CN2911253Y - Periodic exhausting oil well pump - Google Patents
Periodic exhausting oil well pump Download PDFInfo
- Publication number
- CN2911253Y CN2911253Y CN 200620200579 CN200620200579U CN2911253Y CN 2911253 Y CN2911253 Y CN 2911253Y CN 200620200579 CN200620200579 CN 200620200579 CN 200620200579 U CN200620200579 U CN 200620200579U CN 2911253 Y CN2911253 Y CN 2911253Y
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- China
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- gas
- pump barrel
- pump
- plunger
- pump cylinder
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- Expired - Lifetime
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Abstract
The utility model relates to a period exhaust type oil pump, including a pump cylinder, a plunger and a fixation valve assembly, while the pump cylinder contains an upper pump cylinder and a lower pump cylinder, between which a gas-collecting cap cylinder is provided, and the lower pump cylinder is provided with a fixation valve assembly. The plunger stays inside of the upper pump cylinder, gas-collecting cap cylinder and the lower pump cylinder, and can move vertically, therefor, forming a gas-collecting chamber when moving to the gas-collecting cap cylinder, and keeping connecting between gas-collecting chamber and the lower pump cylinder when moving up to upper pump cylinder, and keeping connecting between gas-collecting chamber and the upper pump cylinder when moving down to lower pump cylinder. The utility model has an reasonable and compact structure, and the period exhaust type oil pump can periodically exhaust the gas out of pump, therefor not only overcoming the influence from the gas, but also reliably running for a long period under the well, improving the pumping efficiency to enhance oil pumping efficiency.
Description
One, technical field:
The utility model relates to the oil well pump that is used for the oil field oil pumping, is a kind of cycle gas-discharging type oil well pump, is specially adapted to rod pump mechanical oil recovery gas to the influential oil well of oil well pump proper functioning.
Two, background technique:
Existing oil well pump refers generally to rod pumping pump, and it comprises pump barrel, plunger and standing valve assembly, and in rod pumping system, the utilization of conventional oil well pump is quite universal.Yet when using conventional pumps in the high gas-oil ratio (HGOR) oil well, owing to contain gas in the gas-liquid mixed flow body of extraction, make that conventional oil well pump fluid full level is poor, pump efficiency reduces.When gases affect is serious, normal " gas lock " phenomenon that takes place.Basic reason is that the lower travelling valve of conventional pumps and the chamber of standing valve composition have gas to exist, and makes when the conventional pumps plunger is descending, can't open under the effect of lower travelling valve oil pressure in oil pipe.Along with plunger is descending, pump lower chambers volume reduces, and pressure raises, and gas is dissolved in the fluid under the effect of high pressure.When plunger was up, gas was separated out from fluid again.Like this, in stroke, gas compresses in pump chamber and expands, and traveling valve and standing valve are closed all the time, have lost effect, and oil well is just not fuel-displaced, thereby causes the gas lock phenomenon.More seriously pump in this oil well, the damage of underground equipments such as rod string, valve rod, valve bonnet, valve, oil pipe has been quickened in normal generation " liquid level impact ".
At present, domestic and international gas-tight about oil well pump has a lot of ways.Such as installing gas anchor additional under oil well pump, it is very little that shortcoming is that gas anchor takes effect to high gassiness oil well, is difficult to obtain satisfied effect.In addition, many gas-tight oil well pumps have been developed both at home and abroad, mostly be on traveling valve and standing valve, to have designed mechanical actuation device, though can both play certain gas-tight effect, but its complex structure, the fluid passage is little, and resistance is big, component are difficult to bear the strong load running of long-term efficient frequency, fragile, the life-span is short; And component required precision height, processing difficulties, machining cost height.
Three, summary of the invention:
The utility model provides a kind of cycle gas-discharging type oil well pump, has overcome the deficiency of above-mentioned prior art, and it can overcome the influence of gas to oil well pump work to greatest extent, again can be stably in a long term in underground work, and reasonable and compact in structure.
The technical solution of the utility model realizes by following measure: a kind of cycle gas-discharging type oil well pump, it comprises pump barrel, plunger and standing valve assembly, and pump barrel comprises pump barrel and following pump barrel, between last pump barrel and following pump barrel, gas receiver is arranged, in following pump barrel bottom the standing valve assembly is installed, plunger is positioned at pump barrel, also can twitch up and down in gas receiver and the following pump barrel, form the gas storage chamber between plunger when the gas receiver position and the gas receiver, gas storage chamber when plunger is positioned at the pump barrel position communicates with following pump barrel, and the gas storage chamber when plunger is positioned at the pump barrel position communicates with last pump barrel.
Be further optimization and/or improvements below to above-mentioned technical solutions of the utility model:
Transition frustum on can having between pump barrel and the gas receiver on above-mentioned.
Between above-mentioned gas receiver and following pump barrel, have and to descend the transition frustum.
The utility model reasonable and compact in structure, utilize this cycle gas-discharging type oil well pump can be periodically outside the gas excavationg pump in the pump barrel, can overcome the influence of gas to greatest extent to oil well pump work, again can be stably in a long term in underground work, thereby the raising pump efficiency is improved oil recovery efficiency.
Four, description of drawings:
Accompanying drawing 1 is for the master of the utility model most preferred embodiment looks the sectional structure schematic representation,
Coding in the accompanying drawing is respectively: 1 is last pump barrel, and 2 is plunger, and 3 is gas receiver, and 4 is the gas storage chamber, and 5 are following pump barrel, and 6 is the standing valve assembly.
Five, embodiment:
The utility model is not subjected to following embodiment's restriction, can determine concrete mode of execution according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, this cycle gas-discharging type oil well pump comprises pump barrel, plunger 2 and standing valve assembly 6, and pump barrel comprises pump barrel 1 and following pump barrel 5, between last pump barrel 1 and following pump barrel 5, gas receiver 3 is arranged, in following pump barrel 5 bottoms standing valve assembly 6 is installed, plunger 2 is positioned at pump barrel 1, also can twitch up and down in gas receiver 3 and the following pump barrel 5, form gas storage chamber 4 between plunger 2 when gas receiver 3 positions and the gas receiver 3, gas storage chamber 4 when plunger 2 is positioned at pump barrel 1 position communicates with following pump barrel 5, and the gas storage chamber 4 when plunger 2 is positioned at pump barrel 5 positions communicates with last pump barrel 1.
Can according to actual needs above-mentioned cycle gas-discharging type oil well pump be made further optimization and/or improvements:
For the ease of the utility model is installed, as shown in Figure 1, last transition frustum is arranged preferably between last pump barrel 1 and the gas receiver 3, between gas receiver 3 and the following pump barrel 5 following transition frustum is arranged.
In the utility model: plunger, adopt in the prior art oil well pump in the total Chengdu of standing valve.
Above technical characteristics has constituted most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristics according to actual needs, satisfies the demand of different situations.
Working procedure of the present utility model is as follows: when the utility model cycle gas-discharging type oil well pump arrives the down-hole down with oil pipe, be connected with sucker rod above the plunger 2.In plunger 2 up stroke processes: the upper and lower valve that moves about above the plunger 2 is closed under the effect of oil pipe head of liquid, and the pump chamber internal pressure reduces, and standing valve assembly 6 is opened, and oil gas mixed flow body enters in the pump chamber; When plunger 2 was up to certain distance, the gas storage chamber 4 of gas receiver 3 was communicated with the tube chamber of following pump barrel 5, and the gas in the mixed flow body has part to escape in the gas storage chamber 4.In plunger 2 descending processes: when the gas storage chamber 4 in the plunger 2 descending processes was communicated with the tube chamber of last pump barrel 1, the gas in the mixed flow body escaped in the gas storage chamber 4; When the chamber that plunger 2 comes downwards to the tube chamber of gas storage chamber 4 and last pump barrel 1 and following pump barrel 5 is all closed, tube of pump barrel 5 is full of in the chamber at present all is liquid basically for this, because liquid has incompressibility, therefore pressure raises rapidly, back down the travelling valve in the plunger 2, the tube intracavity liquid that descends pump barrel 5 is entered in the tube chamber of pump barrel 1; Descending when plunger 2 continuation, gas storage chamber 4 is communicated with last pump barrel 1, and the gas that is stored in the gas storage chamber 4 just is discharged from storage chamber 4, has so just eliminated to enter the influence of pump chamber gas to the normal oil-feed oil extraction of pump.
Claims (3)
1, a kind of cycle gas-discharging type oil well pump, comprise pump barrel, plunger and standing valve assembly, it is characterized in that pump barrel comprises pump barrel and following pump barrel, between last pump barrel and following pump barrel, gas receiver is arranged, in following pump barrel bottom the standing valve assembly is installed, plunger is positioned at pump barrel, gas receiver and following pump barrel and can twitches up and down, form the gas storage chamber between plunger when the gas receiver position and the gas receiver, gas storage chamber when plunger is positioned at the pump barrel position communicates with following pump barrel, and the gas storage chamber when plunger is positioned at the pump barrel position communicates with last pump barrel.
2, cycle gas-discharging type oil well pump according to claim 1 is characterized in that last transition frustum is arranged between pump barrel and the gas receiver.
3, cycle gas-discharging type oil well pump according to claim 1 and 2 is characterized in that between gas receiver and the following pump barrel following transition frustum being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620200579 CN2911253Y (en) | 2006-06-29 | 2006-06-29 | Periodic exhausting oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620200579 CN2911253Y (en) | 2006-06-29 | 2006-06-29 | Periodic exhausting oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2911253Y true CN2911253Y (en) | 2007-06-13 |
Family
ID=38133113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620200579 Expired - Lifetime CN2911253Y (en) | 2006-06-29 | 2006-06-29 | Periodic exhausting oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2911253Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251199A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气股份有限公司 | Anti-air-locking oil well pump |
| CN104470675A (en) * | 2012-06-14 | 2015-03-25 | 流量控制有限责任公司 | Preventing submersible pump air lock |
-
2006
- 2006-06-29 CN CN 200620200579 patent/CN2911253Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470675A (en) * | 2012-06-14 | 2015-03-25 | 流量控制有限责任公司 | Preventing submersible pump air lock |
| US10267317B2 (en) | 2012-06-14 | 2019-04-23 | Flow Control Llc. | Technique for preventing air lock through stuttered starting and air release slit for pumps |
| CN104251199A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气股份有限公司 | Anti-air-locking oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070613 |
|
| EXPY | Termination of patent right or utility model |