Single-side rotational flow speed-increasing tool for drilling fluid of deep well drilling bottom

Abstract

The invention relates to a single-side rotational flow speed-increasing tool for drilling fluid of the deep well drilling bottom. The single-side rotational flow speed-increasing tool is mainly composed of a liquid inlet, supporting rods, a helical impeller, V-shaped grooves, solid discharging injection ports and a liquid outlet. According to the tool, the problems of high density of the drilling fluid of the deep well drilling bottom, the serious pressure holding effect and the low mechanical drilling speed are solved. The concrete implementation process of the single-side rotational flow speed-increasing tool for the drilling fluid of the deep well drilling bottom comprises the following steps that when the drilling fluid flowing from top to bottom flows through the single-side rotational flow speed-increasing tool for the drilling fluid of the deep well drilling bottom, part of the drilling fluid directly flows out from the space out of the single-side rotational flow speed-increasing tool for the drilling fluid of the deep well drilling bottom, and the other part of the drilling fluid flows into the single-side rotational flow speed-increasing tool for the drilling fluid of the deep well drilling bottom from the liquid inlet. The high-pressure and high-speed drilling fluid impacts the helical impeller of the single-side rotational flow speed-increasing tool for the drilling fluid of the deep well drilling bottom to rotate in high speed, the helical impeller rotatably transports solid particles in the drilling fluid into the V-shaped grooves, and after collected the by the V-shaped grooves, the separated solid particles are injected out of drilling rods from the two upper and lower solid discharging injection ports. The tool can effectively reduce the pressure holding effect in the deep well bottom, the mechanical drilling speed is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to a single-side swirling speed-increasing tool for drilling fluid at the bottom of deep well drilling, which belongs to a supporting device for oil and natural gas drilling, and in particular can reduce the density of drilling fluid at the bottom of deep well drilling, reduce drill bit wear, increase drilling speed, and prolong the life of the drill bit. Background technique [0002] With the reduction of shallow oil and gas resources in the world, oil and gas exploration and development are gradually shifting to deep wells. The speed of drilling in deep formations directly affects the economic benefits of oil and gas exploration and development. However, deep drilling is subject to high formation pressure and requires a high density of drilling fluid. High-density drilling fluid greatly affects the speed of penetration. Urgent problems. [0003] As the drilling process continues and the drilling depth continues to increase, it ...

AI Technical Summary

Problems solved by technology

The main reason is that the bottom hole pressure difference has a holding effect on the newly broken cuttings, which hinders the timely removal of bottom hole cuttings, affects the rock breaking efficiency of the drill bit, reduces the ROP, and intensifies the wear of the drill bit

Images