Top drive control system of hydraulic drive

A technology of control system and top drive, which is applied to the automatic control system of drilling, drilling equipment and methods, construction, etc., and can solve the problems of blank hydraulic top drive

Active Publication Date: 2015-02-25
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0002] With the mature application of top drive technology in drilling engineering, hydraulic top drive has also achieved considerable development due to its advantages of safe and reliable operation, low cost, and small structure. Hydraulic top drive has been used for decades abroad, but in China In recent years, the hydraulic top drive for shallow wells (below 3000m) has just been successfully developed, and the hydraulic top drive for deep wells is still blank

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  • Top drive control system of hydraulic drive

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Embodiment Construction

[0008] As shown in the drawings, a hydraulically driven top drive control system includes a control pump 1, a control handle 2, a motor 10 and a variable pump 18; the outlet of the variable pump 18 is connected to the inlet of the hydraulic control proportional reversing valve 5, and the hydraulic The two outlets of the proportional control valve 5 are respectively connected to the two working oil ports of the motor 10 through the check valve II6 and the check valve V14; the outlet of the control pump 1 is connected to the inlet of the control handle 2, and the two ports of the control handle 2 The two outlets are connected to the two control ports of the hydraulic control proportional reversing valve 5, and are also connected to the two inlets of the shuttle valve I3; the outlet of the shuttle valve I3 is connected to the control port of the hydraulic control reversing valve II15, and the hydraulic control reversing valve The inlet of the direction valve II15 is connected with...

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Abstract

The invention relates to the technical field of hydraulic control, in particular to a top drive control system of a hydraulic drive of an automatic drilling machine. An outlet of a variable pump of the system is connected with an inlet of a hydraulic control proportional directional valve; two outlets of the hydraulic control proportional directional valve are respectively connected with two working oil ports of a motor through a one-way valve II and a one-way valve V; the outlet of a control pump is connected with the inlet of a control handle; two outlets of the control handle are connected on two control ports of the hydraulic control proportional directional valve, and synchronously connected on two inlets of a shuttle valve I; the outlet of the shuttle valve I is connected with a control port of a hydraulic control directional valve II; the inlet of the hydraulic control directional valve II is connected with the control port of the variable pump, and the outlet of the of the hydraulic control directional valve II is connected with the outlet of the shuttle valve II; two inlets of the shuttle valve II are connected with the two working oil ports of the motor. According to the top drive control system, the implementation and application of the hydraulic top drive technique of the deep well are achieved; in this way, the defects of blank of the hydraulic top drive technique of the existing deep well are overcome.

Description

Technical field: [0001] The invention relates to the technical field of hydraulic control, in particular to a hydraulically driven top drive control system of an automatic drilling rig. Background technique: [0002] With the mature application of top drive technology in drilling engineering, hydraulic top drive has also achieved considerable development due to its advantages of safe and reliable operation, low cost, and small structure. Hydraulic top drive has been used for decades abroad, but in China In recent years, the hydraulic top drive for shallow wells (below 3000m) has just been successfully developed, and the hydraulic top drive for deep wells is still blank. Invention content: [0003] The technical problem to be solved by the present invention is to provide a hydraulically driven top drive control system, which realizes the implementation and application of the deep well hydraulic top drive technology. The problem that the existing deep well hydraulic top dri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B44/00E21B3/02
Inventor 王小权张延忠赵蕴国史楠楠汤斌李文彪吴敌丁斌
Owner BC P INC CHINA NAT PETROLEUM CORP
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