CN118148576A - Electrohydraulic composite intelligent oil extraction pipe column and process method - Google Patents
Electrohydraulic composite intelligent oil extraction pipe column and process method Download PDFInfo
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- 239000003921 oil Substances 0.000 claims abstract description 98
- 238000004519 manufacturing process Methods 0.000 claims abstract description 40
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims 3
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Abstract
The invention provides an electrohydraulic composite intelligent oil production string and a process method, wherein the string comprises an oil cavity, an electrohydraulic composite pressurizing device, a setting and unsetting control device, a cable, a hydraulic control pipeline and a hydraulic control packer, when the string is set, the cable transmits a setting signal to the setting and unsetting control device, the setting and unsetting control device is in a setting state, hydraulic oil enters the electrohydraulic composite pressurizing device from the oil cavity through the hydraulic control pipeline to pressurize, hydraulic oil enters the hydraulic control packer through the hydraulic control pipeline after being pressurized, when the setting and unsetting are completed, the cable transmits an unsetting signal to the setting and unsetting control device, the setting and unsetting control device is in an unsetting state, and hydraulic oil returns to the oil cavity through the hydraulic control pipeline and the setting and unsetting control device by the hydraulic control packer, so that the unsetting is completed. The electrohydraulic composite intelligent oil production pipe column and the process method have the advantages of quick response, simple structure, real-time monitoring of the state of the packer and dynamic pressure compensation points, reduction of the length of the hydraulic control pipeline and compensation of the disadvantage of the unpacking speed.
Description
Technical Field
The invention relates to the technical field of oilfield production tubing strings, in particular to an electrohydraulic composite intelligent oil production tubing string and a process method.
Background
As the development of oil fields goes into the middle and later stages, the heterogeneity among layers is increasingly serious, and the requirements of layered exploitation and real-time dynamic adjustment are further improved. And with the rapid development of digitization and intellectualization of oil fields, the intelligent layered oil extraction technology will be a necessary trend in the future. At present, the intelligent layered oil extraction technology mainly comprises two types: a cabled intelligent layered oil extraction technology and a cableless intelligent layered oil extraction technology. The intelligent layering oil extraction technology without cables transmits signals through pressure waves, and is limited by the battery capacity and service life of downhole tools, so that the service life of a pipe column is short. The cable intelligent layered oil extraction technology adopts a cable to transmit signals, the signal transmission mode is simpler, but in the aspect of layered packing, a conventional compression packer or an electric packer is generally adopted, when the conventional packer is set, the conventional packer is required to be pressed by other equipment such as a tank car or a pump truck, the electric packer is not required to be fast in response by the cooperation of other equipment, but the motor driving power is insufficient, and the setting pressure difference is small. The hydraulic control packer controlled by the hydraulic pipeline is used as a commonly used packer at sea, and has the advantages of simple structure, capability of monitoring the state of the packer and dynamically compensating pressure in real time, but low deblocking speed because the friction of the pipeline from underground to ground needs to be overcome during deblocking.
In application number: in the Chinese patent application of CN201611227503.8, an intelligent layered oil production pipe column of a highly deviated well and an operation method thereof are related, wherein the layered oil production pipe column comprises a pipe with holes and a round plug, cable positioning seals are arranged between the pipe with holes and the round plug, and a plurality of layered production allocation devices and at least one cable insertion seal are arranged between the pipe with holes and the round plug; each layered production allocation device is connected to a ground controller connected with an upper computer through a steel armour cable; the layered production allocation device corresponds to each oil layer respectively, and sealing among different layers is realized through the cable passing positioning sealing and the cable passing inserting sealing; the operation method comprises the following steps: (1) pigging; (2) The joint debugging test of the layered production allocation device is normal, and a pipe column and a steel armour cable are put in; (3) checking sealing of the pipe column; (4) starting pump production; (5) fixed-point acidification. The method can realize online stepless regulation and control of layered oil extraction of the highly deviated well, and can implement fixed-point acidification according to production requirements. The patent adopts a mode of closely inserting and sealing the cylinder to realize layered sealing, has no unsealing function, and is easy to scrape when the pipe column is pulled down, so that the service life is reduced.
In application number: in the chinese patent application CN202111425182.3, a plurality of intelligent oil extraction devices are connected by cables to form stable data communication with an underground central controller, the underground central controller can make a choice according to parameters such as temperature, pressure and flow provided by each layer of intelligent oil extraction devices, and send out instructions to adjust the opening of the oil nozzle of the intelligent oil extraction devices; under the condition of short cable length, the opening degree of the oil nozzle is automatically regulated underground, and intelligent layered oil extraction is realized. The oil well pump is separated from the intelligent pipe column, so that the cable length can be reduced to a certain extent. The packer is not specifically described, and a conventional packer is used.
In application number: in CN 201910044010.8's chinese patent application, relate to a horizontal well intelligence layering water injection and layering oil recovery tubular column and technological method, form annular space water injection clearance between tubular column and the oil pipe, the oil pipe inboard inwards is fixed with oil-well pump, the switch and the bottom valve that are used for controlling oil pipe break-make in proper order, bottom valve threaded connection is at the bottom of oil pipe, still is provided with multiunit packer and the intelligent switch ware that matches with every packer on the oil pipe between switch and the bottom valve, switch and the ground controller electrical signal connection who is located ground. The one-pass pipe column realizes the sectional water injection and the sectional oil extraction, the cable control switch is turned on or off, the intelligent conversion between the layered water injection and the layered oil extraction is realized, the horizontal well throughput multi-section separate injection is satisfied, and the method has important significance for the ultra-low permeability compact oil development. The patent is mainly applied to horizontal wells.
The prior art is greatly different from the invention, the technical problem which is needed to be solved by the invention is not solved, and the invention provides a novel electrohydraulic composite intelligent oil production pipe column and a process method.
Disclosure of Invention
The invention aims to provide an electrohydraulic composite intelligent oil production string with the characteristics of simple structure of a hydraulic control packer, real-time monitoring of the state of the packer and dynamic pressure compensation and a process method.
The aim of the invention can be achieved by the following technical measures: the hydraulic control device is in a unsetting state, hydraulic oil enters the electrohydraulic compound pressurizing device from the oil cavity through the hydraulic control pipeline to be pressurized, hydraulic oil enters the hydraulic control packer through the hydraulic control pipeline after being pressurized, and when setting is completed, the hydraulic oil returns to the oil cavity through the hydraulic control pipeline and the setting and unsetting control device from the hydraulic control pipeline to complete setting.
The aim of the invention can be achieved by the following technical measures:
The electro-hydraulic composite intelligent oil production pipe column further comprises an oil-submersible electric pump, wherein the oil-submersible electric pump is connected with a wellhead through an oil pipe, and the lower part of the oil-submersible electric pump is connected with the oil cavity through the oil pipe to lift produced liquid to the ground.
The electrohydraulic composite intelligent oil production string further comprises an electric control switch, wherein the electric control switch is connected to the cable and connected with the hydraulic control packer through an oil pipe, and the switch and the opening degree of the electric control switch are controlled through the cable, so that the produced liquid amount of an oil layer is controlled.
The electric control switch is provided with a second pressure sensor and a flow sensor, the second pressure sensor is used for measuring the pressure of an oil layer, the flow sensor is used for measuring the liquid extraction amount of the oil layer, and pressure and flow data are uploaded to the ground through the cable.
The hydraulic packer and the electric control switch are all provided with a plurality of hydraulic packers, and each oil layer section is respectively provided with one hydraulic packer and each electric control switch.
The electrohydraulic composite intelligent oil production string also comprises a first pressure sensor, wherein the first pressure sensor is positioned in the electrohydraulic composite pressurizing device, a pressure signal is uploaded through the cable, and the cable transmits a pressurizing stop signal to stop pressurizing for the electrohydraulic composite pressurizing device after pressurizing reaches a specified pressure.
When the pressure is reduced to an early warning value, the electro-hydraulic composite supercharging device is started again from the ground through the cable to carry out pressure compensation to a specified pressure.
The object of the invention can also be achieved by the following technical measures: the technological method of the electrohydraulic composite intelligent oil extraction pipe column adopts the electrohydraulic composite intelligent oil extraction pipe column and comprises the following steps:
Step 1, a cable sends a setting signal to a setting and unsetting control device, wherein the setting and unsetting control device is in a setting state;
Step 2, hydraulic oil enters an electrohydraulic composite pressurizing device from an oil cavity through a hydraulic pipeline to be pressurized, and enters a hydraulic packer through the hydraulic pipeline after being pressurized to finish setting;
Step 3, the cable sends an deblocking signal to a setting deblocking control device, wherein the setting deblocking control device is in a deblocking state;
And 4, returning the hydraulic oil to the oil cavity by the hydraulic control packer through a hydraulic control pipeline and a setting and deblocking control device to finish deblocking.
And 2, uploading a pressure signal by a first pressure sensor in the electro-hydraulic composite pressurizing device through a cable, stopping pressurizing by the electro-hydraulic composite pressurizing device after pressurizing reaches a specified pressure, and finishing setting.
The technological method of the electrohydraulic composite intelligent oil production string further comprises the steps that after the step 4, during normal production, the first pressure sensor monitors the setting state of the hydraulic control packer, a pressure signal is transmitted to the ground through a cable, and when the pressure is reduced to an early warning value, the electrohydraulic composite supercharging device is started again from the ground through the cable to carry out pressure compensation to the specified pressure.
The invention provides an electrohydraulic composite intelligent oil production string and a process method thereof, which aim to solve the problems that the conventional packer in the intelligent layered oil production string needs other equipment for assisting in setting, the reliability of an electronic element of an electric packer is poor, the deblocking speed of a hydraulic control packer is low and the like. The electronic control is adopted as an input signal and a feedback signal, so that the response is fast; hydraulic control is used as an actuating mechanism and power transmission density is achieved. The hydraulic control packer has the advantages of quick response, simple structure, real-time monitoring of the state of the packer and dynamic pressure compensation, and meanwhile, the length of the hydraulic control pipeline is reduced, and the disadvantage of the unpacking speed is overcome.
1. The electric control is used as an input signal and a feedback signal, the hydraulic control is used as an actuating mechanism, and the control is realized in an electrohydraulic compound mode.
2. The method has the advantages of quick response, real-time monitoring of the packer state, dynamic pressure compensation, quick deblocking and the like.
Drawings
FIG. 1 is a block diagram of one embodiment of an electrohydraulic composite intelligent oil production string of the present invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, and/or combinations thereof.
The invention relates to an electrohydraulic composite intelligent oil production pipe column which mainly comprises an oil production pump, an oil cavity, an electrohydraulic composite supercharging device, a setting and deblocking control device, a cable, a hydraulic control pipeline, a hydraulic control packer, an electric control switch and the like. The cable sends a signal from the ground, the electrohydraulic composite pressurizing device pressurizes hydraulic oil in the oil cavity, the setting and unsetting control device is in a setting state, and the hydraulic oil enters the hydraulic control packer through a hydraulic control pipeline after being pressurized, so that setting is completed. When the packer is in the unpacking state, the setting and unpacking device is in the unpacking state, and hydraulic oil returns to the oil cavity from the packer to finish the unpacking. Meanwhile, one cable controls the electric control switch to realize the oil nozzle switch.
The following are several embodiments of the invention
Example 1
In a specific embodiment 1 to which the present invention is applied, as shown in fig. 1, fig. 1 is a schematic diagram of an electrohydraulic composite intelligent oil production string.
The invention discloses an electrohydraulic composite intelligent oil production string which mainly comprises a1 submersible electric pump, a 2 oil cavity, a 3 electrohydraulic composite supercharging device, a 4 setting and deblocking control device, a5 cable, a 6 hydraulic control pipeline, a 7 hydraulic control packer, an 8 electric control switch and the like. The oil-submersible electric pump 1, the oil cavity 2, the electrohydraulic composite supercharging device 3, the hydraulic control packer 7 and the electric control switch 8 are connected through an oil pipe. The oil cavity 2 is connected with a hydraulic control pipeline 6 between the hydraulic control compound supercharging device 3 and the setting and unsetting control device 4 respectively, the hydraulic control pipeline 6 is connected between the hydraulic control compound supercharging device 3 and the hydraulic control packer 7, and hydraulic oil can enter the hydraulic control compound supercharging device 3 from the oil cavity 2 through the hydraulic control pipeline 6 and then enter the hydraulic control packer 7 through the hydraulic control pipeline. Hydraulic oil can also enter a 4-setting and deblocking control device through a hydraulic control pipeline by a 7-hydraulic control packer and then enter a 2-oil cavity. The 5 cable is connected to the 3 electrohydraulic composite pressurizing device and the 4 setting and deblocking control device from the ground and is downwards connected to the 8 electric control switches of each layer.
Example 2
In a specific embodiment 2 of the invention, the process method of the pipe column comprises the steps that 5 cables send signals from the ground during setting, 2 hydraulic oil in an oil cavity enters a 3 electro-hydraulic composite pressurizing device and is pressurized, a pressure sensor is arranged in the 3 electro-hydraulic composite pressurizing device, the 5 cables upload pressure signals, and the 3 electro-hydraulic composite pressurizing device stops pressurizing after the pressurizing reaches the specified pressure. And during the period, the 4-setting and unsetting control device is in a setting state, and hydraulic oil can only flow out of the 2-oil cavity in one direction. And after the hydraulic oil is pressurized, the hydraulic oil enters a 7-hydraulic-control packer through a 6-hydraulic-control pipeline to complete setting. And when the oil cavity is unsealed, the cable 5 sends a signal from the ground, the setting and unsealing device 4 is in an unsealing state, and hydraulic oil returns to the oil cavity 2 from the packer 7 to finish unsealing. During normal production, the 7 packer is in a setting state, the pressure sensor arranged in the 3 electro-hydraulic composite supercharging device can transmit pressure signals to the ground through the 5 cable in real time, the setting state of the 7 packer is monitored, and when the pressure is reduced to an early warning value, the 3 electro-hydraulic composite supercharging device can be started again from the ground through the 5 cable to carry out pressure compensation to the specified pressure. During production, each oil layer corresponds to one 8 electric control switch, the electric control switch and the opening degree can be realized on the ground through controlling the 8 electric control switch through the 5 cables, and pressure and flow sensors can be arranged in the 8 electric control switch to monitor the production condition of each oil layer in real time.
The pipe column adopts electric control as an input signal and a feedback signal, and hydraulic control is used as an actuating mechanism, so that the control of the packer is realized in an electrohydraulic composite mode, and the pipe column has the advantages of quick response of an electric control system, high power transmission density of the hydraulic control system and simple and reliable structure. Compared with the electric control packer, the electric control packer has the advantages that the setting state can be monitored in real time, the pressure can be timely supplemented when the pressure is insufficient, the normal setting state of the packer is ensured, and the service life of a tubular column is prolonged. Compared with a hydraulic control packer, the hydraulic control pipeline does not need to be connected to the ground, the length is greatly reduced, the friction resistance of the pipeline overcome during setting and unsetting is reduced, and the setting and unsetting time is shortened.
Example 3:
in the embodiment 3 of the invention, the invention can also be used in a rod pump well, and the electrohydraulic composite intelligent oil production string mainly comprises a rod pump, an oil cavity, an electrohydraulic composite supercharging device, a setting and deblocking control device, a cable, a hydraulic control pipeline, a hydraulic control packer, an electric control switch and the like.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but although the present invention has been described in detail with reference to the foregoing embodiment, it will be apparent to those skilled in the art that modifications may be made to the technical solution described in the foregoing embodiment, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Other than the technical features described in the specification, all are known to those skilled in the art.
Claims (10)
1. The hydraulic control packer is connected with the electrohydraulic compound pressurizing device and the setting and unsetting control device through the hydraulic control pipeline, the cable is connected with the setting and unsetting control device, the setting and unsetting control device is in a setting state, hydraulic oil enters the electrohydraulic compound pressurizing device through the hydraulic control pipeline to be pressurized, hydraulic oil enters the hydraulic control packer through the hydraulic control pipeline after being pressurized, setting is completed, and the cable sends unsetting signals to the setting and unsetting control device through the hydraulic control pipeline and the setting and unsetting control device, so that hydraulic oil is in an unsetting state.
2. The electrohydraulic composite intelligent oil production string of claim 1, further comprising an electric submersible pump connected to the wellhead via an upper side of the oil pipe and connected to the oil chamber via an lower side of the oil pipe, wherein the electric submersible pump lifts produced fluid to the surface.
3. The electrohydraulic composite intelligent oil production string of claim 1, further comprising an electric control switch connected to the cable, connected to the hydraulically controlled packer through an oil pipe, and controlling the switch and opening adjustment of the electric control switch through the cable, thereby controlling the produced fluid amount of the oil layer.
4. The electro-hydraulic compound intelligent production string of claim 3, wherein a second pressure sensor and a flow sensor are provided in the electronic control switch, the second pressure sensor is used for measuring oil reservoir pressure, the flow sensor is used for measuring oil reservoir produced fluid volume, and pressure and flow data are uploaded to the ground through the cable.
5. The electrohydraulic composite intelligent oil production string of claim 3, wherein said hydraulic packer and said electronically controlled switch are multiple, one for each reservoir section.
6. The electro-hydraulic compound intelligent oil production string as defined in claim 1, further comprising a first pressure sensor located in the electro-hydraulic compound pressure boosting device, wherein the pressure signal is uploaded via the cable, and the cable transmits a pressure boosting stop signal to stop boosting the electro-hydraulic compound pressure boosting device after boosting reaches a specified pressure.
7. The electro-hydraulic compound intelligent oil production string according to claim 6, wherein the first pressure sensor transmits a pressure signal to the ground during normal production, the setting state of the hydraulic control packer is monitored, and when the pressure is reduced to an early warning value, the electro-hydraulic compound supercharging device is started again from the ground through the cable to carry out pressure compensation to a specified pressure.
8. The process method of the electrohydraulic composite intelligent oil extraction pipe column is characterized in that the process method of the electrohydraulic composite intelligent oil extraction pipe column adopts the electrohydraulic composite intelligent oil extraction pipe column in claim 1, and comprises the following steps:
Step 1, a cable sends a setting signal to a setting and unsetting control device, wherein the setting and unsetting control device is in a setting state;
Step 2, hydraulic oil enters an electrohydraulic composite pressurizing device from an oil cavity through a hydraulic pipeline to be pressurized, and enters a hydraulic packer through the hydraulic pipeline after being pressurized to finish setting;
Step 3, the cable sends an deblocking signal to a setting deblocking control device, wherein the setting deblocking control device is in a deblocking state;
And 4, returning the hydraulic oil to the oil cavity by the hydraulic control packer through a hydraulic control pipeline and a setting and deblocking control device to finish deblocking.
9. The process method of the electro-hydraulic composite intelligent oil production string according to claim 1, wherein in the step 2, a first pressure sensor in the electro-hydraulic composite pressurizing device uploads a pressure signal through a cable, and after the pressure is increased to reach a specified pressure, the electro-hydraulic composite pressurizing device stops pressurizing, so that setting is completed.
10. The process method of the electrohydraulic composite intelligent oil production string according to claim 1, further comprising, after the step 4, monitoring the setting state of the hydraulic control packer by the first pressure sensor during normal production, transmitting a pressure signal to the ground through a cable, and restarting the electrohydraulic composite pressurizing device from the ground through the cable to supplement pressure to a specified pressure when the pressure is reduced to an early warning value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211548238.9A CN118148576A (en) | 2022-12-05 | 2022-12-05 | Electrohydraulic composite intelligent oil extraction pipe column and process method |
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| CN202211548238.9A CN118148576A (en) | 2022-12-05 | 2022-12-05 | Electrohydraulic composite intelligent oil extraction pipe column and process method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119288375A (en) * | 2024-12-16 | 2025-01-10 | 西安洛科电子科技股份有限公司 | A dynamic pressure compensation control method and device for electric packer |
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2022
- 2022-12-05 CN CN202211548238.9A patent/CN118148576A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119288375A (en) * | 2024-12-16 | 2025-01-10 | 西安洛科电子科技股份有限公司 | A dynamic pressure compensation control method and device for electric packer |
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