基于油基钻屑制备压裂支撑剂的室内研究  

Performance Study on the Preparation of Fracturing Proppants Based on Oil-based Drilling Chips

作　　者：白杨[1] 常爽 刘宇程[2] 柳新国 罗平亚[1] BAI Yang;CHANG Shuang;LIU Yucheng;LIU Xinguo;LUO Pingya(National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China;College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China;Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]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 [2]西南石油大学化学化工学院,四川成都610500 [3]西南石油大学石油与天然气工程学院,四川成都610500

出　　处：《西南石油大学学报（自然科学版）》2024年第1期76-88,共13页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家重点研发计划(2019YFA0708303);四川省科技计划(2020JDJQ0057,2020JDTD0018);中国石油西南石油大学创新联合体科技合作项目(2020CX040102,2020CX040201)。

摘　　要：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/cm^(3),视密度为2.52 g/cm^(3),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·SiO_(2)·nH_(2)O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。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 performance of non-burn 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/cm^(3),the apparent density is 2.52 g/cm^(3),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.

关 键 词：免烧支撑剂 水力压裂 油基钻屑 水化硬化 资源化利用 

分 类 号：TE256[石油与天然气工程—油气井工程] X741[环境科学与工程—环境工程]