Preparation and properties of lightweight and high-strength building ceramsites with oil-based drilling cuttings pyrolysis residues

Frontiers in Materials

Materials

Guobing Jiang¹  Xinyu Huang¹  Tian Meng¹  Hongjuan Wang¹  Jinlei Yu¹  Dong Lin¹  Liang Zhao¹  Jing Li¹  Hongwu Liu²  Yuanyi Yang³ 

[1] Safety and Technology Supervision Research Institute of PetroChina Southwest Oil and Gas Field Company, Chengdu, China;Shale Gas Evaluation and Exploitation Key Laboratory of Sichuan Province, Chengdu, China;School of Civil Engineering and Geometrics, Southwest Petroleum University, Chengdu, China;School of Civil Engineering and Geometrics, Southwest Petroleum University, Chengdu, China;Research Institute of Engineering Safety Assessment and Protection of Southwest Petroleum University, Chengdu, China;

关键词: oil-based drilling cutting pyrolysis residues;    building ceramsite;    sintering reaction;    lightweight;    high-strength;   

DOI  :  10.3389/fmats.2023.1245121

 received in 2023-06-23, accepted in 2023-08-15,  发布年份 2023

来源: Frontiers

【 摘 要 】

With the continuing advancement in China’s exploration and development technologies of shale gas resources, there was a significant increase in shale gas oil-based drilling cuttings. In this paper, oil-based drilling cutting pyrolysis residues (ODCPRs) was used as the main raw material for preparing lightweight and high-strength building ceramsites to eliminate the environmental risks and recycle industrial waste. Firstly, orthogonal experiments were used to study the influences of raw material composition, preheating temperature, preheating time, sintering temperature, and sintering time on the properties of building ceramsites. From the results, the sintering temperature and the content of ODCPRs were discovered to be the key factors affecting the sintering process of ceramsites. Secondly, the influences of sintering temperature and heating rate on the properties of building ceramists were further explored to find the optimum sintering conditions. When the content of ODCPRs in the ceramsite was set to be 50%, the obtained building ceramsites presented excellent properties with particle compressive strength of 6.31 MPa, bulk density of 575.11 kg/m3, apparent density of 1097.24 kg/m3, and the water absorption of 1.89%. Finally, XRD, SEM, TG-DSC, and heavy metal leaching experiments were comprehensively conducted to analyze the composition structure variation and sintering mechanism of the building ceramsite. This paper presents an approach for the recycling, utilization, and disposal of oil-based drilling cuttings in the oil field waste management.

【 授权许可】

Unknown   
Copyright © 2023 Wang, Li, Lin, Jiang, Zhao, Yu, Meng, Huang, Liu and Yang.