老君庙油田东低产区水敏储层缩膨增产技术研究

Study on swelling reduction and stimulation technique for water-sensitive reservoirs in the east low production area of Laojunmiao Oilfield

老君庙油田M油藏低渗难动用的东低产区开发中存在注不进、采不出的状况,为此,以K286取心井M1、M2岩样为研究对象,对储层的水敏伤害进行了评价。通过对M油藏东低产区储层特征深化研究,对现场应用的防膨和缩膨化学助剂进行了优选评价,开发出以水井缩膨增注、油井防膨增产为主要内容的一体化技术,为M油藏东低产区综合调整、增储上产、改善开发效果提供了科学依据。

The east low production area of the M reservoir in Laojunmiao Oilfield is low permeability and hard to recover, and has problems that nothing can be injected and produced during development. Therefore, reservoir damage due to water sensitivity is evaluated with M1 and M2 core samples from Well K286. Chemical agents for antiswelling and swelling reduction have been optimized and evaluated through deep study of reservoir characteristics for the east low production area of the M reservoir. An integral technique for reducing swelling and increasing injection in water well and preventing swelling and increasing production in oil well has been developed. This study provides scientific basis for overall adjustment, increasing reserves and production, and improving development result for the east low production area of the M reservoir.