黔东南地区岑巩页岩气区块勘探潜力

doi:10.11743/ogg20130221

摘要/Abstract

摘要：

上扬子地台页岩气资源丰富,特别是下寒武统牛蹄塘组勘探潜力巨大。岑巩页岩气区块位于上扬子地台牛蹄塘组主要页岩气富集区,其页岩气勘探潜力亟待深入和准确评价。运用地层对比、储层分析和烃源岩地球化学分析等手段,结合前人研究成果,对岑巩页岩气区块的构造、储层和烃源岩特征进行了系统研究。通过上述研究,厘定了研究区牛蹄塘组地层的分布范围、储层物性、烃源岩厚度等参数及其分布特征,结合岑页1井含气量测试结果,进一步计算了该区块的资源量。结果表明,岑巩页岩气区块牛蹄塘组有机质类型主要为Ⅰ型和Ⅱ₁型;烃源岩有机质含量高,平均为3.38%;计算镜质体反射率平均为3.56%,达到成熟晚期阶段;储层具有低孔-超低渗、高比表面积特征;区块的可采资源量达71.94×10⁸ m³。由此可认为,岑巩页岩气区块具备了较好的烃源岩、储层、埋藏条件,可采资源量大,可以选择该区块的民和、羊桥和大坪等有利地区进行下一步的勘探和评价工作。

关键词: 地质特征, 页岩气, 牛蹄塘组, 岑巩区块, 黔东地区, 上扬子地台

Abstract:

The shale gas resources are rich in the Upper Yangtze platform,especially the Lower Cambrian Niutitang Formation.Cen'gong shale gas block is located within the Niutitang shale gas play on the Upper Yangtze platform.This paper systematically studied the structure,source rocks and reservoirs characteristics of the Niutitang Formation in Cen'gong block through stratigraphic correlation,laboratory test of reservoir rock sample and geochemical analysis of source rock samples and in combination with previous study results.The distribution of Niutitang Formation,reservoir physical property and thickness of source rocks were mapped.Further more,the resource volume of shale gas was calculated by using the gas content data obtained from testing in well Cenye 1 that the following results were obtained.The organic matters of the Niutitang Formation are mainly of typeⅠand typeⅡ₁.The average organic matter content of the source rock is as high as 3.38%.The average R_o is calculated to be 3.56%,which reflects the source rock has entered high maturation stage.The reservoirs are characterized by low porosity-ultralow permeability and large specific surface area.The recoverable resource volume of shale gas is estimated at 7.19 billion cubic meters.The Minhe,Yangqiao and Daping areas of the Cen'gong block can be selected as favorable shale gas play fairways for further exploration and evaluation.

Key words: geological characteristics, shale gas, Niutitang Formation, Cen'gong block, southeastern Guizhou province, Upper Yangtze platform

中图分类号:

TE121.1

聂永生,冷济高,韩建辉,等. 黔东南地区岑巩页岩气区块勘探潜力[J]. 石油与天然气地质, 2013, 34(2): 274-280. doi: 10.11743/ogg20130221 Nie Yongsheng,Leng Jigao,Han Jianhui,et al. Exploration potential of shale gas in Cen'gong block,southeastern Guizhou province[J]. Oil & Gas Geology, 2013, 34(2): 274-280. doi: 10.11743/ogg20130221

参考文献

[1] 张金川,徐波,聂海宽,等.中国页岩气资源勘探潜力[J].天然气工业,2008,28(6):136-140. Zhang Jinchuan,Xu Bo,Nie Haikuan,et al.Exploration potential of shale gas resources in china[J].Natural Gas Industry,2008,28(6):136-140.
[2] 张金川,金之钧,袁明生.页岩气成藏机理和分布[J].天然气工业,2004,24(7):15-18. Zhang Jinchuan,Jin Zhijun,Yuan Mingsheng.Reservoiring mechanism of shale gas and its distribution[J].Natural Gas Industry,2004,24(7):15-18.
[3] 张金川,姜生玲,唐玄,等.我国页岩气富集类型及资源特点[J].天然气工业,2009,29(12):1-6. Zhang Jinchuan,Jiang Shengling,Tang Xuan,et al.Accumulation type and resources characteristics of shale gas in China[J].Natural Gas Industry,2009,29(12):1-6.
[4] 李玉喜,聂海宽,龙鹏宇.我国富含有机质泥页岩发育特点与页岩气战略选区[J].天然气工业,2009,29(12):115-118. Li Yuxi,Nie Haikuan,Long Pengyu.Development characteristics of organic rich shale and strategic selection of shale gas exploration area in China[J].Natural Gas Industry,2009,29(12):115-118.
[5] 张大伟.加速我国页岩气资源调查和勘探开发战略构想[J].石油与天然气地质,2010,31(2):135-139,150. Zhang Dawei.Strategic concepts of accelerating the survey,exploration and exploitation of shale gas resources in China[J].Oil & Gas Geology,2010,31(2):135-139,150.
[6] 程克明,王世谦,董大忠,等.上扬子区下寒武统筇竹寺组页岩气成藏条件[J].天然气工业,2009,29(5):40-44. Cheng Keming,Wang Shiqian,Dong Dazhong,et al.Accumulation conditions of shale gas reservoirs in the lower Cambrian Qiongzhusi formation,the upper Yangtz region[J].Natural Gas Industry,2009,29(5):40-44.
[7] 李世臻,乔德武,冯志刚,等.世界页岩气勘探开发现状及对中国的启示[J].地质通报,2010,29(6):918-924. Li Shizheng,Qiao Dewu,Feng Zhigang,et al.The state of worldwide shale gas exploration and its suggestion for China[J].Geological Bulletin of China,2010,29(6):918-924.
[8] 闫存章,黄玉珍,葛春梅,等.页岩气是潜力巨大的非常规天然气资源[J].天然气工业,2009,29(5):1- 6. Yan Cunzhang,Huang Yuzhen,Ge Chunmei,et al.Shale gas:Enormouspotential of unconventional natural gas resources[J].Natural Gas Industry,2009,29(5):1- 6.
[9] 邹才能,董大忠,王社教,等.中国页岩气形成机理、地质特征及资源潜力[J].石油勘探与开发,2010,37(6):641-653. Zou Caineng,Dong Dazhong,Wang Shejiao,et al.Geological characteristics,formation mechanism and resource potential of shale gas in China[J].Petroleum Exploration and Development,2010,37(6):641-653.
[10] 李新景,胡素云,程克明.北美裂缝性页岩气勘探开发的启示[J].石油勘探与开发,2007,34(4):392-400. Li Xinjing,Hu Suyun,Cheng Keming.Suggestions of from the develop-ment of fractured shale gas in North America[J].Petroleum Exploration and Development,2007,34(4):392-400.
[11] 魏全超,朱冬梅,黄文明.川东南下寒武统牛蹄塘组烃源岩特征及有效性分析[J].四川地质学报,2012,32(1):69-73. Wei Quanchao,Zhu Dongmei,Huang Wenming.Characteristics and validity analysis of hydrocarbon source rock in the lower Cambrian Niutitang formation in Southeast Sichuan[J].Acta Geological Sichuan,2012,32(1):69-73.
[12] 何金先,段毅,张晓丽,等.贵州地区下寒武统牛蹄塘组黑色页岩地质特征及其油气资源意义[J].西安石油大学学报(自然科学版),2011,26(3):37-42. He Jinxian,Duan Yi,Zhang Xiaoli,et al.Geological characteristics of its oil and gas resources significance in the lower Cambrian Niutitang formation in Guizhou area[J].Journal of Xi'an Shiyou University(Natural Science Edition),2011,26(3):37-42.
[13] 杨剑,易发成.贵州-湖南黑色岩系的有机碳和有机硫特征及成因意义[J].地质科学,2005,40(4):457-463. Yang Jian,Yi Facheng.Genesis andorganic carbon/ sulphur characteristics of the lower Cambrian black shale series in Guizhou-Hunan[J].Chinese Journal of Geology,2005,40(4):457-463.
[14] 杨剑,易发成,钱壮志.黔北黑色岩系干酪根特征与碳同位素指示意义[J].矿物岩石,2005,25(1):99-103. Yang Jian,Yi Facheng,Qian Zhuangzhi.Characteristics of lower Cambrian black shale series' kerogen and their carbon isotope implications in Northern Guizhou Province[J].Mineral Petrology,2005,25(1):99-103.
[15] 聂海宽,唐玄,边瑞康.页岩气成藏控制因素及中国南方页岩气发育有利区预测[J].石油学报,2009,30(4):484-491. Nie Haikuan,Tang Xuan,Bian Ruikang.Controlling factors for shale gas accumulation and prediction of potential development area in shale gas reservoir of South China [J].Acta Petrolei Sinica,2009,30(4):484-491.
[16] 冯增昭,彭勇民,金振奎,等.中国南方寒武纪岩相古地理[J].古地理学报,2001,3(1):1-14. Feng Zhenzhao,Peng Yongmin,Jin Zhenkui,et al.Lithofacies Palaeogegraphy of theCambrian in South China[J].Journal of Palaeogeography,2001,3(1):1-14.
[17] 马永生,陈洪德,王国力,等.中国南方层序地层与古地理[M].北京:科学出版社,2009. Ma Yongsheng,Cheng Hongde,Wang Guoli,et al.Sequence stratigraphy and paleogeography in South China[M].Beijing:Science Press,2009.
[18] 滇黔桂石油地质志编写组.中国石油地质志——滇黔桂油气区[M].北京:石油工业出版社,1992. The petroleum geology group of Dianqiangui.Petroleum geology of China—oil and gas area of Dianqiangui[M].Beijing:Petroleum Industry Press,1992.
[19] 贵州省地质矿产局.贵州省区域地质志[M].北京:地质出版社,1987. Geology and mineral bureau of Guizhou province.Regional geology of Guizhou province[M].Beijing:Geological Publishing House,1987.
[20] 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(PertⅠ):distribution of four suits of regional marine source rocks[J].Marine Origin Petroleum Geology,2008,13(2):1-16.
[21] 董大忠,程克明,王玉满,等.中国上扬子区下古生界页岩气形成条件及特征[J].石油与天然气地质,2010,31(3):288-299. Dong Dazhong,Cheng Keming,Wang Yuman,et al.Forming conditionsand characteristics of shale gas in the lower Paleozoic of the upper Yangtze region,China[J].Oil & Gas Geology,2010,31(3):288-299.
[22] Jacob H.Disperse solid bitumens as an indicator for migration and maturity in prospecting for oil and gas[J].Erdol and Kohgle,1985,38(3):365.
[23] Montgomery S L,Jarvie D M,Bowker K A,et al.Mississippian Barnett Shale,Fort Worth basin,north -central Texas:gas-shale play with multi-trillion cubic foot potential[J].AAPG Bulletin,2005,89(2):155-175.
[24] Pollastro R M.Total petroleum system assessment of undiscovered resources in the giant Barnett Shale continuous (unconventional) gas accumulation,Fort Worth Basin,Texas[J].AAPG Bulletin,2007,91(4):551-578.
[25] Milan K.Database gathers Europe shale data[J].AAPG Explorer,2009,30(11):10.
[26] 《页岩气地质与勘探开发实践丛书》编委会.北美地区页岩气勘探开发新进展[M].北京:石油工业出版社,2009:1-271. Editorial committee of "Series of book on the geology and exploratory development of shale gas".Recent progresses of shale gas development in the North America[M].Beijing:Petroleum Industry Press,2009:1-271.