Oil and gas field drilling mud waste treatment system

Abstract

The invention discloses a treatment system for drilling mud wastes of an oil and gas field. The treatment system comprises a base, wherein the base is sequentially provided with a coal powder cabin, a material cabin, a combustion room, a dust removing purifier and a tail gas purification tower, wherein an outlet of the coal powder cabin is connected with a coal powder inlet of the combustion room through a coal powder conveying pipeline; the outlet of the material cabin is connected with a material inlet of the combustion room through a material conveying pipeline; a gas outlet of the combustion room is connected with a gas inlet of the dust removing purifier; a draught fan is arranged between the dust removing purifier and the tail gas purification tower; a gas outlet of the dust removing purifier is connected with the gas inlet of the draught fan; the gas outlet of the draught fan is connected with the gas inlet of the tail gas purification tower; and an up-to-standard gas exhausting hole is formed in the upper part of the tail gas purification tower. The treatment system disclosed by the invention has the advantages of high treatment efficiency, good stability, simplicity in operation, small occupied area and convenience for transportation; and the treatment system can be in complete butt joint with drilling mud waste production equipment, so that the mud wastes completely do not fall onto the ground, and furthermore, the ambient environment of drilling operation is protected, and national emission standards are met.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field drilling waste treatment, and in particular relates to a treatment system for oil and gas field drilling mud waste. Background technique [0002] Drilling mud waste is an extremely complex dispersion system, which is a mixture of drilling sewage, drilling mud and cuttings. Drilling mud waste is a fairly stable colloidal suspension system, containing clay, weighted materials, various chemical treatment agents, sewage, oil-free and drilling cuttings, etc. Among them, the main chemical components that are harmful to the environment are hydrocarbons and salts , various polymers, heavy metal ions, impurities in barite and asphalt and other modified substances. These pollutants have the characteristics of high chroma, high petroleum, high chemical oxygen demand, high suspended solids, and high salinity, and are the main pollutants produced in the process of petroleum exploration and developme...

AI Technical Summary

Problems solved by technology

The amount of curing agent accounts for about 1 / 3 of the total amount of waste. The curing agents mainly include: fly ash, lime, cement, water glass, etc., which greatly increases the total amount of waste and processing costs; more serious The most important thing is that the leaching solution of waste after burial will still cause serious pollution to groundwater.

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