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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0.5×10-3μm2的样品通常分布于粒度中值在0.50 mm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。

Research on the Basic Characteristics and Control Factors of High-quality Reservoir in Sulige Gas Field

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.