CN203756113U - Eccentric separate injection well dead weight type sealing device - Google Patents
Eccentric separate injection well dead weight type sealing device Download PDFInfo
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- CN203756113U CN203756113U CN201420147219.XU CN201420147219U CN203756113U CN 203756113 U CN203756113 U CN 203756113U CN 201420147219 U CN201420147219 U CN 201420147219U CN 203756113 U CN203756113 U CN 203756113U
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- sealing
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- injection well
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- pole
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Abstract
An eccentric separate injection well dead weight type sealing device is integrally in a cylinder structure. An upper connector is in thread connection with an upper central rod; an upper spring sleeves the upper central rod; the upper spring is connected with a sealing head after penetrating a sealing cylinder central hole; a sealing cylinder cap is in thread connection with a sealing cylinder; a sealing base sleeves the lower portion of the sealing cylinder; a rubber bowl, a fixing support and a separation ring sleeve the sealing base; the lower end of the sealing cylinder is in thread connection with an end socket; the lower portion of the sealing base is in thread connection with a bearing body; the middle of the bearing body is provided with two symmetrical bearing arms; a cross spring is arranged between the two bearing arms; a lower central rod is installed in a lower end central hole of the bearing body; the upper end of the lower central rod is in thread connection with a clamping support; a lower spring sleeves the middle of the lower central rod; the lower end of the bearing body is in thread connection with a conical head switch body; a lower end conical head of the lower central rod is matched with a switch wheel; the switch wheel is provided with a switch block. The eccentric separate injection well dead weight type sealing device has the advantages of being reliable in sealing due to the expansion rubber bowel sealing and the rubber gasket sealing of a pressure relief channel, enabling instrument lifting and decreasing to be smooth, rapidly achieving pressure relief, guaranteeing the testing work reliability of an injection well and improving the injection well testing efficiency.
Description
Technical field
the utility model relates to the test sealing device that oil-field flooding separate water injection well pressure disturbances is tested envelope or zonal pressure when monitoring, specifically a kind of eccentric separated-injection well deadweight type sealing device.
Background technology
the eccentric separate water injection well of China adopts 665-2 type eccentric injection mandrel at present.Whether, owing to being subject to the impact of many factors, layer separating packer may not really play the effect of packing, need to check it to break seal by variety of way.Wherein pressure disturbances test envelope be the most easy method of inspection.This method need to be sealed the pipe internal channel that packer is corresponding, then the interference of exerting pressure.Meanwhile, zonal pressure monitoring needs the sealing of strict guarantee interlayer.
sealing device for passage between confining bed mainly contains two kinds: fixed rubber sealing and the sealing of expansion glue bowl.The former is difficult to guarantee the positiver sealing under certain pressure reduction, to test result, brings very large uncertainty.The latter can positiver sealing in the situation that glue bowl is normally seated in seating nipple, but pressure differences, when finishing test, gone up instrument resistance excessive, for avoiding card instrument, be provided with pressure release passage, this passage adopts the coupling sealing between steel, cannot guarantee the transmission of occluding pressure, affect equally test result.In addition,, due to glue bowl and positioner interlock, positioner in the swollen state that opens, is very easily obstructed after opening in decentralization process, is difficult to guarantee location sealing.
Summary of the invention
the purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of eccentric separated-injection well deadweight type sealing device is provided.
technical solutions of the utility model comprise: top connection, upper center-pole, sealing drum cap, upper spring, sealing ring, sealing drum, seal head, seal receptacle, glue bowl, fixedly holder, spacer ring, end socket, back shaft, cross spring, supporting arm, supporting mass, Kato, lower center-pole, lower spring, switch wheel, wheel shaft, switch spring, switch pin, switch block, switch body.Described eccentric separated-injection well deadweight type sealing device is cylindrical structure, top connection is threaded with upper center-pole, upper center-pole cover has upper spring to pass sealing drum cap centre bore, and upper and lower side has sealing ring, be connected with seal head with top connection respectively, sealing drum cap thread top is equipped with sealing ring and is threaded with sealing drum, sealing drum bottom cover has seal receptacle, on seal receptacle, cover has glue bowl, fixing holder, spacer ring, sealing ring is equipped with in the lower end of seal receptacle, the lower end of sealing drum is provided with external screw thread, be threaded with end socket, the bottom of seal receptacle is threaded with supporting mass, in the middle of supporting mass, be provided with symmetrical two supporting arms being fixed by back shaft, between two supporting arms, be provided with cross spring, supporting mass lower end centre bore is equipped with lower center-pole, the lower center-pole upper end Kato that is threaded, intermediate sleeve has lower spring, Kato is under the effect of lower spring, block or discharge two supporting arms, supporting mass lower end is threaded with conehead switch body, the lower end conehead of lower center-pole coordinates with the gap of switch wheel, in the right angle switch cavity of switch wheel, be provided with the fixing switch block of switch pin, switch spring is housed on switch pin.
the top connection side of being provided with in above-mentioned eccentric separated-injection well deadweight type sealing device lacks.Its top screw thread coordinates with pressure gauge used.
sealing drum center in above-mentioned eccentric separated-injection well deadweight type sealing device is provided with tapered hole, and tapered hole cylindrical is provided with the frustum of a cone, and the top of tapered hole is arranged with 2～4 flowing holes, and bottom is provided with flowing hole, and lower end screw thread is provided with fixing hole.
seal receptacle centre bore top in above-mentioned eccentric separated-injection well deadweight type sealing device is made as horn mouth, and centre is arranged with two rectangle round end flowing holes, and lower end is provided with cannelure.
the outer rim of the supporting arm in above-mentioned eccentric separated-injection well deadweight type sealing device is the rectangular wedge-like structure of circular arc, and top is provided with axis hole, the vertical blind hole that is provided with of centre and axis hole, and lower end is provided with trough with straight angle.
the conehead top of the lower center-pole in above-mentioned eccentric separated-injection well deadweight type sealing device is provided with round platform, is arranged with two sides and lacks on round platform.
the sealing device top connection of above-mentioned eccentric separated-injection well deadweight type and pressure gauge are connected to form a set of test macro, by steel wire or cable, go into the well.Before going into the well, draw supporting arm in, promote lower center-pole and make on Kato to move, block the supporting arm of gathering, revolution switch wheel makes lower center-pole tail cone be stuck in switch wheel outer rim step, makes system become except switch block the cylinder without projection.
above-mentioned test macro is gone into the well and is reached below predetermined injection well downhole flow regulator, then on carry, pass through injection well downhole flow regulator.Be subject to switch spring effect, switch block one-directional rotation, does not affect and transfers.Be subject to the impact of injection well downhole flow regulator necking down, switch wheel rotation, lower center-pole tail cone falls into switch wheel breach, and Kato moves down, and supporting arm is opened by cross spring effect.
above-mentioned test macro is transferred again, and bearing arm supports is on injection well downhole flow regulator step, and sealing drum and instrument more than top connection are descending because conducting oneself with dignity, and promotes sealing drum extruding glue bowl and expands, and the outer rim injection well downhole flow regulator seal section inwall that reclines, realizes the prevention of injected water is flowed.Along with the increase of upper and lower pressure reduction, further increase the squeezing action of sealing drum to glue bowl, seal more reliable.
on carry test macro, pull top connection to drive upper center-pole, center-pole drives on seal head and moves, current flow to stratum along open vallecular cavity to the injection well downhole flow regulator of sealing drum side opening → centre bore → discharge orifice → supporting mass, the upper and lower pressure reduction of sealing device is disappeared, be subject to upper spring effect, on sealing drum hatband movable sealing cylinder, move, glue bowl elastical retraction, depart from injection well downhole flow regulator seal section inwall, be subject to the promotion of sealing drum and end socket, in seal receptacle and lower mechanisms thereof, move, depart from injection well downhole flow regulator, complete that sealing device dams and dispose procedure.
in above-mentioned test system and test process, connect the fluid pressure below fluid sealant bowl that is always that the pressure sensor of top connection surveys.
the beneficial effects of the utility model are: adopt the rubber sealing of the sealing of expansion glue bowl and pressure release passage, sealing is reliable, and instrument removes smooth and easy, realizes rapidly pressure release, guarantees injection well testing functional reliability, improves injection well testing efficiency.
Accompanying drawing explanation
fig. 1-the utility model master looks partial cutaway structural representation.
the master of Fig. 2-the utility model sealing drum 6 is depending on partly cuing open structural representation.
the master of Fig. 3-the utility model seal receptacle 8 is depending on partly cuing open structural representation.
the master of Fig. 4-the utility model supporting arm 15 looks partial cutaway structural representation.
the main TV structure schematic diagram of Fig. 5-the utility model Kato 17.
in accompanying drawing, 1. top connection, 2. goes up center-pole, 3. sealing drum cap, 4. upper spring, 5,501,502,503. sealing rings, 6. sealing drum, 7. seal head, 8. seal receptacle, 9. glue bowl, the fixing holder of 1O., 11. spacer rings, 12. end sockets, 13. back shafts, 14. cross springs, 15. supporting arms, 16. supporting masses, 17. Katos, 18. times center-poles, 19. lower springs, 20. switch wheels, 21. wheel shafts, 22. switch springs, 23. switch pins, 24. switch blocks, 25. switch body; A, A01, A02. side lack, B, B01. pilot hole, C, D, E, F. flowing hole, G gap, H. switch cavity, I. fixing hole, J. cannelure, K. axis hole, L. blind hole, M trough with straight angle, 0. centre bore.
The specific embodiment
below in conjunction with accompanying drawing, the utility model is described in further detail:
shown in accompanying drawing, eccentric separated-injection well deadweight type sealing device is by top connection 1, upper center-pole 2, sealing drum cap 3, upper spring 4, sealing ring 5, 501, 502, 503, sealing drum 6, seal head 7, seal receptacle 8, glue bowl 9, fixing holder 10, spacer ring 11, end socket 12, back shaft 13, cross spring 14, supporting arm 15, supporting mass 16, Kato 17, lower center-pole 18, lower spring 19, switch wheel 20, wheel shaft 21, switch spring 22, switch pin 23, switch block 24, switch body 25 forms, the top connection 1 of described eccentric separated-injection well deadweight type sealing device is threaded with upper center-pole 2, upper center-pole 2 covers have upper spring 4 through sealing drum cap 3 centre bores, be connected with seal head 7, sealing drum cap 3 screw thread tops are equipped with sealing ring 5 and are threaded with sealing drum 6, sealing drum 6 bottom covers have seal receptacle 8, and on seal receptacle 8, cover has glue bowl 9, fixing holder 10, spacer ring 11, sealing ring 502 is equipped with in the lower end of seal receptacle 8, the lower end of sealing drum 6 is provided with external screw thread, be threaded with end socket 12, the bottom of seal receptacle 8 is threaded with supporting mass 16, in the middle of supporting mass 16, be provided with symmetrical two supporting arms 15 being fixed by back shaft 13, between two supporting arms 15, be provided with cross spring 14, supporting mass 16 lower end centre bores are equipped with lower center-pole 18, the lower center-pole 18 upper ends Kato 17 that is threaded, intermediate sleeve has lower spring 19, Kato 17 is under the effect of lower spring 19, block or discharge two supporting arms 15, supporting mass 16 lower ends are threaded with conehead switch body 25, the lower end conehead of lower center-pole 18 coordinates with the gap G of switch wheel 20, in the right angle switch cavity H of switch wheel 20, be provided with the fixing switch block of switch pin 23 24, switch spring 22 is housed on switch pin 23.
eccentric separated-injection well deadweight type sealing device top connection 1 is connected to form a set of test macro with pressure gauge, and guarantees joint sealing.Test macro is gone into the well by steel wire or cable, below the presumptive test injection well downhole flow regulator degree of depth, stops transferring.Change into and carrying, carry to more than injection well downhole flow regulator, open supporting arm 15.Transfer test macro again, realize damming of corresponding injection well downhole flow regulator, corresponding pressure sensor institute measuring pressure is seal section bottom pressure.
after pressure test completes, above carry test macro, make steel wire or cable keep enough tension force, tension force increases with the increase of the upper and lower pressure reduction of seal section, makes sealing device pressure release, after pressure reduction disappears, test macro departs from injection well downhole flow regulator, by playing test macro in normal speed.
if there is multistage injection well downhole flow regulator to need test, by test macro down to the bottom of next injection well downhole flow regulator, above carry posttension spending bearing arm 15, operation, once completes the test of damming of injection well downhole flow regulators at different levels as stated above.Its each layer of top is without the operation that repeats again to open supporting arm 15, and only set, dams, proposes operation in test and pressure release.
Claims (6)
1. an eccentric separated-injection well deadweight type sealing device, comprise: top connection (1), upper center-pole (2), sealing drum cap (3), upper spring (4), sealing ring (5, 501, 502, 503), sealing drum (6), seal head (7), seal receptacle (8), glue bowl (9), fixing holder (10), spacer ring (11), end socket (12), back shaft (13), cross spring (14), supporting arm (15), supporting mass (16), Kato (17), lower center-pole (18), lower spring (19), switch wheel (20), wheel shaft (21), switch spring (22), switch pin (23), switch block (24), switch body (25), it is characterized in that: described eccentric separated-injection well deadweight type sealing device is cylindrical structure, top connection (1) is threaded with upper center-pole (2), upper center-pole (2) cover has upper spring (4) through sealing drum cap (3) centre bore, be connected with seal head (7), sealing drum cap (3) screw thread top is equipped with sealing ring (5) and is threaded with sealing drum (6), sealing drum (6) bottom cover has seal receptacle (8), the upper cover of seal receptacle (8) has glue bowl (9), fixing holder (10), spacer ring (11), sealing ring (502) is equipped with in the lower end of seal receptacle (8), the lower end of sealing drum (6) is provided with external screw thread, be threaded with end socket (12), the bottom of seal receptacle (8) is threaded with supporting mass (16), in the middle of supporting mass (16), be provided with symmetrical two supporting arms (15) of being fixed by back shaft (13), between two supporting arms (15), be provided with cross spring (14), supporting mass (16) lower end centre bore is equipped with lower center-pole (18), lower center-pole (18) the upper end Kato (17) that is threaded, intermediate sleeve has lower spring (19), Kato (17) is under the effect of lower spring (19), block or discharge two supporting arms (15), supporting mass (16) lower end is threaded with conehead switch body (25), the lower end conehead of lower center-pole (18) coordinates with the gap (G) of switch wheel (20), in the right angle switch cavity (H) of switch wheel (20), be provided with the fixing switch block (24) of switch pin (23), switch spring (22) is housed on switch pin (23).
2. eccentric separated-injection well deadweight type sealing device according to claim 1, is characterized in that: described top connection (1) side of being provided with lacks (A).
3. eccentric separated-injection well deadweight type sealing device according to claim 1, it is characterized in that: described sealing drum (6) center is provided with tapered hole, tapered hole cylindrical is provided with the frustum of a cone, the top of tapered hole is arranged with 2～4 flowing holes (C), bottom is provided with flowing hole (F), and lower end screw thread is provided with fixing hole (I).
4. eccentric separated-injection well deadweight type sealing device according to claim 1, is characterized in that: described seal receptacle (8) centre bore top is made as horn mouth, and centre is arranged with two rectangle round end flowing holes (D), and lower end is provided with cannelure (J).
5. eccentric separated-injection well deadweight type sealing device according to claim 1, it is characterized in that: the outer rim of described supporting arm (15) is the rectangular wedge-like structure of circular arc, top is provided with axis hole (K), and centre is with the hammer of axis hole (K) to being provided with blind hole (L), and lower end is provided with trough with straight angle (M).
6. eccentric separated-injection well deadweight type sealing device according to claim 1, is characterized in that: the conehead top of described lower center-pole (18) is provided with round platform, is arranged with two sides and lacks (A02) on round platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147219.XU CN203756113U (en) | 2014-03-28 | 2014-03-28 | Eccentric separate injection well dead weight type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147219.XU CN203756113U (en) | 2014-03-28 | 2014-03-28 | Eccentric separate injection well dead weight type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756113U true CN203756113U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420147219.XU Expired - Fee Related CN203756113U (en) | 2014-03-28 | 2014-03-28 | Eccentric separate injection well dead weight type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691843A (en) * | 2019-03-11 | 2020-09-22 | 中国石油天然气股份有限公司 | Oil pipe plug |
-
2014
- 2014-03-28 CN CN201420147219.XU patent/CN203756113U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691843A (en) * | 2019-03-11 | 2020-09-22 | 中国石油天然气股份有限公司 | Oil pipe plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150328 |
|
| EXPY | Termination of patent right or utility model |