CN202125287U - Anchor fluke type sliding sleeve opening tool - Google Patents
Anchor fluke type sliding sleeve opening tool Download PDFInfo
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- CN202125287U CN202125287U CN 201120213511 CN201120213511U CN202125287U CN 202125287 U CN202125287 U CN 202125287U CN 201120213511 CN201120213511 CN 201120213511 CN 201120213511 U CN201120213511 U CN 201120213511U CN 202125287 U CN202125287 U CN 202125287U
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Abstract
The utility model relates to an anchor fluke type sliding sleeve opening tool. A sealing body of the tool includes packing components at both ends of the barrel body of the sealing body and a horn-shaped composite ball seat positioned at the uppermost end of the sealing body; the inner diameter of the half upper part of the barrel body of a ball cage combination body is greater than that of the half lower part; the ball cage combination body includes a ball cage composed of an upper ball cage positioned on the half upper part and a lower ball cage positioned on the half lower part; the upper ball cage is provided with a group of openings connected with the inner space of the half upper part of the barrel body; the top lower part of the lower ball cage is close to the inner wall of the half lower part of the barrel body, and the inner diameter of the lower part of the lower ball cage is gradually reduced and the openings at the lowest end extend in the composite ball seat at upper end of the sealing body; the clamping sleeve combination body of the tool is composed of a group of elastic sheets with root parts connected to the upper end of the barrel body of the ball cage combination body; the outer surfaces of the elastic sheets are provided with annular grooves on an intelligent sliding sleeve inner barrel which are positively accorded with convex teeth. The novel conception of opening different locks with different keys fulfills staged fracturing under the stage unrestricting condition.
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 inventions; 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 instrument of opening that is used for the selective switch slide bushing assembly of completion engineering is provided.
The anchor fluke formula sliding sleeve of the utility model is opened instrument, is achieved in that
It is the tubular assemblies that can insert intelligent sliding sleeve 1 inside and mate with intelligent sliding sleeve 1 that described anchor fluke formula sliding sleeve is opened instrument 3; 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;
The seal that said anchor fluke formula sliding sleeve is opened instrument 3 comprises packing assembly B-13.1, the packing assembly B-23.2 at its cylindrical shell two ends and is positioned at described seal tubaeform compound ball seat B3.3 topmost;
Said anchor fluke formula sliding sleeve is opened the internal diameter of cylindrical shell the first half of instrument 3 ball cage assemblys greater than the internal diameter of the latter half, in described ball cage assembly, be provided with one by be positioned at the first half on ball cage B3.7 be positioned at the ball cage that ball cage B3.6 forms under the latter half; Having one group of perforate on the described upward ball cage B3.7 cage wall communicates with the inner space of cylindrical shell the first half; The inwall of described ball cage B3.6 bottom down and this section cylindrical shell the latter half is close to, and the internal diameter of following ball cage B3.6 bottom dwindles gradually and perforate bottom puts in the compound ball seat B3.3 of said seal upper end; In the described ball cage B3.6 down the spheroid B3.5 of a diameter greater than following ball cage B3.6 bottom perforate arranged; Described ball cage B3.6 down middle part has the pod apertures B3.8 that is communicated with ball cage interior or exterior space; Described compound ball seat B3.3 is provided with the sealing ring B3.4 that cooperates with described ball cage B3.6 bottom down; The outer setting of the described ball cage B3.7 of going up upper end has the tooth of salvaging B3.9; And the first half of described ball cage assembly cylindrical shell is beginning corresponding to radial position place of salvaging tooth B3.9, and its internal diameter upwards is contracted to the maximum outside diameter less than the described ball cage B3.7 of going up gradually;
Said anchor fluke formula sliding sleeve is opened the cutting ferrule assembly of instrument 3 and is made up of the shell fragment 3.10 that one group of root is connected said ball cage assembly cylindrical shell upper end; The external surface of described shell fragment 3.10 be provided with described intelligent sliding sleeve 1 inner core 1.3 on annular groove and double wedge forward agree with and can promote double wedge and the groove that inner core 1.3 moves down, the double wedge of shell fragment 3.10 external surfaces and the top of groove and the below be provided with the interior limiting tooth 3.11 of the last locating slot 1.5 that can be stuck in intelligent sliding sleeve 1 inner core 1.3 inwalls and following locating slot 1.6.
It is corresponding one by one matching used that one group of intelligent sliding sleeve of the utility model is opened instrument and one group of intelligent sliding sleeve and one group of intelligent sliding sleeve closing tool; 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 closing tool
The described intelligent slide bushing assembly of the utility model also comprises intelligent sliding sleeve closing tool 4;
Described intelligent sliding sleeve closing tool 4 is a tubular structure in the inner core 1.3 that can put in said 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.
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.
Importantly, in the described slide bushing assembly of the utility model, the latus rectum of ball cage bottom perforate was the same under all intelligent sliding sleeves were opened in the instrument.
In addition, the described sectional area of going up one group of perforate in the ball cage should be equal to or greater than down the sectional area of ball cage bottom perforate.
Use comprises that the intelligent anchor fluke formula of the utility model sliding sleeve opens the slide bushing assembly of instrument, 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.
More specifically; After each supporting intelligent sliding sleeve is opened instrument and entered in each corresponding sliding sleeve in the above step 2, thereby corresponding cutting ferrule assembly flicks said outer field slip sleeve 2.13 or flicks double wedge and the groove that said shell fragment 3.10 makes said intelligent sliding sleeve open the cutting ferrule assembly external surface of instrument and snaps in the groove and double wedge that forward agrees with it on said intelligent sliding sleeve 1 inner core 1.3.
In above-described operation, when after described intelligent sliding sleeve is opened instrument and is used to complete, needing to reclaim, can adopt the input fishing tool, salvage and reclaim described intelligent sliding sleeve and open instrument.
When specific oil of needs sealing, gas reservoir section; After said intelligent sliding sleeve opened instrument and salvage intelligent sliding sleeve; The method 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 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.
In sum, the selective switch slide bushing assembly of the utility model has following outstanding characteristics:
(1) the utility model tubing string internal diameter all-pass footpath, sliding sleeve quantity is not limited by the tubing string diameter.
(2) the selective switch slide bushing assembly of the utility model and method have solved the guardian technique difficult problem that fractured well is not limit the progression staged fracturing.
(3) through the application of the utility model, can be up to the standard well, straight well etc. are not limit progression subsection acidizing, pressure break, the sliding sleeve switch of can fixing a point arbitrarily, have given prominence to all-pass footpath, low, the short characteristics of time of construction cost.
(4) selective switch slide bushing assembly of the utility model and method also are fit to other needs and fix a point in the petroleum gas practical applications field of switching sliding sleeve in the pressure break with the pressure break of shale gas and coal bed gas.。
(5) this method is through compound in sleeve pipe, can also realize cased well not lower packet do not limit the progression staged fracturing.
In recent years, horizontal well technology has become the key technology of the fine and close low permeability reservoirs of exploitation.But that is that all right is ripe for the horizontal well in segments fracturing technique, and the major technology bottleneck is that number of fragments is restricted.The present invention applies petroleum gas engineering field; The limited core of horizontal well in segments number is crucial with breaking through; Have a extensive future future, and it can be widely used in the oil gas well and not limit progression subsection acidizing, fracturing reform and needs fixed point commonly used to close in the producing well of sliding sleeve.
Compare with conventional levels well acidizing, fracturing reform method; Patent utilization of the present invention show unique characteristics intelligent selectivity fixed point switching sliding sleeve and kit; The one-to-one relationship of opening the well tooth through sliding sleeve and sliding sleeve realizes that sliding sleeve do not limit progression to specify and put and open, and this method has solved a key technology difficult problem of not limitting the progression staged fracturing.After fracturing device and gas production, completion acidifying, fracturing string combine; Can realize that the oil gas well do not limit progression subsection acidizing, fracturing reform; And realize that multistage closes the purpose of adopting, this method can be suitable for sleeve pipe and open-hole horizontal well,, directional well, straight well staged fracturing or do not limit the progression staged fracturing.Sliding sleeve inner core latus rectum is identical, after the taking-up sliding sleeve is opened instrument, has realized the all-pass in the air collecting pipe, has overcome conventional pressure break and has started the disadvantage that ball is trapped in the oil pipe to be influenced output, influence work such as later stage production logging; When situation such as water breakthrough occurring when the oil gas well, can be lowered to corresponding intelligent sliding sleeve closing tool and close.Through the use of this patent, more conventional fracturing string effectively raises the well fracturing segments, has simplified the oil and gas development flow chart, shortened the construction operation cycle, has reduced kill-job, has repeatedly transformed injury to reservoir, and the final-period management of oil gas well is simple and convenient.The invention of this method has reduced development cost, has improved the whole development level and the development benefit of oil gas field.This method is through compound in sleeve pipe, can also realize cased well not lower packet do not limit the progression staged fracturing.
Description of drawings
Fig. 1 is the structural representation of intelligent sliding sleeve
Fig. 2 is the structural representation that anchor fluke formula sliding sleeve is opened instrument.
Fig. 3 is the structural representation of intelligent sliding sleeve closing tool 4.
The specific embodiment
The practical implementation process of the utility model is following:
1) one group of described intelligent sliding sleeve with the combination of prefabricated different tongues and recessed tooth be installed in successively from top to bottom, in the sleeve pipe or oil pipe of each oil in the gas well, gas reservoir section;
2) successively supporting intelligent sliding sleeve is opened implement pump and send into well; Each supporting intelligent sliding sleeve is opened instrument behind each corresponding sliding sleeve place, and corresponding cutting ferrule assembly flicks outer slip sleeve and gets into tongue and the recessed tooth that is complementary with it in the described intelligent sliding sleeve;
3) after oil, the pressurization of gas well tubing string, each specific intelligent sliding sleeve is opened instrument and is opened each supporting intelligent sliding sleeve, exposes the hole of sandblasting, and implements the fracturing work of this well section;
4) from the pit shaft lower end to the upper end, repeat above-mentioned 2 in each oil, gas reservoir section that different intelligent sliding sleeves is installed), 3) process, realize not limitting the progression staged fracturing, the discharge opeing that drives a well after the pressure break gets into and goes into operation.
Therefore, the anchor fluke formula sliding sleeve of the utility model is opened instrument and is had specific double wedge and groove, and this is opened, and instrument is close to oil pipe or sleeve pipe is pumped into well.If the groove tooth of double wedge that the instrument of opening is specific and groove groove tooth and sliding sleeve inner core does not match, device for opening just gets into and continues down, matees each other up to the groove tooth.Instrument is opened in locking then, the tubing string pressurization, and the sliding sleeve inner core moves down, and the packing_seal assembly gets into assigned address sealing tubing string, opens sand jet outlet simultaneously, sets up tubing string and stratum flow channels, sand fracturing.
Repeat above-mentioned process, realize not limitting the purpose of progression staged fracturing construction.Each section all after the pressure break, go into operation by the discharge opeing that drives a well.
Salvage intelligent sliding sleeve device for opening in addition if desired, be lowered to the intelligent fisher of opening instrument, salvage sliding sleeve and open instrument.The practical implementation process is:
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, opens tool body groove tooth withdrawal, on extract intelligent sliding sleeve device for opening.
After having salvaged sliding sleeve and having opened instrument, close sliding sleeve if desired, be lowered to intelligent sliding sleeve closing tool with tubing string, close sliding sleeve.The practical implementation process is:
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.
Therefore the utility model satisfies fractured well and does not limit the transformation of progression staged fracturing, realized closing the layer drive a well discharge opeing, close a layer gas production, effectively reduced the construction operation cost, improved the oil-gas field development benefit.
The utility model mainly is applicable to oil, gas water horizontal well infinite stages pressure break, acidifying.
The utility model also is applicable to oil, natural gas straight well, directional well infinite stages multi-layer fracturing, acidifying.
Claims (6)
1. an anchor fluke formula sliding sleeve is opened instrument, it is characterized in that
It is the tubular assembly that can insert intelligent sliding sleeve (1) inside and mate with intelligent sliding sleeve (1) that described anchor fluke formula sliding sleeve is opened instrument (3); 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 double wedge and the groove that inner core (1.3) that the groove tooth forward that has on the cutting ferrule assembly external surface of instrument with inner core (1.3) inwall of intelligent sliding sleeve (1) agrees with and can promote intelligent sliding sleeve (1) moves to the lower end;
The seal that said anchor fluke formula sliding sleeve is opened instrument (3) comprises packing assembly B-1 (3.1), the packing assembly B-2 (3.2) at its cylindrical shell two ends and is positioned at described seal tubaeform compound ball seat B (3.3) topmost;
Said anchor fluke formula sliding sleeve is opened the internal diameter of cylindrical shell the first half of instrument (3) ball cage assembly greater than the internal diameter of the latter half, in described ball cage assembly, be provided with one by be positioned at the first half on ball cage B (3.7) and be positioned at the ball cage that ball cage B (3.6) forms under the latter half; Having one group of perforate on described upward ball cage B (3.7) the cage wall communicates with the inner space of cylindrical shell the first half; The inwall of described ball cage B (3.6) bottom down and this section cylindrical shell the latter half is close to, and the internal diameter of following ball cage B (3.6) bottom dwindles gradually and perforate bottom puts in the compound ball seat B (3.3) of said seal upper end; In the described ball cage B (3.6) down the spheroid B (3.5) of a diameter greater than following ball cage B (3.6) bottom perforate arranged; Described ball cage B (3.6) down middle part has the pod apertures B (3.8) that is communicated with ball cage interior or exterior space; Described compound ball seat B (3.3) is provided with the sealing ring B (3.4) that cooperates with described ball cage B (3.6) bottom down; The outer setting of the described ball cage B (3.7) of going up upper end has the tooth B (3.9) of salvaging; And the first half of described ball cage assembly cylindrical shell is beginning corresponding to radial position place of salvaging tooth B (3.9), and its internal diameter upwards is contracted to the maximum outside diameter less than the described ball cage B (3.7) of going up gradually;
Said anchor fluke formula sliding sleeve is opened the cutting ferrule assembly of instrument (3) and is made up of the shell fragment (3.10) that one group of root is connected said ball cage assembly cylindrical shell upper end; The external surface of described shell fragment (3.10) be provided with described intelligent sliding sleeve (1) inner core (1.3) on annular groove and double wedge forward agree with and can promote double wedge and the groove that inner core (1.3) moves down, the double wedge of shell fragment (3.10) external surface and the top of groove and the below be provided with the last locating slot (1.5) and the interior limiting tooth (3.11) of following locating slot (1.6) that can be stuck in intelligent sliding sleeve (1) inner core (1.3) inwall.
2. anchor fluke formula sliding sleeve as claimed in claim 1 is opened instrument, it 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).
3. anchor fluke formula sliding sleeve as claimed in claim 1 is opened instrument, it is characterized in that:
The latus rectum of ball cage bottom perforate was the same under all intelligent sliding sleeves were opened in the instrument (3) in described one group.
4. intelligent sliding sleeve as claimed in claim 1 is opened instrument, it is characterized in that:
The sectional area that described intelligent sliding sleeve is opened in the instrument (3) one group of perforate in the ball cage on each is equal to or greater than down the sectional area of ball cage bottom perforate.
5. anchor fluke formula sliding sleeve as claimed in claim 1 is opened instrument, it is characterized in that:
Described intelligent sliding sleeve is opened the tooth-shape structure that is furnished with a circle sand control card among packing assembly A-1 (3.1) and the packing assembly A-2 (3.2) at the seal two ends in the instrument (3) on the cross section annular outer surface.
6. anchor fluke formula sliding sleeve as claimed in claim 1 is opened instrument, it is characterized in that:
The latus rectum of ball cage bottom perforate was the same under described one group of anchor fluke formula sliding sleeve was opened in the instrument (3);
The sectional area that described anchor fluke formula sliding sleeve is opened in the instrument (3) one group of perforate in the ball cage on each is equal to or greater than down the sectional area of ball cage bottom perforate;
Described anchor fluke formula sliding sleeve is opened the tooth-shape structure that is furnished with a circle sand control card among packing assembly A-1 (3.1) and the packing assembly A-2 (3.2) at the seal two ends in the instrument (3) on the cross section annular outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120213511 CN202125287U (en) | 2011-06-22 | 2011-06-22 | Anchor fluke type sliding sleeve opening tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120213511 CN202125287U (en) | 2011-06-22 | 2011-06-22 | Anchor fluke type sliding sleeve opening tool |
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| CN202125287U true CN202125287U (en) | 2012-01-25 |
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| CN 201120213511 Expired - Lifetime CN202125287U (en) | 2011-06-22 | 2011-06-22 | Anchor fluke type sliding sleeve opening tool |
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Cited By (9)
| 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 |
| CN103541709A (en) * | 2012-07-13 | 2014-01-29 | 中国石油化工股份有限公司 | Fracturing sliding sleeve assembly |
| CN103573239A (en) * | 2012-07-31 | 2014-02-12 | 中国石油化工股份有限公司 | Staged fracturing device and using method thereof |
| CN104632113A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Infinite-order fracturing sand blasting sliding sleeve opening tool and operation method thereof |
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