Torque balance downhole power drilling tool
A technology of torque balance and dynamic drilling tools, which is applied in the direction of driving devices, drill bits, drilling equipment, etc. for drilling in boreholes, and can solve problems such as buckling and instability, drill string instability, and poor borehole trajectory
Active Publication Date: 2020-12-11
YIBIN UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The rotary motion of the drill bit is usually transmitted through the drill pipe. As the drilling depth increases, the stiffness of the entire drill string will decrease, which increases the risk of buckling and instability of the drill pipe under the action of torque and drilling pressure during the process. , especially in the drilling of directional wells and horizontal wells, the drill pipe is in contact with the well wall, which increases the friction between the drill string and the well wall, and requires greater drilling pressure to overcome the friction between the two The force makes the drill string more prone to instability, resulting in low drilling efficiency and poor well trajectory. Therefore, there is an urgent need for a downhole tool to reduce the torque on the drill string
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] Such as figure 1 As shown, the device of the present invention includes a motor head 01, an upper screw motor assembly 02, a lower screw motor assembly 03, a torque balance assembly 04 and a drill bit assembly 05. The left end of the motor head 01 is connected to the drill string, and the motor head The right end of 01 is connected with the upper screw motor assembly 02, the left end of the lower screw motor assembly 03 is connected with the upper screw motor assembly 02, the right end is connected with the torque balance assembly 04, and the drill bit assembly 05 is connected with the torque balance assembly 04.
[0029] Such as figure 2 As shown, the motor head 01 is composed of an upper joint 011 and a bypass valve 012. The bypass valve 012 ensures that the passage between the interior of the pipe string and the annulus is formed during the small flow rate and the process of pulling up the pipe string.
[0030] Such as image 3 As shown, the upper screw motor asse...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a torque balance underground power drilling tool. The drilling tool comprises a motor head, an upper screw motor assembly, a lower screw motor assembly, a torque balance assembly and a drill bit assembly. According to the drilling tool, torque of an upper screw motor and torque of a lower screw motor are output through the torque balance assembly, drill bits are driven tobreak rock, and therefore the torque borne by drill strings is balanced according to different rotating directions of the torque.
Description
technical field [0001] The invention relates to a torque balance downhole dynamic drilling tool used in the drilling process of oil and gas reservoir development. Background technique [0002] During the drilling and development of oil and gas fields, the rotary motion of the drill bit is required to destroy the formation to form a channel from the surface to the target reservoir. The rotary motion of the drill bit is usually transmitted through the drill pipe. As the drilling depth increases, the stiffness of the entire drill string will decrease, which increases the risk of buckling and instability of the drill pipe under the action of torque and drilling pressure during the process. , especially in the drilling of directional wells and horizontal wells, the drill pipe is in contact with the well wall, which increases the friction between the drill string and the well wall, and requires greater drilling pressure to overcome the friction between the two Therefore, there is...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/04E21B10/26E21B10/42
CPCE21B4/04E21B10/26E21B10/42E21B4/003
Inventor 朱兆亮蒋易强闫有喜
Owner YIBIN UNIV