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

doi:10.11885/j.issn.1674-5086.2022.04.14.03

Abstract

Abstract: 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/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.

Key words: non-burn free proppant, hydraulic fracturing, oil-based drill cuttings, hydration hardening, resource utilization

CLC Number:

TE256
X741

BAI Yang, CHANG Shuang, LIU Yucheng, LIU Xinguo, LUO Pingya. Performance Study on the Preparation of Fracturing Proppants Based on Oil-based Drilling Chips[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2024, 46(1): 76-88.

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