CN201531237U - Steel wire rope well hole seal device - Google Patents
Steel wire rope well hole seal device Download PDFInfo
- Publication number
- CN201531237U CN201531237U CN2009202203503U CN200920220350U CN201531237U CN 201531237 U CN201531237 U CN 201531237U CN 2009202203503 U CN2009202203503 U CN 2009202203503U CN 200920220350 U CN200920220350 U CN 200920220350U CN 201531237 U CN201531237 U CN 201531237U
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- wire rope
- packing
- seal
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Abstract
The utility model discloses a steel wire rope well hole seal device which comprises a well hole connecting body, a rotary shaft, a rotary shaft connecting body, a stuffing box, an adjusting pressure sleeve, a gland, a rolling bearing, an upper seal stuffing and a lower seal stuffing, wherein the well hole connecting body is fixed on a well hole, the rotary shaft is arranged on the well hole connecting body through the rolling bearing, the rotary shaft can rotate around the shaft center of the steel wire rope in the well hole connecting body, and the rotary shaft, the rotary shaft connecting body, the stuffing box, the adjusting pressure sleeve and the gland are fixedly connected in turn, the upper seal stuffing and the lower seal stuffing are arranged in the stuffing box, and can relatively rotatablely slide with the steel wire rope under the premise of achieving well hole seal. Therefore, rotating torque of the steel wire rope, which is acted on the upper seal stuffing and the lower seal stuffing, is released through driving the gland, the rotary shaft connecting body, the rotary shaft and the rolling bearing to rotate around the shaft center of the steel wire rope by the stuffing box, the phenomena of twisting, spinning and the like during the upper stroke and the lower stroke are avoided, the abrasion of seal pieces is lowered, thereby prolonging the service span of the seal device.
Description
Technical field
The utility model relates to a kind of oil field oil salvage operation wire rope well mouth sealing device.
Background technology
In oilfield exploitation procedure, often to carry out a large amount of such as formation testing, drag for the swabbing operation of oil, oil gas well array liquid etc., these swabbing operation pumping strokes are generally all very long, basically be that the concrete a certain degree of depth is extracted into well head always from the down-hole, its distance generally has tens meters to hundreds of rice or even last km.Because the pumping stroke is oversize, swabbing operation can not adopt the polished rod of traditional sucker rod pumping machine, and the wire rope that can only adopt certain flexibility replaces polished rod, therefore the well head sealing problem is a great problem of puzzlement oil field swabbing operation always, well solve the wire rope sealing problem to field produces particularly the automation of field produces very significant meaning is arranged.
The formation testing at scene, oil field at present, drag for the well mouth sealing device that oily swabbing operation adopts and continued to use the basic structure of oil-extractor polish-rod sealing basically, promptly by compressing seal box, making has enough contact pressures to realize the well head sealing between seal box and the wire rope; Because wire rope self has helicla flute, realizing sealing need be than the bigger contact pressure of sealing polished rod, but when the contact pressure between seal and the wire rope reaches the well head seal request, the descending situation of being obstructed of swab can appear in dragging for the descending process of oil, so in order to satisfy the descending little requirement of range request resistance excessively of wire rope, manually-operated hydraulic pressure or pressurized seal are mostly adopted in the scene.General swabbing operation often needs two people's compounding practices to finish (one man operation winch a, people controls the well head sealing).
Concrete operating principle is: in the up process of wire rope (process that needs sealing), the special messenger starts handlance pumps into certain pressure in seal box hydraulic oil (or air pressure), and well head seal box and wire rope are compressed, and realizes the well head sealing; Up end, the down-hole swab was descending under the effect of counterweight after the well head discharge opeing finished, the well head sealing load that this moment, well head needed is very little, in order to reduce frictional resistance between seal box and the wire rope (resistance too senior general may make the swab can't be descending), need release the pressure that is added on the seal box, will in time open drain tap this moment and release the hydraulic oil in the seal box outside to reduce the frictional resistance between seal box and the wire rope.Realize swabbing operation so repeatedly.
Because the seal of existing wire rope sealing device can not rotate with wire rope, and take disposable sealing, determined that its effect is bad, causing the bad reason of sealing effectiveness is that wire rope is different from common polished rod, it self exists helicla flute, requires to have between wire rope and the seal higher extruding force just the better seal effect can be arranged; But, when the contact pressure between wire rope and the seal increases, in the process of wire rope upstream or downstream, must impose on the moment of torsion of a rotation of seal, the size of this moment of torsion depends on the contact pressure between wire rope and the seal, and big more this rotation torque of contact pressure is also big more; And the seal in the wire rope well head seal that adopts at present is staticly not change, so this rotation torque makes that with reaction wire rope takes place to beat to turn round on wire rope, wire drawing can take place in the time of serious, too big in addition contact pressure can be aggravated the wearing and tearing of seal box, so the contact pressure between wire rope and the seal again can not be too big, Just because of this, the sealing effectiveness of this sealing device is bad, can see at the scene on winch, carry in the well head sealing relatively large leakage phenomenon can appear.
Therefore, guaranteeing to certainly exist a bigger active force between wire rope and the seal under the good situation of well head sealing, will cause wire rope to beat the situation of turning round or reeling off raw silk from cocoons at work, but also can aggravate the wearing and tearing of seal, shorten the application life of sealing device.
The utility model content
In view of this, the utility model provides a kind of wire rope well mouth sealing device, and wire rope occurs beating the situation of turning round or reeling off raw silk from cocoons in order to avoid at work, and avoids sealing part abrasion, thereby prolongs the application life of sealing device.
The utility model embodiment is achieved in that
A kind of wire rope well mouth sealing device comprises well head connector, axis of rotation, axis of rotation connector, packing box, adjusting gland, pressure cap, rolling bearing, goes up sealed packing and lower seal packing;
Described well head connector is fixed on the well head, and described axis of rotation is arranged on the described well head connector by described rolling bearing, and described axis of rotation can rotate around the wire rope axle center in described well head connector;
Be fixedly connected sequentially between described axis of rotation, described axis of rotation connector, described packing box, described adjusting gland and the described pressure cap;
Described upward sealed packing and described lower seal packing are arranged in the described packing box, and the described sealed packing of going up can relative rotational slide with wire rope under the prerequisite that realizes the well head sealing with described lower seal packing.
Preferably, in above-mentioned wire rope well mouth sealing device, the bottom of described lower seal packing is provided with the down stroke buffer spring.
Preferably, in above-mentioned wire rope well mouth sealing device, described top of going up sealed packing is provided with the packing pressure cap.
Preferably, in above-mentioned wire rope well mouth sealing device, the internal cavities of described adjusting gland is provided with scrapes oil jacket, and the described oil jacket of scraping is fixed on described going up on the packing pressure cap by frizing cover packing ring and support ring.
Preferably, in above-mentioned wire rope well mouth sealing device, the correspondence position of described support ring and described adjusting gland is provided with porose, and place, described hole is provided with drainage tube, the inner chamber and extraneous air UNICOM of described drainage tube in order to realize described adjusting gland.
Preferably, in above-mentioned wire rope well mouth sealing device, described axis of rotation lower end is provided with mechanical seal and mechanical seal adjusting nut.
Preferably, in above-mentioned wire rope well mouth sealing device, adopt screw thread fixedly connected successively between described axis of rotation, described axis of rotation connector, described packing box, described adjusting gland and the described pressure cap.
Compared with prior art, the technical scheme that provides of the utility model embodiment has the following advantages and characteristics:
By above as can be known, because axis of rotation is arranged on the well head connector by rolling bearing, axis of rotation can rotate around the wire rope axle center in the well head connector, and axis of rotation, the axis of rotation connector, packing box, regulate between gland and the pressure cap and be fixedly connected sequentially, so wire rope acts on interior last sealed packing of seal box and the rotation torque on the lower seal packing, drive pressure cap by packing box, the axis of rotation connector, axis of rotation and rolling bearing rotate around the wire rope axle center and are released, avoided wire rope last, beating in the down stroke process turned round, phenomenon such as reel off raw silk from cocoons, and reduced the wearing and tearing of seal, thereby prolonged the application life of sealing device.
Description of drawings
In order to be illustrated more clearly in the utility model or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of wire rope well mouth sealing device provided by the utility model.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, a kind of wire rope well mouth sealing device, comprise well head connector 20, axis of rotation 16, axis of rotation connector 11, packing box 9, regulate gland 3, pressure cap 1, rolling bearing 14, go up sealed packing 8 and lower seal packing 10, wherein, well head connector 20 is fixed on the well head, axis of rotation 16 is arranged on the well head connector 20 by rolling bearing 14, and axis of rotation 16 can rotate around the wire rope axle center in well head connector 20; Adopt screw thread fixedly connected successively between axis of rotation 16, axis of rotation connector 11, packing box 9, adjusting gland 3 and the pressure cap 1; Last sealed packing 8 and lower seal packing 10 are arranged in the packing box 9, and upward sealed packing 8 can relative rotational slide with wire rope under the prerequisite that realizes the well head sealing with lower seal packing 10.Lower seal packing 10 is that cone angle is upwards installed, and is used for sealing at the wire rope up stroke; Last sealed packing 8 is that cone angle is installed downwards, is used in wire rope down stroke hermetic seal effect.
This kind structure can make wire rope act on last sealed packing 8 in the packing box 9 and the rotation torque on the lower seal packing 10, rotation is released around the wire rope axle center to drive pressure cap 1, axis of rotation connector 11, axis of rotation 16 and rolling bearing 14 by packing box 9, avoided wire rope beating in upper and lower stroke process phenomenon such as to turn round, reel off raw silk from cocoons, and reduced the wearing and tearing of seal, thereby prolonged the application life of sealing device.
In the embodiment shown in fig. 1, the bottom of lower seal packing 10 is provided with down stroke buffer spring 12, screw degree by the screw thread of regulating between packing box 9 and the axis of rotation connector 11, regulate the degree that compresses between lower seal packing 10 and the wire rope and the decrement of down stroke buffer spring 12.The top of last sealed packing 8 is provided with packing pressure cap 7, screws degree by the screw thread of regulating packing box 9 and regulate between the gland 3, can compress sealed packing 8 by last packing pressure cap 7.Axis of rotation 16 lower ends are provided with mechanical seal 18 and mechanical seal adjusting nut 19.The degree that screws of the upper and lower screw thread by regulating packing box 9 can be regulated the contact pressure between sealed packing 8 and lower seal packing 10 and the wire rope, thereby the fluid that sealing makes progress along the wire rope groove, the mechanical seal 18 of axis of rotation 16 lower ends has simultaneously stoped the passage of borehole fluid through the leakage of axis of rotation 16 outsides, thereby reaches the effect of sealing.
In order to increase the wearing and tearing that sealing effectiveness reduces seal, can adopt secondary seal or multi-stage sealed.Present embodiment adopts the secondary seal structure, wherein lower seal packing 10 is a primary seal, this packing has utilized borehole pressure self sealss principle simultaneously: in the up process of wire rope, drag for oily machine and be in well head oil extraction state, requirement sealing load height, the pulling force that this moment, lower seal packing 10 was made progress by wire rope, extruding lower seal packing 10 compresses packing box 9; Well inner high voltage fluid enters the bottom of lower seal packing 10 through the centre bore of axis of rotation 16 simultaneously, lower seal packing 10 is produced an active force upwards, because the cone angle effects of lower seal packing 10 and packing box 9 makes lower seal packing 10 further compress wire rope and realizes effectively sealing.
The descending process of wire rope is the process that swab is transferred, borehole pressure is lower, require sealed packing as far as possible little simultaneously to the frictional resistance between the wire rope, wire rope has downward pulling force to lower seal packing 10 in the descending process of wire rope, make sealed packing that the trend of downward motion be arranged, thereby compression down stroke buffer spring 12, make the pressure between lower seal packing 10 and the packing box 9 reduce, thereby reduced the contact pressure between sealed packing and the wire rope, simultaneously, the pressure of borehole fluid is lower in descending process, act on the also reduction greatly of fluid pressure that lower seal packing 10 bottoms make progress, thereby further reduced the contact pressure between lower seal packing 10 and the wire rope, thereby reduced the frictional resistance in the descending process of wire rope greatly, reduced the wearing and tearing of wire rope, increased the application life of seal sealed packing.Upward sealed packing 8 of the present utility model is mainly used in the sealing function in the descending process, and it compresses the thrust that degree will be significantly smaller than lower seal packing 10 in advance.
In the embodiment shown in fig. 1, the internal cavities of regulating gland 3 is provided with scrapes oil jacket 2, scrapes oil jacket 2 and is fixed on the packing pressure cap 7 by frizing cover packing ring 4 and support ring 6.The correspondence position of support ring 6 and adjusting gland 3 is provided with porose, and the place, hole is provided with drainage tube 5, the inner chamber and extraneous air UNICOM of drainage tube 5 in order to realize described adjusting gland 3.
Should not adopt disposable sealing dead for wire rope sealing, and certain leakage rate should be arranged, scrape oil jacket 2 and be used for the greasy dirt that may carry on the cleaning wire rope.So in operate as normal, still allow certain leakage between packing of the present utility model and the wire rope; To reduce the frictional resistance and the application life that increases seal between wire rope and the seal.In the up process of wire rope, allow certain leakage between wire rope and the sealed packing, the fluid of leakage enters into the cavity that the centre of gland 3 is regulated on top through the wire rope helicla flute, discharges through drainage tube 5; Have certain gas in descending process, the gas of generation is discharged through drainage tube 5 equally.
In the embodiment shown in fig. 1, rolling bearing 14a is provided with bearing gland 13, and bearing gland 13 is used for rolling bearing 14a is fixed, and bearing gland 13 is fixed on the well head connector 20 by bearing gland locking nut 15; Rolling bearing 14b bottom is provided with bearing support 17, and bearing support 17 is used for fixing rolling bearing 14b.
In sum, the utility model mainly comprises pivoting mechanism, hydraulic pressure self sealss mechanism and secondary seal mechanism.
Pivoting mechanism is: sealed packing can rotate freely along with moving up and down of wire rope, when seal along with wire rope in relative rotation the time, just can well solve wire rope and beat and turn round the phenomenon of reeling off raw silk from cocoons, also can reduce the wearing and tearing of wire rope greatly simultaneously seal;
Secondary seal mechanism is: adopt the high and low pressure secondary seal.High pressure sealing is upper and lower sealed packing, plays main sealing function, requires to have certain sealing effectiveness, certain leakage rate is arranged again simultaneously, the liquid that leaks enters the secondary seal box, to the wire rope lubrication, the wearing and tearing of seal is increased application life of seal to extenuate wire rope; Low pressure seal is the oil jacket of scraping at top, is used for the liquid that the sealed high pressure sealing leak is come out, and the liquid that leaks out from high pressure sealing is discharged through drainage tube in the low pressure seal box, the main effect of low pressure seal be on the cleaning wire rope with oil;
Hydraulic pressure self sealss mechanism is: consider on the wire rope, the sealing load that requires in the descending process is widely different, sealing device of the present utility model has made full use of the pressure of liquid in the well and has realized self sealss, make the contact pressure between up stroke packing and the wire rope increase with the increase of sealing load in the well, thereby improved sealing effectiveness, and in descending process, sealing load reduces, contact pressure between sealed packing and the wire rope reduces, sealed packing presses down buffer spring under the drive of wire rope simultaneously, make the contact pressure between sealed packing and the wire rope further reduce, thereby reduced the frictional resistance between packing and the wire rope greatly, increased the application life of seal greatly.
Need to prove that embodiment shown in Figure 1 is the preferred embodiment that the utility model is introduced, those skilled in the art can design more embodiment on this basis fully, therefore do not give unnecessary details herein.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. a wire rope well mouth sealing device is characterized in that, comprises well head connector, axis of rotation, axis of rotation connector, packing box, adjusting gland, pressure cap, rolling bearing, goes up sealed packing and lower seal packing;
Described well head connector is fixed on the well head, and described axis of rotation is arranged on the described well head connector by described rolling bearing, and described axis of rotation can rotate around the wire rope axle center in described well head connector;
Be fixedly connected sequentially between described axis of rotation, described axis of rotation connector, described packing box, described adjusting gland and the described pressure cap;
Described upward sealed packing and described lower seal packing are arranged in the described packing box, and the described sealed packing of going up can relative rotational slide with wire rope under the prerequisite that realizes the well head sealing with described lower seal packing.
2. wire rope well mouth sealing device according to claim 1 is characterized in that the bottom of described lower seal packing is provided with the down stroke buffer spring.
3. wire rope well mouth sealing device according to claim 1 is characterized in that, described top of going up sealed packing is provided with the packing pressure cap.
4. wire rope well mouth sealing device according to claim 3 is characterized in that, the internal cavities of described adjusting gland is provided with scrapes oil jacket, and the described oil jacket of scraping is fixed on described going up on the packing pressure cap by frizing cover packing ring and support ring.
5. wire rope well mouth sealing device according to claim 4, it is characterized in that, the correspondence position of described support ring and described adjusting gland is provided with porose, and place, described hole is provided with drainage tube, the inner chamber and extraneous air UNICOM of described drainage tube in order to realize described adjusting gland.
6. wire rope well mouth sealing device according to claim 1 is characterized in that, described axis of rotation lower end is provided with mechanical seal and mechanical seal adjusting nut.
7. wire rope well mouth sealing device according to claim 1 is characterized in that, adopts screw thread fixedly connected successively between described axis of rotation, described axis of rotation connector, described packing box, described adjusting gland and the described pressure cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202203503U CN201531237U (en) | 2009-10-29 | 2009-10-29 | Steel wire rope well hole seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202203503U CN201531237U (en) | 2009-10-29 | 2009-10-29 | Steel wire rope well hole seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531237U true CN201531237U (en) | 2010-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202203503U Expired - Fee Related CN201531237U (en) | 2009-10-29 | 2009-10-29 | Steel wire rope well hole seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531237U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697167A (en) * | 2014-01-06 | 2014-04-02 | 上海金泰工程机械有限公司 | Rotating wire sling sealing device and manufacturing method of sealing sleeve thereof |
| CN104453767B (en) * | 2014-11-21 | 2017-02-22 | 西南石油大学 | Wellhead sealing tool for mechanical logging in gas drilling |
| CN106761526A (en) * | 2016-12-30 | 2017-05-31 | 天津中车机辆装备有限公司 | Steel wire rope pumping return channel |
| CN107503705A (en) * | 2017-09-30 | 2017-12-22 | 罗淮东 | Pumping blowout-preventing device and the pumping system with the pumping blowout-preventing device |
| CN111663917A (en) * | 2020-07-22 | 2020-09-15 | 吕学民 | Underground dynamic sealing device of ultra-long stroke oil pumping unit |
| CN111677484A (en) * | 2020-07-22 | 2020-09-18 | 吕学民 | Intelligent ultra-long stroke oil production system |
-
2009
- 2009-10-29 CN CN2009202203503U patent/CN201531237U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697167A (en) * | 2014-01-06 | 2014-04-02 | 上海金泰工程机械有限公司 | Rotating wire sling sealing device and manufacturing method of sealing sleeve thereof |
| CN103697167B (en) * | 2014-01-06 | 2017-01-18 | 上海金泰工程机械有限公司 | Rotating wire sling sealing device and manufacturing method of sealing sleeve thereof |
| CN104453767B (en) * | 2014-11-21 | 2017-02-22 | 西南石油大学 | Wellhead sealing tool for mechanical logging in gas drilling |
| CN106761526A (en) * | 2016-12-30 | 2017-05-31 | 天津中车机辆装备有限公司 | Steel wire rope pumping return channel |
| CN107503705A (en) * | 2017-09-30 | 2017-12-22 | 罗淮东 | Pumping blowout-preventing device and the pumping system with the pumping blowout-preventing device |
| CN111663917A (en) * | 2020-07-22 | 2020-09-15 | 吕学民 | Underground dynamic sealing device of ultra-long stroke oil pumping unit |
| CN111677484A (en) * | 2020-07-22 | 2020-09-18 | 吕学民 | Intelligent ultra-long stroke oil production system |
| CN111677484B (en) * | 2020-07-22 | 2023-08-18 | 梅河口市弘业无缝钢管有限公司 | Intelligent ultra-long stroke oil extraction production system |
| CN111663917B (en) * | 2020-07-22 | 2023-10-03 | 梅河口市弘业无缝钢管有限公司 | Underground dynamic sealing device of ultra-long stroke pumping unit |
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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: 20100721 Termination date: 20111029 |