Remote electric control cement head and operation method thereof

Abstract

The embodiment of the invention provides a remote electric control cement head and an operation method thereof. The method comprises the steps that a safety inspection program before well cementation is executed; when the safety check is passed, a flow control instruction is generated in response to the operation of the user in the flow control area, and remote flow control is performed on the remote electric control cement head according to the flow control instruction, or a manual control instruction is generated in response to the operation of the user in the manual control area, and remote flow control is performed on the remote electric control cement head according to the manual control instruction. And remote manual control is carried out on the remote electric control cement head according to the manual control instruction. Various operation schemes are provided for remote control of the cement head, the operation convenience of the electric control cement head can be effectively improved, the misoperation risk is reduced, and the safety is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of oil and gas drilling and well completion cementing operations, and particularly to a remote electric control cement head and an operation method thereof. Background Art

[0002] With the continuous development of drilling technology towards deeper and ultra-deep wells, the pressures of cement injection and slurry displacement in cementing operations are gradually increasing, resulting in an increasing safety risk in wellhead operations during cementing. In traditional cement heads, the plug valve and retaining pin are mainly rotated manually during cementing operations. Therefore, in high-pressure well cementing operations, it is inevitable for operators to approach the high-pressure wellhead, which will inevitably increase the operation risk of operators during cementing. At the same time, under high-pressure conditions, it is difficult to open and close the cement head gate and retaining pin, reducing the continuity of cementing operations.

[0003] With the continuous development of cementing technology, remote electric control cement heads have emerged. Although it can solve the problem of safety risks when operators approach the high-pressure wellhead during cementing operations, the currently commonly used operation scheme is to control the gates individually. Due to the complex connection between the gates, the control scheme is cumbersome, and the means to deal with downhole abnormalities and tool abnormalities are single, increasing the risk of misoperation in complex well conditions. Therefore, there is an urgent need for a remote operation method suitable for remote electric control cement heads to reduce the risk of misoperation and improve safety. Summary of the Invention

[0004] The embodiments of the present invention provide a remote electric control cement head and an operation method thereof to solve the problems of cumbersome operation, high risk of misoperation, and low safety of the existing method.

[0005] In a first aspect, the embodiments of the present invention provide a remote electric control cement head, including: a cement head, a remote control box, and a remote electric control remote controller. The cement head includes a cement head body, an electric control plug valve, and an electric control retaining pin. The electric control plug valve at least includes a cement injection valve, a plug pressure valve, a washing valve, and a slurry displacement valve;

[0006] The remote control box is connected to the electric control plug valve and the electric control retaining pin through a cable for remotely controlling the electric control plug valve and the electric control retaining pin;

[0007] The remote electric control remote controller is communicatively connected to the remote control box by wire or wirelessly for sending control instructions to the remote control box;

[0008] An opening indicator and a sensor are provided in the electric control plug valve and the electric control retaining pin for collecting the opening information and status information of the electric control plug valve and the electric control retaining pin, and transmitting the opening information and status information to the remote electric control remote controller in real time through the remote control box;

[0009] The remote electric control remote controller is provided with a display screen, a manual control area, and a process control area. The display screen is used to display the opening information and status information transmitted in real time from the remote control box. The manual control area is used to generate a manual control instruction in response to a user operation. The process control area is used to generate a process control instruction in response to a user operation.

[0010] In one embodiment, the remote control box includes a control box body, a battery, and an antenna. The battery is used to supply power to the electric control plug valve and the electric control retaining pin. The antenna is used to transmit information between the remote control box and the remote electric control remote controller.

[0011] In one embodiment, a mechanical transmission device is provided at the motors of the electric control plug valve and the electric control retaining pin, which supports opening and closing the electric control plug valve and the electric control retaining pin by shaking.

[0012] In a second aspect, an embodiment of the present invention provides an operation method for a remote electric control cement head, including:

[0013] Execute the safety inspection procedure before cementing;

[0014] When the safety inspection passes, generate a process control instruction in response to a user operation in the process control area, and perform remote process control on the remote electric control cement head according to the process control instruction. Or, generate a manual control instruction in response to a user operation in the manual control area, and perform remote manual control on the remote electric control cement head according to the manual control instruction.

[0015] In one embodiment, performing remote control on the remote electric control cement head according to the process control instruction includes:

[0016] Control the cement injection truck and the displacement truck to perform pressure testing. After the pressure testing of the cement injection truck and the displacement truck is completed, control the remote electric control cement head to execute the cement injection instruction;

[0017] After the cement injection instruction is normally executed and completed, control the cement injection truck to perform the operation of injecting the preflush fluid and injecting the cement slurry. After the cement injection truck completes the operation of injecting the preflush fluid and injecting the cement slurry, control the remote electric control cement head to execute the plug squeezing instruction and the car washing instruction;

[0018] After the plug squeezing instruction and the car washing instruction are normally executed and completed, control the plug squeezing truck to perform the plug squeezing operation and control the cement truck to wash the car. After the plug squeezing truck completes the plug squeezing operation, control the remote electric control cement head to execute the displacement instruction;

[0019] After the displacement instruction is normally executed and completed, control the displacement truck or the well team mud pump to perform the displacement operation. After the displacement operation is completed, control the remote electric control cement head to execute the displacement end instruction;

[0020] After the car washing operation is completed, control the remote electric control cement head to execute the car washing end instruction.

[0021] In one embodiment, the cement injection instruction includes opening the cement injection valve, closing the plug valve, closing the displacement valve, and closing the car wash valve;

[0022] The plugging instruction includes closing the cement injection valve, opening the plug valve, closing the displacement valve, and opening the electric control pin;

[0023] The displacement instruction includes closing the cement injection valve, closing the plug valve, opening the displacement valve, and closing the electric control pin;

[0024] The car wash instruction includes closing the cement injection valve and opening the car wash valve;

[0025] The car wash end instruction includes closing the car wash valve;

[0026] The displacement end instruction includes closing the displacement valve and closing the electric control pin.

[0027] In one embodiment, performing the safety inspection procedure before cementing includes:

[0028] Checking whether the thread type of the remote electric control cement head is consistent with that of the electric control plug valve;

[0029] Checking whether the battery power of the remote control box and the remote electric control remote controller is greater than 95% of the total power;

[0030] Checking whether the signal between the remote control box and the remote electric control remote controller is normal.

[0031] In one embodiment, performing the safety inspection procedure before cementing further includes:

[0032] Switch the control mode to manual control through the remote electric control remote controller, execute the opening and closing instructions twice for each group of electric control plug valves and electric control pins, and check whether the opening information and status information of the electric control plug valves and electric control pins are consistent with the currently executed instructions during the execution of the instructions. If they are consistent, it passes; if not, replace a group of electric control plug valves and electric control pins and recheck;

[0033] Switch the control mode to process control through the remote electric control remote controller, execute the process control instructions twice for each group of electric control plug valves and electric control pins, and check whether the opening information and status information of the electric control plug valves and electric control pins are consistent with the currently executed instructions during the execution of the instructions. If they are consistent, it passes; if not, replace a group of electric control plug valves and electric control pins and recheck.

[0034] In one embodiment, the method further includes:

[0035] After a preset duration after the process control instruction is issued, if the process control success is not displayed on the display screen of the remote electric control remote controller, switch to manual control;

[0036] After a preset duration from the issuance of the manual control instruction, if the successful manual control is not displayed on the display screen of the remote electric control remote controller, the manual control instruction is executed again for remote manual control.

[0037] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the operation method of the remote electric control cement head as described in any item of the second aspect.

[0038] The remote electric control cement head and its operation method provided by the embodiment of the present invention. The remote electric control cement head includes: a cement head, a remote control box, and a remote electric control remote controller. The cement head includes a cement head body, an electric control cock valve, and an electric control stop pin. The electric control cock valve at least includes a cement injection valve, a plug pressing valve, a washing valve, and a displacement valve; the remote control box is connected to the electric control cock valve and the electric control stop pin through a cable for remotely controlling the electric control cock valve and the electric control stop pin; the remote electric control remote controller is communicatively connected to the remote control box in a wired or wireless manner for sending control instructions to the remote control box; the electric control cock valve and the electric control stop pin are provided with an opening indicator and a sensor for collecting the opening information and status information of the electric control cock valve and the electric control stop pin, and transmitting the opening information and status information to the remote electric control remote controller in real time through the remote control box; the remote electric control remote controller is provided with a display screen, a manual control area, and a process control area. The display screen is used to display the opening information and status information transmitted in real time from the remote control box. The manual control area is used to generate a manual control instruction in response to a user operation, and the process control area is used to generate a process control instruction in response to a user operation. By executing the safety inspection procedure before cementing; when the safety inspection passes, a process control instruction is generated in response to the user's operation in the process control area, and the remote electric control cement head is remotely controlled according to the process control instruction, or a manual control instruction is generated in response to the user's operation in the manual control area, and the remote electric control cement head is remotely manually controlled according to the manual control instruction. It provides multiple operation schemes for remotely controlling the cement head, which can effectively improve the operation convenience of the electric control cement head, reduce the risk of misoperation, and improve safety. Description of the Drawings

[0039] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0040] Figure 1 It is a schematic structural diagram of a remote electric control cement head provided by an embodiment of the present invention;

[0041] Figure 2 It is a flowchart of an operation method of a remote electric control cement head provided by an embodiment of the present invention.

[0042] Reference numerals:

[0043] 1 - Cement head;

[0044] 11 - Cement head body;

[0045] 12 - Electrically controlled plug valve;

[0046] 121 - Cement injection valve;

[0047] 122 - Plug valve;

[0048] 123 - Washing valve;

[0049] 124 - Displacement slurry valve;

[0050] 13 - Electrically controlled detent;

[0051] 2 - Remote control box;

[0052] 21 - Control box body;

[0053] 22 - Battery;

[0054] 23 - Antenna;

[0055] 3 - Remote electric control remote;

[0056] 31 - Display screen;

[0057] 32 - Manual control area;

[0058] 33 - Process control area;

[0059] 34 - Control confirmation area;

[0060] 4 - Cable;

[0061] 5 - Manifold system.

[0062] Through the above drawings, specific embodiments of the present invention have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the inventive concept in any way, but to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. Detailed description of the invention

[0063] The present invention will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are denoted by related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0064] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment, and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0065] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequential or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0066] In order to solve the problems of the existing remote electronic control cement head control scheme being cumbersome, having a high risk of misoperation, and low safety, etc., the present application proposes a remote operation scheme applicable to a remote electronic control cement head, which can reduce the risk of misoperation through a pre-designed process control under normal circumstances, and can also separately control the gate for emergency treatment under special well conditions. When the tool and the operating system malfunction, manual mechanical control means can also be used to perform effective manual control to cope with emergencies. On the premise of ensuring the safety of the cementing operation, the means of dealing with abnormal situations are enhanced, and the safe operation of the cementing operation under various well conditions is ensured. The operation method of the remote electronic control cement head provided by the present application supports operating the remote electronic control cement head in two ways: electric control and mechanical control, reduces the risk of misoperation in the cementing operation, and can also provide an emergency operation method for the cementing tool in case of abnormal situations. The following will be described in detail through specific embodiments.

[0067] Figure 1 The structural schematic diagram of the remote electronic control cement head provided in an embodiment of the present invention. As Figure 1As shown in the figure, the remote electronically controlled cement head provided in this embodiment may include: a cement head 1, a remote control box 2, and a remote electronic control remote controller 3. The cement head 1 includes a cement head body 11, an electronically controlled plug valve 12, and an electronically controlled retaining pin 13. The electronically controlled plug valve 12 at least includes a cement injection valve 121, a plug valve 122, a car wash valve 123, and a displacement slurry valve 124;

[0068] The remote control box 2 is connected to the electronically controlled plug valve 12 and the electronically controlled retaining pin 13 through a cable 4, and is used to remotely control the electronically controlled plug valve 12 and the electronically controlled retaining pin 13;

[0069] The remote electronic control remote controller 3 is communicatively connected to the remote control box 2 by a wired or wireless method, and is used to send control instructions to the remote control box;

[0070] An opening indicator and a sensor are provided in the electronically controlled plug valve 12 and the electronically controlled retaining pin 13, which are used to collect the opening information and status information of the electronically controlled plug valve and the electronically controlled retaining pin, and transmit the opening information and status information to the remote electronic control remote controller 3 in real time through the remote control box 2;

[0071] The remote electronic control remote controller 3 is provided with a display screen 31, a manual control area 32, and a process control area 33. The display screen 31 is used to display the opening information and status information transmitted from the remote control box 2 in real time. The manual control area 32 is used to generate manual control instructions in response to user operations. The process control area 33 is used to generate process control instructions in response to user operations.

[0072] In an optional implementation manner, the remote control box 2 includes a control box body 21, a battery 22, and an antenna 23. The battery 22 is used to supply power to the electronically controlled plug valve 12 and the electronically controlled retaining pin 13. The antenna 23 is used to transmit information between the remote control box 2 and the remote electronic control remote controller 3.

[0073] In an optional implementation manner, a mechanical transmission device is provided at the motor of the electronically controlled plug valve 12 and the electronically controlled retaining pin 13, which supports opening and closing the electronically controlled plug valve and the electronically controlled retaining pin by shaking.

[0074] The remote electronically controlled cement head provided in this application controls the electronically controlled plug valve and the electronically controlled retaining pin through the remote control box and the remote electronic control remote controller. As Figure 1 shown, the electronically controlled retaining pin is a double retaining pin, and the retaining pins on both sides are connected by a cable, and a common cable is connected to the remote control box. The battery used in the remote control box is an explosion-proof battery to improve the operation safety. It should be noted that there are multiple electronically controlled plug valves, for example, at least one cement injection valve, one plug valve, one car wash valve, and one displacement slurry valve, and the specific positions are as Figure 1 shown.

[0075] Optionally, the electric control plug valve and the electric control retaining pin retain a mechanical transmission device at the motor, and the electric control plug valve and the electric control retaining pin can be manually opened and closed by shaking the motor transmission mechanism. There are opening indicators and sensors in the electric control plug valve and the electric control retaining pin, and the signals of manually opening and closing the plug valve and the electric control retaining pin can be transmitted to the remote electric control remote controller in real time, facilitating the operator to perform the next operation. The electric control retaining pin is connected to the quick-connect thread through a positioning screw and can be quickly loaded and unloaded. Inside, a conversion head is used to connect the motor and the retaining pin, and in case of necessity, it can be manually switched on and off with a universal wrench. As Figure 1 shown in the remote electric control remote controller, it has a manual control area 32 and a process control area 33, providing two control methods: process control and manual control. Among them, for process control, according to the needs of the cementing operation, the operation process of the cementing electric control tools can be pre-designed, and according to the process operation buttons, multiple electric control devices can be operated simultaneously, greatly reducing the operation time of the wellhead tools; according to the operation needs, it can also be switched to the manual control mode, in which the electric control gate valve and the electric control retaining pin can be controlled separately to meet the requirements of various cementing working conditions. The remote electric control remote controller can receive the feedback of the opening information of the electric control gate valve and the electric control retaining pin, and display the on-off state of the electric control device on the control screen.

[0076] The above describes the remote electric control cement head provided by the present application. Next, the operation method of the remote electric control cement head will be further described. Figure 2 is a flowchart of the operation method of the remote electric control cement head provided by an embodiment of the present invention. As Figure 2 shown, the operation method of the remote electric control cement head provided by this embodiment may include:

[0077] S201. Execute the safety inspection procedure before cementing.

[0078] The safety inspection before cementing is the first step to ensure the safety of the cementing operation. In an optional implementation manner, executing the safety inspection procedure before cementing may include: checking whether the thread type of the remote electric control cement head is consistent with that of the electric control plug valve; checking whether the battery power of the remote control box and the remote electric control remote controller is greater than 95% of the total power; checking whether the signal between the remote control box and the remote electric control remote controller is normal. Specifically, it is necessary to ensure that the thread type of the remote electric control cement head is consistent with the current thread type of the remote control plug valve. The code of the currently selected remote control plug valve should belong to the same batch. The battery power of the remote control box and the remote electric control remote controller should be greater than 95% of the total power to ensure sufficient power during the cementing operation. Connect the electric control plug valve and the electric control retaining pin to the remote control box to ensure that the connection cable can be used normally. Before going to the well, each cable needs to carry a spare cable, and the electric control plug valve needs to carry a spare electric control plug valve. Turn on the remote control box and the remote electric control remote controller, and confirm that the communication signal between them is normal.

[0079] To further improve safety, the pre-cementing safety inspection procedure may also include: switching the control mode to manual control via a remote electric control remote controller, executing the open and close commands twice for each set of electric control plug valves and electric control retaining pins, and checking whether the opening information and status information of the electric control plug valves and electric control retaining pins are consistent with the currently executed commands during the command execution. If they are consistent, it passes; if not, replace a set of electric control plug valves and electric control retaining pins and recheck; switching the control mode to process control via the remote electric control remote controller, executing the process control commands twice for each set of electric control plug valves and electric control retaining pins, and checking whether the opening information and status information of the electric control plug valves and electric control retaining pins are consistent with the currently executed commands during the command execution. If they are consistent, it passes; if not, replace a set of electric control plug valves and electric control retaining pins and recheck. Specifically, switch the control mode of the remote electric control remote controller to manual control. Each set of remote electric control plug valves and electric control retaining pins needs to execute the open and close commands twice. During each open and close process, observe whether the indicators of the electric control plug valves and electric control retaining pins, the display status on the remote controller screen, and the actual mechanical structure movement status are consistent with the current remote control commands. If the status is consistent, it can be used in the well; if not, replace a set and recheck; then switch the control mode of the remote electric control remote controller to process control. Each set of remotely controlled electric control plug valves and electric control retaining pins executes the process control commands twice. Observe the movement status of the electric control plug valves and electric control retaining pins. If the mechanical structure movement status matches the process control commands, it can be used for well construction; if the mechanical movement status does not match the process control commands, replace the corresponding components and recheck. Finally, adjust the electric control plug valve to the open state, adjust the electric control retaining pin to the closed state, install the cementing plug into the internal cavity of the cementing head, and close the remote control box and the remote electric control remote controller. Among them, the coding of the same set of remotely controlled plug valves includes the injection valve coding, displacement valve coding, plug valve coding, and car wash valve coding. The coding of different sets of remotely controlled plug valves cannot be used interchangeably.

[0080] S202. Judge whether the safety inspection passes. When the safety inspection passes, execute step S203 or S204.

[0081] S203. Generate a process control command in response to the user's operation in the process control area, and perform remote process control on the remote electric control cement head according to the process control command.

[0082] After the remote electronic control cement head for cementing is assembled and installed on the wellhead, it is connected to the remote control box through a control cable. All electronically controlled plug valves are remotely controlled to close, and the construction is ready. According to the needs of the cementing site, the construction can be carried out in manual control mode or process control mode. It should be noted that during the switching of the cementing construction process and the operation of the remote control cement head, an operator at the wellhead and a technician need to confirm the operation procedure simultaneously before the operation can be carried out. After the operation process is completed, it is necessary to wait for the operation success to be displayed on the electronic control display screen before proceeding with the next cementing construction step.

[0083] When the user selects the process control mode for construction through the remote electronic control remote controller, a process control instruction is generated in response to the user's operation in the process control area, and the remote electronic control cement head is remotely controlled according to the process control instruction. Among them, remotely controlling the remote electronic control cement head according to the process control instruction specifically may include: after the cement head and the manifold are connected, controlling the cement injection truck and the displacement slurry truck to conduct a pressure test, and after the pressure test of the cement injection truck and the displacement slurry truck is completed, controlling the remote electronic control cement head to execute the cement injection instruction; after the cement injection instruction is normally executed and completed, controlling the cement injection truck to conduct the preflush fluid injection and cement slurry injection operations, and after the cement injection truck completes the preflush fluid injection and cement slurry injection operations, controlling the remote electronic control cement head to execute the plug squeezing instruction and the washing instruction; after the plug squeezing instruction and the washing instruction are normally executed and completed, controlling the plug squeezing truck to conduct the plug squeezing operation and controlling the cement truck to wash the well, and after the plug squeezing truck completes the plug squeezing operation, controlling the remote electronic control cement head to execute the displacement slurry instruction; after the displacement slurry instruction is normally executed and completed, controlling the displacement slurry truck or the well team mud pump to conduct the displacement slurry operation, and after the displacement slurry operation is completed, controlling the remote electronic control cement head to execute the displacement slurry end instruction; after the washing operation is completed, controlling the remote electronic control cement head to execute the washing end instruction. Among them, the cement injection instruction includes opening the cement injection valve, closing the plug squeezing valve, closing the displacement slurry valve, and closing the washing valve; the plug squeezing instruction includes closing the cement injection valve, opening the plug squeezing valve, closing the displacement slurry valve, and opening the electronic control locking pin; the displacement slurry instruction includes closing the cement injection valve, closing the plug squeezing valve, opening the displacement slurry valve, and closing the electronic control locking pin; the washing instruction includes closing the cement injection valve and opening the washing valve; the washing end instruction includes closing the washing valve; the displacement slurry end instruction includes closing the displacement slurry valve and closing the electronic control locking pin.

[0084] After the remote process control is completed, the operation mode is switched to manual operation, and the electronically controlled plug valve is operated and the cement head is disassembled according to the actual situation at the cementing site. And after the cementing construction operation is completed, it is necessary to remotely control to close all plug valves and close the electronic control locking pin, and perform the next operation according to the actual situation of the cementing operation.

[0085] S204. Generate a manual control instruction in response to the user's operation in the manual control area, and remotely manually control the remote electronic control cement head according to the manual control instruction.

[0086] When the user selects the manual control mode through the remote electronic control remote controller for construction, corresponding manual control instructions are generated according to the operations of the user in the manual control area of the remote electronic control remote controller, so as to realize the remote manual control of the remote electronic control cement head.

[0087] The operation method of the remote electronic control cement head provided in this embodiment provides multiple operation schemes for remotely controlling the cement head, which can effectively improve the operation convenience of the electronic control cement head, reduce the risk of misoperation, and improve safety. And the process control can, according to the needs of the cementing construction, pre-design the operation process of the cementing electronic control tools, and operate the buttons according to the process to perform the simultaneous operation of multiple electronic control devices, greatly reducing the operation time of the wellhead tools.

[0088] On the basis of any of the above embodiments, in order to further enhance the means of dealing with abnormal situations and ensure the safe operation of the cementing operation under various well conditions, the present application further provides an operation method for dealing with abnormal situations. Specifically, it includes: during on-site construction, if the operation success is not displayed on the electronic control display screen 2 minutes after the control instruction of the electronic control cement head is issued, if it is a process operation at this time, switch to manual operation; if it is a manual operation, perform the switch operation again and observe the screen feedback. If the feedback returns to normal, proceed to the next step of the cementing construction. If there is no feedback or the feedback is abnormal, suspend the cementing construction, relieve the pressure at the wellhead, and then the cementing operation personnel approach the wellhead to confirm the situation, and perform a manual remote control operation again. If it returns to normal, the process continues. If the above operations cannot solve the problem, if the electronic control plug valve cannot respond to the operation, use tools such as an internal hexagon wrench to manually shake the motor to perform the reverse gate operation of the electronic control plug valve; if the electronic control retaining pin cannot respond to the operation, disassemble the electronic control retaining pin motor assembly, install a conversion joint, and then manually shake open the retaining pin in an artificial manner.

[0089] That is to say, in an optional implementation manner, the operation method of the remote electronic control cement head provided in this embodiment may further include: after a preset duration after the process control instruction is issued, if the process control success is not displayed on the display screen of the remote electronic control remote controller, switch to manual control; after a preset duration after the manual control instruction is issued, if the manual control success is not displayed on the display screen of the remote electronic control remote controller, execute the manual control instruction again for remote manual control; after a preset duration after the manual control instruction is executed again, if the manual control success is not displayed on the display screen of the remote electronic control remote controller, the adjustment, repair or continuous construction can be carried out in an artificial mechanical control manner.

[0090] In summary, the present application provides multiple operation schemes for the remote electric control cement head, namely manual control and process control. By controlling through these two methods, the risk of misoperation in cementing operations is reduced, and the operation convenience of the electric control cement head can be effectively improved. In particular, the process control can, according to the needs of cementing construction, pre-design the operation process of the cementing electric control tools, and operate multiple electric control devices simultaneously by operating the buttons according to the process, greatly reducing the operation time of the wellhead tools. At the same time, an operation method for dealing with various complex situations is further provided, and an emergency operation method for the cementing tools in abnormal situations is provided, which greatly improves the reliability of remotely controlling the wellhead tools for cementing.

[0091] The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to implement the technical solutions of any one of the above method embodiments.

[0092] Each embodiment in the present disclosure is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the differences between each embodiment and other embodiments are emphasized.

[0093] The protection scope of the present disclosure is not limited to the above embodiments. Obviously, those skilled in the art can make various changes and deformations to the present disclosure without departing from the scope and spirit of the present disclosure. If these changes and deformations fall within the scope of the claims of the present disclosure and their equivalent technologies, the intention of the present disclosure also includes these changes and deformations.

Claims

1. A remote electronically controlled cement head, characterized in that, it includes: a cement head, a remote control box and a remote electronic control remote controller. The cement head includes a cement head body, an electronically controlled plug valve and an electronically controlled retaining pin. The electronically controlled plug valve at least includes a cement injection valve, a plug pressing valve, a washing valve and a displacement slurry valve; The remote control box is connected to the electronically controlled plug valve and the electronically controlled retaining pin through a cable, and is used for remotely controlling the electronically controlled plug valve and the electronically controlled retaining pin; The remote electronic control remote controller is communicatively connected to the remote control box by wire or wirelessly, and is used for sending control instructions to the remote control box; An opening indicator and a sensor are provided in the electronically controlled plug valve and the electronically controlled retaining pin, which are used for collecting the opening information and status information of the electronically controlled plug valve and the electronically controlled retaining pin, and transmitting the opening information and status information to the remote electronic control remote controller in real time through the remote control box; The remote electronic control remote controller is provided with a display screen, a manual control area and a process control area. The display screen is used for displaying the opening information and status information transmitted in real time from the remote control box. The manual control area is used for generating a manual control instruction in response to a user operation, and the process control area is used for generating a process control instruction in response to a user operation.

2. The remote electronically controlled cement head according to claim 1, characterized in that, The remote control box includes a control box body, a battery and an antenna. The battery is used for supplying power to the electronically controlled plug valve and the electronically controlled retaining pin, and the antenna is used for information transmission between the remote control box and the remote electronic control remote controller.

3. The remote electronically controlled cement head according to claim 1, characterized in that, A mechanical transmission device is provided at the motor of the electronically controlled plug valve and the electronically controlled retaining pin, which supports opening and closing the electronically controlled plug valve and the electronically controlled retaining pin by shaking.

4. The operation method of the remote electronically controlled cement head according to any one of claims 1-3, characterized in that, it includes: Performing a safety inspection procedure before cementing; When the safety inspection passes, generating a process control instruction in response to the user's operation in the process control area, and performing remote process control on the remote electronically controlled cement head according to the process control instruction, or generating a manual control instruction in response to the user's operation in the manual control area, and performing remote manual control on the remote electronically controlled cement head according to the manual control instruction.

5. The method according to claim 4, characterized in that, The remotely controlling the remote electronically controlled cement head according to the process control instruction includes: Controlling the cement injection truck and the displacement slurry truck to perform pressure testing, and after the pressure testing of the cement injection truck and the displacement slurry truck is completed, controlling the remote electronically controlled cement head to execute the cement injection instruction; After the cement injection instruction is normally executed, controlling the cement injection truck to perform the operation of injecting preflush fluid and injecting cement slurry. After the cement injection truck completes the operation of injecting preflush fluid and injecting cement slurry, controlling the remote electronically controlled cement head to execute the plug pressing instruction and the washing instruction; After the plugging instruction and the car washing instruction are normally executed and completed, control the plugging vehicle to perform plugging operation and control the cement truck to wash the car. After the plugging vehicle completes the plugging operation, control the remote electric control cement head to execute the displacement slurry instruction; After the displacement slurry instruction is normally executed and completed, control the displacement slurry vehicle or the well team mud pump to perform displacement slurry operation. After the displacement slurry operation is completed, control the remote electric control cement head to execute the displacement slurry end instruction; After the car washing operation is completed, control the remote electric control cement head to execute the car washing end instruction.

6. The method according to claim 5, wherein, the cement injection instruction includes opening the cement injection valve, closing the plugging valve, closing the displacement slurry valve and closing the car washing valve; the plugging instruction includes closing the cement injection valve, opening the plugging valve, closing the displacement slurry valve and opening the electric control pin; the displacement slurry instruction includes closing the cement injection valve, closing the plugging valve, opening the displacement slurry valve and closing the electric control pin; the car washing instruction includes closing the cement injection valve and opening the car washing valve; the car washing end instruction includes closing the car washing valve; the displacement slurry end instruction includes closing the displacement slurry valve and closing the electric control pin.

7. The method according to claim 4, wherein, the execution of the safety inspection procedure before cementing includes: checking whether the thread type of the remote electric control cement head is consistent with that of the electric control choke valve; checking whether the battery power of the remote control box and the remote electric control remote controller is greater than 95% of the total power; checking whether the signal between the remote control box and the remote electric control remote controller is normal.

8. The method according to claim 7, wherein, the execution of the safety inspection procedure before cementing further includes: switching the control mode to manual control through the remote electric control remote controller, and executing the opening and closing instructions twice for each group of electric control choke valves and electric control pins. During the execution of the instructions, check whether the opening information and status information of the electric control choke valves and the electric control pins are consistent with the currently executed instructions. If they are consistent, it passes; if not, replace a group of electric control choke valves and electric control pins and recheck; switching the control mode to process control through the remote electric control remote controller, and executing the process control instructions twice for each group of electric control choke valves and electric control pins. During the execution of the instructions, check whether the opening information and status information of the electric control choke valves and the electric control pins are consistent with the currently executed instructions. If they are consistent, it passes; if not, replace a group of electric control choke valves and electric control pins and recheck.

9. The method according to any one of claims 4-8, wherein, the method further includes: after a preset duration after the process control instruction is issued, if the process control success is not displayed on the display screen of the remote electric control remote controller, switch to manual control; after a preset duration after the manual control instruction is issued, if the manual control success is not displayed on the display screen of the remote electric control remote controller, execute the manual control instruction again for remote manual control.

10. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer-executable instructions that, when executed by a processor, are used to implement the operation method according to any one of claims 4-9.

Images