High efficiency solidifying processing agent for waste sludge in oil area and its solidifying treating process

A solidification treatment, waste mud technology, applied in the direction of sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problems of environmental pollution of waste mud in oil fields, and achieve the setting and hardening time Short, high strength, less extractables
CN1821129AInactive Publication Date: 2006-08-23俞然刚
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
俞然刚
Publication Date
2006-08-23
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The present invention relates to environment protecting technology, and is especially waste drilling slurry solidifying and treating agent and solidifying and treating process. The efficient waste drilling slurry solidifying and treating agent consists of two parts, including the first part comprising ionic precipitant 1-3 wt%, cracking agent 1-2 wt%, adsorbent 2-8 wt%, and the second part comprising hardening agent of aluminosulfate 5-20 wt%, loosener 2-4 wt% and gypsum powder 2-8 wt%. The waste drilling slurry solidifying and treating process with the efficient waste drilling slurry solidifying and treating agent includes: mixing waste drilling slurry with ionic precipitant and cracking agent through stirring, stilling for 1-3 hr, adding adsorbent to separate solid, mixing the deposited solid with hardening agent, loosener and gypsum powder, and stilling for 3-7 days. The present invention has high water stability, and can obtain solidified matter capable of being used in planting.
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Description

1. Technical field

[0001] The invention relates to the comprehensive treatment of drilling waste mud in oil fields in the technical field of environmental protection. 2. Background technology

[0002] For more than 100 years of modern petroleum exploration and development, drilling waste mud has also existed for more than a century. Taking Shengli Oilfield as an example, in recent years, the oilfield needs to drill about 1,000 various production wells, exploration wells, and inspection wells each year, and the waste mud produced by each well is about 100m 3 Above, approximately 1.0×10 5 m 3 The above drilling waste mud. Due to the dispersion and concealment of waste mud, its pollution prevention and comprehensive treatment have not attracted enough attention, and the research on the comprehensive treatment and reuse technology of waste mud started relatively late.

[0003] Drilling waste mud is divided into two categories: water-based mud and oil-based mud. Oilfield dril...

Claims

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