CN2667147Y - Non-well killing servicing machine - Google Patents
Non-well killing servicing machine Download PDFInfo
- Publication number
- CN2667147Y CN2667147Y CN 200320102054 CN200320102054U CN2667147Y CN 2667147 Y CN2667147 Y CN 2667147Y CN 200320102054 CN200320102054 CN 200320102054 CN 200320102054 U CN200320102054 U CN 200320102054U CN 2667147 Y CN2667147 Y CN 2667147Y
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- cylinder
- well
- liquid sealing
- sealing cylinder
- well liquid
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- Expired - Fee Related
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Abstract
The utility model relates to a special device for a well repair operation, particularly a servicing machine with a pressing lower pipe column, which is composed of a hydraulic pressure power station, a derrick, a driving power cylinder, a pulley, a steel cable system, a sliding portion, a well fluid sealing cylinder, a well head fixing portion, etc. The utility model is characterized in that the sliding portion is composed of an upper blowout preventer unit, a driving rotating disk and a tailored slip. The fixing portion is composed of a well head blowout preventer unit and a tailored slip. The well fluid sealing cylinder is arranged between the sliding portion and the well head fixing portion. The well fluid sealing cylinder is a telescopic multi-stage hollow plunger cylinder, and a sealing element is arranged between every two cylinders. The lower part of the well fluid sealing cylinder is connected with the well head fixing portion, and the upper part of the well fluid sealing cylinder is connected with the sliding portion. When the pipe column moves up and down, the pipe column and a blowout preventer can not generate the relative movement and the dynamic friction, so the seal of the blowout preventer can not be damaged. The servicing machine also has the function of preventing the well fluid blowout, the stratum pollution and the ground pollution.
Description
Technical field
The utility model is the special equipment of a kind of well, polymer injection well, workover rig service to oil well, be a kind of in well the tubing string band press the working rig of rountrip, form by institutes such as hydraulic power station, derrick, driving actuator cylinder, pulley and steel rope system, the part of moving about (comprising rotating disk, traveling slip, ram preventer group), well liquid sealing cylinder, well head standing part (comprise the well head ram preventer, seal slips), balance winch, pulling winch, action bars.Adopt the operation of this working rig the ejection of prevention well liquid to be arranged, prevent effects such as formation contaminant, ground pollution.
Background technology
Usually before playing lower tubular column, need put pressure or, prevent gas blowout accident well, polymer injection well, oil well with well killing fluid kill-job processing.The operational method that a kind of advanced person is arranged now: keeping playing the lower tubular column operation under the borehole pressure situation, neither blowout can take place, also can not pollute stratum and ground.This method is called snubbing serving.The snubbing serving machine that uses during on-the-spot workover treatment by derrick, drive institutes such as actuator cylinder, stationary slip, traveling slip, rotating disk, action bar and balance winch and form.Its part of moving about mainly is made up of slips, driving rotating disk, chain wheel rope system.This snubbing serving machine cooperates the wellhead blowout preventor group to use.In order to prevent that well liquid from spraying from well head when the snubbing serving, when playing lower tubular column, close the ring-like preventer in the well head blowout preventer set, omnipotent preventer or from end socket.Wellhead blowout preventor seals up tubing string and sleeve pipe annular space, and the upper and lower motion of tubing string is movable sealing between its external surface and the preventer, produce friction between tubing string external surface and the preventer sealing, sealing is easy to damage, and causes the sealing failure, snubbing serving is forced to stop, and changes novel sealing.This snubbing serving machine has solved the lifting of oil well pipe well and has transferred.But during the upper and lower motion of tubing string, friction between tubing string external surface and the wellhead blowout preventor sealing, bad seals problem do not solve, and influence the normal use of snubbing serving machine.
The utility model content
The purpose of this utility model is to overcome existing snubbing serving machine when the upper and lower motion of tubing string, and the friction of asking of tubing string surface and preventer sealing causes the deficiency of bad seals, and a kind of snubbing serving machine is provided.This snubbing serving function makes between preventer sealing and the tubing string does not have relative motion, realizes that movable sealing becomes static seal.Solve the sealing part abrasion problem, thereby improve preventer application life.
Snubbing serving machine of the present utility model adopts derrick, driving actuator cylinder, pulley system, the action bar and the balance winch of existing snubbing serving machine and drives rotating disk.It is characterized in that: the part of moving about is made up of last blowout preventer set, driving rotating disk and special slips, and standing part is made up of wellhead blowout preventor group and special slips, moving about between part and the well head standing part, well liquid sealing cylinder is arranged.Well liquid sealing cylinder is telescopic hollow column plug cylinder.Telescopic hollow column plug cylinder is at least two-stage.Between every grade of cylinder barrel seal is arranged.The bottom of well liquid sealing cylinder is connected with this well head standing part, between sealing is arranged.The top of well liquid sealing cylinder is connected with the part of moving about, and sealing is arranged.When operation upper lifting pipe post, last preventer cuts out, upper slips chucking tubing string; Wellhead blowout preventor is opened, and lower slips is opened.Drive actuator cylinder, pulley system promotes tubing string.At this moment tubing string moves upward under the drive of upper slips.Seal no relative motion between last preventer and the tubing string external surface; Wellhead blowout preventor and lower slips are opened, and do not have friction between tubing string external surface and the wellhead blowout preventor.Otherwise when the part of moving about moved downward, last preventer was opened, and wellhead blowout preventor cuts out.Do not produce relative motion between last preventer, wellhead blowout preventor and the tubing string external surface yet.Wellhead blowout preventor and last preventer are alternately opened, are closed, tubing string with close after preventer do not produce relative motion, do not produce dyanainic friction between them, preventer sealing is not easy to damage.
Well liquid sealing cylinder is the vitals of snubbing serving machine.Require the center of outer cylinder, middle plunger case and inner plunger cylinder barrel to be consistent, and require sealing.In order to guarantee that the snubbing serving machine is when working, the center line of outer cylinder, middle plunger case and inner plunger cylinder barrel is consistent, reach seal request between the cylinder barrel, the architectural feature of well liquid sealing cylinder is that upper flange is connected with inner plunger cylinder barrel upper end, between upper flange and the inner cylinder tube seal is arranged.Middle plunger case is arranged between inner plunger cylinder barrel and the outer cylinder.Between inner plunger cylinder barrel and the middle plunger case, between middle plunger case and the outer cylinder dust ring, combination seal and guide ring are arranged.Lower flange is connected with the outer cylinder lower end, between lower flange and the outer cylinder seal is arranged.Lower flange has into outage, and the position of advancing outage is in the outer cylinder lower end.
In order to tighten tubing string, original slips guide pass is a plagiohedral.When the upper lifting pipe post, taper seat is stressed to the chucking tubing string from beginning, and the part of moving about needs micro-stroke.Produce small relative motion between tubing string and the preventer inevitably, produce dynamic friction between tubing string external surface and the preventer.Though the relative motion distance is very short, the friction of generation can destroy the sealing of preventer.The friction that the utility model produces for the small movements that overcomes between tubing string and the preventer, the slips guide pass is made the cabochon of horizontal positioned.After closing slips, the card tooth tightens tubing string, does not have relative motion between slips and the tubing string.
It is of the present utility model that the good results are evident.When operation, the part of moving about preventer, slips and well head standing part preventer, slips are alternately opened, are closed, tubing string and close after the sealing of preventer and tubing string between do not produce relative motion, they do not produce dyanainic friction, the preventer sealing is not damaged.
Description of drawings
Accompanying drawing 1 is the front view of snubbing serving machine.Be snubbing serving machine structural representation, expressed well liquid sealing cylinder (8), well head standing part preventer (10), position and the annexation of lower slips (9) in the snubbing serving machine especially.What represent is to move about partly to be thus lifted to derrick (2) middle part, and well liquid sealing cylinder (8) is elongated to the centre position.
Accompanying drawing 2 is lateral views of snubbing serving machine.The positions in the snubbing serving machine such as (7) is blocked in rotating disk (5), slips (4), the part of moving about blowout preventer set (6), well head standing part lower slips (9), blowout preventer set (10), balance winch (11), pulling winch and the operation of expression derrick (2), driving actuator cylinder (3), pulley and steel rope system (1), the part of moving about.
Accompanying drawing 3 is sectional drawings of well liquid sealing cylinder (8).Express the structure of telescopic three grades of well liquid sealing cylinders.
The specific embodiment
Embodiment 1: the derrick of snubbing serving machine (2) is high 23 meters, is made by the steel pipe welding.Have can lifting base, base can be raised derrick 5.5 meters after rising.Drive 6.5 meters of actuator cylinder (3) length, internal diameter of cylinder is 280 millimeters.Drive power cylinder (3) piston rod and be suspended on derrick (2) top.Action bar is equipped with liquid, electric controller in (7).Balance winch (11) is the auxiliary winch of snubbing serving machine.Drive rotating disk (5) and form the part of moving about with upper slips (4), last preventer (6).The utility model is compared improvement part with original snubbing serving machine: the special slips guide pass of move about part and standing part is made horizontal cabochon.Moving about between part and the well head standing part, well liquid sealing cylinder (8) is arranged.Well liquid sealing cylinder (8) is telescopic three grades of hollow column plug cylinders, and seal (15) is arranged between every grade of cylinder barrel.Telescopic three grades of well liquid sealing cylinders have inner plunger cylinder barrel (19), middle plunger case (18) and outer cylinder (17).The structure of well liquid sealing cylinder (8) is: upper flange (12) is threaded with inner plunger cylinder barrel (19) upper end or welds, and between upper flange (12) and the inner plunger cylinder barrel (19) seal (20) is arranged.Between inner plunger cylinder barrel (19) and the outer cylinder (17) a middle plunger case (18) is arranged.Between inner plunger cylinder barrel (19) and the middle plunger case (18), between middle plunger case (18) and the outer cylinder (17) dust ring (16), combination seal (15) and guide ring (14) are arranged respectively.Lower flange (21) is threaded with outer cylinder (17) lower end or welds, and between lower flange (21) and the outer cylinder (17) seal (20) is arranged.Lower flange (21) has one to advance outage (22), and the position of advancing outage (22) is in outer cylinder (17) lower end, and the internal diameter that advances outage (22) is 58 millimeters.The effect of advancing outage (22) is, when central plunger case (18) and inner plunger cylinder barrel (19) rise, advances outage (22) feed liquor body, is well liquid sealing cylinder (8) liquid make-up; When central plunger case (18) and inner plunger cylinder barrel (19) shrink, advance outage (22) and discharge liquid, keep well liquid sealing cylinder (8) internal pressure.Inner plunger cylinder barrel (19) wall thickness is 8 millimeters, and internal diameter is 124 millimeters, and external diameter is 140 millimeters; Middle plunger case (18) wall thickness is 9 millimeters, and internal diameter is 140 millimeters; Outer cylinder (17) wall thickness is 12 millimeters, and internal diameter is 170 millimeters.Length after cylinder barrel shrinks is 5.8 meters.The bottom of well liquid sealing cylinder (8) adopts bolt to be connected with this well head standing part, between well liquid sealing cylinder (8) and the standing part sealing ring is arranged.The top of well liquid sealing cylinder (8) is connected with the part of moving about, and between the last preventer (6) of the well liquid sealing cylinder (8) and the part of moving about sealing ring is arranged.
Embodiment 2: basic identical with embodiment 1, difference is to adopt well liquid sealing cylinder (8) to be telescopic level Four well liquid sealing cylinder.Combination seal (15) is arranged between every grade of cylinder barrel.
Claims (5)
1, a kind of well that is used for, polymer injection well, the oil well well workover, the tubing string band is pressed the snubbing serving machine of rountrip in well, be by derrick (2), drive actuator cylinder (3), action bar (7) and balance winch (11) and driving rotating disk (5) etc. are formed, it is characterized in that: the part of moving about is by last blowout preventer set (6), driving rotating disk (5) and special slips (4) forms, standing part is made up of wellhead blowout preventor group (10) and special slips (9), moving about between part and the well head standing part, well liquid sealing cylinder (8) is arranged, well liquid sealing cylinder (8) is telescopic multi-stage hollow plunger case, telescopic hollow column plug cylinder is at least two-stage, combination seal (15) is arranged between every grade of cylinder barrel, the bottom of well liquid sealing cylinder (8) is connected with the well head standing part, between sealing is arranged, the top of well liquid sealing cylinder (8) is connected with the part of moving about, and sealing is arranged.
2, snubbing serving machine as claimed in claim 1, it is characterized in that: the structure of well liquid sealing cylinder (8) is that upper flange (12) is connected with inner plunger cylinder barrel (19) upper end, between upper flange (12) and the inner plunger cylinder barrel (19) seal (20) is arranged, between inner plunger cylinder barrel (19) and the outer cylinder (17) middle plunger case (18) is arranged, between inner plunger cylinder barrel (19) and the middle plunger case (18), between middle plunger case (18) and the outer cylinder (17) dust ring (16) is arranged, combination seal (15) and guide ring (14), lower flange (21) is connected with outer cylinder (17) lower end, between lower flange (21) and the outer cylinder (17) seal (20) is arranged, lower flange (21) has into outage (22), and the position of advancing outage (22) is in outer cylinder (17) lower end.
3, as claim 1 or 2 described snubbing serving machines, it is characterized in that: well liquid sealing cylinder (8) is telescopic three grades of well liquid sealing cylinder structures.
4, as claim 1 or 2 described snubbing serving machines, it is characterized in that: well liquid sealing cylinder (8) is telescopic level Four well liquid sealing cylinder structure, and combination seal (15) is arranged between every grade of cylinder barrel.
5, as claim 1 or 2 described snubbing serving machines, it is characterized in that: slips (4) (9) internal slip guide pass is the cabochon of horizontal positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102054 CN2667147Y (en) | 2003-11-03 | 2003-11-03 | Non-well killing servicing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102054 CN2667147Y (en) | 2003-11-03 | 2003-11-03 | Non-well killing servicing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667147Y true CN2667147Y (en) | 2004-12-29 |
Family
ID=34339941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320102054 Expired - Fee Related CN2667147Y (en) | 2003-11-03 | 2003-11-03 | Non-well killing servicing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667147Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939013A (en) * | 2014-04-28 | 2014-07-23 | 沈阳工业大学 | Integrated high-temperature pressure balance workover rig |
-
2003
- 2003-11-03 CN CN 200320102054 patent/CN2667147Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939013A (en) * | 2014-04-28 | 2014-07-23 | 沈阳工业大学 | Integrated high-temperature pressure balance workover rig |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041229 Termination date: 20111103 |