CN200940465Y - Cable anti-blow-out device - Google Patents
Cable anti-blow-out device Download PDFInfo
- Publication number
- CN200940465Y CN200940465Y CNU2006200841811U CN200620084181U CN200940465Y CN 200940465 Y CN200940465 Y CN 200940465Y CN U2006200841811 U CNU2006200841811 U CN U2006200841811U CN 200620084181 U CN200620084181 U CN 200620084181U CN 200940465 Y CN200940465 Y CN 200940465Y
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- China
- Prior art keywords
- cable
- perforating gun
- lower house
- upper shell
- seal
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a cable blowout preventer which is suitable for workover and logging operation for oilfield, realizing the cable testing operation under the states that the wellhead is confined and controllable. The cable blowout preventer comprises a cable sealing device, a grease pressure compensation device, a gate sealing device, a cable cutting device and a cable clamping device. The utility model is divided into two-body design, which hangs a hanger on a perforating gun after the hanger of the perforating gun passed through the upper shell, connecting the upper shell and the lower shell by big-pitch nuts after the perforating gun passed through the lower shell. The utility model has advantages of light weight, small size, easy operation, practicality, reliable sealing and so on. .
Description
Technical field
The utility model relates to a kind of well control device, and when the well workover of particularly a kind of oil field, logging operation, cable or rope input operation have the cable blowout hookup that closed operation prevents blowout.
Technical background
At present, in the oil field for the logging operation of high-pressure oil-gas well, especially cable input perforating job is used the conventional well control means, as is used conventional preventer, well head is in complete opening-wide state always, in case the generation blowout because well head can not be directly closed in the effect of cable, can only treat that cable is cut off or the perforating gun ejection after just can close well head, be a kind of spray measure of afterwards robbing, danger is very big.Another kind method is sealing lubricator greater than perforating gun length of upright installation on well head, in case blowout takes place, perforating gun is proposed well head, places the lubricator of upright sealing.If a bite well needs repeatedly perforation, need repeatedly change perforating gun, each perforating gun of changing all will be dismantled lubricator and hang down with hanging device from well head, because the length of perforating gun is generally between 4-12 rice, so sealed tube is greater than this height, loads and unloads very inconvenient.In sum, the perforation of general preventer, well head is in opening-wide state, dangerous property.And with the form perforation of robbing jet pipe,, install, use very inconvenient because structure is too huge.
Summary of the invention
The purpose of this utility model be to realize a kind of in light weight, volume is little, be convenient to operation installs, and can realize the closed perforation blowout hookup of oilfield downhole operation under closed state.The purpose of this utility model is to realize like this, it is by cable sealing device, cable grease pressurization compensation arrangement, flashboard sealing device, the cable clipping apparatus, cable clamping device is formed, in order to alleviate the weight of preventer device, be divided into the design of two bodies, be top and be connected by pitch nut broad in the middle with the lower part.The top latus rectum is less than the lower part latus rectum.The hanger of perforating gun is passed top, then, hanger is hung up perforating gun, by behind the lower part, adopt flange to be connected at top and the bottom and well head with the coarse pitch nut at perforating gun.Partial installation design has like this been avoided because perforating gun diameter and problem that top also will be strengthened thereupon.
Operating principle of the present utility model is: the upper cable hermetic unit adopts multistage packing seal blob of viscose (4) to form high pressure with packing grease compensation water booster system (13) in spacer (3) and follows compensatory grease seal and packing_seal.In spacer (3) space, use cable surface lines gap under the effect of high densification fat, to realize sealing.Cable when moving up and down in spacer (3) space loss of grease by the compensation water booster system (13) replenished, realized the movable sealing that cable moves up and down.Its movable sealing operating pressure is 10MPa.When well head pressure surpassed 10MPa and top seal blob of viscose and can not shunt in a well, the lower part cable clamping device (11) of clockwise direction rotation simultaneously clamped cable, and clockwise direction rotatable cable clipping apparatus (7) is cut off cable then; The outer wellhead cable is mentioned, and closes the full seal apparatus of flashboard (15) and realizes that the reliability of well head is totally-enclosed.Taking kill job elimination borehole pressure fishing.The utlity model has in light weight, volume is little, easy to operate, practical, sealing advantage such as reliable.
Description of drawings
Fig. 1 is a cable preventer master TV structure schematic diagram.
Fig. 2 is a cable preventer side-looking structural representation.
(1) is that blob of viscose pressure cap, (2) are leading screw piston for end cap, (15) for the full seal apparatus of flashboard, (16) for packing grease pressurization compensation arrangement, (14) for vent valve, (13) for cable clamping device, (12) for lower house, (11) for sealing ring, (10) for coarse pitch nut, (9) for cable clipping apparatus, (8) for upper shell, (7) for cushion block, (6) for sealed gluing block, (5) for spacer, (4) for cushion block, (3) among the figure.
The specific embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing: coarse pitch nut (8) is dismantled, and top separates with the bottom; To clean up in lower flange bottom surface and the steel ring slot, and be coated with the ring gasket of packing into behind the moderate lubrication fat, the bottom is installed on the well head, guarantee that bottom surface and well head seal with 11 cover well head bolts.And reserve screwhole position at wellhead flange and install the cable transfer gantry, the pressurize end cap (14) of compensation arrangement (13) of packing grease is unloaded, extract leading screw piston (16) out and in tube, fill with lithium base grease, load onto leading screw piston (16) and end cap (14) then respectively, magnetic locator and cable are passed upper diameter 80mm barrel mast; Perforating gun is installed, perforating gun is hung on the magnetic locator, sling in the lump in top and perforating gun, body of a gun aligned with lower diameter 145mm barrel dliameter is put into well, top and bottom centering by hook; After checking that junction surface sealing ring (9) must stand intact, screw connection and sealing that coarse pitch nut (8) guarantees top and the bottom; Putting into cushion block (5) blob of viscose spacer (3), blob of viscose (4), cushion block (2) successively installs blob of viscose pressure cap (1) and screws.Screwing moment of torsion is 50-70kg.m; Vent valve (12) is opened, screw lubricating grease pressurization compensation arrangement (13), the interior air of spacer (3) annular seal space is discharged, from vent valve (12) after having lubricating grease to emerge in the vent valve (12), vent valve (12) is screwed, and screw leading screw piston (16) and can carry out perforating application.Check that the full seal apparatus of flashboard (15), cable clipping apparatus (7), cable clamping device (11) require to be in retracted position; Carry out perforating job.For the first time perforation finishes and when confirming once more perforation, promptly dismantles coarse pitch nut (8), make top and lower part from, perforating gun is proposed, sling simultaneously in perforating gun in top, repetition aforesaid operations process behind the body of a gun that more renews again.Operation when blowout takes place, when blowout took place, if borehole pressure is no more than 10MPa, and the top blob of viscose sealed in the time of still shunting in a well, go up portable cable as early as possible, when perforating gun closes on well head, carry on stopping, behind measures such as kill-job elimination borehole pressure, dismantle coarse pitch nut (8) again, take out perforating gun.If borehole pressure surpasses 10MPa and the top blob of viscose seals in the time of can not shunting in a well, stop to go up portable cable, close cable clamping device (11) clamping cables of symmetry; The cable clipping apparatus (7) of symmetry is mobile to the center rotation simultaneously, cut off cable, external cable is proposed; Then, close the full seal apparatus of flashboard (15) as early as possible, realize reliably shut-in well.After carrying out kill-job, be sure of in the well behind the no pressure of safety coarse pitch nut (8) to be dismantled, mention top, utilize the personality card wireline tool to block to stay the well cable, then the downhole cable and the body of a gun are together proposed well head returning cable clamping device (11).
The utility model can be safe and reliable the generation that prevents gas blowout accident out of control in the wireline test process, avoid cable and downhole tool to salvage, alleviate working strength of workers and save operating cost, social benefit is very remarkable.
Claims (3)
1, a kind of cable blowout hookup, by blob of viscose pressure cap (1), cushion block (2), spacer (3) sealed gluing block (4), vent valve (12), the packing grease compensation full seal apparatus of water booster system (13) flashboard (15), cable clipping apparatus (7), coarse pitch nut (8), sealing ring (9) upper shell (6), lower house (10), cable clamping device (11) is formed, it is characterized in that this device designs for split, be divided into upper shell (6) and lower house (10), after the hanger of perforating gun passes upper shell (6), hanger is hung up perforating gun,, will go up lower house with coarse pitch nut (8) and connect by behind the lower house (10) at perforating gun.
2, cable blowout hookup according to claim 1, it is characterized in that the upper cable hermetic unit adopts multistage packing seal blob of viscose (4) and packing grease compensation water booster system (13), forms high pressure closely with compensatory grease seal and packing_seal in spacer (3).
3, cable blowout hookup according to claim 1 is characterized in that upper shell (6) diameter is 80mm, and lower house (10) diameter is 145mm, adopts big nut (8) to link together between the last lower house, adopts flange to be connected with well head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200841811U CN200940465Y (en) | 2006-05-08 | 2006-05-08 | Cable anti-blow-out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200841811U CN200940465Y (en) | 2006-05-08 | 2006-05-08 | Cable anti-blow-out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200940465Y true CN200940465Y (en) | 2007-08-29 |
Family
ID=38746643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200841811U Expired - Fee Related CN200940465Y (en) | 2006-05-08 | 2006-05-08 | Cable anti-blow-out device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200940465Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213082A (en) * | 2011-03-23 | 2011-10-12 | 承德市开发区富泉石油机械有限公司 | Capsule type cable control head |
| CN105545242A (en) * | 2016-01-28 | 2016-05-04 | 沈阳工业大学通益科技有限公司 | High-temperature wellhead penetrator structure for electric submersible pump |
| CN116181270A (en) * | 2021-11-26 | 2023-05-30 | 中国石油天然气股份有限公司 | Hydraulic sealing control device for steel wire rope |
-
2006
- 2006-05-08 CN CNU2006200841811U patent/CN200940465Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213082A (en) * | 2011-03-23 | 2011-10-12 | 承德市开发区富泉石油机械有限公司 | Capsule type cable control head |
| CN105545242A (en) * | 2016-01-28 | 2016-05-04 | 沈阳工业大学通益科技有限公司 | High-temperature wellhead penetrator structure for electric submersible pump |
| CN116181270A (en) * | 2021-11-26 | 2023-05-30 | 中国石油天然气股份有限公司 | Hydraulic sealing control device for steel wire rope |
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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: 20070829 |