CN2635910Y - Oil well sleeve patching tool - Google Patents
Oil well sleeve patching tool Download PDFInfo
- Publication number
- CN2635910Y CN2635910Y CN 03214147 CN03214147U CN2635910Y CN 2635910 Y CN2635910 Y CN 2635910Y CN 03214147 CN03214147 CN 03214147 CN 03214147 U CN03214147 U CN 03214147U CN 2635910 Y CN2635910 Y CN 2635910Y
- Authority
- CN
- China
- Prior art keywords
- patch
- tool
- system body
- subsidy
- power system
- 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
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- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to a casing patch tool belonging to a downhole workover tool used in oilfields. Casings may damaged in oil wells during utilization, but the conventionally adopted corrugated pipe patch method has the shortcomings of low strength, short service life after patching, unsecured hanging of steel pipe patch and difficulties in sealing, so the patch effect is not ideal. By adopting a patch tool consisting of an upper piston, a lower piston, an upper power hydraulic system body, a lower power hydraulic system body, an impact cone, an impact header patch tube and sealing materials, this utility model can meet the downhole operation requirements in late stage. The hanging mode of this tool is simple and reliable, and is especially able to effectively solve the problem of patch tube pull-off due to thermal stress in thermal recovery wells. This tool is sealed reliably, and rubber and soft metal can be selected as the seal material according to oil well type. Since the diameter of the patch tube in this tool is large, the operation is simple, and the patch effects can be verified on the surface, the tool can be broadly used for casing patch in oil wells.
Description
Technical field:
The utility model relates to a kind of oil well casing reconditioning tool, belongs to down-hole, oil field workover tool class.
Background technology:
Oil well in use damages phenomenon owing to sleeve pipe can appear in multiple reason, and oil well is missed to underground work and made troubles, oil well casing damages back subsidy mode and mainly adopts three kinds of modes at present, the one, bellows subsidy, the 2nd, rigidity subsidy, the 3rd, the subsidy of rigidity pipe.Three keys of GPRS subsidy when subsidy: the one, the suspension of subsidy pipe, the 2nd, the sealing in subsidy pipe and sleeve ring vacancy, the 3rd, the intensity of subsidy, if suspension sealing and intensity have one not reach requirement during subsidy, promptly show the casing patching failure, bellows subsidy intensity is lower in above-mentioned three kinds of subsidy modes, life-span after the subsidy is short, and the steel pipe subsidy is hung not firm, and sealing is difficult, especially in petroleum thermal production well, come off through subsidizing pipe behind 2～3 infusion vapour, the subsidy pipe is basic to lose efficacy, and the blast subsidy is a kind of selectivity subsidy mode, but requires tighter to the down-hole, and in thermal production well, occur equally rigidity subsidy mode intrinsic defective.
The utility model content:
The purpose of this utility model is a kind of oil well casing reconditioning tool that provides in order to overcome above-mentioned shortcoming, latus rectum is big in this instrument subsidy pipe, can effectively solve subsidy pipe and sleeve pipe and subsidize pipe from the sleeve pipe problem that comes off because of the effect of thermal stress, also can be according to down-hole sealing load requirement, select for use the different sealing material to seal, also can determine arbitrarily according to the oil well type.
Implementation of the present utility model is such.
This reality is novel to be made up of by the oil pipe and the sheath repairing tool of screwed connection the oil pipe tool joint; Be connected with hydraulic power system body in the oil pipe lower end of described sheath repairing tool, a upper piston is arranged in the body of last hydraulic power system, the upper piston lower end connects one and transfers long tube, transfer long tube to be connected by this with pressure tube, in the pressure transmission lower end, ball seat is housed, the outer end is connected to pulling block, impact cone and expand tube head, be enclosed within respectively and be fixed on nut, above the lower piston, the radial impact head is installed in respectively, following hydraulic pressure, the inside of dynamical system body, described subsidy instrument, skin has the subsidy pipe and passes through a dowel fixes on last hydraulic power system body, in subsidy pipe outer end one prefabricated necking deformation section is arranged, and the coating encapsulant is housed above, in the seal cones lower end one ball seat is housed, there is ball at the ball seat seat of honour.
Described upward hydraulic power system body and following hydraulic power system body with transferring long tube that the two is connected as a single entity, have relief hole for mutually independently on described hydraulic power system body.
The utility model working method is: when pressure is sprained in the ground pitching, on, the piston of following two hydraulic power systems moves up and down respectively, make that impacting cone promotes radial impact head generation radial displacement, so subsidy pipe and sleeve pipe part under the effect of radial impact head just produce the distortion of " recessed " moulding property, thereby realized the suspension of subsidy pipe on sleeve pipe, on the subsidy pipe, there is a prefabricated necking deformation section at following two ends, the encapsulant of this section outside is last, piston in the hydraulic power system of following two ends is done, under when moving, expand tube above it makes the necking deformation section distending on the subsidy pipe, the dark encapsulant that applies in outside just is pressed against in the annular space of subsidy pipe and sleeve pipe, realize sealing, when pressure reduces, on carry the utility model and cut off the connection pin of subsidy on the pipe, propose the utility model in the well promptly to finish whole subsidy constructions.
The utility model compared with prior art has significant effect
Owing to adopted hydraulic power system body and seal cones and pulling block up and down in the utility model structure, the structure of subsidy pipe, latus rectum can satisfy later stage underground work and oil production technology requirement needs in its subsidy pipe, compare with existing subsidy instrument, hang is simple, firm, in thermal production well, can more effectively solve subsidy and sleeve pipe and make the subsides pipe from the sleeve pipe problem that comes off because of the thermal stress effect.
Description of drawings:
Figure is: the utility model structural representation
Among the figure: by 1, oil pipe (drilling rod) joint, 2-1, upper piston, 2-2, lower piston, 3-1, go up the hydraulic power system body, 3-2, hydraulic power system body down, 4-1, on impact cone, cone is hit in 4-2, bottom, the last radial impact head of 5-1,5-2, time radial impact head, 6-1, last expand tube head, 6-2, following expand tube head, 7, pressure tube, 8, subsidy pipe, 9, encapsulant, 10, seal cones, 11, ball, 12, ball seat, 13, pulling block, 14, connect pin, 15, transfer long tube, 16, pressure tube, 17, relief hole forms.
The specific embodiment:
The utility model is provided by following examples, below in conjunction with accompanying drawing the utility model is described further.
Among the figure, joint 1 upper end is that box connects oil pipe or drilling rod, and the lower end is pin thread and last hydraulic power system body 3-1; Near there being this upper piston bottom of a upper piston 2-1 and lower piston 2-2 to be connected with transferring long tube 15 and pressure tube 7 in the last hydraulic power system body with screw thread, ball seat 12 outer ends are housed in pressure tube 7 lower ends are connected to pulling block 13, in the circular groove of outside upper and lower hydraulic power system body 3-1,3-2 of pressure tube, upper and lower impact cone 5-1,5-2 are housed, be enclosed within respectively and be fixed on upper piston 2-1 at outside expand tube 6-1, the 6-2 of pressure tube 7, on the lower piston 2-2 with nut; And radially produce radial displacement forcing under the effect of hydraulic pressure to impact in cone 4-1, the 4-2 promotion with following radial impact head 5-1,5-2 with nut fixed piston 2-1,2-2, its end is extruded into the subsidy sleeve pipe of outside on the sleeve pipe, and make subsidy sleeve pipe and sleeve pipe produce local plastic deformation simultaneously, " recessed " shape groove occurs, realize the suspension of subsidy pipe on sleeve pipe;
Among the figure expand tube head 6-2 of the expand tube head 6-1 of piston 2-1 and piston 2-2 can move down respectively and on move, necking deformation section place in subsidy pipe top system produces expanded radially power, in the deformation section distending, again close material 9 (rubber or soft metal) is expressed in the annular space of sleeve pipe and subsidy pipe, realized sealing, at the outermost subsidy pipe 8 of subsidy instrument is round tube, be connected with last hydraulic power system 3-1 with pin 14, this subsidy pipe 8 is shaped on the necking deformation section in advance, and is coated with encapsulant 9 at this place.
Described going up on the hydraulic power system body 3-1 has relief hole 17, describedly goes up hydraulic power system body 3-1 and following hydraulic power system body 3-2 is separate workpiece, by extension pipe 15 the two connected as one.
Described ball 11 is when this device is lowered into predetermined subsidy position, after the turn on pump circulation is normal, under the termination of pumping situation, just drop into from ground, and definite ball 11 drops on the ball seat 12, and then the turn on pump circulation makes piston 2-1,2-2 forces and impacts cone 4-1,4-2 promotes radial impact head 5-1,5-2 produces radial displacement, its end is expressed to the subsidy pipe of outside on the sleeve pipe, make subsidy pipe and sleeve pipe groove occur, to subsidize pipe hanger on sleeve pipe, meanwhile, piston 2-1, expand tube head above the 2-2,6-1,6-2 moves and moves down on respectively, and the necking deformation section place prefabricated at the subsidy pipe produces expanded radially power, with the deformation section distending, again encapsulant 9 is expressed in sleeve pipe and the subsidy pipe ring shape space, realizes sealing, when above-mentioned action is finished, piston continues descending pump pressure in pipe and releases from relief hole 17, this moment just can on carry joint 1, cut off subsidy pipe connecting pin gas 14, the utility model is all taken out in the well finishes subsidy construction.
Claims (2)
1, a kind of oil well casing reconditioning tool is made up of by the oil pipe and the sheath repairing tool of screwed connection oil connection (1); It is characterized in that described sheath repairing tool, be to connect hydraulic power system body (3-1) in the oil pipe lower end, one upper piston (2-1) is arranged in last hydraulic power system body, the upper piston lower end links and transfers long tube (15), pressure tube (7) connects, ball seat (12) is housed in the pressure tube lower end, the outer end is connected to pulling block (13), impact cone (4-1), (4-2) with expand tube head (6-1), (6-2) be enclosed within upper piston (2-1) respectively, on the lower piston (2-2), and use bolt, radial impact head (5-1), (5-2) be installed in respectively, following hydraulic power system body (3-1), inside (3-2), described subsidy instrument skin has subsidy pipe (8), be fixed on above the hydraulic power system body (3-1) by connecting pin (14), on having a prefabricated necking deformation section, subsidy pipe (8) outer end is coated with encapsulant (9), in seal cones (10) lower end one ball seat (12) is arranged, there is ball (11) at the ball seat seat of honour.
2, a kind of oil well casing reconditioning tool according to claim 1, it is characterized in that hydraulic power system body (3-1) and following hydraulic power system body (3-2) are that separate workpiece also is connected as a single entity the two by accent long tube (15), have relief hole (17) on described hydraulic power system body (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214147 CN2635910Y (en) | 2003-08-05 | 2003-08-05 | Oil well sleeve patching tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214147 CN2635910Y (en) | 2003-08-05 | 2003-08-05 | Oil well sleeve patching tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2635910Y true CN2635910Y (en) | 2004-08-25 |
Family
ID=34289854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03214147 Expired - Fee Related CN2635910Y (en) | 2003-08-05 | 2003-08-05 | Oil well sleeve patching tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2635910Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777123A (en) * | 2012-05-02 | 2012-11-14 | 西南石油大学 | High-expansibility naked eye suspension adhering system and method |
| CN104295262A (en) * | 2014-08-12 | 2015-01-21 | 中国石油集团长城钻探工程有限公司 | Guide pipe well cementation releasing device |
| CN107869313A (en) * | 2016-09-26 | 2018-04-03 | 中国石油化工股份有限公司 | A kind of hollow rod elevated-temperature seal attachment means and connection method |
| CN111677480A (en) * | 2020-06-04 | 2020-09-18 | 大庆油田有限责任公司 | Double-acting control valve for casing patching |
-
2003
- 2003-08-05 CN CN 03214147 patent/CN2635910Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777123A (en) * | 2012-05-02 | 2012-11-14 | 西南石油大学 | High-expansibility naked eye suspension adhering system and method |
| CN102777123B (en) * | 2012-05-02 | 2014-04-02 | 西南石油大学 | High-expansibility naked eye suspension adhering system and method |
| CN104295262A (en) * | 2014-08-12 | 2015-01-21 | 中国石油集团长城钻探工程有限公司 | Guide pipe well cementation releasing device |
| CN107869313A (en) * | 2016-09-26 | 2018-04-03 | 中国石油化工股份有限公司 | A kind of hollow rod elevated-temperature seal attachment means and connection method |
| CN111677480A (en) * | 2020-06-04 | 2020-09-18 | 大庆油田有限责任公司 | Double-acting control valve for casing patching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |