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Method and device for graded recovery of mud and base oil in waste oil-based drilling fluid

An oil-based drilling fluid and base oil technology, which can be used in the preparation of liquid hydrocarbon mixtures, earth-moving drilling and wellbore flushing, etc., and can solve the problems of high-efficiency separation and utilization of difficult oil, low recovery efficiency of oil phase, waste of resources, etc.

Active Publication Date: 2020-12-29
SHANGHAI HUACHANG ENVIRONMENT PROTECTION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved in this disclosure is: the existing oil-based drilling fluid cuttings treatment technology is not efficient in recovering the oil phase, especially it is difficult to efficiently separate and utilize the oil carried in the pores of cuttings particles, resulting in a waste of resources

Method used

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  • Method and device for graded recovery of mud and base oil in waste oil-based drilling fluid
  • Method and device for graded recovery of mud and base oil in waste oil-based drilling fluid
  • Method and device for graded recovery of mud and base oil in waste oil-based drilling fluid

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Embodiment 1

[0063] In an oil-based mud drilling project in a shale gas block in Chongqing, the waste oil-based drilling fluid classification recovery test was carried out according to the method and device of the present invention. The specific operation process and effects are described as follows:

[0064] 1. Physical and chemical properties test of oil-based drilling fluid cuttings samples

[0065] 1) Oil, water and solid three-phase content test

[0066] The oil content of the sample is tested by Soxhlet extractor-infrared spectroscopy, the solid content of the sample is tested by the method of muffle furnace drying and weighing, and the water content of the sample is calculated by subtracting the oil and solid content from the total mass; measured The oil content of the sample is 19.4%, the solid content is 63.1%, and the calculated water content is 17.5%.

[0067] 2) Organic matter component test

[0068] The organic matter spectrum of oil-based drilling fluid cuttings measured by...

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Abstract

The invention relates to a method and device for recycling mud and base oil in waste oil base drilling fluid through grading and provides the method for recycling the mud and base oil in the waste oilbase drilling fluid through grading. The method comprises the following steps of centrifugal deoiling, rotational flow deoiling and heterogeneous separation of oil and moisture. The invention furtherprovides the device for recycling the mud and base oil in the waste oil base drilling fluid through grading.

Description

technical field [0001] The disclosure belongs to the technical field of treatment of oily solid waste produced in the process of oil and gas drilling and completion, and in particular relates to a method and device for recycling waste oil-based drilling fluid. Specifically, the present disclosure provides a method and device for recovering mud and base oil in waste oil-based drilling fluid in stages. Background technique [0002] Waste oil-based drilling fluid is widely used in complex formations or special drilling around the world due to its advantages of high temperature resistance, salt and calcium erosion resistance, protection of oil and gas layers, increase of drilling speed, effective prevention of jamming, and reduction of downhole accidents. . [0003] The third opening and horizontal section of shale gas wells are usually more than 1500m long, producing a large amount of oil-bearing cuttings (the production volume of a single well is about 250-500m 3 ). The oil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/06C10G1/00
CPCC10G1/00E21B21/06E21B21/063
Inventor 潘嘉科汪华林吴霁薇江霞王礼翔刘盛鹏李剑平黄渊付鹏波
Owner SHANGHAI HUACHANG ENVIRONMENT PROTECTION
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