Electric Variable Diameter Stabilizer
A stabilizer and electric technology, which is applied in the direction of drilling equipment, earthwork drilling, drill pipe, etc., can solve the problems of auxiliary judgment, inability to judge the state, and the inability to adopt multiple control times, etc., to achieve simple structure and low power Effect
Active Publication Date: 2018-08-14
INST OF SINOPEC OILFIELD EQUIP CORP +1
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AI Technical Summary
Problems solved by technology
There is a problem with this type of variable diameter stabilizer. Its state in the well cannot be judged, and multiple control times cannot be used to assist judgment.
Method used
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[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0030] It should be noted that, in the description of the present invention, the terms "horizontal", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, or operate in a particular orientation, and thus should not be construed as limiting the invention.
[0031]Such as figure 1 , figure 2 , image 3 , Figure 4 As...
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The invention provides an electric tapered stabilizer which comprises a shell and a torque motor, wherein a central tube is coaxially arranged in the shell; at least one round tube shaped wedge capable of moving up and down along an axis of the central tube sleeves the central tube; at least one first inclined plane closing to an axis of each of the wedges is arranged on the outer peripheral surface of each of the wedges along the peripheral direction; a mounting hole is formed in the side wall of each of the first inclined planes, which corresponds to the shell; a piston is arranged in each of the mounting holes; a second inclined plane laminated with the first inclined plane is arranged on the side wall of each of the piston, which corresponds to each of the first inclined planes; each of the pistons can move in the radial direction along each of the mounting holes; an external thread is arranged at the lower end of a rotor of the torque motor; the lower end of the rotor stretches into a driving nut with an internal thread; the driving nut sleeves the central tube and the lower end of the driving nut is propped against the upper end of each of the wedges; the rotor is in threaded driving with the driving nut; and the rotor rotates to drive the driving nut to axially move. The electric tapered stabilizer is controlled remotely on the ground to realize diameter changing, so that the condition that a drilling process is continuous, safe and reliable can be ensured.
Description
technical field [0001] The invention belongs to a downhole tool in oil drilling operations, and in particular relates to an electric variable-diameter stabilizer in the field of oil drilling. Background technique [0002] In the drilling process of directional wells, horizontal wells and extended-reach wells, in order to ensure that the actual drilling trajectory meets the requirements of the designed wellbore trajectory, conventional stabilizers are often used. When the actual wellbore trajectory needs to be adjusted, frequent tripping Drilling to change the BHA. Tripping out to change the drill tool assembly results in increased costs, long drilling cycle, and easy to cause resistance and sticking. [0003] In order to overcome the above-mentioned shortcomings, there are mainly three types of variable diameter stabilizers developed and used: electromechanical-hydraulic integrated type, drilling pressure type and mechanical-hydraulic type. Among them, the electromechanica...
Claims
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IPC IPC(8): E21B17/10
CPCE21B17/1014E21B17/1078
Inventor 钱伟强潘灵永宋满华吴刚
Owner INST OF SINOPEC OILFIELD EQUIP CORP