CN205243462U - Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus - Google Patents

Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus Download PDF

Info

Publication number
CN205243462U
CN205243462U CN201521042401.XU CN201521042401U CN205243462U CN 205243462 U CN205243462 U CN 205243462U CN 201521042401 U CN201521042401 U CN 201521042401U CN 205243462 U CN205243462 U CN 205243462U
Authority
CN
China
Prior art keywords
expansion
expansion tube
pipe
latus rectum
center
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.)
Expired - Fee Related
Application number
CN201521042401.XU
Other languages
Chinese (zh)
Inventor
赵智玮
温盛魁
田玉刚
杨慧
张化强
高恒超
朱瑛辉
任家敏
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.)
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering Shengli Co
Original Assignee
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering Shengli Co
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 China Petroleum and Chemical Corp, Sinopec Research Institute of Petroleum Engineering Shengli Co filed Critical China Petroleum and Chemical Corp
Priority to CN201521042401.XU priority Critical patent/CN205243462U/en
Application granted granted Critical
Publication of CN205243462U publication Critical patent/CN205243462U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus, the anchoring device, hydraulic pusher, inflation assembly, the tail pipe short circuit that connect gradually including top -down. The inflation assembly includes that well core rod, thin wall expansion pipe, inflation awl, tail pipe become the knot, the empty cover of thin wall expansion pipe is outside at well core rod to form the annular space each other, first section of the thin wall expansion pipe with second section through middle taper pipe transition, form the expansion pipe studio between second section inner wall of thin wall expansion pipe and taper pipe inner wall and well core rod outer wall, the taper pipe transition department installation in the expansion pipe studio is expanded and is bored, thin wall expansion pipe lower extreme union tail becomes to be detained. Well core rod lower part is connected with the single current valve. The expansion pipe outer wall is provided with metallic sealing ring, the rubber seal area of interval staggered arrangement. The utility model discloses can realize consolidating the intraductal big latus rectum in back, sealed respond well after the subsidy is accomplished, adaptability is wide, can reduce risks such as underground corrosion perforation.

Description

Shallow-layer cover leaks large latus rectum expansion of metal bracing means
Technical field
The utility model relates to oil field casing patching technology, and specifically shallow-layer cover leaks large latus rectum expansion of metal and adds and be fixedly mounted withPut.
Background technology
Casing patching, utilizes special steel pipe exactly, to there is corrosion hole, break, the sleeve pipe at position, broken building subsidizes,Adopt mechanical force that special steel pipe is tightly subsidized on internal surface of sleeve pipe, shutoff leak source, recovers oil-water well and normally produces. ExpandPipe-in-pipe subsidy technology is to adopt the entity steel pipe of special substance as patching tube, utilizes its plastic deformation ability to make its expansionAnd produce permanent deformation, and it is expanded afterwards employing suspension potted component and outer layer sleeve inwall is close to, thus reach sleeve pipeThe object that subsidy is repaired. Patch device is by hydraulic power parts, sprung parts, seal member and the set of tools such as parts of giving upBecome. Specific works process is: the special steel pipe of subsidy is lowered to casing damage position with tubing string, in tubing string, builds the pressure,Under hydraulic action, the sprung parts in subsidy instrument is anchored on internal surface of sleeve pipe tightly, when hydraulic pressure continues raise and reachWhen certain value, in subsidy instrument, hydraulic coupling is transformed into machine power by fluid cylinder and pitch brace, and the pull bar in special steel pipe existsUnder fluid cylinder effect, upwards regain, drive swollen first of steel pipe bottom to move upward, swollen head enters special steel pipe smoothly, entersOne step is also tightly subsidized complete special steel pipe distending on internal surface of sleeve pipe, thereby realizes the sleeve pipe benefit of combination metal sealedPaste and repair.
But there is following problem in original Expandable Casing Patching Technology application: the one, and expansion tube tube wall is thicker, and expansion tube is swollenAfter swollen reparation, well latus rectum significantly diminishes, and the downhole tool size of transferring after reparation is restricted; The 2nd, subsurface environment complexity,There is certain corrosivity, if the subsidy tube wall that expands is crossed the thin corrosion failure inefficacy that easily occurs; The 3rd, expansion patching tube is swollenIn swollen process, easily produce plastic deformation, not there is bending deformation because axial force is excessive in dilation, causes expanding and mendPasting pipe cannot proceed to expand. Therefore,, for improving casing patching technique successful rate, need to invention one meet large latus rectumThe tubing string of the requirement that reliability is high and technique, application and the Technological adaptability of expansion expansion tube casing patching technology.
Utility model content
The purpose of this utility model is to provide shallow-layer cover to leak large latus rectum expansion of metal bracing means, can realize and reinforcing in rear pipeLarge latus rectum; Subsidized rear sealing effectiveness good, wide adaptability, can reduce downhole corrosion perforation equivalent risk; Shallow after subsidyThe large latus rectum of layer sleeve pipe, is convenient to other size instruments and is lowered to, other process implementings.
In order to reach above-mentioned purpose, the utility model has adopted following technical scheme, and shallow-layer cover leaks large latus rectum expansion of metal and addsFixing apparatus, comprises the anchoring device, hydraulic pusher, expansion assembly, the tail pipe short circuit that connect successively from top to bottom.
Described expansion assembly comprises center-pole, thin-walled expansion tube, expansion cone, tail pipe variable buckle, described thin-walled expansion tube empty setIn center-pole outside, and form each other annular space, the upper semisection of described thin-walled expansion tube and lower semisection pass through middleTaper Pipe transition forms expansion tube operating room between thin-walled expansion tube lower semisection inwall and Taper Pipe inwall and center-pole outer wall,Taper Pipe transition position in expansion tube operating room is installed expansion cone, described thin-walled expansion tube lower end union tail variable buckle.
Described expansion tube upper end connects adjustable ring, and described center-pole top is connected with the center pull rod of hydraulic pusher, bottomBe connected with ball-and-seat, ball-and-seat comprises the steel ball of installing on ball seat and ball seat.
Described expansion tube outer wall is provided with interval-staggered metallic packing ring, rubber seal tape.
Described metallic packing ring is welded in the pregroove marks on expansion tube outer wall, and rubber seal tape vulcanizes on expansion tube outer wallOn preset steel frame band.
Described center-pole arranges multiple and connects by center-pole box cupling.
Compared to prior art, the utlity model has following beneficial effect:
Cover leaks large latus rectum expansion of metal bracing means and is made up of the following tool: hydraulic power parts, sprung parts, sealingThe instruments such as part and the parts of giving up form, and when construction, first utilize drilling rod or the whole tubing strings of relevant drive to add together in oil wellArrive precalculated position, direct flushing after instrument puts in place, suppress, piston driving center pull rod is done relative with piston outer cylinder sheathMotion, forces expansion tube bottom tapered expansion head to be pressed into, and makes swollen head produce radial dilatation within the utmost point short time, and the section of being squeezed expandsOpen and produce permanent plastic deformation, thereby be tightly anchored on internal surface of sleeve pipe, the material of the soft metal at expansion tube two ends sealing simultaneouslyExpect extrusion, sealed the annular space at expansion tube two ends, pull swollen head to move in light-wall pipe, reached coverPipe is repaired the object of subsidy. Subsidized follow-up high pressure of continuing rising, the piston of giving up is destroyed, and the swollen head of distinguish of bottom losesSupport, can inwardly shrink, upper lifting pipe post can trip out pit shaft inner tube, completes casing patching and reinforces.
1. adopt combination metal sealing expansion subsidy technology, subsidized rear sealing effectiveness good, wide adaptability, can reduceDownhole corrosion perforation equivalent risk; 2. utilize light-wall pipe subsidy, can realize the rear large latus rectum of shallow-layer sleeve pipe of subsidy, be convenient to otherSize instrument is lowered to, other process implementings; 3. this subsidy simple and reliable process, cost is low, can recover at short notice to produceCan, the economic benefit of repairing casing damaged well, raising oil field is had to important effect, there is good promotion prospect.
Brief description of the drawings
Fig. 1 is the structural representation that shallow-layer cover of the present utility model leaks large latus rectum expansion of metal bracing means;
Fig. 2 is the structure chart of expansion assembly.
In figure: anchoring device 1, hydraulic pusher 2, expansion assembly 3, tail pipe short circuit 4; Center-pole 3.1, adjustable ring3.2, thin-walled expansion tube 3.3, rubber seal tape 3.4, soft metal sealing ring 3.5, center-pole box cupling 3.6, expansion cone 3.7,Ball seat 3.8, tail pipe variable buckle 3.9.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides referenceWith the use of explanation, be not used for the utility model to be limited.
According to Fig. 1-2, shallow-layer cover leaks large latus rectum expansion of metal bracing means, comprises the grappling dress connecting successively from top to bottomPut 1, hydraulic pusher 2, expansion assembly 3, tail pipe short circuit 4. Described expansion assembly comprises that center-pole 3.1, thin-walled expandPipe 3.3, expansion cone 3.7, tail pipe variable buckle 3.9, described thin-walled expansion tube 3.3 empty sets are in center-pole 3.1 outsides, andForm each other annular space, the upper semisection of described thin-walled expansion tube and lower semisection are by middle Taper Pipe transition, swollen at thin-walledBetween expand tube lower semisection inwall and Taper Pipe inwall and center-pole outer wall, form the 3.3.1 of expansion tube operating room, in expansion tube workIndoor Taper Pipe transition position is installed expansion cone 3.7, described thin-walled expansion tube lower end union tail variable buckle 3.9. Described expansion tubeUpper end connects adjustable ring 3.2, and described center-pole top is connected with the center pull rod of hydraulic pusher, and bottom is connected with ball-and-seat,Ball-and-seat comprises the steel ball of installing on ball seat 3.8 and ball seat. Described expansion tube outer wall is provided with interval-staggered softMetallic packing ring 3.5, rubber seal tape 3.4. The pregroove marks that described soft metal sealing ring 3.5 is welded on expansion tube outer wallIn, rubber seal tape vulcanizes on steel frame band preset on expansion tube outer wall. Described center-pole arranges multiple and logicalCrossing center-pole box cupling connects. Anchoring device 1 is for location, down-hole, and hydraulic pusher 2 is for leading expansion cone motion.
Accompanying drawing 2, expansion assembly 3 is by center-pole 3.1, adjustable ring 3.2, thin-walled expansion tube 3.3, expansion cone 3.7, ballSeat 3.8 compositions, center-pole 3.1 can, according to actual conditions, extend by center-pole box cupling 3.6, on center-pole 3.1Portion is connected with the center pull rod of hydraulic pusher 2, and bottom is connected with ball seat 3.8; 3.2 tops and hydraulic pusher 2 outer shellsCover connects, and thin-walled expansion tube 3.3 inside are inserted in bottom; On expansion tube 3.3 outer walls, be combination metal sealing device, structureFor metallic packing ring 3.5, be welded in the pregroove marks on expansion tube 3.3 outer walls, rubber seal tape 3.4 vulcanizes presetSteel frame band, the many groups of composition hermetically-sealed construction together with the soft metal of front end sealing ring 3.5, metallic packing ring 3.5 and rubberThe quantity of glue band 3.4 can be determined by the concrete length of expansion tube; Thin-walled expansion tube 3.3 inner chamber bottoms and ball seat 3.8 itBetween have the 3.3.1 of expansion operating room, there is expansion cone 3.7 3.3.1 inside, expansion operating room, expansion cone 3.7 is enclosed within center-pole 4.1On. Described thin-walled expansion tube 3.3 is the expanding metal steel pipes with good plasticity, and the concrete material of metal is corrosion-resistantThe steel body that property is strong. After G.I.H, can expand into predetermined internal diameter and external diameter along diametric(al) by the method for machinery or hydraulic pressure.
When construction, first connect light-wall pipe bushing patch device with large drift diameter, utilize drilling rod or oil pipe to drive whole tubing strings oneRise and be lowered in oil well, down to casing damage position, then direct flushing is suppressed, anchoring device 1 and hydraulic pusher 2Start feed liquor, when after anchoring device 1 grappling, piston driving center-pole 3.1 and hydraulic pusher 2 in hydraulic pusher 2Outer cylinder sheath does relative motion, and forces the expansion cone 3.7 in expansion tube operating room to be pressed into, the expansion thin-walled after expansion cone 3.7Expansion tube ensures the sealing in expansion process, and within the utmost point short time, expansion tube 3.3 section of being squeezed expansions produce permanent mouldingProperty is out of shape, thereby is tightly anchored on internal surface of sleeve pipe, soft metal sealing ring 3.5 extrusions in expansion tube outside simultaneously,Sealed annular space, reached the object to sleeve pipe shutoff, the upper end of hydraulic pusher 2 is designed with pressure relief device, completeAfter becoming a stroke or expanding suspension to complete, play the effect of decompression protection.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, otherUse the equivalence of patent spirit of the present utility model to change, all should all belong to the scope of the claims of the present utility model.

Claims (6)

1. shallow-layer cover leaks large latus rectum expansion of metal bracing means, it is characterized in that, comprises the anchoring device, hydraulic pusher, expansion assembly, the tail pipe short circuit that connect successively from top to bottom.
2. shallow-layer cover according to claim 1 leaks large latus rectum expansion of metal bracing means, it is characterized in that, described expansion assembly comprises center-pole, thin-walled expansion tube, expansion cone, tail pipe variable buckle, described thin-walled expansion tube empty set is in center-pole outside, and form each other annular space, the upper semisection of described thin-walled expansion tube and lower semisection are by middle Taper Pipe transition, between thin-walled expansion tube lower semisection inwall and Taper Pipe inwall and center-pole outer wall, form expansion tube operating room, Taper Pipe transition position in expansion tube operating room is installed expansion cone, described thin-walled expansion tube lower end union tail variable buckle.
3. shallow-layer cover according to claim 2 leaks large latus rectum expansion of metal bracing means, it is characterized in that, described expansion tube upper end connects adjustable ring, described center-pole top is connected with the center pull rod of hydraulic pusher, bottom is connected with ball-and-seat, and ball-and-seat comprises the steel ball of installing on ball seat and ball seat.
4. shallow-layer cover according to claim 2 leaks large latus rectum expansion of metal bracing means, it is characterized in that, described expansion tube outer wall is provided with interval-staggered metallic packing ring, rubber seal tape.
5. shallow-layer cover according to claim 4 leaks large latus rectum expansion of metal bracing means, it is characterized in that, described metallic packing ring is welded in the pregroove marks on expansion tube outer wall, and rubber seal tape vulcanizes on steel frame band preset on expansion tube outer wall.
6. shallow-layer cover according to claim 2 leaks large latus rectum expansion of metal bracing means, it is characterized in that, described center-pole arranges multiple and connects by center-pole box cupling.
CN201521042401.XU 2015-12-14 2015-12-14 Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus Expired - Fee Related CN205243462U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521042401.XU CN205243462U (en) 2015-12-14 2015-12-14 Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521042401.XU CN205243462U (en) 2015-12-14 2015-12-14 Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus

Publications (1)

Publication Number Publication Date
CN205243462U true CN205243462U (en) 2016-05-18

Family

ID=55942542

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521042401.XU Expired - Fee Related CN205243462U (en) 2015-12-14 2015-12-14 Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus

Country Status (1)

Country Link
CN (1) CN205243462U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106761515A (en) * 2017-02-19 2017-05-31 胜利油田胜兴集团有限责任公司 A kind of superficial part set leakage external reinforcement repaiies set technique
CN109538149A (en) * 2018-11-01 2019-03-29 中国石油集团渤海钻探工程有限公司 A kind of easy unjaming thin-walled big orifice expandable casing patching device
CN113187431A (en) * 2020-01-14 2021-07-30 中国石油化工股份有限公司 Packer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106761515A (en) * 2017-02-19 2017-05-31 胜利油田胜兴集团有限责任公司 A kind of superficial part set leakage external reinforcement repaiies set technique
CN106761515B (en) * 2017-02-19 2021-06-29 胜利油田胜兴集团有限责任公司 Shallow sleeve leakage reinforcing and repairing process
CN109538149A (en) * 2018-11-01 2019-03-29 中国石油集团渤海钻探工程有限公司 A kind of easy unjaming thin-walled big orifice expandable casing patching device
CN109538149B (en) * 2018-11-01 2021-06-08 中国石油集团渤海钻探工程有限公司 Easy-to-release thin-wall large-drift-diameter expansion pipe patching device
CN113187431A (en) * 2020-01-14 2021-07-30 中国石油化工股份有限公司 Packer

Similar Documents

Publication Publication Date Title
CN101460699B (en) A method and apparatus for patching a well by hydroforming a tubular metal patch, and a patch for this purpose
CN102575512B (en) Expandable liner tieback connection
CN103774992B (en) The drive unit of bloat tool under cased well
CN205243462U (en) Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus
CN107816331A (en) Annular barrier
CN105443064A (en) Underground controllable self-expansion casing patching pipe
CN105484695A (en) Mechanical hydraulic double-acting expansion device suitable for expansion tube drilling
CN104153735A (en) Expansion pipe repairing device
CN201851057U (en) Casing-broken well repair tubular column
CN104563955B (en) Steel pipe hydraulic expansion type external casing packer
CN103089183A (en) Double bellmouth type expansion sleeve packing tool and operating method thereof
CN104334821B (en) Improve the sealed system and method for well tubular member
CN104563954A (en) Steel pipe expansion recovery type external casing packer
CN203808896U (en) Long-section casing damage well expansion pipe double-card casing pipe layered packing repairing device
CN103089185A (en) Operating device and method for constant-borehole-diameter expandable casing
CN201412099Y (en) Expansible sleeve assistance mechanism for safe expansion
CN108533200A (en) A kind of expansion tube is outstanding to insert fix tool and restorative procedure
CN205172513U (en) Bridging plug device based on expandable casing
CN205382907U (en) Two effect expansion devices of machinery hydraulic pressure suitable for expansion pipe well drilling
CN202300265U (en) Double-bellmouth type expandable casing packer tool
CN104563953A (en) Double-layer steel pipe expansion type pipe external casing packer
CN204252927U (en) A kind of cementing tool
CN204113166U (en) expansion hanger
CN106869845A (en) A kind of shallow-layer set leakage big orifice expansion of metal bracing means
CN206111121U (en) Subsidy technology tubular column in straight oblique well casing

Legal Events

Date Code Title Description
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: 20160518

Termination date: 20191214

CF01 Termination of patent right due to non-payment of annual fee