【摘要】 苏里格气田优质储层具有埋藏深度大、深埋时间长、成岩演化阶段高、物性好的特点。该套储层的分布主要受沉积环境、石英含量、颗粒粒度、埋藏史、成岩作用、裂缝发育程度、异常高压等因素的控制。其中分流河道为最有利的微相 ;石英含量大于 90 %、特别是大于 95 %时 ,孔渗明显变好 ;孔隙度大于 8%、渗透率大于 0 .5×10 -3 μm2 的样品通常分布于粒度中值在 0 .5 0mm以上的粗砂岩中 ;裂缝对储层物性有较大的改善 ;异常高压对优质储层的发育具有一定的保护作用 ,应特别加强对裂缝的研究。更多还原

【Abstract】 The reservoir in Sulige gas field is of these characteristics,such as great burial depth ,long deep-burial time,high diagenetic evolution stages and good petrophysical property.The distribution of high-quality reservoir is controlled by the factors as sedimentary environment,quartz content,grain size,burial history,diagenesis,fracture-developed degree and abnormal high formation pressure,etc.It is concluded that the distributary channel is the most favourable microfacies;the porosity and permeability become better obviouly when the quartz content is more than 90%,especially over 95%;the samples which porosity is more than 8% and permeability more than 0.5×10 -3μm2 are generally distributed in the coarse sand-stones with grain size mid-value of above 0.50 mm;fractures can greatly improve the petrophysical property;and the abnormal high formation pressures played a preservation role in the development of the high-quality reservoir,so that the research on fractures should be specially strengthened.更多还原