Automatic sliding well drilling control device

Abstract

The invention relates to an automatic sliding well drilling control device, and belongs to the technical field of oil drilling tool design. The automatic sliding well drilling control device is characterized by being composed of a guiding tool face angle sensor (1), a toque sensor (2), a drilling fluid pressure sensor (3), a programmable processor (4), a user input device (5), a video output displayer (6) and a drill column rotating controller (7). The programmable processor (4) is used for receiving output signals form the guiding tool face angle sensor (1), the toque sensor (2) and the drilling fluid pressure sensor (3), the output signals is processed by the programmable processor (4) and the received information and a processing result are displayed on the video output displayer (6). After the programmable processor (4) processes the received information, the programmable processor (4) outputs a control instruction to the drill column rotating controller (7) and controls the drill column rotating controller (7). According to the automatic sliding well drilling control device, a tool face can be modified and oriented fast and accurately, the conversion between the sliding and the rotating drilling is fast, the drilling ability in a horizontal section is enhanced, and the automatic sliding well drilling control device has the advantages that mechanical drilling speed is increased, well track quality is improved, and the service life of a motor under a well is prolonged.

Description

Technical field: [0001] The invention relates to an automatic sliding drilling control device, which belongs to the technical field of oil drilling tool design. Background technique: [0002] Rotary steerable drilling technology and motor / measurement-while-drilling technology are commonly used tools in directional drilling. Due to the high cost of rotary steerable tools and the requirements for wellbore size, they are not economically feasible; The measurement-while-drilling system includes a downhole motor and a motor bending casing. During the sliding drilling process, the drill string does not rotate, but slides along the axial direction of the well wall, and the wellbore trajectory is positioned by bending the casing section. Therefore, During the drilling process, there are problems such as low wellbore purification efficiency, large friction when the pipe string is advanced, and the steerable motor is easy to stall. As a result, the ROP of the steerable motor sliding d...

AI Technical Summary

Problems solved by technology

[0002] Rotary steerable drilling technology and motor / measurement-while-drilling technology are commonly used tools in directional drilling. Due to the high cost of rotary steerable tools and the requirements for borehole size, they are not economically feasible; and motor / The measurement-while-drilling system includes a downhole motor and a motor bending casing. During the sliding drilling process, the drill string does not rotate, but slides along the axial direction of the well wall, and the wellbore trajectory is positioned by bending the casing joints. Therefore, During the drilling process, there are problems such as low wellbore purification efficiency, high friction when the pipe string advances, and easy stalling of the steering motor, which leads to the ROP of sliding drilling with the steering motor being much lower than that of rotary drilling, which is far from meeting the needs of oil drilling sites. the actual needs of

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