CN104695923A - Method for realizing staged multi-cluster fracturing of horizontal well by adopting soluble balls - Google Patents
Method for realizing staged multi-cluster fracturing of horizontal well by adopting soluble balls Download PDFInfo
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- CN104695923A CN104695923A CN201310651652.7A CN201310651652A CN104695923A CN 104695923 A CN104695923 A CN 104695923A CN 201310651652 A CN201310651652 A CN 201310651652A CN 104695923 A CN104695923 A CN 104695923A
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- Prior art keywords
- well
- fracturing
- horizontal well
- construction
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 18
- 230000000977 initiatory effect Effects 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 11
- 230000011218 segmentation Effects 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009466 transformation Effects 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
- 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
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- 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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a method for realizing horizontal well subsection multi-cluster fracturing by adopting soluble balls, which is designed for solving the problem that the opening probability of each cluster of each section of the existing horizontal well is too low, namely, a plurality of clusters of perforation are adopted in each section of the horizontal well; performing fracturing construction, adding a certain amount of soluble balls in the construction process to block the clusters which are already fractured, and forcing fracturing liquid to flow to clusters which are not fractured so as to cause multiple clusters to be fractured; after fracturing construction is completed, the soluble balls are dissolved automatically; and repeating the steps until the fracturing operation of all intervals of the operation well is completed. The method can solve the problem that the opening rate of each cluster of each section of the existing horizontal well is too low, and the broken clusters are temporarily blocked by the soluble balls, so that the probability of simultaneous breaking of a plurality of clusters can be increased, and the perforation cannot be blocked, so that the yield of an oil well is influenced.
Description
Technical field
The present invention relates to a kind of method adopting solvable ball to realize horizontal well in segments many bunches of pressure breaks, belong to technical field of oil production engineering.
Background technology
In recent years, " horizontal well+segmentation many bunches volume fracturing " method has become the effective means that exploitation unconventionaloil pool is hidden, and the method carries out segmentation many showers hole, many bunches of concurrent fracturings, and unconventional single hop perforation, single hop pressure break mode to sleeve pipe.At present, external main employing waterpower bridging plug segmentation many bunches of fracturing technologies, namely speed bored bridging plug and perforating gun by waterpower pumping or coiled tubing to join and make drilling tool down to precalculated position, setting and after discharging bridging plug, depart from perforating gun, on carry perforating gun to perforating site, carry out many showers hole by design, adopt low viscosity clear water or mixing water to carry out huge discharge, large liquid measure pressing crack construction, realize many bunches of unlatchings, form crack, under enter new speed and bore bridging plug and perforating gun and join and make drilling tool; Repeat above-mentioned steps, complete multiple interval operation successively from bottom to top, finally adopt continuous tubing drill bridging plug, go into operation.Domestic main employing hydraulic sand blasting segmentation many bunches of fracturing technologies, namely by lower horizontal well jetting segmentation many bunches of fracturing strings to design attitude; Carry out perforation and huge discharge, the large liquid measure fracturing work of first paragraph many bunches; Repeat above step, until the transformation of this well all intervals is complete.
Mainly there is following problem in said method: due to the impact by reservoir heterogeneity, uses original " many showers hole concurrent fracturing " method, and the probability that each bunch of horizontal well every section is opened only has 30-40%.
Summary of the invention
The object of the present invention is to provide a kind of method adopting solvable ball to realize horizontal well in segments many bunches of pressure breaks, open all too low problem of probability to solve each bunch of every section, existing level well.
Concrete technology contents of the present invention is as follows:
Horizontal well every section adopts many showers hole; Carry out pressing crack construction, and add the solubility ball of some in construction midway, block crack initiation bunch, force fracturing fluid flow to not yet crack initiation bunch, cause many bunches of crack initiations; After pressing crack construction completes, solubility ball dissolves voluntarily; Repeat above-mentioned steps, until complete the whole interval fracturing work of described well in operation.
The inventive method can solve all too low problem of every section, existing level well each bunch of unlatching rate, by the stifled crack initiation temporarily of solubility ball bunch, the probability of many bunches of crack initiations simultaneously can be increased, and can not eyelet be blocked, affect oil well output.
Accompanying drawing explanation
Fig. 1 is that conventional levels well part bunch opens schematic diagram.
Fig. 2 opens schematic diagram for adopting solubility ball to realize horizontal well many bunches.
Fig. 3 is the horizontal well many bunches of schematic diagrames after solubility ball dissolves voluntarily.
Detailed description of the invention
Embodiment:
Further illustrate below in conjunction with Fig. 1 to 3 pair of embodiments of the invention:
The concrete operation step of the inventive method is as follows:
1) drift size gauge tool drifting is used; Drifting is to the artificial bottom of a well of well in operation, and guarantee that pit shaft is clean, whether the internal diameter of Inspection well meets standard, if well in operation has distortion or blocking, then examines the biggest size of element that well in operation can pass through, if do not meet pressure break requirement, then and well workover, then implement pressure break;
2) adopt firepower many showers hole or hydraulic sand blasting many bunches to horizontal well first paragraph perforation;
3) waterpower bridging plug segmentation many bunches of fracturing technologies or hydraulic sand blasting segmentation many bunches of fracturing technologies are adopted to carry out pressing crack construction;
4) in pressing crack construction, when part bunch fracture initiation, extend after, according to horizontal well split waveguide result, in fracturing fluid, add solubility ball, block crack initiation bunch, with force fracturing fluid flow to not yet crack initiation bunch;
5) solubility ball dissolves voluntarily after pressing crack construction is complete;
6) above-mentioned steps construction is repeated, the whole interval of fracturing work well;
7) open flow, ask product and completion.
Claims (2)
1. adopt solvable ball to realize a method for horizontal well in segments many bunches of pressure breaks, it is characterized in that this method main contents are as follows:
Horizontal well every section adopts many showers hole; Carry out pressing crack construction, and add the solubility ball of some in construction midway, block crack initiation bunch, force fracturing fluid flow to not yet crack initiation bunch, cause many bunches of crack initiations; After pressing crack construction completes, solubility ball dissolves voluntarily; Repeat above-mentioned steps, until complete the whole interval fracturing work of described well in operation.
2. the solvable ball of employing according to claim 1 realizes the method for horizontal well in segments many bunches of pressure breaks, it is characterized in that its concrete operation step is as follows:
1) drift size gauge tool drifting is used; Drifting is to the artificial bottom of a well of well in operation, and guarantee that pit shaft is clean, whether the internal diameter of Inspection well meets standard, if well in operation has distortion or blocking, then examines the biggest size of element that well in operation can pass through, if do not meet pressure break requirement, then and well workover, then implement pressure break;
2) adopt firepower many showers hole or hydraulic sand blasting many bunches to horizontal well first paragraph perforation;
3) waterpower bridging plug segmentation many bunches of fracturing technologies or hydraulic sand blasting segmentation many bunches of fracturing technologies are adopted to carry out pressing crack construction;
4) in pressing crack construction, when part bunch fracture initiation, extend after, according to horizontal well split waveguide result, in fracturing fluid, add solubility ball, block crack initiation bunch, with force fracturing fluid flow to not yet crack initiation bunch;
5) solubility ball dissolves voluntarily after pressing crack construction is complete;
6) above-mentioned steps construction is repeated, the whole interval of fracturing work well;
7) open flow, ask product and completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651652.7A CN104695923A (en) | 2013-12-05 | 2013-12-05 | Method for realizing staged multi-cluster fracturing of horizontal well by adopting soluble balls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651652.7A CN104695923A (en) | 2013-12-05 | 2013-12-05 | Method for realizing staged multi-cluster fracturing of horizontal well by adopting soluble balls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104695923A true CN104695923A (en) | 2015-06-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310651652.7A Pending CN104695923A (en) | 2013-12-05 | 2013-12-05 | Method for realizing staged multi-cluster fracturing of horizontal well by adopting soluble balls |
Country Status (1)
| Country | Link |
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| CN (1) | CN104695923A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989358A (en) * | 2015-06-18 | 2015-10-21 | 中国石油化工股份有限公司华东分公司采油厂 | Shale gas horizontal well bridge plug separation and ball throwing segmented fracturing process |
| CN105484719A (en) * | 2015-12-29 | 2016-04-13 | 中国石油天然气股份有限公司 | Method for improving multi-cluster cracking effectiveness by adopting multi-scale soluble ball to seal seam |
| CN107120101A (en) * | 2016-02-24 | 2017-09-01 | 中国石油化工股份有限公司 | A kind of fracturing process of middle high-order coal bed gas well |
| CN107191157A (en) * | 2017-07-06 | 2017-09-22 | 中国石油集团渤海钻探工程有限公司 | A kind of solvable packing completion method of full-bore |
| CN107420081A (en) * | 2017-09-08 | 2017-12-01 | 中国石油天然气股份有限公司 | Fracturing method for realizing effective partial pressure of compact heterogeneous reservoir |
| CN107605449A (en) * | 2017-08-03 | 2018-01-19 | 中国石油天然气股份有限公司 | Ball-throwing temporary plugging layered fracturing method for heterogeneous reservoir |
| CN109812247A (en) * | 2019-02-21 | 2019-05-28 | 中国石油天然气股份有限公司 | Perforation and fracturing method for improving transformation degree of compact oil horizontal well |
| CN110242269A (en) * | 2019-06-21 | 2019-09-17 | 北京捷贝通石油技术股份有限公司 | A kind of overstocked cracking method of casing deformation well chemical packer segmented body |
| CN111648755A (en) * | 2020-05-20 | 2020-09-11 | 中国石油化工股份有限公司 | Method for promoting balanced expansion of multiple clusters of cracks through ball throwing and temporary plugging |
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| CN101146888A (en) * | 2005-01-21 | 2008-03-19 | 费尔蒙特矿物有限公司 | Soluble deverting agents |
| US7380600B2 (en) * | 2004-09-01 | 2008-06-03 | Schlumberger Technology Corporation | Degradable material assisted diversion or isolation |
| CN101553552A (en) * | 2006-10-24 | 2009-10-07 | 普拉德研究及开发股份有限公司 | Degradable material assisted steering |
| CN202900060U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Coiled tubing perforation, casing fracturing and bridge plug packing process pipe string |
-
2013
- 2013-12-05 CN CN201310651652.7A patent/CN104695923A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| US7380600B2 (en) * | 2004-09-01 | 2008-06-03 | Schlumberger Technology Corporation | Degradable material assisted diversion or isolation |
| CN101146888A (en) * | 2005-01-21 | 2008-03-19 | 费尔蒙特矿物有限公司 | Soluble deverting agents |
| CN103352683A (en) * | 2005-12-05 | 2013-10-16 | 普拉德研究及开发股份有限公司 | Method of formation protection while performing downhole operation |
| CN101553552A (en) * | 2006-10-24 | 2009-10-07 | 普拉德研究及开发股份有限公司 | Degradable material assisted steering |
| CN202900060U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Coiled tubing perforation, casing fracturing and bridge plug packing process pipe string |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989358A (en) * | 2015-06-18 | 2015-10-21 | 中国石油化工股份有限公司华东分公司采油厂 | Shale gas horizontal well bridge plug separation and ball throwing segmented fracturing process |
| CN105484719A (en) * | 2015-12-29 | 2016-04-13 | 中国石油天然气股份有限公司 | Method for improving multi-cluster cracking effectiveness by adopting multi-scale soluble ball to seal seam |
| CN107120101A (en) * | 2016-02-24 | 2017-09-01 | 中国石油化工股份有限公司 | A kind of fracturing process of middle high-order coal bed gas well |
| CN107191157A (en) * | 2017-07-06 | 2017-09-22 | 中国石油集团渤海钻探工程有限公司 | A kind of solvable packing completion method of full-bore |
| CN107605449A (en) * | 2017-08-03 | 2018-01-19 | 中国石油天然气股份有限公司 | Ball-throwing temporary plugging layered fracturing method for heterogeneous reservoir |
| CN107420081A (en) * | 2017-09-08 | 2017-12-01 | 中国石油天然气股份有限公司 | Fracturing method for realizing effective partial pressure of compact heterogeneous reservoir |
| CN107420081B (en) * | 2017-09-08 | 2020-07-14 | 中国石油天然气股份有限公司 | Fracturing method for realizing effective partial pressure of compact heterogeneous reservoir |
| CN109812247A (en) * | 2019-02-21 | 2019-05-28 | 中国石油天然气股份有限公司 | Perforation and fracturing method for improving transformation degree of compact oil horizontal well |
| CN109812247B (en) * | 2019-02-21 | 2021-07-02 | 中国石油天然气股份有限公司 | Perforation and fracturing method for improving transformation degree of compact oil horizontal well |
| CN110242269A (en) * | 2019-06-21 | 2019-09-17 | 北京捷贝通石油技术股份有限公司 | A kind of overstocked cracking method of casing deformation well chemical packer segmented body |
| CN111648755A (en) * | 2020-05-20 | 2020-09-11 | 中国石油化工股份有限公司 | Method for promoting balanced expansion of multiple clusters of cracks through ball throwing and temporary plugging |
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Application publication date: 20150610 |