CN102513645A - Deep water casing cutting device based on electric arc cutting - Google Patents
Deep water casing cutting device based on electric arc cutting Download PDFInfo
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- CN102513645A CN102513645A CN2011103716804A CN201110371680A CN102513645A CN 102513645 A CN102513645 A CN 102513645A CN 2011103716804 A CN2011103716804 A CN 2011103716804A CN 201110371680 A CN201110371680 A CN 201110371680A CN 102513645 A CN102513645 A CN 102513645A
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Abstract
The invention belongs to the technical field of petroleum drilling equipment, and relates to a deep water casing cutting device based on electric arc cutting. The device mainly comprises a drill rod (1), a well mouth hanger (2), a rotary motor (3), an upper centering guide (4), a wire storage barrel (5), an electrode feeding mechanism (6), a banded tool electrode (7), a lower centering guide (8) and a guide mechanism (9). In the cutting device, ground is combined with underground control, the device is put into a casing by a preset cutting depth by using the drill rod, an electric arc cutting mechanism is used for automatically feeding the banded tool electrode and driving the tool electrode to rotate, and cutting operation is performed under the actions of high temperature and high pressure generated by electric arc discharge between the tool electrode and the casing. In the invention, an electric arc processing technology is introduced to the deep water casing cutting field, so that the cutting device has the advantages of easiness, high cutting efficiency, low operation cost, and the like.
Description
Technical field
The invention belongs to the oil drilling and extracting equipment technical field, relate to a kind of deep water sleeve pipe cutter sweep based on ARC CUTTING.
Background technology
According to relevant laws and regulations, the operation life-span of offshore platform if there is not other purposes, must be discarded dismounting to after date.This just needs the special recovery instrument that cuts under water and goes operation by special operating personnel.In the dismounting of ocean platform, can being used under water, the sleeve pipe cut ratio mainly contains cumulative cutting, chemistry injection cutting, Abrasive Water Jet Machining and machine cuts than mature technique.
The cumulative cutting technique mainly is to lean on the destruction of explosive blasting that sleeve pipe is blown up, and fracture irregular, the consumption of explosive are not easy control, goes back entail dangers to marine organisms on every side, causes environmental pollution.Therefore the success rate of this method is extremely low, does not advise in the cutting of seabed sleeve pipe, using.Chemical injection cutting is to utilize the chemical agent in the cutting tool to react, and produces the chemical mordant of HTHP, and tubing string is cut off, and the method is along with the environmental protection strict demand is forbidden by national governments for a long time.The abrasive water-jet technology is that the abrasive particle of certain particle size (quartz sand, garnet, carborundum etc.) is mixed in the middle of the high-pressure water jet, utilizes the hardness and the kinetic energy erosion material surface of high speed abrasive grain, realizes the cutting to sleeve pipe.This technology is very high to the sealing requirements of diced system, needs suitable effluxvelocity during injection, and nozzle abrasion needs constantly to change than very fast.These factors have all limited the use of this cutting technique in the cutting of seabed sleeve pipe.Machine cuts is a kind of more traditional sleeve pipe cutting method, existing technological means and before 10 years difference little, and have many weak points.The machinery cutter still is apparent in view for cutting individual layer sleeve pipe benefit, but for multilayer tubing string decentraction, cutting efficiency is just lower.And vibration is bigger in the cutting process, and off-centre takes place cutter easily.
Defective to traditional cutting technique existence; The present invention relates to a kind of deep water abandoned oil casing cutting tool based on electric arc processes; Utilize that electric arc processes efficient in the EDM Technology is high, cutting force is little, can process ultrahard, the characteristics of difficult-to-machine material such as superpower, high tenacity; Be introduced in the sleeve pipe cutting, do not appear in the newspapers as yet both at home and abroad at present.
Summary of the invention
The purpose of this invention is to provide a kind of deep water sleeve pipe cutter sweep, realize efficient ARC CUTTING the deep water sleeve pipe based on ARC CUTTING.
Principle of the present invention: invented based on the deep water sleeve pipe cutter sweep of ARC CUTTING mainly by drilling rod 1, well head hanger 2, electric rotating machine 3, go up centralizer 4, storage band tube 5, electrode feed mechanism 6, banded tool-electrode 7, centralizer 8 and guiding mechanism 9 are formed down.The cutting operation process is: on job platform, be lowered into the down-hole casing appointed positions to cutter sweep of the present invention with drilling rod earlier, after desired depth, the well head hanger is seated in well in word down; Be fixedly connected with the well head head, upper and lower centralizer support open and swelling on the inwall of sleeve pipe, make whole cutter sweep and sleeve pipe centering; During cutting, the two poles of the earth of the pulse power are received respectively on sleeve pipe and the tool-electrode, under the control of servomotor; Send tool-electrode to by the electrode feed mechanism; After the distance between tool-electrode and the sleeve pipe reaches the needed distance of arc discharge, between the end of tool-electrode and sleeve pipe, produce arc discharge, the high temperature and high pressure effect meeting during discharge is melted and is degraded sleeve pipe; Tool-electrode is when being sent to continuously; Under the drive of electric rotating machine, rotate again, under the comprehensive function of these two kinds of motions, just can accomplish the arc cutting operation of sleeve pipe.
The present invention has the following advantages:
1. the ARC CUTTING technology in the employing electric machining has the working (machining) efficiency height, and the advantage that cutting force is little can be avoided marine environment is produced pollution.
2. adopt compliant tool electrode feed mechanism, but the online compensation of implementation tool loss in the process can avoid machine cuts because of tool wear, one time cutting operation needs multiple runs to change the problem of cutter, can save activity duration and operating cost.
3. take to control the mode that combines with the down-hole on the platform, the design of mechanism is simplified greatly, improved the reliability of whole cutter sweep.
Description of drawings
Fig. 1 is the structural representation of the deep water sleeve pipe cutter sweep based on ARC CUTTING of the present invention.
The specific embodiment
Referring to Fig. 1.Deep water sleeve pipe cutter sweep based on ARC CUTTING of the present invention mainly by drilling rod 1, well head hanger 2, electric rotating machine 3, go up centralizer 4, storage band tube 5, electrode feed mechanism 6, banded tool-electrode 7, centralizer 8 and guiding mechanism 9 are formed down.
Drilling rod 1 passes well head hanger 2 and links to each other with deep water sleeve pipe cutter sweep, is sent to deep water sleeve pipe cutter sweep through drilling rod 1 cutting position of down-hole; After deep water sleeve pipe cutter sweep was fed to the predetermined degree of depth, well head hanger 2 was locked at well in word; The axle of electric rotating machine 3 links to each other with electrode feed mechanism 6, drives electrode feed mechanism 6 and rotates, to realize 360 ° of cuttings to sleeve pipe; Last centralizer 4 is installed on the rotating shaft of deep water sleeve pipe cutter sweep with following centralizer 8 through centre bore; The support wheel of centralizer 4 and following centralizer 8 contacts with internal surface of sleeve pipe in the process that deep water sleeve pipe cutter sweep is lowered to; Avoid this device and internal surface of sleeve pipe to bump; Guarantee that it gets in the sleeve pipe smoothly; After deep water sleeve pipe cutter sweep is fed to the predetermined degree of depth, under the effect of locking mechanism above that of last centralizer 4 and following centralizer 8 swelling on the inwall of sleeve pipe, with the assurance cutter sweep to neutrality; Storage band tube 5 is used to store the banded tool-electrode that ARC CUTTING is used; Electrode feed mechanism 6 is used for automatic servo and sends the banded tool-electrode 7 that ARC CUTTING is used to; Guiding mechanism 9 mainly play the guiding role.During cutting, the two poles of the earth of the pulse power are received respectively on sleeve pipe and the tool-electrode, under the control of servomotor; Send tool-electrode to by the electrode feed mechanism; After the distance between tool-electrode and the sleeve pipe reaches the needed distance of arc discharge, between the end of tool-electrode and sleeve pipe, produce arc discharge, the high temperature and high pressure effect meeting during discharge is melted and is degraded sleeve pipe; Tool-electrode is when being sent to continuously; Under the drive of electric rotating machine, rotate again, under the comprehensive function of these two kinds of motions, just can accomplish the arc cutting operation of sleeve pipe.
Claims (2)
1. deep water sleeve pipe cutter sweep based on ARC CUTTING; It mainly comprises drilling rod (1), well head hanger (2), electric rotating machine (3), last centralizer (4), wire storage cylinder (5), electrode feed mechanism (6), banded tool-electrode (7), following centralizer (8) and guiding mechanism (9); It is characterized in that: drilling rod (1) passes well head hanger (2) and links to each other with deep water sleeve pipe cutter sweep; Be sent to deep water sleeve pipe cutter sweep through drilling rod (1) cutting position of down-hole; Well head hanger 2 is used to lock the well head head; The axle of electric rotating machine (3) links to each other with electrode feed mechanism (6), drives electrode feed mechanism (6) and banded tool-electrode (7) and rotates, and last centralizer (4) and following centralizer (8) are installed on the rotating shaft of deep water sleeve pipe cutter sweep through centre bore; Rise and support and guide effect; Storage sheet tube (5) is used to store the sheet tool-electrode that ARC CUTTING is used, and electrode feed mechanism (6) is used for automatic servo and sends the sheet tool-electrode (7) that ARC CUTTING is used to, and guiding mechanism (9) is used for fashionable guiding under the deep water sleeve pipe cutter sweep.
2. the deep water sleeve pipe cutter sweep based on ARC CUTTING according to claim 1; It is characterized in that: driven when sleeve pipe is sent to as automatic servo by electrode feed mechanism (6) at banded tool-electrode (7); Electric rotating machine (3) drives electrode feed mechanism (6) and banded tool-electrode (7) rotates, to realize the cutting movement of the radial and axial feeding of electric arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110371680.4A CN102513645B (en) | 2011-11-14 | 2011-11-14 | Deep water casing cutting device based on electric arc cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110371680.4A CN102513645B (en) | 2011-11-14 | 2011-11-14 | Deep water casing cutting device based on electric arc cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102513645A true CN102513645A (en) | 2012-06-27 |
| CN102513645B CN102513645B (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110371680.4A Active CN102513645B (en) | 2011-11-14 | 2011-11-14 | Deep water casing cutting device based on electric arc cutting |
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| CN (1) | CN102513645B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017084226A1 (en) * | 2015-11-19 | 2017-05-26 | 北京美高科技发展有限公司 | Cable-type electrohydraulic control pipe cutting tool |
| WO2017219454A1 (en) * | 2016-06-22 | 2017-12-28 | 深圳市樊溪电子有限公司 | Combined cutting device and method using high-pressure liquid jetting and chemical methods |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5481149A (en) * | 1977-12-13 | 1979-06-28 | Agency Of Ind Science & Technol | Oxygen arc cutting of steel tube under water |
| US4162383A (en) * | 1975-12-24 | 1979-07-24 | Agency Of Industrial Science & Technology | Oxy-arc apparatus for cutting inside a pipe |
| JPS54128461A (en) * | 1978-03-30 | 1979-10-05 | Agency Of Ind Science & Technol | Pipe cutter |
| JPH0313330U (en) * | 1989-06-23 | 1991-02-12 | ||
| JPH0550234A (en) * | 1991-08-27 | 1993-03-02 | Kawasaki Steel Corp | Device for underwater cutting of steel material |
-
2011
- 2011-11-14 CN CN201110371680.4A patent/CN102513645B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162383A (en) * | 1975-12-24 | 1979-07-24 | Agency Of Industrial Science & Technology | Oxy-arc apparatus for cutting inside a pipe |
| JPS5481149A (en) * | 1977-12-13 | 1979-06-28 | Agency Of Ind Science & Technol | Oxygen arc cutting of steel tube under water |
| JPS54128461A (en) * | 1978-03-30 | 1979-10-05 | Agency Of Ind Science & Technol | Pipe cutter |
| JPH0313330U (en) * | 1989-06-23 | 1991-02-12 | ||
| JPH0550234A (en) * | 1991-08-27 | 1993-03-02 | Kawasaki Steel Corp | Device for underwater cutting of steel material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017084226A1 (en) * | 2015-11-19 | 2017-05-26 | 北京美高科技发展有限公司 | Cable-type electrohydraulic control pipe cutting tool |
| WO2017219454A1 (en) * | 2016-06-22 | 2017-12-28 | 深圳市樊溪电子有限公司 | Combined cutting device and method using high-pressure liquid jetting and chemical methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102513645B (en) | 2015-06-03 |
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