CN210858667U - Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device - Google Patents
Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device Download PDFInfo
- Publication number
- CN210858667U CN210858667U CN201921689663.3U CN201921689663U CN210858667U CN 210858667 U CN210858667 U CN 210858667U CN 201921689663 U CN201921689663 U CN 201921689663U CN 210858667 U CN210858667 U CN 210858667U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- control
- valve
- pressure
- subsystem
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a compound electric liquid downhole control system of deep water test tubular column safety device, including ground platform, umbilical cable, energy storage group, control module and hydraulic actuator in the pit under water. The sensor devices arranged on the hydraulic actuator interface loop and the control loop are used for collecting environmental parameter data such as pressure, the ground platform analyzes and compares the collected data with the database and then sends out a control instruction, and the control instruction is transmitted to the underground control module through the umbilical cable to control the hydraulic actuator. The utility model discloses have electric hydraulic control and pilot valve pressure control dual mode, effectively improved deep water test tubular column safety device's reliability, and it is fast to have response speed, but real time monitoring, characteristics such as flexibility height can ensure deep water test safety work better.
Description
Technical Field
The utility model relates to a deep water test tubular column safety device is control system in pit belongs to ocean oil gas development field.
Background
The deepwater test string safety device is applied to deepwater oil and gas resource development and test operation, can realize real-time acquisition of underwater environment parameters, can perform accurate risk assessment on the test operation, can realize separation of a floating platform and a wellhead by timely releasing the deepwater test string safety device when an operation process needs or special working conditions occur or even severe sea conditions such as typhoons, tides, tsunamis and the like are encountered, so that the floating platform can be quickly evacuated, can quickly block high-pressure oil and gas in a string, can reduce environmental pollution to the maximum extent, ensure personnel safety and reduce operation risks. The composite electro-hydraulic downhole control system of the deepwater test string safety device is applied to the device and is the downhole part of the whole control system, the control system needs to complete specified processes aiming at different operation conditions, control objects comprise an underwater test tree connector hydraulic cylinder, an underwater test tree safety valve upper ball valve hydraulic cylinder, an underwater test tree safety valve lower ball valve hydraulic cylinder, a check valve ball valve hydraulic cylinder and a check valve pressure relief barrel hydraulic cylinder, and data acquisition is carried out by controlling an underwater hydraulic actuator valve to be opened and closed quickly and corresponding sensors, so that the whole control process is carried out quickly and orderly and environmental parameters are monitored in real time.
China mainly depends on foreign professional testing companies for deepwater testing operation, only some researches are carried out on partial mechanical structures of an underwater testing tree, a check valve and the like, and the researches on an underground control system of a deepwater testing tubular column safety device are nearly blank; the foreign research on the underground control system of the deepwater testing tubular column safety device gradually changes from direct hydraulic control, pilot valve pressure control and electrohydraulic control to full electric control, and the controllable distance of the control system is increased.
The existing underground control system of the deepwater testing pipe column safety device has the following problems:
1. the two-stage control system is lacked, so that the actuator can not be directly controlled to act by the ground when the electro-hydraulic control system fails, and the system reliability is not high;
2. the hydraulic control subsystem lacks a failure protection mechanism, does not consider the condition that a hydraulic element has a fault, has low system reliability, and has large hydraulic impact and unstable system transmission under a high-pressure working environment;
3. the system adopts a single high-pressure supply pipeline for control, the working pressure is continuously increased along with the continuous improvement of the deepwater test water depth, the situation that the opening force of the electromagnetic valve is insufficient is easy to occur, and the control on the hydraulic actuator cannot be realized.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an underground control system aiming at the current situation that the reliability of the underground control system is not high, which has the characteristics of fast response speed, stable action, long controllable distance, high reliability, visual operation and the like; the emergency disconnection and reconnection of the test pipe column can be respectively realized under different operation conditions, and the state of the underwater actuator and various environmental parameters can be reflected to the ground control platform.
The utility model provides a solve above-mentioned problem that provides and provide a compound electric liquid downhole control system of deep water test tubular column safety device, a serial communication port, include: the system comprises a ground control platform, a ground hydraulic power unit, an umbilical cable, an underwater energy accumulator group, a PLC control subsystem, a data acquisition subsystem, a communication subsystem, a hydraulic control subsystem and a hydraulic actuator. The umbilical cable comprises a cable, a hydraulic control pipeline, a high-pressure supply pipeline and a chemical reagent injection pipeline; the data acquisition subsystem comprises an underwater electronic module, a temperature sensor, a pressure sensor and a flow sensor; the hydraulic control subsystem comprises a pressure reducing valve, an electromagnetic reversing valve, a hydraulic control reversing valve, a sequence valve, a one-way throttle valve and an overflow valve; the hydraulic actuator comprises an underwater test tree connector hydraulic cylinder, an upper ball valve hydraulic cylinder of an underwater test tree safety valve, a lower ball valve hydraulic cylinder of the underwater test tree safety valve, a check valve ball valve hydraulic cylinder and a check valve pressure relief barrel hydraulic cylinder. Wherein the ground hydraulic power unit is electrically communicated with the ground control platform; the ground hydraulic power unit, the underwater accumulator group and the hydraulic control subsystem are communicated with each other through pipelines, the ground hydraulic power unit provides high-pressure hydraulic oil for the underwater accumulator group and provides a pilot hydraulic control signal for the hydraulic control subsystem, and the underwater accumulator group provides high-pressure hydraulic oil for the hydraulic control subsystem; the PLC control subsystem is respectively and electrically communicated with the communication subsystem, the data acquisition subsystem and the hydraulic control subsystem; the hydraulic control subsystem is communicated with the hydraulic actuator through a pipeline.
Furthermore, the data acquisition subsystem can transmit the data such as temperature, pressure, flow and the like detected by the sensor to the underwater electronic module for conversion processing, and then transmit the data to the PLC control subsystem and the ground control platform, the PLC control subsystem inputs the data as digital quantity, the ground control platform compares and analyzes the data with the database to determine the station where the hydraulic actuator is located and the underwater operation environment, the ground control platform judges whether the underwater test operation is normal according to the deviation angle of the pipe column, and then sends out a control instruction, the control instruction is transmitted to the underwater multifunctional control module through the umbilical cable to control the hydraulic actuator.
Furthermore, the ground hydraulic power unit provides high-pressure hydraulic oil for the underwater accumulator group, chemical reagents for the upper cavity and the lower cavity of the vertical pipe and control hydraulic oil for the hydraulic control reversing valve.
Furthermore, flow sensors are installed on the oil inlet path and the oil return path of the hydraulic actuator, the flow change of the sensors is indirect reflection of a hydraulic cylinder station, pressure sensors are installed at the pressure reducing valve, a temperature sensor is also installed in the hydraulic control subsystem, each sensor is electrically connected with an underwater electronic module in the data acquisition subsystem respectively, and the sensors are transmitted to the PLC control subsystem and the ground control platform after data conversion processing.
Furthermore, the input of the PLC control subsystem is the station where the hydraulic actuator is located and the system pressure which are obtained after the hydraulic actuator is processed by the underwater electronic module, and the output of the PLC control subsystem is an electromagnet coil of the electromagnetic directional valve.
Furthermore, the hydraulic control subsystem is provided with a low-pressure supply pipeline, a high-pressure supply pipeline, a ground hydraulic supply pipeline and a compensation supply pipeline, the electromagnetic directional valve is connected with the low-pressure supply pipeline, the low-pressure supply pipeline and the ground hydraulic supply pipeline are connected with the control end of the hydraulic control directional valve, the hydraulic control directional valve is connected with the high-pressure supply pipeline, and the compensation supply pipeline is connected with the oil return circuit of the hydraulic actuator. The hydraulic control subsystem comprises two control routes, the two control routes jointly complete the control of the hydraulic actuator, one is electro-hydraulic control, a ground control platform sends a control instruction to the PLC control subsystem through an umbilical cable, the PLC control subsystem controls the logic opening of the electromagnetic directional valve, the low-pressure supply oil is conducted, the electromagnetic directional valve is used as a pilot valve to control the opening of the hydraulic control slide valve, the high-pressure supply oil is conducted, and the hydraulic actuator acts; the other is pilot valve pressure control, a ground control platform directly sends a hydraulic pilot signal to a hydraulic control reversing valve in a hydraulic execution subsystem through an umbilical cable, the logical opening of the hydraulic control slide valve can be realized by setting different opening forces of a hydraulic control slide valve reset spring and changing the pressure of the hydraulic pilot signal, then high-pressure supply oil is conducted, and a hydraulic actuator acts. The electro-hydraulic control adopts an electromagnetic directional valve as a pilot valve to control two main valves of the hydraulic control slide valve, and the pressure control of the slide valve directly controls the hydraulic control slide valve by taking a ground hydraulic signal as a pilot signal.
Furthermore, the hydraulic actuator has two-stage automatic protection functions, the first stage is positioned in the underground control module, when the pressure of a low-pressure supply pipeline of the system is smaller than a set value, the hydraulic control reversing valve resets under the action of the spring, and the hydraulic actuator resets; the second stage is located on a hydraulic actuator, the hydraulic actuator is a connecting rod mechanism driven by a piston cylinder, when the pressure of the high-pressure supply pipeline is smaller than a set value, the piston cylinder resets under the action of a spring, and the hydraulic actuator resets.
Furthermore, the underwater accumulator group comprises a low-pressure accumulator group, a high-pressure accumulator group, a compensation accumulator group and a pneumatic auxiliary accumulator group, the pneumatic auxiliary accumulator group and the high-pressure accumulator group are connected to provide high-pressure hydraulic oil together, the underwater accumulator group is controlled by the ground control platform and the underground control module, the conduction of the high-pressure hydraulic oil in the underwater accumulator group can be realized, the distance between the power supply device and the hydraulic execution device is greatly shortened, and the response speed is accelerated.
Furthermore, the deepwater testing pipe column composite electro-hydraulic downhole control system is positioned in a vertical pipe, and in order to ensure that an electrical element and a hydraulic element cannot interfere with each other and compensate the seawater pressure, the vertical pipe is divided into an upper cavity and a lower cavity, and insulating hydraulic control fluid is respectively added to perform cavity compensation.
The utility model discloses a benefit:
1. the composite electro-hydraulic downhole control system for the deepwater test pipe column is provided, and normal release, emergency release, reconnection and working environment parameter acquisition of the test pipe column in different working environments are realized in the deepwater test operation process;
2. the pressure control of the pilot valve is used as a secondary control system, so that the ground platform can directly control the hydraulic actuator under the condition of failure of the electro-hydraulic control, and the reliability of the system is improved; the composite electro-hydraulic underground control system combining pilot valve pressure control and electro-hydraulic control is adopted, so that the characteristic of short response time of electro-hydraulic control is reserved;
3. an invalidation protection mechanism is arranged, one electromagnetic directional valve is used for controlling two hydraulic control directional valves, when one hydraulic control directional valve is damaged, the conduction of a control loop can still be completed, and the reliability of the system is improved; hydraulic impact can be effectively reduced, and the hydraulic cylinder acts more stably;
4. the high-pressure supply pipeline and the low-pressure supply pipeline are arranged, the electromagnetic directional valve is used for controlling low pressure, and then the low pressure is used for controlling high pressure, so that the problem that the opening force of the electromagnetic directional valve is insufficient in a deepwater operation environment can be solved; meanwhile, the hydraulic energy waste phenomenon caused by only using a single high-pressure supply pipeline is solved, the controllable distance of deep water testing is increased, and the direct sea drainage of an oil return path in the action process of the hydraulic actuator is realized by arranging a compensation supply pipeline.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the system structure of the present invention
FIG. 2 is a schematic diagram of the system relationship of the present invention
FIG. 3 is a schematic diagram of the hydraulic system of the present invention
FIG. 4 is a schematic diagram of the hydraulic system of the present invention
FIG. 5 is a general flow chart of the control system of the present invention
FIG. 6 is a flow chart of the normal releasing action of the control system
FIG. 7 is a flow chart of the emergency release action of the control system
FIG. 8 is a flowchart illustrating the reconnection operation of the control system according to the present invention
In the figure, 1 is a data acquisition subsystem, and 2 is a hydraulic control subsystem
Detailed Description
The present invention will be described in further detail with reference to specific examples in the drawings, which should not be construed as limiting the invention in any way.
The utility model discloses a one set of compound electric liquid underground control system who combines together pilot valve pressure control and electric liquid control to adopt high-low pressure control mode effectively to increase deep water test controllable distance, set up redundant hydraulic control component and improve system reliability and transmission stationarity.
As shown in fig. 1 and fig. 2, the temperature sensor, the pressure sensor and the flow sensor in the data acquisition subsystem acquire environmental parameters in the hydraulic control pipeline and the hydraulic actuator and transmit the environmental parameters to the underwater electronic module, the underwater electronic module performs data conversion and transmits the environmental parameters to the PLC control subsystem or transmits the environmental parameters to the ground control platform through the communication subsystem, the ground control platform performs comparison analysis on the acquired data and a database and sends a real-time control command to the PLC control subsystem through an umbilical cable, the PLC control subsystem performs conversion processing on the received command and controls the hydraulic control subsystem according to an internal program to realize the conduction of the low-pressure supply pipeline, the high-pressure supply pipeline and the compensation supply pipeline in the underwater accumulator group, wherein the low-pressure supply pipeline is connected with an oil inlet of the electromagnetic directional valve and a control end of the hydraulic directional valve through a pressure reducing valve and an overflow valve, the high-pressure supply pipeline is connected with an oil inlet of the hydraulic control reversing valve, and the compensation supply pipeline is connected with an oil return path of a hydraulic cylinder of the hydraulic actuator, so that high-pressure fluid conduction is realized by controlling the opening of the electromagnetic reversing valve, the target control of the hydraulic actuator is completed, and the oil return path is directly drained in the action process of the hydraulic actuator. The ground hydraulic power unit provides high-pressure hydraulic oil for the underwater accumulator group, provides a hydraulic pilot signal for the hydraulic control subsystem under the control of the ground control platform, and provides a redundancy method for the control of the hydraulic actuator.
As shown in fig. 3 and 4, a 101 ground platform, a 102 low-pressure accumulator, a 103 compensation accumulator, a 104 gas cylinder type auxiliary accumulator, 105 and 106 high-pressure accumulators, 201, 202, 203 and 204 overflow valves, 301, 302 and 304 constant-value pressure reducing valves, 303 electromagnetic valves, 401, 402 and 404 three-position four-way electromagnetic directional valves, 403 two-position three-way electromagnetic directional valves, 511, 512, 521, 522, 541 and 542 three-position four-way hydraulic control directional valves, 531 and 532 two-position three-way hydraulic control directional valves, 601 and 602 external control type direct-acting sequence valves, 603 and 604 internal control type direct-acting sequence valves, 701 underwater test tree connector hydraulic cylinders, 702 upper ball valve hydraulic cylinders of the underwater test tree safety valves, 703 lower ball valve hydraulic cylinders of the underwater test tree safety valves, 703 check valve hydraulic cylinders, 705 check valve hydraulic cylinders and 705 pressure relief barrel ball valve hydraulic cylinders. Wherein the pressure reducing valve and the overflow valve play a role in ensuring the system to provide stable pressure.
As shown in fig. 4, 5, 6, 7 and 8, the test operation is divided into several different areas according to the offset angle of the pipe column, and the division standard is determined by the depth of the test operation, the safety factor of the operation and other factors. When the offset angle of the pipe column is smaller than X, the ground platform is in a normal operation area; when the offset angle of the pipe column is larger than Y, the ground platform is in a red alarm area; when the deviation angle of the pipe column is larger than X and smaller than Y, the ground platform is located in a yellow alarm area, the ground control platform respectively sends out different instructions, and when the deviation angle of the pipe column is between X and Y, a normal releasing instruction is sent out, so that the test pipe column is released under a controllable condition; when the deviation angle of the pipe column is larger than Y, an emergency release instruction is sent out, the controllable release of the pipe column is realized when no time is available for testing the pipe column, and the pipe column must be cut immediately; when the deviation angle of the pipe column is smaller than X, if the underwater test tree connector is in a disconnected state, a reconnection instruction is sent out; and if the underwater test tree connector is in a connection state, sending a normal operation instruction.
The normal release process comprises the following steps:
the PLC controls to electrify the electromagnet coil at the left end of the electromagnetic directional valve 402 and the electromagnet coil of the electromagnetic directional valve 403, the electromagnetic directional valves 402 and 403 are switched to a left position, hydraulic oil of a low-pressure energy accumulator is conducted, then the hydraulic directional control valves 521, 522, 531 and 532 are switched to the left position, hydraulic oil of the high-pressure energy accumulator is conducted, oil is fed into the left end of an upper ball valve hydraulic cylinder 702 of the safety valve of the underwater test tree, a closing loop of the upper ball valve of the safety valve is conducted, oil gas at the lower part is blocked, a closing loop of a lower ball valve of the safety valve of the underwater test tree is conducted, cables and pipelines are cut, the sequence valve 602; after the flow sensor detects that the hydraulic cylinder completely acts, the electromagnet coils of the electromagnetic directional valves 402 and 403 are de-energized, the electromagnetic directional valve 402 is switched to a middle position, the hydraulic control directional valves 521 and 522 are switched to the middle position, the ball valve on the underwater test tree safety valve keeps acting, the electromagnetic directional valve 403 is switched to a right position, the hydraulic control directional valves 531 and 532 are switched to the right position, the ball valve under the underwater test tree safety valve is decompressed and reset, the electromagnet coil at the left end of the electromagnetic directional valve 404 is energized, the electromagnetic directional valve 404 is switched to the left position, the hydraulic oil of the low-pressure accumulator is conducted, then the hydraulic control directional valves 541 and 542 are switched to the left position, the hydraulic oil of the high-pressure accumulator is conducted, the sequence valve 601 is opened, the oil is fed at the left end of the check valve ball valve hydraulic cylinder 704, the check valve ball valve closes the loop and conducts, the upper oil gas, the sequence valve 604 is switched on, then oil enters the left end of the hydraulic cylinder 705 of the check valve pressure relief barrel, the opening loop of the check valve pressure relief barrel is switched on, and the check valve pressure relief barrel is opened; after the flow sensor detects that the hydraulic cylinder completely acts, the electromagnet coil of the electromagnetic reversing valve 404 loses power, the electromagnetic reversing valve 404 is switched to a middle position, the hydraulic control reversing valves 541 and 542 are switched to the middle position, the check valve ball valve and the pressure relief barrel keep acting, the electromagnet coil at the left end of the electromagnetic reversing valve 401 is powered on, the electromagnetic reversing valve 401 is switched to a left position, the low-pressure accumulator hydraulic oil is conducted, then the hydraulic control reversing valves 511 and 512 are switched to the left position, the high-pressure accumulator hydraulic oil is conducted, oil is fed into the left end of the hydraulic cylinder 701 of the underwater test tree connector, the underwater test tree connector is disconnected and conducted, the underwater test tree connector is disconnected, the test pipe column is normally disconnected, and the floating platform can be safely evacuated.
The emergency release process comprises the following steps:
the left end electromagnet coils of the electromagnetic valve 303 and the electromagnetic directional valve 404 are electrified under the control of the PLC, the high-pressure supply pressure of the system is improved, the electromagnetic directional valve 404 is switched to the left position, the low-pressure accumulator hydraulic oil is conducted, then the hydraulic control directional valves 541 and 542 are switched to the left position, the high-pressure accumulator hydraulic oil is conducted, the sequence valve 604 is conducted, the left end of the check valve ball valve hydraulic cylinder 704 is filled with oil, the check valve ball valve closing loop is conducted, the check valve ball valve is closed, the left end of the check valve pressure relief barrel hydraulic cylinder 705 is filled with oil, the check valve pressure relief barrel opening loop is conducted; and the flow sensor detects that the hydraulic cylinder completely acts or the action time of the check valve ball valve and the check valve decompression barrel is more than 15s, a signal is sent to the deep water shearing gate plate, and the deep water shearing gate plate carries out shearing. The emergency release of the test pipe column is completed, and the floating platform can be safely evacuated.
The reconnection procedure is as follows:
the PLC controls an electromagnet coil at the right end of an electromagnetic reversing valve 401 to be electrified, the electromagnetic reversing valve 401 is switched to the right position, hydraulic oil of a low-pressure energy accumulator is conducted, then hydraulic control reversing valves 511 and 512 are switched to the right position, hydraulic oil of a high-pressure energy accumulator is conducted, sequence valves 601 and 602 are opened, oil enters the right end of a hydraulic cylinder 701 of the underwater test tree connector, a connector connecting loop is conducted, and the connector is reconnected; after the flow sensor detects that the hydraulic cylinder completely acts, the electromagnet coil of the electromagnetic directional valve 401 loses power, the electromagnetic directional valve 401 is switched to a middle position, the hydraulic control directional valves 511 and 512 are switched to the middle position, the hydraulic cylinder of the underwater test tree connector keeps acting, the electromagnet coil at the right end of the electromagnetic directional valve 404 is electrified, the electromagnetic directional valve 404 is switched to a right position, the hydraulic oil of the low-pressure accumulator is conducted, then the hydraulic control directional valves 541 and 542 are switched to the right position, the hydraulic oil of the high-pressure accumulator is conducted, the oil is fed into the right end 705 of the hydraulic cylinder 705 of the check valve pressure relief barrel, the closing loop of the check valve pressure relief barrel is conducted, the closing loop of the check valve pressure relief barrel is closed, the electromagnet coil of the electromagnetic valve 303 is electrified, the electromagnetic valve 303 is opened, the high; after the flow sensor detects that the hydraulic cylinder completely acts, the electromagnetic directional valve 404 loses power, the electromagnetic directional valve 404 is switched to a middle position, the hydraulic control directional valves 541 and 542 are switched to the middle position, the check valve ball valve and the pressure relief barrel hydraulic cylinder keep acting, the electromagnet coil at the right end of the electromagnetic directional valve 402 is electrified, the electromagnetic directional valve 402 is switched to a right position, the low-pressure accumulator hydraulic oil is conducted, then the hydraulic control directional valves 521 and 522 are switched to the right position, the high-pressure accumulator hydraulic oil is conducted, oil is fed into the right end of the upper ball valve hydraulic cylinder 702 of the underwater test tree safety valve, the upper ball valve opening loop of the safety valve is conducted, the upper ball valve of the safety valve is opened, the electromagnet coil of the electromagnetic directional valve 403 loses power, the electromagnetic directional valve 403 is switched to the right position, the hydraulic control directional valves 531 and.
The operations are all electrohydraulic control flows, when the electrohydraulic control fails or the operation condition needs, the pressure oil of the hydraulic control pipeline can be gradually increased in a pilot valve pressure control mode, the hydraulic oil directly provided by the ground platform is used as a pilot signal to control the corresponding hydraulic control reversing valves to be opened sequentially, the high-pressure hydraulic oil in the underwater high-pressure accumulator group is conducted, and finally the hydraulic actuator is controlled.
Claims (5)
1. The utility model provides a compound electric liquid downhole control system of deep water test tubular column safety device which characterized in that includes: the system comprises a ground control platform, a ground hydraulic power unit, an umbilical cable, an underwater energy accumulator group, a PLC control subsystem, a data acquisition subsystem, a communication subsystem, a hydraulic control subsystem and a hydraulic actuator, wherein the umbilical cable comprises a cable, a hydraulic control pipeline, a high-pressure supply pipeline and a chemical reagent pipeline; the data acquisition subsystem comprises an underwater electronic module, a temperature sensor, a pressure sensor and a flow sensor; the hydraulic control subsystem comprises a pressure reducing valve, an electromagnetic reversing valve, a hydraulic control reversing valve, a sequence valve, a one-way throttle valve and an overflow valve; the hydraulic actuator comprises an underwater test tree and a check valve, wherein a ground hydraulic power unit is in mutual electric communication with a ground control platform, the ground hydraulic power unit, an underwater energy accumulator group and a hydraulic control subsystem are in mutual pipeline communication, a PLC control subsystem is in electric communication with a communication subsystem, a data acquisition subsystem and the hydraulic control subsystem respectively, and the hydraulic control subsystem is in pipeline communication with the hydraulic actuator.
2. The composite electro-hydraulic downhole control system of the deepwater testing pipe column safety device according to claim 1, characterized in that the data acquisition subsystem can transmit the data such as temperature, pressure, flow and the like detected by the sensor to the underwater electronic module for conversion processing and then transmit the data to the PLC control subsystem and the ground control platform, the PLC control subsystem inputs the data as digital quantity, the ground control platform compares and analyzes the data with the database and then determines the station where the hydraulic actuator is located and the underwater operation environment, the ground control platform judges whether the underwater testing operation is normal according to the pipe column offset angle and then transmits a control command to the downhole control module through an umbilical cable to control the hydraulic actuator.
3. The composite electro-hydraulic downhole control system of the deepwater testing pipe column safety device according to claim 1, wherein flow sensors are mounted on the oil inlet path and the oil return path of the hydraulic actuator, pressure sensors are mounted on the pressure reducing valves, temperature sensors are further mounted in the hydraulic control subsystem, and the sensors are electrically connected with an underwater electronic module in the data acquisition subsystem respectively.
4. The composite electro-hydraulic downhole control system of the deepwater testing pipe column safety device as claimed in claim 1, wherein the input of the PLC control subsystem is the station and system pressure of a hydraulic actuator obtained after processing by the underwater electronic module, and the output is an electromagnet coil of an electromagnetic directional valve.
5. The composite electro-hydraulic downhole control system of the deepwater testing pipe column safety device according to claim 1, wherein the hydraulic control subsystem is provided with a low-pressure supply pipeline, a high-pressure supply pipeline, a ground hydraulic supply pipeline and a compensation supply pipeline, an oil inlet of the electromagnetic directional valve is connected with the low-pressure supply pipeline, the low-pressure supply pipeline and the ground hydraulic supply pipeline are connected with a control end of a hydraulic directional control valve, an oil inlet of the hydraulic directional control valve is connected with the high-pressure supply pipeline, and the compensation supply pipeline is connected with an oil return circuit of a hydraulic actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921689663.3U CN210858667U (en) | 2019-10-10 | 2019-10-10 | Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921689663.3U CN210858667U (en) | 2019-10-10 | 2019-10-10 | Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210858667U true CN210858667U (en) | 2020-06-26 |
Family
ID=71302327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921689663.3U Active CN210858667U (en) | 2019-10-10 | 2019-10-10 | Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210858667U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630221A (en) * | 2019-10-10 | 2019-12-31 | 西南石油大学 | Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device |
| CN115059453A (en) * | 2022-06-29 | 2022-09-16 | 西南石油大学 | Pure electric modular underwater test tree |
-
2019
- 2019-10-10 CN CN201921689663.3U patent/CN210858667U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630221A (en) * | 2019-10-10 | 2019-12-31 | 西南石油大学 | Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device |
| CN115059453A (en) * | 2022-06-29 | 2022-09-16 | 西南石油大学 | Pure electric modular underwater test tree |
| CN115059453B (en) * | 2022-06-29 | 2023-06-02 | 西南石油大学 | Pure electric modularized underwater test tree |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106103884B (en) | Manifold for providing hydraulic fluid to subsea blowout preventers and related methods | |
| CN210858667U (en) | Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device | |
| CN102278124B (en) | Energy-saving hydraulic shield propulsion system | |
| CN106020102A (en) | Smart control system for subsea tree and control method thereof | |
| CN107002481A (en) | Security integrity levels (SIL) rating system controlled for preventer | |
| CN101555799A (en) | Automatic grouting control device of push bench and method | |
| CN110081226B (en) | Integrated hydraulic pressure base plate of control module under water | |
| CN205013408U (en) | Differential hydraulic control device is entirely cut to steel scrap | |
| CN110630221A (en) | Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device | |
| CN203452856U (en) | Electro-hydraulic servo hydraulic actuator of turbine adjustment system | |
| CN102425390A (en) | Linear motor-based deep-water blowout preventer group control system | |
| CN111622711A (en) | Miniature underground liquid station system for opening underground safety valve | |
| CN112283207B (en) | Energy dual-redundancy system and control method thereof | |
| CN205563232U (en) | Deep water blowout preventer stack automated control system based on underwater acoustic technique | |
| CN209147815U (en) | A kind of power plant indirect air cooling system promptly sluices control valve device | |
| CN214499592U (en) | Two-way speed governing hydraulic pressure valves | |
| CN108625822A (en) | A kind of multistage sequence trigger switch automatic shearing tubing string and can seal the emergency system of wellbore | |
| CN210293582U (en) | Intelligent water sealing test system | |
| CN208431212U (en) | A kind of underwater testing tree standpipe control system | |
| CN110566180B (en) | Guide hydraulic control system of deepwater testing tubular column safety device | |
| CN214305510U (en) | Hydraulic valve control device | |
| CN201934404U (en) | Hydraulic device capable of preventing simultaneous action of two equipment | |
| CN111579157A (en) | Bridge crane grabbing beam underwater sealing pin penetrating and retreating device with emergency function and method | |
| CN110714946A (en) | Hydraulic control system of intelligent pipeline plugging robot | |
| CN212642664U (en) | Miniature underground liquid station system for opening underground safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |