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Processing technology of waste oil-based mud and oil-based drilling cuttings

A technology of oil-based mud and oil-based drilling cuttings, which is applied in the fields of earth-moving drilling, wellbore/well components, etc., can solve the problems of pollution of oil-based mud and oil-based drilling cuttings, and achieves no secondary pollution, equipment investment and The effect of low operating cost and convenient discharge treatment

Inactive Publication Date: 2015-03-04
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can not only solve the pollution problem of oil-based mud and oil-based drilling cuttings, but also recycle waste oil-based mud and oil-based drilling cuttings, and has good environmental and economic benefits

Method used

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  • Processing technology of waste oil-based mud and oil-based drilling cuttings

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Embodiment 1

[0013] The waste oil-based mud and oil-based drilling cuttings collected in the drilling production of an oilfield are ground according to the requirements through the corresponding grinding process. The waste oil-based mud and oil-based drilling After being ground, the index of the shavings meets the requirement of being remade into base slurry or oil-based mud, and can be directly added into the production process as a raw material. Its technology realizes the recycling and harmless treatment of oil-based mud and oil-based drilling cuttings, and can recover most of the waste oil-based mud. There is no secondary pollution, low equipment investment and operating costs, and significant environmental, social and economic benefits.

[0014] Example: Economic benefit analysis of 1 ton waste oil-based mud and oil-based drilling cuttings treatment

[0015] Assume that the treatment service fee is 1,000 yuan (income); 1 ton of waste oil-based mud and oil-based drilling cuttings has ...

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Abstract

The invention relates to a processing technology of waste oil-based mud and oil-based drilling cuttings, in particular to a technology for manufacturing base mud and oil-based mud through the waste oil-based mud and the oil-based drilling cuttings. The technology comprises the steps of 1, collecting the waste oil-based mud and the oil-based drilling cuttings, 2, utilizing equipment for carrying out separation processing on solid phases of the waste oil-based mud and solid phases of the oil-based drilling cuttings, 3, carrying out grinding processing on the waste oil-based mud and the oil-based drilling cuttings after large-particle sold phases are removed, 4, manufacturing the ground waste oil-based mud and the ground oil-based drilling cuttings into the base mud and the oil-based mud, and 5, carrying out up-to-standard release processing on the large-particle sold phases obtained after separation. According to the technology, reclamation and innocent processing can be carried out on the waste oil-based mud and the oil-based drilling cuttings, and the solid phases in the original waste mud and the oil-based drilling cuttings are ground and then are manufactured into the base mud and the oil-based mud, and then are recycled. Secondary pollution hardly exists, and equipment investment and operation cost are low. The technology has the obvious environment benefits, social benefits and economic benefits.

Description

technical field [0001] The invention relates to a process for treating waste oil-based mud and oil-based drilling cuttings, in particular to a process for making base mud and oil-based mud from waste oil-based mud and oil-based cuttings, belonging to shale gas, tight gas and conventional oil and gas fields The field of processing oil-based mud and oil-based cuttings in drilling. Background technique [0002] Drilling waste oil-based mud and oil-based drilling cuttings are pollutants produced during the production of oil and gas wells. It is widely used in the drilling engineering of salt layer, anhydrite layer, miscellaneous salt layer and high temperature deep well. It is a complex multiphase system containing mineral oil, phenolic compounds and heavy metals, and the aromatic hydrocarbons in diesel oil leachate have high biological toxicity. Oilfield drilling produces a large amount of waste mud or oil-based cuttings every day. The direct discharge of waste oil-based mud ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B41/00
CPCE21B41/005
Inventor 杜国勇陈浩陈馥
Owner SOUTHWEST PETROLEUM UNIV
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