CN2779047Y - Sealed type oil-water well under-pressure operation equipment - Google Patents
Sealed type oil-water well under-pressure operation equipment Download PDFInfo
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- CN2779047Y CN2779047Y CN 200520000280 CN200520000280U CN2779047Y CN 2779047 Y CN2779047 Y CN 2779047Y CN 200520000280 CN200520000280 CN 200520000280 CN 200520000280 U CN200520000280 U CN 200520000280U CN 2779047 Y CN2779047 Y CN 2779047Y
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Abstract
The utility model relates to a well head device for lifting and lowering an oil string under the condition of downhole pressure. The utility model is characterized in that the lower part is provided with a flashboard blowout preventer unit, a lower cross beam and a fixed slip; an outer cylinder of a telescoping cylinder is connected above an annular blowout preventer; the upper part of an inner cylinder of the telescoping cylinder is connected with a liquid inlet and outlet pup joint; the annular blowout preventer is connected above the liquid inlet and outlet pup joint; a traveling slip, an upper cross beam and a weight-bearing slip are connected above the annular blowout preventer; oil cylinders are symmetrically arranged between the lower cross beam and the upper cross beam. The power of the oil cylinders drives the inner cylinder of the telescoping cylinder to move up and down. The utility model has the effects that the work of lifting and lowering the oil string is completed without formation pressure release and under the condition of no well killing; the existing tradition that formation pressure is released first and then workover treatment is carried out is overcome; the release or the well killing is not carried out before workover, stratums are not damaged, and the workover treatment is arranged at any time; after the workover is completed, oil is recovered in time and the yield of an oil well is not influenced.
Description
Affiliated technical field
The utility model relates to the oil field development technical field, is a kind of workover treatment equipment.Particularly a kind of down-hole has under the pressure condition, plays, descends the wellhead equipment of tubing string, well liquid ejection in the time of preventing workover treatment.This device is the power-lift oil pipe with hydraulic pressure.Between the upper and lower blowout preventer set telescoping cylinder is arranged, upper and lower blowout preventer set cooperates with telescoping cylinder, realizes that prevention well liquid sprays in well.The utility model is under the band pressure situation of down-hole, removes oil pipe design, can finish that band is pressed, the special workover treatment of time oil pipe, has the protection oil reservoir, practical values such as quickening well workover construction speed.Being adapted at band presses, promotes the use of in the operation of oil-water well tubing string down.
Background technology
The petroleum well workover operation need be taken out the OIH pipe one by one.Strata pressure is very big, and well liquid from oil pipe or from the ejection of the annular space between oil pipe and sleeve pipe ground, makes well workover to carry out under the promotion of strata pressure.At present, the way that most workover treatments are adopted is: discharge strata pressure earlier or carry out kill-job before well workover, after the strata pressure value is reduced to safe range, play the oil pipe workover treatment.Utilize workover rig elevator and load-bearing slips, the load-bearing slips blocks and hangs oil pipe, and oil pipe is proposed ground; At well head stationary slip is arranged, block oil pipe, the thread between the oil pipe of stationary slip top of outwarding winding takes off oil pipe.Ground is proposed oil pipe so one by one.During following oil pipe, adopt same principle that oil pipe is transferred in the well.The operational method benefit of this release strata pressure or kill-job is gas blowout accident not to take place.Its shortcoming is: 1, discharge strata pressure or kill-job, bring very big infringement can for the production fluid stratum; 2, discharging strata pressure or kill-job needs tens days or tens day time, incurs loss through delay the well workover time; 3, finish well workover after, recovering strata pressure needs tens days even six months, delaying recovers the oil produces, and influences output.
Summary of the invention
The purpose of this utility model is: a kind of closed apparatus for work under pressure for oil-water well is provided, changes the oil-water well operating type.Promptly do not discharge strata pressure, under the band pressure situation, playing, descending the operation of oil-water well tubing string in the well.Overcome existing release strata pressure or kill-job workover treatment, bring infringement, incur loss through delay the well workover time, the deficiency that influence is recovered the oil and produced to the stratum.
The utility model is that the technical scheme that its technical problem of solution is taked is: the ram preventer group is arranged at closed apparatus for work under pressure for oil-water well bottom, annular space between Sealed casing pipe and the oil pipe.Ram preventer group upper bolt connects lower transverse beam.Porose in the middle of the lower transverse beam.The middle upper and lower flange that has of lower transverse beam.Lower flange connects the ram preventer group, and upper flange is connected and fixed slips.The stationary slip top adopts flange to connect annular preventer.The annular preventer top adopts flange to connect the telescoping cylinder urceolus.Flange is arranged at telescoping cylinder inner core top, and flange connects liquid turnover pipe nipple.On the liquid turnover pipe nipple liquid entrance is arranged.When liquid entrance is stretched at telescoping cylinder, be liquid make-up in the cylinder; When telescoping cylinder is compressed, discharge liquid in the cylinder.Above liquid turnover pipe nipple, adopt flange to connect annular preventer.The annular preventer top connects traveling slip with flange.The traveling slip top connects top rail and load-bearing slips.Porose in the middle of the top rail.Between lower transverse beam and top rail, be symmetrically installed with oil cylinder.The effect of oil cylinder is to utilize hydraulic power to promote top rail, traveling slip, annular preventer, liquid turnover pipe nipple, and the inner core of telescoping cylinder moves up and down.Ram preventer group described in the utility model, annular preventer, load-bearing slips are existing products, are not described in detail.Stationary slip and traveling slip, our company submits patent application to Patent Office of the People's Republic of China, is not described in detail.
Described telescoping cylinder has two-layer cylinder barrel at least, i.e. inner core and urceolus.Also can be three layers of cylinder barrel, i.e. inner core, middle tube and urceolus.Sealing ring is arranged between the cylinder barrel.
Described telescoping cylinder urceolus diameter is between the 160-400 millimeter, and the oil cylinder internal diameter is between the 60-300 millimeter.
Back length is longer because oil cylinder, telescoping cylinder trail, and in order still to keep stability preferably after oil cylinder, telescoping cylinder are trailed, is fixed with middle cross beam on the top of telescoping cylinder, and middle cross beam connects oil cylinder.
Described liquid turnover pipe nipple is equipped with hydraulic operated valve on liquid entrance.
Described ram preventer group comprises: the combination of slip-type, half-closed type and full-enclosed type ram preventer.
Porose in the middle of the described lower transverse beam, the diameter in hole is between the 124-240 millimeter.Porose in the middle of the top rail, the diameter in hole is between the 90-186 millimeter.
The operating principle of the present utility model that underdraws is convenient to understand the utility model.The closed apparatus for work under pressure for oil-water well course of work can be divided into two states, and oil cylinder stretch, contract motion state and oil cylinder is motionless, loading, unloading oil pipe state.
When one, playing oil pipe with the utility model, traveling slip chucking oil pipe upper end, last annular preventer, liquid turnover pipe nipple hydraulic operated valve are closed.Following annular preventer, stationary slip, ram preventer group are opened, and provide high voltage power liquid to oil cylinder, the hoist cylinder elongation, and traveling slip, last annular preventer, liquid turnover pipe nipple hydraulic operated valve raise with captured oil pipe.Because last annular preventer and traveling slip are closed, during the oil cylinder stretching motion, well liquid can not spray, and oil pipe can not eject yet.When oil cylinder rises to top dead-centre, close down annular preventer and stationary slip, open liquid turnover pipe nipple hydraulic operated valve, with closing after the highly pressurised liquid release in the Telescopic short piece, open annular preventer and traveling slip, oil cylinder is dropped to bottom dead centre.Again with traveling slip chucking oil pipe top, last annular preventer cuts out.Following annular preventer, stationary slip, ram preventer group are opened, and provide high voltage power liquid to oil cylinder, the hoist cylinder elongation, and traveling slip, last annular preventer, liquid turnover pipe nipple hydraulic operated valve raise with captured oil pipe.And so forth oil pipe is proposed in well one by one.
With under the oil cylinder during oil pipe, opposite with said method, oil pipe is sent in the well one by one.
Two, oil cylinder is static, and during loading, unloading oil pipe state, following annular preventer, stationary slip are closed.Open liquid turnover pipe nipple valve, will close after the high-pressure well liquid release in the telescoping cylinder.Because following annular preventer cuts out, well liquid can not spray.Can safe loading, unloading oil pipe.
The beneficial effects of the utility model are: from operating principle of the present utility model as can be seen, the closed apparatus for work under pressure for oil-water well has in oil well under the pressure condition, rises, descends oil well pipe to reach the sealing well head fully, prevents the purpose of well liquid ejection.For the oil field provides a kind of fluid pressure type apparatus for work under pressure for oil-water well, do not discharging under strata pressure, the not kill-job situation, finished, descended the oil well pipe operation.Overcome workover treatment tradition after existing open flow or the kill-job.Adopt the utility model to finish the lift pipe string rountrip, the stratum can not suffer damage; At any time can arrange workover treatment; After finishing well workover, strata pressure still remains on original state, and the production of can in time recovering the oil does not influence oil well output.In addition, well liquid can not outflow, and can not cause surrounding environment to pollute, and plays the protection environmental activity.
Description of drawings
Illustrations is the utility model overall structure schematic diagram.Also be that the utility model liquid is installed to schematic diagram on the well head four-way (1).Well head four-way (1) is not the utility model content.
Among the figure, 1. well head four-way, 2. ram preventer group, 3. lower transverse beam, 4. stationary slip, 5. annular preventer, 6. telescoping cylinder, 7. oil cylinder, 8. middle cross beam, 9. liquid turnover pipe nipple, 10. annular preventer, 11. traveling slips, 12. top rails, 13. load-bearing slips.
The specific embodiment
Embodiment 1: as shown in drawings, stimulating the menstrual flow with one is that 186 millimeters closed apparatus for work under pressure for oil-water well is that example describes.Ram preventer group (2) is arranged at the bottom, adopts the combination of slip-type, half-closed type and full-enclosed type ram preventer, and model is 3FZ18-35.Ram preventer group (2) upper bolt connects lower transverse beam (3).186 millimeters of the diameters of lower transverse beam (3) interstitial hole.The middle upper and lower flange that has of lower transverse beam (3).Lower flange connects ram preventer group (2), and top connects airtight pressure-bearing self-tightening type stationary slip (4).Stationary slip (4) top adopts flange to connect annular preventer (5), and the model of annular preventer (5) is FH18-35.Annular preventer (5) top adopts flange to connect telescoping cylinder (6) urceolus.Telescoping cylinder (6) is three layers of cylinder barrel, 124 millimeters of inner core internal diameters, 320 millimeters of urceolus external diameters.The wall thickness of three layers of cylinder barrel is 10 millimeters.Flange is arranged at telescoping cylinder (6) inner core top, and flange connects liquid turnover pipe nipple (9).Liquid turnover pipe nipple (9) highly is 240 millimeters, and internal diameter is 186 millimeters.On the liquid turnover pipe nipple (9) liquid entrance is arranged, the pushswitch valve is installed on liquid entrance.Adopt flange to connect annular preventer (10), model position FH12-35 in liquid turnover pipe nipple (9) top.Annular preventer (10) top connects self-tightening type traveling slip (11) with flange.Traveling slip (11) top connects top rail (12) and load-bearing slips (13).Porose in the middle of the top rail (12), the diameter in hole is at 186 millimeters.The middle upper and lower flange that has of top rail (12).Between lower transverse beam (3) and top rail (12), be symmetrically installed with 2 oil cylinders (7).The length of oil cylinder (7) elongation is 6 meters, and internal diameter is 140 millimeters.Adopt bolt to be connected oil cylinder (7) is fixed on upper and lower crossbeam (3) (12) centre with bearing pin.Maximum working pressure (MWP) in the oil cylinder (7) is 21MPa.Oil cylinder (7) lifting force is 500KN, and downforce is 350KN.Drive top rail (12), traveling slip (11), annular preventer (10), liquid turnover pipe nipple (9), telescoping cylinder (6) inner core, and tubing string moves up and down.Be fixed with middle cross beam (8) on the urceolus top of telescoping cylinder (6), middle cross beam (8) is fixed on the oil cylinder (7).
Claims (10)
1, a kind of closed apparatus for work under pressure for oil-water well, be mainly used in down-hole band pressure and remove the operation of oil-water well tubing string, mainly by ram preventer group (2), annular preventer (5) (10), telescoping cylinder (6), oil cylinder (7), and slips etc. form, it is characterized in that: the ram preventer group is arranged at the bottom, ram preventer group top flange, bolt connects lower transverse beam (3), porose in the middle of the lower transverse beam (3), the diameter in hole is between 124-240, on lower transverse beam (3) centre, under flange is arranged, upper flange is connected and fixed slips (4), stationary slip (4) top, flange connects annular preventer (5), annular preventer (5) top, flange connects telescoping cylinder (6) urceolus, flange is arranged at telescoping cylinder (6) inner core top, flange connects liquid turnover pipe nipple (9), on the liquid turnover pipe nipple (9) liquid entrance is arranged, adopt flange to connect annular preventer (10) in liquid turnover pipe nipple (9) top, annular preventer (10) top connects traveling slip (11) with flange, traveling slip (11) top connects top rail (12) and load-bearing slips (13), porose in the middle of the top rail (12), the diameter in hole is between 90-186, on top rail (12) centre, under flange is arranged, between lower transverse beam (3) and top rail (12), be symmetrically installed with oil cylinder (6).
2, closed apparatus for work under pressure for oil-water well as claimed in claim 1 is characterized in that: described telescoping cylinder (6) urceolus diameter is between the 160-400 millimeter, and oil cylinder (7) internal diameter is between the 60-300 millimeter.
3, closed apparatus for work under pressure for oil-water well as claimed in claim 1 is characterized in that: be fixed with middle cross beam (8) on the top of telescoping cylinder (6), middle cross beam (8) connects oil cylinder (7).
4, closed apparatus for work under pressure for oil-water well as claimed in claim 1 is characterized in that: described liquid turnover pipe nipple (9) is equipped with hydraulic operated valve on liquid entrance.
5, as claim 1 or 2 or 3 or 4 described closed apparatus for work under pressure for oil-water well, it is characterized in that: described telescoping cylinder (6) has two-layer cylinder barrel, and promptly inner core and urceolus have sealing ring between the cylinder barrel.
6, as claim 1 or 2 or 3 or 4 described closed apparatus for work under pressure for oil-water well, it is characterized in that: described telescoping cylinder (6) has three layers of cylinder barrel, and promptly inner core, middle tube and urceolus have sealing ring between the cylinder barrel.
7, closed apparatus for work under pressure for oil-water well as claimed in claim 5 is characterized in that: described ram preventer group comprises: the combination of slip-type, half-closed type and full-enclosed type ram preventer.
8, closed apparatus for work under pressure for oil-water well as claimed in claim 6 is characterized in that: described ram preventer group comprises: the combination of slip-type, half-closed type and full-enclosed type ram preventer.
9, closed apparatus for work under pressure for oil-water well as claimed in claim 5 is characterized in that: porose in the middle of the described lower transverse beam, the diameter in hole is between the 124-240 millimeter.Porose in the middle of the top rail, the diameter in hole is between the 90-186 millimeter.
10, closed apparatus for work under pressure for oil-water well as claimed in claim 6 is characterized in that: porose in the middle of the described lower transverse beam, the diameter in hole is between the 124-240 millimeter.Porose in the middle of the top rail, the diameter in hole is between the 90-186 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000280 CN2779047Y (en) | 2005-01-10 | 2005-01-10 | Sealed type oil-water well under-pressure operation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000280 CN2779047Y (en) | 2005-01-10 | 2005-01-10 | Sealed type oil-water well under-pressure operation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779047Y true CN2779047Y (en) | 2006-05-10 |
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ID=36753136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520000280 Expired - Lifetime CN2779047Y (en) | 2005-01-10 | 2005-01-10 | Sealed type oil-water well under-pressure operation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2779047Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507206C (en) * | 2007-02-09 | 2009-07-01 | 杨颖辉 | Pressure equalization type static sealed pressurized well-repairing working device |
| CN102561975A (en) * | 2012-01-04 | 2012-07-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Lifting pressurized well-repairing technology in closed oil pipe |
| CN101555776B (en) * | 2009-05-18 | 2013-04-03 | 中国石油辽河油田钻采工艺研究院 | Wellhead blowout preventer of external packer of pipe |
| CN103711442A (en) * | 2013-12-10 | 2014-04-09 | 松原市前进石油工程机械有限公司 | Double-travelling-slip device with two slip mechanisms in up-down and symmetrical arrangement |
| CN103939047A (en) * | 2014-04-29 | 2014-07-23 | 沈阳工业大学 | Sealant core replacement device of annular preventer |
| 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 |
| CN113404458A (en) * | 2021-06-30 | 2021-09-17 | 中海油能源发展股份有限公司 | Floating sealing device and under-pressure well repairing operation method for opening tool |
-
2005
- 2005-01-10 CN CN 200520000280 patent/CN2779047Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507206C (en) * | 2007-02-09 | 2009-07-01 | 杨颖辉 | Pressure equalization type static sealed pressurized well-repairing working device |
| CN101555776B (en) * | 2009-05-18 | 2013-04-03 | 中国石油辽河油田钻采工艺研究院 | Wellhead blowout preventer of external packer of pipe |
| CN102561975A (en) * | 2012-01-04 | 2012-07-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Lifting pressurized well-repairing technology in closed oil pipe |
| CN102561975B (en) * | 2012-01-04 | 2014-08-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Lifting pressurized well-repairing technology in closed oil pipe |
| CN103711442A (en) * | 2013-12-10 | 2014-04-09 | 松原市前进石油工程机械有限公司 | Double-travelling-slip device with two slip mechanisms in up-down and symmetrical arrangement |
| CN103939047A (en) * | 2014-04-29 | 2014-07-23 | 沈阳工业大学 | Sealant core replacement device of annular preventer |
| CN103939047B (en) * | 2014-04-29 | 2017-10-24 | 沈阳工业大学 | A kind of annular preventer packing unit more changing device |
| 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 |
| CN113404458A (en) * | 2021-06-30 | 2021-09-17 | 中海油能源发展股份有限公司 | Floating sealing device and under-pressure well repairing operation method for opening tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150110 Granted publication date: 20060510 |