Anti-blocking drill rod

Abstract

The invention relates to an anti-blocking drill pipe, which includes a drill pipe body, a drill pipe shell and a drill bit; wherein the bottom outer wall of the drill pipe shell is provided with an annular groove, and an annular drainage plate is arranged outside the annular groove. There is a connection port on the top of the casing, and a mounting hole is provided at the bottom of the drill pipe casing. The connection port and the mounting hole are connected through a separation hole, and the separation hole is separated into an oil-water separation groove and an oil discharge groove by a separation plate; There is a water injection flow path connected to the oil-water separation tank and an oil discharge flow path connected to the oil discharge groove, and a pressurized water flow path connected to the annular groove on the drainage side wall and the oil-water separation groove is also provided inside the drill pipe shell; The inside of the drill pipe body is provided with a suction hole for sucking oil, the end of the drill bit is provided with an oil inlet nozzle, and a number of drain outlets are arranged on the drill bit, and the drain outlets are located at the cutting edge of the drill bit. The drain flow path communicated with the drain port, and the other end of the drain flow path communicates with the oil-water separation tank.

Description

technical field [0001] The invention relates to oil drilling equipment, in particular to an anti-blocking drill pipe. Background technique [0002] As a kind of rock formation drilling equipment, oil drill pipe not only needs to penetrate the rock formation, but also needs to discharge oil and groundwater through the hole in the middle of the oil drill pipe, and at the same time, it will also be accompanied by more powder and gravel produced by rock formation grinding. It is easy to cause the blockage of the oil extraction hole and the water extraction hole arranged in the drill pipe, so that the end of the drill pipe cannot be discharged, which affects the normal operation of the drill pipe. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the technical problem that the drill pipe is easy to be blocked in the prior art, and provide an anti-blocking drill pipe. [0004] The technical solution adopted by the pres...

AI Technical Summary

Problems solved by technology

[0002] As a kind of rock formation drilling equipment, oil drill pipe not only needs to penetrate the rock formation, but also needs to discharge oil and groundwater through the hole in the middle of the oil drill pipe, and at the same time, it will also be accompanied by more powder and gravel produced by rock formation grinding. It is easy to cause blockage of the oil extraction hole and water extraction hole set in the drill pipe, making the end of the drill pipe unable to discharge pressure and affecting the normal operation of the drill pipe

Images