CN106014321A - Polished rod sealing device of retractable rod pumped well - Google Patents
Polished rod sealing device of retractable rod pumped well Download PDFInfo
- Publication number
- CN106014321A CN106014321A CN201610634722.1A CN201610634722A CN106014321A CN 106014321 A CN106014321 A CN 106014321A CN 201610634722 A CN201610634722 A CN 201610634722A CN 106014321 A CN106014321 A CN 106014321A
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- Prior art keywords
- polished rod
- retracting cylinder
- cylinder
- sealing device
- stud
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- 238000007789 sealing Methods 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 34
- 239000004744 fabric Substances 0.000 claims description 27
- 238000012856 packing Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 238000003618 dip coating Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 6
- 238000005987 sulfurization reaction Methods 0.000 claims description 6
- 238000009941 weaving Methods 0.000 claims description 6
- 229920004934 Dacron® Polymers 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000002788 crimping Methods 0.000 abstract 5
- 230000007774 longterm Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a polished rod sealing device of a retractable rod pumped well. The polished rod sealing device of the retractable rod pumped well consists of a square clip, a polished rod sealing assembly, an upper crimping head assembly, a retractable barrel and a lower crimping head assembly, wherein the lower end of the retractable barrel is connected with a wellhead device through the lower crimping head assembly; the upper end of the retractable barrel is connected with a polished rod through the upper crimping head assembly; the polished rod sealing assembly and the square clip are arranged at the top of the upper crimping head assembly. By the sealed retractable barrel, the efficient sealing effect of a wellhead is achieved, the wellhead can bear 4 MPa pressure to a maximum extent, contact friction between the retractable barrel and the polished rod does not exist so that abrasion is avoided, and long-term working performance is guaranteed. Meanwhile, pollution of the wellhead can be completely eradicated effectively, and manual adjustment and maintenance are not required. The polished rod sealing device of the retractable rod pumped well has the advantages of good sealing effect, simplicity in preparation, convenience in use, safety and reliability, low comprehensive cost and the like.
Description
Technical field
The invention belongs to oil equipment technical field, a kind of telescopic polished rod sealing device for rod-pumped well.
Background technology
In oilfield development process, rod-pumped well is main winning apparatus, drives deep well pump work extraction underground petroleum by oil pumper and sucker rod.On-the-spot employing packing box seals as well mouth sealing device, the packing of the annular space filled rubber material between polished rod and packing box.When oil pumper runs, close sliding friction is produced between polished rod and packing, owing to production fluid has certain corrosivity, make polished rod surface produce substantial amounts of pit or groove, packing is had extremely strong abrasive action, causes the packing well damage used by well head, it is thus desirable to often packing safeguarded or change, once safeguard, change and will make a large amount of leakage of oil of well head not in time, both added labor intensity, and caused again environmental pollution.
Summary of the invention
It is an object of the invention to provide a kind of have good sealing effect, voltage endurance capability high, without frictional dissipation, life-time service without the telescopic polished rod sealing device for rod-pumped well of artificial regulation with maintenance.
Realize the purpose of the present invention to be adopted the technical scheme that: this telescopic polished rod sealing device for rod-pumped well is made up of square clamp, polished rod seal assembly, upper crimp head assembly, retracting cylinder, lower crimp head assembly, wherein, the lower end of retracting cylinder is connected with wellhead assembly by lower crimp head assembly, upper end is connected with polished rod by upper crimp head assembly, and upper crimp head assembly top is provided with polished rod seal assembly and side's clamp.
Described retracting cylinder is soft fabric or the wave structure of silk weaving material, and in it, interval is laid with several steel loops.
Thickness after the contraction of described retracting cylinder and the lenth ratio after stretching are 1 8～15.
Described upper crimp head assembly includes upper stud, upper platen and upper pressing cap, wherein, the centre of upper stud is provided with the through hole for installing polished rod, the top of this through hole is different diameter hole, the bottom of upper stud is provided with, with end round platform, round platform top, the end, the upper platen threadeded with upper stud, is respectively provided with crimp retracting cylinder and the teeth groove being mutually twisted on upper platen with end round platform contact surface, upper pressing cap is connected with upper stud, and is positioned at platen top and contacts connection with upper platen.
Described lower crimp head assembly includes lower stud, pressing disc and lower pressing cap, wherein, the upper end of lower stud is with tip circle platform, tip circle platform bottom is provided with the pressing disc threadeded with lower stud, pressing disc with tip circle platform contact surface are respectively provided with crimp retracting cylinder and the teeth groove being mutually twisted, lower pressing cap is connected with lower stud, and is positioned at pressing disc bottom and contacts connection with pressing disc.
Described polished rod seal assembly includes packing, Glan and seal pressure cap, and wherein, packing is positioned in the different diameter hole at upper stud top, and Glan contacts with packing, and top is equipped with the seal pressure cap threadeded with upper stud.
In the telescopic polished rod sealing device for rod-pumped well of the present invention, the preparation method of retracting cylinder is as follows:
When preparing retracting cylinder, the material according to pressure and selection is different, divides normal pressure and has pressure retracting cylinder, wherein:
One, the preparation of constant-pressure telescopic cylinder:
(1) select band cloth springy, require size according to design, cut the circular sheet material making several equal sized centres with centre bore, standby；
(2) take and cut the circular sheet material made, by each circular sheet material alignment, first the inner port edge of disk two-by-two is stitched into assembly, the assembly sewed up superposition one by one is sewed the outward flange contacted again, make it sew up to connect into the corrugated that spread length is 1～6 meter and stretch cloth cylinder, and it is sewed with the uniwafer for being connected with upper and lower crimp head respectively at the two ends outward flange of cloth cylinder, in the outward flange suture of each circular sheet material, finally install the steel loop that one cross-sectional diameter of stitching is 2～4mm additional, make folding flexible cloth cylinder；
(3) put into equipped with in the vacuum tank of liquid polyurethane rubber after the flexible cloth cylinder sewed being folded, carrying out overall dip-coating at normal temperatures, time of immersion is 3～5 minutes, and dip-coating is taken out the most afterwards, remove redundant rubber stock by fashion of extrusion, more flexible cloth cylinder is hung drawing and setting and dries；
(4) the flexible cloth cylinder after drying is inserted in baking oven and is vulcanized in circulating air, and curing temperature is 90～100 DEG C, and cure time is 3～5 hours, and sulfuration is constant-pressure telescopic cloth cylinder finished product after taking out.
Two, have pressure retracting cylinder preparation:
(1) use the dacron thread of high intensity or nylon yarn be directly made on circular weaving machine thickness be 2～4mm, spread length be the corrugated retracting cylinder of 1～6 meter, the inwall at each major diameter position of retracting cylinder is sewed with the steel loop that cross-sectional diameter is 2～4mm, makes folding seamless retracting cylinder；
(2) put in the vacuum tank equipped with polyurethane dip-coating liquid after the seamless retracting cylinder made in (1) being folded, carry out overall dip-coating at normal temperatures, time of immersion is 3～5 minutes, dip-coating is taken out the most afterwards, remove redundant rubber stock by fashion of extrusion, more seamless retracting cylinder is hung drawing and setting and dries；
(3) the seamless retracting cylinder after drying is inserted in baking oven and is vulcanized in circulating air, and curing temperature is 90～100 DEG C, and cure time is 3～5 hours, and sulfuration has been pressure retracting cylinder finished product after taking out.
The telescopic polished rod sealing device for rod-pumped well made according to such scheme, achieving the efficient sealed effect of well head, therein have pressure retracting cylinder maximum can bear 4MPa pressure, contactless frottage between retracting cylinder and polished rod, do not wear and tear, it is possible to ensure permanent service behaviour.In addition the packing in black box is actionless relative to polished rod, there is not sliding friction, it is therefore not necessary to often safeguard packing or change, it is possible to reach the practical function that polished rod seal is good.Testing through well site, the service life of this device was changed without maintenance up to 2～3 years, and was accomplished by maintenance the service life of traditional packing_seal device 1～3 months or changes.The two is compared, the technique effect that the present invention is reached has significant progressive, and in use can effectively stop well head and pollute, achieve without artificial regulation and the purpose safeguarded, there is good sealing effect, prepare the advantages such as simple, esy to use, safe and reliable, length in service life, integrated cost are low.
Accompanying drawing explanation
Fig. 1 is the constant-pressure telescopic cylinder of the present invention structural representation when polished rod of pumping well up stroke；
Fig. 2 is the constant-pressure telescopic cylinder of the present invention structural representation when polished rod of pumping well down stroke；
Fig. 3 is that having of the present invention presses telescopic cylinder structure schematic diagram；
Fig. 4 is upper crimp head assembly and the structural representation of polished rod seal assembly of the present invention；
Fig. 5 is the structural representation of the lower crimp head assembly of the present invention.
Detailed description of the invention
Referring to Fig. 1,2,3, the telescopic polished rod sealing device for rod-pumped well of the present invention, it is made up of side's clamp 1, polished rod seal assembly, upper crimp head assembly, retracting cylinder 2, lower crimp head assembly, wherein, retracting cylinder 2 is the wave structure of soft fabric or silk weaving material, its lower end is connected with wellhead assembly 3 by lower crimp head assembly, and upper end is connected with polished rod 4 by upper crimp head assembly, and upper crimp head assembly top is provided with polished rod seal assembly and side's clamp 1.In described retracting cylinder, interval is laid with steel loop 5, the thickness after retracting cylinder 2 contraction and the lenth ratio after stretching is 1 8～12.
Referring to Fig. 4, described upper crimp head assembly includes upper stud 6, upper platen 7 and upper pressing cap 8, wherein, the centre of upper stud 6 is provided with the through hole 9 for installing polished rod, the top of this through hole 9 is different diameter hole, the bottom of upper stud 6 is with end round platform 10, end round platform 10 top is provided with the upper platen 7 threadeded with upper stud 6, it is respectively provided with crimp retracting cylinder 2 and the teeth groove 11 being mutually twisted on end round platform 10 contact surface at upper platen 7, upper pressing cap 8 is connected with upper stud 6, and is positioned at platen 7 top and contacts connection with upper platen 7.Described polished rod seal assembly includes packing 17, Glan 18 and seal pressure cap 19, and wherein, packing 17 is positioned in the different diameter hole at upper stud 6 top, and Glan 18 contacts with packing 17, and top is equipped with the seal pressure cap 19 threadeded with upper stud 6.
Referring to Fig. 5, described lower crimp head assembly includes lower stud 12, pressing disc 13 and lower pressing cap 14, wherein, the upper end of lower stud 12 is with tip circle platform 15, tip circle platform 15 bottom is provided with the pressing disc 13 threadeded with lower stud 12, being respectively provided with crimp retracting cylinder and the teeth groove 16 being mutually twisted on pressing disc 13 with tip circle platform 15 contact surface, lower pressing cap 14 is connected with lower stud 12, and is positioned at pressing disc 13 bottom and contacts connection with pressing disc 13.
When preparing retracting cylinder, different according to the material of well head pressure and selection, point normal pressure and have pressure retracting cylinder, normal pressure oil well to refer to its production fluid to flow directly in elevated tank or buried pond, be connected with air, during the use of constant-pressure telescopic cylinder, pressure experienced is almost nil；Production fluid transports to measuring station or gathering station or multi-purpose station by pipe long-distance to have force feed well to refer to, well head must have certain back pressure, it is often the case that 0.2～1.0MPa, when needs checking oil well pipe seals, pressure commonly reaches 2～3MPa, and having pressure retracting cylinder in use, maximum can bear 4MPa pressure.
Retracting cylinder 2 in Fig. 1 is constant-pressure telescopic cylinder, and the retracting cylinder 2a in Fig. 3 is to have pressure retracting cylinder
In the telescopic polished rod sealing device for rod-pumped well of the present invention, the preparation method of retracting cylinder is as follows:
When preparing retracting cylinder, the material according to pressure and selection is different, divides normal pressure and has pressure retracting cylinder, wherein:
One, the preparation of constant-pressure telescopic cylinder:
(1) select band cloth springy, require size according to design, cut the circular sheet material making several equal sized centres with centre bore, standby；
(2) take and cut the circular sheet material made, by each circular sheet material alignment, first the inner port edge of disk two-by-two is stitched into assembly, the assembly sewed up superposition one by one is sewed the outward flange contacted again, make it sew up to connect into the corrugated that spread length is 1～6 meter and stretch cloth cylinder, and it is sewed with the uniwafer for being connected with upper and lower crimp head respectively at the two ends outward flange of cloth cylinder, in the outward flange suture of each circular sheet material, finally install the steel loop that one cross-sectional diameter of stitching is 2～4mm additional, make folding flexible cloth cylinder；
(3) put into equipped with in the vacuum tank of liquid polyurethane rubber after the flexible cloth cylinder sewed being folded, carrying out overall dip-coating at normal temperatures, time of immersion is 3～5 minutes, and dip-coating is taken out the most afterwards, remove redundant rubber stock by fashion of extrusion, more flexible cloth cylinder is hung drawing and setting and dries；
(4) the flexible cloth cylinder after drying is inserted in baking oven and is vulcanized in circulating air, and curing temperature is 90～100 DEG C, and cure time is 3～5 hours, and sulfuration is constant-pressure telescopic cloth cylinder finished product after taking out.
Two, have pressure retracting cylinder preparation:
(1) use the dacron thread of high intensity or nylon yarn be directly made on circular weaving machine thickness be 2～4mm, spread length be the corrugated retracting cylinder of 1～6 meter, the inwall at each major diameter position of retracting cylinder is sewed with the steel loop that cross-sectional diameter is 2～4mm, makes folding seamless retracting cylinder；
(2) put in the vacuum tank equipped with polyurethane dip-coating liquid after the seamless retracting cylinder made in (1) being folded, carry out overall dip-coating at normal temperatures, time of immersion is 3～5 minutes, dip-coating is taken out the most afterwards, remove redundant rubber stock by fashion of extrusion, more seamless retracting cylinder is hung drawing and setting and dries；
(3) the seamless retracting cylinder after drying is inserted in baking oven and is vulcanized in circulating air, and curing temperature is 90～100 DEG C, and cure time is 3～5 hours, and sulfuration has been pressure retracting cylinder finished product after taking out.
During use, on the tip circle platform 15 of the lower crimp head that the lower end of retracting cylinder 2 is set in lower stud 12, again pressing disc 13 and lower pressing cap 14 are threaded on lower stud 12, pressing disc 13 is compressed by screwing lower pressing cap 14, making the bottom surface of tip circle platform 15 and teeth groove 16 occlusion of pressing disc 13 compress retracting cylinder 2, the most lower crimp head is connected by entirety with wellhead assembly 3；The upper end of retracting cylinder 2 is set in the end round platform 10 of the upper crimp head of upper stud 6, again upper platen 7 and upper pressing cap 8 are being threaded on upper stud 6, upper platen 7 is compressed by screwing upper pressing cap 8, teeth groove 11 occlusion making end round platform 10 and upper platen 7 compresses retracting cylinder 2, packing 17 is installed additional in the reducing through hole 9 on upper stud 6 top, it is inserted in Glan 18 and fastening pressure cap 19 and tightens, playing the effect of sealing, fixing at fastening pressure cap 19 top installation side clamp 1.
Starting oil pumper to run, when polished rod 4 is up, drive retracting cylinder 2 to extend, well liquid is partially into retracting cylinder 2 inner chamber, is allowed to full；When polished rod 4 is descending, Fang Kazi 1 and upper platen 7 compress retracting cylinder 2 and are allowed to shorten, chamber pressure rises, and when exceeding Oil Well Back Pressure, the well liquid in retracting cylinder 2 is pressed into back station pipeline by the tee T of wellhead assembly, on retracting cylinder, crimp head is followed polished rod 4 and is moved up and down, form the confined space of a Retractable, thus realize wellhead sealing effect, between retracting cylinder 2 and polished rod 4, be not in contact with frottage, do not produce abrasion, permanent service behaviour can be kept.And the packing 17 in black box is actionless relative to polished rod 4, there is not sliding friction, it is therefore not necessary to often packing 17 safeguarded or change, it is possible to reach the practical function of polished rod 4 favorable sealing property.
Claims (7)
1. a telescopic polished rod sealing device for rod-pumped well, it is characterized in that: this telescopic polished rod sealing device for rod-pumped well is made up of square clamp, polished rod seal assembly, upper crimp head assembly, retracting cylinder, lower crimp head assembly, wherein, the lower end of retracting cylinder is connected with wellhead assembly by lower crimp head assembly, upper end is connected with polished rod by upper crimp head assembly, and upper crimp head assembly top is provided with polished rod seal assembly and side's clamp.
Telescopic polished rod sealing device for rod-pumped well the most according to claim 1, it is characterised in that: described retracting cylinder is soft fabric or the wave structure of silk weaving material, and in it, interval is laid with several steel loops.
Telescopic polished rod sealing device for rod-pumped well the most according to claim 1, it is characterised in that: the thickness after the contraction of described retracting cylinder and the lenth ratio after stretching are 1 8～15.
Telescopic polished rod sealing device for rod-pumped well the most according to claim 1, it is characterized in that: described upper crimp head assembly includes upper stud, upper platen and upper pressing cap, wherein, the centre of upper stud is provided with the through hole for installing polished rod, the top of this through hole is different diameter hole, the bottom of upper stud is with end round platform, round platform top, the end is provided with the upper platen threadeded with upper stud, upper platen with end round platform contact surface are respectively provided with crimp retracting cylinder and the teeth groove being mutually twisted, upper pressing cap is connected with upper stud, and be positioned at platen top and contact connection with upper platen.
Telescopic polished rod sealing device for rod-pumped well the most according to claim 1, it is characterized in that: described lower crimp head assembly includes lower stud, pressing disc and lower pressing cap, wherein, the upper end of lower stud is with tip circle platform, tip circle platform bottom is provided with the pressing disc threadeded with lower stud, being respectively provided with crimp retracting cylinder and the teeth groove being mutually twisted on pressing disc and tip circle platform contact surface, lower pressing cap is connected with lower stud, and is positioned at pressing disc bottom and contacts connection with pressing disc.
Telescopic polished rod sealing device for rod-pumped well the most according to claim 1, it is characterized in that: described polished rod seal assembly includes packing, Glan and seal pressure cap, wherein, packing is positioned in the different diameter hole at upper stud top, Glan contacts with packing, and top is equipped with the seal pressure cap threadeded with upper stud.
7. the preparation method for the telescopic polished rod sealing device for rod-pumped well described in claim 1, it is characterised in that: in this device, the preparation method of retracting cylinder is as follows:
When preparing retracting cylinder, the material according to pressure and selection is different, divides normal pressure and has pressure retracting cylinder, wherein:
One, the preparation of constant-pressure telescopic cylinder:
(1) select band cloth springy, require size according to design, cut the circular sheet material making several equal sized centres with centre bore, standby；
(2) take and cut the circular sheet material made, by each circular sheet material alignment, first the inner port edge of disk two-by-two is stitched into assembly, the assembly sewed up superposition one by one is sewed the outward flange contacted again, make it sew up to connect into the corrugated that spread length is 1～6 meter and stretch cloth cylinder, and it is sewed with the uniwafer for being connected with upper and lower crimp head respectively at the two ends outward flange of cloth cylinder, in the outward flange suture of each circular sheet material, finally install the steel loop that one cross-sectional diameter of stitching is 2～4mm additional, make folding flexible cloth cylinder；
(3) put into equipped with in the vacuum tank of liquid polyurethane rubber after the flexible cloth cylinder sewed being folded, carrying out overall dip-coating at normal temperatures, time of immersion is 3～5 minutes, and dip-coating is taken out the most afterwards, remove redundant rubber stock by fashion of extrusion, more flexible cloth cylinder is hung drawing and setting and dries；
(4) the flexible cloth cylinder after drying is inserted in baking oven and is vulcanized in circulating air, and curing temperature is 90～100 DEG C, and cure time is 3～5 hours, and sulfuration is constant-pressure telescopic cloth cylinder finished product after taking out.
Two, have pressure retracting cylinder preparation:
(1) use the dacron thread of high intensity or nylon yarn be directly made on circular weaving machine thickness be 2～4mm, spread length be the corrugated retracting cylinder of 1～6 meter, the inwall at each major diameter position of retracting cylinder is sewed with the steel loop that cross-sectional diameter is 2～4mm, makes folding seamless retracting cylinder；
(2) put in the vacuum tank equipped with polyurethane dip-coating liquid after the seamless retracting cylinder made in (1) being folded, carry out overall dip-coating at normal temperatures, time of immersion is 3～5 minutes, dip-coating is taken out the most afterwards, remove redundant rubber stock by fashion of extrusion, more seamless retracting cylinder is hung drawing and setting and dries；
(3) the seamless retracting cylinder after drying is inserted in baking oven and is vulcanized in circulating air, and curing temperature is 90～100 DEG C, and cure time is 3～5 hours, and sulfuration has been pressure retracting cylinder finished product after taking out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634722.1A CN106014321B (en) | 2016-08-05 | 2016-08-05 | Telescopic polished rod sealing device for rod-pumped well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634722.1A CN106014321B (en) | 2016-08-05 | 2016-08-05 | Telescopic polished rod sealing device for rod-pumped well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014321A true CN106014321A (en) | 2016-10-12 |
| CN106014321B CN106014321B (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610634722.1A Expired - Fee Related CN106014321B (en) | 2016-08-05 | 2016-08-05 | Telescopic polished rod sealing device for rod-pumped well |
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| Country | Link |
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| CN (1) | CN106014321B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939910A (en) * | 1974-12-23 | 1976-02-24 | Gar Industries Ltd. | Stuffing box and blow out preventing device for polish rods of oil well pumping units |
| CN203412540U (en) * | 2013-07-31 | 2014-01-29 | 张健 | Polish rod sealer |
| CN104179471A (en) * | 2013-05-22 | 2014-12-03 | 西安海枫机电科技有限公司 | Flexible leak-free supercharged wellhead device |
| CN204266972U (en) * | 2014-11-14 | 2015-04-15 | 黄旭 | A kind of multifunctional capping device |
| CN104695888A (en) * | 2013-12-04 | 2015-06-10 | 丹东波纹管密封有限公司 | Automatic backflow wellhead sealer |
| CN205936485U (en) * | 2016-08-05 | 2017-02-08 | 苑海阔 | Telescopic oil pumping motor -pumped well polished rod sealing device |
-
2016
- 2016-08-05 CN CN201610634722.1A patent/CN106014321B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939910A (en) * | 1974-12-23 | 1976-02-24 | Gar Industries Ltd. | Stuffing box and blow out preventing device for polish rods of oil well pumping units |
| CN104179471A (en) * | 2013-05-22 | 2014-12-03 | 西安海枫机电科技有限公司 | Flexible leak-free supercharged wellhead device |
| CN203412540U (en) * | 2013-07-31 | 2014-01-29 | 张健 | Polish rod sealer |
| CN104695888A (en) * | 2013-12-04 | 2015-06-10 | 丹东波纹管密封有限公司 | Automatic backflow wellhead sealer |
| CN204266972U (en) * | 2014-11-14 | 2015-04-15 | 黄旭 | A kind of multifunctional capping device |
| CN205936485U (en) * | 2016-08-05 | 2017-02-08 | 苑海阔 | Telescopic oil pumping motor -pumped well polished rod sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014321B (en) | 2019-03-01 |
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