束鹿凹陷太古界潜山变质岩储层特征

School of Geophysics and Oil Resource, Yangtze University, Wuhan 430100, China School of Geosciences, Yangtze University, Wuhan 430100, China College of Geosciences, China University of Petroleum, Beijing 102249, China

以勘探程度较低的束鹿太古界变质岩潜山为研究对象，结合区域构造特征，利用岩心观察、薄片鉴定及地震资料，综合研究了束鹿凹陷潜山变质岩的类型和储层特征。研究表明：束鹿凹陷潜山变质岩以片麻岩、片岩、变质石英岩为主，为一套中—低级区域变质；潜山储集空间有溶蚀孔和裂缝2种类型，潜山顶面溶蚀孔、缝发育，深部主要为构造裂缝，裂缝的形成与发育程度受岩性、断层、埋深及古风化作用的影响。文中指出束鹿凹陷南部雷家庄潜山带为变质岩储层发育的优势区域。

Starting with the study of Shulu buried hill which has low exploration degree, this article analyzes the regional tectonic characteristics and researches the metamorphic types and reservoir characteristics of metamorphic buried hill in Shulu Depression based on core observation, thin section identification and seismic reflection data. Study shows that the metamorphic rocks are mainly composed of gneiss, schist and metaquartzite, which are a set of middle?鄄low regional metamorphism. The reservoir spaces include dissolved pores and fractures. The dissolved pores and fractures developed in the top part of buried hill and structure fractures are mainly in deep. The fracture formation and development degree are affected by lithology, fault, burial depth and paleoa?鄄weathering process. In this article, the author points out that Leijiazhuang buried hill zone in the south of Shulu Depression is the predominant area for metamorphic oil and gas exploration.

10.6056/dkyqt201502007