Drilling mud primary purification system

Abstract

The invention discloses a first-grade drilling mud purification system. A casing of the system is rectangular; a buffer tank is vertically arranged in a corner on one side of the casing; mud overflow tanks are formed in the part, on one side surface of the buffer tank, in the casing; the buffer tank is communicated with the bottom surface of the mud overflow tanks; filter nets are horizontally arranged in middles of the mud overflow tanks; a packing auger device is horizontally arranged in the buffer tank and the bottoms of the mud overflow tanks; stirring blades distributed spirally are uniformly arranged on a packing auger rotary shaft, close to the buffer tank, of the packing auger device at intervals; spiral packing augers are arranged on the packing auger rotary shaft close to the other end of the packing auger device; a plurality of overflow pipes are horizontally arranged on one side surface of the upper part of each mud overflow tank at intervals and perpendicular to the packing auger rotary shaft; vibration sieves are arranged below openings in front walls of the overflow pipes respectively; purified mud output pipelines are arranged on bottom surfaces of the vibration sieves; a packing auger device is arranged in the casing below material outlet ends on one side of the vibration sieves; the two packing auger devices are identical in structure; rock debris outlets are formed in positions, at tail ends of the two packing auger devices, of the casing.

Description

technical field [0001] The invention belongs to the field of petroleum drilling and relates to a primary purification system for drilling mud. Background technique [0002] During oil drilling operations, the drilling mud solid phase control system separates the drilling mud with a large amount of cuttings returned from the bottom of the well into liquid phase and solid phase, in which the liquid phase continues to participate in the drilling fluid circulation, and the solid phase is discharged as waste . Solid phase waste is mainly separated from rock debris by vibrating screens, sand and desilter, and centrifuges, and these rock chips contain a lot of water and oil. The traditional method is to dig a large mud pool to hold cuttings and mud. Due to the extensive use of chemical treatment agents in the drilling process, the drilling waste mud presents the characteristics of complexity and variability, and the pollution of the surrounding environmental soil, surface water a...

AI Technical Summary

Problems solved by technology

Looking at the situation of these complete sets of equipment in the drilling team's implementation of "drilling mud does not fall to the ground", the following defects generally exist: 1. The processing capacity cannot meet the requirements of the drilling team

In this case, the processing capacity of the service provider's complete equipment cannot meet the drilling team's high drilling speed, large displacement, and high viscosity drilling process requirements

2. Greatly increased drilling costs

3. It covers a large area, resulting in high land acquisition costs and landform restoration costs

Since the complete sets of equipment provided by the service provider are many and complex, and the treated water and cuttings still need to occupy the site, the well site is expanded and the cost is increased.

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