埕岛地区中生界碎屑岩储层特征及综合评价

通过用岩心观察、薄片鉴定、物性分析等实验室分析技术，对埕岛地区中生界开展碎屑岩储层的岩石特征、成岩作用、储层空间以及主控因素等进行了研究。结果表明:埕岛地区中生界碎屑岩储层经历了强烈的压实压溶作用、交代作用、溶解溶蚀作用、充填作用以及裂缝的形成作用。主要储集空间类型为溶解孔隙和裂缝。储层主要受沉积作用、成岩作用以及构造作用的影响，其中沉积作用是主要的控制因素，构造作用次之，成岩作用最小。综合考虑沉积作用、构造作用以及成岩作用对储层的影响，将中生界碎屑岩储层划分为4类，其中Ⅰ类储层最好，Ⅱ₁亚类、Ⅱ₂亚类和Ⅱ₃亚类储层次之，Ⅲ类储层和Ⅳ类储层较差,属于低孔低渗透储层。

Reservoir Characteristics and Comprehensive Evaluation of Mesozoic Clastic Reservoirs in Chengdao Region

This paper studies rock characteristics,diagenesis,reservoir spaces and main control factors of Mesozoic clastic reservoirs in Chengdao region by means of core observation,thin-section and physical property analysis.Results indicate that the Mesozoic clastic reservoirs have experienced strong compaction pressure solution,replacement,dissolution and packing action as well as crack formation.There exist two main reservoir spaces of dissolution pores and fractures.The reservoirs are controlled by sedimentation...