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Oil-based mud rock debris treatment method and drill-accompanying device for ocean drilling platform

An offshore drilling platform, oil-based mud technology, applied in separation methods, chemical instruments and methods, settling tank heating/cooling, etc., can solve the problem that oil-based mud cuttings have low deoiling efficiency and are not suitable for offshore drilling while drilling. , the device is bulky and other problems, to achieve the effect of compact structure, small footprint and high deoiling efficiency

Pending Publication Date: 2018-12-21
SHANGHAI HUACHANG ENVIRONMENT PROTECTION +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved in this disclosure is: the existing oil-based mud cuttings treatment technology has low deoiling efficiency for oil-based mud cuttings, and the device is bulky and not suitable for offshore drilling while drilling

Method used

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  • Oil-based mud rock debris treatment method and drill-accompanying device for ocean drilling platform
  • Oil-based mud rock debris treatment method and drill-accompanying device for ocean drilling platform
  • Oil-based mud rock debris treatment method and drill-accompanying device for ocean drilling platform

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Embodiment 1

[0075] In an oil-based mud drilling project in a shale gas block in Chongqing, the oil-based mud cuttings 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:

[0076] 1. Physical and chemical properties test of oil-based mud cuttings samples

[0077] 1) Oil, water and solid three-phase content test

[0078] 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%.

[0079] 2) Organic matter component test

[0080] The organic matter spectrum of oil-based mud cuttings measured by gas chromatography-mass spect...

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Abstract

The invention relates to an oil-based mud rock debris treatment method and a drill-accompanying device for an ocean drilling platform. The invention provides the oil-based mud rock debris treatment method for an ocean drilling platform, and the method comprises the following steps: (A) de-oiling by a rotary flow: feeding heated gas media carrying oil-based mud rock debris particles into a cyclone,in order to strengthen the removal of contaminants on the particle surfaces and in the pores, so as to realize the separation of the rock debris particles from the contaminants; (B) overflow gas condensation: condensing the oil in the gas media to reduce the oil content in the exhaust, thus achieving gas-liquid separation and obtaining an oil-water mixture and a mixed gas of gas media and non-condensable gas; (C) gas purification: performing gas purification of the mixed gas obtained in step (B); and (D) oil-water separation: performing oil-water separation of the oil-water mixture obtained in step (B). The invention also provides the drill-accompanying device for treating oil-based mud rock debris for an ocean drilling platform.

Description

technical field [0001] The disclosure belongs to the technical field of treatment of oily solid waste produced in the oil and gas drilling and completion process, and in particular relates to an oil-based mud cuttings treatment method and a device while drilling for an offshore drilling platform. Specifically, the present disclosure provides an oil-based mud cuttings processing method and a device while drilling for an offshore drilling platform. Background technique [0002] Oil-based drilling fluids are widely used in complex formations or special drilling around the world because of their advantages such as high temperature resistance, salt and calcium erosion resistance, protection of oil and gas layers, increased drilling speed, effective prevention of jamming, and reduction of downhole accidents. Offshore oil and gas wells usually have a length of more than 1500m in third openings and horizontal sections, producing a large amount of oily cuttings (the production volume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/00B01D21/26B01D5/00
CPCB01D5/0057B01D21/009B01D21/267
Inventor 潘嘉科汪华林吴霁薇江霞黄渊李剑平付鹏波
Owner SHANGHAI HUACHANG ENVIRONMENT PROTECTION
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