可降解压裂球试验研究及现场应用

Study on Degradable Fracturing Ball and Field Application

水平井分段压裂是页岩气开发储层改造的核心技术。桥塞的发展趋势从可钻、易钻向可降解的方向发展,其中的大通径桥塞和可溶桥塞就是一种无干预化作业的新型完井工具。优选了4种高强度可降解金属材料,验证了其承压性能。通过试验,研究了可降解金属材料在不同温度、不同溶液浓度、不同电解质溶液中的降解性能,对促进我国全可溶桥塞的自主研发具有一定的指导意义。

Horizontal well fracturing of shale gas reservoir development is the core technology of layer transformation,its development trend from drilling,easy drilling to development of biodegradable,and a new completion tool of big bore bridge plug and soluble bridge plug is a new type of non intervention operation.Four kinds of high strength biodegradable metal materials were optimized to verify the pressure performance,analyze the degradation mechanism of biodegradable metallic materials at different temperature,different concentrations,different electrolytes,which has a guiding significance to promote the independent research and development of China＇s total soluble bridge plug.