An electrically controlled positive flow multi-mode control system of a deep well drilling machine

Abstract

This invention discloses a multi-mode electro-hydraulic control system for deep well drilling rigs, belonging to the field of drilling rig electro-hydraulic control technology. The system includes an electro-pump assembly, comprising electro-pump one, electro-pump two, electro-pump three, and electro-pump four, each of which includes a displacement control valve and a pressure control valve; and positive flow valve groups one and two, which are connected to different actuators through several check valves, relief valves, directional valves, and selector valves. The control system controls the displacement control valves and pressure control valves of each electro-pump in the electro-pump assembly, as well as the directional valves and selector valves in positive flow valve groups one and two, to achieve fully electro-controlled positive flow multi-mode control. This invention increases the controllability of multi-mode control composite actions, improving the drilling rig's action response speed and working efficiency.

Description

Technical Field

[0001] This invention relates to a multi-mode control system for positive flow in deep well drilling rigs, belonging to the field of drilling rig electro-hydraulic control technology. Background Technology

[0002] Drilling rigs, such as rescue drilling rigs, are increasingly widely used as primary equipment for underground accident rescue. They mainly rely on the rotation and feed of the power head to achieve drilling operations. Depending on the geological formation and construction process, especially when driven by dual power heads, multiple actions are often required in combination. Because rescue operations require speed, the demands for action response speed and construction efficiency are increasing. Currently, most domestic drilling rigs use load-sensitive systems, which are prone to incoordination in the combination of multiple actions and have slow action response speeds, failing to meet the requirements of efficient construction. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-mode control system for positive flow of electrical control in deep well drilling rigs, which increases the controllability of multi-mode control composite actions and improves the action response speed and working efficiency of drilling rigs.

[0004] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0005] In a first aspect, the present invention provides a multi-mode control system for positive flow in a deep well drilling rig, comprising:

[0006] The electric pump assembly includes electric pump one, electric pump two, electric pump three and electric pump four. Each electric pump includes a displacement control valve and a pressure control valve. The outlets of electric pump one and electric pump two are connected to ports P1 and P2 of positive flow valve group one, respectively. The outlets of electric pump three and electric pump four are connected to ports P3 and P4 of positive flow valve group two, respectively.

[0007] Positive flow valve group one and positive flow valve group two, each including several check valves, relief valves, directional valves and selector valves, are connected to different actuators through several check valves, relief valves, directional valves and selector valves. The check valves are used to prevent oil from flowing backward, the relief valves are used to limit the maximum pressure of the valve group, the directional valves are used to switch the direction of oil flow, and the selector valves are used to select whether to supply high-pressure oil to different actuators.

[0008] The control system is used to control the displacement control valves and pressure control valves of each electric pump in the electric pump assembly, as well as the reversing valves and selector valves in positive flow valve group one and positive flow valve group two, so as to realize fully electric positive flow multi-mode control.

[0009] Furthermore, the actuator includes a top drive motor, a top drive cylinder, a sleeve drive cylinder, and a sleeve drive motor; the first positive flow valve assembly includes ports T1 and T2, ports A1 and B1, ports A2 and B2, and ports A3 and B3; the second positive flow valve assembly includes ports T3 and T4, ports A4 and B4, ports A5 and B5, and ports A6 and B6, wherein:

[0010] The T1 and T2 ports are connected to the hydraulic oil tank, the A1 and B1 ports are connected to the top drive motor, the A2 and B2 ports are connected to the top drive cylinder, and the A3 and B3 ports are connected to the sleeve drive cylinder.

[0011] Ports T3 and T4 are connected to the hydraulic oil tank, ports A4 and B4 are connected to ports A1 and B1 of the top drive motor and positive flow valve group 1, ports A5 and B5 are connected to ports A2 and B2 of the top drive cylinder and positive flow valve group 1, and ports A6 and B6 are connected to the sleeve drive motor.

[0012] Furthermore, the positive flow valve group includes a first check valve 51, a first overflow valve 52, a sixth check valve 514, a first top drive rotary reversing valve 53, a top drive rotary selection valve 54, a fifth check valve 513, a first flow regeneration reversing valve 55, a first top drive lifting and releasing reversing valve 56, a second check valve 57, a first top drive lifting and releasing selection valve 511, a fourth check valve 512, a sleeve lifting and releasing reversing valve 58, a third check valve 59, and a sleeve lifting and releasing selection valve 510.

[0013] The first check valve 51 is disposed between port P1 and the first relief valve 52, the first relief valve 52 is disposed between port T1 and port T2, and the sixth check valve 514 is disposed between port P2 and the first relief valve 52.

[0014] The first top drive rotary reversing valve 53 is located between port T1 and port T2, and the first top drive rotary reversing valve 53 is connected to the top drive motor through ports A1 and B1. The top drive rotary selection valve 54 is located between port P1 and the first top drive rotary reversing valve 53. The fifth check valve 513 is located between port P2 and the first top drive rotary reversing valve 53.

[0015] The first top drive lifting and releasing reversing valve 56 is located between port T1 and port T2, and is connected to the top drive cylinder through ports A2 and B2. One end of the first flow regeneration reversing valve 55 is connected to port T2, one end is connected to port B2 through the fourth check valve 512, one end is directly connected to port B2, and the other end is connected to the first top drive lifting and releasing reversing valve 56. The second check valve 57 is located between port P1 and the first top drive lifting and releasing reversing valve 56. The first top drive lifting and releasing selection valve 511 is located between port P2 and the first top drive lifting and releasing reversing valve 56.

[0016] The casing lifting and releasing directional valve 58 is located between port T1 and port T2, and the casing lifting and releasing directional valve 58 is connected to the casing drive cylinder through ports A3 and B3. The third check valve 59 is located between port P1 and the casing lifting and releasing directional valve 58, and the casing lifting and releasing selection valve 510 is located between port P2 and the casing lifting and releasing directional valve 58.

[0017] Furthermore, the positive flow valve group two includes a seventh check valve 61, a second overflow valve 62, a thirteenth check valve 614, a second top drive rotary reversing valve 63, an eighth check valve 64, a twelfth check valve 613, a second flow regeneration reversing valve 65, a second top drive lifting and releasing reversing valve 66, a second top drive lifting and releasing selection valve 67, a tenth check valve 611, an eleventh check valve 612, a sleeve rotary reversing valve 68, a ninth check valve 69, and a sleeve rotary selection valve 610.

[0018] The seventh check valve 61 is located between port P3 and the second overflow valve 62, the second overflow valve 62 is located between port T3 and port T4, and the thirteenth check valve 614 is located between port P4 and the second overflow valve 62.

[0019] The second top drive rotary reversing valve 63 is located between port T3 and port T4, and the second top drive rotary reversing valve 63 is connected to port A1 and port B1 of the top drive motor and positive flow valve group 1 through ports A4 and B4. The eighth check valve 64 is located between port P3 and the second top drive rotary reversing valve 63, and the twelfth check valve 613 is located between port P4 and the second top drive rotary reversing valve 63.

[0020] The second top drive lifting and releasing reversing valve 66 is located between port T3 and port T4, and the second top drive lifting and releasing reversing valve 66 is connected to ports A2 and B2 of the top drive cylinder and positive flow valve group 1 through ports A5 and B5. One end of the second flow regeneration reversing valve 65 is connected to port T4, one end is connected to port B5 through the eleventh check valve 612, one end is directly connected to port B5, and the other end is connected to the second top drive lifting and releasing reversing valve 66. The second top drive lifting and releasing selection valve 67 is located between port P3 and the second top drive lifting and releasing reversing valve 66. The tenth check valve 611 is located between port P4 and the second top drive lifting and releasing reversing valve 66.

[0021] The sleeve rotary reversing valve 68 is located between port T3 and port T4, and the sleeve rotary reversing valve 68 is connected to the sleeve drive motor through ports A6 and B6. The ninth check valve 69 is located between port P3 and the sleeve rotary reversing valve 68, and the sleeve rotary selection valve 610 is located between port P4 and the sleeve rotary reversing valve 68.

[0022] Furthermore, the control system includes five operating modes: normal mode, main lifting mode, main rotation mode, and sleeve mode;

[0023] In normal mode, the rotation of the top drive motor and the extension and retraction of the top drive cylinder are controlled independently or in combination by the electronically controlled pump according to the signal from the operating handle.

[0024] In the main lifting mode, based on the signal from the operating handle, the electric control pump prioritizes the extension and retraction of the top drive cylinder, while simultaneously allowing the rotation of the top drive motor.

[0025] In the main rotation mode, the rotation of the top drive motor is controlled by the electronically controlled pump, while the extension and retraction of the top drive cylinder is allowed.

[0026] In the sleeve mode, the rotation of the top drive motor, the extension and retraction of the top drive cylinder, the rotation of the sleeve drive motor, and the extension and retraction of the sleeve drive cylinder are simultaneously controlled by the electronically controlled pump, and these actions can be performed individually or in combination.

[0027] Furthermore, the system also includes a tripping mode, in which the extension and retraction speeds of the top drive cylinder are increased by a first flow regeneration directional valve and a second flow regeneration directional valve.

[0028] Furthermore, in sleeve mode, at least one of the following modes can be opened simultaneously: normal mode, main lifting mode, or main rotation mode.

[0029] Furthermore, the trip-in / trip-out mode can be activated simultaneously with any other mode.

[0030] Furthermore, in any mode, the system allows for stepless adjustment of the flow and maximum pressure supplied to the currently executing action.

[0031] Secondly, the present invention provides a drilling rig, including the deep well drilling rig electrically controlled positive flow multi-mode control system described in any of the preceding claims.

[0032] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0033] This invention provides a multi-mode control system for positive flow in deep well drilling rigs. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the deep well drilling rig electrically controlled positive flow multi-mode control system provided by the present invention;

[0035] Figure 2 This is a schematic diagram of the electrically controlled pump one;

[0036] Figure 3 This is a schematic diagram of the second electrically controlled pump;

[0037] Figure 4 This is a schematic diagram of the electrically controlled pump three;

[0038] Figure 5This is a schematic diagram of the four electrically controlled pumps;

[0039] Figure 6 This is a schematic diagram of positive flow valve assembly one;

[0040] Figure 7 This is a schematic diagram of positive flow valve assembly two;

[0041] Figure 8 This is a diagram showing the input and output of the controller.

[0042] In the diagram, 1. Electric pump 1; 11. Pump 1 displacement control valve; 12. Pump 1 pressure control valve; 2. Electric pump 2; 21. Pump 2 displacement control valve; 22. Pump 2 pressure control valve; 3. Electric pump 3; 31. Pump 3 displacement control valve; 32. Pump 3 pressure control valve; 4. Electric pump 4; 41. Pump 4 displacement control valve; 42. Pump 4 pressure control valve; 5. Positive flow valve group 1; 51. First check valve; 52. First relief valve; 53. First top drive rotary reversing valve; 54. Top drive rotary selector valve; 55. First flow regeneration reversing valve; 56. First top drive lifting and lowering reversing valve; 57. Second check valve; 58. Casing lifting and lowering reversing valve; 59. Third check valve; 510. Casing lifting and lowering selector valve; 5 11. First top drive lifting and lowering selector valve; 512. Fourth check valve; 513. Fifth check valve; 514. Sixth check valve; 6. Positive flow valve group two; 61. Seventh check valve; 62. Second relief valve; 63. Second top drive rotary reversing valve; 64. Eighth check valve; 65. Second flow regeneration reversing valve; 66. Second top drive lifting and lowering reversing valve; 67. Second top drive lifting and lowering selector valve; 68. Casing rotary reversing valve; 69. Ninth check valve; 610. Casing rotary selector valve; 611. Tenth check valve; 612. Eleventh check valve; 613. Twelfth check valve; 614. Thirteenth check valve; 7. Top drive motor; 8. Top drive cylinder; 9. Casing drive cylinder; 10. Casing drive motor. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] Example 1, as Figures 1-8 As shown in the figure, this embodiment introduces a multi-mode control system for positive flow of electrical control in deep well drilling rigs, including:

[0047] like Figures 1-5As shown, there are four electrically controlled pumps, each containing a displacement control valve and a pressure control valve. The outlets of electrically controlled pump 1 and electrically controlled pump 2 are connected to ports P1 and P2 of positive flow valve group 5, respectively. Displacement control valve 11 of pump 1 controls the output flow of electrically controlled pump 1, and pressure control valve 12 of pump 1 limits the output pressure of electrically controlled pump 1. Displacement control valve 21 of pump 2 controls the output flow of electrically controlled pump 2, and pressure control valve 22 of pump 2 limits the output pressure of electrically controlled pump 2. The outlets of electrically controlled pump 3 and electrically controlled pump 4 are connected to ports P3 and P4 of positive flow valve group 6, respectively. Displacement control valve 31 of pump 3 controls the output flow of electrically controlled pump 3, and pressure control valve 32 of pump 3 limits the output pressure of electrically controlled pump 3. Displacement control valve 41 of pump 4 controls the output flow of electrically controlled pump 4, and pressure control valve 42 of pump 4 limits the output pressure of electrically controlled pump 4. Positive flow valve group 1 5 includes several check valves, relief valves, directional valves and selector valves. Ports T1 and T2 of positive flow valve group 1 5 are connected to the hydraulic oil tank. Ports A1 and B1 are connected to the top drive motor 7 and ports A4 and B4 of positive flow valve group 2 6. Ports A2 and B2 are connected to the top drive cylinder 8 and ports A5 and B5 of positive flow valve group 2 6. Ports A3 and B3 are connected to the sleeve drive cylinder 9. Positive flow valve group 2 6 includes several check valves, relief valves, directional valves and selector valves. Ports T3 and T4 of positive flow valve group 2 6 are connected to the hydraulic oil tank. Ports A4 and B4 are connected to the top drive motor 7 and ports A1 and B1 of positive flow valve group 1 5. Ports A5 and B5 are connected to the top drive cylinder 8 and ports A2 and B2 of positive flow valve group 1 5. Ports A6 and B6 are connected to the sleeve drive motor 10.

[0048] like Figure 6As shown, the positive flow valve group includes a first check valve 51, a first relief valve 52, a sixth check valve 514, a first top drive rotary reversing valve 53, a top drive rotary selection valve 54, a fifth check valve 513, a first flow regeneration reversing valve 55, a first top drive lifting and lowering reversing valve 56, a second check valve 57, a first top drive lifting and lowering selection valve 511, a fourth check valve 512, a casing lifting and lowering reversing valve 58, a third check valve 59, and a casing lifting and lowering selection valve 510; the first check valve 514... 1. A check valve 514 is located between port P1 and the first relief valve 52, which is located between ports T1 and T2. The sixth check valve 514 is located between port P2 and the first relief valve 52. The first top drive rotary directional valve 53 is located between ports T1 and T2, and is connected to the top drive motor via ports A1 and B1. The top drive rotary selection valve 54 is located between port P1 and the first top drive rotary directional valve 53. The fifth check valve 51... 3 is located between port P2 and the first top drive rotary reversing valve 53; the first top drive lifting and releasing reversing valve 56 is located between port T1 and port T2, and the first top drive lifting and releasing reversing valve 56 is connected to the top drive cylinder through ports A2 and B2; one end of the first flow regeneration reversing valve 55 is connected to port T2, one end is connected to port B2 through the fourth check valve 512, one end is directly connected to port B2, and the other end is connected to the first top drive lifting and releasing reversing valve 56; the second check valve 57 is located at port P1. The first top drive lifting and releasing selection valve 511 is located between port P2 and the first top drive lifting and releasing selection valve 56; the casing lifting and releasing selection valve 58 is located between port T1 and port T2, and the casing lifting and releasing selection valve 58 is connected to the casing drive cylinder through ports A3 and B3; the third check valve 59 is located between port P1 and the casing lifting and releasing selection valve 58; and the casing lifting and releasing selection valve 510 is located between port P2 and the casing lifting and releasing selection valve 58.The first check valve 51 and the sixth check valve 514 prevent cross-contamination of high-pressure oil between ports P1 and P2. The first relief valve 52 limits the maximum pressure of the valve group for safety. The first top drive rotary reversing valve 53 switches the rotation direction of the top drive motor 7. The top drive rotary selection valve 54 selects whether high-pressure oil from port P1 is supplied to the top drive motor 7. The fifth check valve 513 prevents reverse flow of oil and serves to maintain load and protect the pump. The first top drive lifting and lowering reversing valve 56 switches the running direction of the drive cylinder. The first top drive lifting and lowering selection valve 511 selects whether high-pressure oil from port P2 is supplied to the top drive cylinder 8. The second check valve 57 prevents reverse flow of oil and serves to maintain load and protect the pump. The first flow regeneration reversing valve 55 regenerates flow rate and... For auxiliary oil return, when the top drive cylinder 8 has oil entering from the large chamber and returning from the small chamber, the first flow regeneration directional valve 55 is in the upper position. At this time, the oil returning from the small chamber enters the large chamber through the flow regeneration valve, increasing the cylinder extension speed. When the top drive cylinder 8 has oil entering from the small chamber and returning from the large chamber, the first flow regeneration directional valve 55 is in the lower position. At this time, the oil in the large chamber of the cylinder can return to the oil tank through the flow regeneration valve, reducing the back pressure of the oil return and reducing power loss. The fourth check valve 512 is used to prevent the oil in the large chamber of the top drive cylinder from flowing backward during flow regeneration. The sleeve lifting and releasing directional valve 58 is used to switch the running direction of the sleeve drive cylinder 9. The third check valve 59 is used to prevent the oil from flowing backward, and plays the role of load holding and pump protection. The sleeve lifting and releasing selection valve 510 is used to select whether the high pressure oil at port P2 is supplied to the sleeve drive cylinder 9.

[0049] like Figure 7As shown, the positive flow valve group two includes a seventh check valve 61, a second overflow valve 62, a thirteenth check valve 614, a second top drive rotary reversing valve 63, an eighth check valve 64, a twelfth check valve 613, a second flow regeneration reversing valve 65, a second top drive lifting and lowering reversing valve 66, a second top drive lifting and lowering selection valve 67, a tenth check valve 611, an eleventh check valve 612, a sleeve rotary reversing valve 68, a ninth check valve 69, and a sleeve rotary selection valve 610; the seventh check valve 61 is located at port P3 and... The second relief valve 62 is located between ports T3 and T4. The thirteenth check valve 614 is located between port P4 and the second relief valve 62. The second top drive rotary directional valve 63 is located between ports T3 and T4, and the second top drive rotary directional valve 63 is connected to ports A1 and B1 of the top drive motor and positive flow valve group 1 via ports A4 and B4. The eighth check valve 64 is located between port P3 and the second top drive rotary directional valve 63. The twelfth check valve 613 is located between ports P3 and T4. The second top drive rotary reversing valve 66 is located between port P4 and port T3 and port T4, and is connected to ports A2 and B2 of the top drive cylinder and positive flow valve group 1 via ports A5 and B5. One end of the second flow regeneration reversing valve 65 is connected to port T4, one end is connected to port B5 via the eleventh check valve 612, one end is directly connected to port B5, and the other end is connected to the second top drive rotary reversing valve 66. Selector valve 67 is located between port P3 and the second top drive lifting and lowering reversing valve 66; the tenth one-way valve 611 is located between port P4 and the second top drive lifting and lowering reversing valve 66; the sleeve rotation reversing valve 68 is located between port T3 and port T4, and the sleeve rotation reversing valve 68 is connected to the sleeve drive motor through ports A6 and B6; the ninth one-way valve 69 is located between port P3 and sleeve rotation reversing valve 68; and the sleeve rotation selector valve 610 is located between port P4 and sleeve rotation reversing valve 68.The seventh check valve 61 and the thirteenth check valve 614 prevent high-pressure oil from flowing between ports P3 and P4. The second relief valve 62 limits the maximum pressure of the valve group and serves a safety function. The second top drive rotary reversing valve 63 is used to switch the rotation direction of the top drive motor 7. The eighth check valve 64 and the twelfth check valve 65 prevent oil from flowing backward and serve to maintain the load and protect the pump. The second top drive lifting and releasing reversing valve 66 is used to switch the running direction of the drive cylinder. The second top drive lifting and releasing selector valve 67 is used to select whether the high-pressure oil at port P3 is supplied to the top drive cylinder 8. The tenth check valve 611 prevents oil from flowing backward and serves to maintain the load and protect the pump. The second flow regeneration reversing valve 65 is used to regenerate flow and assist in oil return. The large chamber of the top drive cylinder 8 is supplied with oil. When the small chamber returns oil, the second flow regeneration directional valve 65 operates in the upper position. At this time, the oil returning from the small chamber enters the large chamber through the flow regeneration valve, increasing the extension speed of the cylinder. When the top drive cylinder 8 enters the small chamber and returns oil from the large chamber, the second flow regeneration directional valve 65 operates in the lower position. At this time, the oil in the large chamber of the cylinder can return to the oil tank through the flow regeneration valve, reducing the back pressure of the return oil and reducing power loss. The eleventh check valve 612 is used to prevent the oil in the large chamber of the top drive cylinder from flowing backward during flow regeneration. The sleeve rotation directional valve 68 is used to switch the running direction of the sleeve drive motor 10. The ninth check valve 69 is used to prevent the oil from flowing backward, and plays the role of load holding and pump protection. The sleeve rotation selector valve 610 is used to select whether the high pressure oil at port P4 is supplied to the sleeve drive cylinder 9.

[0050] like Figure 8 As shown, the deep well drilling rig's electrically controlled positive flow multi-mode control system adopts a fully electrically controlled approach and positive flow control, mainly divided into five modes: conventional mode, main hoisting mode, main rotation mode, casing mode, and tripping mode.

[0051] Normal mode: This mode includes two actions: rotation of the top drive motor 7 and extension / retraction of the top drive cylinder 8. When each action is operated individually, the four electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the handle signal, the corresponding directional valves switch synchronously, and the corresponding selector valves are energized. When the two actions are combined, electronically controlled pump 1 and electronically controlled pump 2 supply oil to the top drive motor 7, the corresponding electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the top drive rotation handle signal, the positive flow valve group 1 5 top drive rotation directional valve and top drive rotation selector valve 54 are energized, electronically controlled pump 3 and electronically controlled pump 4 supply oil to the top drive cylinder 8, the corresponding electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the top drive lifting / releasing handle signal, and the positive flow valve group 2 6 top drive lifting / releasing directional valve and top drive lifting / releasing selector valve are energized.

[0052] Main lifting mode: This mode includes two actions: rotation of the top drive motor 7 and extension / retraction of the top drive cylinder 8. When each action is operated individually, the four electric pump displacement control valves and pressure control valves receive corresponding current according to the handle signal, the corresponding directional valves switch synchronously, and the corresponding selector valves are energized. When the two actions are combined, electric pump 2 supplies oil to the top drive motor 7, the corresponding electric pump displacement control valves and pressure control valves receive corresponding current according to the top drive rotation handle signal, the positive flow valve group 5 energizes the top drive rotation directional valve, and the top drive rotation selector valve 54 is de-energized. Electric pumps 1, 3, and 4 supply oil to the top drive cylinder 8, the corresponding electric pump displacement control valves and pressure control valves receive corresponding current according to the top drive lifting / releasing handle signal, the positive flow valve group 5 and 2 energize the top drive lifting / releasing directional valves, and the corresponding top drive lifting / releasing selector valves 511 and 67 are de-energized and energized, respectively.

[0053] Main Rotation Mode: This mode includes two actions: rotation of the top drive motor 7 and extension / retraction of the top drive cylinder 8. When each action is operated individually, the four electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the handle signal, the corresponding directional valves switch synchronously, and the corresponding selector valves are energized. When the two actions are combined, electronically controlled pumps 2, 3, and 4 supply oil to the top drive motor 7, the corresponding electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the top drive rotation handle signal, the positive flow valve group 5 and the second top drive rotation directional valve are energized, the top drive rotation selector valve 54 is not energized, electronically controlled pump 1 supplies oil to the top drive cylinder 8, the corresponding electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the top drive lifting / releasing handle signal, the positive flow valve group 5 top drive lifting / releasing directional valve is energized, and the top drive lifting / releasing selector valve 511 is not energized.

[0054] Sleeve Mode: This mode includes four actions: rotation of top drive motor 7, extension / retraction of top drive cylinder 8, rotation of sleeve drive motor 10, and extension / retraction of sleeve drive cylinder 9. When top drive motor 7 rotates or top drive cylinder 8 extends / retracts independently, the four electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the handle signal, and the corresponding directional valves switch synchronously, energizing the corresponding selector valves. When sleeve drive motor 10 rotates independently, electronically controlled pumps 3 and 4 supply oil for this action, and the corresponding electronically controlled pump displacement control valves and pressure control valves receive corresponding current according to the sleeve rotation handle signal, energizing the positive flow valve group 2 6 and the sleeve rotation directional valve 68. When the casing rotation selector valve 610 is energized, and the casing drive cylinder 9 is operated independently for extension and retraction, the electric pump 1 and electric pump 2 supply oil for this action. The corresponding electric pump displacement control valve and pressure control valve receive the corresponding current according to the casing lifting and releasing handle signal. The positive flow valve group 5 casing lifting and releasing reversing valve 58 and casing lifting and releasing selector valve 510 are energized. When the top drive motor 7 rotates and the top drive cylinder 8 extends and retracts simultaneously, one of the first three modes can be selected at the same time, and the oil supply method is determined according to the selected mode. When the casing drive motor 10 rotates and the casing drive cylinder 9 extends and retracts simultaneously, the electric pump 1 and electric pump 2 supply oil to the casing drive cylinder. 9. Oil supply: Electric pumps 3 and 4 supply oil to the casing drive motor 10, with control identical to that when operating independently. When the top drive cylinder 8 and the casing drive cylinder 9 operate simultaneously, electric pumps 1 and 2 supply oil to the casing drive cylinder 9. The corresponding electric pump displacement control valve and pressure control valve receive the corresponding current based on the casing lifting / releasing handle signal. Positive flow valve group 15 energizes the casing lifting / releasing directional valve 58 and the casing lifting / releasing selector valve 510. Electric pumps 3 and 4 supply oil to the top drive cylinder 8. The corresponding electric pump displacement control valve and pressure control valve receive the corresponding current based on the top drive lifting / releasing handle signal. Positive flow valve group 26 energizes the top drive cylinder 8. The lifting and lowering reversing valve and the top drive lifting and lowering selection valve 67 are energized; when the top drive motor 7 and the sleeve drive motor 10 operate simultaneously, the electric control pump 1 and the electric control pump 2 supply oil to the top drive motor 7, and the corresponding electric control pump displacement control valve and pressure control valve receive the corresponding current according to the top drive rotation handle signal; the positive flow valve group 1 5 top drive rotation reversing valve and the top drive rotation selection valve 54 are energized; the electric control pump 3 and the electric control pump 4 supply oil to the sleeve drive motor 10, and the corresponding electric control pump displacement control valve and pressure control valve receive the corresponding current according to the sleeve rotation handle signal; the positive flow valve group 2 6 sleeve rotation reversing valve 68 is energized; and the sleeve rotation selection valve 610 is energized.When all four actions are performed simultaneously, pump one supplies oil to the casing drive cylinder 9. The corresponding electronically controlled pump displacement control valve and pressure control valve receive the corresponding current based on the casing lifting / releasing handle signal. The casing lifting / releasing directional valve 58 of positive flow valve group one 5 is energized, while the casing lifting / releasing selector valve 510 is de-energized. Pump two supplies oil to the top drive motor 7. The corresponding electronically controlled pump displacement control valve and pressure control valve receive the corresponding current based on the top drive rotation handle signal. The top drive rotation directional valve of positive flow valve group one 5 is energized, while the top drive rotation selector valve 510 is de-energized. 4. When pump 3 is de-energized, it supplies oil to the casing drive motor 10. The corresponding electronically controlled pump displacement control valve and pressure control valve receive the corresponding current based on the casing rotation handle signal. The positive flow valve group 2, casing rotation reversing valve 68 is energized, while the casing rotation selector valve 610 is de-energized. 4. When pump 4 supplies oil to the top drive cylinder 8, the corresponding electronically controlled pump displacement control valve and pressure control valve receive the corresponding current based on the top drive lifting handle signal. The positive flow valve group 2, top drive lifting reversing valve 6 is energized, while the top drive lifting selector valve 67 is de-energized.

[0055] Tripping and lifting mode: This mode enables rapid lifting and lowering of the top drive. When this mode is activated, as the top drive cylinder 8 extends, the corresponding positive flow valve group's flow regeneration valve is energized. The return oil flow from the small chamber of the top drive cylinder 8 is regenerated and enters the large chamber, further increasing the extension speed. As the top drive cylinder 8 retracts, the corresponding positive flow valve group's flow regeneration valve is energized. The oil in the large chamber of the cylinder can simultaneously return through the top drive lifting and lowering reversing valve and the flow regeneration valve, reducing the return oil back pressure and minimizing energy loss.

[0056] In casing mode, the conventional mode, main hoisting mode, or main rotary mode can be opened simultaneously; the tripping mode can be opened at the same time as other modes.

[0057] In any mode, the supply flow and maximum pressure of the currently executed action can be steplessly adjusted.

[0058] Function Description:

[0059] Electric pump: The electric pump displacement control valve controls the pump output flow rate according to the electro-proportional handle signal, and the electric pump pressure control valve limits the pump pressure according to the set value or the electro-proportional knob signal.

[0060] Positive flow valves: Among them, the directional valve switches the direction of action, the selector valve selects the oil supply pump by switching the valve core, the check valve prevents oil from flowing backward or replenishing oil, and the relief valve is used to protect the system from overpressure.

[0061] The deep well drilling rig electrical control positive flow multi-mode control system provided by this invention can be used in drilling equipment such as deep well drilling rigs.

[0062] Example 2: This embodiment of the invention also provides a drilling rig, including the deep well drilling rig electrical control positive flow multi-mode control system as described in any one of Examples 1.

[0063] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A deep well rig electrically controlled positive flow multi-mode control system, characterized in that, The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for a top drive. The application relates to a full-electric positive flow multi-mode control system for The first top drive lifting and releasing reversing valve (56) is arranged between T1 port and T2 port, and the first top drive lifting and releasing reversing valve (56) is connected with the top drive cylinder through A2 and B2 ports, one end of the first flow regeneration reversing valve (55) is connected with T2 port, one end is connected with B2 port through the fourth one-way valve (512), one end is directly connected with B2 port, and the other end is connected with the first top drive lifting and releasing reversing valve (56); the second one-way valve (57) is arranged between P1 port and the first top drive lifting and releasing reversing valve (56); and the first top drive lifting and releasing selection valve (511) is arranged between P2 port and the first top drive lifting and releasing reversing valve (56). The casing lifting and releasing reversing valve (58) is arranged between T1 port and T2 port, and the casing lifting and releasing reversing valve (58) is connected with the casing drive oil cylinder through A3 and B3 ports; the third one-way valve (59) is arranged between P1 port and the casing lifting and releasing reversing valve (58); and the casing lifting and releasing selection valve (510) is arranged between P2 port and the casing lifting and releasing reversing valve (58). The positive flow valve group two comprises a seventh one-way valve (61), a second overflow valve (62), a thirteenth one-way valve (614), a second top drive rotating reversing valve (63), an eighth one-way valve (64), a twelfth one-way valve (613), a second flow regeneration reversing valve (65), a second top drive lifting and releasing reversing valve (66), a second top drive lifting and releasing selection valve (67), a tenth one-way valve (611), an eleventh one-way valve (612), a casing rotating reversing valve (68), a ninth one-way valve (69) and a casing rotating selection valve (610). The seventh one-way valve (61) is arranged between P3 port and the second overflow valve (62); the second overflow valve (62) is arranged between T3 port and T4 port; and the thirteenth one-way valve (614) is arranged between P4 port and the second overflow valve (62). The second top drive rotating reversing valve (63) is arranged between T3 port and T4 port, and the second top drive rotating reversing valve (63) is connected with the top drive motor and the A1 and B1 ports of the positive flow valve group one through A4 and B4 ports; the eighth one-way valve (64) is arranged between P3 port and the second top drive rotating reversing valve (63); and the twelfth one-way valve (613) is arranged between P4 port and the second top drive rotating reversing valve (63). The second top drive lifting and releasing reversing valve (66) is arranged between T3 port and T4 port, and the second top drive lifting and releasing reversing valve (66) is connected with the top drive oil cylinder and the A2 and B2 ports of the positive flow valve group one through A5 and B5 ports; one end of the second flow regeneration reversing valve (65) is connected with T4 port, one end is connected with B5 port through the eleventh one-way valve (612), one end is directly connected with B5 port, and the other end is connected with the second top drive lifting and releasing reversing valve (66); the second top drive lifting and releasing selection valve (67) is arranged between P3 port and the second top drive lifting and releasing reversing valve (66); and the tenth one-way valve (611) is arranged between P4 port and the second top drive lifting and releasing reversing valve (66). The casing rotary switching valve (68) is arranged between T3 port and T4 port, and the casing rotary switching valve (68) is connected with the casing driving motor through A6 and B6 ports, the ninth one-way valve (69) is arranged between P3 port and the casing rotary switching valve (68), and the casing rotary selection valve (610) is arranged between P4 port and the casing rotary switching valve (68).

2. The electrically controlled positive flow multi-mode control system for a deep well rig of claim 1, wherein, The control system includes five operation modes: normal mode, main lifting mode, main rotary mode and casing mode; In the normal mode, according to the signal of the operation handle, the rotation of the top drive motor and the extension and retraction of the top drive cylinder are independently or complexly controlled by the electric control pump; In the main lifting mode, according to the signal of the operation handle, the extension and retraction of the top drive cylinder are preferentially controlled by the electric control pump, and the rotation of the top drive motor is allowed; In the main rotary mode, the rotation of the top drive motor is preferentially controlled by the electric control pump, and the extension and retraction of the top drive cylinder are allowed; In the casing mode, the rotation of the top drive motor, the extension and retraction of the top drive cylinder, the rotation of the casing driving motor and the extension and retraction of the casing driving cylinder are simultaneously controlled by the electric control pump, and these actions can be executed independently or in combination.

3. The electrically controlled positive flow multi-mode control system for a deep well rig of claim 1, wherein, The system further includes a tripping mode, in which the extension and retraction speed of the top drive cylinder is lifted by the first flow regenerative switching valve and the second flow regenerative switching valve.

4. The electrically controlled positive flow multi-mode control system for a deep well rig of claim 1, wherein, In the casing mode, at least one of the normal mode, the main lifting mode or the main rotary mode can be synchronously opened.

5. The electrically controlled positive flow multi-mode control system for a deep well rig of claim 3, wherein, The tripping mode can be simultaneously opened with any other mode.

6. The electrically controlled positive flow multi-mode control system for a deep well rig of claim 1, wherein, In any mode, the system allows stepless adjustment of the flow and maximum pressure supplied to the currently executed action.

7. A drilling rig comprising the deep well drilling electric control positive flow multi-mode control system according to any one of claims 1-6.

Images