DISTRIBUTION REGULARITY OF HIGH-QUALITY RESERVOIRS IN THE EASTERN SULIGE GAS FIELD, THE ORDOS BASIN
-
摘要: 分析优质储层的分布规律及其控制因素,对于加快天然气的勘探开发进程具有十分重要的现实意义。通过岩心观察、铸体薄片鉴定、粒度分析、扫描电镜、毛管压力分析以及包裹体测温等分析测试手段,根据成岩作用和成岩相特征,探讨鄂尔多斯盆地苏里格气田东部优质储层的分布规律。研究表明,碎屑颗粒粒度、砂岩类型以及成岩作用的差异是影响储层物性的主要因素。研究区目的层可划分出9种成岩相带,主要以优质储层与非优质储层的组合形式出现。位于致密相之间的石英加大胶结混合孔隙相、自生高岭石胶结晶间孔相以及粘土杂基混合充填溶蚀相,是发育优质储层的良好成岩相带。微裂缝的发育以及溶解作用的发生,是形成优质储层的关键因素。Abstract: It is of practical significance in accelerating the progress of natural gas exploration and deve-lopment to analyze controlling factors and spatial distribution patterns of high-quality reservoirs.Major controlling parameters of diagenesis and diagenetic facies on spatial distribution patterns of high-quality reservoirs of Upper Paleozoic in the eastern Sulige Gas Field of the Ordos Basin are discussed in this paper,based upon detailed description and observation of drilling cores,accompanied with various analytical and measurements including identification and quantitative statistics of thin sections under microscope,grain size analysis,electron scan microscope(ESM),capillary pressure analysis and measurement of homogeneous temperature for inclusions.Research shows that detrital grain size,sandstone types and diagenetic differences of sandstones are the main controlling factors for reservoir quality.Nine diagenetic facies can be recognized.The quartz overgrowth cementation mixture pores diagenetic facies,authigenic kaolinite cementation inter-crystal pores diagenetic facies,and clay matrix filling dissolution facies distributed between dense diagenetic facies are the most profitable diagenetic zones for high-quality reservoirs.Micro-fractures and dissolution are the key parameters for high-quality reservoirs formation.
-
Key words:
- diagenesis /
- diagenetic facies /
- high-quality reservoirs /
- eastern Sulige Gas Field /
- the Ordos Basin
-
[1] 李会军,吴泰然,马宗晋等.苏里格气田优质储层的控制因素[J].天然气工业,2004,24(8):12～13,16 [2] 赵文智,汪泽成,陈孟晋等.鄂尔多斯盆地上古生界天然气优质储层形成机理探讨[J].地质学报,2005,79(6):833 [3] 罗月明,刘伟新,谭学群等.鄂尔多斯大牛地气田上古生界储层成岩作用评价[J].石油实验地质,2007,29(4):384～390 [4] 中国石油化工集团公司油气勘探开发继续教育无锡基地.石油地质样品分析测试技术及应用[M].北京:石油工业出版社,2006.218～219 [5] 刘建清,赖兴运,于炳松等.成岩作用的研究现状及展望[J].石油实验地质,2006,28(1):65～72,77 [6] 赵林,夏新宇,戴金星等.鄂尔多斯盆地上古生界天然气富集的主要控制因素[J].石油实验地质,2000,22(2):136～139,166 [7] 张铭,邓宏文,崔宝琛等.陕甘宁盆地乌审旗气田上古生界高产控制因素研究[J].石油实验地质,2002,24(2):115～118,128 [8] 任战利.中国北方沉积盆地构造热演化史研究[M].北京:石油工业出版社,1999.67～70 [9] 候洪斌,牟泽辉,朱宏权.鄂尔多斯盆地北部上古生界天然气成藏条件与勘探方向[M].北京:石油工业出版社,2004.126～128 [10] Beard D C,Weyl P K.Influence of texture on porosity and permeability of unconsolidated sand[J].AAPG Bulletin,1973,57(2):349～369 [11] Morad S,Ketzer J M,De Ros F.Spatial and temporal distribution of diagenetic alterations in siliciclastic rocks:Implications for mass transfer in sedimentary basins[J].Sedimento-logy,2000,47:95～120 [12] El-ghali M A K,Mansurbeg H,Morad S,et al.Distribution of diagenetic alterations in fluvial and paralic deposits within sequence stratigraphic framework:Evidence from the Petrohan Terrigenous Group and the Svidol Formation,Lower Triassic,NW Bulgaria[J].Sedimentary Geology,2006,190:299～321 -
计量
- 文章访问数: 744
- HTML全文浏览量: 62
- PDF下载量: 303
- 被引次数: 0
下载:
苏公网安备32021102000780号