CN104879079B - Production wellhead gate valve replacing device operated under pressure and gate valve replacing options with pressure - Google Patents
Production wellhead gate valve replacing device operated under pressure and gate valve replacing options with pressure Download PDFInfo
- Publication number
- CN104879079B CN104879079B CN201510306665.XA CN201510306665A CN104879079B CN 104879079 B CN104879079 B CN 104879079B CN 201510306665 A CN201510306665 A CN 201510306665A CN 104879079 B CN104879079 B CN 104879079B
- Authority
- CN
- China
- Prior art keywords
- gate valve
- pressure
- screw shaft
- outer tube
- hydraulic cylinder
- 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
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention relates to a kind of production wellhead gate valve replacing device operated under pressure and gate valve replacing options with pressure, device includes lead screw shaft, slip assemblies, hydraulic cylinder, sealing shroud, outer tube, feed screw nut, stop valve and hydraulic joint, wherein in the anterior optical axis section of lead screw shaft, hydraulic cylinder rear portion is sealed by sealing shroud for slip assemblies and hydraulic cylinder；Lead screw shaft rear portion leading screw section is set with outer tube by feed screw nut, is fixed by locking nut, has the shape being adapted with clamp connection on the inside of outer tube；Elongated hydraulic pressure oilhole is provided with the middle part of lead screw shaft, passes through the external pressuring pump of stop valve and hydraulic joint for being fixed on leading screw shaft rear end；Hydraulic pressure oilhole is provided with radial direction fuel feed hole connection hydraulic cylinder.Its method is that the purpose of replacing gate valve with pressure is realized by blocking the pressure oil circuit from well head.Apparatus of the present invention are simple in construction, and manufacturing cost is low, simple to operate, can save a large amount of manpower and materials, improve maintenance and change efficiency, and do not influence normal oil producing operation.
Description
Technical field
Repaired the present invention relates to oil field equipment and change technical field, more particularly to a kind of production wellhead gate valve is with pressure more changes the outfit
Put and gate valve replacing options with pressure.
Background technology
Production wellhead is the important device in oil field equipment, and gate valve is the critical piece of production wellhead, works as gate valve
Need to be changed during failure, but the pressure release that must be stopped production during routine maintenance replacing gate valve；Oil extraction operation can be influenceed during stopping production to enter
Degree, pressure release can will have been injected into a large amount of chemical agents and water of underground blowback tank car again, will largely change again after more finishing changing gate valve
Learn under medicament and water injection well, can so increase many workloads, waste time and energy.
The content of the invention
The invention provides a kind of production wellhead gate valve replacing device operated under pressure, only needs an additional hydraulic pressure pressuring pump, so that it may
Replacing gate valve operation with pressure is realized, apparatus structure is simple, and manufacturing cost is low, simple to operate, can save a large amount of manpower and materials, improves
Efficiency is changed in maintenance, and does not influence normal oil producing operation；Invention also provides the replacing with pressure of the gate valve based on the device
Method.
In order to achieve the above object, the present invention is realized using following technical scheme：
Production wellhead gate valve replacing device operated under pressure, including lead screw shaft, slip assemblies, hydraulic cylinder, sealing shroud, outer tube, silk
Thick stick nut, stop valve and hydraulic joint, wherein slip assemblies and hydraulic cylinder are in the anterior optical axis section of lead screw shaft, hydraulic cylinder
Rear portion is sealed by sealing shroud；Lead screw shaft rear portion leading screw section is set with outer tube by feed screw nut, is fixed by locking nut, outside
There is the shape being adapted with clamp connection on the inside of sleeve pipe；Elongated hydraulic pressure oilhole is provided with the middle part of lead screw shaft, by being fixed on silk
The external pressuring pump of stop valve and hydraulic joint of thick stick shaft rear end；Hydraulic pressure oilhole is provided with radial direction fuel feed hole connection hydraulic cylinder.
The slip assemblies are made up of slips overcoat, compression spring and slips, and along the circumferential direction uniform number is put outside slips
Individual slips, slips outer surface have tooth-shape structure, compression spring are set between slips and slips overcoat.
The hydraulic cylinder front end and lead screw shaft front end have the pyramidal structure being adapted with slips inner surface.
The lead screw shaft upper leading screw segment length is more than the overall length of outer tube and gate valve, and sealing can be accommodated by having on the inside of outer tube
The toroidal cavity of set, hydraulic cylinder and slip assemblies.
The outer tube is fixed with feed screw nut end face by several uniform holding screws.
The stop valve is angular needle-valve, and its maximum appearance and size is less than overcoat bore.
Gate valve replacing options with pressure based on production wellhead gate valve replacing device operated under pressure, comprise the following steps：
1) all parts are installed to composition gate valve replacing device operated under pressure, outer tube in lead screw shaft and pass through feed screw nut precession
Anterior to lead screw shaft, now sealing shroud, hydraulic cylinder and slip assemblies enter in the toroidal cavity of outer tube, will be logical on the inside of outer tube
Clip is crossed to be fixedly connected with gate valve side；
2) gate valve is opened, the leading screw shaft head for making to be provided with slip assemblies and hydraulic cylinder by rotating threaded shaft axle passes through gate valve
Into in the four-way junction of casing being connected with gate valve opposite side；
3) lead screw shaft is provided with hydraulic joint side and connects pressuring pump by hydraulic joint, suppresses 20~25MPa, hydraulic oil
Enter hydraulic cylinder by hydraulic pressure oilhole and through radial direction fuel feed hole, hydraulic cylinder moves along leading screw axial direction slips side, promote slips to
Outer opening, and be anchored on four-way junction of casing tube wall；
4) voltage stabilizing 10~15 minutes, stop valve is closed, removes pressuring pump, unclamped holding screw, unloaded successively from lead screw shaft
Lower outer tube and clip, change gate valve；
5) after the completion of replacing gate valve, clip, outer tube and holding screw are reinstalled, slips exists after opening stop valve pressure release
Original position is returned under compression spring effect；Rotating threaded shaft axle makes leading screw shaft head return in outer tube, closing gate valve, removes gate valve band
More changing device and clip are pressed, whole replacing gate valve process with pressure terminates.
Compared with prior art, the beneficial effects of the invention are as follows：
Using device of the present invention, an additional hydraulic pressure pressuring pump is only needed, so that it may realize replacing gate valve operation with pressure, dress
Put simple in construction, manufacturing cost is low, simple to operate, can save a large amount of manpower and materials, improves maintenance and changes efficiency, and does not influence
Normal oil producing operation.
Brief description of the drawings
Fig. 1 is the structural representation of device of the present invention.
Fig. 2 is the working state schematic representation one of device of the present invention.
Fig. 3 is the working state schematic representation two of device of the present invention.
Fig. 4 is the working state schematic representation three of device of the present invention.
Fig. 5 is the working state schematic representation four of device of the present invention.
Fig. 6 a- Fig. 6 c are the three-view diagrams of slips of the present invention.
Fig. 7 is the main view profile of slips overcoat of the present invention.
In figure：1. block the lead screw shaft of 2. slip assemblies, 21. slips, 22. slips overcoat, 3. hydraulic cylinder, 4. sealing shroud 5.
6. the hanger 13. of 11. hydraulic joint of outer tube 7. feed screw nut, 8. holding screw, 9. locking nut, 10. stop valve 12.
The clip I. gate valve replacing device operated under pressure of 14. gate valve of four-way junction of casing 15.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
See Fig. 1, be the structural representation of device of the present invention, production wellhead gate valve of the present invention is with pressure more to change the outfit
Put, including lead screw shaft 5, slip assemblies 2, hydraulic cylinder 3, sealing shroud 4, outer tube 6, feed screw nut 7, stop valve 10 and hydraulic joint
11, wherein slip assemblies 2 and hydraulic cylinder 3 are sleeved in the anterior optical axis section of lead screw shaft 5, and the rear portion of hydraulic cylinder 3 is close by sealing shroud 4
Envelope；The rear portion leading screw section of lead screw shaft 5 is set with outer tube 6 by feed screw nut 7, is fixed by locking nut 9, and the inner side of outer tube 6 has
Have and adaptable shape is connected with clip 15；The middle part of lead screw shaft 5 is provided with elongated hydraulic pressure oilhole, after being fixed on lead screw shaft 5
The 11 external pressuring pump of stop valve 10 and hydraulic joint at end；Hydraulic pressure oilhole is provided with radial direction fuel feed hole connection hydraulic cylinder 3.
The slip assemblies 2 are by slips overcoat 22 (as shown in Figure 7), compression spring and slips 21 (as shown in fig. 6a-6c)
Form, along the circumferential direction uniform several slips 21, the outer surface of slips 21 have tooth-shape structure, slips 21 and card on slips overcoat 22
Compression spring is set between watt overcoat 22.
The front end of hydraulic cylinder 3 and the front end of lead screw shaft 5 have the pyramidal structure being adapted with the inner surface of slips 21.
The upper leading screw segment length of lead screw shaft 5 is more than the overall length of outer tube 6 and gate valve 14, and the inner side of outer tube 6 has and can held
Receive the toroidal cavity of sealing shroud 4, hydraulic cylinder 3 and slip assemblies 2.
The outer tube 6 is fixed with the end face of feed screw nut 7 by several uniform holding screws 8.
The stop valve 10 is angular needle-valve, and its maximum appearance and size is less than the internal diameter of outer tube 6.
Gate valve replacing options with pressure based on production wellhead gate valve replacing device operated under pressure, comprise the following steps：
1) all parts are installed to composition gate valve replacing device operated under pressure I, outer tube 6 in lead screw shaft 5 and pass through feed screw nut 7
The front portion of lead screw shaft 5 is screw into, now sealing shroud 4, hydraulic cylinder 3 and slip assemblies 2 enter in the toroidal cavity of outer tube 6, will be outer
The inner side of sleeve pipe 6 is fixedly connected by clip 15 with the side of gate valve 14；(as shown in Figure 2)
2) gate valve 14 is opened, the head of lead screw shaft 5 for making to be provided with slip assemblies 2 and hydraulic cylinder 3 by rotating threaded shaft axle 5 leads to
Gate valve 14 is crossed to enter in the four-way junction of casing 13 being connected with the opposite side of gate valve 14；(as shown in Figure 3)
3) lead screw shaft 5 is provided with the side of hydraulic joint 11 and connects pressuring pump by hydraulic joint 11, suppresses 20~25MPa,
Hydraulic oil enters hydraulic cylinder 3 by hydraulic pressure oilhole and through radial direction fuel feed hole, and hydraulic cylinder 3 moves along lead screw shaft 5 to the side of slips 21,
Promote slips 21 to be flared out, and be anchored on the tube wall of four-way junction of casing 13；(as shown in Figure 4)
4) voltage stabilizing 10~15 minutes, stop valve 10 is closed, removes pressuring pump, holding screw 8 is unclamped, successively from lead screw shaft 5
On unload outer tube 6 and clip 15, change gate valve 14；(as shown in Figure 5)
5) after the completion of gate valve 14 is changed, clip 15, outer tube 6 and holding screw 8 are reinstalled, opens the pressure release of stop valve 10
Slips 21 returns to original position under compression spring effect afterwards；Rotating threaded shaft axle 5 makes leading screw shaft head return in outer tube 6, closes lock
Valve 14, gate valve replacing device operated under pressure I and clip 15 are removed, whole replacing gate valve process with pressure terminates.
As shown in Fig. 2 the gate valve 14 of production wellhead is connected by four-way junction of casing 13 with the hanger 12 of tubing head, gate valve 14
It is interior to be with the pressure oil communication from well head, gate valve replacing device operated under pressure I of the present invention operation principle：By that will carry
In four-way junction of casing 13 before the leading screw shaft head push-in gate valve 14 of slip assemblies 2, hydraulic cylinder 3 and sealing shroud 4, and it is passed through hydraulic oil
Promote hydraulic cylinder 3 to jack up the slips 21 in slip assemblies 2, a watt card 21 is anchored on the tube wall of four-way junction of casing 13, by sealing shroud 4
Sealing is in without pressure shape all the time so as to block the pressure oil circuit from well head in the whole Renewal process of gate valve 14 in gate valve 14
State, it is achieved thereby that the purpose with pressure for changing gate valve 14.
Claims (5)
1. the gate valve replacing options with pressure based on production wellhead gate valve replacing device operated under pressure, it is characterised in that the production wellhead
Gate valve replacing device operated under pressure includes lead screw shaft, slip assemblies, hydraulic cylinder, sealing shroud, outer tube, feed screw nut, stop valve and liquid
In the anterior optical axis section of lead screw shaft, hydraulic cylinder rear portion is close by sealing shroud for crimp head, wherein slip assemblies and hydraulic cylinder
Envelope；Lead screw shaft rear portion leading screw section is set with outer tube by feed screw nut, is fixed by locking nut, has and card on the inside of outer tube
The adaptable shape of hoop connection；Elongated hydraulic pressure oilhole is provided with the middle part of lead screw shaft, by the stop valve for being fixed on leading screw shaft rear end
With the external pressuring pump of hydraulic joint；Hydraulic pressure oilhole is provided with radial direction fuel feed hole connection hydraulic cylinder, and end sets closure sealing；The slips
Component is made up of slips overcoat, compression spring and slips, and along the circumferential direction uniform several slips, slips outer surface are put outside slips
With tooth-shape structure, compression spring is set between slips and slips overcoat；
Gate valve replacing options with pressure comprise the following steps：
1) all parts are installed to composition gate valve replacing device operated under pressure, outer tube in lead screw shaft and silk is screw into by feed screw nut
Thick stick axle is anterior, and now sealing shroud, hydraulic cylinder and slip assemblies enter in the toroidal cavity of outer tube, will pass through card on the inside of outer tube
Hoop is fixedly connected with gate valve side；
2) gate valve is opened, the leading screw shaft head for making to be provided with slip assemblies and hydraulic cylinder by rotating threaded shaft axle is entered by gate valve
In the four-way junction of casing being connected with gate valve opposite side；
3) lead screw shaft is provided with hydraulic joint side and connects pressuring pump by hydraulic joint, suppresses 20~25MPa, hydraulic oil passes through
Hydraulic pressure oilhole simultaneously enters hydraulic cylinder through radial direction fuel feed hole, and hydraulic cylinder moves along leading screw axial direction slips side, promotes slips outwards to open
Open, and be anchored on four-way junction of casing tube wall；
4) voltage stabilizing 10~15 minutes, stop valve is closed, removes pressuring pump, unclamp holding screw, unloaded successively from lead screw shaft outer
Sleeve pipe and clip, change gate valve；
5) after the completion of replacing gate valve, clip, outer tube and holding screw are reinstalled, slips is compressing after opening stop valve pressure release
Original position is returned under spring effect；Rotating threaded shaft axle makes leading screw shaft head return in outer tube, closing gate valve, it is with pressure more to remove gate valve
Changing device and clip, whole replacing gate valve process with pressure terminate.
2. the gate valve replacing options with pressure according to claim 1 based on production wellhead gate valve replacing device operated under pressure, it is special
Sign is that the hydraulic cylinder front end and lead screw shaft front end have the pyramidal structure being adapted with slips inner surface.
3. the gate valve replacing options with pressure according to claim 1 based on production wellhead gate valve replacing device operated under pressure, it is special
Sign is that the lead screw shaft upper leading screw segment length is more than the overall length of outer tube and gate valve, and sealing can be accommodated by having on the inside of outer tube
The toroidal cavity of set, hydraulic cylinder and slip assemblies.
4. the gate valve replacing options with pressure according to claim 1 based on production wellhead gate valve replacing device operated under pressure, it is special
Sign is that the outer tube is fixed with feed screw nut end face by several uniform holding screws.
5. the gate valve replacing options with pressure according to claim 1 based on production wellhead gate valve replacing device operated under pressure, it is special
Sign is that the stop valve is angular needle-valve, and its maximum appearance and size is less than overcoat bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510306665.XA CN104879079B (en) | 2015-06-05 | 2015-06-05 | Production wellhead gate valve replacing device operated under pressure and gate valve replacing options with pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510306665.XA CN104879079B (en) | 2015-06-05 | 2015-06-05 | Production wellhead gate valve replacing device operated under pressure and gate valve replacing options with pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104879079A CN104879079A (en) | 2015-09-02 |
| CN104879079B true CN104879079B (en) | 2018-02-09 |
Family
ID=53946730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510306665.XA Expired - Fee Related CN104879079B (en) | 2015-06-05 | 2015-06-05 | Production wellhead gate valve replacing device operated under pressure and gate valve replacing options with pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104879079B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351610B (en) * | 2016-09-30 | 2018-10-30 | 盘锦禹帝科技实业有限公司 | Well mouth protector and specific purpose tool |
| CN107816329B (en) * | 2017-10-26 | 2023-12-12 | 中国石油化工集团有限公司 | Device for processing choke tube sand-blocking cable in perforating operation under pressure |
| 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 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5025857A (en) * | 1988-10-20 | 1991-06-25 | Mcleod Roderick D | Wellhead tubing and casing packer and installation and removal tool |
| CN2563292Y (en) * | 2002-07-08 | 2003-07-30 | 泸州长江液压件制造有限公司 | Oil pipe blanking plug for hydraulic changing valve with pressure |
| CA2421348A1 (en) * | 2003-03-07 | 2004-09-07 | L. Murray Dallas | Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well |
| CN2753869Y (en) * | 2004-09-11 | 2006-01-25 | 龚伟安 | Snubbing replaceable high-pressure natural gas recovery wellhead sluice valve device |
| CN101538995B (en) * | 2009-02-27 | 2013-04-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for replacing valve by utilizing borehole pressure |
| CN201627562U (en) * | 2010-02-10 | 2010-11-10 | 中国石油天然气股份有限公司 | Switch plugging blowout control device in wellhead |
| CN203214006U (en) * | 2013-04-25 | 2013-09-25 | 盘锦勇盛利石油科技开发有限公司 | Device for under-pressure replacement of wellhead gate valve |
| CN204960844U (en) * | 2015-06-05 | 2016-01-13 | 辽宁石油机械制造有限公司 | Oil recovery well head gate valve area is pressed and is changed device |
-
2015
- 2015-06-05 CN CN201510306665.XA patent/CN104879079B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104879079A (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104879079B (en) | Production wellhead gate valve replacing device operated under pressure and gate valve replacing options with pressure | |
| CN104535715A (en) | Crack particles diversion agent temporary blockage capability evaluation apparatus and method thereof | |
| CN106969983A (en) | A kind of Demolition Tester of Tubing Pressure Resistance | |
| CN204301938U (en) | Downhole packing test convenient type verifying attachment | |
| CN201068781Y (en) | Down-hole fixed pressure opening valve for injection, extraction and washing | |
| CN204255929U (en) | A kind of crack particle diverting agent is stifled merit rating device temporarily | |
| CN203321465U (en) | Bridge type concentric water distributor | |
| CN204804741U (en) | Cable sealing device for hollow sucker rod | |
| CN204960844U (en) | Oil recovery well head gate valve area is pressed and is changed device | |
| CN205139137U (en) | Taper thread high pressure rock core holder | |
| CN206362637U (en) | A kind of big pressure hydraulic pressure test fixture of both ends open cylindrical member | |
| CN208330240U (en) | Continuous pipe pitching auxiliary tool, pitching mechanism | |
| CN204646826U (en) | A kind of hydraulic system of hydraulic test bench | |
| CN209704984U (en) | Hydraulic system | |
| CN209525069U (en) | A kind of steel tube coupling thread seal system safety testing device | |
| CN103267149B (en) | Automatic dress column valve | |
| CN103968148B (en) | A kind of online method for blocking of leakage flat valve | |
| CN202007645U (en) | Manual locking device for hydraulic control blowout preventer | |
| CN203584382U (en) | Extract oil circulation injection and extraction device | |
| CN208073741U (en) | Steam injection switch valve | |
| CN109538194B (en) | Coiled tubing underground quick leakage finding process pipe column and using method | |
| CN109138855A (en) | Extract underground heat hollow rod | |
| CN201367904Y (en) | Large sampling cylinder for reservoir drilling halfway tester | |
| CN205424263U (en) | Formula leaking stoppage ware is crowded to hydraulic ram | |
| CN202596663U (en) | Check valve for well mouth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 |