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Solidified agent for drilling well waste mud

A technology of curing agent and waste mud, which is applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. Short curing time, no secondary pollution, and the effect of meeting environmental protection requirements

Inactive Publication Date: 2008-01-02
刘茂平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some curing agents have a slow curing speed, and at the same time, the water in the discharged drilling waste mud pollutes nearby water sources and destroys soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] Example 1: Sulphoaluminate cement clinker fine powder 49.8%; hemihydrate gypsum powder 20%; quicklime powder 30%; polyacrylamide 0.2%.

example 2

[0013] Example 2: Sulphoaluminate cement clinker fine powder 69.5%; hemihydrate gypsum powder 10%; quicklime powder 20%; polyacrylamide 0.5%.

[0014] Best embodiment: 59.7% of fine powder of sulphoaluminate cement clinker; 15% of hemihydrate gypsum powder; 25% of quicklime powder; 0.3% of polyacrylamide.

[0015] The above-mentioned proportions are all percentages by weight, and the unit of measurement is gram.

[0016] The weight ratio of the curing agent in the above proportion to the drilling waste mud is 1:3.

[0017] On-site use method:

[0018] (1) Adjust the liquid level of the mud pool so that it is 50cm below the ground level. If it is a high-level mud pool, you can first dig a deep pit with a trencher next to the waste mud pool, then put the waste mud into the deep pit, and sprinkle the curing agent. Open, mix well with the mud, and divide the mud pool into 4-6 pools to ensure that the mud and cuttings in each pool are basically homogeneous, and implement segmente...

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Abstract

A solidifying agent for the used sludge of drilling well is proportionally prepared from powdered thioaluminate cement clinker, semi-hydrated gypsum powder, calcium lime, and polyacrylamide through grinding. Its advantages are short solidifying time, low cost and no secondary pollution.

Description

technical field [0001] The invention relates to oil drilling pollution prevention technology, in particular to a solidification additive for preventing pollution of drilling waste mud. Background technique [0002] Thousands of new wells are drilled every year in our country, and the waste mud produced by each well is about 70-80 cubic meters, with a moisture content of more than 60%. These waste muds are a mixture containing many harmful substances. Containing organic matter, heavy metal ions, oil and soluble salts that are harmful to the surrounding environment, if they are directly discharged or discarded in the waste mud pool, they will have a harmful impact on the surrounding water system and ecological environment. Because the treatment of these waste mud is difficult, it is often piled up near the well site, causing water and environmental pollution, and occupying valuable cultivated land resources. The land occupation cost of each well is about 40,000 yuan per year. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/14
Inventor 刘茂平房建国刘敏任秀娥
Owner 刘茂平
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