WO2008050645A1

WO2008050645A1 - Oil extracting system, and oil extraction monitoring system

Info

Publication number: WO2008050645A1
Application number: PCT/JP2007/070224
Authority: WO
Inventors: Tatsumi Tsuruta; Koji Kawamoto; Takayuki Imanaka
Original assignee: Kabushiki Kaisha Yaskawa Denki
Priority date: 2006-10-27
Filing date: 2007-10-17
Publication date: 2008-05-02
Also published as: JPWO2008050645A1; CN101169033A; CA2667535A1; US20100051268A1

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

Specification

Oil extraction system and oil extraction monitoring system

Technical field

The present invention relates to an oil collection system for forcibly recovering oil and an oil collection monitoring system for monitoring the oil collection system.

Background art

[0002] When oil is extracted from underground oilfield power,

Production will be performed by artificial oiling (gas' lift oiling, pump oiling, etc.) without EOR, which will be described later (primary collection).

[0003] After that, after the production due to the primary recovery declines, water and natural gas are injected into the oil reservoir (water flooding, gas injection) to provide artificial oil drainage energy and reduce the yield. Increase (secondary collection).

[0004] Furthermore, after the second collection, an artificial oil enhanced recovery method has been used to extract the oil remaining in the underground crude oil-containing layer. The enhanced recovery method is a collection method for the purpose of replacement efficiency, which is higher than that obtained by the usual water flooding method and the gas injection method. For enhanced recovery, microemulsions are made by adding a surfactant to water and oils such as petroleum and heavy oil, and this is injected into an underground crude oil-containing layer to collect crude oil. Polyacrylamide, polyalkyl Polymer attack methods are used to increase the viscosity of water and improve the oil collection rate by adding water-soluble polymer substances such as attalylate, polyalkylmetatalylate, polyatarylnitrile, and xanthan gum to the injected water. (For example, see Patent Document 1)). A microbial attack using microorganisms is also used. Microbial attack is a method that expects the same function as the EOR technology in the underground crude oil containing layer using microorganisms that produce metabolites such as polymers, surfactants, carbon dioxide, methane gas, and acids ( For example, see Patent Document 2).

In this way, the conventional oil collection method makes full use of the extraction method to efficiently collect oil. [0005] By the way, the pump for extracting oil has a sucker rod as shown in FIG. 'Pong 300 force S is used. The soccer 'rod' pump 300 is connected to a plunger (not shown) at the tip of the rod 301 and lowered into the tubing. The rod is moved up and down by the ground equipment and the movement is transmitted to the plunger to collect oil. Because of its simplicity, it is most widely used in onshore oil fields! (See, for example, Patent Document 3).

A sucker rod pump may be pumped off. As a control method, a technique for detecting and controlling the pump off occurrence under a predetermined condition is known (for example, see Patent Document 4).

Patent Document 1: JP-A-11 236556 (Page 2-5)

Patent Document 2: Japanese Patent Publication No. 6 13699 (Page 29)

Patent Document 3: Japanese Patent No. 3184229 (Page 9-17, Fig. 7)

Patent Document 4: WO00 / 66892 (Pages 9-17)

Disclosure of the invention

Problems to be solved by the invention

[0006] In recent years, during oil field development, it has been considered whether or not the principle of sampling method can be applied! / If it is applied at one time point, the most comprehensive production plan can be obtained. . However, there are cases where a clear solution cannot be obtained, and an optimal production plan has not always been obtained.

The present invention has been made in view of such problems, and an oil collection system and an oil collection monitoring system capable of performing efficient oil collection by using a pump-off signal in secondary and tertiary collection. The purpose is to provide.

Means for solving the problem

[0007] In order to solve the above problems, the present invention is configured as follows.

The invention according to claim 1 is provided in a production well and a soccer 'rod' pump that pumps crude oil, a signal detection unit that detects a pump-off signal of the sucker'rod 'pump, and a press well. And a press-fitting pump for press-fitting a fluid used for secondary collection or tertiary collection, and the press-fitting pump is controlled based on a pump-off signal detected by the signal detection unit. It is characterized by driving.

In addition, in the invention according to claim 2, the signal detection unit is configured such that the soccer 'rod' pump It is an inverter which drives the motive power source.

The invention described in claim 3 is characterized in that the signal detection unit is a host controller of an inverter that drives a power source of the soccer 'rod' pump. In the invention, the pump-off signal is transmitted to an inverter that drives a power source of the press-fitting pump.

The invention according to claim 5 is characterized in that the fluid is water, gas, or a surfactant.

The invention described in claim 6 is characterized in that a microorganism is used instead of the fluid.

The invention according to claim 7 is provided in a press-fit well, a soccer-rod 'pump that is provided in a production well and pumps up crude oil, a signal detection unit that detects a pump-off signal of the soccer' rod 'pump. And a press-fitting pump that press-fits a fluid used for secondary collection or tertiary collection, and the signal detector detects the pump-off signal and based on the detected pump-off signal. Then, the press-fitting pump is operated.

The invention described in claim 8 is characterized in that the signal detection unit is an inverter that drives a power source of the soccer “rod” pump.

The invention according to claim 9 is characterized in that the signal detection unit is a host controller of an inverter that drives a power source of the soccer 'rod' pump. The described invention is characterized in that the pump-off signal is transmitted to an inverter that drives a power source of the press-fitting pump.

The invention according to claim 11 is characterized in that the fluid is water, gas or a surfactant.

The invention described in claim 12 is characterized in that a microorganism is used instead of the fluid.

Furthermore, the invention of claim 13 is a soccer game that is provided in a production well and pumps up crude oil. A rod, a pump, an inverter for driving the soccer “rod” pump, a remote monitoring unit for operating the inverter, a first wireless communication unit connected to the remote unit, and a wireless communication with the wireless communication unit A second wireless communication unit for communicating, and a computer connected to the wireless communication unit.

The invention according to claim 14 is characterized in that the command is transmitted in a predetermined cycle.

In addition, the invention of claim 15 is a soccer game that is installed in a production well and pumps up crude oil.

A rod, a pump, an inverter for driving the soccer “rod” pump, a remote monitoring unit for operating the inverter, a first wireless communication unit connected to the remote unit, and a wireless communication with the wireless communication unit In an oil collection monitoring system comprising: a second wireless communication unit for communicating; and a computer connected to the wireless communication unit, the inverter is connected to the inverter from the computer via the second wireless communication unit. The remote monitoring unit receives the predetermined command via the first wireless communication unit, operates the inverter in response to the predetermined command, and sends the result of the operation to the first and It transmits to the said computer via a 2nd wireless communication part, It is characterized by the above-mentioned.

The invention according to claim 16 is characterized in that the command is transmitted in a predetermined cycle.

The invention's effect

[0008] According to the invention described in claims 1 to 12, in the secondary and tertiary collection, the pump for press-fitting water, gas, surfactant (fluid) or microorganisms, and the soccer rod pump for oil collection Can be operated in a coordinated manner using the inverter pump-off detection signal, enabling efficient oil collection.

In addition, according to the inventions of claims 13 to 16, since monitoring is performed by wireless communication, it is possible to produce and maintain crude oil in a remote area.

Brief Description of Drawings

FIG. 1 is a configuration diagram of an oil collection system showing a first embodiment of the present invention.

FIG. 2 is a block diagram of an oil collection monitoring system showing a second embodiment of the present invention.

[Figure 3] Illustration of conventional soccer 'rod pump Explanation of symbols

[0010] 1 Underground crude oil content layer (oil reservoir)

2 Production well

3 Press well

10 Soccer 'rod' pump

11 Motor

12 1st inverter

20 Press-in pump

21 Motor

22 Second inverter

23 Signal transmission section

51 Communication interface

52 Remote monitoring unit

53 Wireless communication unit

60 Central monitoring system

61 Wireless communication unit

62 Communication interface

63 computer

300 football 'rod' pump

301 rod,

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Example 1

FIG. 1 is a configuration diagram of an oil collection system of the present invention. In the following, oil extraction can be applied to any of the flooding methods as long as it is based on secondary and tertiary harvesting.

In the figure, 1 is an underground crude oil containing layer (oil reservoir). 2 is a production well which is a well for collecting oil. 3 is an injection well for injecting water. 10 is a sucker that pumps crude oil. 11 is a sucker rod. Reference numeral 12 denotes a first inverter that drives the motor 11. The first inverter 12 can detect a pump-off signal by a known technique.

20 is a press-fitting pump for injecting water. Reference numeral 21 denotes a motor which is a power source of the press-fitting pump 20. Reference numeral 22 denotes a second inverter that drives the motor 21. Reference numeral 23 denotes a signal transmission unit for transmitting a pump-off signal to the first inverter 12 and the second inverter 22, and is composed of a transmitter, a signal line, and a receiver (not shown).

[0013] The operation of the oil collection system of the present invention under the above configuration will be described below.

If you continue to pump up crude oil with the soccer rod 'pump ₁₀ , the oil reservoir pressure will gradually drop.

The oil collection efficiency gradually decreases. When the oil reservoir pressure decreases, the pump off is likely to occur.

Here, when the pump-off signal is detected in the first inverter 12, this signal is transmitted to the second inverter 22 via the signal transmission unit 23. In other words, the first inverter is a pump-off signal detector. When this pump-off signal is transmitted, the second inverter 22 starts operation and press-fits water (fluid).

As a result, the oil reservoir pressure is restored, so that stable oil collection at the production well becomes possible.

[0014] In this embodiment, the force S detected by the first inverter to detect pump-off, V not shown, may be detected by the host controller, or may be detected by a sensor provided on the soccer 'rod' pump. It may be detected directly. Further, the pump-off signal of the first inverter only needs to be able to operate the second inverter based on the force S directly transmitted to the second inverter 22 and the pump-off signal. In other words, the pump off may be detected by some means, and water may be injected based on this.

Furthermore, even if the second inverter is not started immediately after the pump-off is detected, the operation is started when the number of detections per unit time that can be started after detecting the predetermined number of times exceeds the predetermined value. You may do it.

[0015] As described above, in the secondary and tertiary collection, the pump that press-fits water, gas, surfactant (fluid) or micro-organisms and the soccer rod that pumps oil are pumped off the inverter. Since cooperative operation can be performed using the detection signal, efficient oil collection is possible.

Example 2

FIG. 2 is a configuration diagram showing an oil collection monitoring system of the second embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

In the figure, 51 is a communication interface, which is a communication interface card for the first inverter 12 to transmit and receive data to and from a remote monitoring unit to be described later. 52 is a remote monitoring unit that receives a command from the central monitoring system and operates the inverter according to the command content. 53 is a wireless communication unit for transmitting and receiving wireless signals.

A central monitoring system 60 includes a wireless communication unit 61, a communication interface 62, and a computer 63.

When a predetermined command is transmitted from the computer 63 under the above configuration, the command data is transmitted to the remote monitoring unit 52 via the wireless communication units 61 and 53.

The remote monitoring unit 52 operates the inverter according to the command and returns the result data to the computer 63.

For example, when a rotational speed reading command is transmitted from the computer 63, the remote monitoring unit reads information on the rotational speed managed by the inverter and returns it to the computer 63.

If the command is sent periodically, the resulting data can be obtained periodically, allowing data monitoring.

As described above, the operating status of the inverter is periodically checked by the computer 63, and the oil volume / trends of the entire oil field, the oil volume / trends of each soccer 'rod' pump, operating status, maintainability, Ability to monitor and manage availability, etc.

[0018] In this embodiment, the communication interface is provided inside the first inverter, but may be provided outside.

[0019] As described above, since monitoring is performed by wireless communication, it is possible to use the power S for producing and maintaining crude oil at a remote location.

Claims

The scope of the claims

[1] A soccer 'rod' pump that pumps crude oil from the production well, a signal detector that detects the pump off signal of the soccer 'rod' pump, and a secondary well that is installed in the injection well. An oil collection system comprising a press-fitting pump for press-fitting a fluid used for the first or third collection,

An oil collection system that operates the press-fitting pump based on a pump-off signal detected by the signal detector.

2. The oil collection system according to claim 1, wherein the signal detection unit is an inverter that drives a power source of the soccer “rod” pump.

[3] The oil collection system according to claim 1, wherein the signal detection unit is a host controller of an inverter that drives a power source of the soccer “rod” pump.

4. The oil collection system according to claim 1, wherein the pump-off signal is transmitted to an inverter that drives a power source of the press-fitting pump.

5. The oil collection system according to claim 1, wherein the fluid is water, gas, or a surfactant.

6. The oil collection system according to claim 1, wherein a microorganism is used instead of the fluid.

[7] A soccer 'rod' pump that is installed in the production well and pumps crude oil, a signal detector that detects the pump off signal of the soccer 'rod' pump, and a secondary well that is installed in the injection well. An oil collection system comprising a press-fitting pump for press-fitting a fluid used for the first or third collection,

The signal detector detects the pump-off signal;

An oil collection method comprising operating the press-fitting pump based on the detected pump-off signal.

8. The oil collection system according to claim 7, wherein the signal detection unit is an inverter that drives a power source of the soccer “rod” pump.

9. The oil collection system according to claim 7, wherein the signal detection unit is a host controller of an inverter that drives a power source of the soccer “rod” pump.

[10] The pump-off signal is transmitted to an inverter that drives a power source of the press-fit pump. 8. The oil collection system according to claim 7, wherein

11. The oil collection system according to claim 7, wherein the fluid is water, gas, or a surfactant.

12. The oil collection system according to claim 7, wherein a microorganism is used instead of the fluid.

[13] A soccer 'rod' that is installed in the production well to pump crude oil, a pump,

An inverter that drives the soccer 'rod' pump;

A remote monitoring unit for operating the inverter;

A first wireless communication unit connected to the remote unit;

A second wireless communication unit for wireless communication with the wireless communication unit;

An oil collection monitoring system comprising: a computer connected to the wireless communication unit.

14. The oil collection monitoring system according to claim 13, wherein the command is transmitted at a predetermined cycle.

[15] Soccer 'rod', pump installed in production well, pump, soccer 'rod' pump inverter, remote monitoring unit for operating the inverter, connected to the remote unit An oil collection monitoring system comprising: a first wireless communication unit that is connected; a second wireless communication unit for wireless communication with the wireless communication unit; and a computer connected to the wireless communication unit.

A predetermined command is transmitted from the computer to the inverter via the second wireless communication unit,

The remote monitoring unit receives the predetermined command via the first wireless communication unit, operates the inverter according to the predetermined command,

The oil collection monitoring method, wherein the result of the operation is transmitted to the computer via the first and second wireless communication units.

16. The oil collection monitoring method according to claim 15, wherein the command is transmitted at a predetermined cycle.