CN102561975A - Lifting pressurized well-repairing technology in closed oil pipe - Google Patents

Lifting pressurized well-repairing technology in closed oil pipe Download PDF

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Publication number
CN102561975A
CN102561975A CN2012100009026A CN201210000902A CN102561975A CN 102561975 A CN102561975 A CN 102561975A CN 2012100009026 A CN2012100009026 A CN 2012100009026A CN 201210000902 A CN201210000902 A CN 201210000902A CN 102561975 A CN102561975 A CN 102561975A
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CN
China
Prior art keywords
oil pipe
lifting
band
pressure
well
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.)
Granted
Application number
CN2012100009026A
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Chinese (zh)
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CN102561975B (en
Inventor
徐迎新
孙虎
周丰
刘国良
张冕
韩文哲
牛俊峰
邓继学
魏建荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd filed Critical Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority to CN201210000902.6A priority Critical patent/CN102561975B/en
Publication of CN102561975A publication Critical patent/CN102561975A/en
Application granted granted Critical
Publication of CN102561975B publication Critical patent/CN102561975B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a lifting pressurized well-repairing technology in a closed oil pipe. The technology at least comprises the following steps: 1) mounting equipment, namely, mounting a lifting pressurized well-repairing device in the closed oil pipe; 2) fishing an oil pipe hanger under pressure; 3) lifting a pipe strand in the well under pressure; 4) holding a detaching buckle under pressure; 5) holding and lifting for a small distance under pressure; 6) dividing high-pressure and low-pressure chambers; and 7) lifting the oil pipe under normal pressure. According to the technology, a pressurized unplugged oil pipe in an oil-gas well is actively lifted up and pressed down in the high-pressure chamber of the device; the operations of holding the oil pipe in the high-pressure chamber and tools in the well and assembling and disassembling the buckle are performed according to an operation requirement; the separation of the high pressure and low pressure in the chamber is realized; the normal-pressure lifting/drilling operation can be completed by an operator at the well head; and the problem of safety lifting/ drilling operation for the unplugged pipe strand in pressurized operation in the oil-gas well is efficiently solved.

Description

The lifting band is pressed workover process in the airtight oil pipe
Technical field
The present invention relates to oil gas well band and press the workover process technology, the lifting band is pressed workover process in particularly a kind of airtight oil pipe.Belong to the exploitation of oil-gas field field of mechanical technique.
Background technology
In recent years along with the increasing of oil-gas field development dynamics; It is increasing that oil gas well Operating Pressure accounts for the workload ratio of underground work; And corresponding Operating Pressure equipment tool develops hysteresis relatively; Existing Operating Pressure equipment can not realize that pipe string in the unplugged well is carried out airtight band pressure to remove, and there is greater risk in operation process, can't really realize the essential safety of Operating Pressure.
At present; The Operating Pressure equipment that uses in the oil gas field all will stop up the oil pipe in the well, and this is the first step of carrying out Operating Pressure, and the oil pipe in the well is through for many years flow-induced corrosion; Serious fouling, perforation, burn into having occurred carries out oil pipe and stops up and can not once finish the work; Though and the type of blanking plug, model are different, can not be useful in all construction wells, construct with bigger suffering and risk to Operating Pressure.Be both; The well head operating personnel partly are being with the work of pressure ring border; At any time be faced with well inner high voltage fluid and go out the risk of well head, personnel's safety can not must have the oil gas water of high pressure to rush at the ground staff from being guaranteed in essence; Make the injured or poisoning of operating personnel, and present equipment can't be avoided this fatal shortcoming.Thus, it is efficiently a kind of to press for exploitation, can accurately control and realize to hang on request with the oil pipe without stopping up in the pressure device, and airtight band is pressed lifting or power set that press down and technology thereof.
Summary of the invention
The purpose of this invention is to provide lifting band pressure workover process in a kind of airtight oil pipe; Can not stop up oil pipe initiatively lifting and pressing down in the high pressure chest of device with pressure in the oil gas well; According to the operation needs; In high pressure chest, instrument in oil pipe and the well set upright and on, the shackle operation, the high-low pressure separation makes the well head operating personnel realize the normal pressure round trip in implement device the chamber in.Well solved the safely tripping operation of not stopping up the pipe string in the well of oil gas well Operating Pressure.
The technical solution adopted for the present invention to solve the technical problems is: design lifting band pressure workover process in a kind of airtight oil pipe, it is characterized in that: comprise the steps: at least
Step 1, equipment are installed, that is: the installation of lifting band pressure well repairing device in the airtight oil pipe;
Step 2, band are pressed and are salvaged boll-weevil hanger;
Step 3, band are pressed pipe string in the lifting well;
Step 4, band are pressed and are set upright shackle;
Step 5, band are pressed small distance to set upright and are carried;
Step 6, cut apart high pressure-low pressure chamber;
Step 7, normal pressure play oil pipe.
The lifting band is pressed well repairing device in the described airtight oil pipe, from top to bottom successively order by wellhead platform operation window, endless belt press working preventer, blowout prevention band press operation chamber, rotation set upright lifting-up device, balance four-way pipe nipple, rotation set upright shackle device, band press flashboard in the full envelope chamber, airtight in device under the elevates, seal internal slip and be threaded and form.
Lifting band pressure well repairing device latus rectum is 180mm in the described airtight oil pipe, 60 tons of maximum lifting capacities, and maximum presses down 40 tons of abilities, peak torque 3000NM; Maximum seal construction pressure 35MPa.
The lifting band presses well repairing device to be fit to construction medium oil gas aqueous medium in the described airtight oil pipe.
Described endless belt presses working preventer to press working preventer for the 35MPa endless belt.
Advantage of the present invention is: through adopt rotation in the contrive equipment set upright lifting-up device with oil pipe to handling one segment distance up and down; Make oil pipe in the Operating Pressure dress accomplish on request rotation, on put playing function, well solved the interior oil pipe regular motion of device lumen of oil gas well Operating Pressure Set upright the shackle device through adopting the rotation in the contrive equipment; The drive oil pipe is rotated; Accomplish oil in the high pressure chest in high pressure chest, carry out oil pipe on buckle the shackle action, well realized oil pipe and the connection and the disassembling function of the interior instrument of other well in the device lumen of oil gas well Operating Pressure; Through adopting device under the airtight interior elevates in the contrive equipment; Can be with pressing automatic lifting without the oil pipe band that stops up in the airtight high pressure chest in the band pressure device and pressing down; This process circulation is carried out; Can the oil pipe that reach in the oil gas well in the band pressure device high pressure chest promoted continuously and transfer, the not kill-job band pressure of accomplishing the high-pressure well inner oil tube removes the operation of tool pipe string, is that the band pressure removes the power set without the oil pipe that stops up in high pressure chest.In construction, press the application of well repairing device through lifting band in the airtight oil pipe; Can hang on request with the oil pipe in the pressure device without stopping up; Can make the oil pipe in the Operating Pressure dress accomplish safe round trip on request, well solve airtight hyperbaric environment in the device lumen of oil gas well Operating Pressure without the safe rountrip of the oil pipe that stops up.High-low pressure is separated in the ability implement device chamber, makes the well head operating personnel realize the normal pressure round trip.A whole set of equipment latus rectum 180mm, 60 tons of maximum lifting capacities, maximum presses down 40 tons of abilities, peak torque 3000NM.Maximum seal construction pressure 35MPa is fit to construction medium oil gas aqueous medium.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the present invention is described further, but not as to qualification of the present invention.
Fig. 1 is an embodiment of the invention flow chart;
Fig. 2 is the structural representation that the interior lifting band of airtight oil pipe used in Fig. 1 flow process is pressed well repairing device.
Among the figure: 1, wellhead platform operation window; 2, working preventer is pressed in the endless belt; 3, blowout prevention band press operation chamber; 4, lifting-up device is set upright in rotation; 5, balance four-way pipe nipple; 6, the shackle device is set upright in rotation; 7, band is pressed flashboard in the full envelope chamber; 8, device under the airtight interior elevates; 9, sealing internal slip.
The specific embodiment
The structure that is not described in detail in an embodiment, its structure is identical with existing known structure.
Embodiment 1
The lifting band is pressed workover process in the airtight oil pipe, it is characterized in that: comprise the steps: at least
Step 1, equipment are installed, that is: the installation of lifting band pressure well repairing device in the airtight oil pipe;
Step 2, band are pressed and are salvaged boll-weevil hanger;
Step 3, band are pressed pipe string in the lifting well;
Step 4, band are pressed and are set upright shackle;
Step 5, band are pressed small distance to set upright and are carried;
Step 6, cut apart high pressure-low pressure chamber;
Step 7, normal pressure play oil pipe.
Embodiment 2
Shown in accompanying drawing 1; When carrying out oil gas well Operating Pressure, through adopting this technology, can not stop up oil pipe initiatively lifting and pressing down in the high pressure chest of device with pressure in the oil gas well; According to the operation needs; In high pressure chest, instrument in oil pipe and the well set upright and on, the shackle operation, the high-low pressure separation makes the well head operating personnel realize the normal pressure round trip in implement device the chamber in.
Step is explained in detail as follows:
Step 1, equipment are installed, that is: the installation of lifting band pressure well repairing device in the airtight oil pipe;
1), the lifting band is pressed well repairing device in inspection and the mounted airtight oil pipe of pressure testing;
2), at well head the OIH pipe is carried out stifledly temporarily with temporarily stifled instrument in the well head oil pipe, make oil pipe keep stifled temporarily state at short notice, the well head oil pressure is 0;
3), set up operating platform, connect lifting band pressure well repairing device and stable in the airtight oil pipe with scaffold at well head; Connect the interior lifting band of the airtight oil pipe of well head and press the hydraulic line of well repairing device and Hydraulic Station, oil pipe lifting mast and platform ladder and the slideway of escaping are installed;
4), set up mast, mast base is sitting on the well head base for supporting, and sets up respectively to four direction with four wire rope mast tops, thereby stablizes mast;
5), put hydraulic power sled, the hydraulic line that connection is communicated with well head.
Step 2, band are pressed and are salvaged boll-weevil hanger;
Band is pressed and is taken out the temporary block apparatus of oil pipe, boll-weevil hanger on apparatus platform.
Step 3, band are pressed pipe string in the lifting well;
Adopt the band densification close under the elevates device 8 in the high pressure chest of blowout prevention band press operation chamber 3 the winding shaft inner oil tube to setting height.
Step 4, band are pressed and are set upright shackle;
The high pressure chest internal upper part oil pipe that adopts the rotation of band pressuring oil pipe to set upright 6 pairs of blowout prevention bands of shackle device press operation chamber 3 carries out shackle, makes it break away from the lower tube string.
Step 5, band are pressed small distance to set upright and are carried;
Adopt the rotation of band pressuring oil pipe to set upright lifting-up device 4 with carrying in first oil pipe short distance in the high pressure chest of blowout prevention band press operation chamber 3.
Step 6, cut apart high pressure-low pressure chamber;
Close the interior full seal apparatus of high pressure chest of well head blowout prevention band press operation chamber 3, cut apart the high-low pressure zone.
Step 7, normal pressure play oil pipe;
Open the low pressure chamber sealing import of well head blowout prevention band press operation chamber 3, the oil pipe in the low pressure chamber is proposed.
Step 8, close the low pressure chamber import of blowout prevention band press operation chamber 3, carry out pressure balance.
Step 9, open the full seal apparatus of high pressure chest of blowout prevention band press operation chamber 3, carry out the lifting of next root oil pipe.
Step 10, repeat above step, realize that the airtight safety of OIH pipe pulls out of hole.
Step 11, device going down process and trip-out process reversed in order, principle is identical.
As shown in Figure 2; The lifting band is pressed well repairing device in the described airtight oil pipe, from top to bottom successively order by wellhead platform operation window 1, endless belt press working preventer 2, blowout prevention band press operation chamber 3, rotation set upright lifting-up device 4, balance four-way pipe nipple 5, rotation set upright shackle device 6, band press flashboard 7 in the full envelope chamber, airtight in device 8 under the elevates, seal internal slip 9 and be threaded and form.The lifting band is pressed the latus rectum 180mm of well repairing device in the described airtight oil pipe, 60 tons of the maximum lifting capacities of the interior lifting band pressure of described airtight oil pipe well repairing device, and maximum presses down 40 tons of abilities, peak torque 3000NM, maximum seal construction pressure 35MPa.Be fit to construction medium oil gas aqueous medium.Described endless belt presses working preventer 2 to press working preventer for the 35MPa endless belt.
The lifting band is pressed the operating principle of well repairing device in the airtight oil pipe of the present invention
Application through this process unit can be hung with the oil pipe without stopping up in the pressure device on request; And airtight band is pressed lifting or is pressed down; Through the stroke of device under the elevates in airtight, can be with pressing automatic lifting without the oil pipe band that stops up in the airtight high pressure chest in the band pressure device and pressing down, this process circulation is carried out; Can the oil pipe that reach in the oil gas well in the band pressure device high pressure chest promoted continuously and transfer, the not kill-job band pressure of accomplishing the high-pressure well inner oil tube removes the operation of tool pipe string.Application through this instrument can make the oil pipe in the Operating Pressure dress accomplish safe round trip on request, has well solved airtight hyperbaric environment in the device lumen of oil gas well Operating Pressure without the rountrip of the oil pipe that stops up.
Related technology in the step among the present invention
(1) lift technique is set upright in the rotation of band pressuring oil pipe
The ability of this technology will be set upright between two parties with the oil pipe in the pressure device; The inner core chamber can be rotated with oil pipe; And through specific mechanism; With oil pipe to handling one segment distance up and down, the application through this instrument can make the oil pipe in the Operating Pressure dress accomplish on request rotation, on put playing function, well solved the interior oil pipe regular motion of device lumen of oil gas well Operating Pressure.Work internal diameter 30-180mm can provide the clamping oil pipe handling distance of 300-500mm, handling weight 200-500kg with the passive rotation of oil pipe.
Operating principle: adopt 35MPa endless belt pressure working preventer manufacturing process manufacturing installation shell and be connected compass, adopt rotating blowout preventer packing element technology that drilling tool is set upright between two parties, and can passively rotate.Adopt female packing element that will revolve after the screw rod principle will be held tightly to promote or transfer, and drive with hydraulic power.
(2) Operating Pressure band pressuring oil pipe is set upright rotation and is gone up the shackle technology
This technology can be set upright the time placed in the middle with the oil pipe in the pressure device; Interior its specific structure of equipment and instrument can drive oil pipe and be rotated; Accomplishing the button shackle of going up of high pressure chest inner oil tube moves; Application through this instrument can make the oil pipe in the Operating Pressure dress accomplish two oil pipes shackle function on the box cupling position on request; Other instrument in the well also can accomplished simultaneously connects the function with shackle in high pressure chest, well solved the interior oil pipe of the device lumen of oil gas well Operating Pressure and the connection and the disassembling function of the interior instrument of other well.Work internal diameter 30-180mm can clamping oil pipe oil pipe active rotation, and the last shackle moment of torsion of 3000NM is provided, and passively moves up and down apart from 0-100mm with drilling tool.
Operating principle: adopt 35MPa endless belt pressure working preventer manufacturing process manufacturing installation shell and be connected compass, shackle hydraulic tongs art is set upright drilling tool between two parties on the employing oil pipeline, but and active rotation.Pincers tooth after the free rod principle of employing will be held tightly carries out passive lifting or transfers, and drives with hydraulic power.
(3) Lifting Technique in the airtight oil pipe
This technology can hang with the oil pipe without stopping up in the pressure device on request; And airtight band is pressed lifting or is pressed down; Stroke through device under the elevates in airtight; Can be with pressing automatic lifting without the oil pipe band that stops up in the airtight high pressure chest in the band pressure device and pressing down, this process circulation is carried out, and can the oil pipe that reach in the oil gas well in the band pressure device high pressure chest promoted continuously and transfer; The not kill-job band pressure of accomplishing the high-pressure well inner oil tube removes the operation of tool pipe string, is that band is pressed the power set that remove without the oil pipe that stops up in high pressure chest.This equipment has 60 tons airtight lifting capacity, and 40 tons drilling tool presses down ability, and entrained poppet can realize that drilling tool in the well of 60 tons of weights is carried out not damaged catches and grab and hang.Lifting stroke 0-3 rice in airtight.
Operating principle: adopt the 35MPa endless belt to press working preventer manufacturing process manufacturing installation shell and is connected compass, adopt bi-directional slip that oil pipe is set upright suspension placed in the middle, adopt initiatively nut rotation, the stator principle of moving about, drain line under the lifting.Drive with hydraulic power.
(4) well head weight support+mast oil pipe removes technology
If the weight of drilling tool all is carried on the well head tap in the weight of well head Operating Pressure equipment and the well, and is bigger to the injury of well head tap, and the entire job device is also unstable; To above situation, researched and developed the full support technology of wellhead equipment, the weight of wellhead equipment and operating platform can be absorbed by supported device fully; And support at well head, simultaneously, braced structures has also taken into full account the principle of well head Operating Pressure; Below the interior lifting device of well head; Increase and adorned four support posts, the weight of drilling tool in the well also has been loaded on the well head braced structures, thereby has realized whole process protection well head tap; Bracing or strutting arrangement can provide the wellhead assembly support force of 5-8 ton, drilling tool support force in 50 tons the well.
Consider the needs of operation simultaneously, designed the oil pipe mast that makes a trip, adopt this instrument; Can oil pipe be lifted by crane as required and put into well or trip out from well, simultaneously, this mast also can be the well head operating platform and hangs oneself and send construction tool; 25 meters of mast heights, effectively hoisting weight is 2 tons, and mast base is installed on the basis of well head bracing or strutting arrangement; Adopt two bolts to be connected to wellhead assembly and stablize, draw four road guy wires auxiliary stable in mast tops simultaneously.
(5) skid hydraulic power+microelectronics logic control technology
The power of this technology is hydraulic power; Well head is respectively installed the hydraulic power that provides through hydraulic power source and the mast that hoists provides power; Power resources are the independent skid power set that are provided with; The skid power set mainly contain Diesel engine, hydraulic pressure power takeoff, and hydraulic oil container, fuel tank, heat abstractor, control device composition that linked parking device, control device are formed and do not wanted can provide lasting stable hydraulic power for well head Operating Pressure device.The effective output that device is provided with is 80-100KW, and diesel is a 200KW Yi Weike motor, the inferior speed changer of Ali.
Complete equipment has been selected microelectronics logic control technology for use simultaneously, induction of well intrinsic parameter and data transmission set has been installed, through the precise information collection and the calculating of computer in each wellhead assembly relevant position; Can the duty of equipment be carried out appropriate calculating and simulation, and send work request, respond if obtain to operating personnel; Computer can be controlled corresponding hydraulic control valve member and carry out round trip, has lowered the error rate of equipment, has improved the device security workability; When carrying out operation; Can far control the various operations of equipment,, all concentrate in the operating room each operating position; All operate and accomplish, guarantee the accuracy and the security reliability of operating by a people.

Claims (5)

1. the lifting band is pressed workover process in the airtight oil pipe, it is characterized in that: comprise the steps: step 1, equipment installation at least, that is: the installation of lifting band pressure well repairing device in the airtight oil pipe; Step 2, band are pressed and are salvaged boll-weevil hanger; Step 3, band are pressed pipe string in the lifting well; Step 4, band are pressed and are set upright shackle; Step 5, band are pressed small distance to set upright and are carried; Step 6, cut apart high pressure-low pressure chamber; Step 7, normal pressure play oil pipe.
2., the lifting band is pressed workover process in the airtight oil pipe according to claim 1; It is characterized in that: the lifting band is pressed well repairing device in the described airtight oil pipe, and order presses working preventer (2), blowout prevention band press operation chamber (3), rotation to set upright lifting-up device (4), balance four-way pipe nipple (5), rotation by wellhead platform operation window (1), endless belt to set upright shackle device (6), band and press device (8) under flashboard (7) in the full envelope chamber, the airtight interior elevates, seal internal slip (9) and be threaded and form successively from top to bottom.
3. the lifting band is pressed workover process in the airtight oil pipe according to claim 1, it is characterized in that: lifting band pressure well repairing device latus rectum is 180mm in the described airtight oil pipe, 60 tons of maximum lifting capacities, and maximum presses down 40 tons of abilities, peak torque 3000NM; Maximum seal construction pressure 35MPa.
4. the lifting band is pressed workover process in the airtight oil pipe according to claim 1, it is characterized in that: the lifting band presses well repairing device to be fit to construction medium oil gas aqueous medium in the described airtight oil pipe.
5. the lifting band is pressed workover process in the airtight oil pipe according to claim 2, it is characterized in that: described endless belt presses working preventer (2) to press working preventer for the 35MPa endless belt.
CN201210000902.6A 2012-01-04 2012-01-04 Lifting pressurized well-repairing technology in closed oil pipe Expired - Fee Related CN102561975B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN102561975B CN102561975B (en) 2014-08-20

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573224A (en) * 2013-10-21 2014-02-12 联合石油天然气投资有限公司 Technology for fishing oil under pressure
CN104329040A (en) * 2014-08-20 2015-02-04 中国石油化工股份有限公司 Long well segment perforating gun lifting process and special device
CN104420841A (en) * 2013-08-30 2015-03-18 中国石油天然气股份有限公司 Method for lifting and lowering down production string with pressure
CN111119758A (en) * 2020-02-10 2020-05-08 于燕 Use method of self-balancing under-pressure operation device adopting directional slips

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CN2512899Y (en) * 2001-11-26 2002-09-25 辽河石油勘探局兴隆台工程技术处 High pressure oil-gas water well operation device with pressure
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CN200955362Y (en) * 2006-04-21 2007-10-03 阜新驰宇石油机械有限公司 Fully-automatic hot operation machine
CN101059064A (en) * 2006-04-21 2007-10-24 阜新驰宇石油机械有限公司 Full-automatic pressurized operation machine
CN201087717Y (en) * 2007-09-18 2008-07-16 河北华北石油荣盛机械制造有限公司 Integral high-pressure oil water well operation device under pressure
CN201443339U (en) * 2009-06-27 2010-04-28 徐元信 Well repair device with pressure in oil field

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CN2512899Y (en) * 2001-11-26 2002-09-25 辽河石油勘探局兴隆台工程技术处 High pressure oil-gas water well operation device with pressure
US20050224232A1 (en) * 2004-04-07 2005-10-13 Surjaatmadja Jim B Workover unit and method of utilizing same
CN2711380Y (en) * 2004-06-17 2005-07-20 韩永利 Apparatus for anti-blowout during snubbing serving for full-sealing zero-pressure conversion oil-water well
CN2779047Y (en) * 2005-01-10 2006-05-10 河北华北石油荣盛机械制造有限公司 Sealed type oil-water well under-pressure operation equipment
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104420841A (en) * 2013-08-30 2015-03-18 中国石油天然气股份有限公司 Method for lifting and lowering down production string with pressure
CN103573224A (en) * 2013-10-21 2014-02-12 联合石油天然气投资有限公司 Technology for fishing oil under pressure
CN104329040A (en) * 2014-08-20 2015-02-04 中国石油化工股份有限公司 Long well segment perforating gun lifting process and special device
CN104329040B (en) * 2014-08-20 2018-06-08 中国石油化工股份有限公司 Play long well section perforating gun technique and dedicated unit
CN111119758A (en) * 2020-02-10 2020-05-08 于燕 Use method of self-balancing under-pressure operation device adopting directional slips

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