阻水透油支撑剂在高含水储层的应用

Application of water-blocking and oil-permeable proppant in the high water-cut reservoir

周万富 李庆松 韩重莲 王力 傅海荣 李胜利

ZHOU Wanfu LI Qingsong HAN Zhonglian WANG Li FU Hairong LI Shengli

中国石油大庆油田有限责任公司采油工程研究院 黑龙江省油气藏增产增注重点实验室

Oil Production Engineering Research Institute, PetroChina Daqing Oilfield Co., Ltd., Daqing 163453, Heilongjiang, China Key Laboratory of Oil and Gas Reservoir Stimulation of Heilongjiang Province, Daqing 163453, Heilongjiang, China

针对大庆油田特高含水期压裂增产措施中，常规支撑剂石英砂无法控制采出液含水率的问题，研发了阻水透油支撑剂，主要是采用带活性基团的有机硅化合物覆膜于石英砂上，使其外表面具有疏水亲油气的特性，大幅提高了其控水能力。室内性能评价结果表明，该支撑剂油润湿指数大于0.75，在一定压差下油的通过能力是水的10倍以上，现场应用控水成功率100%，比常规支撑剂控水成功率提高54个百分点，该支撑剂可成为油田开发后期降低开采成本、提高可采储量的生力军。

Considering that the conventional proppant quartz sand fails in control the water cut of the produced fluid in fracturing stimulation Daqing Oilfield at the ultra-high water cut stage, the water-blocking and oil-permeable proppants were developed. The quartz sand was coated by organosilicon compound with active groups, and the lyophobic and lipophilic property was imposed on the surface of quartz sand to improve the water control ability of proppants. The laboratory evaluation shows that the oil wettability index of the proppant is greater than 0.75, and the permeation capacity of oil is more than 10 times that of water under a certain pressure difference. The success rate of water control is 100%, which is 54 percentage points higher than that of conventional proppant. This proppant provides a new method for reducing the development cost and increasing the recoverable reserves.

10.13639/j.odpt.2022.05.020