CA2667535A1 - Oil extraction system and oil extraction supervisory system - Google Patents
Oil extraction system and oil extraction supervisory system Download PDFInfo
- Publication number
- CA2667535A1 CA2667535A1 CA002667535A CA2667535A CA2667535A1 CA 2667535 A1 CA2667535 A1 CA 2667535A1 CA 002667535 A CA002667535 A CA 002667535A CA 2667535 A CA2667535 A CA 2667535A CA 2667535 A1 CA2667535 A1 CA 2667535A1
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- Canada
- Prior art keywords
- pump
- oil extraction
- inverter
- oil
- sucker rod
- 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.)
- Abandoned
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 74
- 239000003921 oil Substances 0.000 claims abstract description 79
- 239000010779 crude oil Substances 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 37
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- 238000004519 manufacturing process Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 244000005700 microbiome Species 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000004530 micro-emulsion Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 poly(alkyl methacrylate Chemical compound 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 239000000230 xanthan gum Substances 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
-
- 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
- E21B47/009—Monitoring of walking-beam pump systems
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Processing Of Solid Wastes (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
Provided are an oil extracting system, which is enabled to extract oil efficiently by utilizing a pump-off signal in secondary and tertiary extractions, and an oil extraction monitoring system. The oil extracting system comprises a sucker rod pump (10) disposed in an oil well (2) for sucking crude oil, a signal detecting unit (12) for detecting an pump-off signal of the sucker rod pump (10), and a press-in pump (20) disposed in a press-in well (3) for pressing in a fluid to be used for the secondary extraction or the tertiary extraction. The press-in pump (20) is run on the basis of the pump-off signal detected by the signal detecting unit (12).
Description
= CA 02667535 2009-04-24 DESCRIPTION
OIL EXTRACTION SYSTEM AND OIL EXTRACTION SUPERVISORY
SYSTEM
TECHNICAL FIELD
[0001]
The present invention relates to an oil extraction system for recovering oil forcibly and an oil extraction supervisory system for supervising an oil extraction system.
BACKGROUND ART
OIL EXTRACTION SYSTEM AND OIL EXTRACTION SUPERVISORY
SYSTEM
TECHNICAL FIELD
[0001]
The present invention relates to an oil extraction system for recovering oil forcibly and an oil extraction supervisory system for supervising an oil extraction system.
BACKGROUND ART
[0002]
At first, the oil extraction from an underground oil field is performed in the form of production using only natural oil discharge energy or production by artificial oil extraction (e.g., gas lift extraction or pumping extraction) that is not associated with EOR
(described later). This is primary extraction.
At first, the oil extraction from an underground oil field is performed in the form of production using only natural oil discharge energy or production by artificial oil extraction (e.g., gas lift extraction or pumping extraction) that is not associated with EOR
(described later). This is primary extraction.
[0003]
Then, after the oil production by the primary extraction has decreased, it is attempted to increase the extraction efficiency by applying oil discharge energy to an oil layer artificially by pressure-injecting water or natural gas into the oil layer (water flooding or a gas injection method), which is secondary extraction.
Then, after the oil production by the primary extraction has decreased, it is attempted to increase the extraction efficiency by applying oil discharge energy to an oil layer artificially by pressure-injecting water or natural gas into the oil layer (water flooding or a gas injection method), which is secondary extraction.
[0004]
Furthermore, after the secondary extraction, an artificial enhanced oil recovery method is employed to extract oil remaining in the underground crude-oil-containing layer.
The enhanced oil recovery method is an extraction method that aims to attain higher replacement efficiency than the ordinary water flooding and gas injection method.
Examples of the enhanced oil recovery method are a micelle injection method in which crude-oil is recovered by forming microemulsion by adding surfactant to water and oil such as petroleum or heavy oil and then pressure-injecting the microemulsion into an underground crude-oil-containing layer and a polymer injection method in which the oil extraction efficiency is increased by increasing the viscosity of water by adding, to injection water, a water-soluble polymer substance such as polyacrylamide, poly(aJkyl acrylate), poly(alkyl methacrylate), polyacrylonitrile, or xanthan gum (see e.g., Patent document 1). Another example is a microorganism injection method which uses microorganisms. In the microorganism injection method, a microorganism is used which produces a metabolite such as a polymer, a surfactant, carbon dioxide, a methane gas, or an acid. It is expected to attain the same function as the above-described EOR
technology.
(see e.g., Patent document 2).
As described above, the conventional oil extraction methods are attempting to extract oil efficiently by making full use of various extraction techniques.
Furthermore, after the secondary extraction, an artificial enhanced oil recovery method is employed to extract oil remaining in the underground crude-oil-containing layer.
The enhanced oil recovery method is an extraction method that aims to attain higher replacement efficiency than the ordinary water flooding and gas injection method.
Examples of the enhanced oil recovery method are a micelle injection method in which crude-oil is recovered by forming microemulsion by adding surfactant to water and oil such as petroleum or heavy oil and then pressure-injecting the microemulsion into an underground crude-oil-containing layer and a polymer injection method in which the oil extraction efficiency is increased by increasing the viscosity of water by adding, to injection water, a water-soluble polymer substance such as polyacrylamide, poly(aJkyl acrylate), poly(alkyl methacrylate), polyacrylonitrile, or xanthan gum (see e.g., Patent document 1). Another example is a microorganism injection method which uses microorganisms. In the microorganism injection method, a microorganism is used which produces a metabolite such as a polymer, a surfactant, carbon dioxide, a methane gas, or an acid. It is expected to attain the same function as the above-described EOR
technology.
(see e.g., Patent document 2).
As described above, the conventional oil extraction methods are attempting to extract oil efficiently by making full use of various extraction techniques.
[0005]
Incidentally, as a typical example of a pump for extracting oil, a sucker rod pump 300 as shown in Fig. 3 is used. The sucker rod pump 300 extracts oil in such a manner that a rod 301 to whose tip a plunger (not shown) connected is lowered through a tubing and moved vertically by ground facilities and the movement of the rod is transmitted to the plunger. By virtue of its simplicity, the sucker rod pump 300 is used most widely in land oil fields (see e.g., Patent document 3).
A pump-off phenomenon may occur in the sucker rod pump. A pump-off control method is known in which occurrence of a pump-off phenomenon is detected under prescribed conditions and control is made (see e.g., Patent document 4).
Patent document 1: JP-A-11-236556 (pages 2-5) Patent document 2: JP-B-6-13699 (pages 2-9) Patent document 3: Japanese Patent No. 3,184,229 (pages 9-11 and Fig. 7) Patent document 4: WO 00/66892 (pages 9-17) DISCLOSURE OF THE INVENTION
Problem to Be Solved by the Invention [0006]
In recent years, it has come to be studied when to employ extraction methods of what principles in the development of an oilfield to work out a most economical plan as a whole. However, there may occur a case that a clear solution cannot be obtained, that is, a most appropriate production plan cannot always be obtained.
The present invention has been made in view of the above problem, and an object of the invention is to provide an oil extraction system and an oil extraction supervisory system capable of extracting oil efficiently by using a pump-off signal in secondary and tertiary extraction.
Means for Solving the Problem [0007]
To solve the above problem, the present invention have been made as follows.
According to the invention set forth in claim 1, an oil extraction system comprises: a sucker rod pump provided for a production well so as to pump up crude oil;
a signal detecting section for detecting a pump-off signal sent from the sucker rod pump;
and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, wherein the injection pump is operated based on the pump-off signal detected by the signal detecting section.
According to the invention set forth in claim 2, the signal detecting section is an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 3, the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 4, the pump-off signal is transmitted to an inverter for driving a power source of the injection pump.
According to the invention set forth in claim 5, the fluid is water, a gas, or a surfactant.
According to the invention set forth in claim 6, a microorganism is used in place of the fluid.
According to the invention set forth in claim 7, in an oil extraction system comprising a sucker rod pump provided for a production well so as to pump up crude oil; a signal detecting section for detecting a pump-off signal sent from the sucker rod pump; and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, an oil extraction method comprises:
detecting the pump-off signal with the signal detecting section; and operating the pressure injection pump based on the detected pump-off signal.
According to the invention set forth in claim 8, the signal detecting section is an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 9, the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 10, the pump-off signal is transmitted to an inverter for driving a power source of the injection pump.
According to the invention set forth in claim 11, the fluid is water, a gas, or a surfactant. 4 According to the invention set forth in claim 12, a microorganism is used in place of the fluid.
According to the invention set forth in claim 13, an oil extraction supervisory system comprises: a sucker rod pump provided for a production well so as to pump up crude oil; an inverter for driving the sucker rod pump; a remote supervisory unit for manipulating the inverter; a first radio communication section connected to the remote supervisory unit; a second radio communication section for performing a radio conununication with the radio communication section; and a computer connected to the radio communication section.
According to the invention set forth in claim 14, the command is transmitted at a prescribed cycle.
According to the invention set forth in claim 15, in an oil extraction supervisory system comprising a sucker rod pump provided for a production well so as to pump up crude oil; an inverter for driving the sucker rod pump; a remote supervisory unit for manipulating the inverter; a first radio communication section connected to the remote supervisory unit; a second radio communication section for performing a radio communication with the radio communication section; and a computer connected to the radio communication section, an oil extraction supervisory method comprises:
sending a certain command from the computer to the inverter via the second radio communication section; receiving, with the remote supervisory unit, the certain command via the first radio communication section; manipulating the inverter in response to the certain command; and transmitting the manipulation result to the computer via the first and second radio communication sections.
According to the invention set forth in claim 16, the certain conunand is transmitted at a prescribed cycle.
Advantages of the Invention [0008]
According to the inventions recited in claims 1 to 12, in secondary or tertiary extraction, the pump for pressure-injecting water, gas, or surfactant (fluid) or microorganisms and the sucker rod pump for extracting oil can be operated so as to cooperate with each other by using a pump-off detection signal of the inverter. This enables efficient oil extraction.
The inventions recited in claims 13 to 16 make it possible to perform oil production/maintenance management at a distant place.
BRIEF DESCRIPTION OF THE DRAWINGS
Incidentally, as a typical example of a pump for extracting oil, a sucker rod pump 300 as shown in Fig. 3 is used. The sucker rod pump 300 extracts oil in such a manner that a rod 301 to whose tip a plunger (not shown) connected is lowered through a tubing and moved vertically by ground facilities and the movement of the rod is transmitted to the plunger. By virtue of its simplicity, the sucker rod pump 300 is used most widely in land oil fields (see e.g., Patent document 3).
A pump-off phenomenon may occur in the sucker rod pump. A pump-off control method is known in which occurrence of a pump-off phenomenon is detected under prescribed conditions and control is made (see e.g., Patent document 4).
Patent document 1: JP-A-11-236556 (pages 2-5) Patent document 2: JP-B-6-13699 (pages 2-9) Patent document 3: Japanese Patent No. 3,184,229 (pages 9-11 and Fig. 7) Patent document 4: WO 00/66892 (pages 9-17) DISCLOSURE OF THE INVENTION
Problem to Be Solved by the Invention [0006]
In recent years, it has come to be studied when to employ extraction methods of what principles in the development of an oilfield to work out a most economical plan as a whole. However, there may occur a case that a clear solution cannot be obtained, that is, a most appropriate production plan cannot always be obtained.
The present invention has been made in view of the above problem, and an object of the invention is to provide an oil extraction system and an oil extraction supervisory system capable of extracting oil efficiently by using a pump-off signal in secondary and tertiary extraction.
Means for Solving the Problem [0007]
To solve the above problem, the present invention have been made as follows.
According to the invention set forth in claim 1, an oil extraction system comprises: a sucker rod pump provided for a production well so as to pump up crude oil;
a signal detecting section for detecting a pump-off signal sent from the sucker rod pump;
and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, wherein the injection pump is operated based on the pump-off signal detected by the signal detecting section.
According to the invention set forth in claim 2, the signal detecting section is an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 3, the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 4, the pump-off signal is transmitted to an inverter for driving a power source of the injection pump.
According to the invention set forth in claim 5, the fluid is water, a gas, or a surfactant.
According to the invention set forth in claim 6, a microorganism is used in place of the fluid.
According to the invention set forth in claim 7, in an oil extraction system comprising a sucker rod pump provided for a production well so as to pump up crude oil; a signal detecting section for detecting a pump-off signal sent from the sucker rod pump; and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, an oil extraction method comprises:
detecting the pump-off signal with the signal detecting section; and operating the pressure injection pump based on the detected pump-off signal.
According to the invention set forth in claim 8, the signal detecting section is an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 9, the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump.
According to the invention set forth in claim 10, the pump-off signal is transmitted to an inverter for driving a power source of the injection pump.
According to the invention set forth in claim 11, the fluid is water, a gas, or a surfactant. 4 According to the invention set forth in claim 12, a microorganism is used in place of the fluid.
According to the invention set forth in claim 13, an oil extraction supervisory system comprises: a sucker rod pump provided for a production well so as to pump up crude oil; an inverter for driving the sucker rod pump; a remote supervisory unit for manipulating the inverter; a first radio communication section connected to the remote supervisory unit; a second radio communication section for performing a radio conununication with the radio communication section; and a computer connected to the radio communication section.
According to the invention set forth in claim 14, the command is transmitted at a prescribed cycle.
According to the invention set forth in claim 15, in an oil extraction supervisory system comprising a sucker rod pump provided for a production well so as to pump up crude oil; an inverter for driving the sucker rod pump; a remote supervisory unit for manipulating the inverter; a first radio communication section connected to the remote supervisory unit; a second radio communication section for performing a radio communication with the radio communication section; and a computer connected to the radio communication section, an oil extraction supervisory method comprises:
sending a certain command from the computer to the inverter via the second radio communication section; receiving, with the remote supervisory unit, the certain command via the first radio communication section; manipulating the inverter in response to the certain command; and transmitting the manipulation result to the computer via the first and second radio communication sections.
According to the invention set forth in claim 16, the certain conunand is transmitted at a prescribed cycle.
Advantages of the Invention [0008]
According to the inventions recited in claims 1 to 12, in secondary or tertiary extraction, the pump for pressure-injecting water, gas, or surfactant (fluid) or microorganisms and the sucker rod pump for extracting oil can be operated so as to cooperate with each other by using a pump-off detection signal of the inverter. This enables efficient oil extraction.
The inventions recited in claims 13 to 16 make it possible to perform oil production/maintenance management at a distant place.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009]
Fig. 1 shows the configuration of an oil extraction system according to a first embodiment of the present invention.
Fig. 2 shows the configuration of an oil extraction supervisory system according to a second embodiment of the invention.
Fig. 3 illustrates a conventional sucker rod pump.
DESCRIPTION OF SYMBOLS
Fig. 1 shows the configuration of an oil extraction system according to a first embodiment of the present invention.
Fig. 2 shows the configuration of an oil extraction supervisory system according to a second embodiment of the invention.
Fig. 3 illustrates a conventional sucker rod pump.
DESCRIPTION OF SYMBOLS
[0010]
1: Underground crude-oil-containing layer (oil layer) 2: Production well 3: Injection well 10: Sucker rod pump 11: Motor 12: First inverter 20: Injection pump 21: Motor 22: Second inverter 23: Signal transmission section 51: Communication interface 52: Remote supervisory unit 53: Radio communication section 60: Central supervisory system 61: Radio communication section 62: Communication interface 63: Computer 300: Sucker rod pump 301: Rod BEST MODE FOR CARRYING OUT THE INVENTION
[0011]
Embodiments of the present invention will be hereinafter described with reference to the drawings.
Embodiment 1 [0012]
Fig. 1 shows the configuration of an oil extraction system according to the invention. The following description will be made with an assumption that oil is extracted by water flooding. However, the invention can be applied to any injection method in the case of secondary or tertiary extraction.
In FIG. 1, reference numeral 1 denotes an underground crude-oil-containing layer (oil layer), numeral 2 denotes a production well to be a well for extracting oil, and numeral 3 denotes an injection well for injecting water.
Reference numeral 10 denotes a sucker rod pump for pumping up crude oil and numeral 11 denotes a motor serving as a power source of the sucker rod pump 10.
Reference numeral 12 denotes a first inverter for driving the motor 11. The first inverter 12 can detect a pump-off signal according to a known technique.
Reference numeral 20 denotes an injection pump for injecting water, numeral 21 denotes a motor serving as a power source of the injection pump 20, and numeral 22 denotes a second inverter for driving the motor 21. Reference numeral 23 denotes a signal transmission section for transmitting a pump-off signal from the first inverter 12 to the second inverter 22 and is composed of a transmitter, a signal line, and a receiver (not shown).
1: Underground crude-oil-containing layer (oil layer) 2: Production well 3: Injection well 10: Sucker rod pump 11: Motor 12: First inverter 20: Injection pump 21: Motor 22: Second inverter 23: Signal transmission section 51: Communication interface 52: Remote supervisory unit 53: Radio communication section 60: Central supervisory system 61: Radio communication section 62: Communication interface 63: Computer 300: Sucker rod pump 301: Rod BEST MODE FOR CARRYING OUT THE INVENTION
[0011]
Embodiments of the present invention will be hereinafter described with reference to the drawings.
Embodiment 1 [0012]
Fig. 1 shows the configuration of an oil extraction system according to the invention. The following description will be made with an assumption that oil is extracted by water flooding. However, the invention can be applied to any injection method in the case of secondary or tertiary extraction.
In FIG. 1, reference numeral 1 denotes an underground crude-oil-containing layer (oil layer), numeral 2 denotes a production well to be a well for extracting oil, and numeral 3 denotes an injection well for injecting water.
Reference numeral 10 denotes a sucker rod pump for pumping up crude oil and numeral 11 denotes a motor serving as a power source of the sucker rod pump 10.
Reference numeral 12 denotes a first inverter for driving the motor 11. The first inverter 12 can detect a pump-off signal according to a known technique.
Reference numeral 20 denotes an injection pump for injecting water, numeral 21 denotes a motor serving as a power source of the injection pump 20, and numeral 22 denotes a second inverter for driving the motor 21. Reference numeral 23 denotes a signal transmission section for transmitting a pump-off signal from the first inverter 12 to the second inverter 22 and is composed of a transmitter, a signal line, and a receiver (not shown).
[0013]
The operation of the above-configured oil extraction system according to the invention will be described below.
As the sucker rod pump 10 continues to pump up crude oil, the oil layer pressure gradually decreases, and thus the oil extraction efficiency gradually lowers. As the oil layer pressure decreases, a pump-off-phenomenon becomes more prone to occur.
When a pump-off signal is detected by the first inverter 12, the signal is transmitted to the second inverter 22 via the signal transmission section 23.
That is, the first inverter serves as a pump-off signal detecting section. When receiving the pump-off signal, the second inverter 22 starts pressure-injecting water (fluid).
As a result, the oil layer pressure is recovered and stable oil extraction is enabled in the production well.
The operation of the above-configured oil extraction system according to the invention will be described below.
As the sucker rod pump 10 continues to pump up crude oil, the oil layer pressure gradually decreases, and thus the oil extraction efficiency gradually lowers. As the oil layer pressure decreases, a pump-off-phenomenon becomes more prone to occur.
When a pump-off signal is detected by the first inverter 12, the signal is transmitted to the second inverter 22 via the signal transmission section 23.
That is, the first inverter serves as a pump-off signal detecting section. When receiving the pump-off signal, the second inverter 22 starts pressure-injecting water (fluid).
As a result, the oil layer pressure is recovered and stable oil extraction is enabled in the production well.
[0014]
Although in this embodiment the first inverter detects a pump-off phenomenon, a superior controller (not shown) may detect the pump-off phenomenon or a sensor provided for the sucker rod pump may detect the pump-off phenomenon directly.
Although a pump-off signal detected by the first inverter is transmitted to the second inverter 22 directly, there is no problem if a condition is met that the second inverter can be operated based on the pump-off signal. That is, there is no problem if the pump-off phenomenon is detected by a certain means and then pressure injection of water is performed based on the detection result.
It is not indispensable to start operating the second inverter immediately after detecting the pump-off phenomenon. Operation of the second inverter may be started when the pump-off phenomenon has been detected a prescribed number of times or when the number of times of detection per unit time has exceeded a prescribed value.
Although in this embodiment the first inverter detects a pump-off phenomenon, a superior controller (not shown) may detect the pump-off phenomenon or a sensor provided for the sucker rod pump may detect the pump-off phenomenon directly.
Although a pump-off signal detected by the first inverter is transmitted to the second inverter 22 directly, there is no problem if a condition is met that the second inverter can be operated based on the pump-off signal. That is, there is no problem if the pump-off phenomenon is detected by a certain means and then pressure injection of water is performed based on the detection result.
It is not indispensable to start operating the second inverter immediately after detecting the pump-off phenomenon. Operation of the second inverter may be started when the pump-off phenomenon has been detected a prescribed number of times or when the number of times of detection per unit time has exceeded a prescribed value.
[0015]
As described above, in secondary or tertiary extraction, the pump for pressure-injecting water, gas, or surfactant (fluid) or microorganisms and the sucker rod pump for extracting oil can be operated so as to cooperate with each other by using a pump-off detection signal of the inverter. This enables efficient oil extraction.
Embodiment 2 [0016]
Fig. 2 shows the configuration of an oil extraction supervisory system according to a second embodiment. A component having the same component in the first embodiment is given the same reference numeral and will not be described below in detail.
In the figure, reference numeral 51 denotes a communication interface, which is a communication interface card that allows the first inverter 12 to exchange data with a remote supervisory unit (described later). Reference numeral 52 denotes the remote supervisory unit which receives a command from a central supervisory system and manipulates the inverter in response to the content of the command. Reference numeral 53 denotes a radio communication section which serves to send and receive a radio signal.
Reference numeral 60 denotes the central supervisory system which is composed of a radio communication section 61, a communication interface 62, and a computer 63.
As described above, in secondary or tertiary extraction, the pump for pressure-injecting water, gas, or surfactant (fluid) or microorganisms and the sucker rod pump for extracting oil can be operated so as to cooperate with each other by using a pump-off detection signal of the inverter. This enables efficient oil extraction.
Embodiment 2 [0016]
Fig. 2 shows the configuration of an oil extraction supervisory system according to a second embodiment. A component having the same component in the first embodiment is given the same reference numeral and will not be described below in detail.
In the figure, reference numeral 51 denotes a communication interface, which is a communication interface card that allows the first inverter 12 to exchange data with a remote supervisory unit (described later). Reference numeral 52 denotes the remote supervisory unit which receives a command from a central supervisory system and manipulates the inverter in response to the content of the command. Reference numeral 53 denotes a radio communication section which serves to send and receive a radio signal.
Reference numeral 60 denotes the central supervisory system which is composed of a radio communication section 61, a communication interface 62, and a computer 63.
[0017]
With the above configuration, when a certain command is sent from the computer 63, command data is transmitted to the remote supervisory unit 52 via the radio communication sections 61 and 53.
The remote supervisory unit 52 manipulates the inverter in response to the command and returns result data to the computer 63.
For example, if the computer 63 sends out a rotating speed read command, the remote supervisory unit 52 reads out rotating speed information that is managed by the inverter and returns it to the computer 63.
If commands are transmitted periodically, result data are acquired periodically and hence data monitoring is enabled.
Accordingly, the operation state of the inverter is checked regularly by the computer 63, so that it is made possible to supervise and manage the oil extraction amount/variation of the entire oil field, the oil extraction amount/variation, operation state, maintainability, availability, etc. of each sucker rod pump.
With the above configuration, when a certain command is sent from the computer 63, command data is transmitted to the remote supervisory unit 52 via the radio communication sections 61 and 53.
The remote supervisory unit 52 manipulates the inverter in response to the command and returns result data to the computer 63.
For example, if the computer 63 sends out a rotating speed read command, the remote supervisory unit 52 reads out rotating speed information that is managed by the inverter and returns it to the computer 63.
If commands are transmitted periodically, result data are acquired periodically and hence data monitoring is enabled.
Accordingly, the operation state of the inverter is checked regularly by the computer 63, so that it is made possible to supervise and manage the oil extraction amount/variation of the entire oil field, the oil extraction amount/variation, operation state, maintainability, availability, etc. of each sucker rod pump.
[0018]
Although in this embodiment the communication interface is provided inside the first inverter, it may be provided outside the first inverter.
Although in this embodiment the communication interface is provided inside the first inverter, it may be provided outside the first inverter.
[0019]
As described above, the supervision using radio communication makes it possible to perform oil production/maintenance management at a distant place.
As described above, the supervision using radio communication makes it possible to perform oil production/maintenance management at a distant place.
Claims (16)
1. An oil extraction system comprising:
a sucker rod pump provided for a production well so as to pump up crude oil;
a signal detecting section for detecting a pump-off signal sent from the sucker rod pump; and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, wherein the injection pump is operated based on the pump-off signal detected by the signal detecting section.
a sucker rod pump provided for a production well so as to pump up crude oil;
a signal detecting section for detecting a pump-off signal sent from the sucker rod pump; and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, wherein the injection pump is operated based on the pump-off signal detected by the signal detecting section.
2. The oil extraction system according to claim 1, wherein the signal detecting section is an inverter for driving a power source of the sucker rod pump.
3. The oil extraction system according to claim 1, wherein the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump.
4. The oil extraction system according to claim 1, wherein the pump-off signal is transmitted to an inverter for driving a power source of the injection pump.
5. The oil extraction system according to claim 1, wherein the fluid is water, a gas, or a surfactant.
6. The oil extraction system according to claim 1, wherein a microorganism is used in place of the fluid.
7. In an oil extraction system comprising a sucker rod pump provided for a production well so as to pump up crude oil; a signal detecting section for detecting a pump-off signal sent from the sucker rod pump; and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, an oil extraction method comprising:
detecting the pump-off signal with the signal detecting section; and operating the pressure injection pump based on the detected pump-off signal.
detecting the pump-off signal with the signal detecting section; and operating the pressure injection pump based on the detected pump-off signal.
8. The oil extraction system according to claim 7, wherein the signal detecting section is an inverter for driving a power source of the sucker rod pump.
9. The oil extraction system according to claim 7, wherein the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump.
10. The oil extraction system according to claim 7, wherein the pump-off signal is transmitted to an inverter for driving a power source of the injection pump.
11. The oil extraction system according to claim 7, wherein the fluid is water, a gas, or a surfactant.
12. The oil extraction system according to claim 7, wherein a microorganism is used in place of the fluid.
13 13. An oil extraction supervisory system, comprising:
a sucker rod pump provided for a production well so as to pump up crude oil;
an inverter for driving the sucker rod pump;
a remote supervisory unit for manipulating the inverter;
a first radio communication section connected to the remote supervisory unit;
a second radio communication section for performing a radio communication with the radio communication section; and a computer connected to the radio communication section.
a sucker rod pump provided for a production well so as to pump up crude oil;
an inverter for driving the sucker rod pump;
a remote supervisory unit for manipulating the inverter;
a first radio communication section connected to the remote supervisory unit;
a second radio communication section for performing a radio communication with the radio communication section; and a computer connected to the radio communication section.
14. The oil extraction supervisory system according to claim 13, wherein the command is transmitted at a prescribed cycle.
15. In an oil extraction supervisory system comprising a sucker rod pump provided for a production well so as to pump up crude oil; an inverter for driving the sucker rod pump; a remote supervisory unit for manipulating the inverter; a first radio communication section connected to the remote supervisory unit; a second radio communication section for performing a radio communication with the radio communication section; and a computer connected to the radio communication section, an oil extraction supervisory method comprising:
sending a certain command from the computer to the inverter via the second radio communication section;
receiving, with the remote supervisory unit, the certain command via the first radio communication section;
manipulating the inverter in response to the certain command; and transmitting the manipulation result to the computer via the first and second radio communication sections.
sending a certain command from the computer to the inverter via the second radio communication section;
receiving, with the remote supervisory unit, the certain command via the first radio communication section;
manipulating the inverter in response to the certain command; and transmitting the manipulation result to the computer via the first and second radio communication sections.
16. The oil extraction supervisory method, wherein the certain command is transmitted at a prescribed cycle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006293169 | 2006-10-27 | ||
| JP2006-293169 | 2006-10-27 | ||
| PCT/JP2007/070224 WO2008050645A1 (en) | 2006-10-27 | 2007-10-17 | Oil extracting system, and oil extraction monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2667535A1 true CA2667535A1 (en) | 2008-05-02 |
Family
ID=39324443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002667535A Abandoned CA2667535A1 (en) | 2006-10-27 | 2007-10-17 | Oil extraction system and oil extraction supervisory system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20100051268A1 (en) |
| JP (1) | JPWO2008050645A1 (en) |
| CN (1) | CN101169033A (en) |
| CA (1) | CA2667535A1 (en) |
| WO (1) | WO2008050645A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2441143C1 (en) * | 2010-05-19 | 2012-01-27 | Общество с ограниченной ответственностью "Нефтяная технологическая компания" НЕТЕК | Method of increasing oil reservoir recovery and device to this end |
| US9284480B2 (en) | 2011-10-04 | 2016-03-15 | Saudi Arabian Oil Company | Polymer-enhanced surfactant flooding for permeable carbonates |
| CA2912115C (en) * | 2013-12-26 | 2017-02-21 | Han's Laser Technology Industry Group Co., Ltd. | Oil-submersible linear motor oil extraction system |
| CN105629906A (en) * | 2014-10-31 | 2016-06-01 | 上海工程技术大学 | Data monitoring system for deep-sea oil extraction device simulator |
| CN112302593B (en) * | 2019-08-01 | 2022-11-01 | 中国石油天然气股份有限公司 | Water polymer flooding injection allocation device and water polymer flooding integrated intelligent separate injection system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1173771A (en) * | 1980-05-21 | 1984-09-04 | Roger E. Cripps | Fluid displacement with heteropolysaccharide solutions, and the microbial production of heteropolysaccharides |
| JPS63112592U (en) * | 1987-01-16 | 1988-07-20 | ||
| US4854164A (en) * | 1988-05-09 | 1989-08-08 | N/Cor Inc. | Rod pump optimization system |
| US5281100A (en) * | 1992-04-13 | 1994-01-25 | A.M.C. Technology, Inc. | Well pump control system |
| JP3224702B2 (en) * | 1994-12-05 | 2001-11-05 | 三菱重工業株式会社 | Oil extraction method from oil field |
| US5823262A (en) * | 1996-04-10 | 1998-10-20 | Micro Motion, Inc. | Coriolis pump-off controller |
| JPH11236556A (en) * | 1998-02-24 | 1999-08-31 | Hakuto Co Ltd | Injection fluid composition for forced petroleum recovery and petroleum recovery method |
| US6599095B1 (en) * | 1999-04-28 | 2003-07-29 | Kabushiki Kaisha Yaskawa Denki | Pump-off control method of pump jack |
| US6857474B2 (en) * | 2001-10-02 | 2005-02-22 | Lufkin Industries, Inc. | Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
-
2006
- 2006-12-15 CN CNA2006101674153A patent/CN101169033A/en active Pending
-
2007
- 2007-10-17 WO PCT/JP2007/070224 patent/WO2008050645A1/en active Application Filing
- 2007-10-17 US US12/447,068 patent/US20100051268A1/en not_active Abandoned
- 2007-10-17 JP JP2008540950A patent/JPWO2008050645A1/en not_active Abandoned
- 2007-10-17 CA CA002667535A patent/CA2667535A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2008050645A1 (en) | 2010-02-25 |
| WO2008050645A1 (en) | 2008-05-02 |
| US20100051268A1 (en) | 2010-03-04 |
| CN101169033A (en) | 2008-04-30 |
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