Accumulation condition and exploration potential for Wufeng-Longmaxi shale gas in Wuxi area,northeastern Sichuan Basin
Received date: 2016-10-13
Revised date: 2017-03-10
Online published: 2017-05-10
Wufeng-Longmaxi shale gas is a new exploration field in Wuxi area,Sichuan Basin.Some shale gas evaluation-associated geological parameters of the new exploration wells in Wuxi area were studied,including shale reservoir,gas bearing,geochemical and paleontological characteristics.The study suggests that the original shale gas generation condition is excellent,but later this area went through serious and multi-phase tectonic damage.The major evidence presents as:the δ13C2 value of shale gas is obviously higher than others in areas with the same maturity ,indicating the shale gas is mainly late kerogen cracked gas,which is due to a high hydrocarbon expulsion efficiency;the porosity of shale is very low in Wuxi area because of strong tectonic movements and lack of residual oil in shale;some shale core near faults even show a very low metamorphic characteristics with intense cleavage,and the epidermis of graptolite fossils was pyrolyzed.The comprehensive study shows there are prospective resources in Wuxi area,but the possibility to get scaled commercial production in recent time is very low.
Wu Wei,Xie Jun,Shi Xue-wen,Zhao Sheng-xian,Ji Chun-hai,Hu Ying,Guo Yan-bo . Accumulation condition and exploration potential for Wufeng-Longmaxi shale gas in Wuxi area,northeastern Sichuan Basin[J]. Natural Gas Geoscience, 2017 , 28(5) : 734 -743 . DOI: 10.11764/j.issn.1672-1926.2017.04.009
[1]Dong Dazhong,Zou Caineng,Dai Jinxing,et al.Suggestions on the development strategy of shale gas in China[J].Natural Gas Geoscience,2016,27(3):397-406.[董大忠,邹才能,戴金星,等.中国页岩气发展战略对策建议[J].天然气地球科学,2016,27(3):397-406.]
[2]Zou Caineng,Dong Dazhong,Wang Yuman,et al.Shale gas in China:Characteristics,challenges and prospects (I)[J].Petroleum Exploration & Development,2015,42(6):753-767.[邹才能,董大忠,王玉满,等.中国页岩气特征、挑战及前景(一)[J].石油勘探与开发,2015,42(6):689-701.]
[3]Zou Caineng,Dong Dazhong,Wang Yuman,et al.Shale gas in China:Characteristics,challenges and prospects (II)[J].Petroleum Exploration & Development,2016,43(2):166-178.[邹才能,董大忠,王玉满,等.中国页岩气特征、挑战及前景(二)[J].石油勘探与开发,2016,43(2):166-178.]
[4]Liang Feng,Bai Wenhua,Zou Caineng,et al.Shale gas enrichment pattern and exploration significance of Well WuXi-2 in northeast Chongqing,NE Sichuan Basin[J].Petroleum Exploration & Development,2016,43(3):386-394.[梁峰,拜文华,邹才能,等.渝东北地区巫溪2井页岩气富集模式及勘探意义[J].石油勘探与开发,2016,43(3):350-358.]
[5][KG*5/6]Pu Boling,Jiang Youlu,Wang Yi,et al.Reservoir-forming conditions and favorable exploration zones of shale gas in Lower Silurian Longmaxi Formation of Sichuan Basin[J].Acta Petrolei Sinica,2010,31(2):225-230.[蒲泊伶,蒋有录,王毅,等.四川盆地下志留统龙马溪组页岩气成藏条件及有利地区分析[J].石油学报,2010,31(2):225-230.]
[6]Zhang Jian,Wang Lansheng,Yang Yueming,et al.The development and application of the evaluatuion method of marine shale gas in Sichuan Basin[J].Natural Gas Geoscience,2016,27(3):433-441.[张鉴,王兰生,杨跃明,等.四川盆地海相页岩气选区评价方法建立及应用[J].天然气地球科学,2016,27(3):433-441.]
[7]Zhao Shengxian,YangYueming,Zhang Jian,et al.Micro-layers division and fine reservoirs contrast of Lower Silurian Longmaxi Formation shale,Sichuan Basin,SW China[J].Natural Gas Geoscience,2016,27(3):470-487.[赵圣贤,杨跃明,张鉴,等.四川盆地下志留统龙马溪组页岩小层划分与储层精细对比[J].天然气地球科学,2016,27(3):470-487.]
[8]Chen Xu,Xu Juntao.On the Hannan old land and Dabashan Uplift[J].Journal of Stratigraphy,1990,14(2):81-116.[陈旭,徐均涛.论汉南古陆及大巴山隆起[J].地层学杂志,1990,14(2):81-116.]
[9]Xiao Xianming,Wang Maolin,Wei Qiang,et al.Evaluation of Lower Paleozoic shale with shale gas prospect in south China[J].Natural Gas Geoscience,2015,26(8):1433-1445.[肖贤明,王茂林,魏强,等.中国南方下古生界页岩气远景区评价[J].天然气地球科学,2015,26(8):1433-1445.]
[10]National Energy Administration of the Peoples Republic of China.SY/T 6940-2013 Measurement Method of Shale Gas Content[S].Beijing:Standards Press of China,2013.[中华人民共和国国家能源局.SY/T 6940-2013页岩气含气量测定方法[S].北京:中国标准出版社,2013.]
[11]Wu Wei,Huang Shipeng,Hu Guoyi,et al.A comparison between shale gas and conventional gas on geochemical characteristics in Weiyuan area[J].Natural Gas Geoscience,2014,25(12):1994-2002.[吴伟,黄士鹏,胡国艺,等.威远地区页岩气与常规天然气地球化学特征对比[J].天然气地球科学,2014,25(12):1994-2002.]
[12]Wu Wei,Fang Chenchen,Dong Dazhong,et al.Shale gas geochemical anomalies and gas sourceidentification[J].Acta Peitrolei Sinica,2015,36(11):1332-1366.[吴伟,房忱琛,董大忠,等.页岩气地球化学异常与气源识别[J].石油学报,2015,36(11):1332-1366.]
[13][KG*5/6]Wu Wei.The Geochemical Characteristics and Its Origin of Silurian Longmaxi Shale Gas in Sichuan Basin[D].Beijing:Institute of Petroleum Exploration and Development,2015:41-63.[吴伟.四川盆地志留系龙马溪组页岩气地球化学特征与成因[D].北京:中国石油勘探开发研究院,2015:41-63.]
[14]Liu Y,Zhang J,Ren J,et al.Stable isotope geochemistry of the nitrogen-rich gas from Lower Cambrian shale in the Yangtze Gorges area,south China[J].Marine & Petroleum Geology,2016,77:693-702.
[15]Zumberge J,Ferworn K J,Brown S.Isotopic reversal (‘rollover’) in shale gases produced from the Mississippian Barnett and Fayetteville Formations[J].Marine and Petroleum Geology,2012,31:43-52.
[16]Lorant F,Prinzhofer A,Behar F,et al.Carbon isotopic and molecular constraints on the formation and the expulsion of thermogenic hydrocarbon gases[J].Chemical Geology,1998,147:249-264.
[17]Xia X Y,Chen J,Braun R,et al.Isotopic reversals with respect to maturity trends due to mixing of primary and secondary products in source rocks[J].Chemical Geology,2013,339:205-212.
[18]Jenden P D,Draza D J,Kaplan I R.Mixing of thermogenic natural gas in north Appalachian basin[J].AAPG Bulletin,1993,77(6):980-998.
[19]James A.Correlation of natural gas by use of carbon isotopic distribution between hydrocarbon components[J].AAPG Bulletin,1983,67(7):1176-1191.
[20]Burruss R C,Laughrey C D.Carbon and hydrogen isotopic reversals in deep basin gas:Evidence for limits to the stability of hydrocarbons[J].Organic Geochemistry,2010,42:1285-1296.
[21]Osborn S G,McIntosh J C.Chemical and isotopic tracers of the contribution of microbial gas in Devonian organic-rich shales and reservoir sandstones,northern Appalachian Basin[J].Applied Geochemistry,2010,25(3):456-471.
[22]Rodriguez N D,Philp R P.Geochemical characterization of gases from the Mississippian Barnett shale,Fort Worth Basin,Texas[J].AAPG Bulletin,2010,94(11):1641-1656.
[23]Martini A M,Walter L M,McIntosh J C.Identification of microbial and thermogenic gas components from Upper Devonian black shale cores,Illinois and Michigan Basins[J].AAPG Bulletin,2008,92(3):327-339.
[24]StrpocD,Mastalerz M,Schimmelmann A,et al.Geochemical constraints on the origin and volume of gas in the New Albany Shale (Devonian-Mississippian),eastern Illinois Basin[J].AAPG Bulletin,2010,94(11):1713-1740.
[25]Pashin J C,Kopaska D.C,Arnold A C,et al.Gigantic,gaseous mushwads in Cambrian shale:Conasauga Formation,southern Appalachians,USA[J].International Journal of Coal Geology,2012,103:70-91.
[26]Hill R J,Jarvie D M,Zumberge J,et al.Oil and gas geochemistry and petroleum systems of the Fort Worth Basin[J].AAPG Bulletin,2007,91(4):445-473.
[27]Wu W,Dong D Z,Yu C,et al.Geochemical characteristics of shale gas in Xiasiwan area,Ordos Basin[J].Energy Exploration & Exploitation,2015,33(1):25-42.
[28]Prinzhofer A,Huc A Y.Genetic and post-genetic molecular and isotopic fractionations in natural gases[J].Chemical Geology,1995,126:281-290.
[29]Wu Wei,Luo Bing,Luo Wenjun,et al.Further discussion about the origin of natural gas in the Sinian of central Sichuan paleo-uplift,Sichuan Basin,China[J].Natural Gas Geoscience,2016,27(8):1447-1453.[吴伟,罗冰,罗文军,等.再论四川盆地川中古隆起震旦系天然气成因[J].天然气地球科学,2016,27(8):1447-1453.]
[30]Liu Shugen,Deng Bing,Zhong Yong,et al.Unique geological features of burial and superimposition of the Lower Paleozoic shale gas across the Sichuan Basin and its periphery[J].Earth Science Frontiers,2016,23(1):11-28.[刘树根,邓宾,钟勇,等.四川盆地及周缘下古生界页岩气深埋藏-强改造独特地质作用[J].地学前缘,2016,23(1):11-28.]
[31]Qin Bo,Fan Xiaojun,Liu Ming,et al.Geochemical characteristics and geological significance of desorbed shale gas in Longmaxi Formation,Jiaoshiba area[J].Acta Petrolei Sinica,2016,37(7):846-854.[秦华,范小军,刘明,等.焦石坝地区龙马溪组页岩解吸气地球化学特征及地质意义[J].石油学报,2016,37(7):846-854.]
[32]Xiong Y Q,Zhang L,Chen Y,et al.The origin and evolution of thermogenic gases in organic-rich marine shales[J].Journal of Petroleum Science and Engineering,2016,143:8-13.
[33]Li Y,He D,Chen L,et al.Cretaceous sedimentary basins in Sichuan,SW China:Restoration of tectonic and depositional environments[J].Cretaceous Research,2016,57:50-65.
[34]Wang Feiyu,Guan Jing,Feng Weiping,et al.Evolution of overmature marine shale porosity and implication to the free gas volume[J].Petroleum Exploration & Development,2013,40(6):819-824.[王飞宇,关晶,冯伟平,等.过成熟海相页岩孔隙度演化特征和游离气量[J].石油勘探与开发,2013,40(6):764-768.]
[35]Guo Tonglou,Liu Ruobing.Implications from marine shale gas exploration breakthrough in complicated structural area at high thermal stage:Taking Longmaxi Formation in Well JY1 as an example[J].Natural Gas Geoscience,2013,24(4):643-651.[郭彤楼,刘若冰.复杂构造区高演化程度海相页岩气勘探突破的启示——以四川盆地东部盆缘JY1井为例[J].天然气地球科学,2013,24(4):643-651.]
[36]Chen Zhipeng,Liang Xing,Zhang Jiehui,et al.Genesis analysis of shale reservoir over-pressure of Longmaxi Formation in Zhaotong Demonstration area,Dianqianbei Depression[J].Natural Gas Geoscience,2016,27(3):442-448.[陈志鹏,梁兴,张介辉,等.昭通国家级示范区龙马溪组页岩气储层超压成因浅析[J].天然气地球科学,2016,27(3):442-448.]
[37]Lu J,Larson T E,Smyth R C.Carbon isotope effects of methane transport through Anahuac Shale:A core gas study[J].Journal of Geochemical Exploration,2015,148:138-149.
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