CN205189821U - Many bunches of unlimited level well cementation segmentation fracturing string - Google Patents
Many bunches of unlimited level well cementation segmentation fracturing string Download PDFInfo
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- CN205189821U CN205189821U CN201520849220.1U CN201520849220U CN205189821U CN 205189821 U CN205189821 U CN 205189821U CN 201520849220 U CN201520849220 U CN 201520849220U CN 205189821 U CN205189821 U CN 205189821U
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Abstract
The utility model provides a many bunches of unlimited level well cementation segmentation fracturing string, forms float shoe, float collar, pressure differential sliding sleeve, multistage fracturing unit from bottom to top through bushing, and wherein every grade of fracturing unit is interior including many bunches of fracturing sliding sleeves of multiunit. The utility model discloses a put in a special use and open the instrument in every grade of fracturing unit, can open many bunches of fracturing sliding sleeves of multiunit one by one in every grade of fracturing unit. The utility model discloses a fracturing progression is unrestricted, can realize arbitrary level fracturing, can form many main cracks through opening many bunches of fracturing sliding sleeve fracturings of multiunit in every grade of fracturing unit, has realized unlimited level fracturing and many bunches of fracturings simultaneously, can form complicated fracture network, effectively enlarges oil reservoir earial drainage volume, improves the fracturing correctional effect greatly, is the key technology that effective development was hidden to hyposmosis oil gas.
Description
Technical field
The utility model relates to a kind of well-cementing staged-fracturing tubing string, particularly a kind of many bunches of infinite stages well-cementing staged-fracturing tubing strings.
Background technology
Horizontal cementing staged fracturing technology is one of main completion technique of Low permeable oil and gas reservoirs, at present this technology is applied to and on-the-spot mainly comprises two kinds of technologies, one is that staged fracturing technology made by pumping bridging plug perforation connection, and another kind is that coiled tubing drags packer staged fracturing technology.Staged fracturing technology long construction period made by pumping bridging plug perforation connection, and the later stage also needs bridging plug to bore to remove, and construction is complicated; It is large that coiled tubing drags packer staged fracturing technology construction risk, there is card tubing string hidden danger.In addition, although these two kinds of technology pressure break progression are unrestricted, can realize infinite stages pressure break, but many bunches of pressure breaks can not be realized, a major fracture can only be formed in every one-level fractured interval, greatly limit the effect of reservoir reconstruction.
Utility model content
The purpose of this utility model is to provide a kind of many bunches of infinite stages well-cementing staged-fracturing tubing strings, and can realize infinite stages pressure break and many bunches of pressure breaks, pressure break progression is unrestricted simultaneously, can form many cracks in every one-level pressure break unit,
The utility model solves the technical scheme that its technical problem adopts:
A kind of many bunches of infinite stages well-cementing staged-fracturing tubing strings, float shoe, float collar, pressure reduction sliding sleeve and multistage fracturing unit are connected to form by sleeve pipe from bottom to top, one group many bunches fracturing sliding bush A types and many groups many bunches of fracturing sliding bush Type Bs are comprised in every grade of pressure break unit, the many bunches of outside pressure transmission pipelines of fracturing sliding bush connect successively, and many bunches of fracturing sliding bush inside are opened instrument respectively by input and opened one by one.
Wherein: many bunches of fracturing sliding bush A types are made up of top connection, urceolus, inner sleeve, piston, the seat that builds the pressure, cradle and lower contact, wherein on urceolus, axially punching stroke forms feed pathway and pressure transmission passage, urceolus is provided with radial pressure break passage, urceolus is connected by shear pin with inner sleeve, inside put and be provided with radial inlet opening, cradle and inner sleeve are threaded connection; Many bunches of fracturing sliding bush Type Bs are made up of top connection, urceolus, inner sleeve, piston, the seat that builds the pressure, cradle and lower contact, wherein on urceolus, punching forms continuous print pressure transmission passage, urceolus is provided with radial pressure break passage, urceolus is connected by shear pin with inner sleeve, inside put and be provided with radial inlet opening, cradle and inner sleeve are threaded connection.
Pressure reduction sliding sleeve is made up of top connection, lower contact and sliding sleeve, and wherein top connection is provided with axial pressure transmission passage and radial pressure break passage, and sliding sleeve is fixed in top connection by shear pin, and top connection and lower contact are threaded connection.
Instrument of opening is made up of glue umbrella, decylization, central block, wherein decylization is fixed on central block by shear pin, the quantity often only opening decylization needed for instrument is identical with the number of the Type B many bunches of fracturing sliding bushs comprised in every grade of pressure break unit, need be identical with the progression of pressure break unit by the quantity opening instrument.
The utility model has following beneficial effect: (1) can realize infinite stages pressure break, and pressure break progression does not limit by pressure break tool sizes; (2) many bunches of pressure breaks can be realized, can many cracks be formed in every one-level pressure break unit, improve fracturing reform effect; (3) enter interior tubing string under not needing, construction technology is simple, and construction risk is little, short construction period.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of many bunches of infinite stages well-cementing staged-fracturing tubing strings of the utility model.
Fig. 2 is the structural representation of many bunches of fracturing sliding bush A types in the utility model.
Fig. 3 is the structural representation of many bunches of fracturing sliding bush Type Bs in the utility model.
Fig. 4 is the structural representation of pressure reduction sliding sleeve in the utility model.
Fig. 5 is the structural representation opening instrument in the utility model.
In figure: 1, sleeve pipe, 2, many bunches of fracturing sliding bush A types of 3rd level pressure break unit, 3, more than first bunch of fracturing sliding bush Type B of 3rd level pressure break unit, 4, more than second bunch of fracturing sliding bush Type B of 3rd level pressure break unit, 5, many bunches of fracturing sliding bush A types of the 2nd grade of pressure break unit, 6, more than first bunch of fracturing sliding bush Type B of the 2nd grade of pressure break unit, 7, more than second bunch of fracturing sliding bush Type B of the 2nd grade of pressure break unit, 8, many bunches of fracturing sliding bush A types of the 1st grade of pressure break unit, 9, more than first bunch of fracturing sliding bush Type B of the 1st grade of pressure break unit, 10, more than second bunch of fracturing sliding bush Type B of the 1st grade of pressure break unit, 11, pressure reduction sliding sleeve, 12, float collar, 13, float shoe, 14, pressure transmission pipeline, 2-1, the top connection of many bunches of fracturing sliding bush A types, 2-2, the urceolus of many bunches of fracturing sliding bush A types, 2-3, the inner sleeve of many bunches of fracturing sliding bush A types, 2-4, the feed pathway of many bunches of fracturing sliding bush A types, 2-5, the pressure break passage of many bunches of fracturing sliding bush A types, 2-6, the shear pin of many bunches of fracturing sliding bush A types, 2-7, the inlet opening of many bunches of fracturing sliding bush A types, 2-8, the piston of many bunches of fracturing sliding bush A types, 2-9, the seat that builds the pressure of many bunches of fracturing sliding bush A types, 2-10, the cradle of many bunches of fracturing sliding bush A types, 2-11, the pressure transmission passage of many bunches of fracturing sliding bush A types, 2-12, the lower contact of many bunches of fracturing sliding bush A types, 3-1, the top connection of many bunches of fracturing sliding bush Type Bs, 3-2, the urceolus of many bunches of fracturing sliding bush Type Bs, 3-3, the inner sleeve of many bunches of fracturing sliding bush Type Bs, 3-4, the pressure break passage of many bunches of fracturing sliding bush Type Bs, 3-5, the shear pin of many bunches of fracturing sliding bush Type Bs, 3-6, the inlet opening of many bunches of fracturing sliding bush Type Bs, 3-7, the piston of many bunches of fracturing sliding bush Type Bs, 3-8, the seat that builds the pressure of many bunches of fracturing sliding bush Type Bs, 3-9, the cradle of many bunches of fracturing sliding bush Type Bs, 3-10, the pressure transmission passage of many bunches of fracturing sliding bush Type Bs, 3-11, the lower contact of many bunches of fracturing sliding bush Type Bs, 4-1, the top connection of pressure reduction sliding sleeve, 4-2, the pressure transmission passage of pressure reduction sliding sleeve, 4-3, the sliding sleeve of pressure reduction sliding sleeve, 4-4, the shear pin of pressure reduction sliding sleeve, 4-5, the pressure break passage of pressure reduction sliding sleeve, 4-6, the lower contact of pressure reduction sliding sleeve, 5-1, open the glue umbrella of instrument, 5-2, open the decylization of instrument, 5-3, open the shear pin of instrument, 5-4, the special decylization opening instrument, 5-5, open the shear pin of instrument, 5-6, open the central block of instrument.
Detailed description of the invention
A kind of many bunches of infinite stages well-cementing staged-fracturing tubing strings, this fracturing string is by float shoe 13, float collar 12, pressure reduction sliding sleeve 11, multistage fracturing unit is connected to form by sleeve pipe 1 from bottom to top, the quantity of multistage fracturing unit is unrestricted, and wherein comprise one group many bunches fracturing sliding bush A types and many groups many bunches of fracturing sliding bush Type Bs in every grade of pressure break unit, many bunches of fracturing sliding bushs are opened instrument by input and opened one by one.
Fracturing string outer wall is provided with pressure transmission pipeline 14.
Below in conjunction with Figure of description, the utility model is further described:
Many bunches of infinite stages well-cementing staged-fracturing tubing strings described in the present embodiment can realize many bunches of 3 grades of staged fracturings, as shown in Figure 1, by float shoe 13, float collar 12, pressure reduction sliding sleeve 11,3 grades of pressure break unit are connected to form by sleeve pipe 1 from bottom to top, one group many bunches fracturing sliding bush A types 8 and 2 groups many bunches fracturing sliding bush Type Bs 9,10 are comprised in 1st grade of pressure break unit, comprise one group many bunches fracturing sliding bush A types 5 and 2 groups many bunches fracturing sliding bush Type Bs 6,7 in 2nd grade of pressure break unit, in 3rd level pressure break unit, comprise one group many bunches fracturing sliding bush A types 2 and 2 groups many bunches fracturing sliding bush Type Bs 3,4.
Fracturing string outer wall is provided with pressure transmission pipeline 14, and the pressure transmission passage 4-2 of pressure reduction sliding sleeve 11 is connected by pressure transmission pipeline 14 with the pressure transmission passage 3-10 of more than second bunch of fracturing sliding bush Type B 10 of the 1st grade of pressure break unit; In every grade of pressure break unit, the pressure transmission passage 2-11 of many bunches of fracturing sliding bush A types is connected with the pressure transmission passage 3-10 of more than first bunch of fracturing sliding bush Type B by pressure transmission pipeline 14, and the pressure transmission passage 3-10 of more than first bunch of fracturing sliding bush Type B is connected with the pressure transmission passage 3-10 of more than second bunch of fracturing sliding bush Type B by pressure transmission pipeline 14; The feed pathway 2-4 of many bunches of fracturing sliding bush A types 8 of the 1st grade of pressure break unit is connected with the pressure transmission passage 3-10 of more than second bunch of fracturing sliding bush Type B 7 of the 2nd grade of pressure break unit by pressure transmission pipeline 14, and the feed pathway 2-4 of many bunches of fracturing sliding bush A types 5 of the 2nd grade of pressure break unit is connected with the pressure transmission passage 3-10 of more than second bunch of fracturing sliding bush Type B 4 of 3rd level pressure break unit by pressure transmission pipeline 14.
Many bunches of fracturing sliding bush A types 2,5,8 are made up of top connection 2-1, urceolus 2-2, inner sleeve 2-3, piston 2-8, a 2-9 that builds the pressure, cradle 2-10 and lower contact 2-12, wherein feed pathway 2-4 and pressure transmission passage 2-11 punches formation on urceolus 2-2, urceolus 2-2 is provided with pressure break passage 2-5, urceolus 2-2 is connected by shear pin 2-6 with inner sleeve 2-3, inner sleeve 2-3 is provided with inlet opening 2-7, and cradle 2-10 and inner sleeve 2-3 is threaded connection.
Many bunches of fracturing sliding bush Type Bs 3,4,6,7,9,10 are made up of top connection 3-1, urceolus 3-2, inner sleeve 3-3, piston 3-7, a 3-8 that builds the pressure, cradle 3-9 and lower contact 3-11, wherein pressure transmission passage 3-10 punches formation on urceolus 3-2, urceolus 3-2 is provided with pressure break passage 3-4, urceolus 3-2 is connected by shear pin 3-5 with inner sleeve 3-3, inner sleeve 3-3 is provided with inlet opening 3-6, and cradle 3-9 and inner sleeve 3-3 is threaded connection.
Pressure reduction sliding sleeve 11 is made up of top connection 4-1, lower contact 4-6 and sliding sleeve 4-3, and wherein top connection is provided with pressure transmission passage 4-2 and pressure break passage 4-5, sliding sleeve 4-3 are fixed on top connection 4-1 by shear pin 4-4, and top connection 4-1 and lower contact 4-6 is threaded connection.
Instrument of opening is made up of glue umbrella 5-1, decylization 5-2 and 5-4, central block 5-6, and wherein decylization 5-2 is fixed on central block 5-6 by shear pin 5-3, and decylization 5-4 is fixed on central block 5-6 by shear pin 5-5.The quantity often only opening decylization needed for instrument is identical with the number of the many bunches of fracturing sliding bush Type Bs comprised in every grade of pressure break unit, need be identical with the progression of pressure break unit by the quantity opening instrument.
Use the fracturing string described in the present embodiment to carry out fracturing work, specifically comprise the following steps:
A the operation of () casing cementing completes after, suppress at well head, when pressure reaches setting value, shear pin 4-4 in pressure reduction sliding sleeve 11 cuts off, sliding sleeve 4-3 is descending, expose pressure transmission passage 4-2 and pressure break passage 4-5, pressure is by pressure transmission passage 4-2, pressure transmission pipeline 14 and many bunches of fracturing sliding bush Type Bs 10, pressure transmission passage 3-10 in 9, and the pressure transmission passage 2-11 in many bunches of fracturing sliding bush A types 8 is delivered to many bunches of fracturing sliding bush Type Bs 10, the inlet opening 3-6 of the 9 and inlet opening 2-7 of many bunches of fracturing sliding bush A types 8, by many bunches of fracturing sliding bush Type Bs 10, piston 2-8 in piston 3-7 in 9 and many bunches of fracturing sliding bush A types 8 promotes descending, Type B many bunches of fracturing sliding bushs 10, the 2-9 that builds the pressure built the pressure in a 3-8 and many bunches of fracturing sliding bush A types 8 in 9 closes, beginning sand fracturing after said process completes, fracturing fluid is by the corresponding stratum of pressure break passage 4-5 pressure break of pressure reduction sliding sleeve 11,
B () pressing crack construction completes after, input opens instrument, the pumping of well head turn on pump, when after the 2-9 compound that builds the pressure in the decylization 5-2 opened in instrument and many bunches of fracturing sliding bush A types 8, pressure raises suddenly, well head continues to suppress, when force value is increased to setting value, shear pin 2-6 in many bunches of fracturing sliding bush A types 8 cuts off, inner sleeve 2-3, piston 2-8, build the pressure a 2-9, cradle 2-10 is descending together, expose feed pathway 2-4 and pressure break passage 2-5, pressure is by feed pathway 2-4, pressure transmission pipeline 14 and many bunches of fracturing sliding bush Type Bs 7, pressure transmission passage 3-10 in 6, and the pressure transmission passage 2-11 in many bunches of fracturing sliding bush A types 5 is delivered to many bunches of fracturing sliding bush Type Bs 7, the inlet opening 3-6 of the 6 and inlet opening 2-7 of many bunches of fracturing sliding bush A types 5, by many bunches of fracturing sliding bush Type Bs 7, piston 2-8 in piston 3-7 in 6 and many bunches of fracturing sliding bush A types 5 promotes descending, many bunches of fracturing sliding bush Type Bs 7, the 2-9 that builds the pressure built the pressure in a 3-8 and many bunches of fracturing sliding bush A types 5 in 6 closes, well head continues to suppress, when force value is increased to setting value, the shear pin 5-3 opened in instrument cuts off, decylization 5-2 comes off from opening instrument, open instrument descending, come downwards to the 3-8 compound that builds the pressure in decylization 5-4 and many bunches of fracturing sliding bush Type Bs 9 when the instrument of opening after, pressure raises suddenly, well head continues to suppress, when force value is increased to setting value, shear pin 3-5 in many bunches of fracturing sliding bush Type Bs 9 cuts off, inner sleeve 3-3, piston 3-7, build the pressure a 3-8, cradle 3-9 is descending together, expose pressure break passage 3-4, well head continues to suppress, when force value is increased to setting value, the shear pin 5-5 opened in instrument cuts off, decylization 5-4 comes off from opening instrument, open instrument descending, come downwards to the 3-8 compound that builds the pressure in central block 5-6 and many bunches of fracturing sliding bush Type Bs 10 when the instrument of opening after, pressure raises suddenly, well head continues to suppress, when force value is increased to setting value, shear pin 3-5 in many bunches of fracturing sliding bush Type Bs 10 cuts off, inner sleeve 3-3, piston 3-7, build the pressure a 3-8, cradle 3-9 is descending together, expose pressure break passage 3-4, beginning sand fracturing after said process completes, fracturing fluid is by the pressure break passage 2-5 in many bunches of fracturing sliding bush A types 8, the corresponding stratum of pressure break passage 3-4 pressure break in pressure break passage 3-4 in many bunches of fracturing sliding bush Type Bs 9 and many bunches of fracturing sliding bush Type Bs 10,
C () repeats step (b), carry out the 2nd grade of pressure break unit pressure break;
D () continues to repeat step (b), carry out 3rd level pressure break unit pressure break.
It should be added that the input for the ease of opening instrument, from the first order (bottom) to build the pressure seat and the cradle internal diameter in afterbody (topmost) many bunches of fracturing sliding bushs, and special glue umbrella, the decylization external diameter opening instrument adopts the trend expanded step by step.
Claims (3)
1. one kind many bunches infinite stages well-cementing staged-fracturing tubing strings, it is characterized in that: float shoe, float collar, pressure reduction sliding sleeve and multistage fracturing unit are connected to form by sleeve pipe by this fracturing string from bottom to top, one group many bunches fracturing sliding bush A and many groups many bunches of fracturing sliding bush Type Bs are comprised in every grade of pressure break unit, the many bunches of outside pressure transmission pipelines of fracturing sliding bush connect successively, and many bunches of fracturing sliding bush inside are opened instrument respectively by input and opened one by one; Many bunches of fracturing sliding bush A types are made up of top connection, urceolus, inner sleeve, piston, the seat that builds the pressure, cradle and lower contact, wherein on urceolus, axially punching stroke forms feed pathway and pressure transmission passage, urceolus is provided with radial pressure break passage, urceolus is connected by shear pin with inner sleeve, inside put and be provided with radial inlet opening, cradle and inner sleeve are threaded connection; Many bunches of fracturing sliding bush Type Bs are made up of top connection, urceolus, inner sleeve, piston, the seat that builds the pressure, cradle and lower contact, wherein on urceolus, punching forms continuous print pressure transmission passage, urceolus is provided with radial pressure break passage, urceolus is connected by shear pin with inner sleeve, inside put and be provided with radial inlet opening, cradle and inner sleeve are threaded connection.
2. many bunches of infinite stages well-cementing staged-fracturing tubing strings according to claim 1, it is characterized in that: pressure reduction sliding sleeve is made up of top connection, lower contact and sliding sleeve, wherein top connection is provided with axial pressure transmission passage and radial pressure break passage, sliding sleeve is fixed in top connection by shear pin, and top connection and lower contact are threaded connection.
3. many bunches of infinite stages well-cementing staged-fracturing tubing strings according to claim 2, it is characterized in that: instrument of opening is made up of glue umbrella, decylization, central block, wherein decylization is fixed on central block by shear pin, the quantity often only opening decylization needed for instrument is identical with the number of the many bunches of fracturing sliding bush Type Bs comprised in every grade of pressure break unit, need be identical with the progression of pressure break unit by the quantity opening instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520849220.1U CN205189821U (en) | 2015-10-30 | 2015-10-30 | Many bunches of unlimited level well cementation segmentation fracturing string |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520849220.1U CN205189821U (en) | 2015-10-30 | 2015-10-30 | Many bunches of unlimited level well cementation segmentation fracturing string |
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| CN205189821U true CN205189821U (en) | 2016-04-27 |
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| CN201520849220.1U Expired - Fee Related CN205189821U (en) | 2015-10-30 | 2015-10-30 | Many bunches of unlimited level well cementation segmentation fracturing string |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223920A (en) * | 2016-08-19 | 2016-12-14 | 重庆市能源投资集团科技有限责任公司 | A kind of multiple seam sliding sleeve isolation multiple fracturing device and method |
| CN106639968A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Multi-cluster infinite-order well cementation segmentation fracturing string and fracturing method |
| CN108252701A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | Method for developing oil reservoir in horizontal well |
| CN109812250A (en) * | 2017-11-21 | 2019-05-28 | 张家志 | A kind of method of horizontal well open hole packer staged fracturing |
| CN114482958A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Casing cementing full-bore infinite staged fracturing well completion device and fracturing well completion method thereof |
| CN115875000A (en) * | 2021-09-26 | 2023-03-31 | 中国石油天然气股份有限公司 | Cluster sliding sleeve segmented fracturing well completion pipe string and construction method thereof |
-
2015
- 2015-10-30 CN CN201520849220.1U patent/CN205189821U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639968A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Multi-cluster infinite-order well cementation segmentation fracturing string and fracturing method |
| CN106223920A (en) * | 2016-08-19 | 2016-12-14 | 重庆市能源投资集团科技有限责任公司 | A kind of multiple seam sliding sleeve isolation multiple fracturing device and method |
| CN108252701A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | Method for developing oil reservoir in horizontal well |
| CN109812250A (en) * | 2017-11-21 | 2019-05-28 | 张家志 | A kind of method of horizontal well open hole packer staged fracturing |
| CN114482958A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Casing cementing full-bore infinite staged fracturing well completion device and fracturing well completion method thereof |
| CN115875000A (en) * | 2021-09-26 | 2023-03-31 | 中国石油天然气股份有限公司 | Cluster sliding sleeve segmented fracturing well completion pipe string and construction method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20211030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |