Self-balancing drilling and pulling-out mechanism with real-time bit pressure monitoring function

Abstract

A self-balancing drilling and pulling-out mechanism with a real-time bit pressure monitoring function comprises a first-stage fixed machine body, a second-stage oil cylinder feeding machine body and a power head supporting plate. The second-stage oil cylinder feeding machine body is arranged on the first-stage fixed machine body through an oil cylinder in a telescopic mode. The second-stage oil cylinder feeding machine body comprises a machine body part located between hollow square steel on the two sides. The upper end of the machine body part is connected to the free end of an oil cylinder telescopic rod in the first-stage fixed machine body through a cross beam. The power head supporting plate is located on the front side of the first-stage fixed machine body, and is connected to the first-stage fixed machine body after an upper self-balancing mechanism and a lower self-balancing mechanism wind around the upper end and the lower end of the second-stage oil cylinder feeding machine body correspondingly. Vertical motion of the power head supporting plate is achieved through vertical movement of the second-stage oil cylinder feeding machine body. Due to the facts that the self-balancing drilling and pulling-out mechanism is simple in structure, convenient to operate and capable of improving the pulling-out force and conducting real-time monitoring, the self-balancing drilling and pulling-out mechanism has practicability and applicability.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a self-balancing drilling and pulling mechanism with the function of real-time monitoring of drilling pressure. Background technique [0002] During the drilling construction process, the drilling rig mainly has two working conditions: drilling and pulling out. [0003] During the drilling and pulling out process, the drilling pressure of the drilling rig is one of the most important drilling process parameters. During the drilling and pulling out process, the drilling pressure of the drilling rig has a great influence on the drilling construction effect, drilling efficiency and drilling quality. Real-time and accurate monitoring of WOB is required during drilling and pulling out. At present, the drilling pressure of the full hydraulic drilling rig is not directly measured, but is generally calculated indirectly by measuring the pressure of the two oil ports of the do...

AI Technical Summary

Problems solved by technology

To further increase the pull-out force of the drilling rig, either increase the number of steel wire ropes or increase the cross-sectional area of ​​the steel wire ropes, which will lead to a complex overall structure of the drilling rig and an increase in cost. In addition, each steel wire rope is affected by elastic deformation and assembly errors. It is difficult to precisely control the length. The more the wire ropes are, the greater the cumulative error will be, which seriously restricts the further improvement of the drilling rig capacity.

Images