An Intelligent Variable Diameter Stabilizer
A stabilizer and variable technology, applied in the direction of drill pipe, casing, drill pipe, etc., can solve the problems of low reliability, complicated operation, complex structure, etc., and achieve the goal of improving drilling efficiency, simple control operation and high control precision Effect
Active Publication Date: 2022-04-26
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
There are purely mechanical, mechanical-hydraulic and electromechanical-hydraulic integrated structures for variable-diameter stabilizers. The existing variable-diameter stabilizers are mainly based on mechanical force or hydraulic force for variable diameter operation, and the operation is complicated. The control signals usually use mud pulses, electromagnetic waves, Transmission by means of sound waves, etc., the transmission speed is slow and the reliability is low
The existing variable-diameter stabilizers have problems such as low efficiency, slow signal transmission speed, variable-diameter structure dependent on drilling fluid, and complex structure.
Method used
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Embodiment Construction
[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] Such as figure 1 and figure 2 As shown, the left end of the motor shaft (3) in the intelligent variable-diameter stabilizer is fixedly connected with the housing (2), the hollow motor shaft (3) passes through the hollow motor (5), and the inside can pass through the drilling fluid, and the motor shaft ( 3) The right side and the casing (2) are sealed by the drill pipe sealing ring (17) to prevent hydraulic oil leakage in the hydraulic chamber; the motor shaft (3) is provided with a balance pressure through hole (8) to balance the inner and outer pressures , the motor (5) is fixedly connected with the piston rod (7), the piston rod (7) and the annular piston (10), and the motor (5) drives the piston rod (7) and the annular piston (10) to move to the right during operation Compress the hydraulic oil to further push the diameter reducing mechanism to achieve dia...
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The invention discloses an intelligent variable-diameter stabilizer, which is characterized in that: an intelligent variable-diameter stabilizer includes a cable (1), a casing (2), a power module, a variable-diameter module, and an intelligent control module, wherein The power module includes a motor shaft (3), a motor (5), a piston rod (7), and an annular piston (10), and the reducing module includes a push block (13), an elastic body (16), and an outer sealing ring (12) , inner sealing ring (14), pushing steel ball (19), spring contact finger (20), locking steel ring (21), intelligent control module including cable (1), solenoid valve (11), control module (9 ); during the working process, the variable diameter module is driven by the power module to realize the variable diameter, and the intelligent control module realizes signal transmission and precisely controls the variable diameter; the present invention adopts an electromechanical-hydraulic integrated structure with a simple structure, and can realize the variable diameter under the state of non-stop drilling. The real-time transmission signal realizes high-efficiency transmission, and the variable diameter is not limited by the displacement and size of drilling fluid.
Description
technical field [0001] The invention relates to the field of petroleum drilling machinery, in particular to an intelligent variable-diameter stabilizer. Background technique [0002] With the increasing difficulty of oil field development and the rapid development of drilling technology, it has become a trend to use directional wells, horizontal wells and extended reach wells for oil and gas field exploration and development. The variable diameter stabilizer is a key tool in the wellbore trajectory control technology for horizontal wells and extended reach wells. During drilling, it can reduce the number of trips, increase the rate of penetration, and reduce drilling costs. There are purely mechanical, mechanical-hydraulic and electromechanical-hydraulic integrated structures for variable-diameter stabilizers. The existing variable-diameter stabilizers are mainly based on mechanical force or hydraulic force for variable diameter operation, and the operation is complicated. T...
Claims
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IPC IPC(8): E21B17/10
CPCE21B17/1078
Inventor 肖仕红岳琳琳刘仕华周士超何先友张靖柯
Owner SOUTHWEST PETROLEUM UNIV