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中非地区B盆地下白垩统储层特征及其控制因素
引用本文:陈忠民,卞德智,潘校华,黄先雄,肖坤叶. 中非地区B盆地下白垩统储层特征及其控制因素[J]. 西北大学学报(自然科学版), 2006, 36(6): 976-981
作者姓名:陈忠民  卞德智  潘校华  黄先雄  肖坤叶
作者单位:中国石油大学石油天然气成藏机理教育部重点实验室/盆地与油藏研究中心,中国石油天然气勘探开发公司海外研究中心,中国石油天然气勘探开发公司海外研究中心,中国石油天然气勘探开发公司海外研究中心,中国石油天然气勘探开发公司海外研究中心 北京102249,中国石油天然气勘探开发公司海外研究中心北京100083,北京100083,北京100083,北京100083,北京100083
基金项目:中国石油天然气集团公司资助项目(04B60204)
摘    要:目的分析中非地区B盆地下白垩统沉积环境、储层特征及其控制因素。方法利用沉积学、储层地质学理论及分析技术。结果B盆地中下白垩统碎屑岩储层大多形成在河流—三角洲、近岸水下扇等沉积环境中。碎屑岩储层岩性主要为中、细砂岩,不同地区、不同类型储层物性存在较大差异;物性最好的储层为河道、(扇)三角洲前缘水下分流河道及河口坝砂体。结论储层物性主要受压实作用、碳酸盐溶解与胶结作用及沉积环境四大因素控制,其中压实、溶蚀作用及胶结作用是主要控制因素,而沉积环境对物性的影响主要表现在控制原生孔隙的发育程度,并进一步控制溶蚀、胶结等成岩作用。

关 键 词:碎屑岩储层  下白垩统  B盆地  中非地区
文章编号:1000-274X(2006)06-0976-06
收稿时间:2005-05-11
修稿时间:2005-05-11

Clastic reservoir characteristics and their controlling factors of the Lower Cretaceous in B Basin, central Africa region
CHEN Zhong-min,BIAN De-zhi,PAN Xiao-hua,HUANG Xian-xiong,XIAO Kun-ye. Clastic reservoir characteristics and their controlling factors of the Lower Cretaceous in B Basin, central Africa region[J]. Journal of Northwest University(Natural Science Edition), 2006, 36(6): 976-981
Authors:CHEN Zhong-min  BIAN De-zhi  PAN Xiao-hua  HUANG Xian-xiong  XIAO Kun-ye
Abstract:Aim To analyze sedimentary environment,the characteristics of clastic reservoirs and their controlling factors of the Lower Cretaceous in B Basin,central region.Methods Analyzing sedimentary environment,the characteristics of clastic reservoirs and their controlling factors of the Lower Cretaceous in B Basin,Central region based on sedimentology and reservoir geology theories and analyzing technique.Results The clastic reservoirs of the Lower Cretaceous are mostly formed in sedimentary environments as fluvial-Delta,sub-fans in B Basin,Central region.The clastic reservoir is mainly composed of medium-fine sandstones.The micro-facies of channel,sub-distributary channel and distributary mouth bar are relatively good reservoir.Conclusion The reservoir quality is controlled by four factors as follows: compaction,carbonate dissolution,cementations and sedimentary environment.The main reservoir quality controlling factors are compaction,dissolution and cementations.The effect of sedimentary environment on reservoir quality manifests the development of primary pore,and its control on diagenesis such as dissolutions,cementations.
Keywords:clastic reservoir  Lower Cretaceous  B Basin  central Africa region  
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