页岩含气量理论图版

doi:10.11743/ogg20150220

摘要/Abstract

摘要： 页岩含气量主要包括游离气含量和吸附气含量，其中游离气含量的影响因素有孔隙度、含气饱和度、密度、压力、温度等，而影响吸附气含量的因素有有机碳含量、有机质成熟度、压力、温度等。不同有机质类型的页岩吸附能力（吸附量/有机碳含量）差别较大，且Ⅲ型＞Ⅱ型＞Ⅰ型，并分别建立了游离气含量和吸附气含量的计算公式。为了快速、准确地获取页岩含气量，分析并筛选了页岩含气量主控关键参数，基于含气量理论计算公式等相关理论计算得出不同有机质类型的页岩含气量图版。总体上，页岩含气量随深度增加而变大，但变大趋势逐渐降低。页岩含气量图版理论值与页岩现场测试含气量相关性拟合表明图版具有广泛的实用性。在页岩气勘探初期地质参数较少的情况下，页岩含气量图版的建立从理论上预测含气量，为合理评价页岩气资源潜力和预测有利区提供了依据。

关键词: 图版, 游离气, 吸附气, 有机质类型, 页岩气

Abstract: Shale gas content is composed of free gas contentand adsorbed gas content.The free gas content may be inf-luenced by porosity,gas saturation,density,pressure and temperature,whilethe adsorbed gas content is affected by organic carbon content,organic matter maturity,pressure and temperature.The adsorption capacities of organic matters of diffe-rent types(adsorption/TOC)of shale are quite different,and show the sequence of Ⅲ>Ⅱ>Ⅰ.Thus,different formulas were proposed for the calculation of free gas content and adsorbed gas content.Through analyzing and selecting the key factors for shale gas content,and based on relational theoretical calculations,charts of shale gas content were developed for different organic matter types,so as to quickly and accurately calculate shale gas content.Overall,shale gas content increases with depth,but the increment decreases progressively.The theoretical values calculated with the charts correlate well with the field measured values,indicating the wide applicability of these charts.The theoretical shale gas content obtained with these charts can provide a reliable basis for the reasonable evaluation of shale gas resource potential and prediction of play fairways in the early stage of shale gas exploration when the available geologic parameters are rare.

Key words: chart, free gas, adsorbed gas, organic matter type, shale gas

中图分类号:

TE122.1

薛冰,张金川,杨超,等. 页岩含气量理论图版[J]. 石油与天然气地质, 2015, 36(2): 339-346. doi: 10.11743/ogg20150220 Xue Bing,Zhang Jinchuan,Yang Chao,et al. Theoretical chart of shale gas content[J]. Oil & Gas Geology, 2015, 36(2): 339-346. doi: 10.11743/ogg20150220

参考文献

[1] 聂海宽,张金川.页岩气聚集条件及含气量计算——以四川盆地及其周缘下古生界为例[J].地质学报,2012,02:349-361. Nie Haikuan,Zhang Jinchuan.Shale gas accumulation conditions and gas content calculation:a case study of Sichuan basin and its periphery in the lower Paleozoic[J].Acta Geologica Sinica,2012,02:349-361.
[2] 张金川,林腊梅,李玉喜,等.页岩气资源评价方法与技术:概率体积法[J].地学前缘,2012,19(2):184-191. Zhang Jinchuan,Lin Lamei,Li Yuxi,et al.The method of shale gas assessment:probability volume method[J].Earth Science Frontiers,2012,19(2):184-191.
[3] 张琴,刘洪林,拜文华,等.渝东南地区龙马溪组页岩含气量及其主控因素分析[J].天然气工业,2013,05:35-39. Zhang Qin,Liu Honglin,Bai Wenhua,et al.Shale gas content and its main controlling factors in Longmaxi shales in southeastern Chongqing[J].Natural Gas Industry,2013,05:35-39.
[4] 李玉喜,乔德武,姜文利,等.页岩气含气量和页岩气地质评价综述[J].地质通报,2011,30(2/3):308-317. Li Yuxi,Qiao Dewu,Jiang Wenli,et al.Gas content of gas-bearing shale and its geological evaluation summary[J].Geological Bulletin of China,2011,30(2/3):308-317
[5] 杨超,张金川,李婉君,等.辽河坳陷沙三、沙四段泥页岩微观孔隙特征及其成藏意义[J].石油与天然气地质,2014,04:286-294. Yang Chao,Zhang Jinchuan,Li Wanjun,et al.Microscopic pore characteristic of Sha-3 and Sha-4 shale and their accumulation significance in Liaohe Depression[J].Oil & Gas Geology,2014,04:286-294.
[6] 葛明娜,张金川,李晓光,等.辽河东部凸起上古生界页岩含气性分析[J].断块油气田,2012,06:722-726. Ge Mingna,ZhangJinchuan,Li Xiaoguang,et al.Gas-bearing property analysis on Upper Paleozoic shale in eastern Uplift of Liaohe Basin[J].Fault Block Oil & Gas Field,2012,06:722-726.
[7] 谢忱,张金川,李玉喜.渝东南渝科1井下寒武统富有机质页岩发育特征与含气量[J].石油与天然气地质,2013,34 (1):11-15. Xie Chen,Zhang Jinchuan,Li Yuxi,et al.Characteristics and gas content of the Lower Cambriandark shale in Well Yuke 1,Southeast Chongqing[J].Oil & Gas Geology,2013,34 (1):11-15.
[8] 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.
[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,2010,06:641-653. Zou Caineng,Dong Dazhong,Wang Shejiao,et al.Geological characteristics,forrnation mechanism and resource potential of shale gas in China[J].Petroleum Explortion and Development,2010,06:641-653.
[10] 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,2004,07:15-18. Zhang Jinchuan,Jin Zhijun,Yuan Mingsheng.Shale gas accumulation mechanism and its ditribution[J].Natural Gas Industry,2004,07:15-18.
[11] 李娟,于炳松,张金川,等.黔北地区下寒武统黑色页岩储层特征及其影响因素[J].石油与天然气地质,2012,33 (3):364-374. Li Juan,Yu Bingsong,Zhang Jinchuan,et al.Reservoir characteristics and their influence factors of the Lower Cambrian dark shale in northern Guizhou[J].Oil & Gas Geology,2012,33 (3):364-374.
[12] 韩双彪,张金川,邢雅文,等.渝东南下志留统龙马溪组页岩气聚集条件与资源潜力[J].煤炭学报,2013,z1:168-173. Han Shuangbiao,Zhang Jinchuan,Xing Yawen,et al.Shale gas accumulation conditions and resource potential of the Lower Silurian Longmaxi Formation in southeast Chongqing[J].Journal of China Coal Society,2013,z1:168-173.
[13] 张金川,边瑞康,荆铁亚,等.页岩气理论研究的基础意义[J].地质通报,2011,30(2/3):318-323. Zhang Jinchuan,Bian Ruikang,Jin Tieya,et al.Fundamental significance of gas shale theoretical research[J].Geological Bulletin of China,2011,30(2/3):318-323.
[14] 牟中海.计算地层古厚度的一种方法[J].石油实验地质,1993,04:414-422. Mou Zhonghai.A new method to calculate the ancient thickness of sedimentary sequences[J].Petroleum Geology & Experiment,1993,04:414-422.
[15] 涂乙,邹海燕,孟海平,等.页岩气评价标准与储层分类[J].石油与天然气地质,2014,35(1):153-158. Tu Yi,Zou Haiyan,Meng Haiping,et al.Evaluation criteria and classification of shale gas reservoirs[J].Oil & Gas Geology,2014,35(1):153-158.
[16] 单衍胜,张金川,李晓光,等.辽河盆地东部凸起太原组页岩气聚集条件及有利区预测[J].大庆石油学院学报,2012,01:1-8. Shan Yansheng,Zhang Jinchuan,Li Xiaoguang,et al.shale gas accumulation factors and prediction of favorable area of Taiyuan formation in Liaohe Eastern Uplift [J].Journal of Daqing Petroleum Institute,2012,36(1):1-7.
[17] 杨镱婷,张金川,王香增,等.陆相页岩气的泥页岩评价——以延长下寺湾区上三叠统延长组长7段为例[J].东北石油大学学报,2012,04:10-17. Yang Yiting,Zhang Jinchuan,Wang Xiangzeng,et al.Source rock evaluation of continental shale gas:a case study of Chang 7 of Mesozoic Yanchang Formation in Xia Siwan area of Yanchang[J].Journal of Northeast Petroleum University,2012,36(1):10-17.
[18] 龙鹏宇,张金川,李玉喜,等.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,2012,19(2):221-233. Long Pengyu,Zhang Jinchuan,Li Yuxi,et al.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,2012,19(2):221-233.
[19] Montgomery S L,Jarvie D M,Bowker K A,et al.Mississippian Barnett Shale,Fort Worth Basin,north central Texas:Gas shale play with multitrillion cubic foot potential[J].AAPG Bulletin,2005,89(2):155-175.
[20] 胡明毅,邓庆杰,胡忠贵.上扬子地区下寒武统牛蹄塘组页岩气成藏条件[J].石油与天然气地质,2014,35 (2):272-279. Hu Mingyi,Deng Qingjie,Hu Zhonggui.Shale gas accumulation conditions of the Lower Cambrian NiutitangFormation in Upper Yangtze region[J].Oil & Gas Geology,2014,35 (2):272-279.
[21] 李武广,杨胜来,徐晶,等.考虑地层温度和压力的页岩吸附气含量计算新模型[J].天然气地球科学,2012,04:791-796. Li Wuguang,Yang Shenglai,Xu Jing,et al,A new model for shale adsorptive gas amount under a certain geological conditions of temperature and pressure[J].Natural Gas Geoscience,2012,04:791-796.