高磨地区灯影组室内酸化效果评价方法探讨

发布时间：2018-01-27 23:27

本文关键词： 高磨地区长岩心酸化效果转向酸胶凝酸　出处：《石油与天然气化工》2017年05期 　论文类型：期刊论文

【摘要】：针对高磨地区震旦系灯影组裂缝-孔洞型为主的储层特征,常规的短岩心酸化效果主要模拟解除储层的表皮伤害,而对于储层的深度酸化模拟无法满足需求。为了更好地指导酸液的选择,从长岩心处理、流体选择、实验参数选择等方面进行研究,探讨了针对高磨地区灯影组的长岩心酸化效果评价方法,并通过对比转向酸与胶凝酸酸化效果室内实验,明确了转向酸对低渗储层无法突破长岩心,对高渗储层酸化效果显著,渗透率提高了12.1倍;胶凝酸对低渗储层与高渗储层酸化效果均显著,渗透率分别提高5.6倍与20倍。现场应用4井次,其改造效果与室内评价结果相吻合,从而说明长岩心酸化效果评价方法对高磨地区灯影组储层酸液的选择具有一定的指导作用。
[Abstract]:In view of the reservoir characteristics of the fissure-hole type in the Dengying formation of the Sinian system in Gaomo area, the conventional short core acidizing effect is mainly used to simulate and relieve the skin damage of the reservoir. In order to better guide the selection of acid, the study is carried out from the aspects of long core treatment, fluid selection, experimental parameters selection and so on. This paper discusses the evaluation method of acidizing effect of long core for Dengying formation in Gaomo area, and by comparing the effect of turning acid and gelation acid, it is clear that turning acid can not break through long core in low permeability reservoir. Acidizing effect on high permeability reservoir is remarkable, permeability is increased by 12.1 times; The acidizing effect of cementitious acid on low permeability reservoir and high permeability reservoir is remarkable, the permeability is increased by 5.6 times and 20 times respectively. The results show that the evaluation method of acidizing effect of long core has a certain guiding effect on the selection of acid solution in reservoir of Dengying formation in Gaomo area.
【作者单位】：中国石油西南油气田公司天然气研究院;
【基金】：国家重大科技专项“四川盆地大型碳酸盐岩气田开发示范工程”(2016ZX05052)
【分类号】：TE357.2
【正文快照】： 随着四川盆地高磨地区勘探开发的不断发展,增产改造酸液体系的适应性选择对进一步提高其开发效率越来越重要。高磨地区灯影组储集层的孔隙度、渗透率极低,非均质性极强。常规的短岩心酸化效果实验主要是模拟解除储层表皮伤害,大规模酸压的目的是为了进一步增加酸液有效作用

【相似文献】