CN2471966Y - Hydraulic compensated sandproof oil sucking pump - Google Patents
Hydraulic compensated sandproof oil sucking pump Download PDFInfo
- Publication number
- CN2471966Y CN2471966Y CN 00268534 CN00268534U CN2471966Y CN 2471966 Y CN2471966 Y CN 2471966Y CN 00268534 CN00268534 CN 00268534 CN 00268534 U CN00268534 U CN 00268534U CN 2471966 Y CN2471966 Y CN 2471966Y
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- CN
- China
- Prior art keywords
- ring
- valve
- sand
- joint
- travelling valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a hydraulic compensation anti-sand oil pump for production in pumping well, which comprises a barrel assembly and a plunger assembly, wherein, the plunger assembly is provided with an upper sand-scraping ring 4 and a lower sand-scraping ring 21, an upper isolation ring 10 and a lower isolation ring 13, a base ring 15 and an upper sealing ring 11 and a lower sealing ring 14 made from elastic rubber or other non-metallic materials. Because of the improvement of the plunger structure and the adoption of soft material, the sealing and working performance is improved, the wear is reduced, and sand plug is prevented so that the service life is extended and the utility model is suitable for popularization.
Description
The utility model relates to a kind of downhole hardware that pumping well is produced that is used for: the compensation sand-proof oil-well pump of fluid power.
Oil well pump is the important downhole hardware that guarantees the pumping well ordinary production.At present, the on-the-spot oil well pump that uses adopts the steel column plug usually.Because the to-and-fro motion of plunger produces wearing and tearing between plunger and the pump barrel, when wearing and tearing were excessive, pump efficiency reduced greatly, thereby made oil well pump shortening in working life.Particularly the problems referred to above are particularly outstanding in sand output well, and the sand card takes place the steel column plug easily, make the underground work maintenance interval shorten, and cost for oil production increases.In addition, the oil well pump that adopts the steel column plug needs the taking-up pump barrel to spread out and grind back reprovision plunger, thereby it is higher to repair the pump cost when the old pump of routine is repaired.Be to solve the problems referred to above in the work of steel column plug oil well pump, in recent years field by using a kind of soft plunger oil pump that is in series by a plurality of leather cups, be interference fit between used soft plunger and the pump barrel, utilize the leather cup effect to carry out work.The shortcoming of this kind oil well pump is a service behaviour and still not ideal enough on working life.
The purpose of this utility model is to provide between a kind of plunger and pump barrel and is sealed and matched, sand control capability good and the compensation sand-proof oil-well pump of fluid power little, long service life that weares and teares.
The utility model is to realize like this.This kind sand-proof oil-well pump is by the pump barrel assembly and be contained in plunger piston assembly two large divisions in the pump barrel assembly and cooperate and form.Wherein, pump barrel that the pump barrel assembly is made up of to be threaded upper and lower joint, outer tube, extension nipple, standing valve cover, the upper and lower joint of standing valve and the standing valve that is placed in one and valve seat constitute, and plunger piston assembly then is made of lifting sub, the upper and lower ring of strike-ofing, the upper and lower valve bonnet that moves about, the upper and lower valve that moves about, the upper and lower valve seat that moves about, the upper and lower valve joint that moves about, upper and lower locking nut, upper and lower spacer ring, upper and lower seal ring, center tube, seat ring and tail pipe.In the pumping well production process, plunger pumps with rod string in pump barrel, during upstroke, traveling valve cuts out, and standing valve is opened, and the soft material on the plunger is subjected to compression swelling, realize zero sealing between plunger and pump barrel, plunger drains into the liquid stream in the pump barrel upper chamber on the pump in the oil pipe, and meanwhile, liquid stream enters and is full of lower chambers through standing valve under the pump intake differential pressure action in the well; During down stroke, standing valve cuts out, and traveling valve is opened, and the liquid of the pump bottom chamber traveling valve of flowing through is transferred to pump upper chamber.Plunger is up and down continuously repeatedly in the movement process, because the balance of the soft material ambient pressure that is adopted, it is restored to the original state under self elastic force effect, thereby do not rub between plunger and the pump barrel, plunger does not produce abrasion during down stroke, improves pump efficiency and prolongs the oil well pump purpose in working life thereby reach.
The utility model is because the improvement on the piston structure and the employing of soft material improve its sealing, service behaviour, and abrasion reduces, and can prevent the sand card, and prolonged working life, is suitable for and applies.
Accompanying drawing is a general structure schematic representation of the present utility model.
Below in conjunction with accompanying drawing enforcement of the present utility model is described further.
As shown in the figure, the utility model is made up of upper and lower joint 1,23, outer tube 2, lifting sub 3, the upper and lower ring 4,21 of strike-ofing, the upper and lower valve bonnet 5,17 that moves about, the upper and lower valve 6,18 that moves about, the upper and lower valve seat 7,19 that moves about, the upper and lower valve joint 8,20 that moves about, upper and lower locking nut 9,16, upper and lower spacer ring 10,13, upper and lower seal ring 11,14, center tube 12, seat ring 15, tail pipe 22, extension nipple 24, the upper and lower joint 25,29 of standing valve, standing valve cover 26, standing valve 27, fixed valve base 28.Wherein, the upper traveling valve cage 5 on plunger piston assembly top and the lower travelling valve joint of bottom 20 be outer to be respectively installed with the ring 4 and strike-off down and encircle 21 of strike-ofing, upper traveling valve cage 5 belows and lower travelling valve joint 20 tops are respectively equipped with upper travelling valve joint 8 and lower travelling valve cover 17, be installed with locking nut 9,16 with screw thread respectively outside the center tube 12 of joint 8 belows and valve bonnet 17 tops and fixed, center tube 12 outer upper isolating ring 10, upper sealing ring 11, lower isolating ring 13, lower sealing ring 14 and the seat rings 15 of being set with successively from top to bottom between locking nut 9 and the locking nut 16.In the component that constitute plunger piston assembly, it is rubber or other nonmetallic material of 3.5-4.5Gpa that upper and lower seal ring 11,14 adopts Young's modulus, be made into internal diameter up big and down small and and center tube 12 between the cylindrical shape in big gap is arranged, length is about 400mm.10,13 of upper and lower spacer rings are the cylinder that inner headed face has groove, the bottom periphery is less and match with upper and lower seal ring top.Upper and lower ring 4,21 peripheries of strike-ofing are manufactured with spiral slot.
Claims (4)
1, the compensation sand-proof oil-well pump of a kind of fluid power, by last, lower contact (1), (23), outer tube (2), extension nipple (24), standing valve cover (26), standing valve (27), fixed valve base (28), on the standing valve, lower contact (25), (29) pump barrel assembly of Gou Chenging and lifting sub (3), on, lower travelling valve cover (5), (17), on, lower travelling valve (6), (18), on, lower travelling valve seat (7), (19), on, lower travelling valve joint (8), (20), center tube (12), the plunger piston assembly two large divisions that tail pipe (22) constitutes forms, it is characterized in that: the lower travelling valve joint (20) of upper traveling valve cage on plunger piston assembly top (5) and bottom is outer be respectively installed with strike-off ring (4) and under the ring (21) of strike-ofing, upper traveling valve cage (5) below and lower travelling valve joint (20) top are respectively equipped with upper travelling valve joint (8) and lower travelling valve cover (17), the center tube (12) of joint (8) below and valve bonnet (17) top is outer to be installed with locking nut (9) with screw thread respectively, (16) fixed the outer upper isolating ring (10) that is set with successively from top to bottom of the center tube (12) between locking nut (9) and (16), upper sealing ring (11), lower isolating ring (13), lower sealing ring (14) and seat ring (15).
2, the compensation sand-proof oil-well pump of fluid power according to claim 1, it is characterized in that upper and lower seal ring (11), (14) are cylindrical, adopt rubber-like rubber or other nonmetallic material to make, its internal diameter is up big and down small, and big gap is arranged between the center tube (12).
3, the compensation sand-proof oil-well pump of fluid power according to claim 1 is characterized in that, upper and lower spacer ring (10), (13) are the cylinder that inner headed face has groove, the bottom periphery is less and match with upper and lower seal ring (11), (14) top.
4, the compensation sand-proof oil-well pump of fluid power according to claim 1 is characterized in that, the upper and lower ring (4) of strike-ofing, (21) periphery are manufactured with spiral slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00268534 CN2471966Y (en) | 2000-12-29 | 2000-12-29 | Hydraulic compensated sandproof oil sucking pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00268534 CN2471966Y (en) | 2000-12-29 | 2000-12-29 | Hydraulic compensated sandproof oil sucking pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2471966Y true CN2471966Y (en) | 2002-01-16 |
Family
ID=33622117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00268534 Expired - Fee Related CN2471966Y (en) | 2000-12-29 | 2000-12-29 | Hydraulic compensated sandproof oil sucking pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2471966Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549626A (en) * | 2013-10-11 | 2015-04-29 | 山特维克知识产权股份有限公司 | Sealing ring for gyratory crusher |
-
2000
- 2000-12-29 CN CN 00268534 patent/CN2471966Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549626A (en) * | 2013-10-11 | 2015-04-29 | 山特维克知识产权股份有限公司 | Sealing ring for gyratory crusher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |