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鄂尔多斯盆地西峰油田三叠系延长组长6-8段储层砂岩成岩作用研究
引用本文:史基安,王金鹏,毛明陆,王琪,郭正权,郭雪莲,卢龙飞.鄂尔多斯盆地西峰油田三叠系延长组长6-8段储层砂岩成岩作用研究[J].沉积学报,2003,21(3):373-380.
作者姓名:史基安  王金鹏  毛明陆  王琪  郭正权  郭雪莲  卢龙飞
作者单位:1.中国科学院兰州地质研究所气体地球化学重点实验室 兰州 730000;
基金项目:国家重点基础研究发展计划(973计划),国家自然科学基金,中国科学院知识创新工程项目,G1999043310,40072050、40272065,KZCX3-SW-128,,,
摘    要:鄂尔多斯盆地西峰油田的储集岩-三叠系延长组长 6- 8段砂岩是典型的低孔低渗储集岩,具有粒径细、成分成熟度低、磨圆度较差、分选性较好的特点。运用薄片鉴定、粘土矿物、稳定同位素分析及物性分析等资料,研究了延长组长 6- 8段的成岩作用特征,分析了它们对储层物性的影响状况,确定了储层砂岩的成岩作用阶段,指出西峰油田优质储层的发育取决于储集砂岩中粘土膜形成作用、烃类侵位作用和溶蚀作用的发育状况.

关 键 词:鄂尔多斯盆地    三叠系延长组    成岩作用
文章编号:1000-0550(2003)03-0373-08
收稿时间:2003-01-21
修稿时间:2003年1月21日

Reservoir Sandstone Diagenesis of Memeber 6 to 8 in Yanchang Formation (Triassic), Xifeng Oilfield, Ordos Basin
SHI Ji-an,WANG Jin-peng,MAO Ming-lu,WANG Qi,GUO Zheng-quan,GUO Xue-lian,LU Long-fei.Reservoir Sandstone Diagenesis of Memeber 6 to 8 in Yanchang Formation (Triassic), Xifeng Oilfield, Ordos Basin[J].Acta Sedimentologica Sinica,2003,21(3):373-380.
Authors:SHI Ji-an  WANG Jin-peng  MAO Ming-lu  WANG Qi  GUO Zheng-quan  GUO Xue-lian  LU Long-fei
Institution:1.State Key Laboratory of Geochemistry, Lanzhou Institute of Geol ogy, Chinese Academy of Science, Lanzhou 730000;2.Research Institute of Exploration & Development, Changqing Oilfield Company, Petrochina,Xi'an 710004
Abstract:Reservoir sandstone of Member 6 to 8 in Yanchang Formation (Triassic) in Xifeng oilfield of Ordos basin is typical of low porosity and low permeability, which has the characteristics of fine grain size, low compositional maturity, poor roundness and good sorting. Based on thin-section observation and analyses of c lay minerals, stable isotopes and physical property, this article takes researc h on diagenetic characteristics in Member 6 to 8 of Yanchang Formation, analyses their influence on reservoir physical property and determines diagenetic stage of reservoir sandstone. Meanwhile, this article indicates that the development o f high quality reservoir is dependent on the development of clay film, hydrocabo n emplacement grain dissolution in reservoir sandstone.
Keywords:Ordos Basin    Yanchang Formation    diagenesis
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