不同组分气体充注对碳酸盐胶结物形成的影响及其地质意义:以莺歌海盆地XF13区块黄流组储层为例
|
摘要
综合应用电子显微镜、扫描电镜、阴极发光、X衍射、稳定同位素分析和流体包裹体分析测试等技术,通过半定量化研究深入探讨了莺歌海盆地XF13区块黄流组储层中富CO2和富烃类气两类气体充注对储层中碳酸盐胶结物形成的影响,结果表明:(1)靠近底辟的XF13A、XF13B井受到了晚期富CO2热流体充注影响,促进了溶蚀作用(次生孔隙比例为39.9%～58.4%),但由于处于幕式半开放的封闭成岩体系中,溶蚀过程中形成的大量Ca2+、Mg2+、Fe2+等离子没有及时排出,这些离子重新化合沉淀形成大量晚期碳酸盐胶结物,使得碳酸盐胶结物体积分数(4.5%～13.5%)和类型增多,进而破坏孔隙喉道,形成中孔低渗储层;(2)远离底辟的XF13E、XF13F等井黄流组储层主要是早期烃类气充注,溶蚀作用较弱(次生孔隙比例为7.2%～27.7%)且处于开放的酸性热液体系中,造成碳酸盐胶结物体积分数(1.0%～6.0%)和类型相对较少,形成中孔中渗储层。
This paper studies the effects of CO2-rich and hydrocarbon-rich gas charging on the formation of carbonate cement from Huangliu Formation,XF13 block in Yinggehai Basin on the basis of synthetic analysis,including optical microscopy,scanning electron microscopy,cathode luminescence,X-ray diffraction,stable isotope analyses,and fluid inclusion determination.Results show that:(1) The late-stage chargingof CO2-rich thermal fluid occurred in the XF13 Aand XF13Bwells close to the diapir zone,and this region experienced strong dissolution(the secondary porosity contributes 39.9%-58.4%for the total plane porosity).Because the diagenetic system was relatively close with episodic semi-open system,massive ions,such as Ca2+,Mg2+,and Fe2+generated by dissolution are largely preserved in the system.These ions are combined to form various high-content carbonate cements(4.5%-13.5%)which filled the pore throats and reduced the permeability.Consequently middle porosity-low permeability reservoir was formed.(2)The XF13 Eand XF13Fwells far from the diapir zone were mainly charged by the early-stage hydrocarbon-rich fluid.This region experienced weak dissolution(the secondary porosity contributes 7.2%-27.7%for the total plane porosity).At the same time,the diagenetic system is relatively open with acid hydrothermal system,forming only some types of low-content carbonate cements(1.0%-6.0%).As a result,middle porosity-middle permeability reservoir was formed.
This paper studies the effects of CO2-rich and hydrocarbon-rich gas charging on the formation of carbonate cement from Huangliu Formation,XF13 block in Yinggehai Basin on the basis of synthetic analysis,including optical microscopy,scanning electron microscopy,cathode luminescence,X-ray diffraction,stable isotope analyses,and fluid inclusion determination.Results show that:(1) The late-stage chargingof CO2-rich thermal fluid occurred in the XF13 Aand XF13Bwells close to the diapir zone,and this region experienced strong dissolution(the secondary porosity contributes 39.9%-58.4%for the total plane porosity).Because the diagenetic system was relatively close with episodic semi-open system,massive ions,such as Ca2+,Mg2+,and Fe2+generated by dissolution are largely preserved in the system.These ions are combined to form various high-content carbonate cements(4.5%-13.5%)which filled the pore throats and reduced the permeability.Consequently middle porosity-low permeability reservoir was formed.(2)The XF13 Eand XF13Fwells far from the diapir zone were mainly charged by the early-stage hydrocarbon-rich fluid.This region experienced weak dissolution(the secondary porosity contributes 7.2%-27.7%for the total plane porosity).At the same time,the diagenetic system is relatively open with acid hydrothermal system,forming only some types of low-content carbonate cements(1.0%-6.0%).As a result,middle porosity-middle permeability reservoir was formed.
引文
[1]王可勇,李剑锋,万多,等.长岭凹陷深层天然气藏中CO2及CH4充注次序的流体包裹体证据[J].岩石学报,2015,31(4):1101-1107.
[2] Worden R H.Dawsonite cement in the Triassic Lam Formation,Shabwa Basin,Yemen:A natural analogue for a potential mineral product of subsurface CO2storage for greenhouse gas reduction[J].Marine and Petroleum,2006,23(1):61-77.
[3] Liu L H,Yuko S,Greg B.CO2injection to granite and sandstone in experimental rock/hot water systems[J].Energy Conversion and Management,2003,44(9):1399-1410.
[4] Emberley S,Hutcheon I,Shevalier M,et al.Geochemical monitoring of fluid-rock interaction and CO2storage at the Weyburn CO2-injection enhanced oil recovery site,Saskatchewan,Canada[J].Energy,2004,29(9):1393-1401.
[5] Baran P,Zarbska K,Nodzeński A.Energy aspects of CO2sorption in the context of sequestration in coal deposits[J].Journal of Earth Science,2014,25(4):719-726.
[6] Hawkins P J.Relationship between diagenesis,porosity reduction,and oil emplacement in Late Carboniferous sandstone reservoirs,Bothamsall Oilfield,E Midlands[J].Journal of the Geological Society,1978,135(1):7-24.
[7] Midtbo R E A,Rykkje J M,Ramm M.Deep burial diagenesis and reservoir quality along the eastern flank of the Viking Graben:Evidence for illitization and quartz cementation after hydrocarbon emplacement[J].Clay Minerals,2000,35(1):227-237.
[8]谢玉洪,张迎朝,李绪深,等.莺歌海盆地高温超压气藏控藏要素与成藏模式[J].石油学报,2012,33(4):601-609.
[9]段威,陈金定,罗程飞,等.莺歌海盆地东方区块地层超压对成岩作用的影响[J].石油学报,2013,34(6):1049-1059.
[10]Lavenu A P C,Lamarche J,Gallois A,et al.Tectonic versus diagenetic origin of fractures in a naturally fractured carbonate reservoir analog(Nerthe anticline,southeastern France)[J].AAPG Bulletin,2013,97(12):2207-2232.
[11]Jansa L F,Urrea V H N.Geology and diagenetic history of overpressured sandstone reservoirs,venture gas field,offshore Nova Scotia,Canada[J].AAPG Bulletin,1990,74(10):1640-1658.
[12]段威.莺歌海盆地东方区块异常高压条件下油气成藏模式与主控因素[D].武汉:中国地质大学(武汉),2015.
[13]Huang Y T,Yao G Q,Zhou F D,et al.Impact factors on reservoir quality of clastic Huangliu Formation in overpressure diapir zone,Yinggehai Basin,China[J].Journal of Petroleum Science and Engineering,2017,154(6):322-336.
[14]郇金来,漆智,杨朝强,等.莺歌海盆地东方区黄流组一段储层成岩作用机理及孔隙演化[J].地质科技情报2016,35(1):87-93.
[15]Fu M Y,Song R C,Xie Y H,et al.Diagenesis and reservoir quality of overpressured deep-water sandstone following inorganic carbon dioxide accumulation:Upper Miocene Huangliu Formation,Yinggehai Basin,South China Sea[J].Marine and Petroleum Geology,2016,77(11):954-972.
[16]吴红烛,黄志龙,裴建翔,等.莺歌海盆地底辟带DF区天然气地球化学特征差异及其成因[J].石油实验地质,2015,37(2):211-219.
[17]闫志为,刘辉利,张志平.温度及CO2对方解石、白云石溶解度影响特征分析[J].中国岩溶,2009,28(1):7-10.
[18]Jeans C V.Clay diagenesis,overpressure and reservoir quality:An introduction[J].Clay Minerals,1994,29(4):415-424.
[19]Ajdukiewicz J M,Larese R E.How clay grain coats inhibit quartz cement and preserve porosity in deeply buried sandstones:Observations and experiments[J].AAPG Bulletin,2012,96(11):2091-2119.
[20]Keith L M,Weber J N.Carbon and oxygen isotopic composition of selected limestones and fossils[J].Geochimica et Cosmochimica Acta,1964,28(10/11):1787-1816.
[21]代金友,张一伟,熊琦华,等.成岩作用对储集层物性贡献比率研究[J].石油勘探与开发2003,30(4):54-71.
[22]Sneider R M.Reservoir description for exploration and development:What is needed and When?[J].AAPG Bulletin,1987,72(12):1522-1523.
[23]Giles M R,Boer R B.Origin and significance of redistributional secondary porosity[J].Marine and Petroleum Geology,1990,7(4):378-397.
[24]Jiang T,Xie X N,Chen H,et al.Geochemistry of pore water and associated diagenetic reactions in the diapiric area of Yinggehai Basin,Northwestern South China Sea[J].Journal of Earth Science,2015,26(3):306-316.
[25]王翠丽,周文,谢玉洪,等.莺歌海盆地泥底辟带高温热事件与储层成岩作用[J].地质科技情报2015,34(4):35-42.
[2] Worden R H.Dawsonite cement in the Triassic Lam Formation,Shabwa Basin,Yemen:A natural analogue for a potential mineral product of subsurface CO2storage for greenhouse gas reduction[J].Marine and Petroleum,2006,23(1):61-77.
[3] Liu L H,Yuko S,Greg B.CO2injection to granite and sandstone in experimental rock/hot water systems[J].Energy Conversion and Management,2003,44(9):1399-1410.
[4] Emberley S,Hutcheon I,Shevalier M,et al.Geochemical monitoring of fluid-rock interaction and CO2storage at the Weyburn CO2-injection enhanced oil recovery site,Saskatchewan,Canada[J].Energy,2004,29(9):1393-1401.
[5] Baran P,Zarbska K,Nodzeński A.Energy aspects of CO2sorption in the context of sequestration in coal deposits[J].Journal of Earth Science,2014,25(4):719-726.
[6] Hawkins P J.Relationship between diagenesis,porosity reduction,and oil emplacement in Late Carboniferous sandstone reservoirs,Bothamsall Oilfield,E Midlands[J].Journal of the Geological Society,1978,135(1):7-24.
[7] Midtbo R E A,Rykkje J M,Ramm M.Deep burial diagenesis and reservoir quality along the eastern flank of the Viking Graben:Evidence for illitization and quartz cementation after hydrocarbon emplacement[J].Clay Minerals,2000,35(1):227-237.
[8]谢玉洪,张迎朝,李绪深,等.莺歌海盆地高温超压气藏控藏要素与成藏模式[J].石油学报,2012,33(4):601-609.
[9]段威,陈金定,罗程飞,等.莺歌海盆地东方区块地层超压对成岩作用的影响[J].石油学报,2013,34(6):1049-1059.
[10]Lavenu A P C,Lamarche J,Gallois A,et al.Tectonic versus diagenetic origin of fractures in a naturally fractured carbonate reservoir analog(Nerthe anticline,southeastern France)[J].AAPG Bulletin,2013,97(12):2207-2232.
[11]Jansa L F,Urrea V H N.Geology and diagenetic history of overpressured sandstone reservoirs,venture gas field,offshore Nova Scotia,Canada[J].AAPG Bulletin,1990,74(10):1640-1658.
[12]段威.莺歌海盆地东方区块异常高压条件下油气成藏模式与主控因素[D].武汉:中国地质大学(武汉),2015.
[13]Huang Y T,Yao G Q,Zhou F D,et al.Impact factors on reservoir quality of clastic Huangliu Formation in overpressure diapir zone,Yinggehai Basin,China[J].Journal of Petroleum Science and Engineering,2017,154(6):322-336.
[14]郇金来,漆智,杨朝强,等.莺歌海盆地东方区黄流组一段储层成岩作用机理及孔隙演化[J].地质科技情报2016,35(1):87-93.
[15]Fu M Y,Song R C,Xie Y H,et al.Diagenesis and reservoir quality of overpressured deep-water sandstone following inorganic carbon dioxide accumulation:Upper Miocene Huangliu Formation,Yinggehai Basin,South China Sea[J].Marine and Petroleum Geology,2016,77(11):954-972.
[16]吴红烛,黄志龙,裴建翔,等.莺歌海盆地底辟带DF区天然气地球化学特征差异及其成因[J].石油实验地质,2015,37(2):211-219.
[17]闫志为,刘辉利,张志平.温度及CO2对方解石、白云石溶解度影响特征分析[J].中国岩溶,2009,28(1):7-10.
[18]Jeans C V.Clay diagenesis,overpressure and reservoir quality:An introduction[J].Clay Minerals,1994,29(4):415-424.
[19]Ajdukiewicz J M,Larese R E.How clay grain coats inhibit quartz cement and preserve porosity in deeply buried sandstones:Observations and experiments[J].AAPG Bulletin,2012,96(11):2091-2119.
[20]Keith L M,Weber J N.Carbon and oxygen isotopic composition of selected limestones and fossils[J].Geochimica et Cosmochimica Acta,1964,28(10/11):1787-1816.
[21]代金友,张一伟,熊琦华,等.成岩作用对储集层物性贡献比率研究[J].石油勘探与开发2003,30(4):54-71.
[22]Sneider R M.Reservoir description for exploration and development:What is needed and When?[J].AAPG Bulletin,1987,72(12):1522-1523.
[23]Giles M R,Boer R B.Origin and significance of redistributional secondary porosity[J].Marine and Petroleum Geology,1990,7(4):378-397.
[24]Jiang T,Xie X N,Chen H,et al.Geochemistry of pore water and associated diagenetic reactions in the diapiric area of Yinggehai Basin,Northwestern South China Sea[J].Journal of Earth Science,2015,26(3):306-316.
[25]王翠丽,周文,谢玉洪,等.莺歌海盆地泥底辟带高温热事件与储层成岩作用[J].地质科技情报2015,34(4):35-42.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |