CN103510902A - Oil pipe cutting device - Google Patents
Oil pipe cutting device Download PDFInfo
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- CN103510902A CN103510902A CN201210210059.4A CN201210210059A CN103510902A CN 103510902 A CN103510902 A CN 103510902A CN 201210210059 A CN201210210059 A CN 201210210059A CN 103510902 A CN103510902 A CN 103510902A
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- piston
- oil pipe
- cap
- housing
- hydraulic power
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Abstract
The invention discloses an oil pipe cutting device which comprises a shell and at least two blades which are arranged on the shell and used for relatively clamping and cutting an oil pipe. Hydraulic power devices which provide cutting power for the blades are arranged at the rear ends of the blades, and each hydraulic power device comprises a piston and an end cover. The pistons are connected to the rear ends of the blades, the end covers are in threaded connection on the shell, a sealing closed piston cavity is formed by surrounding the shell, the end covers and the pistons, liquid inlets and liquid outlets are formed in the end covers, the end covers are connected with hydraulic pipelines, and the pistons drive the blades to conduct the telescopic motion. By the adoption of the hydraulic power mode, in the power aspect, the aims that under the severe environment of the blowout site, the inflammable hidden danger operation does not exist, the remote control is achieved, and the control operation is easy and convenient are achieved. The personal safety of an operator in the site is ensured, meanwhile, the oil pipe is effectively cut, the working time of oil pipe cutting is shortened, and the oil pipe cutting device has the remarkable economic benefits and social benefits.
Description
Technical field
The present invention relates to the workover tool of petroleum industry, specifically a kind of for robbing the oil pipe cutter of spray during operation.
Background technology
In oilfield development process, due to reasons such as formation factor, improper measures, lawless person's destruction and wellhead assembly are aging, blowout out of control phenomenon happens occasionally, and wherein oil pipe ejection top is to oil pumper, now rob spray and must first cut off oil pipe, preventer ability seat is to well head.Oil pipe is not disposed, and wholely rob spray operation and just cannot carry out, and the dealing with improperly of oil pipe is prone to and flies to manage, and causes casualties.
At present, used oil tubing cutter tool mostly is thermal cutting, has and make fuel gas produce the danger of blast in cutting process; Cold cutting device there is no and adapts to the matured product that well site is used, and shows that instrument failure rate is high, complex structure.
In view of this, for the problems referred to above, propose a kind of reasonable in design and effectively improve the oil pipe cutter of above-mentioned disappearance.
Summary of the invention
The object of the present invention is to provide oil pipe cutter, realize no-spark cold cut and cut oil pipe, prevent there is fuel gas in cutting process, produce blast; Prevent from altering in tubing string cut-out afterwards, cut away upper end oil pipe, bottom tubing string likely continues up, and down-hole string, to oil pumper, is controlled in top; The Long-distance Control of hydraulic power implementation procedure, minimizing operating personnel's potential safety hazard; Improve blade structure and material, increase application life.
In order to reach above-mentioned purpose, the invention provides oil pipe cutter, comprise housing and be arranged at least two blades that are used for relatively clamping and cutting oil pipe on housing, described blade rear end arranges the hydraulic power unit that promising blade provides cutting power; Described hydraulic power unit comprises and is connected to the piston of blade rear end and is threaded connection the end cap on housing, described housing, end cap, piston enclose each other and form seal closure plunger shaft, liquid in-out mouth connecting fluid pressure pipeline are set on end cap, and described piston driving blade is done stretching motion.
In the seal closure plunger shaft of described piston rear end, be provided with piston reset device, this piston reset device comprises and is threaded connection at the connecting rod of piston rear end and is enclosed within the back-moving spring on connecting rod, periphery at back-moving spring is provided with stop collar, and the two ends of described back-moving spring are respectively arranged with baffle ring and baffle plate.
On described housing, be also connected with for making cutter to oil pipe cleavage flexible hydraulic power unit back and forth, this hydraulic power unit comprises the piston rod being bolted on housing, the other end of described piston rod gos deep in inner cylinder liner, described inner cylinder liner outside is outer cylinder sheath, is disposed with piston cap and standby cap in the bottom of outer cylinder sheath; Described piston rod, inner cylinder liner, outer cylinder sheath, piston cap, standby cap form seal closure plunger shaft; Described inner cylinder liner, outer cylinder sheath, piston cap are provided with liquid in-out mouth connecting fluid pressure pipeline.
On the interconnective bolt of described housing and piston rod, be connected with limiting plate simultaneously.
Compared to prior art, the present invention, when cutting oil pipe, is connected with hydraulic system end cap, inner cylinder liner, outer cylinder sheath, piston cap with hydraulic line, bring well site into.After fixing, locating, by operating personnel's Long-distance Control hydraulic system cutting oil pipe, can prevent there is fuel gas in cutting process, produce blast; Prevent from altering in tubing string cut-out afterwards, cut away upper end oil pipe, bottom tubing string likely continues up, and down-hole string, to oil pumper, is controlled in top; The Long-distance Control of hydraulic power implementation procedure, minimizing operating personnel's potential safety hazard; Improve blade structure and material, increase application life.Be applicable to the oil pipe cutting construction in oil well repairing operation.
In a word, the present invention has adopted the mode of hydraulic power, and realize power aspect and without inflammable hidden danger, operate under the adverse circumstances at blowout scene, Long-distance Control, control operation is simple and convenient.When guaranteeing site operation personnel's personal safety, effectively cut oil pipe, shortened the activity duration of cutting oil pipe, there is significant economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil pipe cutter of the present invention.
In figure: 1-end cap; 2-blade; 3-baffle ring; 4-baffle plate; 5-connecting rod; 6-back-moving spring; 7-stop collar; 8-piston; 9-housing; 10-bolt; 11-limiting plate; 12-piston rod; 13-inner cylinder liner; 14-outer cylinder sheath; 15-piston cap; 16-is for cap.
The specific embodiment
Relevant detailed description of the present invention and technology contents, coordinate accompanying drawing to be described as follows, yet accompanying drawing only provides the use of reference with explanation, is not used for the present invention to be limited.
Shown in Fig. 1, oil pipe cutter, comprises housing 9 and is arranged at least two blades 2 that are used for relatively clamping and cutting oil pipe on housing, described blade rear end arranges the hydraulic power unit that promising blade provides cutting power; Described hydraulic power unit comprises and is connected to the piston 8 of blade rear end and is threaded connection the end cap 1 on housing, blade 2 is embedded on piston 8, described housing 9, end cap 1, piston 8 enclose each other and form seal closure plunger shaft, liquid in-out mouth connecting fluid pressure pipeline are set on end cap 1, and described piston 8 band cutting blades 2 are done stretching motion.
In the seal closure plunger shaft of piston 8 rear ends, be provided with piston reset device, this piston reset device comprises and is threaded connection at the connecting rod 5 of piston rear end and is enclosed within the back-moving spring 6 on connecting rod, in the periphery of back-moving spring, be provided with stop collar 7, the two ends of described back-moving spring are respectively arranged with baffle ring 3 and baffle plate 4.Stop collar 7 articulates with baffle ring 3, and connecting rod 5 is threaded with piston 8, and connecting rod 5 articulates with baffle plate 4, and baffle ring 3 and baffle plate 4 are with back-moving spring 6 support and connection.
On housing, be also connected with for making cutter to oil pipe cleavage flexible hydraulic power unit back and forth, this hydraulic power unit comprises by bolt 10 and is connected to the piston rod 12 on housing 9, the other end of described piston rod gos deep in inner cylinder liner 13, described inner cylinder liner outside is outer cylinder sheath 14, is disposed with piston cap 15 and standby cap 16 in the bottom of outer cylinder sheath; Standby cap 16 is threaded with outer cylinder sheath 14.Described piston rod, inner cylinder liner, outer cylinder sheath, piston cap, standby cap form seal closure plunger shaft; Described inner cylinder liner, outer cylinder sheath, piston cap are provided with liquid in-out mouth connecting fluid pressure pipeline.On the interconnective bolt of described housing and piston rod, be connected with limiting plate 11 simultaneously.
The detailed process of cutting oil pipe is described below:
Do homework, end cap 1, inner cylinder liner 13, outer cylinder sheath 14, piston cap 15 are connected with hydraulic line with hydraulic system, bring well site into.After fixing, locating, by hydraulic system, provide power, double-stage hydraulic cylinder piston rod 12, inner cylinder liner 13 are stretched out to well head direction, the targeting part of housing 9 is introduced oil pipe between two blades 2, by hydraulic system, provide power, make piston 8 drive two blades 2 relatively to stretch out, cut off after oil pipe, back-moving spring 6 promotes baffle ring 3, baffle plate 4, makes piston 8, blade 2 reclaim and reset.The mode that has adopted wedging cutting, high temperature, Gao Re and the spark effect of having avoided the modes such as high-speed grinding cutting to produce, shear with slow deformation, realizes no-spark cutting, reaches no-spark cutting object simple to operate.
The foregoing is only preferred embodiment of the present invention, non-in order to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (4)
1. oil pipe cutter, is characterized in that, comprises housing and is arranged at least two blades that are used for relatively clamping and cutting oil pipe on housing, and described blade rear end arranges the hydraulic power unit that promising blade provides cutting power; Described hydraulic power unit comprises and is connected to the piston of blade rear end and is threaded connection the end cap on housing, described housing, end cap, piston enclose each other and form seal closure plunger shaft, liquid in-out mouth connecting fluid pressure pipeline are set on end cap, and described piston driving blade is done stretching motion.
2. oil pipe cutter according to claim 1, it is characterized in that, in the seal closure plunger shaft of described piston rear end, be provided with piston reset device, this piston reset device comprises and is threaded connection at the connecting rod of piston rear end and is enclosed within the back-moving spring on connecting rod, periphery at back-moving spring is provided with stop collar, and the two ends of described back-moving spring are respectively arranged with baffle ring and baffle plate.
3. oil pipe cutter according to claim 1, it is characterized in that, on described housing, be also connected with for making cutter to oil pipe cleavage flexible hydraulic power unit back and forth, this hydraulic power unit comprises the piston rod being bolted on housing, the other end of described piston rod gos deep in inner cylinder liner, described inner cylinder liner outside is outer cylinder sheath, is disposed with piston cap and standby cap in the bottom of outer cylinder sheath; Described piston rod, inner cylinder liner, outer cylinder sheath, piston cap, standby cap form seal closure plunger shaft; Described inner cylinder liner, outer cylinder sheath, piston cap are provided with liquid in-out mouth connecting fluid pressure pipeline.
4. oil pipe cutter according to claim 3, is characterized in that, on the interconnective bolt of described housing and piston rod, is connected with limiting plate simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210059.4A CN103510902A (en) | 2012-06-25 | 2012-06-25 | Oil pipe cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210059.4A CN103510902A (en) | 2012-06-25 | 2012-06-25 | Oil pipe cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103510902A true CN103510902A (en) | 2014-01-15 |
Family
ID=49894267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210210059.4A Pending CN103510902A (en) | 2012-06-25 | 2012-06-25 | Oil pipe cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103510902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969758A (en) * | 2021-10-25 | 2022-01-25 | 北方斯伦贝谢油田技术（西安）有限公司 | Oil pipe tubular column cutting device with pressure balancer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257902A (en) * | 1925-09-05 | 1927-09-29 | Tiefbohrtechnik Und Maschb Ag | An improved method of shutting off or throttling the flowing out of fluids, vapours or gases from bore or well tubes |
| US4582293A (en) * | 1982-01-06 | 1986-04-15 | Koomey Blowout Preventers, Inc. | Hydraulically operated valves |
| US5074355A (en) * | 1990-08-10 | 1991-12-24 | Masx Energy Services Group, Inc. | Section mill with multiple cutting blades |
| CN201430369Y (en) * | 2009-07-09 | 2010-03-24 | 中国石油集团川庆钻探工程有限公司 | Hydraulic shear device for petroleum logging and perforated cables |
| CN201567993U (en) * | 2009-11-30 | 2010-09-01 | 扬州诚创石油机械有限公司 | Pumping rod cutter |
| CN201801346U (en) * | 2010-08-13 | 2011-04-20 | 北京纽希液压技术研究所 | Novel hydraulic jack |
| CN201943620U (en) * | 2011-02-10 | 2011-08-24 | 天合石油集团汇丰石油装备股份有限公司 | Multilayer casing pipe cutting knife |
| CN102322234A (en) * | 2011-10-09 | 2012-01-18 | 山东正元地质资源勘查有限责任公司烟台分公司 | Sliding block guiding hydraulic cutting knife |
| CN202249880U (en) * | 2011-09-10 | 2012-05-30 | 山东临朐乾成石油机械有限公司 | Pipe shearing device for oil field |
-
2012
- 2012-06-25 CN CN201210210059.4A patent/CN103510902A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257902A (en) * | 1925-09-05 | 1927-09-29 | Tiefbohrtechnik Und Maschb Ag | An improved method of shutting off or throttling the flowing out of fluids, vapours or gases from bore or well tubes |
| US4582293A (en) * | 1982-01-06 | 1986-04-15 | Koomey Blowout Preventers, Inc. | Hydraulically operated valves |
| US5074355A (en) * | 1990-08-10 | 1991-12-24 | Masx Energy Services Group, Inc. | Section mill with multiple cutting blades |
| CN201430369Y (en) * | 2009-07-09 | 2010-03-24 | 中国石油集团川庆钻探工程有限公司 | Hydraulic shear device for petroleum logging and perforated cables |
| CN201567993U (en) * | 2009-11-30 | 2010-09-01 | 扬州诚创石油机械有限公司 | Pumping rod cutter |
| CN201801346U (en) * | 2010-08-13 | 2011-04-20 | 北京纽希液压技术研究所 | Novel hydraulic jack |
| CN201943620U (en) * | 2011-02-10 | 2011-08-24 | 天合石油集团汇丰石油装备股份有限公司 | Multilayer casing pipe cutting knife |
| CN202249880U (en) * | 2011-09-10 | 2012-05-30 | 山东临朐乾成石油机械有限公司 | Pipe shearing device for oil field |
| CN102322234A (en) * | 2011-10-09 | 2012-01-18 | 山东正元地质资源勘查有限责任公司烟台分公司 | Sliding block guiding hydraulic cutting knife |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969758A (en) * | 2021-10-25 | 2022-01-25 | 北方斯伦贝谢油田技术（西安）有限公司 | Oil pipe tubular column cutting device with pressure balancer |
| CN113969758B (en) * | 2021-10-25 | 2023-10-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Oil pipe tubular column cutting device with pressure balancer |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |