CN2251042Y - Anti-seizing sand retention device for oil field deep well pump - Google Patents
Anti-seizing sand retention device for oil field deep well pump Download PDFInfo
- Publication number
- CN2251042Y CN2251042Y CN 96227678 CN96227678U CN2251042Y CN 2251042 Y CN2251042 Y CN 2251042Y CN 96227678 CN96227678 CN 96227678 CN 96227678 U CN96227678 U CN 96227678U CN 2251042 Y CN2251042 Y CN 2251042Y
- Authority
- CN
- China
- Prior art keywords
- sand
- valve seat
- well pump
- valve
- block 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 provides an anti-seizing sand retention device for deep well pumps in oil fields, which is composed of an upper short pitch, a sand retention shutter, a sand retention valve, a valve seat, a lower joint and a draw rod, wherein, the upper short pitch is threaded with the lower joint, and the valve seat is arranged inside the upper short pitch; both the sand retention valve and the sand retention shutter which are arranged above the valve seat can be freely move upwards and downwards along the draw rod. The sand retention device is arranged at the upper part of a deep well pump. When a pumping unit stops running, sand in well liquid in an oil string can be prevented from entering the deep well pump, and the sand clamping accidents can be prevented. The utility model can extend the period of workover treatment, enhance the pumping efficiency, increase the yield of crude oil, decrease the cost, and enhance the efficiency. The utility model has the advantages of simple structure, convenient operation, and wide popularization.
Description
The utility model relates to and is specifically designed to from the very pump or the pumping installations of depths lifting fluid, particularly is a kind of anti-sticking sand device that the oil field machinery oil routine has the bar deep well pump to use.
At present, the routine that oilfield pumping well generally uses has the bar deep well pump, mainly is made up of parts such as pump barrel, piston, fuel-displaced valve and oil-feed valves.Because this type of pump sand control card ability is relatively poor, uses in the sand well of oil field, particularly because of reasons such as power failures, during the oil pumper stop pumping, outstanding swim sand grains in tubing string well liquid under action of gravity, be sunken on the piston of deep well pump down, often cause deep well pump sand card accident.In case sand card accident takes place, will carry out workover treatment.Frequent workover treatment had both influenced crude output, increased cost of production again.Therefore, the oil field routine has the sand control card problem of bar deep well pump, has become the common technical task of paying close attention in each oil field.
The purpose of this utility model, just being provides a kind of anti-sticking sand device for the oil field routine has the bar deep well pump, it is installed in deep well pump top, play the effect of sand block anti-sticking,, reduce inspection pump number of times to guarantee deep well pump energy operate as normal, prolong the oil well time between overhauls(TBO), increase crude output, reduce production costs, increase economic efficiency.
Above-mentioned purpose is realized by following technical proposals:
This anti-sticking sand device is made up of last pipe nipple, sand block valve, sand block valve, valve seat, lower contact and pull bar.There is the installation that matches of the external screw thread of internal thread and lower contact upper end last pipe nipple lower end.Valve seat is installed in pipe nipple inside, after last pipe nipple and lower contact screw thread are tightened valve seat is clamped, and becomes one.The sand block valve sets in the valve seat upper end, and the sand block valve sets in sand block valve upper end, and the two all is sleeved on the pull bar, become one, and can be along the activity of pull bar easy on and off.Connect rod string on the pull bar, connect the piston of pump down.Last pipe nipple upper end has internal thread to be connected with tubing string.The lower contact lower end has external screw thread to be connected with the piston of deep well pump by a short circuit hoop.
Last pipe nipple in the above-mentioned oil field deep-well pump anti-sticking sand device, there is a valve seat step at its inwall middle part, and its hypomere internal diameter is greater than the epimere internal diameter, and the effect of step is to push down the valve seat upper end.
Shelves sand valve in the above-mentioned oil field deep-well pump anti-sticking sand device, epimere is a cylinder, and hypomere is a cone, matches with sand block valve upper port taper seat, and tapering is 60 °.
Sand block valve in the above-mentioned oil field deep-well pump anti-sticking sand device, epimere is a cylinder, and hypomere is a cone, matches with valve seat upper port taper seat, and tapering is 90 °.Uniform 6～8 axial fluid course holes on the sand block valve body.
Valve seat in the above-mentioned oil field deep-well pump anti-sticking sand device is cylindrical shape, and valve seat external diameter and last pipe nipple hypomere internal diameter are for movingly, and the valve seat minimum diameter is greater than the piston diameter of deep well pump.
Following positive effect is arranged after the dark also pump anti-sticking sand device application of this oil field:
When the oil pumper stop pumping, the sand grains in the tubing string in the well liquid deposits to above the anti-sticking sand device, advances less than going in the pump, thereby prevents that sand card accident from taking place, and guarantees the operate as normal of pump, has reduced inspection pump number of times, has prolonged the well workover cycle; When oil pumping machine oil pumping duty, deep well pump were normally moved, this anti-sticking sand device also had certain depressurization, can improve pump efficiency about 10%.Owing to have sand block and decompression double action, oil well output is further improved.Every mouthful of oil well can increase help benefit 4～80,000 yuan, footpath every year.This anti-sticking sand device structure is very simple, and installation and use are also very convenient, and manufacturing cost has only about 400 yuan.
Accompanying drawing is that structure of the present utility model is partly cutd open schematic diagram.
Further specify as follows to embodiment of the present utility model in conjunction with the accompanying drawings:
Among the figure, the 1st, last pipe nipple, the 2nd, sand block valve, the 3rd, sand block valve, the 4th, valve seat, the 5th, lower contact, the 6th, pull bar.Be assembled into the anti-sticking sand device by above component by the schematic structure mode.
During application, will go up pipe nipple 1, valve seat 4 and lower contact 5 earlier and be assembled into one.Its lower end is installed in pump barrel top by a short circuit hoop, and its upper end is installed on the tubing string, is lowered to the degree of depth predetermined in the oil well with tubing string.Again sand block valve 2 and sand block valve 3 are set on the pull bar 6 and are assembled into one.The pull bar upper end is connected with rod string, and the pull bar lower end is connected with the piston of deep well pump, is lowered to preposition in the oil well with rod string.
In oil pumper when work,, the pull bar 6 in the deep well pump anti-sticking sand device and sand block valve 2 move up and down with rod string.Set the sand block valve 3 on valve seat 4, owing to have the fluid course hole, well liquid can therefrom pass through, so in oil pumper up-down stroke motion process, sand block valve 3 sets on valve seat 4 always, is in motionless state.Sand block valve 2 can move up and down along pull bar 6 owing to be subjected to collision of liquid stream and drive, and its motion commutation commutates with the oil pumper up-down stroke and is consistent, and moves up and down synchronously.
During the oil pumper down stroke, sand block valve 2 sets on sand block valve 3 under the power effect such as well liquid gravity up, its fluid course hole is blocked, reduced of the influence of tubing string interior well hydraulic coupling in pump top to pump work, make the down stroke of dark and pump more steady, help improving full degree of dashing of pump and pump efficiency.
After oil pumper stopped oil pumping, sand block valve 2 fell to setting on sand block valve 3 under self-gravity action, closes the fluid course hole.Like this, the sand grains in the tubing string of pump top in the well liquid is deposited on above the sand block valve 2 of anti-sticking sand device under action of gravity, avoids sand setting to enter in the pump, has prevented that effectively deep well pump sand card accident from taking place.
When oil pumper was reset oil pumping, the sand that is deposited on the sand block valve 2 began to become flexible, and was upwards taken out the high pressure liquid stream of coming and break up, and along with well liquid is drawn out of outside the oil well, thereby had guaranteed the ordinary production of pumpingh well.
Claims (5)
1. oil field deep-well pump anti-sticking sand device, it is characterized in that by last pipe nipple, the sand block valve, the sand block valve, valve seat, lower contact and pull bar are formed, there is the installation that matches of the external screw thread of internal thread and lower contact upper end last pipe nipple lower end, valve seat is contained in pipe nipple inside, after last pipe nipple and lower contact screw thread are tightened valve seat is clamped, become one, the sand block valve sets in the valve seat upper end, the sand block valve sets in sand block valve upper end, the two all is sleeved on the pull bar, become one, and can connect rod string on the pull bar along the activity of pull bar easy on and off, connect the piston of pump down, last pipe nipple upper end has internal thread to be connected with tubing string, and the lower contact lower end has external screw thread to be connected with the pump barrel of deep well pump by a short circuit hoop.
2. oil field deep-well pump anti-sticking sand device according to claim 1 is characterized in that there is a valve seat step at pipe nipple inwall middle part, and its hypomere internal diameter is greater than the epimere internal diameter.
3. oil field deep-well pump anti-sticking sand device according to claim 1 is characterized in that sand block valve epimere is a cylinder, and hypomere is a cone, matches with the sand block valve upper port conical surface, and tapering is 60 °.
4. oil field deep-well pump anti-sticking sand device according to claim 1 is characterized in that sand block valve epimere is a cylinder, and hypomere is a cone, matches with the valve seat upper port conical surface, and tapering is 90 °, uniform 6～8 axial fluid course holes on the sand block valve body.
5. oil field deep-well pump anti-sticking sand device according to claim 1 is characterized in that valve seat is a cylindrical shape, and valve seat external diameter and last pipe nipple hypomere internal diameter are for movingly, and the valve seat minimum diameter is greater than the piston diameter of deep well pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227678 CN2251042Y (en) | 1996-04-17 | 1996-04-17 | Anti-seizing sand retention device for oil field deep well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227678 CN2251042Y (en) | 1996-04-17 | 1996-04-17 | Anti-seizing sand retention device for oil field deep well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2251042Y true CN2251042Y (en) | 1997-04-02 |
Family
ID=33905729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96227678 Expired - Fee Related CN2251042Y (en) | 1996-04-17 | 1996-04-17 | Anti-seizing sand retention device for oil field deep well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2251042Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840127A (en) * | 2011-07-28 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Novel anti-settling sand stuck pump device |
-
1996
- 1996-04-17 CN CN 96227678 patent/CN2251042Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840127A (en) * | 2011-07-28 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Novel anti-settling sand stuck pump device |
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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 |