来凤咸丰区块LD2井五峰-龙马溪组页岩发育特征及含气性分析
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摘要
来凤咸丰区块位于湘鄂西褶冲带。页岩气参数井LD2井的钻探揭示了来凤咸丰区块两河口向斜翼部五峰-龙马溪组页岩发育特征和含气性特点,通过有机地球化学、X衍射全岩矿物、扫描电镜以及现场解析等实验方法手段,明确了LD2井五峰-龙马溪组页岩有机碳含量较高(TOC:0.42%~3.20%)、热演化程度适中(Ro:1.47%~2.63%)、矿物成分以碎屑岩脆性矿物为主(石英+长石:37.4%~65.3%)、特低孔特低渗的特征。通过与位于两河口向斜轴部的LD1井对比研究,认为两口井页岩品质大致相当,但LD2井含气量明显偏低,最大含气量仅0.72m~3/t,分析认为LD2井在新滩组钻遇断层,且龙马溪组顶界距离断层的横向距离不足20m,保存条件被破坏是导致LD2井五峰-龙马溪组页岩含气量偏低的主要原因。
The Laifeng-Xianfeng block is one of the 20 areas with shale gas exploration right in the second round of bidding invitation by the Ministry of Land and Resources,which is located in the fold thrust belt of western Hunan and Hubei Provinces. The survey well LD2 reveals the characteristics of Wufeng-Longmaxi Formation shale and its gas-bearing property in Lianghekou syncline's wings. Analysis of organic geochemistry,X-ray diffraction whole rock mineral,SEM and on-site experimental data permit to characterize the Wufeng-Longmaxi shale. It has higher organic carbon content( TOC:0. 42% ~ 3. 20%),moderate thermal evolution degree( R_o: 1. 47% ~ 2. 63%),the mineral composition dominated by clastic brittle mineral( quartz +feldspar: 37. 4% ~ 65. 3%),ultra low porosity and ultra low permeability. Comparing with the well LD1,which is located in Lianghekou syncline axis area,shows that the shale quality of the two wells are roughly the same,but the gas content of well LD2 is obviously low,and its maximum gas content is only 0. 72 m~3/t. The main reason is that a fault in Xintan Formation was encountered by LD2 well drilling,and the horizontal distance between this fault and the top of Longmaxi Formation in LD2 well is less than 20 m,leading to destruction of preservation conditions.
The Laifeng-Xianfeng block is one of the 20 areas with shale gas exploration right in the second round of bidding invitation by the Ministry of Land and Resources,which is located in the fold thrust belt of western Hunan and Hubei Provinces. The survey well LD2 reveals the characteristics of Wufeng-Longmaxi Formation shale and its gas-bearing property in Lianghekou syncline's wings. Analysis of organic geochemistry,X-ray diffraction whole rock mineral,SEM and on-site experimental data permit to characterize the Wufeng-Longmaxi shale. It has higher organic carbon content( TOC:0. 42% ~ 3. 20%),moderate thermal evolution degree( R_o: 1. 47% ~ 2. 63%),the mineral composition dominated by clastic brittle mineral( quartz +feldspar: 37. 4% ~ 65. 3%),ultra low porosity and ultra low permeability. Comparing with the well LD1,which is located in Lianghekou syncline axis area,shows that the shale quality of the two wells are roughly the same,but the gas content of well LD2 is obviously low,and its maximum gas content is only 0. 72 m~3/t. The main reason is that a fault in Xintan Formation was encountered by LD2 well drilling,and the horizontal distance between this fault and the top of Longmaxi Formation in LD2 well is less than 20 m,leading to destruction of preservation conditions.
引文
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Liu Zi-yi,Zhang Jin-chuan,Liu Yang,Yu Wen-wu,He Wei,Li Bowen.2016.The particle size characteristics of pyrite in Western Hunan and Hubei areas'Wufeng-Longmaxi formation shale[J].Science Technology and Engineering,16(26):34-41(in Chinese with English abstract)
Long Peng-yu,Zhang Jin-chuan,Li Yu-xi,Tang Xuan,Cheng Li-jun,Han Shuang-biao.2012.Reservoir-forming conditions and strategic select favorable area of shale gas in the Lower Paleozoic of Chongqing and its adjacent areas[J].Earth Science Frontiers,19(2):221-233(in Chinese with English abstract)
Nie Hai-kuan,Zhang Jin-chuan.2012.Shale gas accumulation conditions and gas content calculation:A case study Sichuan basin and its periphery in the lower Paleozoic[J].Acta Gelogica Sinica,86(2):349-360(in Chinese with English abstract)
Nie Hai-kuan,Zhang Jin-chuan,Bao Shu-jing,Song Xiao-jiao,Liu Jian-bin.2012.Shale gas accumulation conditions of the Upper Ordovician-Lower Silurian in Sichuan basin and its periphery[J].Oil&Gas Geology,33(3):335-345(in Chinese with English abstract)
Tang Ying,Zhang Jin-chuan,Liu Zhu-jiang,Li Le-zhong.2011.Use and improvement of the desorption method in shale gas content tests[J].Natural Gas Industry,31(10):108-112,128(in Chinese with English abstract)
Yang Fei,Ye Jian-zhong.2011.Structural characteristics and shale gas exploration potential in southeast Sichuan-western Hubei and Hunan areas[M].Wuhan:China University of Geosciences Press:1-124(in Chinese)
Yang Ping,Xie Yuan,Li Xu-bing,Bo Dao-yuan,Liu Zao-xue,Chen Hou-guo.2012.Hydrocarbon-generating potential of the source rocks of the Sinian Doushantuo Formation on the western side of the Xuefeng Mountain[J].Geology in China,39(5):1299-1309(in Chinese with English abstract)
Xie Long,Tao Gang,Liu He.2016.Geochemical characteristics of the Upper Triassic Tumengcla Formation source rocks in the Tumen area of the Qiangtang basin[J].Geology and Exploration,52(4):774-782(in Chinese with English abstract)
Zhang Jin-chuan,Jin Zhi-jun,Yuan Ming-sheng.2004.Reservoiring mechanism of shale gas and its distribution[J].Natural Gas Industry,24(7):5-18(in Chinese with English abstract)
陈康,张金川,唐玄,于京都,刘飏,杨超.2016.湘鄂西地区下志留统龙马溪组页岩吸附能力主控因素[J].石油与天然气地质,37(1):23-29
丁文龙,李超,李春燕,许长春,久凯,曾维特.2012.页岩裂缝发育主控因素及其对含气性影响[J].地学前缘,19(2):212-220
董大忠,王玉满,黄旭楠,张晨晨,管全中,黄金亮,王淑芳,李新景.2016.中国页岩气地质特征、资源评价方法及关键参数[J].天然气地球科学,27(9):1583-1601
范文斐,侯读杰,狄萌卿.2016.渝东南地区下古生界富有机质页岩有机岩石学特征[J].地质与勘探,52(2):346-356
李博,魏国庆,洪克岩,彭传圣,胡晓兰,朱亮亮.2016.中国南方盆外复杂构造区页岩气井评价与认识-以湖北来凤咸丰区块来页1井为例[J].天然气工业,36(8):29-35
李海,白云山,王保忠,张国涛.2014.湘鄂西地区下古生界页岩气保存条件[J].油气地质与采收率,21(6):22-26
梁狄刚,郭彤楼,陈建平,边立曾,赵喆.2008.中国南方海相生烃成藏研究的若干新进展(一):南方四套区域性海相烃源岩的分布[J].海相油气地质,13(2):1-16
刘洪林,王红岩.2013.中国南方海相页岩超低含水饱和度特征及超压核心区选择指标[J].天然气工业,33(7):140-144
刘子驿,张金川,刘飏,余文武,何葳,李波文.2016.湘鄂西地区五峰-龙马溪组泥页岩黄铁矿粒径特征[J].科学技术与工程,16(26):34-41
龙鹏宇,张金川,李玉喜,唐玄,程礼军,韩双彪.2012.重庆及其周缘地区下古生界页岩气成藏条件及有利区预测[J].地学前缘,19(2):221-233
聂海宽,张金川.2012.页岩气聚集条件及含气量计算-以四川盆地及周缘下古生界为例[J].地质学报,86(2):349-360
聂海宽,张金川,包书景,边瑞康,宋晓蛟,刘建斌.2012.四川盆地及其周缘上奥陶统-下志留统页岩气聚集条件[J].石油与天然气地质,33(3):335-345
唐颖,张金川,刘珠江,李乐忠.2011.解吸法测量页岩含气量及其方法的改进[J].天然气工业,31(10):108-112,128
谢龙,陶刚,刘和,李超.2016.羌塘盆地土门地区上三叠统土门格拉组烃源岩地球化学特征[J].地质与勘探,52(4):774-782
杨飞,叶建中.2011.川东南-湘鄂西地区构造特征与页岩气勘探潜力[M].武汉:中国地质大学出版社:1-124
杨平,谢渊,李旭兵,柏道远,刘早学,陈厚国.2012.雪峰山西侧震旦系陡山沱组烃源岩生烃潜力及油气地质意义[J].中国地质,39(5):1299-1309
张金川,金之钧,袁明生.2004.页岩气成藏机理和分布[J].天然气工业,24(7):5-18
Chen Ji,Xiao Xian-ming.2014.Evolution of nanoporosity in organicrich shales during thermal maturation[J].Fuel,129:173-181
Chen Kang,Zhang Jin-chuan,Tang Xuan,Yu Jing-dou,Liu Yang,Yang Chao.2016.Main controlling factors on shale adsorption capacity of the Lower Silurian Longmaxi Formation in western HunanHubei area[J].Oil&Gas Geology,37(1):23-29(in Chinese with English abstract)
Curtis J B.2002.Fractured shale-gas systems[J].AAPG Bulletin,86(11):1921-1938
Ding Wen-long,Li Chao,Li Chun-yan,Xu Chang-chun,Jiu Kai,Zeng Wei-te.2012.Dominant factor of fracture development in shale and its relationship to gas accumulation[J].Earth Science Frontiers,19(2):212-220(in Chinese with English abstract)
Dong Da-zhong,Wang Yu-man,Huang Xu-nan,Zhang Chen-chen,Guan Quan-zhong,Huang Jin-liang,Wang Shu-fang,Li Xin-jing.2016.Discussion about geological characteristics,resources evaluation methods and its key parameters of shale gas in China[J].Natural Gas Geoscience,27(9):1583-1601(in Chinese with English abstract)
Fan Wen-fei,Hou Du-jie,Di Meng-qing.2016.Organic petrology characteristics of organic-rich shale of Lower Palaeozoic in southeast Chongqing[J].Geology and Exploration,52(2):346-356(in Chinese with English abstract)
Li Bo,Wei Guo-qing,Hong Ke-yan,Peng Chuan-sheng,Hu Xiao-lan,Zhu Laing-liang.2016.Evaluation and understanding on the shale gas wells in complex tectonic provinces outside Sichuan basin,South China:A case study from Well Laiye 1 in Laifeng-Xianfeng block,Hubei[J].Natural Gas Industry,36(8):29-35(in Chinese with English abstract)
Li Hai,Bai Yun-shan,Wang Bao-zhong,Zhang Guo-tao.2014.Preservation conditions research on shale gas in the Lower Paleozoic of western Hunan and Hubei area[J].Petroleum Geology and Recovery Efficiency,21(6):22-26(in Chinese with English abstract)
Liang Di-gang,Guo Tong-lou,Chen Jian-ping,Bian Li-zeng,Zhao Zhe.2008.Some progresses on studies of hydrocarbon generation and accumulation in marine sedimentary regions,Southern China(Part1):Distribution of four suits of regional marine source rocks[J].Marine Origin Petroleum Geology,13(2):1-16(in Chinese with English abstract)
Liu Hong-lin,Wang Hong-yan.2013.Ultra-low water saturation characteristics and the identification of over pressured play fairways of marine shales in south China[J].Natural Gas Industry,33(7):140-144(in Chinese with English abstract)
Liu Zi-yi,Zhang Jin-chuan,Liu Yang,Yu Wen-wu,He Wei,Li Bowen.2016.The particle size characteristics of pyrite in Western Hunan and Hubei areas'Wufeng-Longmaxi formation shale[J].Science Technology and Engineering,16(26):34-41(in Chinese with English abstract)
Long Peng-yu,Zhang Jin-chuan,Li Yu-xi,Tang Xuan,Cheng Li-jun,Han Shuang-biao.2012.Reservoir-forming conditions and strategic select favorable area of shale gas in the Lower Paleozoic of Chongqing and its adjacent areas[J].Earth Science Frontiers,19(2):221-233(in Chinese with English abstract)
Nie Hai-kuan,Zhang Jin-chuan.2012.Shale gas accumulation conditions and gas content calculation:A case study Sichuan basin and its periphery in the lower Paleozoic[J].Acta Gelogica Sinica,86(2):349-360(in Chinese with English abstract)
Nie Hai-kuan,Zhang Jin-chuan,Bao Shu-jing,Song Xiao-jiao,Liu Jian-bin.2012.Shale gas accumulation conditions of the Upper Ordovician-Lower Silurian in Sichuan basin and its periphery[J].Oil&Gas Geology,33(3):335-345(in Chinese with English abstract)
Tang Ying,Zhang Jin-chuan,Liu Zhu-jiang,Li Le-zhong.2011.Use and improvement of the desorption method in shale gas content tests[J].Natural Gas Industry,31(10):108-112,128(in Chinese with English abstract)
Yang Fei,Ye Jian-zhong.2011.Structural characteristics and shale gas exploration potential in southeast Sichuan-western Hubei and Hunan areas[M].Wuhan:China University of Geosciences Press:1-124(in Chinese)
Yang Ping,Xie Yuan,Li Xu-bing,Bo Dao-yuan,Liu Zao-xue,Chen Hou-guo.2012.Hydrocarbon-generating potential of the source rocks of the Sinian Doushantuo Formation on the western side of the Xuefeng Mountain[J].Geology in China,39(5):1299-1309(in Chinese with English abstract)
Xie Long,Tao Gang,Liu He.2016.Geochemical characteristics of the Upper Triassic Tumengcla Formation source rocks in the Tumen area of the Qiangtang basin[J].Geology and Exploration,52(4):774-782(in Chinese with English abstract)
Zhang Jin-chuan,Jin Zhi-jun,Yuan Ming-sheng.2004.Reservoiring mechanism of shale gas and its distribution[J].Natural Gas Industry,24(7):5-18(in Chinese with English abstract)
陈康,张金川,唐玄,于京都,刘飏,杨超.2016.湘鄂西地区下志留统龙马溪组页岩吸附能力主控因素[J].石油与天然气地质,37(1):23-29
丁文龙,李超,李春燕,许长春,久凯,曾维特.2012.页岩裂缝发育主控因素及其对含气性影响[J].地学前缘,19(2):212-220
董大忠,王玉满,黄旭楠,张晨晨,管全中,黄金亮,王淑芳,李新景.2016.中国页岩气地质特征、资源评价方法及关键参数[J].天然气地球科学,27(9):1583-1601
范文斐,侯读杰,狄萌卿.2016.渝东南地区下古生界富有机质页岩有机岩石学特征[J].地质与勘探,52(2):346-356
李博,魏国庆,洪克岩,彭传圣,胡晓兰,朱亮亮.2016.中国南方盆外复杂构造区页岩气井评价与认识-以湖北来凤咸丰区块来页1井为例[J].天然气工业,36(8):29-35
李海,白云山,王保忠,张国涛.2014.湘鄂西地区下古生界页岩气保存条件[J].油气地质与采收率,21(6):22-26
梁狄刚,郭彤楼,陈建平,边立曾,赵喆.2008.中国南方海相生烃成藏研究的若干新进展(一):南方四套区域性海相烃源岩的分布[J].海相油气地质,13(2):1-16
刘洪林,王红岩.2013.中国南方海相页岩超低含水饱和度特征及超压核心区选择指标[J].天然气工业,33(7):140-144
刘子驿,张金川,刘飏,余文武,何葳,李波文.2016.湘鄂西地区五峰-龙马溪组泥页岩黄铁矿粒径特征[J].科学技术与工程,16(26):34-41
龙鹏宇,张金川,李玉喜,唐玄,程礼军,韩双彪.2012.重庆及其周缘地区下古生界页岩气成藏条件及有利区预测[J].地学前缘,19(2):221-233
聂海宽,张金川.2012.页岩气聚集条件及含气量计算-以四川盆地及周缘下古生界为例[J].地质学报,86(2):349-360
聂海宽,张金川,包书景,边瑞康,宋晓蛟,刘建斌.2012.四川盆地及其周缘上奥陶统-下志留统页岩气聚集条件[J].石油与天然气地质,33(3):335-345
唐颖,张金川,刘珠江,李乐忠.2011.解吸法测量页岩含气量及其方法的改进[J].天然气工业,31(10):108-112,128
谢龙,陶刚,刘和,李超.2016.羌塘盆地土门地区上三叠统土门格拉组烃源岩地球化学特征[J].地质与勘探,52(4):774-782
杨飞,叶建中.2011.川东南-湘鄂西地区构造特征与页岩气勘探潜力[M].武汉:中国地质大学出版社:1-124
杨平,谢渊,李旭兵,柏道远,刘早学,陈厚国.2012.雪峰山西侧震旦系陡山沱组烃源岩生烃潜力及油气地质意义[J].中国地质,39(5):1299-1309
张金川,金之钧,袁明生.2004.页岩气成藏机理和分布[J].天然气工业,24(7):5-18