CN2118147U - Oil pipe hanging apparatus for borehole of operated well - Google Patents
Oil pipe hanging apparatus for borehole of operated well Download PDFInfo
- Publication number
- CN2118147U CN2118147U CN 91206252 CN91206252U CN2118147U CN 2118147 U CN2118147 U CN 2118147U CN 91206252 CN91206252 CN 91206252 CN 91206252 U CN91206252 U CN 91206252U CN 2118147 U CN2118147 U CN 2118147U
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- oil pipe
- pipe suspension
- tapering
- suspension joint
- cone
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Abstract
The utility model belongs to an oil pipe hanging apparatus for a no-killing well on the oil field. According to sizes of outer diameters of underground oil pipes and accessories, the utility model divides into tow types. One type is formed by that an oil pipe hanging joint is installed in a housing by a rubber core and a gland. The other type is formed by that the oil pipe hanging joint is installed in a seat hoop, and an O-shaped sealing ring is arranged between the oil pipe hanging joint and the seat hoop. When the oil pipe hanging apparatus of the first type is used for matching with a specially designed oil pipe valve, an oil inlet joint and a bottom plug, the no-killing well can realize the direct operation of rising the oil pipe under the condition that the pressure exists in the well. When the oil pipe hanging apparatus of the second type is used, a self well-sealing device can be additionally installed on the borehole, and then, the oil pipe hanging apparatus of the second type is matched with the oil pipe valve, the oil inlet joint and the bottom plug, which can also realize the operation of the no-killing well.
Description
The utility model belongs to oil well when carrying out snubbing serving, hangs the device of oil pipe in wellhead equipment.At present, the oil pipe suspension arrangement that production wellhead uses is made of boll-weevil hanger and sealing ring, the boll-weevil hanger outside is made of two parts cone up and down, on the lower cone surface, have O-ring seals groove and soft metal joint ring, the center is a through hole, two ends have the oil pipe box, and boll-weevil hanger hangs tubing string and seat is bored in the seat at the well head four-way, is fixed on the conical surface of upper cone by the jackscrew roof pressure in the four-way flange.Use this boll-weevil hanger, when on examining workover treatments such as pump, playing tubing string, it need be proposed well head.At this moment, if pressure is arranged, just need working power equipment in the well, in well, pump into the kill-job liquid kill-job of some, just can carry out normal running then.Like this, not only need to consume a large amount of human and material resources but also will prolong the activity duration, the oil well that has often causes formation damage later in kill-job, after the operation, needs just can return to normal production for a long time.Change this situation, must adopt the operational method of not kill-job, make under its situation that pressure can be arranged in well and remove tubing string.When snubbing serving is carried out at the scene at present, need on well head, install full envelope additional and partly seal ancillary services such as dual-purpose blowout preventer, blowout prevention short tube, self-sealing blowout preventer.These devices make the height of well head, increase more than the 1.0-1.5 rice, and the well workover workman has at the enterprising line operate of scaoffold, and is not only dangerous but also inconvenient.
The utility model is to provide a kind of simple in structure, easy to use for carrying out snubbing serving, can separate the problem that never kill-job plays lower tubular column effectively, prevents formation damage thereby reach the minimizing operation sequence, prevents the purpose of gas blowout accident.
Technical solution of the present utility model is to realize like this.
1. Unkilling well tubing suspension arrangement of forming by sealing ring and oil pipe suspension joint, oil pipe suspension joint two ends have tubing thread, its special character is: (1). the oil pipe suspension joint is installed in rubber fuse and the gland, the O-ring seals sealing is arranged between oil pipe suspension joint and the gland, and oil pipe suspension joint outside is made of step; (2). the rubber fuse is installed in the enclosure, is pushed down by gland; (3). housing exterior is a cone, and its tapering is identical with the tapering of well head four-way awl seat, has O-ring seals groove and soft metal joint ring on cone, and its inner lower end is a step; (4). the center of gland is one to have the through hole of step, and its outer upper ends is a cone, and the tapering of jackscrew end adapts on tapering and the wellhead flange; (5) .O shape sealing ring and soft metal joint ring are installed in the seal groove of case surface.
2. Unkilling well tubing suspension arrangement of forming by sealing ring and oil pipe suspension joint, oil pipe suspension joint two ends have tubing thread, and its special character is: (1). and the oil pipe suspension joint is installed in the present hoop, and O-ring seals is installed between them; (2). oil pipe suspension joint outside has seal groove and step; (3). the seat hoop is outside to be made of two parts cone, and the tapering of the tapering of its top cone and well head jackscrew front end adapts, and the tapering of bottom cone and well head four-way inner cone seat adapt, and have the O-ring seals groove on the cone of bottom, has step in the seat hoop.
Be connected into one at the gland described in above-mentioned first kind of technical scheme by screw thread and shell, have the hole of diameter 6--25 millimeter on gland and the shell, oil pipe suspension joint step outside and that gland matches is a taper seat.
At the oil pipe suspension joint described in above-mentioned second kind of technical scheme, the step that top bar and the seat of its outside binds round inside is the conical surface of identical tapering, and the lower surface of seat hoop is a conical surface.
The utility model has the advantages that simple in structurely, easy to use, when carrying out snubbing serving, first kind of scheme need not increase any miscellaneous equipment; Second kind of scheme only need cooperate one from blowout preventer, and the operation that removes tubing string under the situation of pressure can be arranged in well.Can reduce operation procedure, save the needed human and material resources of kill-job, accomplish safety in production.
Fig. 1 is the structural representation of first kind of scheme of the utility model.
Fig. 2 is the structural representation of second kind of scheme of the utility model.
Fig. 3 is the scheme of installation of first kind of described Unkilling well tubing suspension arrangement of technical scheme tubing string in well head and well.
Fig. 4 is the scheme of installation of second kind of described Unkilling well tubing suspension arrangement of technical scheme tubing string in well head and well.
Embodiment:
1. when its external diameter of all parts (as oil well pump, oil pipe valve, fuel inlet fitting etc.) that down-hole string connected during, adopt first kind of oil pipe suspension arrangement in the technical program less than 95 millimeters.The rubber fuse 3(of oil pipe suspension arrangement is made with oil resistant rubber) be installed in shell 2 and the gland 1, O-ring seals 4 is installed between shell 2 and the gland 1, shell 2 and gland 1 are in the same place by screwed connection, in the hole 7 on crowfoot insertion shell 2 and the gland 1, screw thread is tightened, be sleeved on the stifled tail pipe 23 more than 24 in the end, tail pipe 23 is hung in pit shaft by lifting appliance (not drawing among the figure), shell 2 is placed in the well head four-way awl seat 17, fixing with jackscrew 16.Successively fuel inlet fitting 22, tubing nipple 21, oil pipe valve 20, oil well pump 19 and oil pipe 18 are connected by screw thread then and be lowered in the pit shaft.The lower end that will install the oil pipe suspension joint 6 of O-ring seals 8 at last is connected on the oil pipe 18, with lifting sub 15 oil pipe suspension joint 6 is placed in the gland 1, adorns production tree then, and lower sucker rod 25 and piston 26 completions are gone into operation.The endoporus of rubber fuse 3 is tightly embraced the outside of oil pipe suspension joint 6, plays sealing function.Rely on O-ring seals and soft metal ring sealing between well head four-way awl seat 17 and the shell 2.
When carrying out not kill-job and pick up the pump operation, can be at sleeve pipe outlet dress constant pressure valve 14, well head annular space overbottom pressure is controlled in the scope that glue core 3 can bear, trip out after utilizing sucker rod 25 to close oil pipe valve 20, by lifting sub 15 oil pipe suspension joint 6 is proposed to take off, then successively with oil pipe 18 in the mode that presses down or rotate, oil well pump 19, oil pipe valve 20, oil pipe short circuit 21, fuel inlet fitting 22 grades trip out pit shaft.When taking out with upper-part, rubber fuse 3 seals always.At last got lodged in the lower end of rubber fuse 3 end of tail pipe 23 lower ends stifled 24, prevent liquid ejection in the well, treat that pump cleans to check and go into operation next time successively again after finishing.
2. when the external diameter of institute's coupling components on the down-hole string (as oil well pump, oil pipe valve, fuel inlet fitting etc.) during, then adopt second kind of oil pipe suspension arrangement described in the technical program greater than 95 millimeters.During following pump the end stifled 40, be linked together with tail pipe 39, O-ring seals 13 is installed in the seal groove of present hoop 9, seat hoop 9 is enclosed within on the tail pipe 39, by lifting appliance (not drawing among the figure), tail pipe 39 is hung in the pit shaft, seat hoop 9 is placed in the well head four-way awl seat 31 interior jackscrews 26 of using fixes, then successively with fuel inlet fitting 38, short circuit 37, oil pipe valve 36, oil well pump 35, oil pipe 34 waits by the screw thread connection to be lowered in the pit shaft, the lower end that will install the oil pipe suspension joint 11 of O-ring seals 10 at last is connected on the oil pipe 34, with lifting sub 27 it is laid in the present hoop 9, adorn production tree then, lower sucker rod 33 and piston 32 are gone into operation.
When carrying out not kill-job pump detection and workover, utilize sucker rod 33 to close oil pipe valve 36 in the mode that presses down or rotate, trip out sucker rod 33, on four-way junction of casing flange 31, install a self-sealing blowout preventer 30 additional, utilize constant pressure valve 28 that the annular space overbottom pressure is controlled to the scope that the glue core 29 of self-sealing blowout preventer 30 can bear, by promoting short circuit 27, the rubber fuse 29 of oil pipe suspension joint 11 by self-sealing blowout preventer 30 proposed to take off.Successively proposition pit shafts such as oil pipe 34, oil well pump 35, oil pipe valve 36, oil pipe short circuit 37, fuel inlet fitting 38 are unloaded then.When taking out above each parts, the rubber fuse 29 by self-sealing blowout preventer 30 seals always.The end stifled 40 with tail pipe 39 lower ends gets lodged on the conical surface that binds round 9 lower ends at last, prevents liquid ejection in the well, treats to go into operation in the well next time successively after pump cleans the inspection end.
Claims (4)
1, a kind of Unkilling well tubing suspension arrangement of forming by sealing ring and oil pipe suspension joint, the two ends of oil pipe suspension joint have tubing thread, it is characterized in that:
(1) the oil pipe suspension joint is installed in the gland of rubber fuse and shell, and with the O-ring seals sealing, oil pipe suspension joint outside is made of step between oil pipe suspension joint and the gland;
(2) the rubber fuse is installed in the enclosure, is pushed down by gland;
(3) housing exterior is a cone, and its tapering is identical with the tapering of well head four-way inner cone seat, has seal groove on cone, and its inner lower end is a step;
(4) be one to have the through hole of step at the gland center, its outer upper ends is a cone, and the tapering of its tapering and wellhead flange jackscrew front end adapts;
(5) O-ring seals and soft metal are encircled in the seal groove that is installed on the case surface.
2, a kind of Unkilling well tubing suspension arrangement of forming by sealing ring and oil pipe suspension joint, oil pipe suspension joint two ends have tubing thread, it is characterized in that:
(1) the oil pipe suspension joint is installed in the hoop of being present, and seals with the O RunddichtringO between oil pipe suspension joint and the seat hoop;
(2) oil pipe suspension joint outside has seal groove and step;
(3) the seat hoop is outside is made of two parts cone, and the tapering of its top cone and well head jackscrew front end tapering adapt, and the tapering of the tapering of bottom cone and well head four-way inner cone seat adapts, and has seal groove on the cone of bottom, and seat hoop inside has step.
3, oil pipe suspension arrangement according to claim 1 is characterized in that:
(1) gland is installed together by screw thread and shell;
(2) has the hole of diameter 6-25 millimeter on gland and the shell;
(3) oil pipe suspension joint step outside and that gland matches is a taper seat.
4, oil pipe suspension arrangement according to claim 2 is characterized in that:
(1) oil pipe suspension joint outside to top bar with the inner step of seat hoop be the conical surface of identical tapering;
(2) lower surface of seat hoop is a conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91206252 CN2118147U (en) | 1991-04-12 | 1991-04-12 | Oil pipe hanging apparatus for borehole of operated well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91206252 CN2118147U (en) | 1991-04-12 | 1991-04-12 | Oil pipe hanging apparatus for borehole of operated well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2118147U true CN2118147U (en) | 1992-10-07 |
Family
ID=4915953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91206252 Granted CN2118147U (en) | 1991-04-12 | 1991-04-12 | Oil pipe hanging apparatus for borehole of operated well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2118147U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141486A (en) * | 2013-05-07 | 2014-11-12 | 中国石油化工股份有限公司 | Device and method for quick pump detection by utilizing coiled tubing for dragging electric pump during oil production |
| CN107489391A (en) * | 2017-09-13 | 2017-12-19 | 李淑华 | A kind of sucker rod self-seal device |
-
1991
- 1991-04-12 CN CN 91206252 patent/CN2118147U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141486A (en) * | 2013-05-07 | 2014-11-12 | 中国石油化工股份有限公司 | Device and method for quick pump detection by utilizing coiled tubing for dragging electric pump during oil production |
| CN107489391A (en) * | 2017-09-13 | 2017-12-19 | 李淑华 | A kind of sucker rod self-seal device |
| CN107489391B (en) * | 2017-09-13 | 2024-01-02 | 李淑华 | Sucker rod self-sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |