川东北地区飞仙关组成岩晚期白云石溶解作用

doi:10.11743/ogg20120415

Abstract

Abstract:

Comprehensive analyses were performed on thin-section,carbon,oxygen and strontium isotopes and fluid inclusions of reservoirs in the Feixianguan Formation of northeastern Sichuan Basin.In the northeastern part of Kaijiang-Liangping shelf,intercrystalline pores resulting from dolomitization of calcite are absent in the high-quality reservoirs.In contrast,dolomite intergranular dissolution pores or intergranular enlarged dissolution pores are well developed in these reservoirs.Both two kinds of dissolution pores may coexist closely with calcites of light carbon isotope and occur in space between solid bitumen and dolomite crystals,thus they should have been produced by dolomite dissolution after solid bitumen precipitation.In the southern part of Kaijiang-Liangping shelf,dolostones are absent,thus pores of similar origin are also not developed.Under acidic conditions,dolomite may react with anhydrite or celestite,to produce MgSO₄ in the northeastern part of Kaijiang-Liangping shelf.As the MgSO₄ can be easily reduced by hydrocarbons to produce H₂S, further promoting the dissolution of dolomite,anhydrite and celestite,the precipitation of giant crystal/poikilitic calcite,and the enlarging of secondary pores in local areas.This genetic mechanism can clearly explain the differences of reservoir physical properties between the northeastern and northwestern areas.The MgSO₄ is likely to be the primary intermediate reactants of TSR.

Key words: dolomite dissolution, porosity evolution, diagenesis, TSR, Feixianguan Formation, northeastern Sichuan Basin

CLC Number:

TE121.1

Zhang Jun, Cai Liulu, Xiang Lei, Cai Chunfang. Late diagenetic dissolution of dolomites in the Feixianguan Formation, northeastern Sichuan Basin[J]. Oil & Gas Geology, 2012, 33(4): 599-606.

References

[1] 王强,徐立恒,陈践发.川东北地区大中型气藏天然气特征及气源[J].石油与天然气地质,2011,32(6):867-872. Wang Qiang,Xu Liheng,Chen Jianfa.Characteristics,origin of natural gas in large-and medium-sized gas reservoirs in northeast Sichuan Basin[J].Oil & Gas Geology,2011,32(5):867-872.
[2] 朱光有,张水昌,梁英波,等.TSR对深部碳酸盐岩储层的溶蚀改造——四川盆地深部碳酸盐岩优质储层形成的重要方式[J].岩石学报,2006,22(8):2182-2194. Zhu Guangyou,Zhang Shuichang,Liang Yingbo,et al.Dissolution and alteration of the deep carbonate reservoirs by TSR: an important type of deep-buried high-quality carbonate reservoirs in Sichuan basin[J].Acta Petrologica Sinica,2006,22(8):2182-2194.
[3] 郭彤楼.川东北地区飞仙关组鲕滩储层成岩作用——以宣汉-达县及元坝区块为例[J].石油与天然气地质,2010,31(5):620-631. Guo Tonglou.Diagenesis of the Feixianguan oolitic shoal reservoirs in the northeastern Sichuan Basin-examples from Xuanhan-Daxian and Yuanba areas[J].Oil & Gas Geology,2010,31(5):620-631.
[4] 王正和,郭彤楼,谭钦银,等.四川盆地东北部长兴组-飞仙关组各沉积相带储层特征[J].石油与天然气地质,2011,32(1):56-63. Wang Zhenghe,Guo Tonglou,Tan Qinyin,et al.Reservoir characteristics of different sedimentary facies in the Changxing and Feixianguan Formations,northeast of the Sichuan Basin[J].Oil & Gas Geology,2011,32(1):47-55.
[5] 王一刚,窦立荣,文应初成,等.四川盆地东北部三叠系飞仙关组高含硫气藏H₂S成因研究[J].地球化学,2002,31(6):517-524. Wang Yigang,Dou Lirong,Wen Yingchu,et al.Origin of H₂S in Triassic Feixianguan Formation gas pools,Northeastern Sichuan Basin,China[J].Geochimica,2002,31(6):517-524.
[6] Cai Chunfang,Xie Zengye,Worden R H,et a1.Methane-dominated thermochemical sulphate reduction in the Triassic Feixianguan Formation East Sichuan Basin,China:Towards prediction of fatal H₂S concentrations[J].Marine and Petroleum Geology,2004,21(10):1265-1279.
[7] Cai Chunfang,Li Kaikai,Zhu Yangming,et a1.TSR origin of sulfur in the Permian and Triassic reservoir bitumen in East Sichuan Basin,China[J].Organic Geochemistry,2010,41:871-878.
[8] 朱光有,张水昌,梁英波,等.川东北地区飞仙关组高含H₂S天然气TSR成因的同位素证据[J].中国科学(D辑),2005,35(11):1037-1046. Zhu Guangyou,Zhang Shuichang,Liang Yinbo,et al.Evidence from isotopic on origin of TSR in Feixianguan Formation gas pools in East Sichuan Basin[J].Science in China Series D,2005,35(11):1037-1046.
[9] 马永生,郭彤楼,赵雪凤,等.普光气田深部优质白云岩储层形成机制[J].中国科学(D辑):地球科学,2007,37(增刊):43-52. Ma Yongsheng,Guo Tonglou,Zhao Xuefeng,et al.The formation mechanism of high-quality dolomite reservoir in the deep of Puguang Gas Field[J].Science in China Series D,2007,37(S0):43-52.
[10] Machel H G.Bacterial and thermochemical sulfate reduction in diagenetic settings old and new insights[J].Sedimentary Geology,2001,140:143-175.
[11] Cai Chunfang,Li Kaikai,Li Hongtao,et al.Evidence for cross for mational hotbrine flow from integrated ⁸⁷Sr/⁸⁶Sr,REE and fluid inclusions of the Ordovician veins in Central Tarim [J].Applied Geochemistry,2008,23:2226-2235.
[12] Cai Chunfang,Zhang Chunming,Cai Liulu,et al.Origins of Palaeozoic oils in the Tarim Basin:evidence from sulfur isotopes and biomarkers [J].Chemical Geology,2009,268:197-210.
[13] 王思仪.川东地区下三叠统飞仙关组成岩作用及对储层的影响.南充:西南石油大学,2006. Wang Siyi.Diagenesis and its influence to the reservoir of Feixianguan Formation in Lower Triassic,East Sichuan.Southwest Petroleum University,2006.
[14] Moore C H,Druckman Y.Burial diagenesis and porosity evolution,Upper Jurassic Smackover,Arkansas and Louisiana [J].AAPG Bulletin,1981,65:597-628.
[15] Hill C A.H₂S related porosity and sulfuric acid oil-field karst[J].AAPG Memoir,1995,63:301-305.
[16] Zhang Tongwei,Amrani A,Ellis G S,et al.Experimental investigation on thermochemical sulfate reduction by H₂S initiation [J].Geochimicaet Cosmochimica Acta,2008,72:3518-3530.
[17] Ma Qisheng,Ellis G S.,Amrani A,et al.Theoretical study on the reactivity of sulfate species with hydrocarbons[J].Geochimica et Cosmochimica Acta,2008,72:4565-4576.
[18] 王一刚,文应初,洪海涛,等.四川盆地三叠系飞仙关组气藏储层成岩作用研究拾零[J].沉积学报,2007,25(6):831-839. Wang Yigang,Wen Yingchu,Hong Haitao,et al.Diagenesis of Triassic Feixianguan Formation in Sichuan Basin,Southwest China[J].Acta Sedimentologica Sinic,2007,25(6):831-839.
[19] 刘全有,金之钧,高波,等.川东北地区酸性气体中CO₂成因与TSR作用的影响[J].地质学报,2009,83(8):1195-1202. Liu Quanyou,Jin Zhijun,Gao Bo,et al.CO₂ origin in sour gas in Northeast Sichuan basin and fate action of thermochemical sulfate reduction (TSR ) to natural gas[J].Acta Geologica Sinica,2009,83(8):1195-1202.
[20] 陈琪,胡文瑄,李庆,等.川东北盘龙洞长兴组-飞仙关组白云岩化特征及成因[J].石油与天然气地质,2012,33(1):84-93. Chen Qi,Hu Wenxuan,Li Qing,et al.Characteristics and genesis of dolomitization in Changxing and Feixianguan Formations in Panlongdong,northeastern Sichuan Basin[J].Oil & Gas Geology,2012,33(1):84-93.
[21] 黄思静,胡作维,邹明亮,等.四川盆地东北部三叠系飞仙关组硫酸盐还原作用对碳酸盐成岩作用的影响[J].沉积学报,2007,25(6):815-824. Huang Sijing,Hu Zuowei,Zhou Mingliang,et al.Action of thermochemical sulfate reduction (TSR ) to the digenesis of carbonate in the Feixianguan of Triassic,NE Sichuan Basin of China[J].Acta Sedimentologica Sinica,2007,25(6):815-824.
[22] 黄思静,Hairuo Qing,裴昌蓉,等.川东三叠系飞仙关组白云岩锶含量、锶同位素组成与白云石化流体[J].岩石学报,2006,20(8):2123-2132. Huang Sijing,Qing Hairuo,Pei Changrong,et a1.Strontium concentration,isotope composition and dolomitization fluids in the Feixianguan Formation of Triassic,Eastern Sichuan of China[J].Acta Petrologica Sinica,2006,20(8):2123-2132.
[23] Machel H G.Concepts and models of dolomitization:a critical reappraisal.//CJR Braithwaite,RizziG,DarkeG,eds.The Geometry and Petrogenesis of Dolomite Hydrocarbon Reservoirs.Geological Society (London) Special Publication,2004,235:7-63.
[24] 马永生,郭彤楼,朱光有,等.硫化氢对碳酸盐储层溶蚀改造作用的模拟实验证据——以川东飞仙关组为例[J].科学通报,2007,52(增刊):136-141. Ma Yongsheng,Guo Tonglou,Zhu Guangyou,et al.Simulated experiment evidencesof the corrosion and reform actions of H₂S to carbonate reservoirs:an example of Feixianguan Formation,East Sichuan[J].Chinese Science Bulletin,2007,52(S1):136-141.
[25] Cai Chunfang,Warden R H,Bottrell S H,et a1.Thermochemical sulfate reduction and the generation of hydrogen sulphide and thiols(meroaptans)in Triassic carbonate reservoirs from the Sichuan Basin,China[J].Chemical Geology,2003,202:39-57.
[26] 张水昌,朱光有,梁英波.四川盆地普光大型气田H₂S及优质储层形成机理探讨——读马永生教授的"四川盆地普光大型气田的发现与勘探启示"有感[J].地质论评,2006,52(2):230-235. Zhang Shuichang,Zhu Guangyou,Liang Yingbo.Probe into formation mechanism of H₂S and high-quality reservoirs of Puguang large gas field in Sichuan Basin-the new congnition after reading professor Ma’s paper"Discovery of the large-scale gas field in the Sichuan Basin and its enlightenment for hydrocarbon prospecting"[J].Geological Review,2006,52(2):230-235.
[27] 朱光有,张水昌,梁英波,等.四川盆地深部海相优质储集层的形成机理及其分布预测[J].石油勘探与开发,2006,33(2):161-166. Zhu Guangyou,Zhang Shuichang,Liang Yingbo,et al.Formation mechanism and distribution prediction of high-quality marine reservoir in deeper Sichuan Basin[J].Pereoeum Exploration And Development,2006,33(2):161-166.
[28] 郑冰,腾格尔,张建勇,等.川东北地区飞仙关组油气藏H₂S由TSR和TDR两种方式形成[J].石油与天然气地质,2010,31(6):847-856. Zheng Bin,Teng Ge’er,Zhang Jianyong,et al.Origin of H₂S from TSR and TDR reactions in oil/gas reservoirs in the Feixianguan Form ation,the northeastern Sichuan Basin[J].Oil & Gas Geology,2010,31(6):847-856.
[29] 彭才,张延充,梅燕,等.川中地区飞仙关组高能鲕滩储层地震预测[J].石油物探,2010,49(5):504-508. Peng Cai,Zhang Yanchong, Mei Yan,et al.Seismic prediction on high-energy oolitic-beach reservoir of Feixianguan Formation in central Sichuan Basin[J].Geophysical Prospecting for Petroleum, 2011,(1):504-508.
[30] 赵雪凤,朱光有,张水昌,等.川东北普光地区与塔中地区深部礁滩体优质储层的对比研究[J].沉积学报,2009,27(3):390-402. Zhao Xuefeng,Zhu Guangyou,Zhang Shuichang,et al.Comparison of deeply buriedand High-quality reef-bank facies reservoirs of Puguang gas field in the Northeast of Sichuan Basin with Tazhong gas field of Tarim Basin[J].Acta Sedmentologica Sinica,27(3):390-402.

Late diagenetic dissolution of dolomites in the Feixianguan Formation, northeastern Sichuan Basin

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	Guanghui YUAN, Guangrong PENG, Lili ZHANG, Hui SUN, Shuhui CHEN, Hao LIU, Xiaoyang ZHAO. Diagenesis and low-permeability tightening mechanisms of the deep Paleogene reservoirs under high temperature and highly variable geothermal gradients in the Baiyun Sag， Pearl River Mouth Basin [J]. Oil & Gas Geology, 2024, 45(1): 44-64.
[2]	Zongquan HU, Ruyue WANG, Jing LU, Dongjun FENG, Yuejiao LIU, Baojian SHEN, Zhongbao LIU, Guanping WANG, Jianhua HE. Storage characteristic comparison of pores between lacustrine shales and their interbeds and differential evolutionary patterns [J]. Oil & Gas Geology, 2023, 44(6): 1393-1404.
[3]	Haizhou QU, Xinyu GUO, Wei XU, Wenhao LI, Song TANG, Yani DENG, Shipeng HE, Yunfeng ZHANG, Xingyu ZHANG. Classification and origin of micropores in carbonates and their effects on physical properties of rocks [J]. Oil & Gas Geology, 2023, 44(5): 1102-1117.
[4]	Jiageng LIU, Yanzhong WANG, Yingchang CAO, Shuping WANG, Xuezhe LI, Zhukun WANG. Factors controlling the development of deep and ultra-deep coarse-grained siliciclastic reservoirs with high quality in the steep slope zone of the Minfeng sub-sag， Dongying Sag， Bohai Bay Basin [J]. Oil & Gas Geology, 2023, 44(5): 1203-1217.
[5]	Xin WANG, Jianhui ZENG, Kunkun JIA, Weiqing WANG, Bo LI, Cong AN, Wen ZHAO. Evolutionary process of the wettability of low-permeability sandstone reservoirs under the control of diagenesis and its mechanism： A case study of the Dongying Sag， Bohai Bay Basin [J]. Oil & Gas Geology, 2023, 44(5): 1308-1320.
[6]	Hongbo WANG, Cunfei MA, Zheng CAO, Zhipeng LI, Changcheng HAN, Wenming JI, Yi YANG. Differential diagenesis and reservoir physical property responses of tight sandstone based on lithofacies： A case study on the Lower Jurassic Sangonghe Formation in Moxizhuang area， Junggar Basin [J]. Oil & Gas Geology, 2023, 44(4): 976-992.
[7]	Changgui XU, Chenglin GONG. Predictive stratigraphy： From sequence stratigraphy to source-to-sink system [J]. Oil & Gas Geology, 2023, 44(3): 521-538.
[8]	Ruyue WANG, Zongquan HU, Fuqiang LAI, Yuejiao LIU, Zhonghu WU, Jianhua HE, Guan’gui ZOU, Pengwei WANG, Zhihao LI. Brittleness features and controlling factors of continental shale from Da’anzhai Member of the Lower Jurassic Ziliujing Formation， northeastern Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(2): 366-378.
[9]	Fang Xiang, Qian Xiao, Xiantao Yu, Hengxu Huang, Xiang Zhu. Reservoir characteristics of the Upper Permian marine tuffaceous deposits in Yuanba area， Sichuan Basin [J]. Oil & Gas Geology, 2022, 43(4): 889-901.
[10]	Shifa Zhu, Ye Jia, Lichi Ma, Dian Cui, Anyu Jing, Huan Tong. Characteristics， quality-controlling factors and sweet spot model of the Mesozoic weathering crust reservoirs with complex lithologies in the Jiyang Depression， Bohai Bay Basin [J]. Oil & Gas Geology, 2022, 43(3): 514-527.
[11]	Qingmin Dong, Zhonggui Hu, Shiyue Chen, Shilin Li, Jialan Cai, Yixin Zhu, Yuying Zhang. Isotope geochemical responses and their geological significance of Changxing-Feixianguan Formation carbonates, northeastern Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(6): 1307-1320.
[12]	Yanqing Huang, Zhongqun Liu, Tian Lin, Kaihua Xiao, Ai Wang, Mingxi Xue, Zhizhou Huo. Lithofacies-based prediction of relatively high-quality reservoirs of the Xu 3 Member in Yuanba area, northeastern Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 863-872.
[13]	Guoqi Wei, Wei Yang, Mancang Liu, Saijun Wu, Wuling Mo, Hui Jin, Juehong Shen, Cuiguo Hao. Characteristics and distribution of platform-margin reef-shoal reservoirs in Changxing-Feixianguan Formations to the west of ocean trough, E'xi-Chengkou area [J]. Oil & Gas Geology, 2021, 42(3): 661-672, 764.
[14]	Cheng Shen, Lan Ren, Jinzhou Zhao, Mingpei Chen. Division of shale lithofacies associations and their impact on fracture network formation in the Silurian Longmaxi Formation, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(1): 98-106, 123.
[15]	Lixin Tian, Qingbin Wang, Xiaojian Liu, Yiwei Hao. Geological features and their participation in the formation of silicified clastic reservoirs in the Shahejie Formation of Laizhouwan Sag, Bohai Sea [J]. Oil & Gas Geology, 2020, 41(5): 1073-1082.