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Method for comprehensive treatment of oilfield waste

A technology for comprehensive treatment of oilfield waste, applied in the field of comprehensive treatment of drilling waste, can solve problems such as solidification treatment that does not meet environmental protection requirements, achieve the effects of reducing treatment costs, large treatment capacity, and solving pollution problems

Active Publication Date: 2013-01-02
RUIJIE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for comprehensive treatment of oilfield waste, which mainly solves the problem that the solidification treatment adopted by the existing oilfield waste does not meet the requirements of environmental protection

Method used

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  • Method for comprehensive treatment of oilfield waste

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Effect test

Embodiment 1

[0024] Example 1, see Figure 1, after recovering the drilling waste from the oilfield waste, it first enters the cleaning and separation system, and after mixing with water in the cleaning and separation system at a volume ratio of 1:3, a separating agent with a volume of 20% of the mixture is added, After circulating and stirring in the tank, the solid phase screened by the vibrating screen is transported to the mixing and curing system by the screw conveyor at the lower part of the vibrating screen, and the solid phase is mixed with bitter soil in a weight ratio of 2:1:1 Powder, lime and ferrous sulfate are mixed, and the solid phase material with a certain strength is output by the lower belt conveyor, which can be used as building material raw materials. The solid phase solidified after mixing and mixing has been tested to meet the national emission standards; screening by vibrating sieve After the liquid phase enters the lower buffer tank, it is pumped to the conditioning ...

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Abstract

The invention discloses a method for comprehensive treatment of oilfield waste, which is characterized by comprising the process steps of cleaning and separation, ultrasonic separation, tempering and destabilization, oil-water separation, centrifugal separation, mixed curing, air floatation separation, adsorption filtration, flocculating settling, oxidization electrolysis, deep purification and permeable filtration. Thus, the oilfield waste is treated and utilized in a classified manner, so that sump oil is recovered, the solid phase achieves the discharge standard of oilfield sludge treatment design specifications (SY / T6851-2012) or is reutilized for construction material manufacturing, and the liquid phase achieves the sewage comprehensive discharge standard (GB8978-1996) after being subjected to water treatment.

Description

technical field [0001] The invention relates to the treatment and utilization technology of oilfield waste, in particular to a process technology for comprehensive treatment of drilling waste. Background technique [0002] During the process of oilfield exploration, development, and drilling, a large amount of mixture formed by drilling cuttings, mud, sewage, and dirty oil-drilling waste and oily waste is produced. The traditional disposal method is to discharge it into the mud sewage pool at the well site. The in-situ treatment method is solidification treatment to reduce its pollution hazard; there are long-term pollution hidden dangers due to the leakage and overflow of the mud sewage storage tank; the sludge produced by the waste drilling fluid treatment has been listed as hazardous waste at present, and the waste category is HW08 , waste code 071-002-08. In the face of stricter environmental protection standards, comprehensive treatment of oilfield waste is imperative;...

Claims

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Application Information

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IPC IPC(8): C02F9/08B09B3/00C02F1/36C02F1/40C02F1/38C02F1/24C02F1/28C02F1/52C02F1/461C02F1/72C02F1/66
Inventor 孙庆伦陈开军卢春锋贾志男舒振国黄东旭王坤晓
Owner RUIJIE ENVIRONMENTAL PROTECTION TECH CO LTD
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