Preparation of pentaerythritol-β-cyclodextrin ether and application in the extraction process of oil-containing drill cuttings

Volume 8, Issue 2, April 2023     |     PP. 33-43      |     PDF (351 K)    |     Pub. Date: December 5, 2023
DOI: 10.54647/energy480203    53 Downloads     230722 Views  

Author(s)

Qiang Yang, Department of Development Division, petrochina Southwest Oil and Gas Field Company Chengdu, Sichuan, PR China.
Lai Wei, Department of Development Division, petrochina Southwest Oil and Gas Field Company Chengdu, Sichuan, PR China.
Yanlin Lu, Department of Development Division, petrochina Southwest Oil and Gas Field Company Chengdu, Sichuan, PR China.
Dongchang Zhu, Department of Development Division, petrochina Southwest Oil and Gas Field Company Chengdu, Sichuan, PR China.
Pengchang Wu, Department of Development Division, petrochina Southwest Oil and Gas Field Company Chengdu, Sichuan, PR China.

Abstract
Cyclodextrins are widely used in medicine, daily chemicals and other fields, because of its special physical and chemical properties and excellent biological characteristics, but due to the limitation of poor solubility, various modification methods have become a research hotspot for scientific researchers. In this paper, pentaerythritol was selected as raw material, pentaerythritol was combined with cyclodextrin 6-position hydroxyl group to prepare pentaerythritol-β-cyclodextrin ether, and two effective characterization methods were used to characterize the product. Since pentaerythritol as an extractant for oil-bearing drill cuttings or oil-containing sludge has been used in oil drilling and other fields, this paper is applied by oil-containing drill cuttings treatment in East China Sea oil and gas fields, and the field application results show that pentaerythritol-β-cyclodextrin ether as a solvent for oil-containing drill cuttings extraction treatment has high efficiency, can greatly reduce the footprint of the device, and is especially suitable for offshore platforms with limited space, and the solid phase oil content rate of oil-containing drill cuttings generated after extraction treatment is 1.04%, which meets the environmental protection emission standards for offshore oil-bearing drill cuttings. In addition, part of the mineral oil can be recovered.

Keywords
cyclodextrin; pentaerythritol; pentaerythritol-β-cyclodextrin ether; oil-containing drill cuttings; extraction

Cite this paper
Qiang Yang, Lai Wei, Yanlin Lu, Dongchang Zhu, Pengchang Wu, Preparation of pentaerythritol-β-cyclodextrin ether and application in the extraction process of oil-containing drill cuttings , SCIREA Journal of Energy. Volume 8, Issue 2, April 2023 | PP. 33-43. 10.54647/energy480203

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