Regional distribution, properties, treatment technologies, and resource utilization of oil-based drilling cuttings: A review

Hu, Yuansi; Mu, Shiqi; Zhang, Jingjing; Li, Qibin

doi:10.1016/j.chemosphere.2022.136145

Cited by 15 publications

(3 citation statements)

References 182 publications

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“…Various methods, including landfilling [ 6 ], reinjection [ 7 ], stabilization/solidification [ 8 ], solvent extraction [ 9 ], and chemical cleaning [ 10 ], have been exploited for the treatment of OBDCs. However, these methods have not gained widespread adoption, primarily due to their high cost, low recovery rates, and high requirements for equipment performance.…”

Section: Introductionmentioning

confidence: 99%

Construction of Shale Gas Oil-Based Drilling Cuttings Degrading Bacterial Consortium and Their Degradation Characteristics

Fan,

Gong,

et al. 2024

Microorganisms

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Oil-based drilling cuttings (OBDCs) contain petroleum hydrocarbons with complex compositions and high concentrations, which have highly carcinogenic, teratogenic, and mutagenic properties. In this study, three highly efficient petroleum hydrocarbon-degrading bacteria were screened from OBDCs of different shale gas wells in Chongqing, China, and identified as Rhodococcus sp. and Dietzia sp. Because of their ability to degrade hydrocarbons of various chain lengths, a new method was proposed for degrading petroleum hydrocarbons in shale gas OBDCs by combining different bacterial species. Results showed that the bacterial consortium, consisting of the three strains, exhibited the highest degradation rate for petroleum hydrocarbons, capable of degrading 74.38% of long-chain alkanes and 93.57% of short-chain alkanes, respectively. Moreover, the petroleum hydrocarbon degradation performance of the bacterial consortium in actual OBDCs could reach 90.60% in the optimal conditions, and the degradation kinetic process followed a first-order kinetic model. This study provides a certain technical reserve for the bioremediation of shale gas OBDCs.

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Section: Introductionmentioning

confidence: 99%

Construction of Shale Gas Oil-Based Drilling Cuttings Degrading Bacterial Consortium and Their Degradation Characteristics

Fan,

Gong,

et al. 2024

Microorganisms

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“…It has been included in the “Direction of National Hazardous Wastes (Version, 2021)” in the HW08 category in China. 5 Therefore, the oil content of OBDC must be effectively reduced before discharge or resource utilization. At present, the commonly used technologies for OBDC treatment mainly include thermal desorption, solvent extraction and chemical cleaning.…”

Section: Introductionmentioning

confidence: 99%

Treatment of oil-based drilling cuttings by floatation-advanced oxidation two-step process

Xu,

Zhang,

et al. 2024

RSC Adv.

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“…It contains a variety of harmful pollutants, and high concentrations of soluble salts, organic matter, and heavy metals may have a serious impact on regional organisms [3]. Because of its toxicity to humans and the environment, China has listed OBDC as HW08 hazardous waste in the 《National Hazardous Waste List ( 2021 )》 [4]. According to statistics, the current annual output of OBDC will exceed 3 million tons in China.…”

Section: Introductionmentioning

confidence: 99%

Study on pyrolysis law of shale gas oil-based drilling cuttings : kinetics and product characteristics

Liu,

Li,

et al. 2024

Preprint

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oil-based cuttings(OBDC)is a typical hazardous waste produced in the process of shale gas field development, and pyrolysis has been proved to be an effective treatment method, that can recover the harmful components and achieve resource reuse. In this paper, thermogravimetric experiments were carried out to study the pyrolysis kinetics, and the effects of pyrolysis temperature on the gas phase yield, oil quality and solid phase heavy metal migration were analyzed. The results show that the pyrolysis of OBDC is divided into three stages, and the light hydrocarbon cracking stage is the key control step of the pyrolysis process. In addition, the maximum weight loss rate of the sample with high heating rate appears at a higher temperature. Friedman (FM), Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink conversion methods can well fit the weight loss curve, and the estimated average activation energy is 185.5,184.16,166.17 and 176.03 kJ / mol, respectively. The estimated values are close and more accurate. The activation energy increases with the deepening of the reaction process. The solid phase products after pyrolysis accounted for more than 70% of the main products. The pyrolysis temperature had a great influence on the liquid phase yield, and the oil phase yield decreased by 1.17% from 450°C to 500°C. In the recovered mineral oil before and after pyrolysis: C15 ~ C28 pyrolysis C10 ~ C14 increased by 2.89%, C15 ~ C28 volatilization decreased by 3.26%, and high temperature aging increased C29 ~ C36 by 0.63%; aromatic hydrocarbons, as the coking parent, change from low ring to high ring. In addition, the content of heavy metals in the residue increased after pyrolysis, and more heavy metals were enriched in the residue. This study is helpful for the solidification of heavy metals and the recycling of solid waste, which is conducive to reducing energy and resource consumption and improving the processing technology of production.

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Regional distribution, properties, treatment technologies, and resource utilization of oil-based drilling cuttings: A review

Cited by 15 publications

References 182 publications

Construction of Shale Gas Oil-Based Drilling Cuttings Degrading Bacterial Consortium and Their Degradation Characteristics

Construction of Shale Gas Oil-Based Drilling Cuttings Degrading Bacterial Consortium and Their Degradation Characteristics

Treatment of oil-based drilling cuttings by floatation-advanced oxidation two-step process

Study on pyrolysis law of shale gas oil-based drilling cuttings : kinetics and product characteristics

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