CN201057141Y - Double-valve oil well pump - Google Patents
Double-valve oil well pump Download PDFInfo
- Publication number
- CN201057141Y CN201057141Y CNU2007201497271U CN200720149727U CN201057141Y CN 201057141 Y CN201057141 Y CN 201057141Y CN U2007201497271 U CNU2007201497271 U CN U2007201497271U CN 200720149727 U CN200720149727 U CN 200720149727U CN 201057141 Y CN201057141 Y CN 201057141Y
- Authority
- CN
- China
- Prior art keywords
- pump
- oil
- well
- valve
- oil 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
- 239000003129 oil well Substances 0.000 title claims abstract description 23
- 230000007774 longterm Effects 0.000 claims description 20
- 239000004576 sand Substances 0.000 abstract description 8
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 241001023788 Cyttus traversi Species 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
A dual-valve oil pump for thick oil well, sand well, gas-locked well and oil discharger in petroleum industry is disclosed. The anti-sand pump comprises a pump cylinder (2), an oil inlet hole (3), a constant-diameter long piston (5), an inner-reducing-diameter lower joint (7) and the like, wherein the pump cylinder (2) is connected with the inner-reducing-diameter lower joint (7), the constant-diameter long piston (5) is arranged in the pump cylinder (2), the constant-diameter long piston (5) is respectively connected with an upstream movable valve (4) and a downstream movable valve (6), and the anti-sand pump can prevent sand blockage, wax blockage and air lock; and the pump has the advantages of large area of the oil inlet hole, forward and backward well washing, no need of installing an oil drain, prolonged pump inspection period, improved pump efficiency, increased oil well yield, reduced well repair cost and the like.
Description
Technical field
The utility model provides a kind of petroleum industry thick oil well, sand output well, gas lock well, the oil drainer suitable two valve oil well pumps that easily drive a well.
Background technique
The common oil well pump of Oilfield using mainly is made up of pump barrel, plunger, standing valve and travelling valve at present.Field Research shows, common oil well pump exists because of reasons such as sand plug, paraffin blockage, gas lock, oil are thick cause standing valve leakage or open and close in time easily, influences the oil well ordinary production, increase cost input.Therefore, want to prolong pump detection period, improve oil well output, reduce production costs, just must solve the drawback that standing valve exists at present.
Summary of the invention
The purpose of this utility model is: provide a kind of petroleum industry thick oil well, sand output well, gas lock well, the oil drainer suitable two valve oil well pumps that easily drive a well.
The utility model is achieved in that and comprises upper connection (1), pump barrel (2), oil inlet hole (3), upward travelling valve (4), equal diameter long-term job plug (5), travelling valve (6), interior undergauge lower contact (7) down, upper connection (1) is connected with pump barrel (2), pump barrel (2) is connected with interior undergauge lower contact (7), equal diameter long-term job plug (5) is housed in the pump barrel (2), and equal diameter long-term job plug (5) is connected with last travelling valve (4) and following travelling valve (6) respectively.
The pump barrel middle and upper part has staggers mutually and isodiametric oil-feed circular port (3).
Distance between oil inlet hole (3) and the interior undergauge lower contact (7) is greater than the entire length of equal diameter long-term job plug (5).
The minimum diameter of interior undergauge lower contact (7) is less than the maximum outside diameter of equal diameter long-term job plug (5).
Advantage of the present utility model is: 1, oil well pump is not provided with standing valve, has avoided standing valve to fit badly or the leakage problem, prevents sand plug, and foreign material stop up, during use under the pump tail pipe need connect plug.2, owing to adopt two valves, liquid enters from the inlet opening of pump barrel, compares with three valve oil well pumps, has reduced the feed liquor resistance.In addition, the inlet opening area of passage is big, and well liquid advances pump and is more prone to, and inlet opening can reduce gas and enter in the pump in the middle and upper part of pump barrel, improves pump efficiency.3, can carry out positive and negative well-flushing by fixed tubular column, if need the positive well-flushing bar of giving out light at present, make plunger stop bottom to oil well pump, or plunger is proposed pump barrel, the inlet opening on the pump barrel can be communicated with oil jacket, convenient on-the-spot clean-out service.4, completion tubular column need not installed oil drainer, can avoid opening because of the oil drainer that conventional pumps is installed and causing the inspection pump that stops production.Trip out piston when examining pump, oil pipe can be communicated with sleeve pipe next time, and the liquid in the oil pipe can leak into sleeve pipe.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
As shown in drawings, the utility model comprises upper connection 1, pump barrel 2, oil inlet hole 3, upward travelling valve 4, plunger 5, travelling valve 6, interior undergauge lower contact 7 down, upper connection 1 is connected with pump barrel 2, pump barrel 2 is connected with interior undergauge lower contact 7, equal diameter long-term job plug 5 is housed in the pump barrel 2, and equal diameter long-term job plug 5 is connected with last travelling valve 4 and following travelling valve 6 respectively.
The pump barrel middle and upper part has staggers mutually and isodiametric oil-feed circular port 3.
Distance between oil inlet hole 3 and the interior undergauge lower contact 7 is greater than the entire length of equal diameter long-term job plug 5.
The minimum diameter of interior undergauge lower contact 7 is less than the maximum outside diameter of equal diameter long-term job plug 5.
Upper connection 1 top is the box screw thread, so that be threaded with oil pipe pin thread on the pump, pump barrel 2 two are the pin thread screw thread, so that the box with upper connection 1 and interior undergauge lower contact 7 is threaded respectively, the pump barrel middle and upper part has 8 and staggers mutually and isodiametric oil-feed circular port 3, distance between oil inlet hole 3 and the interior undergauge lower contact 7 is greater than the entire length of diameter long-term job plug 5, the minimum diameter of interior undergauge lower contact 7 is less than the maximum outside diameter of equal diameter long-term job plug 5, interior undergauge lower contact 7 bottoms are the pin thread screw thread, so that connect tail pipe under the pump.
During following completion tubular column; The upper connection 1 of two valve lower resistance oil well pump links to each other with oil pipe, interior undergauge lower contact 7 union tails, and the connection of pump rod, oil pipe is identical with conventional pumps.Descended on the tubing string and carried over-stroke, equal diameter long-term job plug 5 is closed oil inlet hole 3 and can be opened and take out production.Clean-out service; During positive well-flushing, transfer equal diameter long-term job plug 5 at the bottom of pump, open oil inlet hole 3, can positive well-flushing, carry over-stroke on washing behind the well, equal diameter long-term job plug 5 is closed oil inlet hole 3 and can be opened and take out production.During anti-flushing well, horse head is stopped at upper dead center, opens oil inlet hole 3 equally, gets final product anti-flushing well.Wash and unclamp horse head behind the well and can open and take out production.Carrying pump rod oil inlet hole 3 on during pump detection and workover can open, and oil pipe promptly is connected with sleeve pipe, and the liquid in the oil pipe can directly leak into sleeve pipe, has simplified work procedure, has saved workover cost.
Claims (7)
1. two valve oil well pumps, comprise upper connection (1), pump barrel (2), oil inlet hole (3), upward travelling valve (4), equal diameter long-term job plug (5), travelling valve (6), interior undergauge lower contact (7) down, it is characterized in that: upper connection (1) is connected with pump barrel (2), pump barrel (2) is connected with interior undergauge lower contact (7), equal diameter long-term job plug (5) is housed in the pump barrel (2), and equal diameter long-term job plug (5) is connected with last travelling valve (4) and following travelling valve (6) respectively.
2. according to claim 1 pair of valve oil well pump is characterized in that: pump barrel (2) middle and upper part has staggers mutually and isodiametric oil-feed circular port (3).
3. according to claim 1 pair of valve oil well pump is characterized in that: the distance between oil inlet hole (3) and the interior undergauge lower contact (7) is greater than the entire length of equal diameter long-term job plug (5).
4. according to claim 1 pair of valve oil well pump is characterized in that: the minimum diameter of interior undergauge lower contact (7) is less than the maximum outside diameter of equal diameter long-term job plug (5).
5. according to claim 1 pair of valve oil well pump is characterized in that: upper connection (1) top is the box screw thread, and pump barrel (2) two ends are the pin thread screw thread.
6. according to claim 2 pair of valve oil well pump is characterized in that: pump barrel (2) middle and upper part has 8 and staggers mutually and isodiametric oil-feed circular port (3).
7. according to claim 1 pair of valve oil well pump is characterized in that: the distance between oil inlet hole (3) and the interior undergauge lower contact (7) is greater than the entire length of diameter long-term job plug (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201497271U CN201057141Y (en) | 2007-06-20 | 2007-06-20 | Double-valve oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201497271U CN201057141Y (en) | 2007-06-20 | 2007-06-20 | Double-valve oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057141Y true CN201057141Y (en) | 2008-05-07 |
Family
ID=39425983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201497271U Expired - Lifetime CN201057141Y (en) | 2007-06-20 | 2007-06-20 | Double-valve oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057141Y (en) |
-
2007
- 2007-06-20 CN CNU2007201497271U patent/CN201057141Y/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080507 |