成果归属作者：

赖枫鹏

成果归属机构：

能源学院

作者：

Pan, Lifang ; Xie, Shuixiang ; Wang, Qibing ; Lai, Fengpeng ; Sun, Jinsheng ; Ren, Wen ; Zhang, Mingdong

单位：

China Univ Geosci Beijing, Sch Energy Resources, Beijing 100083, Peoples R China;State Key Lab Petr Pollut Control, Beijing 102206, Peoples R China;CNPC Res Inst Safety & Environm Technol, Beijing 102206, Peoples R China;CNPC Engn Technol R&D Co Ltd, Beijing 102206, Peoples R China

关键词：

RHEOLOGICAL PROPERTIES; BENTONITE; WATER; STABILITY; BEHAVIOR; COPPER; FILTRATION; FLOTATION

摘要：

The growth in global energy demand has spurred the development of deep and ultra-deep oil and gas exploration. Polysulfonate drilling fluid (PSDF) is widely used in ultra-deep well drilling due to its high stability, but this stability creates significant challenges for waste treatment. Existing technologies suffer from limitations such as complex operations, low separation efficiency, incomplete resource recovery, and a lack of systematic research on ion impacts in ultra-deep well waste PSDF reuse. This study developed a composite gel-breaker AHPJ-1, which eliminates the need for pretreatment and additional chemical agents. For ultra-deep well waste PSDF, AHPJ-1 achieved efficient gel-breaking and solid-liquid separation, with a maximum filtrate volume of 162.4 mL and a residual solid content in the liquid phase as low as 3.1 %. Notably, it systematically quantified 10 common ions' effects on drilling fluid reconstitution, establishing clear concentration thresholds, filling gaps of prior qualitative or cation-only studies. An integrated "gel-breaking-solid-liquid separation-drilling fluid reconstitution" process was validated in a Tarim Oilfield trial (88 days; 678 m(3) waste treated; 181 m(3) filtrate reused). This work provides an efficient technical solution for ultra-deep well waste PSDF recycling, enriches the theoretical basis for ion regulation in reconstitution, and advances the industrial application of waste drilling fluid resource utilization.

基金：

China National Petroleum Corpo-ration Technology Project [2025ZG73]

语种：

英文

DOI：

10.1016/j.colsurfa.2025.138816

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2026():.

出版日期：

2026-01-05

提交日期：

2025-12-08

引用参考：

Pan, Lifang; Xie, Shuixiang; Wang, Qibing; Lai, Fengpeng; Sun, Jinsheng; Ren, Wen; Zhang, Mingdong. Separation and recycling of waste polysulfonate drilling fluid used in ultra-deep wells[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2026():.