川西地区新场气田储层伤害因素研究

四川新场气田蓬莱镇组和沙溪庙组属于低渗、高束缚水饱和度气藏,测试表明储层存在较为严重的伤害问题,因此开展了储层伤害因素分析和试验研究。研究结果表明,主要伤害因素为外来液体引起的水锁、水敏伤害,碱敏伤害次之。针对伤害因素,提出了相应的建议。

Study of the Formation Damage Factors of Xinyang Gas Field in Westem Sichuan

The Penglai and Shaximiao formation in Xinchang gas field of Sichuan belongs to lower penetrate and higher irreducible water rate reservoir. It is ensured that the formation was severely damaged, so analysis and test research of the damaging factors was necessary. The research effect shows that the main damaging factors are water sensitivity and water locking, which caused by out-injection liquids. The secondly was alkalis sensitivity damage. Corresponding propose were put forward aim at the damaging factors.