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

Inactive Publication Date: 2006-08-23
俞然刚
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Problems solved by technology

[0010] The purpose of the present invention is to study a high-efficiency solidification treatment agent for waste mud in oil f

Method used

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Embodiment Construction

[0026] The technical solution of the present invention is achieved in the following manner: the high-efficiency solidification treatment agent for waste mud in the oil field of the present invention mainly consists of two parts:

[0027] One part is composed of calcium-containing phosphate or superphosphate ion precipitant, acrylate polymer gel breaker, sepiolite and quicklime powder adsorbent, and the proportions (referring to the percentage content of the waste mud weight) are: ion precipitation agent (1-3%), gel breaker (1-2%), adsorbent (2-8%), the main function is to separate a large amount of water and some harmful substances in the waste mud, and detoxify the harmful substances in the liquid Substances are treated so that the treated water meets the GB5084-92 farmland irrigation standard.

[0028] The other part is composed of sulfoaluminate cement hardener, potassium alum loosening agent, and gypsum powder, and its proportioning (referring to the percentage content of ...

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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.

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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Application Information

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IPC IPC(8): C02F11/00C02F11/14
Inventor 俞然刚陈金平崔亦栋
Owner 俞然刚
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