CN109162675A - A kind of pressure control oil production method - Google Patents
A kind of pressure control oil production method Download PDFInfo
- Publication number
- CN109162675A CN109162675A CN201811074465.6A CN201811074465A CN109162675A CN 109162675 A CN109162675 A CN 109162675A CN 201811074465 A CN201811074465 A CN 201811074465A CN 109162675 A CN109162675 A CN 109162675A
- Authority
- CN
- China
- Prior art keywords
- oil
- submersible pump
- electric submersible
- dynamic
- frequency
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000003129 oil well Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000013507 mapping Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims 1
- 239000011229 interlayer Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 58
- 239000010410 layer Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The present invention provides a kind of pressure control oil production method, by electric submersible pump G.I.H, it connect electric submersible pump with frequency conversion speed-adjusting system, determine dynamic oil level, and the frequency control module in frequency conversion speed-adjusting system sets pid control algorithm parameter, start electric submersible pump, in lifting process, dynamic liquid level monitor measures the actual dynamic oil level of oil well, and it will test in consequential signal input frequency conversion speed-adjusting system, frequency control module is by practical dynamic oil level value compared with setting value in frequency conversion speed-adjusting system, the difference of the two is set the frequency converter driven after pid control algorithm in frequency conversion speed-adjusting system, frequency values needed for finally obtaining driving electric submersible pump control brake-fluid level setting value.The present invention maintains stratum energy without filling the water, and can employ long well section, serious interlayer interference, low energy stripper well.
Description
Technical field
The invention belongs to oil field Lifting Technique fields, and in particular to a kind of pressure control oil production method.
Background technique
With oil field development to middle and later periods, the low layer energy of some oil wells is being gradually reduced, in order to improve this kind of oil well
Development degree, waterflooding extraction becomes one of the main means that each Middle-later Development Stage of Oilfield increases oily stable yields, for the oil of low output
For well, water filling undoubtedly improves cost of winning；In addition, some oil wells need perforation to mend layer, the oil reservoir newly penetrated out and old interlayer
There can be interlayer interference.For this kind of low energy, the lifting of low-producing oil well, common technology means have negative pressure production at present, but
Negative pressure production can not play a role for the oil well of long well section, serious interlayer interference, for this reason, it may be necessary to invent a kind of without filling the water dimension
Stratum energy is held, and the oil production method of long well section, serious interlayer interference, low energy stripper well can be employed.
Summary of the invention
The purpose of the present invention is to provide a kind of pressure control oil production methods, maintain stratum energy without filling the water, and can employ length
Well section, serious interlayer interference, low energy stripper well.
Pressure control oil production method of the invention, includes following steps:
Step 1: will include the lifting column G.I.H of electric submersible pump, and electric submersible pump is made to be in oil reservoir n lower boundary or less；
Step 2: lifting column being installed in well head and is fixed, electric submersible pump is connect with external frequency conversion speed-adjusting system, in well
Dynamic liquid level monitor is installed at mouthful；
Step 3: dynamic oil level is determined according to the lower-continuous mapping of oil reservoir stratum energy and electric submersible pump；
Step 4: the dynamic oil level according to determined by step 3, the frequency control module setting in frequency conversion speed-adjusting system
Pid control algorithm parameter；
Step 5: starting electric submersible pump, in lifting process, dynamic liquid level monitor measures the actual dynamic oil level of oil well, and
It will test in consequential signal input frequency conversion speed-adjusting system, frequency control module is by practical dynamic oil level value in frequency conversion speed-adjusting system
(testing result of dynamic liquid level monitor) (expects the target depth reached, that is, step 3 with setting value after the completion of step 4 setting
Identified dynamic oil level) compare, the difference of the two drives in frequency conversion speed-adjusting system after step 4 sets pid control algorithm
Frequency converter, finally obtain driving electric submersible pump control brake-fluid level setting value needed for frequency values.
Wherein, electric submersible pump is in oil reservoir n lower boundary or less 200-500m in the step 1.
Wherein, the lifting column further includes cable, and the electric submersible pump passes through the cable and external frequency control system
System connection.
Wherein, the lifting column further includes oil pipe, has annular space between the casing in the oil pipe and well, described
Well head is equipped with constant pressure valve, and in lifting process, the gas that each oil reservoir generates enters the annular space of oil pipe and casing, and in pressure
When greater than constant pressure valve setting value, constant pressure valve discharges gas automatically.
Wherein, the dynamic oil level determined in the step 3 is preferably set at oil reservoir n lower boundary.
Wherein, the dynamic oil level signal that the dynamic liquid level monitor detects is by being converted into the analog signal of 4-20mA
Transmission.
The beneficial effects of the present invention are: maintaining stratum energy without filling the water；Long well section, serious interlayer interference, low can be employed
It can stripper well；Hydrodynamic face on-line monitoring and electric submersible pump Frequency servo.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is: the structural schematic diagram of pressure control oil production method.
Fig. 2 is: the control flow chart of pressure control oil production method of the present invention.
In figure: 1. fuel-displaced manifolds, 2. constant pressure valves, 3. oil reservoirs one, 4. oil reservoirs two, 5. oil reservoirs three, (n is positive whole 6. oil reservoir n
Number), 7. hydrodynamic faces, 8. frequency conversion speed-adjusting systems, 9. dynamic liquid level monitors, 10. cables, 11. oil pipes, 12. casings, 13. electric submersible pumps.
Specific embodiment
In order to better understand the present invention, below with reference to specific attached drawing, the present invention will be described in detail.
The structure of oil well of pressure control oil production method of the present invention is as shown in Figure 1, be equipped with casing 12, from top to bottom across oil reservoir in well
One 3, oil reservoir 24, oil reservoir 35 ... oil reservoir n 6.Lifting column includes cable 10, oil pipe 11 and electric submersible pump 13, lifting column
From there are annular spaces between well head G.I.H, oil pipe 11 and casing 12.Well head is equipped with constant pressure valve 2,8 and of frequency conversion speed-adjusting system
Dynamic liquid level monitor 9, the annular space between constant pressure valve 2 and oil pipe 11 and casing 12, which can be opened and closed, to be connected to, and frequency conversion speed-adjusting system 8 is logical
It crosses cable 10 to connect with electric submersible pump 13, and signal connects between frequency conversion speed-adjusting system 8 and dynamic liquid level monitor 9, frequency control system
Frequency converter and frequency control module, data acquisition and control are equipped in system 8.It is additionally provided with outside well head for fuel-displaced fuel-displaced manifold
1。
Using the above structure, pressure control oil production method of the invention specifically passes through following steps:
1) tripping in: the lifting column tripping in for successively being formed cable 10, oil pipe 11, electric submersible pump 13 according to oil-well strata situation
In well, and electric submersible pump 13 is in oil reservoir n lower boundary or less 200-500m.
2) ground is installed: installation well head hangs lifting column, and the cable 10 is connect with frequency conversion speed-adjusting system 8,
Sleeve gate on well head both sides installs dynamic liquid level monitor 9 and constant pressure valve 2 respectively, moves liquid level monitor 9 and frequency control system
It is connected between system 8 with signal wire.
3) parameter setting: determine that dynamic oil level is (general dynamic according to the lower-continuous mapping of oil reservoir stratum energy and electric submersible pump 13
Liquid level is set at oil reservoir n lower boundary, and hydrodynamic face is set in any position of oil well and also belongs to the scope of this patent).According to true
Fixed dynamic oil level, the frequency transformer control module in frequency conversion speed-adjusting system 8 set pid control algorithm parameter.
4) produce: starting electric submersible pump 13, in lifting process, it is deep that dynamic liquid level monitor 9 measures the actual hydrodynamic face of oil well
It spends, and dynamic oil level is converted into the analog signal of 4-20mA, and input in frequency conversion speed-adjusting system 8, in frequency conversion speed-adjusting system 8
Frequency control module is by practical dynamic oil level value compared with setting value, and the difference of the two is after step 4 sets pid control algorithm
The frequency converter in frequency conversion speed-adjusting system 8 is driven, frequency needed for finally obtaining driving control 7 setting value of brake-fluid level of electric submersible pump 13
Value, makes hydrodynamic face 7 be maintained at setting position.Crude oil is lifted to fuel-displaced manifold 1 by electric submersible pump 13.Control flow is as shown in Figure 2.
5) automatically adjust casing pressure: in lifting process, oil reservoir 1, oil reservoir 24, oil reservoir 35 ... oil reservoir n 6 generate
Gas enters the annular space between oil pipe 11 and casing 12, when between oil pipe 11 and casing 12 pressure greater than constant pressure valve 2 set
When value, constant pressure valve 2 discharges gas automatically.
The present invention minimizes the stream pressure of oil well by the height in closed-loop control hydrodynamic face, make each layer oil stream of oil well according to
Lowest level is automatically flowed by self-energy, no longer needs to fill the water maintenance stratum energy in this way, saves cost of winning, and oil well institute
There is layer that can employ simultaneously, eliminates the pressure disturbances of interlayer.When dynamic oil level is less than dynamic level setpoint in well, frequency conversion
Speed-regulating system (8) adjust frequency, driving electric submersible pump (13) increase jacking capacity, when in well dynamic oil level be greater than hydrodynamic face setting
When value, frequency conversion speed-adjusting system (8) adjusts frequency, and driving electric submersible pump (13) reduces jacking capacity, is always maintained at hydrodynamic face and sets
Definite value has achieved the purpose that pressure control recovers the oil.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of pressure control oil production method, includes following steps:
Step 1: will include the lifting column G.I.H of electric submersible pump (13), and electric submersible pump (13) is made to be in oil reservoir n lower boundary
Below；
Step 2: lifting column is installed in well head and is fixed, electric submersible pump (13) is connect with external frequency conversion speed-adjusting system (8),
It is installed at well head dynamic liquid level monitor (9)；
Step 3: dynamic oil level is determined according to the lower-continuous mapping of oil reservoir stratum energy and electric submersible pump (13)；
Step 4: the dynamic oil level according to determined by step 3, the frequency control module setting in frequency conversion speed-adjusting system (8)
Pid control algorithm parameter；
Step 5: starting electric submersible pump (13), in lifting process, it is deep that dynamic liquid level monitor (9) measure the actual hydrodynamic face of oil well
Degree, and will test in consequential signal input frequency conversion speed-adjusting system (8), frequency control module will be practical in frequency conversion speed-adjusting system (8)
(the estimated target reached is deep after the completion of step 4 setting with setting value for dynamic oil level value (testing result of dynamic liquid level monitor)
Degree, that is, dynamic oil level determined by step 3) compare, the difference of the two drives after step 4 sets pid control algorithm to be become
Frequency converter in frequency modulation speed system (8), frequency values needed for finally obtaining driving electric submersible pump (13) control brake-fluid level setting value.
2. pressure control oil production method according to claim 1, which is characterized in that electric submersible pump (13) is in oil in the step 1
200-500m below layer n lower boundary.
3. pressure control oil production method according to claim 1, which is characterized in that the lifting column further includes cable (10),
The electric submersible pump (13) is connect by the cable (10) with external frequency conversion speed-adjusting system (8).
4. pressure control oil production method according to claim 1, which is characterized in that the lifting column further includes oil pipe (11),
There is annular space, the well head is equipped with constant pressure valve (2), lifting process between casing (12) in the oil pipe (11) and well
In, the gas that each oil reservoir generates enters the annular space of oil pipe (11) Yu casing (12), and sets in pressure greater than constant pressure valve (2)
When value, constant pressure valve (2) discharges gas automatically.
5. pressure control oil production method according to claim 1, which is characterized in that the dynamic oil level determined in the step 3
It is set at oil reservoir n lower boundary.
6. pressure control oil production method according to claim 1, which is characterized in that the dynamic liquid level monitor (9) detected
Dynamic oil level signal is by being converted into the analog signal transmission of 4-20mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074465.6A CN109162675A (en) | 2018-09-14 | 2018-09-14 | A kind of pressure control oil production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074465.6A CN109162675A (en) | 2018-09-14 | 2018-09-14 | A kind of pressure control oil production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109162675A true CN109162675A (en) | 2019-01-08 |
Family
ID=64879473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811074465.6A Pending CN109162675A (en) | 2018-09-14 | 2018-09-14 | A kind of pressure control oil production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109162675A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734651A (en) * | 2020-07-08 | 2020-10-02 | 浙江都美电气技术股份有限公司 | Control system for submersible/diving system |
| CN113006765A (en) * | 2021-05-06 | 2021-06-22 | 杭州乾景科技有限公司 | Multi-well combined control mining method |
| RU2758326C1 (en) * | 2021-04-12 | 2021-10-28 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Method for regulating the operating mode of a well equipped with an electric center pump installation in an inter-well pumping system |
| WO2022002147A1 (en) * | 2020-07-01 | 2022-01-06 | 浙江都美电气技术股份有限公司 | Automatic control method, apparatus and system for working fluid level |
| RU2773403C1 (en) * | 2022-05-18 | 2022-06-03 | Публичное акционерное общество "Нефтяная компания "Роснефть" (ПАО "НК "Роснефть") | Method for regulating the energy consumption of oil-producing downhole equipment |
| CN116865630A (en) * | 2023-08-09 | 2023-10-10 | 东营市沃格艾迪石油技术有限公司 | Motor variable-frequency speed regulation control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022002147A1 (en) * | 2020-07-01 | 2022-01-06 | 浙江都美电气技术股份有限公司 | Automatic control method, apparatus and system for working fluid level |
| CN111734651A (en) * | 2020-07-08 | 2020-10-02 | 浙江都美电气技术股份有限公司 | Control system for submersible/diving system |
| RU2758326C1 (en) * | 2021-04-12 | 2021-10-28 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Method for regulating the operating mode of a well equipped with an electric center pump installation in an inter-well pumping system |
| CN113006765A (en) * | 2021-05-06 | 2021-06-22 | 杭州乾景科技有限公司 | Multi-well combined control mining method |
| RU2773403C1 (en) * | 2022-05-18 | 2022-06-03 | Публичное акционерное общество "Нефтяная компания "Роснефть" (ПАО "НК "Роснефть") | Method for regulating the energy consumption of oil-producing downhole equipment |
| CN116865630A (en) * | 2023-08-09 | 2023-10-10 | 东营市沃格艾迪石油技术有限公司 | Motor variable-frequency speed regulation control system |
| CN116865630B (en) * | 2023-08-09 | 2023-12-08 | 东营市沃格艾迪石油技术有限公司 | Motor variable-frequency speed regulation control system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201105 Address after: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Applicant after: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Applicant after: DAGANG OILFIELD GROUP Co.,Ltd. Applicant after: CHINA NATIONAL PETROLEUM Corp. Address before: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Applicant before: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. |
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Application publication date: 20190108 |