收稿日期: 2013-03-21
修回日期: 2013-04-17
网络出版日期: 2013-08-10
Diagenesis and Diagenetic Facies of Reservoir in He8 Section of Shihezi Formation in East Ⅱ Part of Sulige Gas Field
Received date: 2013-03-21
Revised date: 2013-04-17
Online published: 2013-08-10
通过借助偏光显微镜、扫描电镜、阴极发光等分析测试手段，结合流体包裹体的分析测试结果，以前人的研究为依据，对苏里格气田东二区盒8段储层成岩作用和成岩相进行研究。通过对成岩序列和孔隙演化的分析，将成岩演化划分为4个阶段6个期次，其中早成岩B晚期—中成岩B早期的酸性溶蚀、溶解作用促使次生孔隙发育，是形成建设性成岩相的关键时期。综合岩石学和成岩作用特征，将苏里格气田东二区盒8段储层成岩相划分为:低孔渗净砂岩不稳定组分溶蚀相、特低孔渗净砂岩不稳定组分溶蚀—胶结相、特低孔渗净砂岩不稳定组分溶蚀—较强压实相、致密净砂岩胶结相与致密中细粒（杂）砂岩压实相5种成岩相类型，并建立了每种成岩相的测井曲线特征。通过单井成岩相分析，成岩相在垂向上表现为以下部溶蚀相，上部压实相为主的特征；在平面上表现为其分布受控于沉积相的展布。低孔渗净砂岩不稳定组分溶蚀相作为最有利的成岩相类型，呈孤岛状分布。
王秀平，牟传龙 . 苏里格气田东二区盒8段储层成岩作用与成岩相研究[J]. 天然气地球科学, 2013 , 24(4) : 678 -689 . DOI: 10.11764/j.issn.1672-1926.2013.04.678
According to the results of experimental methods such as polarizing microscope,scan electron microscope and cathode luminescent,and previous published research results,the characteristics of diagenesis and diagenetic facies of reservoir in He8 section of Shihezi Formation in east Ⅱ part of Sulige Gas Field were studied.Meanwhile,the test results of fluid inclusions were also considered.The diagenetic evolution was divided into four stages including six phases.In the process of diagenetic evolution,the dissolution in late period B of early diagenetic stage to early period B of middle diagenetic stage is so important that produces lots of secondary pores,and because of the dissolution,this stage is the key time to form constructive diagenetic facies.According to the study of petrology and diagenesis,there were five diagenetic facies types,and the logging characteristics of each diagenetic facies were set up.After analyzing the diagenetic facies of single well,diagenetic facies in vertical are characterized by dissolution facies in the below and compaction facies in the upper,and the plane distribution is confined by sedimentary facies.The dissolution facies of unstable components of sandstone with low pore and permeability are the most constructive facies which distribute isolatedly.
Key words： Diagenesis; Porosity evolution; Diagenetic facies; Permian System; Sulige Gas Field
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