CN104499974A - Under-pressure Christmas tree replacement device and replacement method thereof - Google Patents
Under-pressure Christmas tree replacement device and replacement method thereof Download PDFInfo
- Publication number
- CN104499974A CN104499974A CN201410792093.6A CN201410792093A CN104499974A CN 104499974 A CN104499974 A CN 104499974A CN 201410792093 A CN201410792093 A CN 201410792093A CN 104499974 A CN104499974 A CN 104499974A
- Authority
- CN
- China
- Prior art keywords
- production tree
- flange
- counterbalance valve
- action bars
- tubing hanger
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
Abstract
The invention discloses an under-pressure Christmas tree replacement device and a replacement method thereof. The under-pressure Christmas tree replacement device comprises a seal cartridge, an operation rod and a back pressure valve. The seal cartridge is arranged in a flange at the top of a Christmas tree and used for forming a seal ring at the flange on the top of the Christmas tree and sealing well pressure in the Christmas tree; the operation rod is arranged in the seal cartridge and capable of moving up and down in the seal cartridge; the back pressure valve is vertically arranged at the bottom of the operation rod, the outer periphery of the back pressure valve is provided with an external thread matched with an internal thread of a mandrel hanger, and the back pressure valve is used for being fixedly connected with the mandrel hanger to hermetically block the well pressure. The under-pressure Christmas tree replacement device and the replacement method thereof have the advantages that the back pressure valve functioning in sealing is made of high-resistance hydrogen sulfide materials and capable of meeting the requirements of high-corrosion wellhead operations; according to the replacement method, a seal is arranged in each of the flange at the top of the Christmas tree and the mandrel hanger at the bottom of the Christmas tree, so that higher safety in Christmas tree replacement is achieved.
Description
Technical field
The present invention relates to petroleum industry field, be specifically related to a kind of production tree replacing device operated under pressure and replacing options thereof.
Background technology
In prior art, after driving a well, need the operational method changing production tree, be all needed before changing production tree, be means with kill-job, borehole pressure sealed, then changes production tree.But this method not only cost height also possesses certain risk, misoperation, easily have an impact to the normal production of oil reservoir, serious meeting blocks oil reservoir.
So, need badly and a kind of production tree replacing device operated under pressure is provided, solve the problem that the production tree in oil exploitation is changed safely, and its replacing options also should be safe and reliable.
Summary of the invention
The object of the present invention is to provide a kind of production tree replacing device operated under pressure and replacing options thereof, it temporarily can seal borehole pressure, reach operation production tree dismounting being carried out changing, and use procedure is fool proof.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of production tree replacing device operated under pressure, the top of described production tree is provided with flange, described flange is provided with oil recovery cap; The bottom connected pipes of described production tree is hung, and described tubing hanger is provided with internal thread; Expanding channels is passed through between the flange at described production tree top and tubing hanger; It is characterized in that, this production tree replacing device operated under pressure comprises:
Sealing drum, it is located in the flange at described production tree top, forms joint ring and be sealed in production tree by borehole pressure for the flange at production tree top;
Action bars, it is located in described sealing drum, and can move up and down in described sealing drum;
Counterbalance valve, it is vertically located at the bottom of described action bars, and its outer ring is provided with the external screw thread suitable with the internal thread of described tubing hanger, and it seals for being fixedly connected to form with described tubing hanger and blocking borehole pressure.
Above-mentioned production tree replacing device operated under pressure, wherein:
Described counterbalance valve is connected with bottom described action bars by spring card slot.
Above-mentioned production tree replacing device operated under pressure, wherein:
Described counterbalance valve adopts high anti-H 2 S material to make.
Utilize above-mentioned production tree replacing device operated under pressure to carry out the method changed, wherein, comprise following steps:
S1, installation production tree replacing device operated under pressure, be sealed in borehole pressure in production tree;
Borehole pressure is sealed in tubing hanger place by S2, operation production tree replacing device operated under pressure;
S3, more renew production tree;
S4, on the flange at new production tree top, oil recovery cap is installed.
Utilize above-mentioned production tree replacing device operated under pressure to carry out the method changed, wherein, described S1 comprises following steps:
S11, action bars is inserted sealing drum, counterbalance valve is set bottom action bars;
S12, the oil recovery cap unloaded on the flange at production tree top, be fixedly mounted on sealing drum in the flange at production tree top, and make the bottom of action bars and counterbalance valve maintain the flange position of oil recovery treetop, thus be sealed in production tree by borehole pressure.
Utilize above-mentioned production tree replacing device operated under pressure to carry out the method changed, wherein, described S2 comprises following steps:
S21, make counterbalance valve vertically move down to tubing hanger direction in production tree and pass production tree passage from flange position depression bar, when action bars can not move downward again, represent that counterbalance valve has arrived above tubing hanger, stop depression;
S22, rotation also depression bar, action bars drives counterbalance valve to screw in tubing hanger, and the external screw thread of counterbalance valve and the internal thread of tubing hanger are connected and fixed, and make borehole pressure be sealed in tubing hanger place;
S23, on carry action bars and make to depart from counterbalance valve bottom it;
S24, sealing drum to be unloaded from production tree together with action bars.
Utilize above-mentioned production tree replacing device operated under pressure to carry out the method changed, wherein, described S4 comprises following steps:
S41, sealing drum to be reinstalled to together with action bars in the flange at new production tree top;
S42, depression bar make send to tubing hanger place bottom it and be connected with counterbalance valve, and rotation process bar also drives counterbalance valve to unscrew dropout from the internal thread of tubing hanger, when the moment of rotation process bar obviously reduces, and operation of stopping the rotation;
S43, on carry action bars, make counterbalance valve pass new production tree passage and deliver to the flange at new production tree top, sealing drum being unloaded from the flange at new production tree top together with action bars and counterbalance valve, the flange at new production tree top installs oil recovery cap.
The present invention compared with prior art has the following advantages: the counterbalance valve sealed adopts high anti-H 2 S material to make, and can meet the shaft mouth operation that corrosivity is high; Method used in the present invention arranges sealing together by being taken up in order of priority in the tubing hanger in the flange at production tree top and bottom it, makes the replacing operation of production tree safer.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention structural representation;
Fig. 2 is embodiments of the invention structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 1, a kind of production tree replacing device operated under pressure, the top of described production tree 1 is provided with flange 11, and described flange 11 is provided with oil recovery cap; The bottom connected pipes of described production tree 1 hangs 2, and described tubing hanger 2 is provided with internal thread 21; Expanding channels is passed through between the flange 11 at described production tree 1 top and tubing hanger 2; This production tree replacing device operated under pressure comprises: sealing drum 31, and it is located in the flange 11 at described production tree 1 top, forms joint ring for flange 11 place at production tree 1 top and is sealed in by borehole pressure in production tree 1; Action bars 311, it is located in described sealing drum 31, and can move up and down in described sealing drum 31; Counterbalance valve 32, it is vertically located at the bottom of described action bars 311, and its outer ring is provided with the external screw thread suitable with the internal thread of described tubing hanger 2, and it seals for being fixedly connected to form with described tubing hanger 2 and blocking borehole pressure.
Described counterbalance valve 32 is connected with bottom described action bars 311 by spring card slot.
Described counterbalance valve 32 adopts high anti-H 2 S material to make.
As shown in Figure 1, 2, a kind ofly utilize described production tree replacing device operated under pressure to carry out the method changed, it comprises following steps:
S1, installation production tree replacing device operated under pressure, be sealed in production tree 1 by borehole pressure;
Borehole pressure is sealed in tubing hanger 2 place by S2, operation production tree replacing device operated under pressure;
S3, more renew production tree;
S4, on the flange at new production tree top, oil recovery cap is installed.
Described S1 comprises following steps:
S11, action bars 311 is inserted sealing drum 31, counterbalance valve 32 is set bottom action bars 311;
S12, the oil recovery cap unloaded on the flange 11 at production tree 1 top, sealing drum 31 is fixedly mounted in the flange 11 at production tree 1 top, and flange 11 position making the bottom of action bars 311 and counterbalance valve 32 maintain production tree 1 to push up, thus borehole pressure is sealed in production tree 1.
Described S2 comprises following steps:
S21, counterbalance valve 32 is made vertically to move down to tubing hanger 2 direction in production tree 1 and pass production tree 1 passage from flange 11 position depression bar 311, when action bars 311 can not move downward again, represent that counterbalance valve 32 has arrived above tubing hanger 2, stop depression;
S22, rotation also depression bar 311, action bars 311 drives counterbalance valve 32 to screw in tubing hanger 2, and the external screw thread of counterbalance valve 32 and the internal thread of tubing hanger 2 are connected and fixed, and makes borehole pressure be sealed in tubing hanger 2 place;
S23, on carry action bars 311 and make to depart from counterbalance valve 32 bottom it;
S24, sealing drum 31 to be unloaded from production tree 1 together with action bars 311.
Described S4 comprises following steps:
S41, sealing drum 31 to be reinstalled to together with action bars 311 in the flange at new production tree top;
S42, depression bar 311 make to send to tubing hanger 2 place bottom it and are connected with counterbalance valve 32, and rotation process bar 311 also drives counterbalance valve 32 to unscrew dropout from the internal thread of tubing hanger 2, when the moment of rotation process bar 311 obviously reduces, and operation of stopping the rotation;
S43, on carry action bars 311, counterbalance valve 32 is made to pass new production tree passage and deliver to the flange at new production tree top, sealing drum 31 is unloaded from the flange at new production tree top together with action bars 311 and counterbalance valve 32, the flange at new production tree top installs oil recovery cap.
In above-mentioned operating procedure, the operation of rotation process bar 311 is all realized by polished rod spanners 4.
In the present invention, the counterbalance valve sealed adopts high anti-H 2 S material to make, and can meet the shaft mouth operation that corrosivity is high; Method used in the present invention arranges sealing together by being taken up in order of priority in the tubing hanger in the flange at production tree top and bottom it, makes the replacing operation of production tree safer.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. a production tree replacing device operated under pressure, the top of described production tree (1) is provided with flange (11), and described flange (11) is provided with oil recovery cap; The bottom connected pipes of described production tree (1) hangs (2), and described tubing hanger (2) is provided with internal thread (21); Expanding channels is passed through between the flange (11) at described production tree (1) top and tubing hanger (2); It is characterized in that, this production tree replacing device operated under pressure comprises:
Sealing drum (31), it is located in the flange (11) at described production tree (1) top, forms joint ring for flange (11) place at production tree (1) top and is sealed in by borehole pressure in production tree (1);
Action bars (311), it is located in described sealing drum (31), and can move up and down in described sealing drum (31);
Counterbalance valve (32), it is vertically located at the bottom of described action bars (311), and its outer ring is provided with the external screw thread suitable with the internal thread of described tubing hanger (2), and it seals for being fixedly connected to form with described tubing hanger (2) and blocking borehole pressure.
2. production tree replacing device operated under pressure as claimed in claim 1, is characterized in that:
Described counterbalance valve (32) is connected with described action bars (311) bottom by spring card slot.
3. production tree replacing device operated under pressure as claimed in claim 2, is characterized in that:
Described counterbalance valve (32) adopts high anti-H 2 S material to make.
4. utilize the production tree replacing device operated under pressure described in claim 3 to carry out the method changed, it is characterized in that, comprise following steps:
S1, installation production tree replacing device operated under pressure, be sealed in production tree (1) by borehole pressure;
Borehole pressure is sealed in tubing hanger (2) place by S2, operation production tree replacing device operated under pressure;
S3, more renew production tree;
S4, on the flange at new production tree top, oil recovery cap is installed.
5. production tree replacing device operated under pressure as claimed in claim 4 carries out the method changed, and it is characterized in that, described S1 comprises following steps:
S11, by action bars (311) insert sealing drum (31), action bars (311) bottom counterbalance valve (32) is set;
S12, the oil recovery cap unloaded on the flange (11) at production tree (1) top, sealing drum (31) is fixedly mounted in the flange (11) at production tree (1) top, and flange (11) position making the bottom of action bars (311) and counterbalance valve (32) maintain production tree (1) to push up, thus borehole pressure is sealed in production tree (1).
6. production tree replacing device operated under pressure as claimed in claim 5 carries out the method changed, and it is characterized in that, described S2 comprises following steps:
S21, counterbalance valve (32) is made vertically to move down to tubing hanger (2) direction in production tree (1) and pass production tree (1) passage from flange (11) position depression bar (311), when action bars (311) can not move downward again, represent that counterbalance valve (32) has arrived tubing hanger (2) top, stop depression;
S22, rotation also depression bar (311), action bars (311) drives counterbalance valve (32) to screw in tubing hanger (2), and the external screw thread of counterbalance valve (32) and the internal thread of tubing hanger (2) are connected and fixed, and make borehole pressure be sealed in tubing hanger (2) place;
S23, on carry action bars (311) and make to depart from counterbalance valve (32) bottom it;
S24, sealing drum (31) to be unloaded from production tree (1) together with action bars (311).
7. production tree replacing device operated under pressure as claimed in claim 6 carries out the method changed, and it is characterized in that, described S4 comprises following steps:
S41, sealing drum (31) to be reinstalled to together with action bars (311) in the flange at new production tree top;
S42, depression bar (311) make to send to tubing hanger (2) place bottom it and are connected with counterbalance valve (32), rotation process bar (311) also drives counterbalance valve (32) to unscrew dropout from the internal thread of tubing hanger (2), when the moment of rotation process bar (311) obviously reduces, operation of stopping the rotation;
S43, on carry action bars (311), make counterbalance valve (32) through new production tree passage and deliver to the flange at new production tree top, sealing drum (31) is unloaded from the flange at new production tree top together with action bars (311) and counterbalance valve (32), the flange at new production tree top installs oil recovery cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792093.6A CN104499974A (en) | 2014-12-19 | 2014-12-19 | Under-pressure Christmas tree replacement device and replacement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792093.6A CN104499974A (en) | 2014-12-19 | 2014-12-19 | Under-pressure Christmas tree replacement device and replacement method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104499974A true CN104499974A (en) | 2015-04-08 |
Family
ID=52941414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410792093.6A Pending CN104499974A (en) | 2014-12-19 | 2014-12-19 | Under-pressure Christmas tree replacement device and replacement method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104499974A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006736A (en) * | 2021-05-25 | 2021-06-22 | 东营政阳自动化科技有限公司 | Corrosion-resistant well head production tree device with adjustable proclaim oneself type |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4452304A (en) * | 1981-06-24 | 1984-06-05 | Tri-State Oil Tool Industries | Remotely operated packer and anchor apparatus for changing a geothermal wellhead valve |
| US4460039A (en) * | 1982-11-04 | 1984-07-17 | W-K-M Wellhead Systems, Inc. | Wellhead valve removal and installation tool |
| CN101148976A (en) * | 2007-11-05 | 2008-03-26 | 新疆石油管理局钻井公司 | Non-well killing change christmas tree device and using method thereof |
| CN201371352Y (en) * | 2009-02-10 | 2009-12-30 | 重庆新泰机械有限责任公司 | Assembling and disassembling tool of back pressure valve |
| CN101691833A (en) * | 2008-12-31 | 2010-04-07 | 泸州川油钻采工具有限公司 | Mounting method and mounting device for replacing valve under pressure |
| CN204344028U (en) * | 2014-12-19 | 2015-05-20 | 上海神开石油化工装备股份有限公司 | A kind of production tree replacing device operated under pressure |
-
2014
- 2014-12-19 CN CN201410792093.6A patent/CN104499974A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4452304A (en) * | 1981-06-24 | 1984-06-05 | Tri-State Oil Tool Industries | Remotely operated packer and anchor apparatus for changing a geothermal wellhead valve |
| US4460039A (en) * | 1982-11-04 | 1984-07-17 | W-K-M Wellhead Systems, Inc. | Wellhead valve removal and installation tool |
| CN101148976A (en) * | 2007-11-05 | 2008-03-26 | 新疆石油管理局钻井公司 | Non-well killing change christmas tree device and using method thereof |
| CN101691833A (en) * | 2008-12-31 | 2010-04-07 | 泸州川油钻采工具有限公司 | Mounting method and mounting device for replacing valve under pressure |
| CN201371352Y (en) * | 2009-02-10 | 2009-12-30 | 重庆新泰机械有限责任公司 | Assembling and disassembling tool of back pressure valve |
| CN204344028U (en) * | 2014-12-19 | 2015-05-20 | 上海神开石油化工装备股份有限公司 | A kind of production tree replacing device operated under pressure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006736A (en) * | 2021-05-25 | 2021-06-22 | 东营政阳自动化科技有限公司 | Corrosion-resistant well head production tree device with adjustable proclaim oneself type |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150408 |