CN85109237A - The apparatus and method of cutting and recovery submarine surface sleeve pipe - Google Patents
The apparatus and method of cutting and recovery submarine surface sleeve pipe Download PDFInfo
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- CN85109237A CN85109237A CN85109237.3A CN85109237A CN85109237A CN 85109237 A CN85109237 A CN 85109237A CN 85109237 A CN85109237 A CN 85109237A CN 85109237 A CN85109237 A CN 85109237A
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Abstract
A kind of device that is used to cut and reclaim the subsea wellheads sleeve pipe, it comprises a casing cutter, monolithic location and swivel assembly and axle, locking devicen and actuating device.Should cut during use and retracting device is put into the well head sleeve pipe, and unclamp locking devicen and promote drilling rod then, and make actuating device drive clamping element, and open cutting tool, drive drilling rod and axle to drive cutter cutting sleeve pipe with the chucking sleeve pipe.Promoting drilling rod after cutting finishes can extract the well head sleeve pipe.
Description
The present invention is about the modifying device and the method for miscellaneous equipment on cutting seabed sleeve pipe and recovery seabed sleeve pipe and the seabed.The reason of carrying out a particular importance of this cutting and recovery is to remove those to stay the equipment that the seabed can cause accident.
The U.S. 3,983, No. 936 patents have been announced the method for a kind of cutting and recovery seabed wellhead equipment.This method comprises the steps: to put down the tubing string of being made up of a casing cutter, fishing spear and change, change is put into the upper end of sleeve pipe.Begin cutting then, fishing spear expansion after finishing cutting, thus be stuck in securely in the sleeve pipe, along with the recovery of tubing string, sleeve pipe just is raised.
United States Patent (USP) 4,191,255 have announced the method for another kind of cutting and recovery of casing.This method and 3,983, No. 936 the patent difference is: fishing spear is all the time on the sleeve pipe upper end in cutting process, and after finishing cutting, just put down fishing spear, make it to enter the sleeve pipe that has cut, and fix, seabed wellhead equipment just can rise with tubing string subsequently, reclaims up from the seabed.
The still success of the recovery seabed wellhead equipment that has earlier and the method for sleeve pipe upper end, but but operating aspect still has improvements, should advance to cutting to sleeve pipe fixing during so that in cutting process, just strain sleeve pipe.If accomplish to strain all the time, just can guarantee that then sleeve pipe can not produce slippage after cutting neutralization cutting, also can finish the fixing of sleeve pipe, and need not handle tubing string again after cutting between cutting.
An object of the present invention is to propose a kind of improved apparatus and method of in a two-way process, finishing the cutting and the recovery of seabed sleeve pipe, to improve economy.
Another object of the present invention is to improve the efficient of seabed sleeve pipe cutting and recovery method.
A further object of the invention be make cutting of seabed sleeve pipe and retracting device simple in structure, reliability is high.
Above-mentioned and other purpose and advantage below in conjunction with following accompanying drawing statement and explanation.
Figure one is the sectional drawing of the modifying device of the submarine well and the seabed sleeve pipe of packing into.
The sectional drawing of Fig. 2 and Fig. 1 is similar, but wherein tubing string is placed on the sleeve pipe upper end, seabed.
Fig. 3 is the sectional drawing of expression cutting step of the present invention.
Fig. 4 is the sectional drawing of expression recycling step of the present invention.
Fig. 5 is the phantom of modifying device of the present invention.
Fig. 6 is the sectional drawing of Fig. 5 at the 6-6 place.
Fig. 7 is a sectional view, and the expansion coupling of representing modifying device of the present invention is in the situation when upholding the position.
As shown in Figure 1, in the opening end that is contained in the seabed casing head W of apparatus of the present invention let-down within the cannula C on the drill string D. Inner sleeve 10 has seat ring 12 in the top, inner sleeve within one or more overcoat tubing strings 14, outer guiding device, the chassis 16 of being with of outer tube. Drill string D is connected in the combination tool of the present invention factory.
There is casing cutter 18 lower end of tools factory, and in the integrated positioning change 22 that cutter is connected thereto, change is two to link to each other with drill string D. Send in the process in tools factory, locking devicen 24 remains on its not fixed position to the two localization part of location change. Also can make locking devicen 24 unclamp breech lock by handling drill string D, in order to before the cutting localization part is fixed within the inner sleeve 10 beginning.
The detailed construction of tools factory such as Fig. 5, Fig. 6 and shown in Figure 7. Telescopic joint 20 has the axle 30 of hollow, and pin end 32 is arranged on it, with by being threaded onto on casing cutter 18 and the sleeve 34. The outside of axle 30 is octagonal, and just in time the inner surface with sleeve 34 matches, and sees also Fig. 6. Such structure makes the rotation of drill string mouth drive casing cutter 18 and rotates together, and allows to do between axle 30 and the sleeve 34 to axial motion. No matter if require before finishing that sleeve is anxious and cutting or cannula C is cut to get the permanent D of Recycling of drill rod how, the localization part that so this structure also can allow to locate change 22 is thrown off. With the upper end that screw thread is screwed to axle 30 to ring 36, the appearance and size of ring 36 is a bit larger tham the octagonal part of axle. Ring 38 also is the bottom that is screwed to sleeve 34 by screw thread, and the inner surface size of ring 38 is slightly smaller than the angled portion of sleeve 34. Installing pressed on ring 36 and ring 38 additional is in order to prevent axle 30 and sleeve 34 disengagements.
The upper end of sleeve 34 is little thick, to form end face shoulder 40 upwards; And on the upper end of sleeve 34 screw thread is arranged, so that connect upper spindle 42, upper spindle 42 is screwed to the bottom of drill string D by screw thread.Conical rings 44 surrounds upper spindle 42, ring in 44 carrier ring 48 and bearer ring 50 with and the bearer ring 46 of bottom be used to provide support, bearer ring 48 and bearer ring 50 are contained in the upper inner surface and the following inner surface of conical rings 44 respectively.Conical rings 44 comprises upwards and intilted wedge-shaped surface 52.The upper end of conical rings 44 is just in time below the ventricumbent shoulder 54 of upper spindle 42.There is box thread 56 upper end of axle 42, and this box thread is used for the pin end of jointed rod post D.The external surface that pin 58 is installed to upper spindle 42, and with garter spring 62 on the single T groove collaborative work.Flange 64 is arranged, by band cap screw 68 holding flanges 64 on the garter spring 62.The calotte 65 that is fixed on the garter spring 62 protrudes upward, and then near upper spindle 44, forms a cover cap above garter spring 62, with the joint of guard pin and single T groove, referring to Fig. 5 and Fig. 6.Keeper 66 comprises ring 70 and disturbing property arm 72, and slide plate 74 is housed on the external surface of disturbing property arm.The lower inner surface of disturbing property arm 72,76 places are upwards and inside tapering on the plane, so that receive the wedge-shaped surface 52 of conical rings 44.Last ring 70 is outwards stretched out, matching with flange 64, on encircle 70 the downward shoulder of end face 28 also arranged, be placed on the situation lower shoulder 28 and seat ring 12 engagements of well head W at instrument.Like this, by the single T groove that pin 58 is inserted in the garter spring 62, locking devicen 24 is pinned.At locked position shown in Figure 5, can prevent that conical rings 44 relative positioning spares 66 from raising.Opening under the locking devicen situation, garter spring 62 and keeper 66 just can not be owing to moving upward of drill string D be moved, and conical rings 44 just can raise in face 76 like this.Make the inner surface of slide plate 74 wedging inner sleeves 10, and form tight clamped condition.Its clamping force can continue to bear during cutting enough to the tightening force of drill string D, also enough bears the cannula C under the cutting and the weight on the guiding device chassis 16 on the drilling rod D in removal process.
The relative motion of expansion coupling 20 can make drill string D at any time can both descend, so that conical rings 44 takes off from keeper 66, and the slide plate 74 and the inner surface of inner sleeve 10 is thrown off.Meanwhile, the position latching that pin 58 can change single T groove 60 over to, and the instrument fourth just can be separated recovery with the sleeve pipe under the cutting and come up, and perhaps can reclaim before the sleeve pipe well cutting.
Claims (12)
1, a kind of cutting of forming by following each several part and reclaim the device of seabed sleeve pipe:
A setting of casing cutter has cutting tool on it, cutting tool outwards stretches so that cutting seabed sleeve pipe when cutter rotates;
A monolithic is located and swivel assembly, and this assembly is contained on the casing cutter, and can move between its permanent position (vertically moving with respect to sleeve pipe to stop it) and released position (allowing it to move with respect to sleeve pipe); There is one to connect centre bore and some clamping elements on above-mentioned location and the change unitary device, in order to folder position sleeve pipe;
An axle, this axle is suspended from drill string, and axle is passed the centre bore on above-mentioned monolithic location and the swivel assembly.Axle can be with respect to above-mentioned monolithic location and swivel assembly rotation; Above-mentioned axle is connected with above-mentioned casing cutter with type of drive, so that above-mentioned cutter is rotated with respect to above-mentioned sleeve pipe in cutting;
A locking devicen, this device is between above-mentioned axle and above-mentioned monolithic location and swivel assembly, can between position latching (this moment, axle was rotated with the location swivel assembly) and released position (this moment, axle was with respect to location swivel assembly rotation), move selectively, and allow to vertically move with respect to above-mentioned location swivel assembly;
An actuating device, this is used to drive clamping element, and it is installed on the above-mentioned axle, can travel longitudinally and relative rotary motion; When locking devicen moved to released position and axle and rises, actuating device drove above-mentioned clamping element, made its gripping sleeve and made axle and drill string is in extended state; And when axle and drill string decline, actuating device makes clamping element unclamp sleeve pipe; Axle all can be rotated with respect to clamping element and actuating device when raised position and down position.
2, a kind of seabed sleeve pipe cutting and retracting device that requires in claim 1, locking devicen wherein comprise the joint that pin between axle and monolithic location swivel assembly and single T groove are formed.
3, a kind of seabed sleeve pipe cutting and retracting device that requires in claim 2 has a calotte on the monolithic location swivel assembly wherein, and this calotte extends above pin and single T groove joint to be protected with butt joint.
4, a kind of cutting and retracting device of the seabed sleeve pipe that in claim one, requires, wherein the actuating device of clamping element includes a conical ring, this conical ring is installed on the axle under the clamping element, order about clamping element outwards expansion and sleeve engages when axle is in raised position, make clamping element in running order.
5, a kind of cutting of forming by following each several part and receive the device of seabed sleeve pipe;
A setting of casing cutter has cutting tool on it, cutting tool outwards stretches so that cutting seabed sleeve pipe when cutter rotates;
A positioner, this device is contained on the casing cutter, and the seat on sleeve pipe, positioner can move between its permanent position (travelling longitudinally with respect to sleeve pipe to stop it) and released position (allowing it to move with respect to sleeve pipe); There is one to run through centre bore and some on the above-mentioned positioner in order to clamp the clamping element of sleeve pipe;
One single mandrel, its top and drill string are fixed together, and axle is passed the centre bore that runs through on the positioner, and install to such an extent that can rotate with respect to above-mentioned positioner, above-mentioned axle is connected with type of drive with casing cutter, so that rotate above-mentioned cutter, makes its cutting sleeve pipe;
A locking devicen, this device is contained between axle top and the positioner, can move selectively closing between position (this moment axle top rotate) and the back-off assembly (this moment, axle top can rotate with respect to positioner), and permission vertically moves with respect to above-mentioned positioner with positioner;
Be used to drive the actuating device of clamping element, it is installed in axle top, but can with axle lengthwise movement together and mutually center roller rotate; When locking devicen moved to released position and axle rising, actuating device drove above-mentioned clamping element, makes its gripping sleeve, and makes axle and drill string be in extended state, and when axle and drill string decline, actuating device makes clamping element unclamp sleeve pipe; Axle is all rotated with respect to clamping element and actuating device when raised position and down position.
6, a kind of seabed sleeve pipe cutting and retracting device that in claim 5, requires, wherein the device that is connected with the bottom and the said cutter of said axle is under blocking device unclamps situation, can travel longitudinally with respect to the top of said axle, thereby bottom that the top of said axle can said relatively axle and cutter rise, make clamping element work thus, and when the cutting sleeve pipe, but the drill string sleeve pipe applies tightening force.
7, a kind of seabed sleeve pipe cutting and retracting device that in claim 6, requires, the device that wherein is installed in the axle bottom includes an expansion coupling that is connected on the cutter, one trap (expansion coupling can travel longitudinally between extended position and punctured position) that is installed to the expansion coupling upper end arranged at the top of axle, after finishing cutting, the actuating device of clamping element and the top of axle can descend with respect to the bottom and the cutter of axle, so that clamping element and sleeve pipe are thrown off.
8, a kind of cutting of forming by following each several part and reclaim the device of seabed sleeve pipe:
A setting of casing cutter has cutting tool on it, cutting tool outwards stretches when cutter rotates, so that cutting seabed sleeve pipe;
A positioner, this device is contained on the casing cutter, and be sitting on the sleeve pipe, positioner can move between its permanent position (travelling longitudinally with respect to sleeve pipe to stop it) and disengaged position (allowing it to move with respect to sleeve pipe), has one to penetrate centre bore and some in order to clamp the clamping element of sleeve pipe on the above-mentioned positioner;
One single mandrel, its top and drill string are fixed together, and axle is passed the centre bore that runs through on the positioner, and install to such an extent that can rotate with respect to above-mentioned positioner, the bottom of above-mentioned axle is connected with type of drive with casing cutter, is used for rotating above-mentioned cutter, so that the cutting sleeve pipe.
A blocking device, this device is between axle top and positioner, can between locked position of coupler (this moment, axle top rotated with positioner) and released position (this moment, axle top rotated with respect to positioner), move selectively, and allow to vertically move with respect to above-mentioned positioner;
Be used to drive the actuating device of clamping element, it is installed in axle top, but can with axle lengthwise movement together and center roller transhipment mutually; When blocking device unclamps, actuating device vertically moves lifting position with axle with respect to positioner, make the outside mobile gripping sleeve of clamping element, there is an open sleeve lower end on above-mentioned axle top, and open sleeve is used to hold the upper end of above-mentioned axle bottom so that can vertically move relatively between them; Be that rotation drives connection between the bottom of above-mentioned sleeve and above-mentioned axle, and allow to vertically move relatively between the two.
9, a kind of seabed sleeve pipe cutting and retracting device that in claim 8, requires; Wherein the actuating device of clamping element includes a conical ring, and this ring is installed on the axle that is positioned at below clamping, and when axle was in lifting position, conical ring ordered about outside stretching, extension of clamping element and clamps sleeve pipe, makes clamping element in running order.
10, the method for a kind of subsea wellheads sleeve pipe cutting and recovery comprises the following steps;
The drill string that will have the fixed and swivel assembly of axle (tubulature cutter on it), monolithic and be contained in the blocking device of throwing off between monolithic location swivel assembly and the axle is put into the opening of subsea wellheads sleeve pipe, and wherein monolithic location swivel assembly has a seat board and several keepers;
The monolithic that is equipped with that enters in the subsea wellheads sleeve pipe is located the upper end of the drill string let-down of swivel assembly to the seabed sleeve pipe that will cut;
Handle drill string so that unclamp blocking device, thereby make the axle can be with respect to the upper end lengthwise movement of location swivel assembly and sleeve pipe;
After unclamping blocking device, promote axle, so that make the keeper contact and be fixed on the sleeve pipe, axle rises and makes axle and drill string bear tensile force, and monolithic location swivel assembly is then stayed the seating position of sleeve pipe upper end, seabed when axle rises motionless;
Start cutter, so that mobile cutting tool makes it to contact with the sleeve pipe cutting;
Rotary drilling roofbolt and axle are so that the cutting sleeve pipe;
Let-down axle and drill string, so that the clamping and release between keeper and the sleeve pipe are also unclamped the tension of center roller, meanwhile monolithic location swivel assembly is then stayed on the seating position of sleeve pipe motionless;
Promote drill string, reclaim the sleeve pipe under having cut.
11, the cutting and the recovery method of the seabed sleeve pipe that in claim 10, requires, also comprising the steps: to form between cutter and axle top a kind of null is connected, axle is moved upward so that the situation lower spindle of fixed positioning piece just can travel longitudinally with respect to cutter like this, thereby in cutting process, cutter need not made any drill string that moves upward and just can be tightened up under the situation of unclamping locking devicen, fixed positioning piece.
12, the cutting of ocean floor drilling sleeve pipe and the recovery method that in claim 11, require, also comprise the following steps: after axle is unclamped from sleeve pipe with respect to the swivel assembly decline of monolithic location with clamping element, again make the swivel assembly locking of axle and monolithic location, the decline of the relative cutter of axle is connected realizations by axle top with null between the heart bottom, thereby can be before reclaiming the sleeve pipe that cuts further cuts sleeve pipe and breech lock is lived axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85109237.3A CN1004217B (en) | 1985-11-02 | 1985-11-02 | Device and method for sectioning and recovery of seabed surface casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85109237.3A CN1004217B (en) | 1985-11-02 | 1985-11-02 | Device and method for sectioning and recovery of seabed surface casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85109237A true CN85109237A (en) | 1987-07-08 |
| CN1004217B CN1004217B (en) | 1989-05-17 |
Family
ID=4796279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85109237.3A Expired CN1004217B (en) | 1985-11-02 | 1985-11-02 | Device and method for sectioning and recovery of seabed surface casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004217B (en) |
Cited By (7)
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| CN101550811B (en) * | 2009-05-08 | 2010-06-02 | 深圳远东石油工具有限公司 | Lifting full water depth outer suspension clutch unlock underwater well head cutting recovery combined tool |
| CN102080511A (en) * | 2011-01-05 | 2011-06-01 | 深圳市远东石油钻采工程有限公司 | Deepwater abandoned well cutting device having cementing plug and operation method of cementing plug thereof |
| CN102797428A (en) * | 2012-08-30 | 2012-11-28 | 中国海洋石油总公司 | Well abandoning tool capable of locking position |
| CN101427003B (en) * | 2006-04-25 | 2013-01-09 | 国民油井华高有限合伙公司 | Apparatus and method for severing a wellbore tubular |
| CN104358537A (en) * | 2014-11-06 | 2015-02-18 | 天津市伟星新型建材有限公司 | Special knife for recovery of liner pipe |
| WO2017046613A1 (en) * | 2015-09-16 | 2017-03-23 | George Telfer | Downhole cut and pull tool and method of use |
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| CN101614118B (en) * | 2009-05-08 | 2012-05-30 | 深圳市远东石油钻采工程有限公司 | Clutch unlocking and rotating mechanism of underwater cutting tool |
-
1985
- 1985-11-02 CN CN85109237.3A patent/CN1004217B/en not_active Expired
Cited By (12)
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|---|---|---|---|---|
| CN101427003B (en) * | 2006-04-25 | 2013-01-09 | 国民油井华高有限合伙公司 | Apparatus and method for severing a wellbore tubular |
| CN101550811B (en) * | 2009-05-08 | 2010-06-02 | 深圳远东石油工具有限公司 | Lifting full water depth outer suspension clutch unlock underwater well head cutting recovery combined tool |
| CN102080511A (en) * | 2011-01-05 | 2011-06-01 | 深圳市远东石油钻采工程有限公司 | Deepwater abandoned well cutting device having cementing plug and operation method of cementing plug thereof |
| CN102797428A (en) * | 2012-08-30 | 2012-11-28 | 中国海洋石油总公司 | Well abandoning tool capable of locking position |
| CN102797428B (en) * | 2012-08-30 | 2015-03-25 | 中国海洋石油总公司 | Well abandoning tool capable of locking position |
| CN104358537A (en) * | 2014-11-06 | 2015-02-18 | 天津市伟星新型建材有限公司 | Special knife for recovery of liner pipe |
| WO2017046613A1 (en) * | 2015-09-16 | 2017-03-23 | George Telfer | Downhole cut and pull tool and method of use |
| CN107949683A (en) * | 2015-09-16 | 2018-04-20 | 阿登纳科技公司 | Underground is cut and drafting tool and application method |
| AU2016322698B2 (en) * | 2015-09-16 | 2021-08-12 | Ardyne Holdings Limited | Downhole cut and pull tool and method of use |
| US11428061B2 (en) | 2015-09-16 | 2022-08-30 | Ardyne Holdings Limited | Downhole cut and pull tool and method of use |
| CN113266289A (en) * | 2021-07-06 | 2021-08-17 | 中海石油(中国)有限公司 | Offshore oil and gas well riser reverse jacking recovery method |
| CN113266289B (en) * | 2021-07-06 | 2023-09-01 | 中海石油(中国)有限公司 | Marine oil and gas well riser anti-top recovery method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004217B (en) | 1989-05-17 |
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