普光地区须家河组储层控制因素研究

Study on reservoir controlling factors of Xujiahe Formation in Puguang Area

陈效华 高明健 陈德华

中国石化天然气分公司，北京 100011 中国石油物资公司，北京 100029

Natural Gas Company, SINOPEC, Beijing 100011, China Materials Company, PetroChina, Beijing 100029, China

普光地区须家河组整体上为特低孔、特低渗砂岩储层。研究表明，储层发育的主要控制因素是沉积相和成岩作用。其中，沉积相对储层的控制主要通过粒度和石英矿物质量分数等体现。对储层影响较大的成岩作用主要包括压实作用、胶结作用及溶蚀作用。须家河组构造裂缝局部较发育，裂缝对储层的改造作用是能否产生工业气流的关键作用。

Xujiahe Formation in Puguang Area belongs to ultra-low porosity and ultra-low permeability sandstone reservoirs on the whole. The research result shows that the main controlling factors of reservoir development are the sedimentary facies and diagenesis. Among them, the controlling of sedimentary facies against reservoir is reflected mainly through the change of grain size and quartz content. The influence of reservoir diagenesis mainly includes compaction, cementation and denudation. The structural fractures developed well in the local part in Xujiahe Formation. The effect of the fractures on reservoir is a key of producing the commercial gas flow.