摘要
大南盘江地区泥盆—二叠系生物礁(滩)广泛分布,不同时代、不同相带、不同岩性的礁(滩)储集层,具有不同的储集物性,但储集性能整体较差,表现为低孔低渗的特征。礁(滩)储集空间孔隙类型多样,可分为3大类15小类。研究表明,原生孔隙的发育受控于沉积环境,次生孔隙主要由成岩作用决定,构造和溶蚀作用是形成溶蚀孔、洞、缝的主要因素,对本区礁(滩)储层的储集空间起至关重要的作用。
Reefs of Devonian Permian were widely distributed in Nanpanjiang. Various times, facies belts, and lithologies of reefs have different reservoir physical properties. But reservoir performance is poor as a whole and manifests as low - porosity and low - permeability. The reservoir of reef shoal has variety of pores including 3 cate gories and 15 subclas- ses. Research results show that development of primary pore is controlled by sedimentary environment. Secondary pore is mainly determined by diagenesis. Tectonism and dissolution are main factors of the formation of dissolved pore, cave and fracture, and play a vital role in the reservoir space of reef shoal in this area.
出处
《复杂油气藏》
2013年第1期6-11,共6页
Complex Hydrocarbon Reservoirs
关键词
泥盆-二叠系
生物礁(滩)
储集特征
控制因素
大南盘江
Devonian Permian
organic reef shoal
reservoir characteristics
control factors
Nanpanjiang
