CN102518418A - Unlimited layer fracturing process - Google Patents
Unlimited layer fracturing process Download PDFInfo
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- CN102518418A CN102518418A CN2011104414727A CN201110441472A CN102518418A CN 102518418 A CN102518418 A CN 102518418A CN 2011104414727 A CN2011104414727 A CN 2011104414727A CN 201110441472 A CN201110441472 A CN 201110441472A CN 102518418 A CN102518418 A CN 102518418A
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- sliding sleeve
- packer
- lamination
- fracturing
- ball
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Abstract
The invention relates to the technical field of oil and gas field fracturing and provides an unlimited layer fracturing process, which comprises the following steps: manufacturing a fracturing process pipe column, connecting a guiding plug, a seal ball seat, a first-stage unlimited layer fracturing sliding sleeve, a packer, a pipe column telescopic compensator, a second-stage unlimited layer fracturing sliding sleeve, a packer, a pipe column telescopic compensator to an n-stage unlimited layer fracturing sliding sleeve, a packer with a hanger from bottom to top in sequence into a single pipe column; delivering the single pipe column to a position to be sealed; sealing all the packers at a time; then sealing the hanger; throwing a first-stage ball arm or a ball; opening the first-stage unlimited layer fracturing sliding sleeve; fracturing a first layer; throwing a second-stage ball arm or a ball; opening the second-stage unlimited layer fracturing sliding sleeve; fracturing a second layer and the like until opening the n-stage unlimited layer fracturing sliding sleeve and fracturing an n<th> layer, wherein n is a fracturing stage number. The unlimited layer fracturing process has the advantages that the pipe column has a simple structure, the fracturing construction period is short, the fracturing stage number is unlimited and the reliability is high.
Description
Technical field
The present invention relates to the oil-gas field fracturing technical field, a kind of specifically lamination of not limitting splits process.
Background technology
At present oil field multistage pressure break (acidifying, acid fracturing) generally adopts the mode staged fracturing of mechanical pitching, so each grade sliding sleeve internal diameter and pressure break ball are all inequality, from bottom to top; Bulb diameter increases step by step; The maximum internal diameter that can not surpass the epimere instrument, not only device is complicated, and operating efficiency is low; Construction risk is high, and has the limited shortcoming of the pressure break number of plies.
Summary of the invention
The object of the invention is exactly in order to overcome the weak point of above-mentioned prior art, to provide a kind of realization low permeability oil field one-trip string not limit lamination to split process, and its tubular column structure is simple, and the pressing crack construction cycle is short, does not limit the pressure break number of plies, and reliability is high.
To achieve these goals, a kind of lamination of not limitting provided by the invention splits process, comprises the steps:
(1) makes the fracturing technology tubing string; To lead plug, seat blocking seat, 1 grade do not limit lamination to split sliding sleeve, packer, tubing string telescopic compensator, 2 grades not limit lamination to split sliding sleeve, packer, tubing string telescopic compensator, n level not limit lamination to split sliding sleeve, packer, hanger to be in turn connected into one-trip string from bottom to top; Wherein, n is the pressure break number of plies;
(2) will be set by step (1) one-trip string of making deliver to the desired setting position, once set all packers, set hanger then, throw 1 grade of club or ball; Open 1 grade and do not limit lamination to split sliding sleeve, the 1st layer of pressure break thrown 2 grades of clubs or ball, opens 2 grades and do not limit lamination to split sliding sleeve; The 2nd layer of pressure break, and the like, do not limit lamination to split sliding sleeve until opening the n level; Pressure break n layer, wherein, n is the pressure break number of plies.
In technique scheme; Adopt in the said tubing string of step (1) not limit lamination to split sliding sleeve be automatically controlled pressure break sliding sleeve; Comprise outer cylinder sheath, inner sliding sleeve and signal ball, said outer cylinder sheath is socketed to form by top connection, center tap, three parts of lower contact in order, in top connection, is provided with the runner hole; Be provided with the sender unit that is used to send particular ip address in the said signal ball; Be provided with sealed chamber between said top connection and the inner sliding sleeve, hydraulic oil is housed in the chamber in advance, the sealing chamber is provided with relief hole; Said center tap is provided with and is used to control the electromagnetic valve of relief hole folding and the electric control gear of electromagnetic valve, and said top connection inboard is provided with a valve plate through torsionspring; The electric control gear of said electromagnetic valve comprises and is used to receive the antenna of IP address signal, stores data processing unit, the battery of particular ip address in advance; The signal output part of said antenna links to each other with data processing unit, and the control signal output of data processing unit links to each other with electromagnetic valve; Its working method is for when signal ball moves in sliding sleeve, and antenna detection compares with the IP address that is stored on the data processing unit to the IP address that signal ball sends, if consistent; Then connect electromagnetic valve, valve core of the electromagnetic valve moves, and opens relief hole, under the fluid pressure in tubing string; Liquid in the sealed chamber between inner sliding sleeve and the top connection is discharged from, and inner sliding sleeve is to lower slider, and when inner sliding sleeve slided, valve plate was under the effect of torsionspring; Automatically rotation is about 90 °, contacts with the upper surface of inner sliding sleeve, and pressure effect in the above forms sealing down, and the pressure break of exposing simultaneously in the top connection is used the runner hole; Can construct this moment to the stratum, after construction finishes, if the stratum is fuel-displaced or gas; Under the pressure on stratum, can make valve plate 2 Unscrews automatically, following gas or liquid can abovely move.
In technique scheme; The lamination of not limitting of every grade of employing splits its type of sliding sleeve, size, specification unanimity in the said tubing string of step (1); Only be that the IP address that stores in the electromagnetic valve electric control gear of every grade of automatically controlled pressure break sliding sleeve is inconsistent, and cooperate the various signals ball to use.
In technique scheme, every grade is adopted same packer in the said tubing string of step (1), and its packer type can be compression open hole packer, inflatable formation packer or meet oil, water inflatable formation packer.
The present invention does not limit lamination to split process; Its tubular column structure is simple, easy to use; Overcome the deficiency of present technological ball-throwing type sliding sleeve; Improved fracturing effect and operating efficiency, solved the limited problem of the pressure break number of plies, can satisfy oil gas field and in the fracturing yield increasing process, use a pipe string to accomplish specific aim pressure break different purpose layer position.
Description of drawings
Fig. 1 does not limit lamination to split the working state schematic representation of process for the present invention.
The structural representation of closed condition when Fig. 2 uses automatically controlled pressure break sliding sleeve for the embodiment of the invention.
The structural representation of open mode when Fig. 3 uses automatically controlled pressure break sliding sleeve for the embodiment of the invention.
Wherein: 1. plug leads; 2. seat blocking seat; 3. do not limit lamination to split sliding sleeve for 1 grade; 4. packer; 5. do not limit lamination to split sliding sleeve for 2 grades; 6. packer; 7. do not limit lamination to split sliding sleeve for 3 grades; 8. packer; 9. hanger; 10. 1 grade of signal ball; 11. 2 grades of signal balls; 12. 3 grades of signal balls; 13. top connection; 14. valve plate; 15. center tap; 16. lower contact; 17. inner sliding sleeve; 18. sealed chamber; 19. electromagnetic valve; 20. the electric control gear of electromagnetic valve; 21. relief hole; 22. signal ball; 23. pressure break is used the runner hole.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
As shown in Figure 1, a kind of lamination of not limitting provided by the invention splits process, is example for 3 layers with pressure break, comprises the steps:
(1) make the fracturing technology tubing string, 2,1 grade of the plug 1 that will lead, a blocking seat are not limit lamination to split sliding sleeve 3, packer 4, tubing string telescopic compensator, 2 grades and are not limit lamination to split sliding sleeve 5, packer 6, tubing string telescopic compensator, 3 grades not limit lamination to split sliding sleeve 7, packer 8, hanger 9 to be in turn connected into one-trip string from bottom to top;
(2) will be set by step (1) one-trip string of making deliver to the desired setting position, once set all packers, set hanger 9 then; Throw 1 grade of signal ball 10, open 1 grade and do not limit lamination to split sliding sleeve 3, the 1st layer of pressure break; Throw 2 grades of signal balls 11, open 2 grades and do not limit lamination to split sliding sleeve 5, the 2nd layer of pressure break; Throw 3 grades of signal balls 12, open 3 grades and do not limit lamination to split sliding sleeve 7, the 3rd layer of pressure break.
If pressure break number of plies n layer, then and the like, do not limit lamination to split sliding sleeve until opening the n level, pressure break n layer.
Like Fig. 2, shown in 3; Adopt in the said tubing string of step (1) not limit lamination to split sliding sleeve be automatically controlled pressure break sliding sleeve; Comprise outer cylinder sheath, inner sliding sleeve 17 and signal ball 22, said outer cylinder sheath is socketed to form by top connection 13, center tap 15,16 3 parts of lower contact in order, in top connection 13, is provided with runner hole 23; Be provided with the sender unit that is used to send particular ip address in the said signal ball 22; Be provided with sealed chamber 18 between said top connection 13 and the inner sliding sleeve 17, hydraulic oil is housed in the chamber in advance, sealing chamber 18 is provided with relief hole 21; Said center tap 15 is provided with and is used to control the electromagnetic valve 19 of relief hole 21 foldings and the electric control gear 20 of electromagnetic valve, and said top connection 13 inboards are provided with a valve plate 14 through torsionspring; The electric control gear 20 of said electromagnetic valve comprises and is used to receive the antenna of IP address signal, stores data processing unit, the battery of particular ip address in advance; The signal output part of said antenna links to each other with data processing unit, and the control signal output of data processing unit links to each other with electromagnetic valve 19; Its working method is for when signal ball 22 moves in sliding sleeve, and antenna detection compares with the IP address that is stored on the data processing unit to the IP address that signal ball sends, if consistent; Then connect electromagnetic valve, electromagnetic valve 19 spools move, and open relief hole 21, under the fluid pressure in tubing string; Liquid in the sealed chamber 18 between inner sliding sleeve and the top connection is discharged from, and inner sliding sleeve 17 is to lower slider, and when inner sliding sleeve 17 slided, valve plate 14 was under the effect of torsionspring; Automatically rotation is about 90 °, contact with the upper surface of inner sliding sleeve 17, and pressure effect in the above forms down and seals, and exposes pressure break in the top connection simultaneously with runner hole 23; Can construct this moment to the stratum, after construction finishes, if the stratum is fuel-displaced or gas; Under the pressure on stratum, can make valve plate 14 Unscrews automatically, following gas or liquid can abovely move.Wherein, Fig. 2 shows the state of going into the well of automatically controlled sliding sleeve, and sliding sleeve is in closed condition, is not communicated with inside and outside the sliding sleeve.Fig. 3 shows the duty of automatically controlled sliding sleeve, and sliding sleeve is in open mode, inside and outside connection.
In technique scheme; The lamination of not limitting of every grade of employing splits its type of sliding sleeve, size, specification unanimity in the said tubing string of step (1); Only be that the IP address that stores in the electromagnetic valve electric control gear of every grade of automatically controlled pressure break sliding sleeve is inconsistent, and cooperate the various signals ball to use.
In technique scheme, every grade is adopted same packer in the said tubing string of step (1), and its packer type can be compression open hole packer, inflatable formation packer or meet oil, water inflatable formation packer.
Claims (4)
1. do not limit lamination to split process for one kind, it is characterized in that this method comprises the steps:
(1) makes the fracturing technology tubing string; To lead plug, seat blocking seat, 1 grade do not limit lamination to split sliding sleeve, packer, tubing string telescopic compensator, 2 grades not limit lamination to split sliding sleeve, packer, tubing string telescopic compensator, n level not limit lamination to split sliding sleeve, packer, hanger to be in turn connected into one-trip string from bottom to top; Wherein, n is the pressure break number of plies;
(2) will be set by step (1) one-trip string of making deliver to the desired setting position, once set all packers, set hanger then, throw 1 grade of club or ball; Open 1 grade and do not limit lamination to split sliding sleeve, the 1st layer of pressure break thrown 2 grades of clubs or ball, opens 2 grades and do not limit lamination to split sliding sleeve; The 2nd layer of pressure break, and the like, do not limit lamination to split sliding sleeve until opening the n level; Pressure break n layer, wherein, n is the pressure break number of plies.
2. a kind of lamination of not limitting according to claim 1 splits process; It is characterized in that: adopt in the said tubing string of step (1) not limit lamination to split sliding sleeve be automatically controlled pressure break sliding sleeve; Comprise outer cylinder sheath, inner sliding sleeve and signal ball, said outer cylinder sheath is socketed to form by top connection, center tap, three parts of lower contact in order, in top connection, is provided with the runner hole; Be provided with the sender unit that is used to send particular ip address in the said signal ball; Be provided with sealed chamber between said top connection and the inner sliding sleeve, hydraulic oil is housed in the chamber in advance, the sealing chamber is provided with relief hole; Said center tap is provided with and is used to control the electromagnetic valve of relief hole folding and the electric control gear of electromagnetic valve, and said top connection inboard is provided with a valve plate through torsionspring; The electric control gear of said electromagnetic valve comprises and is used to receive the antenna of IP address signal, stores data processing unit, the battery of particular ip address in advance; The signal output part of said antenna links to each other with data processing unit, and the control signal output of data processing unit links to each other with electromagnetic valve; Its working method is for when signal ball moves in sliding sleeve, and antenna detection compares with the IP address that is stored on the data processing unit to the IP address that signal ball sends, if consistent; Then connect electromagnetic valve, valve core of the electromagnetic valve moves, and opens relief hole, under the fluid pressure in tubing string; Liquid in the sealed chamber between inner sliding sleeve and the top connection is discharged from, and inner sliding sleeve is to lower slider, and when inner sliding sleeve slided, valve plate was under the effect of torsionspring; Automatically rotation is about 90 °, contacts with the upper surface of inner sliding sleeve, and pressure effect in the above forms sealing down, and the pressure break of exposing simultaneously in the top connection is used the runner hole; Can construct this moment to the stratum, after construction finishes, if the stratum is fuel-displaced or gas; Under the pressure on stratum, can make valve plate 2 Unscrews automatically, following gas or liquid can abovely move.
3. a kind of lamination of not limitting according to claim 2 splits process; It is characterized in that: the lamination of not limitting of every grade of employing splits its type of sliding sleeve, size, specification unanimity in the said tubing string of step (1); Only be that the IP address that stores in the electromagnetic valve electric control gear of every grade of automatically controlled pressure break sliding sleeve is inconsistent, and cooperate the various signals ball to use.
4. a kind of lamination of not limitting according to claim 1 splits process; It is characterized in that: every grade is adopted same packer in the said tubing string of step (1), and its packer type can be compression open hole packer, inflatable formation packer or meet oil, water inflatable formation packer.
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| CN201110441472.7A CN102518418B (en) | 2011-12-26 | 2011-12-26 | Unlimited layer fracturing process |
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| CN201110441472.7A CN102518418B (en) | 2011-12-26 | 2011-12-26 | Unlimited layer fracturing process |
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| CN103046899A (en) * | 2013-01-22 | 2013-04-17 | 中国石油天然气股份有限公司 | Electronic tag ball for underground control |
| CN103277079A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | String and fracturing construction method for horizontal well fracturing completion |
| CN103437747A (en) * | 2013-09-04 | 2013-12-11 | 中国石油集团川庆钻探工程有限公司 | Horizontal well stage-unlimited sectional reconstruction method |
| WO2014004144A3 (en) * | 2012-06-29 | 2014-02-20 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| US8893811B2 (en) | 2011-06-08 | 2014-11-25 | Halliburton Energy Services, Inc. | Responsively activated wellbore stimulation assemblies and methods of using the same |
| US8899334B2 (en) | 2011-08-23 | 2014-12-02 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| US8991509B2 (en) | 2012-04-30 | 2015-03-31 | Halliburton Energy Services, Inc. | Delayed activation activatable stimulation assembly |
| CN104481487A (en) * | 2014-11-12 | 2015-04-01 | 中国石油化工股份有限公司 | Multi-stage, multi-gap and multi-section fracturing method for horizontal well |
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| CN105386749A (en) * | 2015-06-17 | 2016-03-09 | 周再乐 | Novel fracturing tool |
| US9428976B2 (en) | 2011-02-10 | 2016-08-30 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
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| US9428976B2 (en) | 2011-02-10 | 2016-08-30 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| US9458697B2 (en) | 2011-02-10 | 2016-10-04 | Halliburton Energy Services, Inc. | Method for individually servicing a plurality of zones of a subterranean formation |
| US8893811B2 (en) | 2011-06-08 | 2014-11-25 | Halliburton Energy Services, Inc. | Responsively activated wellbore stimulation assemblies and methods of using the same |
| US8899334B2 (en) | 2011-08-23 | 2014-12-02 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| US8991509B2 (en) | 2012-04-30 | 2015-03-31 | Halliburton Energy Services, Inc. | Delayed activation activatable stimulation assembly |
| US9784070B2 (en) | 2012-06-29 | 2017-10-10 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| WO2014004144A3 (en) * | 2012-06-29 | 2014-02-20 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| CN105026684B (en) * | 2012-10-04 | 2018-05-04 | 尼克森能源无限责任公司 | The improvement hydraulic fracturing method of inclined shaft cylinder |
| CN105026684A (en) * | 2012-10-04 | 2015-11-04 | 尼克森能源无限责任公司 | Improved hydraulic fracturing process for deviated wellbores |
| CN103046899B (en) * | 2013-01-22 | 2016-05-11 | 中国石油天然气股份有限公司 | A kind of down-hole is controlled and is used electronic tag ball |
| CN103046899A (en) * | 2013-01-22 | 2013-04-17 | 中国石油天然气股份有限公司 | Electronic tag ball for underground control |
| CN103277079B (en) * | 2013-06-04 | 2015-12-09 | 中国海洋石油总公司 | A kind of tubing string of horizontal well fracturing completion and pressing crack construction method thereof |
| CN103277079A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | String and fracturing construction method for horizontal well fracturing completion |
| CN103437747A (en) * | 2013-09-04 | 2013-12-11 | 中国石油集团川庆钻探工程有限公司 | Horizontal well stage-unlimited sectional reconstruction method |
| CN103437747B (en) * | 2013-09-04 | 2016-01-20 | 中国石油集团川庆钻探工程有限公司 | A kind of horizontal well infinite stages segmentation remodeling method |
| CN107429556A (en) * | 2014-10-02 | 2017-12-01 | Sc资产有限公司 | For will expose in succession to allow the system along the pit shaft injecting fluid along the port of pit shaft |
| CN104481487A (en) * | 2014-11-12 | 2015-04-01 | 中国石油化工股份有限公司 | Multi-stage, multi-gap and multi-section fracturing method for horizontal well |
| CN104481487B (en) * | 2014-11-12 | 2017-10-13 | 中国石油化工股份有限公司 | The multistage many seam staged fracturing methods of horizontal well |
| CN105386749A (en) * | 2015-06-17 | 2016-03-09 | 周再乐 | Novel fracturing tool |
| CN105386749B (en) * | 2015-06-17 | 2018-09-07 | 周再乐 | A kind of novel fracturing tool |
| CN107366520A (en) * | 2016-05-12 | 2017-11-21 | 中石化石油工程技术服务有限公司 | A kind of robot switching sliding sleeve |
| CN106050188A (en) * | 2016-06-01 | 2016-10-26 | 中国海洋石油总公司 | Intelligent sliding sleeve for multi-stage fracturing of horizontal well |
| CN106050188B (en) * | 2016-06-01 | 2018-09-11 | 中国海洋石油集团有限公司 | A kind of horizontal well multistage fracturing intelligence sliding sleeve |
| WO2021142877A1 (en) * | 2020-01-16 | 2021-07-22 | 成都维锐泰达能源技术有限公司 | Smart delivery device |
| CN111764868A (en) * | 2020-07-14 | 2020-10-13 | 中国石油集团渤海钻探工程有限公司 | Downhole seat block extension device |
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