首页|基于油基钻屑制备压裂支撑剂的室内研究

基于油基钻屑制备压裂支撑剂的室内研究

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针对热解析后脱油钻屑处理难和处理方式单一的问题,开展了将油基钻屑残渣制备成免烧压裂支撑剂的研究,研究了钻屑与水泥比、CMC添加量、石膏添加量和养护天数共4个因素对免烧压裂支撑剂性能影响.结果表明,在原料配比较优的情况下,制备工艺为钻屑水泥比0.67(质量比),石膏添加量为6％(质量分数),CMC添加量为4％(质量分数),养护时间28 d.该条件下制得的压裂支撑剂颗粒体积密度为1.47 g/cm3,视密度为2.52 g/cm3,35 MPa下颗粒破碎率为1.57％.经扫描电子显微镜与X射线衍射仪分析发现,此时压裂支撑剂内部结构致密,孔隙封闭,水化产物CaO·SiO2·nH2O凝胶和钙长石类物质有利于提高压裂支撑剂的综合物理性能.为脱油钻屑残渣利用提供新的方向.
Performance Study on the Preparation of Fracturing Proppants Based on Oil-based Drilling Chips
In view of the difficulty in treating deoiled drilling cuttings after thermal analysis and lack of treatment method choices,the research on preparing non-burn fracturing proppant from oil-based drilling cuttings residue was carried out.The research explored the effects of drilling cuttings/cement ratio,CMC addition,gypsum addition and curing days on the perfor-mance of non-bum fracturing proppant.The results show that under the condition of excellent raw material ratio,the preparation process is as follows:the drilling cuttings/cement ratio is 0.67(mass ratio),the gypsum content is 6％(mass fraction),the CMC content is 4％(mass fraction),and the curing time is 28 days.The volume density of fracturing proppant particles prepared under this condition is 1.47 g/cm3,the apparent density is 2.52 g/cm3,and the particle crushing rate under 35 MPa is 1.57％.Through the analysis of scanning electron microscope and X-ray diffraction,it is found that at this time,the internal structure of the fracturing proppant is compact,the pores are closed,and the hydration products C-S-H gel and anorthite are conducive to improving the comprehensive physical properties of the fracturing proppant.It provides a new direction for the utilization of deoiled drilling cuttings residue.

non-burn free proppanthydraulic fracturingoil-based drill cuttingshydration hardeningresource utilization

白杨、常爽、刘宇程、柳新国、罗平亚

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油气藏地质及开发工程全国重点实验室·西南石油大学,四川成都 610500

西南石油大学化学化工学院,四川成都 610500

西南石油大学石油与天然气工程学院,四川成都 610500

免烧支撑剂 水力压裂 油基钻屑 水化硬化 资源化利用

国家重点研发计划四川省科技计划四川省科技计划中国石油-西南石油大学创新联合体科技合作项目中国石油-西南石油大学创新联合体科技合作项目

2019YFA07083032020JDJQ00572020JDTD00182020CX0401022020CX040201

2024

10.11885/j.issn.1674-5086.2022.04.14.03

西南石油大学学报(自然科学版)
西南石油大学

西南石油大学学报(自然科学版)

CSTPCD北大核心
影响因子：1.226
ISSN：1674-5086
年,卷(期)：2024.46(1)
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