Sealed vibration screen for pipe chain chip removal

Abstract

The invention relates to a sealed vibration screen for pipe chain chip removal. The closed vibration screen mainly comprises two parts including a vibration screen body and a sealing device; the vibration screen body is composed of a buffer tank, a screen frame, an upper-layer screen net, vibration excitation motors, a lower-layer screen net, a base and vibration reduction springs; the sealing device is composed of a feeding-end upper sealing cover, a jet pump, an elastic sealing device body, a discharging-end upper sealing cover, an outlet sealing cover, a pipe chain chip removal device, a liquid sealing baffle and an underflow emptying valve; the vibration screen body is arranged in the sealing device, the feeding-end upper sealing cover and the discharging-end upper sealing cover are arranged above the screen frame, and the elastic sealing device body is installed between the screen frame and the feeding-end and discharging-end upper sealing covers; the liquid sealing baffle is arranged at the left side of the base, and an S-shaped pipe formed in the portion, in the base, of the liquid sealing baffle prevents hydrogen sulfide from leaking; the pipe chain chip removal device is installed at the discharging portion of the screen frame and can continuously and efficiently remove rock chip particles, the jet pump is installed on the feeding-end upper sealing cover, and the hydrogen sulfide is recycled through the jet pump. The sealed vibration screen is simple in structure and high in safety, the screening efficiency requirement of the vibration screen can be met, the rock chips are timely removed, the hydrogen sulfide is effectively controlled and recycled, and the effect is obvious.

Description

technical field [0001] The invention belongs to a drilling fluid processing device for petroleum drilling technology, and in particular relates to a closed vibrating screen for pipe chain debris removal, which is suitable for the field of drilling operations in high-sulfur oil and gas fields. Background technique [0002] The vibrating screen is the first-level solid control equipment of the drilling fluid purification system. It is responsible for removing the cuttings carried in the drilling fluid and separating harmful solid particles. The quality of its work directly determines the treatment effect and use of subsequent solid control equipment. Therefore, the vibrating screen It occupies an incomparable position in the solid control purification system. [0003] With the further deepening of oil and gas development, hydrogen sulfide and other gases are found in the deep gas layers of oil and gas fields. These high-sulfur oil and gas fields have the characteristics of com...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patents have solved the safety hazard of hydrogen sulfide leakage to a certain extent, but the technology still has the following defects: 1. The sealing effect of the existing device is not ideal and the reliability is not high. On the other hand, the sealing of the spiral chip conveyor is poor, and it is easy to leak hydrogen sulfide gas

2. The spiral chip conveyor is basically a horizontal spiral mechanism, which occupies a large space and has limited transmission efficiency, and is especially not suitable for the transportation of chip materials.

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