A Quantitative Evaluation Method for Lost Circulation Materials in Bridging Plugging Technology for Deep Fractured Reservoirs

作者：Kun Guo, Yili Kang, Chengyuan Xu, Chong Lin, Zhichao Xie, Lijun You, Ting Huang, Zhenjiang You · 发表于：SPE Journal · 年份：2025 · DOI：10.2118/228302-pa · 被引用次数：4 · 研究领域：Drilling and Well Engineering、Hydraulic Fracturing and Reservoir Analysis、Oil and Gas Production Techniques

Summary Lost circulation is one type of complex engineering problem in the drilling process. Bridging plugging technology is the most common method of lost circulation control in fractured reservoirs by which loss channels are plugged with lost circulation materials (LCMs). A successful application of LCMs requires selecting suitable materials from hundreds of LCM options, preparing the plugging slurry that matches the loss zone conditions, and adopting the appropriate lost circulation control construction technology. Therefore, through this study, we propose a quantitative evaluation method for LCMs to facilitate the selection of suitable LCMs in field applications. First, we propose characteristic parameters of LCMs based on the entire lifecycle of the fracture plugging zone. Subsequently, we design and conduct experiments to evaluate these parameters based on the temperature and pressure characteristics of the loss zone. Then, we calculate the characteristic parameters’ weight coefficients of the LCMs by the fuzzy analytic hierarchy process (FAHP). Finally, we establish a grading index for characteristic parameters and a quantitative scoring model for LCMs, enabling selection based on the quantitative scores. The reliability of the proposed evaluation method is validated through dynamic fracture plugging experiments and field application results. Research results demonstrate that the plugging zone formed by the plugging slurry, composed of high-scoring LCMs, can withstand ...