文昌10区珠海组低渗储层“甜点”控制因素
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摘要
根据常规物性分析、测井解释、岩石薄片、岩石碳氧同位素等,研究文昌10区珠海组扇三角洲沉积储层厚度与物性分布;考虑沉积环境、成岩作用等,分析不同层段低渗成因及物性影响因素,确定"甜点"储层控制因素与分布.结果表明:胶结强度差异为珠海组一段和二段"甜点"储层控制因素,扇三角洲前缘水下分流河道断裂活动速率较低、略远离南断裂较高压力的低钙质胶结区为"甜点"储层发育区;压实、溶蚀强度与砂岩粒级为珠海组三段"甜点"储层控制因素,水下分流河道/河口坝粗粒度、较弱压实、强溶解带为"甜点"储层发育区.该研究为勘探有利区带预测提供地质依据.
The reservoir is developing in underwater distributary channel and Debouch bar.Reservoir properties are low permeability mainly,moderate permeability partly.By physical property,logging interpretation rock thin-sections and rock carbon/oxygen isotopes,et al,the reasons of low permeability formation and factors of physics quality are analyzed finally from sedimentary facies and diagenesis on the base of understanding reservoir distribution.It is determined that cementation strength is the main controlling factor on reservoir "sweet spots" from the first and second members of Zhuhai formation,development direction of "sweet spots" is where are of low velocity of fault moving slightly away from south fault zone and calcareous cement weak developing with higher pressure in underwater distributary channel.Compaction,erosion intensity and sandstone grain size are the factors of the third member of Zhuhai formation,where are coarse size,weak compaction or strong dissolution of submarine distributary channel and river mouth bar are the zones of as the "dessert" reservoirs.All above are supplying geologic evidence to forecast advantage areas for exploration.
The reservoir is developing in underwater distributary channel and Debouch bar.Reservoir properties are low permeability mainly,moderate permeability partly.By physical property,logging interpretation rock thin-sections and rock carbon/oxygen isotopes,et al,the reasons of low permeability formation and factors of physics quality are analyzed finally from sedimentary facies and diagenesis on the base of understanding reservoir distribution.It is determined that cementation strength is the main controlling factor on reservoir "sweet spots" from the first and second members of Zhuhai formation,development direction of "sweet spots" is where are of low velocity of fault moving slightly away from south fault zone and calcareous cement weak developing with higher pressure in underwater distributary channel.Compaction,erosion intensity and sandstone grain size are the factors of the third member of Zhuhai formation,where are coarse size,weak compaction or strong dissolution of submarine distributary channel and river mouth bar are the zones of as the "dessert" reservoirs.All above are supplying geologic evidence to forecast advantage areas for exploration.
引文
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[10]兰朝利,何顺利,张君峰,等.苏里格气田储层“甜点”控制因素探讨[J].西安石油大学学报:自然科学版,2007,22(1):45-48.Lan Chaoli,He Shunli,Zhang Junfeng,et al.Discussion on the factors of controlling the distribution of the reservoir"sweet spots"of Sulige gasfield[J].Journal of Xi′an Shiyou University:Natural Science Edition,2007,22(1):45-48.
[11]李珊珊,尤丽,魏长飞,等.珠江口盆地西部古近系与新近系储层沉积相研究新进展[R].湛江:中海石油(中国)有限公司湛江分公司,2012.Li Shanshan,You Li,Wei Changfei,et al.New progress of reservoir sedimentary facies from Paleogene system and Neogene system in the western Pearl River Mouth basin[R].Zhanjiang:China National Offshore Oil Limited Corporation-Zhanjiang,2012.
[12]姚合法,林承焰,侯建国,等.苏北盆地黏土矿物转化模式与古地温[J].沉积学报,2004,22(1):29-35.Yao Hefa,Lin Chengyan,Hou Jianguo,et al.The pattern of clay mineral tansformation and palaeo-temperature in north Jiangsu basin[J].Acta Sedimentologica Sinica,2004,22(1):29-35.
[13]戴金星,石昕,卫延召.无机成因油气论和无机成因的气田(藏)概略[J].石油学报,2001,22(6):5-10.DaiJinxing,ShiXin,WeiYanzhao,etal.Summaryoftheabiogenicorigintheoryandtheabiogenicgaspools(fields)[J].Acta Petrolei Sinica,2001,22(6):5-10.
[14]Keith M L,Weber J N.Carbon and oxygen isotopic composition of selected limestones and fossils[J].Geochimica et Cosmochimi-ca Acta,1964,28(10/11):1786-1816.
[15]王清斌,臧春艳,赖维成,等.渤中坳陷古近系中、深部碎屑岩储层碳酸盐胶结物分布特征及成因机制[J].石油与天然气地质,2009,30(4):438-443.Wang Qingbin,Zang Chunyan,Lai Weicheng,et al.Distribution characteristics and origin of carbonate cements in the middle and deep clastic reservoirs of the Paleogene in the Bozhong depression[J].Oil Gas Geology,2009,30(4):438-443.
[16]刘金,宋国奇,郝雪峰,等.惠民凹陷临盘油区断裂胶结带基本特征及形成机制[J].地球科学(中国地质大学学报),2011,36(6):1119-1124.Liu Jin,Song Guoqi,Hao Xuefeng,et al.Characteristics of fault cementation zone and its origin in Linpan oil pool of the Huimin depression[J].Earth Science(Journal of China University of Geosciences),2011,36(6):1119-1124.
[17]Surdam R C,Crossey L J,Hagen E S,et al.Organic-in-organicand sandstone diagenesis[J].AAPG Bulletin,1989(73):1-23.
[18]傅强,夏庆龙,周心怀,等.渤中凹陷古近系沙河街组相对高孔渗储层成因分析——以QHD35-2-1井为例[J].中国海上油气,2010,22(4):221-224.Fu Qiang,Xia Qinglong,Zhou Xinhuai,et al.A genetic analysis of the reservoir with relatively higher porosity and permeability in Paleogene Shahejie formation,Bozhong sag:a case of well QHD 35-2-1[J].China Offshore Oil and Gas,2010,22(4):221-224.
[19]李晶,张云峰,王春香,等.松辽盆地南部十屋断陷营城组碎屑岩储层特征[J].大庆石油学院学报,2008,32(2):8-11.Li Jing,Zhang Yunfeng,Wang Chunxiang,et al.Clastic reservoir characteristics of Yingcheng formation in the Shiwu faulted depression of southern Songliao basin[J].Journal of Daqing Petroleum Institute,2008,32(2):8-11.
[2]王宏博,李湘博,廖建波.鄂尔多斯盆地华庆地区长6油层组超低渗砂体成因分析[J].岩性油气藏,2012,24(5):61-64.Wang Hongbo,Li Xiangbo,Liao Jianbo.Origin of super-low permeability sand bodies of Chang 6oil reservoir set in Huaqing area,Ordos basin[J].Lithologic Reservoirs,2012,24(5):61-64.
[3]孙海涛,钟大康,张湘宁,等.鄂尔多斯盆地长北气田山西组二段低孔低渗储层特征及形成机理[J].沉积学报,2011,29(4):724-733.Sun Haitao,Zhong Dakang,Zhang Xiangning,et al.Characteristics and mechanism of permian Shanxi tight reservoir of Changbei gas field,Ordos basin[J].Acta Sedimentologica Sinica,2011,29(4):724-733.
[4]林煜,徐樟有,吴胜和,等.川西丰谷构造上三叠统须四段特低渗储层成岩储集相与成岩演化序列[J].大庆石油学院学报,2011,35(2):1-8.Lin Yu,Xu Zhangyou,Wu Shenghe,et al.Diagenetic reservoir facies and diagenetia evolutionary sequences of extra-low permeability reservoir in Xu4formation of Fenggu structure in western Sichuan[J].Journal of Daqing Petroleum Institute,2011,35(2):1-8.
[5]廖曦,何绪全,沈浩,等.四川盆地典型构造低渗气藏储层裂缝分布及预测[J].天然气工业,2002(增刊):45-50.Liao Xi,He Xuquan,Shen Hao,et al.Fracture distribution and prediction of low permeability gas reservoirs in some typical structures in Sichuan basin[J].Natural Gas industry,2002(Supp):45-50.
[6]甘军,张迎朝,邓志勇,等.文昌A凹陷古近系低渗凝析气藏成藏特征与成藏模式[J].天然气地球科学,2012,23(6):1060-1069.Gan Jun,Zhang Yingzhao,Deng Zhiyong,et al.Reservoir-forming characteristic and model of the Palaeogene condensate gas reservoir with low permeability in Wenchang A sag[J].Natural Gas Geoscience,2012,23(6):1060-1069.
[7]甘军,张迎朝,邓勇,等.珠江口盆地西部文昌A凹陷古近系天然气富集主控因素与勘探方向[J].中国海上油气,2009,21(6):367-371.Gan Jun,Zhang Yingzhao,Deng Yong,et al.Main controls over Palaeogene natural gas accumulation and its exploration direction in Wenchang A sag,the western Pearl River Mouth basin[J].China Offshore Oil And Gas,2009,21(6):367-371.
[8]尤丽,李才,刘景环.文昌A凹陷珠海组储层区域成岩作用特征及定量评价[J].大庆石油学院学报,2012,36(2):7-13.You Li,Li Cai,Liu Jinghuan.Regional diagenesis feature and quantitative evaluation from Zhuhai formation reservoir in Wenchang A sag[J].Journal of Daqing Petroleum Institute,2012,36(2):7-13.
[9]尤丽,李才,张迎朝,等.文昌A凹陷珠海组储层碳酸盐胶结物分布规律及成因机制[J].石油与天然气地质,2012,33(6):883-889.You Li,Li Cai,Zhang Yingzhao,et al.Distribution and genetic mechanism of carbonate cements in Zhuhai formation reservoir in Wenchang A sag[J].Oil&Gas Geology,2012,33(6):883-889.
[10]兰朝利,何顺利,张君峰,等.苏里格气田储层“甜点”控制因素探讨[J].西安石油大学学报:自然科学版,2007,22(1):45-48.Lan Chaoli,He Shunli,Zhang Junfeng,et al.Discussion on the factors of controlling the distribution of the reservoir"sweet spots"of Sulige gasfield[J].Journal of Xi′an Shiyou University:Natural Science Edition,2007,22(1):45-48.
[11]李珊珊,尤丽,魏长飞,等.珠江口盆地西部古近系与新近系储层沉积相研究新进展[R].湛江:中海石油(中国)有限公司湛江分公司,2012.Li Shanshan,You Li,Wei Changfei,et al.New progress of reservoir sedimentary facies from Paleogene system and Neogene system in the western Pearl River Mouth basin[R].Zhanjiang:China National Offshore Oil Limited Corporation-Zhanjiang,2012.
[12]姚合法,林承焰,侯建国,等.苏北盆地黏土矿物转化模式与古地温[J].沉积学报,2004,22(1):29-35.Yao Hefa,Lin Chengyan,Hou Jianguo,et al.The pattern of clay mineral tansformation and palaeo-temperature in north Jiangsu basin[J].Acta Sedimentologica Sinica,2004,22(1):29-35.
[13]戴金星,石昕,卫延召.无机成因油气论和无机成因的气田(藏)概略[J].石油学报,2001,22(6):5-10.DaiJinxing,ShiXin,WeiYanzhao,etal.Summaryoftheabiogenicorigintheoryandtheabiogenicgaspools(fields)[J].Acta Petrolei Sinica,2001,22(6):5-10.
[14]Keith M L,Weber J N.Carbon and oxygen isotopic composition of selected limestones and fossils[J].Geochimica et Cosmochimi-ca Acta,1964,28(10/11):1786-1816.
[15]王清斌,臧春艳,赖维成,等.渤中坳陷古近系中、深部碎屑岩储层碳酸盐胶结物分布特征及成因机制[J].石油与天然气地质,2009,30(4):438-443.Wang Qingbin,Zang Chunyan,Lai Weicheng,et al.Distribution characteristics and origin of carbonate cements in the middle and deep clastic reservoirs of the Paleogene in the Bozhong depression[J].Oil Gas Geology,2009,30(4):438-443.
[16]刘金,宋国奇,郝雪峰,等.惠民凹陷临盘油区断裂胶结带基本特征及形成机制[J].地球科学(中国地质大学学报),2011,36(6):1119-1124.Liu Jin,Song Guoqi,Hao Xuefeng,et al.Characteristics of fault cementation zone and its origin in Linpan oil pool of the Huimin depression[J].Earth Science(Journal of China University of Geosciences),2011,36(6):1119-1124.
[17]Surdam R C,Crossey L J,Hagen E S,et al.Organic-in-organicand sandstone diagenesis[J].AAPG Bulletin,1989(73):1-23.
[18]傅强,夏庆龙,周心怀,等.渤中凹陷古近系沙河街组相对高孔渗储层成因分析——以QHD35-2-1井为例[J].中国海上油气,2010,22(4):221-224.Fu Qiang,Xia Qinglong,Zhou Xinhuai,et al.A genetic analysis of the reservoir with relatively higher porosity and permeability in Paleogene Shahejie formation,Bozhong sag:a case of well QHD 35-2-1[J].China Offshore Oil and Gas,2010,22(4):221-224.
[19]李晶,张云峰,王春香,等.松辽盆地南部十屋断陷营城组碎屑岩储层特征[J].大庆石油学院学报,2008,32(2):8-11.Li Jing,Zhang Yunfeng,Wang Chunxiang,et al.Clastic reservoir characteristics of Yingcheng formation in the Shiwu faulted depression of southern Songliao basin[J].Journal of Daqing Petroleum Institute,2008,32(2):8-11.