CN1239825C - Combined oil-well pump - Google Patents
Combined oil-well pump Download PDFInfo
- Publication number
- CN1239825C CN1239825C CN 02121107 CN02121107A CN1239825C CN 1239825 C CN1239825 C CN 1239825C CN 02121107 CN02121107 CN 02121107 CN 02121107 A CN02121107 A CN 02121107A CN 1239825 C CN1239825 C CN 1239825C
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- China
- Prior art keywords
- oil
- well pump
- pump
- minor diameter
- oil pipe
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- 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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- 239000003129 oil well Substances 0.000 title claims abstract description 74
- 238000000605 extraction Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims description 36
- 239000007788 liquid Substances 0.000 abstract description 29
- 238000005086 pumping Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
A combined oil-well pump in oil extraction engineering comprises a large-diameter oil-well pump 3, a small-diameter ring-shaped valve oil-well pump 50, an oil pipe fixer 6, an oil pumping rod 4 and the like, wherein the small-diameter ring-shaped valve oil-well pump 50 is connected with a small oil pipe 1, the other end of the oil pumping rod 4 is connected with a plunger of the small-diameter ring-shaped valve oil-well pump 50, the lower part of the plunger of the small-diameter ring-shaped valve oil-well pump 50 is connected with another oil pumping rod 4, the other end of the oil pumping rod 4 is connected with the plunger of the large-diameter oil-well pump 3, liquid is pumped by the large-diameter oil-well pump, the liquid is pumped into an annular space between the large oil pipe and the small oil pipe after being boosted by the large pump to form a second liquid level, the submergence formed by the liquid level is much larger than the submergence naturally formed by the pressure of an oil reservoir, a suction inlet of the small pump is positioned under the, therefore, the purpose of improving the drainage capacity of the low-submergence oil reservoir can be achieved.
Description
Relate to the field
The present invention relates to a kind of combination oil-well pump on the petroleum production engineering.
Background technique
When using oil well pump to carry out petroleum production, the submergence of pump and the full level of pump and pump efficiency have very big relation.When reservoir pressure was low, the submergence of Xing Chenging was very little naturally, and the full level of pump is also very little, was the diameter that enlarges pump for the common way of the lifting rate that improves pump.And behind the expansion big pump diameter, last when carrying pump plunger sucker rod and pumping unit to bear bigger power, the expansion in pump footpath is restricted.
Summary of the invention
The object of the present invention is to provide a kind of combination of adopting major diameter pump and minor diameter pump, solved by big pump pumping liquid and given rise to surface process, thereby be implemented in the combination oil-well pump that low submergence oil reservoir improves lifting rate by little pump.
The present invention is achieved in that and comprises large-diameter extraction oil pump 3, the ring-like valve oil-well pump 50 of minor diameter, little oil pipe 1, Big Inch 2, oil pipe fixture 6, sleeve pipe 9, well head 10, sucker rod 4, pumping unit 15.Sleeve pipe 9, well head 10, sucker rod 4, pumping unit 15 belong to the necessary equipment of oil well, do not belong to content of the present invention.It is characterized in that: Big Inch 2 is arranged in the sleeve pipe 9.By oil pipe fixture 6, Big Inch 2 roof anchorage are at little oil pipe 1 middle part.Large-diameter extraction oil pump 3 inserts sleeve pipe 9 and is fixed on Big Inch 2 bottoms, and the ring-like valve oil-well pump 50 of minor diameter is fixed on little oil pipe 1 bottom.Little oil pipe 1 inserts in the Big Inch 2 from the oil pipe fixture 6 at Big Inch 2 tops, and extension is connected with the top of the ring-like valve oil-well pump 50 of minor diameter downwards.In the ring-like valve oil-well pump 50 of minor diameter, the lower end of sucker rod 4 is connected with the plunger head of the ring-like valve oil-well pump 50 of minor diameter.The bottom of ring-like valve oil-well pump 50 plungers of minor diameter is fixed with pony rod 4, and pony rod 4 passes the ring-like valve oil-well pump of minor diameter 50 bottoms, and pony rod 4 lower ends are connected with the plunger head that large-diameter extraction is taken out pump 3.On the oil pipe fixture 6 through hole is arranged.The effect of through hole is after the liquid of large-diameter extraction oil pump 3 extractions is full of Big Inch 2, can flow back to first liquid level, 7 places of sleeve pipe 9 by through hole.
The present invention can also install minor diameter fluid power feedback oil well pump 51 in Big Inch 2, minor diameter fluid power feedback oil well pump 51 is fixed on little oil pipe 1 bottom.Little oil pipe 1 inserts in the Big Inch 2 from the oil pipe fixture 6 at Big Inch 2 tops, and extension downwards is connected with the top of minor diameter fluid power feedback oil well pump 51.In minor diameter fluid power feedback oil well pump 51, the lower end of sucker rod 4 is connected with the plunger head of minor diameter fluid power feedback oil well pump 51.The bottom of minor diameter fluid power feedback oil well pump 51 plungers is fixed with pony rod 4, and pony rod 4 passes minor diameter fluid power feedback oil well pump 51 bottoms, and pony rod 4 lower ends are connected with the plunger head that large-diameter extraction is taken out pump 3.On the oil pipe fixture 6 through hole is arranged.
Annular space between Big Inch 2, the little oil pipe 1 forms second liquid level 8.
The invention has the advantages that:
Utilize large-diameter extraction oil pump pumping liquid, enter the ring-like space between the big little oil pipe after big pump boosts liquid, form second liquid level in this ring-like space, the submergence that this liquid level forms is more a lot of greatly than the submergence that is formed naturally by reservoir pressure.Little pump intake is under this big submergence, so the full level height of pump, by the minor diameter oil well pump liquid is given rise to ground.Sucker rod and pumping unit can bear little pump in last power when carrying pump plunger.Thus.Can be implemented in the purpose that low submergence oil reservoir improves lifting rate.
Description of drawings
Fig. 1 adopts the structural representation of minor diameter annular valve oil well pump for the present invention;
Fig. 2 adopts the structural representation of minor diameter fluid power feedback oil well pump for the present invention;
Fig. 3 adopt for the present invention minor diameter annular valve oil well pump unipump install and use schematic representation;
Fig. 4 adopt for the present invention minor diameter fluid power feedback oil well pump unipump install and use schematic representation.
Concrete enforcement
As Fig. 1, shown in Figure 3, unipump is taken out oil recovery necessarieses such as pump 3, the ring-like valve oil-well pump 50 of minor diameter, little oil pipe 1, Big Inch 2, oil pipe fixture 6 and sleeve pipe 9, well head 10, sucker rod 4, pumping unit 15 and is formed by large-diameter extraction.140 millimeters of sleeve pipe 9 internal diameters; 100 millimeters of Big Inch 2 internal diameters, 300 meters of length; 63.5 millimeters of little oil pipe 1 internal diameters.Big Inch 2 is arranged in the sleeve pipe 9, and by oil pipe fixture 6, Big Inch 2 roof anchorage are at little oil pipe 1 middle part.Large-diameter extraction oil pump 3 inserts sleeve pipe 9 and is fixed on Big Inch 2 bottoms.The ring-like valve oil-well pump 50 of minor diameter is fixed on little oil pipe 1 bottom.Little oil pipe 1 inserts in the Big Inch 2 from the oil pipe fixture 6 at Big Inch 2 tops, and extension is connected with the top of the ring-like valve oil-well pump 50 of minor diameter downwards.In the ring-like valve oil-well pump 50 of minor diameter, the lower end of sucker rod 4 is connected with the plunger head of the ring-like valve oil-well pump 50 of minor diameter.The bottom of ring-like valve oil-well pump 50 plungers of minor diameter is fixed with pony rod 4, and pony rod 4 passes the ring-like valve oil-well pump of minor diameter 50 bottoms, and pony rod 4 lower ends are connected with the plunger head that large-diameter extraction is taken out pump 3.On the oil pipe fixture 6 through hole is arranged.
When upstroke, the standing valve of the up pump of plunger of large-diameter extraction oil pump 3 is opened, liquid under first producing fluid level 7 enters in the pump, the liquid that traveling valve cuts out plunger upper part be discharged from enter big, little oil pipe 2, ring-like space between 1, the standing valve of the up pump of ring-like valve oil-well pump 50 plungers of minor diameter is opened, liquid under second producing fluid level 8 enters in the pump, traveling valve cuts out, the liquid of plunger upper part is discharged from and enters little oil pipe 1 arrival ground, and when downward movement, the plunger of large-diameter extraction oil pump 3 is descending, the standing valve of pump 3 cuts out, traveling valve is opened, and the liquid of plunger bottom enters the space of plunger upper part, and ring-like valve oil-well pump 50 plungers of minor diameter are descending, the standing valve of pump cuts out, traveling valve is opened, and the liquid of plunger bottom enters the space of plunger upper part, and above process is back and forth finished oil pumping process.
When the liquid that is drained into the ring-like space between the large and small oil pipe 2,1 when large-diameter extraction oil pump 3 can not all be discharged by the ring-like valve oil-well pump of minor diameter 50, second producing fluid level 8 will raise, the lifting rate of the ring-like valve oil-well pump 50 of minor diameter is increased, when second producing fluid level 8 surpasses the position of oil pipe fixture 6, liquid will leak into sleeve pipe 9 from the through hole of oil pipe fixture 6.
Embodiment 2:
As 2, shown in Figure 4, unipump is taken out oil recovery necessarieses such as pump 3, minor diameter fluid power feedback oil well pump 51, little oil pipe 1, Big Inch 2, oil pipe fixture 6 and sleeve pipe 9, well head 10, sucker rod 4, pumping unit 15 and is formed by large-diameter extraction.140 millimeters of sleeve pipe 9 internal diameters; 100 millimeters of Big Inch 2 internal diameters, 300 meters of length; 63.5 millimeters of little oil pipe 1 internal diameters.Minor diameter fluid power feedback oil well pump 51 is fixed on little oil pipe 1 bottom.Little oil pipe 1 inserts in the Big Inch 2 from the oil pipe fixture 6 at Big Inch 2 tops, and extension downwards is connected with the top of minor diameter fluid power feedback oil well pump 51.In minor diameter fluid power feedback oil well pump 51, the lower end of sucker rod 4 is connected with the plunger head of minor diameter fluid power feedback oil well pump 51.The bottom of minor diameter fluid power feedback oil well pump 51 plungers is fixed with pony rod 4, and pony rod 4 passes minor diameter fluid power feedback oil well pump 51 bottoms, and pony rod 4 lower ends are connected with the plunger head that large-diameter extraction is taken out pump 3.On the oil pipe fixture 6 through hole is arranged, 2 of the quantity of through hole, 10 millimeters of the diameters of through hole.
The plunger that pumping unit 15 drives the plunger of minor diameter fluid power feedback oil well pumps 51 and large-diameter extraction oil pump 3 by sucker rod 4 is done and is pumped.
When upstroke, the plunger of large-diameter extraction oil pump 3 is up, the standing valve of pump is opened, and the liquid under first producing fluid level 7 enters in the pump, and traveling valve cuts out, the liquid of plunger upper part is discharged from the ring-like space that enters between the large and small oil pipe 2,1, minor diameter fluid power feedback oil well pump 51 plungers are up, and the standing valve of pump is opened, and the liquid under second producing fluid level 8 enters in the pump, traveling valve cuts out, and the liquid of plunger upper part is discharged from and enters little oil pipe 1 arrival ground.When downward movement, the plunger of large-diameter extraction oil pump 3 is descending, the standing valve of pump 3 cuts out, and traveling valve is opened, and the liquid of plunger bottom enters the space of plunger upper part, minor diameter fluid power feedback oil well pump 51 plungers are descending, the standing valve of pump 51 cuts out, and traveling valve is opened, and diminishes with the volume between descending traveling valve of plunger and the standing valve, the liquid of bottom enters the space on traveling valve top, and above process is back and forth finished oil pumping process.
When big straight liquid of appointing oil well pump 3 to be drained into the ring-like space between the large and small oil pipe 2,1 can not all be discharged by minor diameter fluid power feedback oil well pump 51, second producing fluid level 8 will raise, the lifting rate of minor diameter fluid power feedback oil well pump 51 is increased, when second producing fluid level 8 surpasses the position of oil pipe fixture 6, liquid will leak into sleeve pipe 9 from the through hole of oil pipe fixture 6.
Claims (3)
1. combination oil-well pump, comprise large-diameter extraction oil pump (3), the ring-like valve oil-well pump of minor diameter (50), little oil pipe (1), Big Inch (2), oil pipe fixture (6), it is characterized in that: Big Inch (2) is arranged in the sleeve pipe (9), by oil pipe fixture (6), Big Inch (2) roof anchorage is at little oil pipe (1) middle part, large-diameter extraction oil pump (3) inserts sleeve pipe (9) and is fixed on Big Inch (2) bottom, the ring-like valve oil-well pump of minor diameter (50) is fixed on little oil pipe (1) bottom, little oil pipe (1) inserts in the Big Inch (2) from the oil pipe fixture (6) at Big Inch (2) top, and extension is connected with the top of the ring-like valve oil-well pump of minor diameter (50) downwards, in the ring-like valve oil-well pump of minor diameter (50), the lower end of sucker rod (4) is connected with the plunger head of the ring-like valve oil-well pump of minor diameter (50), the bottom of the ring-like valve oil-well pump of minor diameter (50) plunger is fixed with pony rod (4), pony rod (4) passes the ring-like valve oil-well pump of minor diameter (50) bottom, and pony rod (4) lower end is connected with the plunger head that large-diameter extraction is taken out pump (3), and the oil pipe fixture has through hole on (6).
2. combination oil-well pump according to claim 1, it is characterized in that: minor diameter fluid power feedback oil well pump (51) is fixed on little oil pipe (1) bottom, little oil pipe (1) inserts in the Big Inch (2) from the oil pipe fixture (6) at Big Inch (2) top, and extension downwards is connected with the top of minor diameter fluid power feedback oil well pump (51), in minor diameter fluid power feedback oil well pump (51), the lower end of sucker rod (4) is connected with the plunger head of minor diameter fluid power feedback oil well pump (51), the bottom of minor diameter fluid power feedback oil well pump (51) plunger is fixed with pony rod (4), pony rod (4) passes minor diameter fluid power feedback oil well pump (51) bottom, and pony rod (4) lower end is connected with the plunger head that large-diameter extraction is taken out pump (3).
3. according to claim 1 or 2 described combination oil-well pumps, it is characterized in that: the annular space between Big Inch (2), the little oil pipe (1) forms second producing fluid level (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121107 CN1239825C (en) | 2002-06-07 | 2002-06-07 | Combined oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121107 CN1239825C (en) | 2002-06-07 | 2002-06-07 | Combined oil-well pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1464195A CN1464195A (en) | 2003-12-31 |
| CN1239825C true CN1239825C (en) | 2006-02-01 |
Family
ID=29742787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02121107 Expired - Fee Related CN1239825C (en) | 2002-06-07 | 2002-06-07 | Combined oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1239825C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316141C (en) * | 2004-01-10 | 2007-05-16 | 中国石油集团钻井工程技术研究院江汉机械研究所 | Under well hydraulic lifter |
| CN106545487A (en) * | 2015-09-16 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of hollow oil well pump of ring valve overhead type |
| CN108222891A (en) * | 2018-03-20 | 2018-06-29 | 西南石油大学 | A kind of composite oil pumping device of linear dynamo oil pump and electric submersible pump concatenation |
| CN109577915A (en) * | 2018-11-02 | 2019-04-05 | 中国石油天然气股份有限公司 | Compensation type anti-pollution well washing device and well washing method |
-
2002
- 2002-06-07 CN CN 02121107 patent/CN1239825C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1464195A (en) | 2003-12-31 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060201 Termination date: 20210607 |