An electric turntable device for directional drilling and anti-backup pressure and its control method
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A technology of directional drilling and anti-support pressure, applied in the automatic control system of drilling, drilling equipment and methods, rotary drilling, etc. Effects of drilling accidents
Active Publication Date: 2020-04-10
QINGDAO JINJIANGYUAN IND EQUIP CO LTD
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Problems solved by technology
Domestic turntables have shortcomings such as inaccurate orientation, difficulty in communicating with other equipment, and low degree of automation. Although the top drive currently used has certain technical advantages, due to its high price and economic factors, the top drive is not the best for ordinary well crews. choose
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Embodiment 1
[0024] An electric turntable device for directional drilling and anti-backup pressure, including a rotational speed torque sensor (4), a frequency conversion speed regulation system (6), a turntable (2), a drill pipe (1), a measurement-while-drilling system (5) and a controller (3).
[0025] The controller (3) is electrically connected to a computer to store data. The controller (3) is also equipped with a rotary table and a drill pipe torque calculation model, using neural network (ANN) algorithm model and predictive control (MPC) Combining algorithms to control the relationship between speed and rotation angle to achieve directional drilling and reduce friction and back pressure;
[0026] The rotational speed torque sensor (4) adopts a strain gauge sensor, which is composed of an elastic shaft, a measuring bridge, an instrument amplifier, and an interface circuit. The elastic shaft is made of a material that is prone to deformation, and the slight deformation of the torque w...
Embodiment 2
[0033] An electric turntable device for directional drilling and anti-backup pressure, including a rotational speed torque sensor (4), a frequency conversion speed regulation system (6), a turntable (2), a drill pipe (1), a measurement-while-drilling system (5) and a controller (3).
[0034] The controller (3) is electrically connected to a computer to store data. The controller (3) is also equipped with a rotary table and a drill pipe torque calculation model, using neural network (ANN) algorithm model and predictive control (MPC) Combining algorithms to control the relationship between speed and rotation angle to achieve directional drilling and reduce friction and back pressure;
[0035] The rotational speed torque sensor (4) adopts a strain gauge sensor, which is composed of an elastic shaft, a measuring bridge, an instrument amplifier, and an interface circuit. The elastic shaft is made of a material that is prone to deformation, and the slight deformation of the torque w...
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Abstract
The invention relates to a directional drilling and back-pressure prevention electric rotating plate device composed of a rotating speed and torque sensor, a frequency conversion and speed regulation system, a rotating plate, a drilling rod, a measurement while drilling (MWD) system and a controller. The rotating speed and torque sensor can feed back the output torque of the rotating plate in the working process of the electric rotating plate. The torque values of the sections of the drilling rod are calculated according to a drilling rod torque calculation model and input to the controller. The speed, forward rotating, reverse rotation and the number of laps of rotation of the rotating plate are adjusted through the frequency conversion and speed regulation system. The MWD system can measure the angle of a tool face, and when the angle of the tool face is larger than a certain numerical value, rotating drilling is turned into sliding drilling, and the direction of sliding drilling is further controlled. The controller is electrically connected with a computer to store data, and communication with other equipment can be achieved. Directional drilling of the electric rotating plate can be achieved, friction resistance and back pressure are reduced, well drilling efficiency is improved, and the directional drilling and back-pressure prevention electric rotating plate device can be widely applied to the petroleum drilling industry.
Description
technical field [0001] The invention relates to an electric turntable device for directional drilling and anti-back pressure and a control method thereof, which can be widely used in the oil drilling industry. Background technique [0002] At present, in my country's oil exploration and exploitation, the rotary drilling method is widely used. The turntable is the key equipment of the current rotary drilling rig, and it is also one of the three major working machines of the drilling rig. During the drilling process, the rotary table plays the role of rotating the drilling tool, supporting the weight of all the drilling tools for drilling, and completing the loading and unloading of the drill pipe and the tightness of the pipe. Domestic turntables have shortcomings such as inaccurate orientation, difficulty in communicating with other equipment, and low degree of automation. Although the top drive currently used has certain technical advantages, due to its high price and econ...
Claims
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