center leaves the column vacancy that is used for passing simulation drilling 2 and outer positioning bearing 8, and the height of cuboid silica gel is hydraulic fracturing purpose horizon thickness, and length and the width of cuboid silica gel are calculated by hydraulic fracturing crack kart model and are obtained:
Wherein, the length of cuboid silica gel cavity is:
wherein L is the length of the cuboid silica gel;
Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
H is the height of the cuboid silica gel cavity;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
t is the time length of a hydraulic fracturing pump, and taking parameters during actual fracturing under the well;
The width of the cuboid silica gel cavity is:
Wherein w is the width of the cuboid silica gel;
v is poisson ratio, and the actual parameters of the stratum are taken;
mu is the viscosity of the fracturing fluid, and taking the parameters of the actual fracturing fluid in the well;
Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
g is the shearing quantity, and taking parameters during actual fracturing under the well;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
H is the height of the cuboid silica gel cavity;
and t is the time length of the hydraulic fracturing pump, and taking parameters during actual fracturing under the well.
Case 2: when the KGD model is adopted to simulate hydraulic fracture cracks and carry out drilling transient electromagnetic response simulation, an elliptic silica gel cavity is adopted to simulate the hydraulic fracture cracks, a columnar gap for penetrating through the simulated drilling holes 2 and the outer positioning bearing 8 is reserved in the center of the elliptic silica gel cavity, the height of the elliptic silica gel cavity is the thickness of a hydraulic fracture target layer, and the width and the length of the elliptic silica gel cavity are obtained by joint calculation of the hydraulic fracture crack KGD model and the Kate model:
wherein, the width of oval silica gel cavity is:
wherein w is the width of the elliptic silica gel cavity;
v is poisson ratio, and the actual parameters of the stratum are taken;
mu is the viscosity of the fracturing fluid, and taking the parameters of the actual fracturing fluid in the well;
Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
g is the shearing quantity, and taking parameters during actual fracturing under the well;
h is the height of the elliptic silica gel cavity;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
Taking parameters during actual fracturing in the well as average pressure in the seam;
And P W, bottom hole pressure, and taking parameters during actual fracturing under the well.
The length of the elliptic silica gel cavity is as follows:
Wherein Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
h is the height of the elliptic silica gel cavity;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
w is the width of the elliptic silica gel cavity;
S P is the primary filtration loss, and taking parameters during actual fracturing under the well;
ercf (x) is an error compensation function of x and is queried according to a mathematical formula table.
In one embodiment of the invention, the simulated borehole 2 is simulated by a hollow tube of PVC material having an inside diameter that corresponds to the borehole hole diameter. In order to achieve the purpose of increasing and decreasing the crack simulation assembly according to actual simulation requirements, the drilling simulation assembly 2 is transversely arranged in a reserved groove of the water tank 1, and in order to avoid outflow of liquid in the water tank 1 from the groove between the simulation drilling assembly 2 and the water tank 1, a sealing ring 9 made of nitrile rubber is used for sealing.
In order to avoid eccentric measurement errors caused by deviation of the drilling transient electromagnetic instrument from the drilling center, the purpose that different angles with cracks can be achieved through a rotary instrument is achieved, and an instrument eccentric and rotary positioning bearing 6 is used for supporting between the drilling transient electromagnetic instrument 3 and the simulated drilling 2. Meanwhile, in order to achieve the purpose of moving and rotating the drilling transient electromagnetic instrument 3, instrument rotating connecting rods 5 are connected to two ends of the drilling transient electromagnetic instrument 3 and are used for moving and rotating the drilling transient electromagnetic instrument 3. The working condition state of the drilling transient electromagnetic instrument 3 is controlled by the out-hole control end 4.
The hydraulic fracturing stratum drilling transient electromagnetic response water tank simulation device is simple in structure and easy to realize, and hydraulic fracturing fracture drilling transient electromagnetic responses with different resistivities can be simulated by selecting filling liquids in columnar silica gel cavities and fan-shaped silica gel cavities with different conductivity; drilling transient electromagnetic response of hydraulic fracturing cracks of different lengths, widths and heights is simulated by adjusting the length, width and height of a cuboid silica gel cavity; the drilling transient electromagnetic response of the hydraulic fracturing cracks of the KGD model with different crack lengths, widths and heights is simulated by adjusting the opening angle and the sector radius of the elliptic silica gel cavity; the purpose of changing deflection angles of the cuboid silica gel cavity and the elliptic silica gel cavity is achieved by adjusting the eccentric and rotary positioning bearings of the outer positioning bearing and the instrument, and drilling transient electromagnetic response when the hydraulic fracturing crack and the detection hole are in different angles is simulated; simulating the influence of different bedrock conductivities on the transient electromagnetic response of hydraulic fracture drilling by adjusting the concentration of the water tank filling solution; drilling transient electromagnetic response of hydraulic fracture coupling at a plurality of different positions can be realized through increasing and decreasing the cuboid silica gel cavity and the elliptic silica gel cavity of the fracture simulation assembly, and the problems of drilling transient electromagnetic response characteristic quantitative simulation measurement when the mutual influence and coupling relation between the hydraulic fracture and the detection hole are different in angle when a plurality of hydraulic fracture exist are solved.
The hydraulic fracture drilling transient electromagnetic response simulation device fills the blank of the hydraulic fracture response quantitative simulation device for drilling transient electromagnetic detection, the simulation results of the hydraulic fracture drilling transient electromagnetic response simulation device for hydraulic fracture drilling transient electromagnetic response characteristics of different parameters are clear, and the foundation for evaluation and explanation of the hydraulic fracture for drilling transient electromagnetic detection is laid. The method can be used for establishing a hydraulic fracture drilling transient electromagnetic interpretation evaluation model, further is used for quantitatively evaluating the disaster advanced treatment of the hard top plate and the gas extraction efficiency, and can also be used for drilling transient electromagnetic numerical simulation result calibration, drilling transient electromagnetic method principle teaching and other aspects.
Claims (6)
1. A method for simulating a hydraulic fracturing formation borehole transient electromagnetic response, comprising:
the water tank is used for containing a solution with controllable conductivity and is used for simulating bedrock of stratum with different conductivity;
the hydraulic fracture simulation assembly is composed of a fracture skeleton net, an outer positioning bearing, a cuboid silica gel cavity, an elliptic silica gel cavity and a hinge block and is used for simulating different hydraulic fracture cracks, and different postures and positions of the cuboid silica gel cavity and the elliptic silica gel cavity can be controlled through the outer positioning bearing;
The drilling transient electromagnetic simulation assembly simulates a transient electromagnetic detection instrument and a matched assembly and is used for detecting a hydraulic fracture stratum;
the simulated drilling and the simulated measuring drilling are used for providing a drilling transient electromagnetic detection instrument for detecting a place;
The number of the hydraulic fracture simulation components is variable;
The cuboid silica gel cavity is used for containing a solution with controllable conductivity and is used for simulating cuboid-shaped hydraulic fracture cracks with different conductivities, the length of the cuboid silica gel cavity, the width of the cuboid silica gel cavity, the height of the cuboid silica gel cavity, the conductivity of the cuboid silica gel cavity and the position of the cuboid silica gel cavity are variable;
The elliptic silica gel cavity is used for containing a solution with controllable conductivity and simulating elliptic hydraulic fracture cracks with different conductivities, the length of the elliptic silica gel cavity, the width of the elliptic silica gel cavity, the height of the elliptic silica gel cavity, the conductivity of the elliptic silica gel cavity and the position of the elliptic silica gel cavity are variable;
and simulating a hydraulic fracturing fracture by adopting a Katt model;
When the hydraulic fracturing crack is simulated by adopting the Kate model and the drilling transient electromagnetic response simulation is carried out, the hydraulic fracturing crack is simulated by adopting a cuboid silica gel cavity, a columnar gap for penetrating through a simulated drilling hole and an external positioning bearing is reserved in the center of the cuboid silica gel cavity, the height of the cuboid silica gel is the thickness of a hydraulic fracturing target layer, and the length and the width of the cuboid silica gel are calculated by the hydraulic fracturing crack Kate model:
Wherein, the length of cuboid silica gel cavity is:
wherein L is the length of the cuboid silica gel;
Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
H is the height of the cuboid silica gel cavity;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
t is the time length of a hydraulic fracturing pump, and taking parameters during actual fracturing under the well;
The width of the cuboid silica gel cavity is:
Wherein w is the width of the cuboid silica gel;
v is poisson ratio, and the actual parameters of the stratum are taken;
mu is the viscosity of the fracturing fluid, and taking the parameters of the actual fracturing fluid in the well;
Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
g is the shearing quantity, and taking parameters during actual fracturing under the well;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
H is the height of the cuboid silica gel cavity;
and t is the time length of the hydraulic fracturing pump, and taking parameters during actual fracturing under the well.
2. A method for simulating a hydraulic fracturing formation borehole transient electromagnetic response according to claim 1, wherein said second dielectric is different from said first dielectric.
3. An apparatus for simulating a transient electromagnetic response of a borehole in a hydraulically fractured formation according to claim 1, wherein the fracture skeletal network is secured to the periphery of the simulated borehole by externally positioned bearings.
4. A method for simulating a hydraulic fracturing formation borehole transient electromagnetic response, comprising:
the water tank is used for containing a solution with controllable conductivity and is used for simulating bedrock of stratum with different conductivity;
the hydraulic fracture simulation assembly is composed of a fracture skeleton net, an outer positioning bearing, a cuboid silica gel cavity, an elliptic silica gel cavity and a hinge block and is used for simulating different hydraulic fracture cracks, and different postures and positions of the cuboid silica gel cavity and the elliptic silica gel cavity can be controlled through the outer positioning bearing;
The drilling transient electromagnetic simulation assembly simulates a transient electromagnetic detection instrument and a matched assembly and is used for detecting a hydraulic fracture stratum;
the simulated drilling and the simulated measuring drilling are used for providing a drilling transient electromagnetic detection instrument for detecting a place;
The number of the hydraulic fracture simulation components is variable;
The cuboid silica gel cavity is used for containing a solution with controllable conductivity and is used for simulating cuboid-shaped hydraulic fracture cracks with different conductivities, the length of the cuboid silica gel cavity, the width of the cuboid silica gel cavity, the height of the cuboid silica gel cavity, the conductivity of the cuboid silica gel cavity and the position of the cuboid silica gel cavity are variable;
The elliptic silica gel cavity is used for containing a solution with controllable conductivity and simulating elliptic hydraulic fracture cracks with different conductivities, the length of the elliptic silica gel cavity, the width of the elliptic silica gel cavity, the height of the elliptic silica gel cavity, the conductivity of the elliptic silica gel cavity and the position of the elliptic silica gel cavity are variable;
And, adopting a KGD model to simulate hydraulic fracturing cracks; at this time, adopt oval silica gel cavity simulation hydraulic fracture crack, oval silica gel cavity center leaves the column vacancy that is used for passing simulation drilling and outer positioning bearing, and oval silica gel cavity's height is hydraulic fracture purpose horizon thickness, and oval silica gel cavity's width and length are jointly calculated by hydraulic fracture crack KGD model and Kate model and are obtained:
wherein, the width of oval silica gel cavity is:
wherein w is the width of the elliptic silica gel cavity;
v is poisson ratio, and the actual parameters of the stratum are taken;
mu is the viscosity of the fracturing fluid, and taking the parameters of the actual fracturing fluid in the well;
Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
g is the shearing quantity, and taking parameters during actual fracturing under the well;
h is the height of the elliptic silica gel cavity;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
Taking parameters during actual fracturing in the well as average pressure in the seam;
p W bottom hole pressure, taking parameters during actual fracturing under the well;
the length of the elliptic silica gel cavity is as follows:
Wherein Q is fracturing detection displacement, and taking parameters during actual fracturing under the well;
h is the height of the elliptic silica gel cavity;
C is a filtering coefficient, and taking parameters during actual fracturing under the well;
w is the width of the elliptic silica gel cavity;
S P is the primary filtration loss, and taking parameters during actual fracturing under the well;
ercf (x) is the error compensation function of x.
5. A method for simulating a hydraulic fracturing formation borehole transient electromagnetic response according to claim 4 wherein said second dielectric is different from said first dielectric.
6. A method for simulating a transient electromagnetic response of a hydraulic fracturing formation borehole according to claim 4, wherein said fracture skeleton network is secured to the periphery of the simulated borehole by externally positioned bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111180589.4A CN113719281B (en) | 2021-10-11 | 2021-10-11 | Device and method for simulating transient electromagnetic response of hydraulic fracturing formation drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111180589.4A CN113719281B (en) | 2021-10-11 | 2021-10-11 | Device and method for simulating transient electromagnetic response of hydraulic fracturing formation drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113719281A CN113719281A (en) | 2021-11-30 |
| CN113719281B true CN113719281B (en) | 2024-05-24 |
Family
ID=78685818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111180589.4A Active CN113719281B (en) | 2021-10-11 | 2021-10-11 | Device and method for simulating transient electromagnetic response of hydraulic fracturing formation drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113719281B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884597A (en) * | 2014-03-01 | 2014-06-25 | 安徽理工大学 | Analogue measurement device and method for hydraulic fracturing induced surrounding rock stress change of coal bed |
| CN106032748A (en) * | 2015-03-18 | 2016-10-19 | 安徽惠洲地质安全研究院股份有限公司 | Detection method for hydrofracture crack extension rule based on borehole transient electromagnetic technology |
| WO2017100439A1 (en) * | 2015-12-10 | 2017-06-15 | Baker Hughes Incorporated | Dual-transmitter with short shields for transient mwd resistivity measurements |
| CN206531730U (en) * | 2017-02-09 | 2017-09-29 | 中国地质大学（武汉） | A kind of coal petrography hydraulic fracturing experimental rig of three axial confined pressures |
| CN107893652A (en) * | 2017-09-30 | 2018-04-10 | 中国石油大学(华东) | The hydraulic fracturing analogue experiment installation and method of the enhanced geothermal system of hot dry rock |
| CN109060470A (en) * | 2018-07-10 | 2018-12-21 | 中国石油大学(北京) | A kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture and preparation method thereof |
| CN110924933A (en) * | 2019-11-18 | 2020-03-27 | 中国石油集团川庆钻探工程有限公司 | Visual experiment method for dynamically simulating shale fracturing fracture network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2004126426A (en) * | 2002-02-01 | 2006-01-27 | Риджентс Оф Дзе Юниверсити Оф Миннесота (Us) | INTERPRETATION AND DESIGN OF OPERATIONS FOR HYDRAULIC RIGGING |
-
2021
- 2021-10-11 CN CN202111180589.4A patent/CN113719281B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884597A (en) * | 2014-03-01 | 2014-06-25 | 安徽理工大学 | Analogue measurement device and method for hydraulic fracturing induced surrounding rock stress change of coal bed |
| CN106032748A (en) * | 2015-03-18 | 2016-10-19 | 安徽惠洲地质安全研究院股份有限公司 | Detection method for hydrofracture crack extension rule based on borehole transient electromagnetic technology |
| WO2017100439A1 (en) * | 2015-12-10 | 2017-06-15 | Baker Hughes Incorporated | Dual-transmitter with short shields for transient mwd resistivity measurements |
| CN206531730U (en) * | 2017-02-09 | 2017-09-29 | 中国地质大学（武汉） | A kind of coal petrography hydraulic fracturing experimental rig of three axial confined pressures |
| CN107893652A (en) * | 2017-09-30 | 2018-04-10 | 中国石油大学(华东) | The hydraulic fracturing analogue experiment installation and method of the enhanced geothermal system of hot dry rock |
| CN109060470A (en) * | 2018-07-10 | 2018-12-21 | 中国石油大学(北京) | A kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture and preparation method thereof |
| CN110924933A (en) * | 2019-11-18 | 2020-03-27 | 中国石油集团川庆钻探工程有限公司 | Visual experiment method for dynamically simulating shale fracturing fracture network |
Non-Patent Citations (1)
| Title |
|---|
| 曲占庆.采油工程.中国石油大学出版社,2009,第192～194页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113719281A (en) | 2021-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110795878B (en) | Tunnel water inflow prediction method | |
| CN111766629B (en) | Method for identifying and describing deep carbonate karst structure | |
| CN112049616B (en) | A method for evaluating the propagation characteristics of hydraulic fracture network in shale | |
| Guiltinan et al. | Measuring well hydraulic connectivity in fractured bedrock using periodic slug tests | |
| CN105572739B (en) | Method for judging carbonatite hole crack development characteristics | |
| CN107038268B (en) | Method for determining water flooding wave sum coefficient of heterogeneous reservoir five-point well pattern | |
| CN105547967B (en) | Fissuted medium system permeability tensor indoor measurement device | |
| CN105931125B (en) | Method for predicting yield of compact oil staged multi-cluster volume fracturing horizontal well | |
| CN113779811B (en) | Quantitative analysis method for structural deformation to current ground stress orientation disturbance | |
| Shen et al. | Using water-level fluctuations in response to Earth-tide and barometric-pressure changes to measure the in-situ hydrogeological properties of an overburden aquifer in a coalfield | |
| CN104914470A (en) | Carbonate rock fracture-cavity reservoir reserve correction method | |
| CN109138975A (en) | It is a kind of that new method that mutually seeping indicatrix is solved based on time shift log data | |
| Hall | Single well tracer tests in aquifer characterization | |
| CN117633409A (en) | Methods, systems and equipment for calculating seepage parameters of shale oil and gas reservoir pressure fracture networks | |
| CN113719281B (en) | Device and method for simulating transient electromagnetic response of hydraulic fracturing formation drilling | |
| CN116776555B (en) | Shale oil multi-medium numerical simulation method for coupling multi-scale hole seams | |
| CN109030290B (en) | Test platform for salt migration in underground water under variable water head condition | |
| Wishart et al. | Hydraulic anisotropy characterization of pneumatic-fractured sediments using azimuthal self potential gradient | |
| CN114718550A (en) | Experimental device and method for evaluating well wall damage | |
| RU2676555C1 (en) | Calibration device for downhole probing device (options) | |
| Sayed et al. | Hydraulic parameters of a multilayered aquifer system in Kuwait City | |
| RU2453873C2 (en) | Apparatus for measuring filtration potential and determining underground formation characteristics | |
| EP1756622A2 (en) | Methods and apparatus for measuring streaming potentials and determining earth formation characteristics | |
| Shishkina et al. | Simulation of time-lapse resistivity logging during two-phase well testing in petroleum reservoirs | |
| Yu et al. | Study on fracture identification of shale reservoir based on electrical imaging logging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |