Environment-friendly drilling fluid integrated treatment system based on multi-stage purification

Abstract

The invention discloses an environment-friendly drilling fluid integrated treatment system based on multi-stage purification. The environment-friendly drilling fluid integrated treatment system comprises a main integrated box; the feeding primary treatment assembly vertically communicates with one side of the main integration box, and the feeding primary treatment assembly is used for primary filtering treatment of the drilling fluid, so that thin mixed turbid liquid in the drilling fluid can be filtered and discharged into the main integration box; the side filtering assembly is communicated with the feeding primary treatment assembly and is used for carrying out secondary filtering on the thick and heavy mud turbid liquid filtered in the feeding primary treatment assembly, so that residual thin mixed turbid liquid in the thick and heavy mud turbid liquid can seep out; the floating layer cleaning device is vertically arranged in the main integration box, and the floating layer cleaning device can absorb and discharge floating layer oil bodies of the thin mixed turbid liquid in time after the thin mixed turbid liquid is subjected to standing treatment; the outer spiral material conveying piece is obliquely communicated with one side of the main integration box; and the purification device is connected to the outer spiral conveying piece, and the purification device can be used for neutralizing and purifying the filtered drilling fluid.

Description

technical field [0001] The invention belongs to the technical field of drilling waste treatment equipment, in particular to an environment-friendly drilling fluid integrated treatment system based on multi-stage purification. Background technique [0002] With the continuous improvement of relevant environmental protection laws and regulations, the state has higher and higher requirements for environmental protection, and the state requires drilling operations to implement "non-landing" treatment to ensure clean production. The waste generated by drilling is not allowed to be disposed of at will, and must be disposed of reasonably and legally. The drilling waste generally adopts the mechanical solid-liquid separation of the waste first, and then chemically treats the liquid phase. After meeting the performance of the drilling fluid, it is returned to the drilling solids control system to continue drilling operations. At present, vibrating screens and centrifuges are mostly u...

AI Technical Summary

Problems solved by technology

Drilling waste is generally separated by mechanical solid-liquid separation first, and then the liquid phase is chemically treated. After meeting the properties of the drilling fluid, it is returned to the drilling solid control system to continue to participate in drilling operations. Currently, vibrating screens and centrifuges are mostly used. However, due to the complex composition of the drilling fluid, it is easy to adhere to the sieve holes during separation, resulting in internal blockage; especially in the preliminary filtration and sieving, if it cannot be cleaned regularly, it will affect the post-processing Efficiency; especially, it is difficult to centrifugally separate the suspended oil bodies in the drilling fluid, and it is also difficult for general equipment to completely screen them out

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