CN2045778U - Anti-air oil-well pump - Google Patents
Anti-air oil-well pump Download PDFInfo
- Publication number
- CN2045778U CN2045778U CN 88220987 CN88220987U CN2045778U CN 2045778 U CN2045778 U CN 2045778U CN 88220987 CN88220987 CN 88220987 CN 88220987 U CN88220987 U CN 88220987U CN 2045778 U CN2045778 U CN 2045778U
- Authority
- CN
- China
- Prior art keywords
- pump
- oil
- piston
- valve
- well
- 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 - Lifetime
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses an anti-air oil-well pump for oil pumping unit well, which adopts the short circuiting piston structure of non-barrel liner, whole pump barrel, long stroke and hard and soft bond, in particular to an air exhaust and anti-air structure which is composed of a biased valve, a bleed hole and a javelin valve. The function of air exhaust and oil drainage is achieved. The ordinary oil well pump can be replaced by the anti-air oil-well pump for oil pumping unit well to pump oil, and comparing with the ordinary pumping efficiency, the pumping efficiency of the anti-air oil-well pump for oil pumping unit well is improved more than 15%, which is in particular suitable for each oil pumping unit well with high GOR of the oilfield. The anti-air oil-well pump for oil pumping unit well has the advantages of convenient pump pulling work and pump inspection work, long service life, etc.
Description
The utility model relates to a kind of gas-tight oil well pump that is used for oilfield pumping well.
The kind of oil well pump of the prior art is a lot, what China was general at present is SYB type tubing pump, the cylinder sleeve overwhelming majority of this pump is to be that the metal lining stack of 150mm or 300mm assembles up by length, its valve structure all adopts the steel ball valve, there is a standing valve its middle and lower part, and two unsteady valves that move about are arranged on the piston.Piston and sucker rod are to be rigidly connected.But in the higher producing well of gas-oil ratio, because the compressible influence of gas, often cause travelling valve to lag to open or do not open, serious caused gas lock makes pump depletion or seriously influences the efficient of pump, directly influences oil well yield.Therefore, both at home and abroad done a large amount of work in order to overcome in the oil well influence of gas.As No. 4173451 described down-hole pumps of patent of the U.S., adopted unsteady pump barrel, piston and pump barrel are for being rigidly connected, and the bottom does not have standing valve, and when piston stroking upward, gas can be discharged into oil pipe by air vent, has therefore overcome the influence of gas; But its discharge opeing runner is too small, and is inapplicable to the well that output is high; Because piston and pump barrel move back and forth for a long time for being rigidly connected, plunger is easily missed, and wearing and tearing back wastage is bigger.The oil pumping aspiration pump (" oil drilling technology " 1986 the 4th phases) of China's Liaohe Oil Field development has adopted middle chamber, has opened up outlet for the gas in the well liquid, has reduced the gas liquid ratio in the pump, improves the full level of liquid in the pump, has improved pump efficiency.But in the high oil well of gas liquid ratio, because the volume of middle chamber is little, though reduced the gas liquid ratio in time seating nipple, not thorough, can not eliminate the influence of gas fully, on the other hand,, be difficult for processing to the concentricity requirement height of upper and lower seating nipple.
The purpose of this utility model is a shortcoming of having considered said pump, designed a kind of liner-less, the gas-tight oil well pump of short piston, biased valve, air vent and the javelin valve arrangement of whole pump barrel, long stroke, soft or hard combination, can overcome gases affect in the oil well, increase well yield, improve pump efficiency, its pump efficiency has improved more than 15% than common tubing pump.The utility model does not appear in the newspapers through looking into world patent.
Fig. 1 is a gas-tight oil well pump upstroke schematic diagram.
Fig. 2 is a gas-tight oil well pump down stroke schematic diagram.
The utility model is achieved in that (describing in detail below in conjunction with accompanying drawing)
Gas-tight oil well pump shown in Fig. 1-2 is made up of protective device (3), disjointed device (4), air vent (5), piston rod (6), biased valve (7), upper chamber (8), javelin valve (9), piston body (10), lower chambers (11), pump barrel (12) and inlet valve (13).
This gas-tight oil pumping pump structure and operating principle are:
The gas-tight oil well pump has adopted liner-less, whole pump barrel structure.At the top of pump a protective device (3) is arranged, an on-off connector (4) that is connected with sucker rod (2) is housed in protective device (3), its underpart is connected with piston rod (6); In the underground work process, protection piston body (10) is not drawn out pump barrel; In piston body (10) can be packed pump barrel in advance on the ground into when descending pump, avoid in operation, making the impaired or difficult to get access pump barrel of piston body (10).Top has adopted biased valve to prevent device of air, has annular biased valve (7) to float with piston rod (6) and is connected, and when upstroke, journey is carried valve and started under differential pressure action, and gas and liquid are entered in the oil pipe; When down stroke, Cheng Zaifa (7) closes under differential pressure action, bears the weight of top fluid column, and is delivered to reposefully on the oil pipe (1).Simultaneously the sand grains in the fluid column is deposited in outside the pump barrel, can reduces the wearing and tearing of consumable accessory in the pump, improve application life.Through for 5-6mm, longly be the centre bore of 300-400mm in being drilled with on piston rod (6) upper axial, different azimuth diametrically has a plurality of air vents (5) to be communicated with centre bore on axial on the different distance.When down stroke, when near lower dead point position, air vent (5) begins the high pressure fluid column in the oil pipe is communicated with upper chamber (8), makes gas pass through air vent (5) and enters in the oil pipe, has overcome gases affect, has prevented the gas lock phenomenon.Adopted conical javelin valve (9) structure at the middle part of pump, javelin valve (9) is connected for floating with piston body (10), and pump barrel is divided into upper and lower two chambers.When upstroke, javelin valve (7) cuts out in advance, and it is up to drive piston body (10); During down stroke, open in advance, be communicated with the gas and the liquid of upper and lower chamber, and enter upper chamber (8), can overcome the influence of lower gas like this by the passage of javelin valve (9) and piston body (10).The plunger designs of gas-tight oil well pump is the piston body (10) of unsteady soft or hard combination, the length of piston body (10) is 0.495 meter, top is hard piston body, the bottom is a plurality of soft piston rings, grommet, filler ring composition, with locking cap, fixed by nut, soft piston ring is a nylon material.Because the piston body of soft or hard combination, makes piston not have wastage at the sealing and the application life of having improved piston.The bottom of pump is inlet valve ［ 13 ］, and when upstroke, because the pressure in the lower chambers ［ 11 ］ reduces, pit shaft liquid backs down inlet valve ［ 13 ］ beginning oil-feed; During down stroke, because the liquid of lower chambers ［ 11 ］ is compressed, when pressure equaled the pit shaft fluid pressure, inlet valve cut out automatically.
The utility model is to implement like this:
Upstroke is left BBC at piston, by air vent (5) fluid column in the oil pipe is communicated with pump barrel upper chamber (8), and the highly pressurised liquid in the oil pipe fluid column enters the upper chamber (8) of low pressure by air vent (5); Capture the gas compartment; Gas in the upper chamber (8) is drained in the oil pipe fluid column by air vent (5) simultaneously.The possibility that biased valve (7) is not opened in the time of can avoiding causing upstroke greatly owing to gas compressibility has like this prevented the gas lock phenomenon.
In addition, when upstroke began, at first sucker rod (2) drove the up 10-20mm of javelin valve (9), after the sealing, drove piston again and moved upward in advance.The pressure of lower chambers ［ 11 ］ reduces gradually in this moment pump barrel, and during head of liquid, inlet valve ［ 13 ］ is backed down oil-feed in less than pit shaft, meanwhile, upper chamber (8) internal pressure increases gradually, when its pressure greater than oil pipe in during head of liquid, biased valve (7) is just opened, the beginning oil extraction.
During down stroke: at first sucker rod (2) drives the descending 10-20mm of javelin valve (9), opens in advance, is communicated with upper and lower chamber, and it is descending to promote piston body (10) again; Meanwhile, biased valve (7) and inlet valve ［ 13 ］ are closed rapidly under differential pressure action, when piston during near bottom dead centre air vent (5) with oil pipe in fluid column be communicated with upper chamber (8) and begin venting.Because inlet valve ［ 13 ］ cuts out, so when not influencing pump delivery, reached the purpose of gas-tight, exhaust, oil pumping.
Through the test of 8 mouthfuls of wells, average individual well day is increased production 5.8 tons of crude oil to this gas-tight oil well pump in the Zhongyuan Oil Field, and pump efficiency has on average improved more than 15% than conventional pump.At civilian 13-66 well, gas-oil ratio is 300m
3/ t, continuous operation is more than 200 days, and pump efficiency is on average more than 30%.
The utility model is compared with common oil well pump has following characteristics:
1, this gas-tight oil well pump has adopted liner-less, whole pump barrel, long stroke structure, therefore with regard to there not being random cylinder sleeve problem, has overcome the underground work that causes because of the entanglement cylinder sleeve.
2, this gas-tight oil well pump javelin valve arrangement of having adopted mechanical starting and having closed is closed when upstroke in advance, opens in advance during down stroke; As long as sucker rod one is moving, the javelin valve will move, and has overcome like this owing to gases affect is not opened the valve that floats to cause the gas lock phenomenon.
3, the piston of this gas-tight oil well pump has adopted the piston body of soft or hard combination, and it has the general character of soft plunger and hard plunger, and good seal performance does not have wastage.Adopted the floating piston structure simultaneously, sucker rod and piston body are not rigidly connected, therefore can relative motion, can reduce because of moment of torsion increases making sucker rod distortion and disconnected taking off, and improved the life-span of sucker rod, reduced cost for oil production.
4, this gas-tight oil well pump has adopted the biased valve means of deflation, and the sand grains in the fluid column is deposited in outside the pump barrel, has reduced wearing and tearing in the pump, has improved application life, has realized the gas-tight exhaust simultaneously, has overcome the gas lock phenomenon.
5, since gas-tight oil well pump top design protective device, in the underground work process, the protection piston is not drawn out pump barrel, when piston will go out pump barrel, protective device just forced on-off connector to be thrown off; When sucker rod was transferred to bottom dead centre, on-off connector connected and operate as normal with sucker rod again.During this external time pump, piston can be packed on the ground in advance and be gone into the well simultaneously in the pump barrel, overcome in the common oil well pump operation that piston is lowered in the well head oil pipe and gone into pump barrel through last km is laggard, the operation of doing over again that makes piston chance sand, wax or foul be difficult to enter pump barrel and cause has improved operation quality.
Claims (2)
1, a kind of gas-tight oil well pump that is used for rod-pumped well, it is made up of pump barrel (12) piston rod (6), piston body (10) and inlet valve (13), it is characterized in that the top of pump is provided with protective device (3).Exhaust, apocenosis passage that the middle part has biased valve (7), air vent (5) and javelin valve (9) to form.Its piston body (10) is the hermetically-sealed construction of soft or hard combination, and the inside of protective device (3) is equipped with a top and is connected with sucker rod (2).The on-off connector (4) that the bottom is connected with piston rod (6), the valve body of biased valve (7) is the annular cones body, valve body is to float to be connected with piston rod (6).Air vent (5) is more than 3.Be distributed in the radially different azimuth of piston rod (6) respectively.Axially on the differing heights, they with piston rod (6) axially on internal diameter be 5-6mm, long centre bore for 300-400mm is communicated with, javelin valve (9) be a conical structure, it and piston rod (6) are fixed for screw thread, are unsteady the connection with piston body (10).
2, gas-tight oil well pump according to claim 1, the top that it is characterized in that piston body (10) is hard piston body, and the bottom is formed by a plurality of soft piston rings, grommet, filler ring, with locking cap and fixed by nut, its length is 0.495 meter, and soft piston ring is a nylon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220987 CN2045778U (en) | 1988-12-14 | 1988-12-14 | Anti-air oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220987 CN2045778U (en) | 1988-12-14 | 1988-12-14 | Anti-air oil-well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2045778U true CN2045778U (en) | 1989-10-11 |
Family
ID=4853098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88220987 Expired - Lifetime CN2045778U (en) | 1988-12-14 | 1988-12-14 | Anti-air oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2045778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104160155A (en) * | 2012-03-02 | 2014-11-19 | 国际壳牌研究有限公司 | Method of detecting and breaking gas locks in an electric submersible pump |
| CN117685207A (en) * | 2024-02-04 | 2024-03-12 | 山东巨辉石油科技有限公司 | Circulating exhaust type oil pump for oil field |
-
1988
- 1988-12-14 CN CN 88220987 patent/CN2045778U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104160155A (en) * | 2012-03-02 | 2014-11-19 | 国际壳牌研究有限公司 | Method of detecting and breaking gas locks in an electric submersible pump |
| CN104160155B (en) * | 2012-03-02 | 2017-06-06 | 国际壳牌研究有限公司 | The method for detecting and breaking the gas lock in electric submersible pump |
| CN117685207A (en) * | 2024-02-04 | 2024-03-12 | 山东巨辉石油科技有限公司 | Circulating exhaust type oil pump for oil field |
| CN117685207B (en) * | 2024-02-04 | 2024-04-02 | 山东巨辉石油科技有限公司 | Circulating exhaust type oil pump for oil field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101191405A (en) | Rotary digging drilling machine jet flow reverse circulation rock drilling technique | |
| CN2866785Y (en) | Rotary valve type hydraulic percussion device | |
| CN100346053C (en) | Automatic boosting oil production and liquid discharge gas producing device and method for underwell gas | |
| CN2549176Y (en) | Signal-feedback pumping unit | |
| CN2045778U (en) | Anti-air oil-well pump | |
| CN2307102Y (en) | Underground oil-water-separating water-filling oil-obtaining device | |
| CN201778686U (en) | Oil-mixing and gas-preventing integrated lifting process pipe column | |
| CN201121572Y (en) | Bias-wearing proof anti-sand gas-tight multi-function oil well pump | |
| CN2903473Y (en) | Reciprocating dual action oil-submersible electric pump | |
| CN202883333U (en) | Novel oil well pump special for liquid draining and gas production | |
| CN2700606Y (en) | Ground surface driven screw pump for rodless pumping operation | |
| CN2538941Y (en) | Hydraulic automatic pressurizing pump | |
| CN114607289A (en) | Electric pump and jet pump combined lifting process pipe column suitable for high sand content and using method thereof | |
| CN200982287Y (en) | Lateral opening type hydraulic feed back oil pump | |
| CN2528961Y (en) | Underground hydraulic oil well pump | |
| CN2398442Y (en) | Negative-pressure pulse deep well oil production pump device | |
| CN2611585Y (en) | Anti-pollution check valve for offshore oil field | |
| CN2508021Y (en) | Secondary suction load-reducing oil pump | |
| CN2869381Y (en) | Dual oil-layer combined-production oil pump | |
| CN218953535U (en) | Forced opening and closing rod type anti-corrosion oil pump | |
| CN215718649U (en) | Gas-liquid co-production double-channel well-flushing tool | |
| CN220469858U (en) | High-capacity bailing cylinder | |
| CN118008217B (en) | Three-stage serial pump deep pumping and drainage device and use method | |
| CN1102203C (en) | Control device for enhancing anti-interference nature of hydraulic piston-pump | |
| CN1074499C (en) | Ultrahigh pressure resistant drilling equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |