纤维复合压裂防砂技术研究与应用

Research on fibrous composite fracturing sand control technique and its application

吕芬敏 周婕 宋其伟 钟银

LV Fenmin ZHOU Jie SONG Qiwei ZHONG Yin

吐哈油田公司温米采油厂，新疆鄯善838202 吐哈油田公司开发处，新疆鄯善838202

Wenmi Production Plant of Tuha Oilfield Company, Shanshan 838202, China Development Department of Tuha Oilfield Company, Shanshan 838202, China

为从根本上解决温米油田低压、中低渗油层压裂改造后支撑剂回流使地层出砂,或油层疏松开采过程中生产压差过大使地层出砂问题，减少因油层出砂造成油井的机械故障或冲砂作业工作量。从出砂、防砂机理入手，通过研究及试验优选出适合温米油层物性的纤维复合体、涂敷砂，优化压裂施工参数, 在压裂携砂液中加入适量纤维复合体，进行地层深部防砂，后期尾追涂敷砂，防止支撑剂返吐。应用结果表明，该技术适应性强，延长了油井的生产周期，并取得了较好的增产效果。

After the fracturing and transformation of the low-pressure and mid-low permeability formation in Wenmi Oilfield, the propping agent will flow back to the formation. The producing pressure drop will get too high during the process of sand production and reservoir loose production. As a result, sand will be produced in the formation. To fundamentally solve the problem and reduce the mechanical fault caused by reservoir sand production and the sand washing operation, starting with the mechanisms of sand production and sand control, the fibrous composite and the coated sand suitable for the physical properties of reservoirs in the oilfield are selected based on conducting research and tests. Fracturing parameters are optimized. Fibrous composites are appropriately added into the sand-laden fluid. Sand control is conducted in the deeper formation and later coated sand is added, so as to prevent back flow of the propping agent. Field application shows that the technology has strong applicability, and it can prolong the producing period of oil wells and get better stimulation results.