CN201297146Y - Gate valve replacing tooling of well head device - Google Patents
Gate valve replacing tooling of well head device Download PDFInfo
- Publication number
- CN201297146Y CN201297146Y CNU2008202230915U CN200820223091U CN201297146Y CN 201297146 Y CN201297146 Y CN 201297146Y CN U2008202230915 U CNU2008202230915 U CN U2008202230915U CN 200820223091 U CN200820223091 U CN 200820223091U CN 201297146 Y CN201297146 Y CN 201297146Y
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- Prior art keywords
- fairlead
- seat
- ball
- guide sleeve
- oil
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Abstract
The utility model discloses a gate valve replacing tooling of well head device, including a check valve and handling tool of the check valve, handling tool, the tool comprises longitudinal slip assorted operating lever and guide sleeve, lower end of the operating lever is connected with the check valve, upper end of the operating lever has a wrench. The guide sleeve is divided into upper sleeve and lower sleeve and connected integrally by connection element; lower end of the lower guide sleeve has a flange, through which handling tool is fixed on paraffin valve of the well head device, radial clearance exists between operating lever and guide sleeve, a sealing ring is built-in the lower guide sleeve, clearance under the sealing ring constitutes bearing chamber of the lower guide sleeve, inner bore of the screw connection pipe communicates with the bearing chamber; two sealing rings are built-in the upper guide sleeve, clearance between the two sealing rings constitutes bearing chamber of the upper guide sleeve and the bearing chamber of upper and lower guide sleeve in connected by connection pipe. the utility model utilizes airflow pressure balance principle, replacing or maintaining the gate valve without injecting slurry to the well in no kick-killing situation.
Description
Technical field:
The utility model relates to the device that the gate valve of oil gas field wellhead assembly is changed or keeped in repair under the state of not kill-job, be the accessory of wellhead assembly, specifically is that a kind of wellhead assembly gate valve is changed frock.
Technical background:
The oil gas field wellhead assembly, it is the bearing device of control oil gas well well head pressure and flow, it mainly is made up of component such as gate valve, oil/tracheae hanger, four-way and choke valves, owing in long-term use, constantly be subjected to the influence of factors such as the burn into of high-pressure natural gas washes away, the inefficacy of gate valve is a common faults, the main valve on the wellhead assembly particularly, if break down, all can make whole well head be in no-console condition, cause the wasting of resources, contaminated environment, threaten well site and personal safety.
It mainly is to inject mud in well that valve is changed in traditional kill-job, makes mud column pressure be slightly larger than the OIH atmospheric pressure, waits to keep to change valve again after stable, tubing flow displacement then, resumes production.By the construction of this method should employ a tremendous amount of manpower, material resources, and after the kill-job since in the construction mud impurity stop up formation pore, often to reduce oil and gas production.This method exists investment big, and the maintenance interval is long and easily reduce drawback such as oil and gas production.
And the wellhead assembly of producing now all seldom designs the device that special-purpose replacing or maintenance gate valve are arranged, China's utility model patent " allowing pressurized maintenance well-head valve hydraulic pressure blanking plug " (application number: CN02245385.7), be under situation with pressure, well-head valve to be keeped in repair, dangerous than higher.
Summary of the invention:
The utility model purpose is to overcome the shortcoming of above-mentioned prior art, provides a kind of wellhead assembly gate valve to change frock.It utilizes the stream pressure equilibrium principle, changes under not kill-job situation or maintenance wellhead assembly gate valve.
The utility model is to adopt such technical scheme to realize:
A kind of wellhead assembly gate valve is changed frock, comprises
One ball-and-seat is used to be installed in the endoporus of the oil/tracheae hanger of wellhead assembly, blocking-up oil/gas circuit;
One ball-and-seat handling instrument is used for the ball-and-seat oil/tracheae hanger endoporus of packing into, and draws off ball-and-seat from oil/tracheae hanger endoporus;
Described oil/tracheae hanger endoporus has left-hand thread, and the outer wall of ball-and-seat has adaptive with it left-hand thread; The output channel inwall of described ball-and-seat is useful on the plus thread that connects handling instrument;
Described handling instrument comprises action bars and fairlead thereof, and action bars cooperates with the fairlead longitudinal sliding motion; The lower end of action bars is useful on the plus thread tube connector that connects ball-and-seat, and there is spanner the upper end of action bars; Described fairlead is divided into fairlead and following fairlead, and upper and lower fairlead is connected to integral body by connector; The lower end of following fairlead has flange, and handling instrument is fixed on the paraffin valve of wellhead assembly by this flange; Between action bars and the fairlead radial clearance is arranged, be provided with joint ring one in the following fairlead, the following gap of joint ring constitutes the pressure pocket of fairlead down, and the endoporus of screw nipple communicates with this pressure pocket; Be provided with the two seals ring in the last fairlead, the gap between the two seals ring constitutes the pressure pocket of going up fairlead, and the pressure pocket of upper and lower fairlead has communicating pipe to be communicated with, and communicating pipe is provided with pressure meter; The pressure pocket of upper and lower fairlead is respectively equipped with pressure-relief valve.
Described communicating pipe is provided with stop valve.
Described pressure meter has stop valve.
The utlity model has following advantage:
1. safety, environmental protection---utilize the stream pressure equilibrium principle, the ball-and-seat on replacing, the maintenance unit enters on the oil/tracheae hanger that designs in advance in well-head valve, and head valve is changed, keeped in repair to packing oil/endotracheal air-flow then under not kill-job situation.
2. time saving and energy saving---the main valve of effectively controlling on the wellhead assembly breaks down.
3. save the exploration cost---need not in well, inject mud, effectively raise oil and gas production.
Description of drawings:
Fig. 1 is a kind of structural representation of the utility model boll-weevil hanger.
Fig. 2 is a kind of structural representation of the utility model ball-and-seat.
Fig. 3 is a kind of structural representation of this practical handling instrument.
Code name implication among the figure: 1-oil/tracheae hanger; 2-ball-and-seat; 3,5-left-hand thread; 4-sealing unthreaded hole; 6-sealing ring; 7-plus thread; 8-action bars; 9-tube connector; 10-upward fairleads; 11-following fairlead; 12-connector; 13-flange; 14,15,16-joint ring; 17-pipeline stop valve; 18-pressure meter; 19-lower seal pressure-relief valve; 20-spool; 21-pressure meter stop valve; 22-spring; 23-communicating pipe; 24-on seal pressure-relief valve.
The specific embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3, the utility model comprises: the endoporus that is used for being installed in the oil/tracheae hanger 1 of wellhead assembly is blocked the ball-and-seat 2 of oil/gas circuit, with be used for ball-and-seat 2 oil/tracheae hanger 1 endoporus of packing into, and draw off the ball-and-seat handling instrument of ball-and-seat 2 from oil/tracheae hanger 1 endoporus, oil/tracheae hanger 1 endoporus has left-hand thread 3 and sealing unthreaded hole 4, with this as stopping up point.The outer wall of ball-and-seat 2 has adaptive with it left-hand thread 5 and sealing ring 6, and the output channel inwall of ball-and-seat 2 is useful on the plus thread 7 that connects handling instrument.Handling instrument comprises action bars 8 and fairlead thereof, action bars 8 cooperates with the fairlead longitudinal sliding motion, the lower end of action bars 8 is useful on the plus thread tube connector 9 that connects ball-and-seat 2, there is spanner the upper end of action bars 8, fairlead is divided into fairlead 10 and following fairlead 11, and upper and lower fairlead is connected to integral body by connector 12; The lower end of following fairlead 11 has flange 13, handling instrument is fixed on the paraffin valve of wellhead assembly by this flange 13, between action bars 8 and the fairlead radial clearance is arranged, be provided with one joint ring 14 in the following fairlead 11, the gap of joint ring below 14 constitutes the pressure pocket of fairlead 11 down, the endoporus of screw nipple 9 communicates with this pressure pocket, be provided with two seals ring 15 in the last fairlead 10,16, two seals ring 15, gap between 16 constitutes the pressure pocket of going up fairlead 10, on, the pressure pocket of following fairlead has communicating pipe 23 to be communicated with, be provided with pipeline stop valve 17 and the pressure meter 18 that has stop valve communicating pipe 23, on, the pressure pocket of following fairlead is respectively equipped with sealing pressure-relief valve 24 and lower seal pressure-relief valve 19.
The utility model is performed such replacing or maintenance wellhead assembly gate valve:
At first ball-and-seat 2 is connected on the tube connector 9 of action bars 8 lower ends, and the spool in the ball-and-seat 2 20 is opened, and remove tightly with pipe wrench by tube connector 9.Again the paraffin valve port of export flange on flange on the handling instrument 13 and the wellhead assembly is passed through bolt, gasket ring connects and is fixing, close going up on the handling instrument and seal pressure-relief valve 24 and lower seal pressure-relief valve 19, open pressure meter stop valve 21, slowly open pipeline stop valve 17, observe the force value on the pressure meter 18, when pressure identical with the wellhead assembly oil pressure value, the pressure balance of going up sealing pressure-relief valve 24 and lower seal pressure-relief valve 19 of handling instrument is described, use special spanner to move action bars 8, can move down easily smoothly, and ball-and-seat 2 is sent to installation site in oil/tracheae hanger 1 through wellhead assembly master latus rectums, because of the external screw thread and the oil/tracheae hanger 1 of ball-and-seat 2 is left-hand threads, therefore when arriving the installation site, with special spanner inhour rotary manipulation bar 8, ball-and-seat 2 and oil/tracheae hanger 1 are correctly fastened, when ball-and-seat 2 is in place, ball-and-seat 2 excircle sealing rings 6 cooperate with sealing unthreaded hole 4 on oil/tracheae hanger 1 and realize sealing, continue counter-clockwise lightly rotary manipulation bar 8, because of tube connector 9 is connected with ball-and-seat 2 internal threads is plus thread, therefore, tube connector 9 withdraws from ball-and-seat 2 at leisure, and the spool 20 of ball-and-seat 2 makes ball-and-seat 2 close under the effect of spring 22.At this moment closing presure table stop valve 21 is opened lower seal pressure-relief valve 19, observes pressure meter 18, when force value is zero, ball-and-seat 2 good seal is described, continue counter-clockwise rotary manipulation bar 8, tube connector 9 just can withdraw from ball-and-seat 2, and sealing pressure-relief valve 24 just can be pulled down handling instrument in the unlatching.At this moment can under situation not with pressure, change or keep in repair the wellhead assembly main valve.After total valve replacement of wellhead assembly or the maintenance completion, reinstall handling instrument, close each stop valve (pipeline stop valve 17 and pressure meter stop valve 21), with special spanner action bars 8 is sent to ball-and-seat 2 installation sites in the oil/tracheae hanger 1, moves action bars 8 clockwise and can take out ball-and-seat 2.
The utility model utilizes the stream pressure equilibrium principle, the ball-and-seat of changing on the frock 2 enters on the oil/tracheae hanger 1 that designs in advance in well-head valve, packing oil/endotracheal air-flow, under not kill-job situation, change, keep in repair head valve then, safety, environmental protection, the main valve of effectively controlling on the wellhead assembly breaks down, time saving and energy saving, need not in well, inject mud, effectively raise oil and gas production, save the exploration cost.
Claims (3)
1. a wellhead assembly gate valve is changed frock, comprising:
One ball-and-seat is used to be installed in the endoporus of the oil/tracheae hanger of wellhead assembly, blocking-up oil/gas circuit;
One ball-and-seat handling instrument is used for the ball-and-seat oil/tracheae hanger endoporus of packing into, and draws off ball-and-seat from oil/tracheae hanger endoporus;
It is characterized in that:
Described oil/tracheae hanger endoporus has left-hand thread, and the outer wall of ball-and-seat has adaptive with it left-hand thread; The output channel inwall of described ball-and-seat is useful on the plus thread that connects handling instrument;
Described handling instrument comprises action bars and fairlead thereof, and action bars cooperates with the fairlead longitudinal sliding motion; The lower end of action bars is useful on the plus thread tube connector that connects ball-and-seat, and there is spanner the upper end of action bars; Described fairlead is divided into fairlead and following fairlead, and upper and lower fairlead is connected to integral body by connector; The lower end of following fairlead has flange, and handling instrument is fixed on the paraffin valve of wellhead assembly by this flange; Between action bars and the fairlead radial clearance is arranged, be provided with joint ring one in the following fairlead, the following gap of joint ring constitutes the pressure pocket of fairlead down, and the endoporus of screw nipple communicates with this pressure pocket; Be provided with the two seals ring in the last fairlead, the gap between the two seals ring constitutes the pressure pocket of going up fairlead, and the pressure pocket of upper and lower fairlead has communicating pipe to be communicated with, and communicating pipe is provided with pressure meter; The pressure pocket of upper and lower fairlead is respectively equipped with pressure-relief valve.
2. wellhead assembly gate valve according to claim 1 is changed frock, and it is characterized in that: described communicating pipe is provided with stop valve.
3. wellhead assembly gate valve according to claim 1 is changed frock, and it is characterized in that: described pressure meter has stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202230915U CN201297146Y (en) | 2008-12-03 | 2008-12-03 | Gate valve replacing tooling of well head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202230915U CN201297146Y (en) | 2008-12-03 | 2008-12-03 | Gate valve replacing tooling of well head device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297146Y true CN201297146Y (en) | 2009-08-26 |
Family
ID=41043125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202230915U Expired - Lifetime CN201297146Y (en) | 2008-12-03 | 2008-12-03 | Gate valve replacing tooling of well head device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297146Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128530A (en) * | 2013-03-05 | 2013-06-05 | 南京晨灿机械制造有限公司 | Tool for replacing No.1 main valve of oil gas well mouth device in snubbing well under pressure |
| CN107762434A (en) * | 2017-09-27 | 2018-03-06 | 苏州优力克流体控制科技有限公司 | One kind is changed valve and blocked up |
| CN109372471A (en) * | 2018-11-29 | 2019-02-22 | 美钻深海能源科技研发（上海）有限公司 | A kind of wellheadpressure valve switch failure maintenance of equipment and its method |
| CN112483029A (en) * | 2020-12-08 | 2021-03-12 | 重庆前卫科技集团有限公司 | Underwater throttle valve lifting, installing and recycling device |
-
2008
- 2008-12-03 CN CNU2008202230915U patent/CN201297146Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128530A (en) * | 2013-03-05 | 2013-06-05 | 南京晨灿机械制造有限公司 | Tool for replacing No.1 main valve of oil gas well mouth device in snubbing well under pressure |
| CN107762434A (en) * | 2017-09-27 | 2018-03-06 | 苏州优力克流体控制科技有限公司 | One kind is changed valve and blocked up |
| CN109372471A (en) * | 2018-11-29 | 2019-02-22 | 美钻深海能源科技研发（上海）有限公司 | A kind of wellheadpressure valve switch failure maintenance of equipment and its method |
| CN109372471B (en) * | 2018-11-29 | 2023-09-26 | 美钻深海能源科技研发（上海）有限公司 | Wellhead pressurized valve switch failure maintenance equipment and method thereof |
| CN112483029A (en) * | 2020-12-08 | 2021-03-12 | 重庆前卫科技集团有限公司 | Underwater throttle valve lifting, installing and recycling device |
| CN112483029B (en) * | 2020-12-08 | 2022-04-22 | 重庆前卫科技集团有限公司 | Underwater throttle valve lifting, installing and recycling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090826 |
|
| CX01 | Expiry of patent term |