CN111622711A - Miniature underground liquid station system for opening underground safety valve - Google Patents

Miniature underground liquid station system for opening underground safety valve Download PDF

Info

Publication number
CN111622711A
CN111622711A CN202010459995.3A CN202010459995A CN111622711A CN 111622711 A CN111622711 A CN 111622711A CN 202010459995 A CN202010459995 A CN 202010459995A CN 111622711 A CN111622711 A CN 111622711A
Authority
CN
China
Prior art keywords
underground
valve
normally closed
safety valve
electromagnetic valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010459995.3A
Other languages
Chinese (zh)
Inventor
陈光利
谭章龙
刘孝强
李伯仁
丁柏松
马自江
杭鲁滨
黄晓波
陶正
章鹏程
林士森
唐少鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Starse Energy and Technology Group Co Ltd
Original Assignee
Starse Energy and Technology Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Starse Energy and Technology Group Co Ltd filed Critical Starse Energy and Technology Group Co Ltd
Priority to CN202010459995.3A priority Critical patent/CN111622711A/en
Publication of CN111622711A publication Critical patent/CN111622711A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/16—Control means therefor being outside the borehole
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/027—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/002—Electrical failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • F15B2013/0448—Actuation by solenoid and permanent magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure

Abstract

The invention relates to a miniature underground liquid station system for opening an underground safety valve, belonging to the technical field of underground safety production; the system comprises an aboveground electrical control system, an underground electrical control system and an underground micro liquid station; the underground electric control system is connected with the safety valve through the underground micro liquid station. The underground safety valve is controlled by the underground electric system to open the underground safety valve, so that the problem of control delay of the traditional safety valve is greatly solved, the working state of the underground safety valve is monitored more accurately in real time, the underground potential safety hazard is eliminated, the well repairing operation is avoided, and the underground safe production is facilitated.

Description

Miniature underground liquid station system for opening underground safety valve
Technical Field
The invention relates to a miniature underground liquid station system for opening an underground safety valve, and belongs to the technical field of underground safety production.
Background
An underground Safety Valve (SSSV) (SubSurface Safety Valve) is an underground tool which is arranged in an oil and gas well and can be closed emergently to prevent blowout and ensure the Safety of oil and gas well facilities and production when abnormal conditions such as fire alarm, pipeline breakage, irresistible natural disasters (such as earthquake, ice condition, strong typhoon and the like) and the like occur in production facilities. The underground safety valve can close the oil circuit in emergency when the system is in abnormal condition, so as to prevent blowout, and is a key facility in the oil exploitation completion tool. Traditional subsurface safety valve is through opening and close of aboveground hydraulic system remote control relief valve, and traditional ground control subsurface safety valve's general principle does: the hydraulic pressure is added from the ground, the high-pressure liquid enters the piston cavity through the control pipeline to push the piston to move downwards, the spring is compressed, and the valve plate is jacked open to realize opening; the ground control pressure is kept, namely the opening state is kept; the ground control pressure is released, and the valve plate is reset under the action of the spring to realize closing. The traditional underground safety valve is opened and closed by remotely controlling the safety valve through an aboveground hydraulic system, and the control has certain time delay due to the fact that the oil way is long in transmission distance.
The intelligent composite continuous pipeline widely adopted in the oil well at present is an intelligent pipeline consisting of a non-metallic material multilayer composite base material, a communication wire, a heating wire and a cable which are embedded inside, and a single pipe is as long as several kilometers (without a joint in the middle), so that the well completion and the exploitation operation time can be greatly reduced, the oil extraction efficiency and the benefit can be improved, and the safety of an oil well system can be improved; the development of corresponding matched well completion tools is combined, and the whole set of petroleum system equipment can be upgraded and updated.
Disclosure of Invention
The invention aims to solve the technical problems that the opening and closing of an underground safety valve are controlled remotely through an aboveground hydraulic system in the prior art, an oil path is externally arranged and is connected and bound outside a conveying oil pipe one by one, each oil pipe needs to be bound by a protective cover, the operation efficiency is low, the collision damage risk is high, the well completion and well repair cost is high, and a certain time delay is caused by long-distance hydraulic control due to the long transmission distance of the oil path, and the maintenance is inconvenient.
In order to solve the problems, the technical scheme adopted by the invention is to provide a ground control micro down-hole liquid station control system for opening and closing a down-hole safety valve, which comprises an up-hole electrical control system, a down-hole electrical control system and a down-hole micro liquid station; the underground electric control system is connected with the underground safety valve through the underground micro liquid station.
Preferably, the aboveground electrical control system comprises a computer, a Programmable Logic Controller (PLC) and a power carrier machine I; a first power carrier module is arranged in the first power carrier; and the computer is connected with the first power carrier module through the Programmable Logic Controller (PLC).
Preferably, the downhole electrical control system comprises a second power carrier, a remote data acquisition and transmission module and a relay; and a second power carrier module is arranged in the second power carrier, the second power carrier is connected with one end of the relay through a remote data acquisition and transmission module, and the other end of the relay is connected with the underground micro liquid station.
Preferably, a first power carrier module arranged on the aboveground electrical control system is connected with a second power carrier module arranged on the underground electrical control system through a power line.
Preferably, the underground micro liquid station comprises an oil tank, a motor, a micro plunger pump, an overflow valve, a normally closed first electromagnetic valve, a normally closed second electromagnetic valve, a check valve and a single-action hydraulic cylinder; the single-acting hydraulic cylinder is provided with an oil path inlet, and the oil tank is connected with the oil path inlet arranged on the single-acting hydraulic cylinder through a normally closed electromagnetic valve I; a micro plunger pump is arranged between the oil tank and the normally closed electromagnetic valve I and is connected with a motor; a check valve is arranged between the normally closed electromagnetic valve I and the oil way inlet of the single-action hydraulic cylinder; the oil tank is connected with an oil way inlet arranged on the single-action hydraulic cylinder through a normally closed electromagnetic valve II; an overflow valve is arranged between the oil tank and the normally closed electromagnetic valve I; the motor, the normally closed electromagnetic valve I and the normally closed electromagnetic valve II are connected with the relay; the single-acting hydraulic cylinder is connected with the safety valve.
Preferably, an oil way inlet of the single-acting hydraulic cylinder is provided with a pressure sensor, and the pressure sensor is connected with the underground remote data acquisition and transmission module.
Preferably, a filter is arranged between the oil tank and the micro plunger pump.
The invention also provides a working method of the miniature underground liquid station system for opening and closing the underground safety valve, which comprises the following steps:
step 1: an instruction for opening the safety valve, which is made by the aboveground electrical control system, is transmitted by the aboveground computer through the programmable logic controller PLC and the power carrier machine I, and a signal is transmitted to the underground power carrier machine II through the power line and then transmitted to the motor through the remote data acquisition and transmission module and the relay;
step 2: the motor drives the miniature plunger pump to work, the highest output pressure is about 100Mpa, the normally closed electromagnetic valve is started, hydraulic oil flows into the single-action hydraulic cylinder, the piston rod is pushed to move until the valve clack of the safety valve is opened;
and step 3: when the valve clack of the safety valve is opened, the pressure sensor transmits the pressure value to the ground through the remote data acquisition and transmission module, an instruction is sent out from the ground to close the normally closed solenoid valve I, and an oil way leading to the single-acting hydraulic cylinder is subjected to pressure maintaining through the check valve, so that the valve clack is continuously in an opening state;
and 4, step 4: when the pressure sensor detects that the pressure is reduced, the motor and the miniature plunger pump work, and the normally closed electromagnetic valve is opened for pressure compensation; when the pressure is complemented to the opening pressure of the pressure sensor, the normally closed electromagnetic valve I is closed;
and 5: an instruction for closing the safety valve, which is made by an aboveground electrical control system, is transmitted by an aboveground computer through a Programmable Logic Controller (PLC) and a power line carrier machine I, a signal is transmitted to a downhole power line carrier machine II through a power line, and then transmitted to a normally closed electromagnetic valve I and a normally closed electromagnetic valve II through a remote data acquisition and transmission module and a relay, wherein the normally closed electromagnetic valve I is closed, the normally closed electromagnetic valve II is opened, an oil way is unloaded, and a valve clack of the safety valve is closed; when sudden power failure occurs, the normally closed electromagnetic valve I is closed after power failure, the normally closed electromagnetic valve II is opened under the power supply of the standby power supply, the oil way is unloaded, and the valve clack of the safety valve is closed.
Compared with the prior art, the invention has the following beneficial effects:
the underground safety valve opening system provided by the invention has the advantages that the underground safety valve is opened after the underground liquid station is controlled by the aboveground electrical system, the problem of control delay of the traditional safety valve is greatly solved, the working state of the underground safety valve is more accurately monitored in real time, the underground potential safety hazard is eliminated, and the well repairing operation is avoided.
Drawings
FIG. 1 is a schematic diagram of an overall control structure of a micro down-hole fluid station system for opening a down-hole safety valve according to the present invention;
FIG. 2 is a schematic diagram of the overall control structure of a micro down-hole fluid station system for opening a down-hole safety valve according to the present invention;
FIG. 3 is a schematic diagram of a downhole fluid station of a micro downhole fluid station system for opening a downhole safety valve according to the present invention;
FIG. 4 is a schematic diagram of a miniature downhole fluid station system component for opening a downhole safety valve in accordance with the present invention;
reference numerals: 1. the system comprises a safety valve 2, a downhole fluid station 3, an oil tank 4, a filter 5, a motor 6, a micro plunger pump 7, an overflow valve 8, a normally closed electromagnetic valve I9, a normally closed electromagnetic valve II 10, a check valve 11, a single-action hydraulic cylinder 12, a pressure sensor 13, an aboveground electrical control system 14 and a downhole electrical control system;
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1-4, the present invention provides a micro down-hole liquid station system for opening a down-hole safety valve, comprising an up-hole electrical control system 13, a down-hole electrical control system 14 and a down-hole micro liquid station 2; the aboveground electrical control system 13 is connected with the underground electrical control system 14, and the underground electrical control system 14 is connected with the safety valve 1 through the underground micro liquid station 2. The aboveground electrical control system 13 comprises a computer, a programmable logic controller PLC and a power carrier machine I; a first power carrier module is arranged in the first power carrier; and the computer is connected with the first power carrier module through the Programmable Logic Controller (PLC). The downhole electrical control system 14 comprises a second power carrier machine, a remote data acquisition and transmission module (remote I/O) and a relay; and a second power carrier module is arranged in the second power carrier, the second power carrier is connected with one end of the relay through a remote data acquisition and transmission module, and the other end of the relay is connected with the underground micro liquid station 2. And a first power carrier module arranged on the aboveground electrical control system 13 is connected with a second power carrier module arranged on the underground electrical control system 14 through a power line. The underground micro liquid station 2 comprises an oil tank 3, a motor 5, a micro plunger pump 6, an overflow valve 7, a normally closed solenoid valve I8, a normally closed solenoid valve II 9, a check valve 10 and a single-action hydraulic cylinder 11; the single-acting hydraulic cylinder 11 is provided with an oil path inlet, and the oil tank 3 is connected with the oil path inlet arranged on the single-acting hydraulic cylinder 11 through a normally closed electromagnetic valve I8; a micro plunger pump 6 is arranged between the oil tank 3 and the normally closed electromagnetic valve I8, and the micro plunger pump 6 is connected with the motor 5; a check valve 10 is arranged between the normally closed electromagnetic valve I8 and the oil path inlet of the single-action hydraulic cylinder 11; the oil tank 3 is connected with an oil way inlet arranged on the single-action hydraulic cylinder 11 through a normally closed electromagnetic valve II 9; an overflow valve 7 is arranged between the oil tank 3 and the normally closed electromagnetic valve I8; the motor 5, the normally closed electromagnetic valve I8 and the normally closed electromagnetic valve II 9 are connected with the relay; the single-acting hydraulic cylinder 11 is connected to the safety valve 1. The single-acting hydraulic cylinder 11 is provided with an oil path inlet which is provided with a pressure sensor 12, and the pressure sensor 12 is connected with the underground remote data acquisition and transmission module. A filter 4 is arranged between the oil tank 3 and the micro plunger pump 6.
A working method of a miniature downhole fluid station system for opening a downhole safety valve comprises the following steps:
step 1: an instruction for opening the safety valve, which is made by the aboveground electrical control system, is transmitted by the aboveground computer through the programmable logic controller PLC and the power carrier machine I, and a signal is transmitted to the underground power carrier machine II through the power line and then transmitted to the motor through the remote data acquisition and transmission module and the relay;
step 2: the motor drives the miniature plunger pump to work, the highest output pressure is about 100Mpa, the normally closed electromagnetic valve is started, hydraulic oil flows into the single-action hydraulic cylinder, the piston rod is pushed to move until the valve clack of the safety valve is opened;
and step 3: when the valve clack of the safety valve is opened, the pressure sensor transmits the pressure value to the ground through the remote data acquisition and transmission module, an instruction is sent out from the ground to close the normally closed solenoid valve I, and an oil way leading to the single-acting hydraulic cylinder is subjected to pressure maintaining through the check valve, so that the valve clack is continuously in an opening state;
and 4, step 4: when the pressure sensor detects that the pressure is reduced, the motor and the miniature plunger pump work, and the normally closed electromagnetic valve is opened for pressure compensation; when the pressure is complemented to the opening pressure of the pressure sensor, the normally closed electromagnetic valve I is closed;
and 5: an instruction for closing the safety valve, which is made by an aboveground electrical control system, is transmitted by an aboveground computer through a Programmable Logic Controller (PLC) and a power line carrier machine I, a signal is transmitted to a downhole power line carrier machine II through a power line, and then transmitted to a normally closed electromagnetic valve I and a normally closed electromagnetic valve II through a remote data acquisition and transmission module and a relay, wherein the normally closed electromagnetic valve I is closed, the normally closed electromagnetic valve II is opened, an oil way is unloaded, and a valve clack of the safety valve is closed; when sudden power failure occurs, the normally closed electromagnetic valve I is closed after power failure, the normally closed electromagnetic valve II is opened under the power supply of the standby power supply, the oil way is unloaded, and the valve clack of the safety valve is closed.
The invention belongs to the field of petroleum equipment, and provides a system for opening an underground safety valve. Relates to the overall design of an underground safety valve operating system, the structural design of an underground liquid station and the design of an aboveground electrical control system. An operator on the well can control the opening and closing of the safety valve operated by the underground micro liquid station through the upper computer. The signal transmission between the underground and the aboveground is realized through a carrier module, and the electric signal realizes the switch control of an underground motor, an electromagnetic valve and a sensor through a relay. When the hydraulic oil pump works, hydraulic oil in the oil tank is pumped by the pump to be pressurized to a certain degree to push the push rod of the safety valve, the butterfly valve is opened, and the safety valve is opened. The underground liquid station adopts a structure of a semicircular column and surrounds an upper pipeline of the underground safety valve; the internal part of the oil tank adopts a layered structure to separate an oil tank, a hydraulic element, an electrical element and the like, thereby being convenient for the arrangement of the elements and pipelines.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.

Claims (8)

1. A miniature liquid station system in pit for opening relief valve in pit which characterized in that: the system comprises an aboveground electrical control system, an underground electrical control system and an underground micro liquid station; the underground electric control system is connected with the underground safety valve through the underground micro liquid station.
2. A micro down-hole fluid station system for opening a down-hole safety valve as defined in claim 1, wherein: the aboveground electrical control system comprises a computer, a Programmable Logic Controller (PLC) and a power carrier machine I; a first power carrier module is arranged in the first power carrier; and the computer is connected with the first power carrier module through the Programmable Logic Controller (PLC).
3. A micro down-hole fluid station system for opening a down-hole safety valve as defined in claim 2, wherein: the underground electrical control system comprises a power line carrier machine II, a remote data acquisition and transmission module and a relay; and a second power carrier module is arranged in the second power carrier, the second power carrier is connected with one end of the relay through a remote data acquisition and transmission module, and the other end of the relay is connected with the underground micro liquid station.
4. A micro down-hole fluid station system for opening a down-hole safety valve as defined in claim 3, wherein: and a first power carrier module arranged on the aboveground electrical control system is connected with a second power carrier module arranged on the underground electrical control system through a power line.
5. A micro down-hole fluid station system for opening a down-hole safety valve as defined in claim 4, wherein: the underground micro liquid station comprises an oil tank, a motor, a micro plunger pump, an overflow valve, a normally closed first electromagnetic valve, a normally closed second electromagnetic valve, a one-way valve and a single-action hydraulic cylinder; the single-acting hydraulic cylinder is provided with an oil path inlet, and the oil tank is connected with the oil path inlet arranged on the single-acting hydraulic cylinder through a normally closed electromagnetic valve I; a micro plunger pump is arranged between the oil tank and the normally closed electromagnetic valve I and is connected with a motor; a check valve is arranged between the normally closed electromagnetic valve I and the oil way inlet of the single-action hydraulic cylinder; the oil tank is connected with an oil way inlet arranged on the single-action hydraulic cylinder through a normally closed electromagnetic valve II; an overflow valve is arranged between the oil tank and the normally closed electromagnetic valve I; the motor, the normally closed electromagnetic valve I and the normally closed electromagnetic valve II are connected with the relay; the single-acting hydraulic cylinder is connected with the safety valve.
6. A micro down-hole fluid station system for opening a down-hole safety valve as defined in claim 5, wherein: and an oil way inlet of the single-action hydraulic cylinder is provided with a pressure sensor, and the pressure sensor is connected with the underground remote data acquisition and transmission module.
7. A micro down-hole fluid station system for opening a down-hole safety valve as defined in claim 6, wherein: and a filter is arranged between the oil tank and the micro plunger pump.
8. A working method of a miniature underground liquid station system for opening an underground safety valve is characterized by comprising the following steps: the method comprises the following steps:
step 1: an instruction for opening the safety valve, which is made by the aboveground electrical control system, is transmitted by the aboveground computer through the programmable logic controller PLC and the power carrier machine I, and a signal is transmitted to the underground power carrier machine II through the power line and then transmitted to the motor through the remote data acquisition and transmission module and the relay;
step 2: the motor drives the miniature plunger pump to work, the highest output pressure is about 100Mpa, the normally closed electromagnetic valve is started, hydraulic oil flows into the single-action hydraulic cylinder, the piston rod is pushed to move until the valve clack of the safety valve is opened;
and step 3: when the valve clack of the safety valve is opened, the pressure sensor transmits the pressure value to the ground through the remote data acquisition and transmission module, an instruction is sent out from the ground to close the normally closed solenoid valve I, and an oil way leading to the single-acting hydraulic cylinder is subjected to pressure maintaining through the check valve, so that the valve clack is continuously in an opening state;
and 4, step 4: when the pressure sensor detects that the pressure is reduced, the motor and the miniature plunger pump work, and the normally closed electromagnetic valve is opened for pressure compensation; when the pressure is complemented to the opening pressure of the pressure sensor, the normally closed electromagnetic valve I is closed;
and 5: an instruction for closing the safety valve, which is made by an aboveground electrical control system, is transmitted by an aboveground computer through a Programmable Logic Controller (PLC) and a power line carrier machine I, a signal is transmitted to a downhole power line carrier machine II through a power line, and then transmitted to a normally closed electromagnetic valve I and a normally closed electromagnetic valve II through a remote data acquisition and transmission module and a relay, wherein the normally closed electromagnetic valve I is closed, the normally closed electromagnetic valve II is opened, an oil way is unloaded, and a valve clack of the safety valve is closed; when sudden power failure occurs, the normally closed electromagnetic valve I is closed after power failure, the normally closed electromagnetic valve II is opened under the power supply of the standby power supply, the oil way is unloaded, and the valve clack of the safety valve is closed.
CN202010459995.3A 2020-05-27 2020-05-27 Miniature underground liquid station system for opening underground safety valve Pending CN111622711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010459995.3A CN111622711A (en) 2020-05-27 2020-05-27 Miniature underground liquid station system for opening underground safety valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010459995.3A CN111622711A (en) 2020-05-27 2020-05-27 Miniature underground liquid station system for opening underground safety valve

Publications (1)

Publication Number Publication Date
CN111622711A true CN111622711A (en) 2020-09-04

Family

ID=72269974

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010459995.3A Pending CN111622711A (en) 2020-05-27 2020-05-27 Miniature underground liquid station system for opening underground safety valve

Country Status (1)

Country Link
CN (1) CN111622711A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112796707A (en) * 2020-12-31 2021-05-14 深圳市弗赛特科技股份有限公司 Unattended intelligent wellhead safety control system and control method thereof
CN114458241A (en) * 2022-02-14 2022-05-10 上海工程技术大学 Optical fiber communication high-temperature-resistant in-situ control system of underground tool micro liquid station

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112796707A (en) * 2020-12-31 2021-05-14 深圳市弗赛特科技股份有限公司 Unattended intelligent wellhead safety control system and control method thereof
CN114458241A (en) * 2022-02-14 2022-05-10 上海工程技术大学 Optical fiber communication high-temperature-resistant in-situ control system of underground tool micro liquid station
CN114458241B (en) * 2022-02-14 2023-08-08 上海工程技术大学 Optical fiber communication high-temperature-resistant in-situ control system of underground tool miniature liquid station

Similar Documents

Publication Publication Date Title
US8708054B2 (en) Dual path subsea control system
US8839868B2 (en) Subsea control system with interchangeable mandrel
US20110005770A1 (en) Subsea control system
US20080296025A1 (en) Control system
CN111622711A (en) Miniature underground liquid station system for opening underground safety valve
US9243478B2 (en) Piping system having an insulated annulus
WO2013133874A1 (en) Remotely operated system for use in hydraulic fracturing of ground formations, and method of using same
US20210131410A1 (en) Mobile Pump System
CN108412820A (en) A kind of 30000Psi super-pressure well head safe control system
JP2020516793A (en) Hydrocarbon fluid piping system protection
US20210148385A1 (en) Electrically Actuated Valves for Manifold Trailers or Skids
WO2008074995A1 (en) Electrical power storage and pressurised fluid supply system
CN111577201A (en) Miniature liquid station in pit
CN212642664U (en) Miniature underground liquid station system for opening underground safety valve
CN202031575U (en) Testing device for units and components of intelligent well
CN212898425U (en) Miniature downhole fluid station system for controlling downhole safety valve
CN212642665U (en) Miniature downhole fluid station
RU2367779C1 (en) Method of exploiting oil field
CN210798899U (en) Shale gas horizontal well high pressure pumping bridging plug device
RU84453U1 (en) OIL AND GAS WELL
RU2367782C1 (en) Method of exploiting gas field
CN110630221A (en) Composite electro-hydraulic downhole control system for deepwater testing pipe column safety device
CN114458241B (en) Optical fiber communication high-temperature-resistant in-situ control system of underground tool miniature liquid station
WO2013141735A1 (en) Oil well unit (alternatives)
RU2367778C1 (en) Method of exploiting oil-gas field

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination