CN2530061Y - Seat sealable thick oil pump - Google Patents
Seat sealable thick oil pump Download PDFInfo
- Publication number
- CN2530061Y CN2530061Y CN 01276194 CN01276194U CN2530061Y CN 2530061 Y CN2530061 Y CN 2530061Y CN 01276194 CN01276194 CN 01276194 CN 01276194 U CN01276194 U CN 01276194U CN 2530061 Y CN2530061 Y CN 2530061Y
- Authority
- CN
- China
- Prior art keywords
- pump
- plunger
- acreage
- thick oil
- pipe
- 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
A thick oil pump of an oil field machinery for oil extraction, which can be seated and sealed, is composed of an upper pump assembly, a communication joint, a connection pipe and a lower pump assembly, wherein, the upper pump assembly consists of an upper pump barrel and an upper plunger, and the lower pump assembly is composed of a strained pipe, a lower pump barrel, a lower plunger, a delivery valve and a suction. An axial force is borne by the upper pump barrel and the strained pipe, and the lower pump barrel carries no axial force. For the strained pipe has great rigidity and intensity, strong compression resistant and tensile capabilities, the production can be carried out with a long tail pipe and a packer. When in pumping, the upper plunger, the connection pipe, the lower plunger and the delivery valve can simultaneously move along with the pumping rod. When in down stroke, the pressure in the pump is high and the pressure outside the pump is low, for the acreage of the upper plunger is larger than the acreage of the lower plunger, the acreage bearing high pressure on the upper butt of the upper plunger is larger than the acreage bearing high pressure on the lower butt of the upper plunger, and a force, which helps the pumping rod to move downward, is produced under the actions of the acreage difference and pressure difference, so that the frictional resistance of the thick oil to the pumping rod can be overcome, and the normal production of the thick oil well can be ensured.
Description
One, technical field
The utility model be a kind of oil field machinery oil use can seat envelope thick oil pump.
Two, background technique
In the thick oil pump that use in the oil field, generally be to be composed in series, because pump is little pump down by the different oil well pump in two pumps footpath, its external diameter is little, and rigidity and intensity are low, and resistance to compression and resistance to tension are low, can not belt length tail pipe and packet production, many wells of oil production by layer that need can not use.Must first lower leaf flow string if use, and separate-layer production string is fixed on the oil reservoir position, and then have the flow string of thick oil pump down.This oil recovery technique flow chart is many, the expense height, and the time is long.
Three, summary of the invention
The purpose of this utility model be design a kind of can the belt length tail pipe and packet produce can seat envelope thick oil pump, make it need thick oil pump tubing string that lower leaf recovers the oil fixing separate-layer production string of next time separately, can be with thick oil pump lower leaf flow string.
The purpose of this utility model is achieved in that it is by last pump assembly, UNICOM's joint, connecting tube, pump assembly is formed down.Last pump assembly is made up of last pump barrel, upper plug.Following pump assembly is made up of stressed tube, following pump barrel, lower plunger, outlet valve, oiling valve.Last pump barrel bottom connects with the UNICOM upper end of joint, and UNICOM joint lower end connects with stressed tube top, and the stressed tube bottom connects with oiling valve.The upper plug bottom connects with connecting tube top, and the connecting tube bottom connects with lower plunger, and the lower plunger bottom connects with outlet valve.When going into the well, last pump barrel top connects oil pipe on the pump, and the oiling valve bottom connects long-tail pipe and packet under the pump, axial force is born by last pump barrel, stressed tube, and following pump barrel does not bear axial force, and the rigidity and the intensity of stressed tube are big, resistance to compression and resistance to tension are strong, therefore, and can belt length tail pipe and packet production.
Upper plug top connects with rod string, during oil pumping, upper plug, connecting tube, lower plunger, outlet valve move simultaneously with sucker rod, pump internal pressure height during down stroke, the pump pressure outside is low, because the upper plug area is greater than the lower plunger area, therefore, under the linked hole effect on UNICOM's joint, the area that high pressure is born in the upper plug upper-end surface bears the area of high pressure greater than the upper plug lower end surface, produces a downward power under area difference and pressure difference effect, and this power helps sucker rod descending, thereby overcome the surface friction drag of viscous crude, make thick oil well energy ordinary production sucker rod.
Four, description of drawings
Accompanying drawing is the utility model embodiment's a half sectional view.
Among the figure: the 1st, last pump barrel, the 2nd, upper plug, the 3rd, UNICOM's joint, the 4th, connecting tube, the 5th, stressed tube, the 6th, following pump barrel, the 7th, lower plunger, the 8th, outlet valve, the 9th, oiling valve.
Five, embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
As shown in the figure, of the present utility model can the composition by last pump assembly, UNICOM's joint 3, connecting tube 4, following pump assembly by seat envelope thick oil pump.Last pump assembly is made up of last pump barrel 1, upper plug 2.Following pump assembly is made up of stressed tube 5, following pump barrel 6, lower plunger 7, outlet valve 8, oiling valve 9.Last pump barrel 1 bottom connects with UNICOM joint 3 upper ends, and UNICOM's joint 3 lower ends connect with stressed tube 5 tops, and stressed tube 5 bottoms connect (oiling valve can be that two covers are cascaded) with oiling valve 9.Upper plug 2 bottoms connect with connecting tube 4 tops, and connecting tube 4 bottoms connect with lower plunger 7, and lower plunger 7 bottoms connect with outlet valve 8.(outlet valve can be two covers, if outlet valve is two covers, two cover outlet valves can be installed in series in the lower plunger bottom, also can be installed in the upper/lower terminal of lower plunger respectively, also a cover can be installed in the lower plunger bottom, with the another set of connecting tube top that is installed in, upper plug bottom, or upper plug top.)
When going into the well, last pump barrel 1 top connects oil pipe on the pump, oiling valve 9 bottoms connect long-tail pipe and packet under the pump, axial force is born by last pump barrel 1, stressed tube 5, following pump barrel 6 does not bear axial force, and the rigidity and the intensity of stressed tube 5 are big, and resistance to compression and resistance to tension are strong, therefore, can belt length tail pipe and packet production.
Upper plug 2 tops connect with rod string, during oil pumping, upper plug 2, connecting tube 4, lower plunger 7, outlet valve 8 moves simultaneously with sucker rod, pump internal pressure height during down stroke, the pump pressure outside is low, because the area of upper plug 2 is greater than the area of lower plunger 7, therefore, under the linked hole effect on UNICOM's joint 3, the area that high pressure is born in upper plug 2 upper-end surfaces bears the area of high pressure greater than upper plug 2 lower end surfaces, produces a downward power under area difference and pressure difference effect, and this power helps sucker rod descending, thereby overcome the surface friction drag of viscous crude, make thick oil well energy ordinary production sucker rod.
Claims (2)
1, a kind of oil field machinery oil is with sealing thick oil pump by seat, form by last pump assembly, UNICOM's joint (3), connecting tube (4), following pump assembly, it is characterized in that pump assembly is made up of stressed tube (5), following pump barrel (6), lower plunger (7), outlet valve (8), oiling valve (9) down.
2, according to claim 1 can seat envelope thick oil pump, it is characterized in that pump barrel (1) bottom connects with UNICOM's joint (3) upper end, UNICOM's joint (3) lower end connects with stressed tube (5) top, stressed tube (5) bottom connects with oiling valve (9), upper plug (2) bottom connects with connecting tube (4) top, connecting tube (4) bottom connects with lower plunger (7), and lower plunger (7) bottom connects with outlet valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276194 CN2530061Y (en) | 2001-12-03 | 2001-12-03 | Seat sealable thick oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01276194 CN2530061Y (en) | 2001-12-03 | 2001-12-03 | Seat sealable thick oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2530061Y true CN2530061Y (en) | 2003-01-08 |
Family
ID=33680399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01276194 Expired - Fee Related CN2530061Y (en) | 2001-12-03 | 2001-12-03 | Seat sealable thick oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2530061Y (en) |
-
2001
- 2001-12-03 CN CN 01276194 patent/CN2530061Y/en not_active Expired - Fee Related
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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 |