CN108301804A - A kind of slips expanding deep water packer - Google Patents

A kind of slips expanding deep water packer Download PDF

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Publication number
CN108301804A
CN108301804A CN201810342494.XA CN201810342494A CN108301804A CN 108301804 A CN108301804 A CN 108301804A CN 201810342494 A CN201810342494 A CN 201810342494A CN 108301804 A CN108301804 A CN 108301804A
Authority
CN
China
Prior art keywords
slips
central tube
packing element
deep water
slip spider
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810342494.XA
Other languages
Chinese (zh)
Inventor
仇艺嵛
闵思力
帅玉妹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yangtze University
Original Assignee
Yangtze University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangtze University filed Critical Yangtze University
Priority to CN201810342494.XA priority Critical patent/CN108301804A/en
Publication of CN108301804A publication Critical patent/CN108301804A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/127Packers; Plugs with inflatable sleeve
    • E21B33/1277Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/129Packers; Plugs with mechanical slips for hooking into the casing
    • E21B33/1291Packers; Plugs with mechanical slips for hooking into the casing anchor set by wedge or cam in combination with frictional effect, using so-called drag-blocks

Abstract

The present invention relates to a kind of slips expanding deep water packers, belong to deep-sea oil gas drilling operation equipment technical field.The packer includes top connection, friction commutator segment, central tube and slips;Central tube one end is equipped with lower contact, and the other end is equipped with top connection;It is slidably fitted with slip spider on central tube between top connection and lower contact, packing element A and packing element B is equipped with by pressure ring on the central tube of slip spider side, slips is equipped with by slips stop collar and pin on the central tube of the slip spider other side.The packer construction is simple, highly reliable, can effectively avoid the problem that packer squeeze block every when packing element end face shoulder and poor sealing occurs, while solving the problems, such as to occur when existing slips carries out expansion locking barrel that friction is stuck and latch abrasion etc. and the problems such as cause to block low efficiency, poor sealing, slips failure and ground environment made to be polluted and be destroyed;It is used especially suitable for deep-sea oil gas drilling operation.

Description

A kind of slips expanding deep water packer
Technical field
The present invention relates to a kind of slips expanding deep water packers, belong to deep-sea oil gas drilling operation equipment technical field.
Background technology
Existing packer in actual operation, exist squeeze block every when packing element end face occur shoulder phenomenon and cause to seal The problems such as property is poor;It is existing to will appear the stuck and tooth body abrasion etc. that rubs during slips carries out expansion locking barrel simultaneously As causing to block the problems such as efficiency is low, it is not tight to block, slips failure.Especially in the drilling of ocean, due to ocean deepwater oil/gas well More demanding to the protection on stratum, packer sealing poor performance frequently can lead to serious formation contaminant, to ensure deep-sea oil gas The construction safety of drilling operation, it is necessary to make improvements.
Invention content
It is an object of the invention to:It is simple in structure, highly reliable to provide one kind, existing packer can effectively be avoided to squeeze Block every when packing element end face shoulder occurs the problem of poor sealing, while solving existing slips and go out when expansion locking barrel It now rubs stuck and tooth body abrasion etc. and causes to block low efficiency, poor sealing, slips failure, to make ground environment by dirt Dye and the slips expanding deep water packer for destroying problem.
The technical scheme is that:
A kind of slips expanding deep water packer;Including top connection, friction commutator segment, central tube and slips;It is characterized in that:In Heart pipe threaded one end is equipped with lower contact, and central tube other end screw thread is equipped with top connection;Center between top connection and lower contact It is slidably fitted with slip spider on pipe, packing element A and packing element B is equipped with by pressure ring on the central tube of slip spider side, slip spider is another Slips is equipped with by slips stop collar and pin on the central tube of side, passes through friction on the central tube of slips stop collar side Piece swivel nut and flat spring are equipped with friction commutator segment;It is mutually interconnected by the reversing cover that rubs between friction plate swivel nut and slips stop collar It connects;Slips, flat spring, friction commutator segment, friction plate swivel nut and the friction plate swivel nut is flexibly connected with central tube respectively.
Fixed by holding screw between the pressure ring and slip spider, be provided between packing element A and packing element B packing element every Ring.
The length of the packing element A and packing element B differs, and the upper and lower end face chamfering of packing element A and packing element B use different angles Degree.
Multiple righting balls are evenly equipped on the slip spider circumference.
The slip spider is bullet, and the tapering outer surface of slip spider is provided with pilot hole, passes through support in pilot hole Spring is equipped with supporting rod.
The corresponding slips inner surface of the supporting rod is provided with sliding slot, and sliding block is slidably fitted in sliding slot;Sliding block and branch It is flexibly connected by pin between strut.
It is sealed by O-ring seal between the top connection and lower contact and central tube.
The slips outer surface is provided with latch.
The beneficial effects of the invention are as follows:
The slips expanding deep water packer is simple in structure, highly reliable, can effectively avoid packer squeeze block every when glue Cylinder end face shoulder occurs and the problem of poor sealing, while solve existing slips carry out friction occur when expansion locking barrel it is stuck And latch abrasion etc. and cause to block the problems such as efficiency is low, the failure of poor sealing, slips and make ground environment polluted and The problem of destruction;It is used especially suitable for deep-sea oil gas drilling operation.
Description of the drawings
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is enlarged structure schematic diagram at A in Fig. 1;
Fig. 3 is the structural schematic diagram of the slips and slip spider of the present invention;
Fig. 4 is enlarged structure schematic diagram at B in Fig. 3.
In figure:1, top connection, 2, friction commutator segment, 3, central tube, 4, slips, 5, lower contact, 6, slip spider, 7, support bullet Spring, 8, supporting rod, 9, pressure ring, 10, packing element A, 11, packing element B, 12, slips stop collar, 13, holding screw, 14, packing element spacer ring, 15, righting ball, 16, friction plate swivel nut, 17, flat spring, 18, friction reversing cover, 19, sliding slot, 20, sliding block.
Specific implementation mode
The slips expanding deep water packer includes top connection 1, friction commutator segment 2, central tube 3 and slips 4;Central tube 3 Threaded one end is equipped with lower contact 5, and 3 other end screw thread of central tube is equipped with top connection 1;Top connection 1 and lower contact 5 and central tube 3 Between be sealed by O-ring seal.
Slip spider 6 is slidably fitted on central tube 3 between top connection 1 and lower contact 5, slip spider 6 is bullet, slips The tapering outer surface of seat 6 is provided with pilot hole, and pilot hole is interior to be equipped with supporting rod 8 by support spring 7;On 6 circumference of slip spider It is evenly equipped with multiple righting balls 15;It is in middle position always to protect the just slips expanding deep water packer at work.
Packing element A10 and packing element B11, pressure ring 9 and slip spider 6 are equipped with by pressure ring 9 on the central tube 3 of 6 side of slip spider Between fixed by holding screw 13, packing element spacer ring 14 is provided between packing element A10 and packing element B11.
The length of packing element A10 and packing element B11 differ, and the upper and lower end face chamfering of packing element A10 and packing element B11 use different angles Degree;The position up and down of packing element A10 and packing element B11 is equipped with meshy steel wire skeleton;To can effectively avoid packing element at work The problem of end face occurs shoulder and leads to poor sealing.
Slips 4,4 outer surface of slips are equipped with by slips stop collar 12 and pin on the central tube 3 of 6 other side of slip spider It is provided with latch;Latch cone angle is 30 °;Latch section upper end is in oval, lower end feature in rounded shape.
By friction plate swivel nut 16 and flat spring 17 equipped with friction commutator segment 2 on the central tube 3 of 12 side of slips stop collar; It is connected with each other by the reversing cover 18 that rubs between friction plate swivel nut 16 and slips stop collar 12;The slips expanding deep water packer Slips 4, flat spring 17, friction commutator segment 2, friction reversing cover 18 and friction plate swivel nut 16 be slidably connected respectively with central tube 3.
8 corresponding slips of supporting rod, 4 inner surface of the slips expanding deep water packer is provided with sliding slot 19, in sliding slot 19 It is slidably fitted with sliding block 20;Between be flexibly connected by pin.
The connection purpose of sliding block 20 and supporting rod 8, so that there are certain gap, the gaps between slips 4 and slip spider 6 It is filled using lubricating oil.
When the slips expanding deep water packer works, it is serially connected on tubing string by top connection 1 and lower contact 5, and pass through In tubing string tripping in wellbore, after being lowered into precalculated position, oil pipe is above carried to certain altitude dextrorotation, is keeping the same of right-hand torque When transfer tubing string, the cone position of slip spider 6 gradually struts slips 4 at this time so that slips 4 blocks internal surface of sleeve pipe, meanwhile, slips Seat 6 compresses packing element by pressure ring 9, its dilatancy, realization is made to set, since the length of packing element A10 and packing element B11 differ, and The upper and lower end face chamfering of packing element A10 and packing element B11 uses different angles;And the peace of position up and down of packing element A10 and packing element B11 Equipped with meshy steel wire skeleton;Packing element A10 and packing element B11 can effectively avoid packing element end face that shoulder occurs and causes close at work The problem of envelope property difference, improves the leakproofness set;It is stuck to solve appearance friction when existing slips carries out expanding locking barrel And latch abrasion etc. and cause to block the problems such as efficiency is low, the failure of poor sealing, slips, thus avoid ground environment by dirt The problem of dye and destruction.The slips expanding deep water seal has the characteristics that simple in structure, highly reliable every utensil;Especially suitable for depth Extra large oil gas drilling operation uses.

Claims (8)

1. a kind of slips expanding deep water packer;Including top connection(1), friction commutator segment(2), central tube(3)And slips (4);It is characterized in that:Central tube(3)Threaded one end is equipped with lower contact(5), central tube(3)Other end screw thread is equipped with top connection (1);Top connection(1)With lower contact(5)Between central tube(3)On be slidably fitted with slip spider(6), slip spider(6)Side Central tube(3)On pass through pressure ring(9)Packing element A is installed(10)With packing element B(11), slip spider(6)The central tube of the other side(3)On Pass through slips stop collar(12)Slips is installed with pin(4), slips stop collar(12)The central tube of side(3)On pass through friction Piece swivel nut(16)And flat spring(17)Equipped with friction commutator segment(2);Friction plate swivel nut(16)With slips stop collar(12)Between lead to Cross friction reversing cover(18)It is connected with each other;The slips(4), flat spring(17), friction commutator segment(2), friction plate swivel nut (16)With friction reversing cover(18)Respectively with central tube(3)Flexible connection.
2. a kind of slips expanding deep water packer according to claim 1;It is characterized in that:The pressure ring(9)With Slip spider(6)Between pass through holding screw(13)It is fixed, packing element A(10)With packing element B(11)Between be provided with packing element spacer ring(14).
3. a kind of slips expanding deep water packer according to claim 2;It is characterized in that:The packing element A(10) With packing element B(11)Length differ, packing element A(10)With packing element B(11)Upper and lower end face chamfer angle it is different.
4. a kind of slips expanding deep water packer according to claim 2;It is characterized in that:The slip spider(6) Multiple righting balls are evenly equipped on circumference(15).
5. a kind of slips expanding deep water packer according to claim 4;It is characterized in that:The slip spider(6) For bullet, slip spider(6)Tapering outer surface be provided with pilot hole, pass through support spring in pilot hole(7)Support is installed Bar(8).
6. a kind of slips expanding deep water packer according to claim 5;It is characterized in that:The supporting rod(8) Corresponding slips(4)Inner surface is provided with sliding slot(19), sliding slot(19)Inside it is slidably fitted with sliding block(20);Sliding block(20)With support Bar(8)Between be flexibly connected by pin.
7. a kind of slips expanding deep water packer according to claim 6;It is characterized in that:The slips(4)Outside Surface is provided with latch.
8. a kind of slips expanding deep water packer according to claim 1;It is characterized in that:The top connection(1) And lower contact(5)With central tube(3)Between be sealed by O-ring seal.
CN201810342494.XA 2018-04-17 2018-04-17 A kind of slips expanding deep water packer Pending CN108301804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810342494.XA CN108301804A (en) 2018-04-17 2018-04-17 A kind of slips expanding deep water packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810342494.XA CN108301804A (en) 2018-04-17 2018-04-17 A kind of slips expanding deep water packer

Publications (1)

Publication Number Publication Date
CN108301804A true CN108301804A (en) 2018-07-20

Family

ID=62848504

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810342494.XA Pending CN108301804A (en) 2018-04-17 2018-04-17 A kind of slips expanding deep water packer

Country Status (1)

Country Link
CN (1) CN108301804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123755A (en) * 2021-05-10 2021-07-16 盐城市崇达石化机械有限公司 Double-acting packer for oil well pipeline

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123755A (en) * 2021-05-10 2021-07-16 盐城市崇达石化机械有限公司 Double-acting packer for oil well pipeline
CN113123755B (en) * 2021-05-10 2022-02-18 盐城市崇达石化机械有限公司 Double-acting packer for oil well pipeline

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