CN1127611C - Water-replaced oil exploiting method - Google Patents
Water-replaced oil exploiting method Download PDFInfo
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- CN1127611C CN1127611C CN 01132702 CN01132702A CN1127611C CN 1127611 C CN1127611 C CN 1127611C CN 01132702 CN01132702 CN 01132702 CN 01132702 A CN01132702 A CN 01132702A CN 1127611 C CN1127611 C CN 1127611C
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- oil
- water
- well pump
- hydraulic deep
- pump
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Abstract
The present invention relates to a water-replaced oil exploiting method for secondary oil exploitation. Filtered pure water is pumped into a hydraulic deep well pump positioned in an oil well through a high-pressure water pipe after being pressurized through a water pump to drive the hydraulic deep well pump to operate, crude oil enters the hydraulic deep well pump through an oil exploiter and then rises to the ground along an oil outlet pipe, and then the water accomplishing work is discharged into the lower part of an oil layer through a water discharger which is more than three meters lower than the oil extractor to form confined water. The present invention has the characteristics of reduction of energy consumption, simultaneous oil exploitation and replenishment of the confined water and mechanism and equipment simplification, and is especially suitable for offshore oil exploitation.
Description
The present invention relates to be used for the oil exploitation technology of secondary oil recovery.
Contain pool in the earth's crust and be generally sealing or semi-enclosed space, the oil recovery initial stage, crude oil can flow on the ground automatically owing to the infiltration pressure of original pressure of oil reservoir or surface water.Along with the increase of oil production, the original pressure of oil reservoir is lost gradually, even forms negative pressure, at this moment needs to utilize secondary oil recovery technology recover petroleum.One of technology is to insert oil pipe, adopts polished rod formula suction method to extract crude oil out.Two of technology is that the hydraulic deep-well pump is installed in oil well, earlier ground crude oil is become hydraulic oil after the oil pump pressurization, pumps into the hydraulic deep-well pump through high-pressure oil pipe and makes it running, adds kinetic energy and converts potential energy to, and promptly W=mgh rises on the ground underground crude oil.In order not cause land subsidence and groundwater table decreasing, all need in the time of secondary oil recovery to replenish artesian water toward oil reservoir interpolation oral siphon.The defective of said method is that power consumption increases along with the increase of oil well depth, and energy consumption is big.This external demand is installed special-purpose artesian water supplementary device.
The purpose of this invention is to provide a kind of water-replaced oil exploiting method, accomplish that energy consumption is low, equipment is simple.
Design scheme of the present invention is as follows: will input to the hydraulic deep-well pump that be arranged in oil well with water pump pressurization back as power source through the water purification that filters in advance, hydraulic deep-well pump running is pumped on the ground crude oil, and the water of finishing merit is lower than the water trap of oil extraction device more than three meters and enters below the oil reservoir as artesian water through the position.
Because water and oil are the equivalent displacements, so regardless of formation pressure, its energy exchange state can not change, promptly
W＝GH＝mgH＝ρvgH
Because former oil-in and water out are on the same depth location substantially on the hydraulic deep-well pump, crude exports and water inlet all are on the close height in ground, so water enters the height difference H of hydraulic deep-well pump from ground
WaterApproximate crude oil is pumped down to ground from the hydraulic deep-well pump height difference H greatly
Oil, i.e. H
Water=H
Oil
∵ ρ
Water＞ρ
Oil
∴ W
Water＞W
Oil
That is to say that water injects hydraulic deep-well pump autophage from ground potential energy is pumped to the needed potential energy in ground greater than oil from the hydraulic deep-well pump, does not need to consume other kinetic energy theoretically.But, consider the energy loss that factors such as viscosity of crude and mechanical friction cause, so the present invention is provided with pressure pump, with makeup energy consumption.This energy consumption has only 1/10th of existing oil production method.
Compared with prior art, characteristics of the present invention are that energy consumption reduces, and have replenished artesian water in the time of oil recovery, have simplified mechanism and equipment.The present invention is specially adapted to offshore oil exploitation, as long as seawater cleaning just can directly be used as artesian water, solves the crude oil leakage problem fully.
Describe operating principle of the present invention and method in detail below in conjunction with drawings and Examples:
Fig. 1 is a water-replaced oil exploiting method operating principle schematic diagram.
Among the figure, 1 for driving the motor of water pump.
Method of the present invention is that the water purification that will filter pressurizes after high-pressure water pipe 3 pumps into the hydraulic deep-well pump 4 that is arranged in oil well by water pump 2, drive 4 runnings of hydraulic deep-well pump, crude oil rises on the ground along flowline 6 after oil extraction device 5 enters hydraulic deep-well pump 4, and the water of finishing merit becomes artesian water by entering the oil reservoir bottom than the low water trap 7 more than three meters in oil extraction device 5 positions.
Claims (1)
1, a kind of water-replaced oil exploiting method that is used for secondary oil recovery, it is characterized in that the water purification that will filter pressurizes after high-pressure water pipe (3) pumps into the hydraulic deep-well pump (4) that is arranged in oil well by water pump (2), drive hydraulic deep-well pump (4) running, crude oil rises on the ground along flowline (6) after oil extraction device (5) enters hydraulic deep-well pump (4), and the water of finishing merit becomes artesian water by entering the oil reservoir bottom than the low water trap (7) more than three meters in oil extraction device (5) position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01132702 CN1127611C (en) | 2001-09-03 | 2001-09-03 | Water-replaced oil exploiting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01132702 CN1127611C (en) | 2001-09-03 | 2001-09-03 | Water-replaced oil exploiting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403683A CN1403683A (en) | 2003-03-19 |
| CN1127611C true CN1127611C (en) | 2003-11-12 |
Family
ID=4671519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01132702 Expired - Fee Related CN1127611C (en) | 2001-09-03 | 2001-09-03 | Water-replaced oil exploiting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1127611C (en) |
-
2001
- 2001-09-03 CN CN 01132702 patent/CN1127611C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1403683A (en) | 2003-03-19 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |