关键词: 油层伤害, 评价, 岩心, 模拟, 增产措施, 优化

Abstract: A test and the analysis of the formation sensitivities for fluid flow,salt,water and acid have been finished by using the methods of static state,dynamic state,inside and outside tests with the core from Zhuang 120 3 well for the case that 10 wells was fail to produce,3 well fail to be fractured and the rate of success of acidization was only 22%.The most important influncement is that acidization has been given.The sensitivities for fluid flow,salt,and water are not importent.The characters of two acid prescriptions(hydrochoric acid and mud acid) and two kinds of new block separating agents have been studied.The methods to separate formation damage based on the analysis of the formation treatment result by using dealing fluids are to deeply deal formation with low density hydrochoric acid(the density is 3%) or strong or moderate acid with suitable density,to separate redamage with SLP—1 and the corresponding methods.The average oil production of 4 wells increased to 16.7t/d from none and the injection is 120m 3/d for the injection well after dealing with 6 wells of Zhuang 120 according to the results of research.

Key words: formation damage, evaluation, core, simulation, well stimulation, optimum