Rotational flow rotation deoiling method and device for oil-based mud rock debris

US12017937B2 · kind B2 · utility

Assignees

• Shanghai Huachang Environmental Protection Co., Ltd. · CN
• Sichuan University · CN
• East China University of Science and Technology · CN

Inventors

• Jiwei Wu · Shanghai, CN
• Hualin Wang · Shanghai, CN
• Jiake Pan · Shanghai, CN
• Xia Jiang · Sichuan, CN
• Lixiang Wang · Changzhou City, CN
• Yuan Huang · Tangxia, CN
• Jianping Li · Shanghai, CN
• Pengbo Fu · Shanghai, CN
• Wenjie LV · Shanghai, CN

Key dates

• Filing date: Dec 5, 2018
• Grant date: Jun 25, 2024
• Expiry date: Sep 22, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F11/13
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Disclosed is a rotational flow rotation deoiling method for oil-based mud rock debris. The method comprises the following steps: (1) System viscosity control, wherein by means of heat exchange between a gas medium and the rock debris, the viscosity of the oil-based mud debris is reduced to reduce the interaction force between oil, water, and the surface and channels of solid particles, thereby facilitating the separation in a rotational flow field; (2) Rotational flow rotation deoiling, wherein the oil-based mud rock debris particles undergo a coupled motion of rotation and revolution, wherein by means of the rotation of the rock debris particles, the centrifugal desorption of oil on the surface of a solid phase, oil in capillaries and oil in pores is enhanced; and by means of the centrifugal force of periodic oscillation generated by the revolution thereof, the separation and enrichment of oil and gas and the solid phase are completed, thereby achieving the removal of the oil phase from the pore channels of the rock debris; and (3) gas-liquid separation and reuse, wherein an oil-containing mixture produced in step (2) is subjected to gas-liquid separation so as to realize the reus…