CN202125288U - Intelligent sliding bush closing tool - Google Patents
Intelligent sliding bush closing tool Download PDFInfo
- Publication number
- CN202125288U CN202125288U CN 201120213508 CN201120213508U CN202125288U CN 202125288 U CN202125288 U CN 202125288U CN 201120213508 CN201120213508 CN 201120213508 CN 201120213508 U CN201120213508 U CN 201120213508U CN 202125288 U CN202125288 U CN 202125288U
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- sliding sleeve
- intelligent sliding
- inner core
- shell fragment
- urceolus
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Abstract
The utility model relates to an intelligent sliding bush closing tool. The intelligent sliding bush closing tool has a cylindrical structure capable of extending in an internal cylinder of an intelligent sliding bush and comprises a spring leaf with a closed lower part and an opened upper part, and a drawable bar inserted in the opening of the spring leaf. A protrusion tooth and a groove which are reversely matched with an annular groove and a protrusion tooth on the inner cylinder of the intelligent sliding bush and can push the inner cylinder to upward move are arranged on the outer surface of the spring leaf; an upper limiter compression head and a lower limiter compression head which can be clamped in and reversely matched with an upper locating slot and a lower locating slot on the inner wall of the inner cylinder of a compound sliding bush are arranged at the uppermost and lowermost parts of the protrusion tooth and the groove of the spring leaf; and a spring leaf compression head with maximum diameter and slopes at the upper end and the lower end is arranged at the upper end of the spring leaf. The intelligent sliding bush closing tool adopts a smart idea of opening a lock with a key, and is matched with other intelligent sliding bush combined tools, thus realizing segmental fracturing without limit on stages.
Description
Technical field
The utility model relates to the device of oil and gas exploitation technical field, particularly relates to a kind of combination tool that is used for the staged fracturing of oil, natural gas completion engineering.
Background technology
In recent years, the key tool that domestic oil gas field is transformed to straight well, horizontal well separate stratum fracfturing is changeed layer sandblast sliding sleeve, the continuous mutually sandblast sliding sleeve of having developed to the different reservoir characteristic.Like patent announcement CN2100480U, name is called pressure break with pilot sandblast sliding sleeve, is primarily aimed at wellfracturing usefulness, and this patent was announced in 1992.Patent publication No. CN200820061922, title pressure break sliding sleeve sandblaster was announced, and was mainly used in gas well fracturing in 2008.Such sandblast sliding sleeve operating principle is to be to adopt the sliding sleeve urceolus and be arranged in the core pipe in the sliding sleeve urceolus, and the two is slidingly matched, and fitting face is provided with shear pin; Has sand jet outlet on the wall of sliding sleeve urceolus; The port of sliding sleeve urceolus has the face that is sealed and matched that is used to accept the startup ball; Start ball and cooperate one by one, start bulb diameter greater than the face internal diameter that is sealed and matched with the face that is sealed and matched.The different balls that start increase according to certain gradient with the face that is sealed and matched in proper order.Drop into the corresponding ball that starts during construction successively, well head is suppressed and is cut off pin, realizes the sliding sleeve unlatching.Such sliding sleeve internal diameter exists a plurality of from the big throttleng surface of little change, can not realize the all-pass warp.The face internal diameter must have differentially owing to be sealed and matched, and staged fracturing, acidifying progression are restricted.After such sliding sleeve is opened, there is not related tool to fix a point to close.
Present petroleum gas horizontal well, straight well subsection acidizing, fracturing technology divide limited entry fracture treatment and classification pressure break mode; Main flow be classification pressure break mode, comprise chemical staged fracturing, packer staged fracturing, jetting staged fracturing, coiled tubing staged fracturing and combined type well-completing process technology.In the classification pressure break mode, using the widest is the packer staged fracturing, and the single mode such as staged fracturing of pressing of pumping bridging plug staged fracturing, pitching+sliding sleeve packer segmentation, annular space packer, two envelope is arranged.
Wherein, the not restriction of annular space packer, pumping bridging plug staged fracturing segments, but fracturing work can not be continuous, needs perforation again after every section operation, needs kill-job to bore plug after operation is accomplished, and duty cycle is long, and expense is high.
The single staged fracturing of pressing of two envelopes need drag tubing string, and packer needs repeatedly seat envelope, long construction period.Pitching+sliding sleeve packer staged fracturing adopts different differential balls and ball seat combination, and fixed tubular column is disposable can accomplish the multistage pressure break, but because different balls according to certain gradient design, are limited to the tubing string size, the packer segments is limited.
Chinese patent document disclosed " horizontal well in segments fracturing string " (publication number: CN201396131 for example; Open day: 2010.02.03); It is made up of tubing string, pressure reduction packer, safety joint, sliding sleeve packer; Pressure reduction packer and sliding sleeve packer are installed on the tubing string, and safety joint also is installed between the two.In oil reservoirs of horizontal well segmentation modification measures, realize that horizontal well adopts the packer staged fracturing, thereby obviously improved the construction general effect.But it only is applicable to the oil field, solves the problem of net horizontal section packer sand card, and this structure is with the mandatory section construction of pressure break packer; After pressure break is accomplished an interval; The upper lifting pipe post carries out the pressing crack construction of next interval, causes the intact back of pressure break packer to be difficult to deblocking like this; Because upper lifting pipe post packer sustains damage, and is poorly sealed, cause pressure break to lose efficacy; Strata pressure was higher after pressure break was accomplished, and was prone to cause blowout during the upper lifting pipe post, led to a disaster; Operability is poor, and technology is loaded down with trivial details, carries tubing string at every turn and needs dismounting well head and pressure break pipeline, and program is complicated, and labor intensity of operating staff is big, poor stability.
Disclosed another document of Chinese patent document " horizontal well mechanical staged fracturing blocking-proof process pipe column " (publication number: CN101338663; Open day: 2009.01.07); It mainly solved the LOW PERMEABILITY RESERVOIR horizontal well in fracturing process since below oil jacket annular space area little with sand jet outlet below the tubing string sand card problem that causes of sand setting; Can only be used in the oilfield horizontal well pressure break; And can not realize that fixed tubular column just carries out the technological requirement of multiple fracturing and combination producing, can not carry out fixed tubular column and not limit the progression staged fracturing.
Chinese patent document also disclosed " horizontal well packer staged fracturing technology tube pillar " (publication number: CN101560877; Open day: 2009.10.21); Though it under the situation of fixed tubular column, realizes through pitching that 2～3 layers the lamination that changes splits technology, but can not realize not limitting the progression staged fracturing.
Other open utility models; Like once tubular column process for combination oil production by multiple fracturing for oil gas well (publication number: CN101418681); Oil, natural gas well multiple fracturing tubing string (publication number: CN201144682) etc.; All adopt pitching to open the sliding sleeve mode, can not carry out fixed tubular column and not limit the progression segmentation, can not close sliding sleeve.
The utility model content
The utility model drags tubing string, the limited difficult problem of segments to the needs that exist in present oil, gas water horizontal well, straight well, directional well subsection acidizing, the pressure break, and a kind of closing tool that is used for the selective switch slide bushing assembly of completion engineering is provided.
The intelligent sliding sleeve closing tool of the utility model is achieved in that
Described intelligent sliding sleeve closing tool 4 is a tubular structure in the inner core 1.3 that can put in intelligent sliding sleeve 1, and, the shell fragment 4.1 of upper opening closed by a bottom and the drawing bar 4.2 that is inserted in shell fragment 4.1 openings are formed;
Annular groove and double wedge that said shell fragment 4.1 external surfaces are provided with on the inner core 1.3 with intelligent sliding sleeve 1 oppositely agree with and can promote double wedge and the groove that inner core 1.3 moves up; The double wedge of said shell fragment 4.1 and the top of groove and the below be provided with interior upper limit device compressing head 4.5, the lower retainer compressing head 4.6 that also oppositely agrees with it in the last locating slot 1.5 that can be stuck in compound sliding sleeve 1 inner core 1.3 inwalls and the following locating slot 1.6; Described shell fragment upper end be provided with the diameter maximum and up and down two ends be domatic shell fragment compressing head 4.4;
The length of said drawing bar 4.2 is greater than the shell fragment total length, and top has and sends into the joint 4.7 that the pipe polyphone connects, and said drawing bar 4.2 is through being threaded in the cylindrical body of shell fragment bottom.
One group of intelligent sliding sleeve closing tool and one group of intelligent sliding sleeve of the utility model are corresponding one by one matching used; Therefore, in practical implementation, also want and cooperate, comprise with following assembly that the utility model is applied on the same day
1. intelligent sliding sleeve
Described intelligent sliding sleeve 1 is in sleeve pipe or the oil pipe, coaxial with sleeve pipe or oil pipe for being connected, with the tubular equipment of external diameter;
The two ends of described intelligent sliding sleeve 1 are the sliding sleeve joint 1.1 that is connected with sleeve pipe or oil pipe, between the sliding sleeve joint 1.1 for the urceolus 1.2 identical with two ends sliding sleeve joint 1.1 connections, external diameter and sleeve pipe or oil pipe and be shorter in length than urceolus 1.2 and its two ends outer wall and urceolus 1.2 inwalls between form movable sealing and can be in urceolus 1.2 axially movable inner core 1.3;
The barrel of described urceolus 1.2 upper ends has sand jet outlet 1.4; When inner core 1.3 moves to the position near urceolus 1.2 lower ends by the position of being close to urceolus 1.2 upper ends of initial state, inner core 1.3 upper ends move to the lower end of sand jet outlet 1.4 and expose sand jet outlet 1.4;
There is a component to be distributed in annular groove and double wedge on the inwall of inner core 1.3, that spacing differs in the described inner core 1.3 vertically;
On described inner core 1.3 inwalls the top of annular groove and double wedge and the below be respectively arranged with upper limit position groove 1.5 and lower limit groove 1.6.
2. intelligent sliding sleeve is opened instrument
It is the tubular assembly that can insert intelligent sliding sleeve 1 inside and mate with intelligent sliding sleeve 1 that described intelligent sliding sleeve is opened instrument; It is made up of seal, ball cage assembly and three sections cylindrical shells of cutting ferrule assembly to the upper end from the lower end successively; Said intelligent sliding sleeve is opened the groove tooth forward that has on the cutting ferrule assembly external surface of instrument with intelligent sliding sleeve 1 inner core 1.3 inwalls and is agreed with and can promote double wedge and the groove that intelligent sliding sleeve 1 inner core 1.3 moves to the lower end.
3. fishing tool
Described fishing tool be can insert described intelligent sliding sleeve open instrument upper end the cutting ferrule assembly in the tubular assembly;
The lower end of described fishing tool body is provided with can catch the jump ring that rises of salvaging tooth.
Use comprises the slide bushing assembly of the intelligent sliding sleeve closing tool of the utility model, can accomplish the staged fracturing operation of not limitting progression.Described method of operating comprises the steps:
1, prefabricated one group of a plurality of described intelligent sliding sleeve 1 with different grooves and double wedge combination is installed in the sleeve pipe or oil pipe of each oil in oil, the gas well, gas reservoir section from top to bottom successively;
2, successively supporting intelligent sliding sleeve is opened implement pump and send into well; After each supporting intelligent sliding sleeve was opened instrument and entered in each corresponding sliding sleeve, the double wedge of corresponding cutting ferrule assembly external surface snapped in the groove and double wedge that forward agrees with mutually with it on described intelligent sliding sleeve 1 inner core 1.3 inwalls with groove;
3, after oil, the gas well tubing string pressurization, each specific intelligent sliding sleeve is opened instrument and is driven intelligent sliding sleeve with matching and move down, thereby opens pairing intelligent sliding sleeve 1, exposes sand jet outlet 1.4, implements the fracturing work of this well section;
4, from the pit shaft lower end to the upper end, repeat above-mentioned 2,3 process in each oil, gas reservoir section that different intelligent sliding sleeves 1 is installed, realize not limitting the progression staged fracturing, the discharge opeing that drives a well after the pressure break gets into and goes into operation.
The special contribution of the utility model is; When situation such as water breakthrough occurring when a certain section formation oil gas well, the method for prior art is difficult to realize stopping the fluid output of this section.And the utility model can be lowered to corresponding intelligent sliding sleeve closing tool and closes.Concrete operating process is:
1. drop into fishing tool earlier, salvage the described intelligent sliding sleeve of recovery and open instrument;
2. when specific oil of needs sealing, gas reservoir section; After said intelligent sliding sleeve opened instrument and salvage intelligent sliding sleeve; The intelligent sliding sleeve closing tool of the utility model can be lowered to the intelligent sliding sleeve closing tool 4 that is complementary with the specific intelligent sliding sleeve 1 of this section through the pipe string; Insert said intelligent sliding sleeve 1 inside; Annular double wedge on its external surface and groove snap in annular groove and the double wedge that intelligent sliding sleeve 1 inner core 1.3 inwalls oppositely agree with it mutually, and the upper end of intelligent sliding sleeve closing tool 4 is connected with coiled tubing or is connected (casing fracturing) with oil pipe, move to the upper end and block sand jet outlet 1.4 thereby spur intelligent sliding sleeve 1 inner core 1.3; Close this intelligent sliding sleeve 1, stop the fluid output of this section.
In addition, need to prove that the order of mentioning among this paper up and down is according to being last near well head, is down away from well head.
The core idea of the utility model is to open different locks with different keys, and utilizes width, shape and the incompatible realization of teeth groove sets of numbers of teeth groove.Through pumping intelligent sliding sleeve is opened instrument with being pumped into the down-hole during construction; Each specific intelligence type sliding sleeve is opened instrument will be transported to the specific intelligence type sliding sleeve place supporting with it; Get in its inner core; Corresponding cutting ferrule assembly flicks outer slip sleeve or flicks its shell fragment, and the double wedge of said cutting ferrule assembly external surface and groove snap in groove and the double wedge that is complementary with it in the described intelligent sliding sleeve inner core; Simultaneously, intelligent sliding sleeve is opened and is provided with latus rectum consistent ball seat and ball cage in the instrument, and behind the tubing string one-way sealing, the tubing string pressurization promotes intelligent sliding sleeve and opens instrument and move down, and promotes the sliding sleeve inner core simultaneously downwards, thereby opens sliding sleeve.Because sliding sleeve internal diameter is the all-pass footpath, sliding sleeve quantity does not receive tubing string size and the restriction of ball size, through the combination of sliding sleeve and packer, just can realize not limitting the progression staged fracturing.
Use through the utility model; More conventional fracturing string effectively raises horizontal well, straight well pressure break segments, has simplified the oil and gas development flow chart, has shortened the construction operation cycle; Reduced kill-job, repeatedly transformed injury to reservoir, the final-period management of oil gas well is simple and convenient.The utility model has reduced development cost, has improved the whole development level and the development benefit of oil gas field.The utility model and kit also suit in oil, natural gas straight well, directional well subsection acidizing, fracturing reform.Can also be as flow string, being applied to needs in the petroleum gas production field of fixed point switching sliding sleeve.
Description of drawings
Fig. 1 is the structural representation of intelligent sliding sleeve.
Fig. 2 is the structural representation of intelligent sliding sleeve closing tool 4.
Fig. 3 is the structural representation that intelligent sliding sleeve closing tool 4 gets into the intelligent sliding sleeve 1 that matches.
The specific embodiment
The practical implementation process of the utility model is following:
1. salvage intelligent sliding sleeve device for opening: be lowered to intelligent sliding sleeve and open the instrument fisher, its jump ring that rises is caught the salvaging tooth, on carry; Open pod apertures, downforce UNICOM is carried in the continuation on the ball seat; Open tool body groove tooth withdrawal, on extract intelligent sliding sleeve device for opening.
2. need close sliding sleeve:
Be lowered to intelligent sliding sleeve closing tool, get into the sliding sleeve inner core that is complementary through locator, principle is with opening instrument; Because closing tool has the opposing slot tooth that is complementary, after the grappling of opposing slot tooth, the upper lifting pipe post; Move on the sliding sleeve inner core and close sand jet outlet, sliding sleeve is closed, and locator is extruded simultaneously; The groove tooth of the instrument of closing withdraws from the matching slot tooth of sliding sleeve core pipe, takes out closing tool.
Claims (2)
1. an intelligent sliding sleeve closing tool is characterized in that
Described intelligent sliding sleeve closing tool (4) is a tubular structure in the inner core (1.3) that can put in intelligent sliding sleeve (1), and, the shell fragment (4.1) of upper opening closed by a bottom and the drawing bar (4.2) that is inserted in shell fragment (4.1) opening are formed;
Said shell fragment (4.1) external surface is provided with annular groove and double wedge on the inner core (1.3) with intelligent sliding sleeve (1) oppositely to be agreed with and can promote double wedge and the groove that inner core (1.3) moves up; The double wedge of said shell fragment (4.1) and the top of groove and the below be provided with interior upper limit device compressing head (4.5), the lower retainer compressing head (4.6) that also oppositely agrees with it in the last locating slot (1.5) that can be stuck in compound sliding sleeve (1) inner core (1.3) inwall and the following locating slot (1.6); Described shell fragment upper end be provided with the diameter maximum and up and down two ends be domatic shell fragment compressing head (4.4);
The length of said drawing bar (4.2) is greater than the shell fragment total length, and top has and sends into the joint (4.7) that the pipe polyphone connects, and said drawing bar (4.2) is through being threaded in the cylindrical body of shell fragment bottom.
2. intelligent sliding sleeve closing tool as claimed in claim 1 is characterized in that:
Described intelligent sliding sleeve (1) is in sleeve pipe or the oil pipe, coaxial with sleeve pipe or oil pipe for being connected, with the tubular equipment of external diameter;
The two ends of described intelligent sliding sleeve (1) are the sliding sleeve joint (1.1) that is connected with sleeve pipe or oil pipe; Between the sliding sleeve joint (1.1) for the urceolus (1.2) identical with two ends sliding sleeve joints (1.1) connection, external diameter and sleeve pipe or oil pipe and be shorter in length than urceolus (1.2) and its two ends outer wall and urceolus (1.2) inwall between form movable sealing and can be in urceolus (1.2) axially movable inner core (1.3);
The barrel of described urceolus (1.2) upper end has sand jet outlet (1.4); When inner core (1.3) moves to the position near urceolus (1.2) lower end by the position of being close to urceolus (1.2) upper end of initial state, inner core (1.3) upper end moves to the lower end of sand jet outlet (1.4) and exposes sand jet outlet (1.4);
There is a component to be distributed in annular groove and double wedge on the inwall of inner core (1.3), that spacing differs in the described inner core (1.3) vertically;
On described inner core (1.3) inwall the top of annular groove and double wedge and the below be respectively arranged with upper limit position groove (1.5) and lower limit groove (1.6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120213508 CN202125288U (en) | 2011-06-22 | 2011-06-22 | Intelligent sliding bush closing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120213508 CN202125288U (en) | 2011-06-22 | 2011-06-22 | Intelligent sliding bush closing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202125288U true CN202125288U (en) | 2012-01-25 |
Family
ID=45488359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120213508 Expired - Lifetime CN202125288U (en) | 2011-06-22 | 2011-06-22 | Intelligent sliding bush closing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202125288U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012175028A1 (en) * | 2011-06-22 | 2012-12-27 | 中国石油化工股份有限公司 | Slip-on fracturing component, device using same and method for device use |
| CN110984912A (en) * | 2019-12-23 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Fracturing construction process utilizing infinite grading full-bore fracturing sliding sleeve assembly system |
| CN111396015A (en) * | 2020-05-19 | 2020-07-10 | 中国海洋石油集团有限公司 | Desirable big latus rectum fracturing sliding sleeve of ball seat |
| CN114059964A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly |
-
2011
- 2011-06-22 CN CN 201120213508 patent/CN202125288U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012175028A1 (en) * | 2011-06-22 | 2012-12-27 | 中国石油化工股份有限公司 | Slip-on fracturing component, device using same and method for device use |
| US9708889B2 (en) | 2011-06-22 | 2017-07-18 | China Petroleum & Chemical Corporation | Sleeve fracturing assembly, device using the same and method for using the same |
| US10450837B2 (en) | 2011-06-22 | 2019-10-22 | China Petroleum & Chemical Corporation | Sleeve fracturing assembly, device using the same and method for using the same |
| CN110984912A (en) * | 2019-12-23 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Fracturing construction process utilizing infinite grading full-bore fracturing sliding sleeve assembly system |
| CN111396015A (en) * | 2020-05-19 | 2020-07-10 | 中国海洋石油集团有限公司 | Desirable big latus rectum fracturing sliding sleeve of ball seat |
| CN114059964A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly |
| CN114059964B (en) * | 2020-07-31 | 2024-05-28 | 中国石油化工股份有限公司 | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120125 |
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| CX01 | Expiry of patent term |