TH21175A - Turnable drilling with bottom drilling motor - Google Patents

Abstract

This method is intended for the construction of boreholes in the soil. Using a drill assembly which It consists of a long string of drilling holes into a well. Bottom drilling motor with packing And drive shaft for rotating the drilling blade Where the drive shaft has a relative tilt direction with Long axis of the lower part of the drill line The motor holder is connected to the lower part of the drill line in such a way that the motor container can be rotated along a long axis. And drilling assembly Contains control equipment To control the rotation of the motor container along that long axis and relative to the drill line. This involves drilling a very straight part of the hole. Drilling such The control device is induced to continuously rotate the motor container along the said long axis. And relative to the drill line While the bottom drilling motor Work of rotating the drilling blade

Claims (8)

1. How to build a borehole in the soil layer By using a drill assembly consisting of a drill string that Long into the borehole Bottom drilling motor with packing And the drive shaft for rotating the drill blade, where the drive shaft has a relative inclination direction to the long axis of the lower part of the drill line. Container of connected motor With the lower part of the piercing line In such a way that the motor load can be rotated around a long axis, and the drilling assembly also includes a control device To control the rotation of the motor container around that long axis and relative to the drill line. This method consists of drilling a very straight part of the well by inducing the control device to continuously rotate the motor container around the long axis and relative to the drill line. While the bottom drilling motor is working, rotate the drilling blade. The process of drilling the very straight part of the well will alternate with the next step of the Drilling the arc of the said well By inducing such control devices To prevent Rotate the motor load around that long axis. And relative to the drill line While the bottom drilling motor Work of rotating the drilling blade With unique characteristics Before the arc drilling process Loud control device It is said to be induced to rotate the motor container. It is the angle corresponding to the chosen direction of the drill blade relative to the drill hole approximately. 2. Method according to claim 1, where such control equipment does not include control equipment The rotation of the motor container around the long axis And relative to the drill line Which rotation is caused by the feedback torque acting on the motor container Due to the rebound torque of the drill blade rotation in the drilling hole. 3. Means according to claim 1 or 2, where the said control device includes One of the groups of hydraulic motors and electric motors. 4. Method according to one of the claims 1 to 3, the aforementioned drill line is in the form of a coiled pipe. Roll Where the coil is released from the coil And into the borehole While the drilling of the well is progressing 5.Drilling assembly for creating wells to dig holes in the soil. Which consists of a long piercing cord Go in the borehole Bottom drilling motor with packing And drive shaft for rotating the drilling blade Which the drive shaft has Determination of the relative inclination direction to the long axis of the lower part of the drill line. Motor container connected to the part Bottom of the piercing line In such a way that the motor load can be rotated around a long axis And assembly kit The drill also includes a control device to control the rotation of the motor container around that long axis. And relative to the drill line And equipment for drilling very straight parts of the well by inducing the control device to continuously rotate the motor container. Around such a long axis and relative to the drill line, while the bottom drilling motor works, rotating the drilling blade. And equipment for switching procedures Drill a very straight part of the well with the arc process of the well by induction of a control device. To prevent rotation, the motor load around the aforementioned long axis and relative to the drill line. While the bottom drilling motor is working, rotate the drilling blade. With unique characteristics Before drilling the induction arc, such a control device is rotated the motor container to The angle corresponding to the chosen direction of the drill blade. Relative to the well, approximately 6. Drilling assembly according to claim 5, where the control device does not include equipment For controlling the rotation of the motor container around such a long axis And relative to the drill line, which the rotation is caused by the feedback torque Acting on the motor container Due to the feedback torque of the blade rotation Drilling knives in the drilling holes 7. Drill assembly according to claim 5 or 6, where the control device includes one of the groups of hydraulic motors. And electric motor 8. Drilling assembly according to any claim 5 to 7, where the drill line forms a coiled tube on a coil. And an assembly consisting of a device for loosening the coiled tubing from the coil and dropping the coiled tube into the borehole. While the drilling of the well is progressing