CN114458200A - Underwater wellhead cutting and recycling tool and using method thereof - Google Patents
Underwater wellhead cutting and recycling tool and using method thereof Download PDFInfo
- Publication number
- CN114458200A CN114458200A CN202011299639.6A CN202011299639A CN114458200A CN 114458200 A CN114458200 A CN 114458200A CN 202011299639 A CN202011299639 A CN 202011299639A CN 114458200 A CN114458200 A CN 114458200A
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- CN
- China
- Prior art keywords
- cutting
- wellhead
- underwater
- recovering
- head
- 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
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title description 4
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000011084 recovery Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/12—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground specially adapted for underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides an underwater wellhead cutting and recovering tool and a using method thereof.A wellhead plate is fixedly connected with the outer wall of a guide pile fishing barrel through a connecting rod so as to achieve the purpose of guiding a wellhead for cutting and recovering by using the guide pile fishing barrel. The invention uses high-pressure fluid to cut a plurality of layers of sleeves, uses the guide pile fishing barrel to recover the guide pile and the underwater wellhead, has simple operation and strong universality, and greatly reduces the operation difficulty.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas drilling and production equipment, in particular to an underwater wellhead cutting and recovering tool and a using method thereof.
Background
The abandonment of the underwater well head is the last ring in the well drilling and completion operation, generally comprises a plurality of steps of recovering a casing hanger and a shaft accessory, recovering a high-pressure well head and a low-pressure well head, injecting cement, and the like, and is completed by connecting and running different service tools for many times.
In the abandoning process of an underwater wellhead, a hydraulic cutter is generally used for cutting a small-size sleeve and a wellhead extension pipe, along with the increase of the operating water depth, the material of the wellhead extension pipe is better, the thickness is larger, the cutting time is longer, more seriously, the risk existing in the operation of cutting and recovering the wellhead and the probability of occurrence of complex conditions are also greatly increased, incomplete statistics is carried out, in the abandoning process of the underwater wellhead, the proportion of the complex conditions and the average non-production time of a well with the water depth of more than 100 meters in the abandoning operation are several times of that of a well with the water depth of less than 100 meters.
Disclosure of Invention
The underwater wellhead cutting and recycling tool and the using method thereof overcome the defects in the prior art, the existing underwater wellhead abandoning process adopts the hydraulic cutter to cut small-size casings and wellhead extension pipes, the occurrence probability of complex conditions is increased along with the increase of water depth, and the underwater wellhead cutting and recycling tool and the using method thereof are provided; in addition, the invention does not need a derrick and a drill rod, has low requirement on an operation platform, can finish the batch recovery of underwater wellheads by using a common working ship, and greatly reduces the operation cost.
The purpose of the invention is realized by the following technical scheme.
The utility model provides an instrument is retrieved in cutting of underwater well head, includes guide pile socket and cutting recovery subassembly, the cutting recovery subassembly includes well head dish, cutting equipment body and rotatory cutting head, the outer wall of well head dish pass through the connecting rod with the outer wall of guide pile socket is fixed continuous to the realization utilizes the guide pile socket to retrieve the purpose of the well head direction of a section of thick bamboo for cutting recovery the lower surface of well head dish is connected the cutting equipment body, the end-to-end connection of cutting equipment body rotatory cutting head utilizes rotatory cutting head spun high pressure fluid cutting high pressure well head and low pressure well head to realize the purpose of well head cutting, the head end of high pressure well head with the lower surface of well head dish contacts.
A high pressure umbilical cable provides the cutting apparatus body and the rotary cutting head with high pressure fluid required for cutting.
And a lifting hole is integrally formed in the upper surface of the wellhead plate, and a steel wire rope for recovering and cutting a wellhead is connected to the lifting hole.
The lower surface of the wellhead disc is of a planar structure or a deep hole is formed in the middle of the planar structure and used for wrapping a high-pressure wellhead therein so as to achieve the purpose of assisting centering of the high-pressure wellhead.
A use method of an underwater wellhead cutting and recovering tool comprises the following steps:
under the observation and the assistance of a remote control unmanned submersible vehicle (ROV), a cutting equipment body and a rotary cutting head which are connected with a high-pressure umbilical cable are penetrated into an underwater wellhead to be cut, then a guide pile fishing barrel of an underwater wellhead cutting and recovering tool is penetrated into a locking guide pile, and then the wellhead connected with a steel wire rope is seated on the underwater wellhead;
starting high-pressure fluid equipment, rotating the rotary cutting head, and cutting a multi-layer casing pipe of an underwater wellhead by using high-pressure fluid generated by the high-pressure fluid equipment;
and (4) recovering the steel wire rope, and recovering the underwater wellhead cutting and recovering tool and the cut underwater wellhead to finish one-time cutting and recovering operation.
The invention has the beneficial effects that: the multi-layer sleeve is cut by high-pressure fluid, so that the cutting speed is high, and the operation is convenient; the underwater wellhead is recovered through the locking guide pile, so that the underwater wellhead can be matched with underwater wellheads of different manufacturers, and the adaptability is strong; in addition, the invention does not need a derrick and a drill rod, has low requirement on an operation platform, can finish the batch recovery of underwater wellheads by using a common working ship, and greatly reduces the operation cost.
Drawings
FIG. 1 is a schematic side view of the present invention;
FIG. 2 is a schematic top view of the present invention;
in the figure: 1 is high pressure umbilical, 2 is wire rope, 3 is the wellhead disk, 4 is a guide pile bailer, 5 is the cutting equipment body, 6 is rotatory cutting head, and E01 is the locking guide pile, and E02 is the high pressure wellhead, and E03 is the direction basepan, and E04 is the low pressure wellhead.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example one
The utility model provides an instrument is retrieved in cutting of underwater wellhead, retrieve the subassembly including guide pile socket 4 and cutting, the subassembly is retrieved in the cutting includes wellhead disk 3, cutting equipment body 5 and rotatory cutting head 6, the outer wall of wellhead disk 3 passes through the fixed linking to each other of outer wall of connecting rod and guide pile socket 4, in order to realize utilizing guide pile socket 4 to be the purpose of the well head direction of cutting recovery, connect cutting equipment body 5 at wellhead disk 3's lower surface, the rotatory cutting head 6 of trailing end connection of cutting equipment body 5, utilize rotatory 6 spun high pressure fluid cutting high pressure well head E02 of cutting head and low pressure well head E04, in order to realize the purpose of well head cutting, the head end of high pressure well head E02 contacts with wellhead disk 3's lower surface.
In the cutting process, the whole device and the part to be recovered at the seabed (the part to be recovered at the seabed comprises a locking guide pile E01, a high-pressure wellhead E02, a guide base plate E03 and a low-pressure wellhead E04) are basically vibration-free, so the high-pressure wellhead E02 is not required to be connected with the wellhead plate 3, the connection can be realized only by contact, the lower surface of the wellhead plate 3 can adopt a plane structure or a deep hole is formed in the middle of the plane structure, the deep hole is used for wrapping the high-pressure wellhead therein to realize the purpose of assisting the centering of the high-pressure wellhead, and the lower surface of the wellhead plate 3 in the graph 1 is of a deep hole structure.
In the recovery process, the guide pile is fished by the guide pile fishing barrel 4, the guide base plate E03 is provided with a connecting mechanism, the connecting mechanism is connected with the low-pressure well mouth and the guide pile, the guide base plate E03, the low-pressure well mouth E04 and the high-pressure well mouth E02 can be directly recovered.
Example two
On the basis of the first embodiment, the high pressure umbilical cable 1 provides the cutting device body 5 and the rotary cutting head 6 with the high pressure fluid required for cutting.
The upper surface of the wellhead plate 3 is integrally provided with a lifting hole, and the lifting hole is connected with a steel wire rope 2 for recovering and cutting a wellhead.
EXAMPLE III
A use method of an underwater wellhead cutting and recovering tool comprises the following steps:
under the observation and the assistance of a remote control unmanned submersible vehicle (ROV), a cutting equipment body and a rotary cutting head which are connected with a high-pressure umbilical cable are penetrated into an underwater wellhead to be cut, then a guide pile fishing barrel of an underwater wellhead cutting and recovering tool is penetrated into a locking guide pile, and then the wellhead connected with a steel wire rope is seated on the underwater wellhead;
starting high-pressure fluid equipment, rotating the rotary cutting head, and cutting a multi-layer casing pipe of an underwater wellhead by using high-pressure fluid generated by the high-pressure fluid equipment;
and (4) recovering the steel wire rope, and recovering the underwater wellhead cutting and recovering tool and the cut underwater wellhead to finish one-time cutting and recovering operation.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. The utility model provides an instrument is retrieved in cutting of underwater wellhead which characterized in that: retrieve the subassembly including guide pile socket and cutting, the subassembly is retrieved in the cutting includes wellhead disk, cutting equipment body and rotatory cutting head, the outer wall of wellhead disk pass through the connecting rod with the outer wall of guide pile socket is fixed continuous to realize utilizing the guide pile socket to the purpose of the well head direction of cutting recovery the lower surface of wellhead disk is connected the cutting equipment body, the end-to-end connection of cutting equipment body rotatory cutting head utilizes rotatory cutting head spun high pressure fluid cutting high pressure well head and low pressure well head to realize the purpose of well head cutting, the head end of high pressure well head with the lower surface of wellhead disk contacts.
2. The subsea wellhead cutting recovery tool of claim 1, wherein: a high pressure umbilical cable provides the cutting apparatus body and the rotary cutting head with high pressure fluid required for cutting.
3. The subsea wellhead cutting recovery tool of claim 1, wherein: and a lifting hole is integrally formed in the upper surface of the wellhead plate, and a steel wire rope for recovering and cutting a wellhead is connected to the lifting hole.
4. The subsea wellhead cutting recovery tool of claim 1, wherein: the lower surface of the wellhead disc is of a planar structure or a deep hole is formed in the middle of the planar structure and used for wrapping a high-pressure wellhead therein so as to achieve the purpose of assisting centering of the high-pressure wellhead.
5. The use method of the underwater wellhead cutting and recovering tool is characterized in that: the method comprises the following steps:
step 1, connecting an underwater wellhead:
under the observation and the assistance of a remote control unmanned submersible vehicle (ROV), a cutting equipment body and a rotary cutting head which are connected with a high-pressure umbilical cable are penetrated into an underwater wellhead to be cut, then a guide pile fishing barrel of an underwater wellhead cutting and recovering tool is penetrated into a locking guide pile, and then the wellhead connected with a steel wire rope is seated on the underwater wellhead;
step 2, cutting an underwater wellhead:
starting high-pressure fluid equipment, rotating the rotary cutting head, and cutting a multi-layer casing pipe of an underwater wellhead by using high-pressure fluid generated by the high-pressure fluid equipment;
step 3, recovering the underwater wellhead:
and (4) recovering the steel wire rope, and recovering the underwater wellhead cutting and recovering tool and the cut underwater wellhead to finish one-time cutting and recovering operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299639.6A CN114458200A (en) | 2020-11-18 | 2020-11-18 | Underwater wellhead cutting and recycling tool and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299639.6A CN114458200A (en) | 2020-11-18 | 2020-11-18 | Underwater wellhead cutting and recycling tool and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114458200A true CN114458200A (en) | 2022-05-10 |
Family
ID=81404580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011299639.6A Pending CN114458200A (en) | 2020-11-18 | 2020-11-18 | Underwater wellhead cutting and recycling tool and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114458200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230407722A1 (en) * | 2022-05-31 | 2023-12-21 | Saudi Arabian Oil Company | Cutting a valve within a well stack |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3500906A (en) * | 1968-05-23 | 1970-03-17 | Shell Oil Co | Subsurface wellhead and connector |
| US20050145389A1 (en) * | 2003-08-12 | 2005-07-07 | Steve Barrow | Casing cutter |
| CN2820441Y (en) * | 2005-06-06 | 2006-09-27 | 中国海洋石油总公司 | Hydropower self rotary controllable abradant jet flow cutting device |
| CN206016739U (en) * | 2016-08-31 | 2017-03-15 | 李钰 | Drilling tool is reclaimed in a kind of deep water well head system cutting |
| CN108915629A (en) * | 2018-08-06 | 2018-11-30 | 西南石油大学 | It is a kind of for cutting the novel hydropower cutter device of multilayer sleeve |
-
2020
- 2020-11-18 CN CN202011299639.6A patent/CN114458200A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3500906A (en) * | 1968-05-23 | 1970-03-17 | Shell Oil Co | Subsurface wellhead and connector |
| US20050145389A1 (en) * | 2003-08-12 | 2005-07-07 | Steve Barrow | Casing cutter |
| CN2820441Y (en) * | 2005-06-06 | 2006-09-27 | 中国海洋石油总公司 | Hydropower self rotary controllable abradant jet flow cutting device |
| CN206016739U (en) * | 2016-08-31 | 2017-03-15 | 李钰 | Drilling tool is reclaimed in a kind of deep water well head system cutting |
| CN108915629A (en) * | 2018-08-06 | 2018-11-30 | 西南石油大学 | It is a kind of for cutting the novel hydropower cutter device of multilayer sleeve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230407722A1 (en) * | 2022-05-31 | 2023-12-21 | Saudi Arabian Oil Company | Cutting a valve within a well stack |
| US11873693B2 (en) * | 2022-05-31 | 2024-01-16 | Saudi Arabian Oil Company | Cutting a valve within a well stack |
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