柴达木盆地昆北油田切16区路乐河组沉积特征与储层预测
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摘要
柴达木盆地西南部昆北构造带发现以古近系路乐河组陆源碎屑岩为储层的油田。根据昆北油田切16区探井岩心观察、测录井资料分析,结合岩石铸体薄片观测、电子扫描显微镜镜下分析等结果,初步确定了昆北油田切16区路乐河组主要发育两期辫状三角洲体系;路乐河组储层岩石类型分布相对稳定,成分成熟度较低,主要为岩屑长石砂岩,岩屑成份以花岗岩为主,骨架偏刚性,储层中杂基含量相对较高、胶结物含量较低;储集层孔隙较发育且分布相对较均匀,孔隙连通性较好,孔隙类型主要以残余原生粒间孔为主;储层物性受沉积相带分布,成岩作用以及杂基含量共同控制,压实作用是储层物性的主控因素。通过结合主力油层段测井响应特征及层控地震振幅属性分析,认为昆北油田切16区、切15井与切169井的东部以及切20井的西南部的构造相对较高部位为今后有利勘探目标。
Terrigenous clastic rock reservoir is discovered in the Paleogene Lulehe Formation at Kunbei oilfield,southwestern Qaidam Basin. Basing on well coring and logging data,sediment and reservoir characteristics of Lulehe Formation in Qie 16 block of Kunbei oilfield have been studied by means of the casting thin sections and scanning electron microscope. The result shows that two braided river delta facies sediments develop in Kunbei oilfield; rock types of the Lulehe Formation reservoir are relatively stable and the clastic rocks are mainly lithic feldspar sandstones mainly composed of granite,with low compositional maturity and rigid backbone. The content of matrix content is relatively high while cement is low. As a low-porosity and low-permeability reservoir,it is mostly controlled by sedimentary microfacies, matrix contents and diagenesis, such as compaction, cementation and dissolution, dominated by compaction. The reservoir pores are well developed with uniform distribution and good connectivity while the types of the pore are mainly primary intergranular pore. Combined with log responses character of the mainly reservoir and strata bound seismic amplitude attribute,the structural hights in the east side of well Q15 to well Q169 and in the southwestern part of well Q20 are believed to be the favorable aims for oil exploration.
Terrigenous clastic rock reservoir is discovered in the Paleogene Lulehe Formation at Kunbei oilfield,southwestern Qaidam Basin. Basing on well coring and logging data,sediment and reservoir characteristics of Lulehe Formation in Qie 16 block of Kunbei oilfield have been studied by means of the casting thin sections and scanning electron microscope. The result shows that two braided river delta facies sediments develop in Kunbei oilfield; rock types of the Lulehe Formation reservoir are relatively stable and the clastic rocks are mainly lithic feldspar sandstones mainly composed of granite,with low compositional maturity and rigid backbone. The content of matrix content is relatively high while cement is low. As a low-porosity and low-permeability reservoir,it is mostly controlled by sedimentary microfacies, matrix contents and diagenesis, such as compaction, cementation and dissolution, dominated by compaction. The reservoir pores are well developed with uniform distribution and good connectivity while the types of the pore are mainly primary intergranular pore. Combined with log responses character of the mainly reservoir and strata bound seismic amplitude attribute,the structural hights in the east side of well Q15 to well Q169 and in the southwestern part of well Q20 are believed to be the favorable aims for oil exploration.
引文
Chen GP,Wan Y,Zhang PP,Xia MQ and Zhang DW.2010.Trapfeatures of the northern Kunlun Faults Zone in Qaidam Basin.Journal of Southwest Petroleum University(Science&TechnologyEdition),32(4):39-43(in Chinese with English abstract)
Chen XH,Dang YQ,Yin A,Wang LQ,Jiang WP,Jiang RB,Zhou SP,Liu MD,Ye BR,Zhang M,Ma LX and Li L.2010.Basin-mountain Coupling and Tectonic Evolution of Qaidam Basin and ItsPeripheral Mountain.Beijing:Geological Publishing House(inChinese)
Dang YQ,Yin CM and Zhao DS.2004.Sedimentary facies of thePaleogene and Neogene in western Qaidam Basin.Journal ofPalaeogeography,6(3):297-305(in Chinese with Englishabstract)
Fang X,Jiang B and Zhang YS.2006.Faulted structure and hydrocarbonaccumulation in western Qaidam Basin.Oil&Gas Geology,27(1):56-61(in Chinese with English abstract)
Fu L,Zhang ZY,Fu ST,Gong QS and Huang GP.2010.Characteristicsof the sedimentary facies and reservoirs in Lulehe Formation of theKunbei oilfield in Qaidam Basin,China.Journal of ChengduUniversity of Technology(Science&Technology Edition),37(5):494-500(in Chinese with English abstract)
Fu ST.2010.Key controlling factors of oil and gas accumulation in thewestern Qaidam Basin and its implications for favorable explorationdirection.Acta Sedimentologica Sinica,28(2):373-378(inChinese with English abstract)
Fu ST,Xu LG,Gong QL and LüYS.2010.Petroleum geologiccharacteristics of southwestern Qaidam Basin and recommendationsfor further exploration and study.China Petroleum Exploration,15(1):6-10(in Chinese with English abstract)
Gong QS,Shou JF,Huang GP,Li SM and Wang YQ.2012.Sedimentary characteristic of braided delta in Lulehe Formation ofKunbei oilfield in Qaidam Basin.Chinese Journal of Geology,47(1):116-128(in Chinese with English abstract)
Guan JY,Li HG,Shen Y,Chen HQ,Wang GH,Qu YW and Tan W.2012.Seismic interpretation in Kunbei area of Qaidam basin.OilGeophysical Prospecting,47(1):157-165(in Chinese withEnglish abstract)
Jiang B,Si D,Wang LS,Yin CM,Zhang YS and Wu YY.2004.Oil/gas reservoiring characteristics and beneficial reservoir body prediction in the southwest part of Qaidam Basin.Natural GasIndustry,24(9):8-10(in Chinese with English abstract)
Li L,Mou ZH,Wang LQ and Xu F.2011.Characteristics andcontrolling factors of E1+2clastic reservoir in Qie6block of Kunbeioilfield in Qaidam Basin.Lithologic Reservoirs,23(4):75-80(inChinese with English abstract)
Liu WL,Niu YL,Li G and Guo YR.2002.Seismic attribute extractionand effectiveness analysis of multi-attribute reservoir prediction.Geophysical Prospecting for Petroleum,41(1):100-106(inChinese with English abstract)
Ma DD,Shou JF,Hu Y,Wang SY and Xu N.2005a.Analysis of themain controlling factors on the formation of clastic reservoirs in thesouthwestern area of the Qaidam Basin.Acta SedimentologicaSinica,23(4):589-595(in Chinese with English abstract)
Ma DD,Wang SY,Shou JF,Chen ZL,Qin YJ and Tang GM.2005b.Sandstone reservoirs of the Paleogene and Neogene in southwesternQaidam Basin.Journal of Palaeogeography,7(4):519-528(inChinese with English abstract)
Yang ZL,Peng LC,Chen QL,Guo JY and Huang YF.2007.Seismicattributes analysis and lithological reservoir exploration.GeophysicalProspecting for Petroleum,46(2):131-136(in Chinese withEnglish abstract)
Yin A,Dang YQ,Zhang M,McRivette MW,Burgess WP and Chen XH.2007.Cenozoic tectonic evolution of Qaidam basin and itssurrounding regions(part2):Wedge tectonics in southern QaidamBasin and the Eastern Kunlun Range.Special Paper,Geol.Soc.Am.,433:369-390
Yin A,Dang YQ,Zhang M,Chen XH and McRivette MW.2008.Cenozoic tectonic evolution of the Qaidam basin and its surroundingregions(part3):Structural geology,sedimentation,and regionaltectonic reconstruction.Geol.Soc.Am.Bull.,120(7-8):847-876
Yin CM,Tian LY,Ren SM and Ma YS.2011.Structural characteristicsof the northern foreland belt of East Kunlun Mountains and theirsignificance for oil and gas accumulation.Geological Bulletin ofChina,30(8):1275-1282(in Chinese with English abstract)
陈国民,万云,张培平,夏敏全,张道伟.2010.柴达木盆地昆北断阶带圈闭特征.西南石油大学学报(自然科学版),32(4):39-43
陈宣华,党玉琪,尹安,汪立群,蒋武朋,蒋荣宝,周苏平,刘明德,叶宝荣,张敏,马立协,李丽.2010.柴达木盆地及其周缘山系盆山耦合与构造演化.北京:地质出版社
党玉琪,尹成明,赵东升.2004.柴达木盆地西部地区古近纪与新近纪沉积相.古地理学报,6(3):297-305
方向,江波,张永庶.2006.柴达木盆地西部地区断裂构造与油气聚集.石油与天然气地质,27(1):56-61
付玲,张子亚,付锁堂,宫清顺,黄革萍.2010.柴达木盆地昆北油田路乐河组沉积相及储层特征.成都理工大学学报(自然科学版),37(5):494-500
付锁堂.2010.柴达木盆地西部油气成藏主控因素与有利勘探方向.沉积学报,28(2):373-378
付锁堂,徐礼贵,巩庆林,吕友生.2010.柴西南区石油地质特征及再勘探再研究的建议.中国石油勘探.15(1):6-10
宫清顺,寿建峰,黄革萍,李森明,王艳清.2012.柴达木盆地昆北油田路乐河组辫状三角洲沉积特征.地质科学,47(1):116-128
管俊亚,李洪革,沈亚,陈海清,王光华,屈燕微,谭伟.2012.柴达木盆地昆北地区的地震解释技术.石油地球物理勘探,47(1):157-165
江波,司丹,王兰生,尹成明,张永庶,吴因业.2004.柴西南地区油气成藏特征及有利储层预测.天然气工业,24(9):8-10
李乐,牟中海,汪立群,徐峰.2011.柴达木盆地昆北油田切6区E1+2碎屑岩储层特征及其控制因素.岩性油气藏,23(4):75-80
刘文岭,牛彦良,李刚,郭彦如.2002.多信息储层预测地震属性提取与有效性分析方法.石油物探,41(1):100-106
马达德,寿建峰,胡勇,王少依,徐宁.2005a.柴达木盆地柴西南区碎屑岩储层形成的主控因素分析.沉积学报,23(4):589-595
马达德,王少依,寿建峰,陈子炓,秦玉娟,唐光明.2005b.柴达木盆地西南区古近系及新近系砂岩储层.古地理学报,7(4):519-528
杨占龙,彭立才,陈启林,郭精义,黄云峰.2007.地震属性分析与岩性油气藏勘探.石油物探,46(2):131-136
尹成明,田丽艳,任收麦,马寅生.2011.东昆仑山北缘山前构造带的特征及其对油气成藏的意义.地质通报,30(8):1275-1282
Chen XH,Dang YQ,Yin A,Wang LQ,Jiang WP,Jiang RB,Zhou SP,Liu MD,Ye BR,Zhang M,Ma LX and Li L.2010.Basin-mountain Coupling and Tectonic Evolution of Qaidam Basin and ItsPeripheral Mountain.Beijing:Geological Publishing House(inChinese)
Dang YQ,Yin CM and Zhao DS.2004.Sedimentary facies of thePaleogene and Neogene in western Qaidam Basin.Journal ofPalaeogeography,6(3):297-305(in Chinese with Englishabstract)
Fang X,Jiang B and Zhang YS.2006.Faulted structure and hydrocarbonaccumulation in western Qaidam Basin.Oil&Gas Geology,27(1):56-61(in Chinese with English abstract)
Fu L,Zhang ZY,Fu ST,Gong QS and Huang GP.2010.Characteristicsof the sedimentary facies and reservoirs in Lulehe Formation of theKunbei oilfield in Qaidam Basin,China.Journal of ChengduUniversity of Technology(Science&Technology Edition),37(5):494-500(in Chinese with English abstract)
Fu ST.2010.Key controlling factors of oil and gas accumulation in thewestern Qaidam Basin and its implications for favorable explorationdirection.Acta Sedimentologica Sinica,28(2):373-378(inChinese with English abstract)
Fu ST,Xu LG,Gong QL and LüYS.2010.Petroleum geologiccharacteristics of southwestern Qaidam Basin and recommendationsfor further exploration and study.China Petroleum Exploration,15(1):6-10(in Chinese with English abstract)
Gong QS,Shou JF,Huang GP,Li SM and Wang YQ.2012.Sedimentary characteristic of braided delta in Lulehe Formation ofKunbei oilfield in Qaidam Basin.Chinese Journal of Geology,47(1):116-128(in Chinese with English abstract)
Guan JY,Li HG,Shen Y,Chen HQ,Wang GH,Qu YW and Tan W.2012.Seismic interpretation in Kunbei area of Qaidam basin.OilGeophysical Prospecting,47(1):157-165(in Chinese withEnglish abstract)
Jiang B,Si D,Wang LS,Yin CM,Zhang YS and Wu YY.2004.Oil/gas reservoiring characteristics and beneficial reservoir body prediction in the southwest part of Qaidam Basin.Natural GasIndustry,24(9):8-10(in Chinese with English abstract)
Li L,Mou ZH,Wang LQ and Xu F.2011.Characteristics andcontrolling factors of E1+2clastic reservoir in Qie6block of Kunbeioilfield in Qaidam Basin.Lithologic Reservoirs,23(4):75-80(inChinese with English abstract)
Liu WL,Niu YL,Li G and Guo YR.2002.Seismic attribute extractionand effectiveness analysis of multi-attribute reservoir prediction.Geophysical Prospecting for Petroleum,41(1):100-106(inChinese with English abstract)
Ma DD,Shou JF,Hu Y,Wang SY and Xu N.2005a.Analysis of themain controlling factors on the formation of clastic reservoirs in thesouthwestern area of the Qaidam Basin.Acta SedimentologicaSinica,23(4):589-595(in Chinese with English abstract)
Ma DD,Wang SY,Shou JF,Chen ZL,Qin YJ and Tang GM.2005b.Sandstone reservoirs of the Paleogene and Neogene in southwesternQaidam Basin.Journal of Palaeogeography,7(4):519-528(inChinese with English abstract)
Yang ZL,Peng LC,Chen QL,Guo JY and Huang YF.2007.Seismicattributes analysis and lithological reservoir exploration.GeophysicalProspecting for Petroleum,46(2):131-136(in Chinese withEnglish abstract)
Yin A,Dang YQ,Zhang M,McRivette MW,Burgess WP and Chen XH.2007.Cenozoic tectonic evolution of Qaidam basin and itssurrounding regions(part2):Wedge tectonics in southern QaidamBasin and the Eastern Kunlun Range.Special Paper,Geol.Soc.Am.,433:369-390
Yin A,Dang YQ,Zhang M,Chen XH and McRivette MW.2008.Cenozoic tectonic evolution of the Qaidam basin and its surroundingregions(part3):Structural geology,sedimentation,and regionaltectonic reconstruction.Geol.Soc.Am.Bull.,120(7-8):847-876
Yin CM,Tian LY,Ren SM and Ma YS.2011.Structural characteristicsof the northern foreland belt of East Kunlun Mountains and theirsignificance for oil and gas accumulation.Geological Bulletin ofChina,30(8):1275-1282(in Chinese with English abstract)
陈国民,万云,张培平,夏敏全,张道伟.2010.柴达木盆地昆北断阶带圈闭特征.西南石油大学学报(自然科学版),32(4):39-43
陈宣华,党玉琪,尹安,汪立群,蒋武朋,蒋荣宝,周苏平,刘明德,叶宝荣,张敏,马立协,李丽.2010.柴达木盆地及其周缘山系盆山耦合与构造演化.北京:地质出版社
党玉琪,尹成明,赵东升.2004.柴达木盆地西部地区古近纪与新近纪沉积相.古地理学报,6(3):297-305
方向,江波,张永庶.2006.柴达木盆地西部地区断裂构造与油气聚集.石油与天然气地质,27(1):56-61
付玲,张子亚,付锁堂,宫清顺,黄革萍.2010.柴达木盆地昆北油田路乐河组沉积相及储层特征.成都理工大学学报(自然科学版),37(5):494-500
付锁堂.2010.柴达木盆地西部油气成藏主控因素与有利勘探方向.沉积学报,28(2):373-378
付锁堂,徐礼贵,巩庆林,吕友生.2010.柴西南区石油地质特征及再勘探再研究的建议.中国石油勘探.15(1):6-10
宫清顺,寿建峰,黄革萍,李森明,王艳清.2012.柴达木盆地昆北油田路乐河组辫状三角洲沉积特征.地质科学,47(1):116-128
管俊亚,李洪革,沈亚,陈海清,王光华,屈燕微,谭伟.2012.柴达木盆地昆北地区的地震解释技术.石油地球物理勘探,47(1):157-165
江波,司丹,王兰生,尹成明,张永庶,吴因业.2004.柴西南地区油气成藏特征及有利储层预测.天然气工业,24(9):8-10
李乐,牟中海,汪立群,徐峰.2011.柴达木盆地昆北油田切6区E1+2碎屑岩储层特征及其控制因素.岩性油气藏,23(4):75-80
刘文岭,牛彦良,李刚,郭彦如.2002.多信息储层预测地震属性提取与有效性分析方法.石油物探,41(1):100-106
马达德,寿建峰,胡勇,王少依,徐宁.2005a.柴达木盆地柴西南区碎屑岩储层形成的主控因素分析.沉积学报,23(4):589-595
马达德,王少依,寿建峰,陈子炓,秦玉娟,唐光明.2005b.柴达木盆地西南区古近系及新近系砂岩储层.古地理学报,7(4):519-528
杨占龙,彭立才,陈启林,郭精义,黄云峰.2007.地震属性分析与岩性油气藏勘探.石油物探,46(2):131-136
尹成明,田丽艳,任收麦,马寅生.2011.东昆仑山北缘山前构造带的特征及其对油气成藏的意义.地质通报,30(8):1275-1282
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