王濡岳;王兴华;龚大建;尹帅;付福全;陈恩;

• 1:中国石油化工股份有限公司石油勘探开发研究院

• 2:中国地质大学(北京)能源学院

• 3:中国国储能源化工集团股份公司

• 4:西安石油大学地球科学与工程学院

摘要(Abstract)：

黔东南地区下寒武统发育牛蹄塘组与变马冲组两套黑色页岩,利用岩心、薄片观察、样品矿物组分、总有机碳(TOC)质量分数和岩石力学性质等,分析页岩裂缝发育特征及主控因素。结果表明:牛蹄塘组页岩裂缝以构造缝为主,构造缝主要为高角度剪性缝、张/压扭性裂缝及低角度滑脱缝;变马冲组二段页岩裂缝以非构造缝为主,主要为层理缝和层间缝。张/压扭性裂缝与低角度滑脱缝充填程度低、有效性高,能够改善储层孔渗能力。裂缝发育受构造因素、岩性与矿物组分、TOC质量分数及地层厚度等因素影响,裂缝密度与页岩脆性具有良好相关关系;TOC质量分数的增加有利于层间缝、低角度滑脱缝及张/压扭性裂缝发育。牛蹄塘组和变马冲组二段页岩TOC质量分数、石英质量分数、脆性及裂缝密度具有良好耦合关系;牛蹄塘组中部TOC质量分数(大于6.00%)过高层段裂缝总量降低,但低角度滑脱缝与张/压扭性裂缝比例增大,裂缝有效性增强。该结果对中国南方页岩气勘探开发具有参考意义。

关键词(KeyWords)：页岩;裂缝;发育特征;主控因素;下寒武统;牛蹄塘组;变马冲组;黔东南地区

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2017ZX05036-002-001,2017ZX05036-004-001,2017ZX05036-004-007);; 中国石油化工股份有限公司科技开发部项目(P17027-2)

作者(Author):王濡岳;王兴华;龚大建;尹帅;付福全;陈恩;

Email:

参考文献(References)：

• [1]胡宗全,杜伟,彭勇民,等.页岩微观孔隙特征及源—储关系——以川东南地区五峰组—龙马溪组为例[J].石油与天然气地质,2015,36(6):1001-1008.Hu Zongquan,Du Wei,Peng Yongmin,et al.Microscopic pore characteristics and the source-reservoir relationship of shale:A case study from the Wufeng and Longmaxi formations in southeast Sichuan basin[J].Oil&Gas Geology,2015,36(6):1001-1008.

• [2]金之钧,胡宗全,高波,等.川东南地区五峰组—龙马溪组页岩气富集与高产控制因素[J].地学前缘,2016,23(1):1-10.Jin Zhijun,Hu Zongquan,Gao Bo,et al.Controlling factors on the enrichment and high productivity of shale gas in the Wufeng-Longmaxi formation,southeastern Sichuan basin[J].Earth Science Frontiers,2016,23(1):1-10.

• [3]何治亮,聂海宽,张钰莹,等.四川盆地及其周缘奥陶系五峰组—志留系龙马溪组页岩气富集主控因素分析[J].地学前缘,2016,23(2):8-17.He Zhiliang,Nie Haikuan,Zhang Yuying,et al.The main factors of shale gas enrichment of Ordovician Wufeng formation-Silurian Longmaxi formation in the Sichuan basin and its adjacent areas[J].Earth Science Frontiers,2016,23(2):8-17.

• [4]梁狄刚,郭彤楼,陈建平,等.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,2008,13(2):1-16.Liang Digang,Guo Tonglou,Chen Jianping,et al.Some progresses on studies of hydrocarbon generation and accumulation in marine sedimentary regions,southern China(part 1):Distribution of four suits of regional marine ource rocks[J].Marine Origin Petroleum Geology,2008,13(2):1-16.

• [5]邢雅文,张金川,冯赫青,等.渝东南地区下寒武统页岩气聚集条件及有利区预测[J].东北石油大学学报,2014,38(3):66-74.Xing Yawen,Zhang Jinchuan,Feng Heqing,et al.Accumulation conditions and resource potential of lower Cambrian shale gas in southeast Chongqing[J].Journal of Northeast Petroleum University,2014,38(3):66-74.

• [6]庞飞,包书景,任收麦,等.修武盆地下寒武统页岩气富集条件及有利区预测[J].东北石油大学学报,2014,38(5):23-30.Pang Fei,Bao Shujing,Ren Shoumai,et al.Shale gas accumulation conditions and favorable areas of the lower Cambrian in Xiuwu basin[J].Journal of Northeast Petroleum University,2014,38(5):23-30.

• [7]孙梦迪,于炳松,陈颂,等.渝东南地区下寒武统牛蹄塘组页岩储层特征及甲烷吸附能力——以渝科1井和酉科1井为例[J].东北石油大学学报,2015,39(1):69-79.Sun Mengdi,Yu Bingsong,Chen Song,et al.Reservoir characteristics and adsorption capacity of the lower Cambrian Niutitang formation shale in southeast of Chongqing:A case study of well Yuke1and well Youke1[J].Journal of Northeast Petroleum University,2015,39(1):69-79.

• [8]董清源,田建华,冉琦,等.湖南永顺区块牛蹄塘组页岩气勘探前景及选区评价[J].东北石油大学学报,2016,40(30):61-69.Dong Qingyuan,Tian Jianhua,Ran Qi,et al.Exploration potential and favorable paly identification of Niutitang formation shale gas of Yongshun block in Hunan province[J].Journal of Northeast Petroleum University,2016,40(30):61-69.

• [9]聂海宽,包书景,高波,等.四川盆地及其周缘下古生界页岩气保存条件研究[J].地学前缘,2012,19(3):280-294.Nie Haikuan,Bao Shujing,Gao Bo,et al.A study of shale gas preservation conditions for the lower Paleozoic in Sichuan basin and its periphery[J].Earth Science Frontiers,2012,19(3):280-294.

• [10]王濡岳,丁文龙,龚大建,等.黔北地区海相页岩气保存条件——以贵州岑巩区块下寒武统牛蹄塘组为例[J].石油与天然气地质,2016,37(1):45-55.Wang Ruyue,Ding Wenlong,Gong Dajian,et al.Gas preservation conditions of marine shale in northern Guizhou area:A case study of the lower Cambrian Niutitang formation in the Cengong block,Guizhou province[J].Oil&Gas Geology,2016,37(1):45-55.

• [11]王濡岳,龚大建,冷济高,等.黔北地区下寒武统牛蹄塘组页岩储层发育特征:以岑巩区块为例[J].地学前缘,2017,24(6):286-299.Wang Ruyue,Gong Dajian,Leng Jigao,et al.Developmental characteristics of the lower Cambrian Niutitang shale reservoir in northern Guizhou area:A case study in the Cengong block[J].Earth Science Frontiers,2017,24(6):286-299.

• [12]魏祥峰,李宇平,魏志红,等.保存条件对四川盆地及周缘海相页岩气富集高产的影响机制[J].石油实验地质,2017,39(2):147-153.Wei Xiangfeng,Li Yuping,Wei Zhihong,et al.Effects of preservation conditions on enrichment and high yield of shale gas in Sichuan basin and its periphery[J].Petroleum Geology&Experiment,2017,39(2):147-153.

• [13]张培先.黔中隆起及邻区下寒武统页岩气成藏特殊性分析[J].石油实验地质,2017,39(2):162-168.Zhang Peixian.Peculiar accumulation conditions for shale gas in the lower Cambrian in Qianzhong uplift and its periphery[J].Petroleum Geology&Experiment,2017,39(2):162-168.

• [14]Bowker K A.Barnett shale gas production,Fort Worth basin:Issues and discussion[J].AAPG Bulletin,2007,91(4):523-533.

• [15]Gale J F W,Reed R M,Holder J.Natural fractures in the Barnett shale and their importance for hydraulic fracture treatments[J].AAPG Bulletin,2007,91(4):603-622.

• [16]Gale J F W,Laubach S E,Olson J E,et al.Natural fractures in shale:A review and new observations[J].AAPG Bulletin,2014,98(11):2165-2216.

• [17]王濡岳,丁文龙,龚大建,等.渝东南-黔北地区下寒武统牛蹄塘组页岩裂缝发育特征与主控因素分析[J].石油学报,2016,37(7):832-845.Wang Ruyue,Ding Wenlong,Gong Dajian,et al.Development characteristics and major controlling factors of shale fractures in the lower Cambrian Niutitang formation,southeastern Chongqing-northern Guizhou area[J].Acta Petrolei Sinica,2016,37(7):832-845.

• [18]秦长文,秦璇.美国鹰滩和尼奥泊拉拉页岩油富集主控因素[J].特种油气藏,2015,22(4):34-37.Qin Changwen,Qin Xuan.Major controlling factors for shale oil enrichment in Eagle Ford and Niobrara plays[J].Special Oil&Gas Reservoirs,2015,22(4):34-37.

• [19]车世琦.四川盆地涪陵地区页岩裂缝测井定量识别[J].特种油气藏,2017,24(6):72-78.Che Shiqi.Quantitative identification of shale fractures with logging in Fuling of Sichuan basin[J].Special Oil&Gas Reservoirs,2017,24(6):72-78.

• [20]刘忠宝,高波,张钰莹,等.上扬子地区下寒武统页岩沉积相类型及分布特征[J].石油勘探与开发,2017,44(1):21-31.Liu Zhongbao,Gao Bo,Zhang Yuying,et al.Types and distribution of the shale sedimentary facies of the lower Cambrian in upper Yangtze area,south China[J].Petroleum Exploration and Development,2017,44(1):21-31.

• [21]徐世球,杨家,李富强,等.川黔湘交境早寒武世“变马冲组”沉积层序与古环境[J].地球科学,1997,22(5):520-525.Xu Shiqiu,Yang Jia,Li Fuqiang,et al.Sedimentary sequence and paleoenviroment of"Bianmachong formation"in early Cambrian in the boundary area of Sichuan,Guizhou and Hunan[J].Earth Science,1997,22(5):520-525.

• [22]Cobbold P R,Zanella A,Rodrigues N,et al.Bedding-parallel fibrous veins(beef and cone-in-cone):Worldwide occurrence and possible significance in terms of fluid overpressure,hydrocarbon generation and mineralization[J].Marine and Petroleum Geology,2013,43(4):1-20.

• [23]杨平,谢渊,汪正江,等.黔北震旦系灯影组流体活动与油气成藏期次[J].石油勘探与开发,2014,41(3):313-322.Yang Ping,Xie Yuan,Wang Zhengjiang,et al.Fluid activity and hydrocarbon accumulation period of Sinian Dengying formation in northern Guizhou,south China[J].Petroleum Exploration and Development,2014,41(3):313-322.

• [24]Wang Xinhua,Ding Wenlong,Cui Long,et al.The developmental characteristics of natural fractures and their significance for reservoirs in the Cambrian Niutitang marine shale of the Sangzhi block,southern China[J].Journal of Petroleum Science and Engineering,2018,165:831-841.

• [25]王濡岳,龚大建,丁文龙,等.上扬子地区下寒武统牛蹄塘组页岩储层脆性评价:以贵州岑巩区块为例[J].地学前缘,2016,23(1):87-95.Wang Ruyue,Gong Dajian,Ding Wenlong,et al.Brittleness evaluation of the lower Cambrian Niutitang shale in the upper Yangtze region:A case study in the Cengong block,Guizhou province[J].Earth Science Frontiers,2016,23(1):87-95.

• [26]刘庆,张林晔,沈忠民,等.东营凹陷富有机质烃源岩顺层微裂隙的发育与油气运移[J].地质论评,2004,50(6):593-597.Liu Qing,Zhang Linye,Shen Zhongmin,et al.Microfracture occurrence and its significance to the hydrocarbons expulsion in source rocks with high organic matter abundance,Dongying depression[J].Geological Review,2004,50(6):593-597.

• [27]Laubach S E,Olson J E,Gross M R.Mechanical and fracture stratigraphy[J].AAPG Bulletin,2009,93(11):1413-1426.