摘要
鄂尔多斯盆地下寺湾区山西组致密砂岩气有较好的勘探潜力,胶结作用在研究区广泛发育,为了探究该区山西组胶结作用及其对储层物性的影响,通过岩心资料、铸体薄片和扫描电镜等多种测试手段对山西组填隙物成分、胶结作用和物性特征进行研究。结果表明:山西组胶结作用主要包括硅质胶结作用、碳酸盐胶结作用和黏土矿物胶结作用;黏土胶结物、硅质胶结物及碳酸盐胶结物使得储层致密化,使储层的孔隙发育变差,研究结果对该地区进一步的勘探有一定借鉴意义。
Tight sandstone gas of Shanxi Formation in Xiasiwan District of Ordos Basin has good exploration potential. Cementation is widely developed in the study area. In order to explore the cementation of Shanxi Formation in this area and its influence on reservoir physical properties, core data and casting thin sections are used. Various testing methods such as scanning electron microscopy, etc. were used to study the composition, cementation and physical properties of the interstitial materials in Shanxi Formation. The results show that the cementation of Shanxi Formation mainly includes siliceous cementation, carbonate cementation and clay mineral cementation;clay cement, siliceous cement and carbonate cement make the reservoir dense and make the reservoir pores. The development becomes worse, and the research results have certain reference significance for further exploration in this area.
作者
孙震
王凤琴
SUN Zhen;WANG Feng-qin(Xi’an Shiyou University,Xi’an 710065,China)
出处
《河北地质大学学报》
2022年第2期62-67,共6页
Journal of Hebei Geo University
基金
国家科技重大专项(2017ZX05039-001)。
关键词
山西组
胶结作用
物性特征
Shanxi Formation
cementation
physical properties
