天然气储层含气性定量评价新参数
|
摘要
天然气储层产能评价是储层测井综合解释的重要环节。但是,目前采用的天然气储层含气饱和度不能有效表征天然气储层的含气性。为此,在分析含气饱和度在天然气储层产能评价中所存在局限性的基础上,基于天然气物质的量和理想气体状态方程,提出了相对气体摩尔量定量评价储层含气性的新参数,给出了该参数的确定方法,并对鄂尔多斯盆地苏里格气田致密砂岩气藏某井进行了测井评价及相对气体摩尔量参数计算,分析了该参数的应用效果。研究结果表明:①相对气体摩尔量参数受孔隙度、含气饱和度和孔隙压力及天然气压缩因子的共同控制,精确计算孔隙压力和天然气压缩因子是确定相对气体摩尔量参数的核心;②储层的含气饱和度与储层的产气能力并非一一对应,高含气饱和度储层不一定都能获得高产,而相对中等含气饱和度的储层也有可能获得高产;③相对气体摩尔量参数能够精确反映储层的绝对含气量,在储层含气级别识别方面有着较好的应用效果,其数值大小能够直接指示储层含气性的好坏。结论认为,该研究成果为天然气测井综合解释提供了一条新的思路。
Productivity evaluation of natural gas reservoirs is an important part of comprehensive reservoir logging interpretation. However, the currently adopted gas saturation cannot effectively characterize the gas-bearing property of natural gas reservoirs. In this paper,the limitations of gas saturation in the evaluation of natural gas reservoir productivity were analyzed. Then, based on the quantity of natural gas and the ideal gas state equation, a new parameter for quantitative evaluation of the gas-bearing property of reservoirs was proposed, i.e., relative molar volume of gas, and its determination method were provided. Finally, logging evaluation was carried out on a certain well in the tight sandstone gas reservoir of the Sulige Gas Field in the Ordos Basin. What's more, its relative molar volume of gas was calculated, and the application effect was analyzed. And the following research results were obtained. First, the relative molar volume of gas is controlled jointly by porosity, saturation, pore pressure and natural gas compressibility factor, and the accurate calculation of pore pressure and natural gas compressibility factor is the core of determining the relative molar volume of gas. Second, there is no oneto-one corresponding relationship between the gas saturation of a reservoir and its gas-producing capacity. In some conditions, reservoirs with high gas saturation are not always productive. On the contrary, reservoirs with relatively moderate gas saturation may also be highly productive. Third, the relative molar volume of gas can precisely reflect the absolute gas content of a reservoir. In addition, its application in identifying the gas-bearing level of a reservoir is remarkable, and its value can directly indicate the gas-bearing property of a reservoir.In conclusion, the research results provide a new idea for the comprehensive interpretation of natural gas logging.
Productivity evaluation of natural gas reservoirs is an important part of comprehensive reservoir logging interpretation. However, the currently adopted gas saturation cannot effectively characterize the gas-bearing property of natural gas reservoirs. In this paper,the limitations of gas saturation in the evaluation of natural gas reservoir productivity were analyzed. Then, based on the quantity of natural gas and the ideal gas state equation, a new parameter for quantitative evaluation of the gas-bearing property of reservoirs was proposed, i.e., relative molar volume of gas, and its determination method were provided. Finally, logging evaluation was carried out on a certain well in the tight sandstone gas reservoir of the Sulige Gas Field in the Ordos Basin. What's more, its relative molar volume of gas was calculated, and the application effect was analyzed. And the following research results were obtained. First, the relative molar volume of gas is controlled jointly by porosity, saturation, pore pressure and natural gas compressibility factor, and the accurate calculation of pore pressure and natural gas compressibility factor is the core of determining the relative molar volume of gas. Second, there is no oneto-one corresponding relationship between the gas saturation of a reservoir and its gas-producing capacity. In some conditions, reservoirs with high gas saturation are not always productive. On the contrary, reservoirs with relatively moderate gas saturation may also be highly productive. Third, the relative molar volume of gas can precisely reflect the absolute gas content of a reservoir. In addition, its application in identifying the gas-bearing level of a reservoir is remarkable, and its value can directly indicate the gas-bearing property of a reservoir.In conclusion, the research results provide a new idea for the comprehensive interpretation of natural gas logging.
引文
[1]谭廷栋.天然气勘探中的测井技术[M].北京:石油工业出版社,1994.Tan Tingdong.Logging technology in natural gas exploration[M].Beijing:Petroleum Industry Press,1994.
[2]赵彦超,吴春萍,吴东平.致密砂岩气层的测井评价——以鄂尔多斯盆地大牛地山西组一段气田为例[J].地质科技情报,2003,22(4):65-70.Zhao Yanchao,Wu Chunping&Wu Dongping.Logging evaluation to tight gas sandstone:A case study from the first member of Shanxi Formation in Daniudi Gas Pool,Ordos Basin,China[J].Geological Science and Technology Information,2003,22(4):65-70.
[3]魏国齐,谢增业,李剑,杨威,张水昌,张奇,等.“十二五”中国天然气地质理论研究新进展[J].天然气工业,2017,37(8):1-13.Wei Guoqi,Xie Zengye,Li Jian,Yang Wei,Zhang Shuichang,Zhang Qi,et al.New research progress of natural gas geological theories in China during the 12th Five-Year Plan period[J].Natural Gas Industry,2017,37(8):1-13.
[4]李剑,王晓波,魏国齐,杨威,谢增业,李志生,等.天然气基础地质理论研究新进展与勘探领域[J].天然气工业,2018,38(4):37-45.Li Jian,Wang Xiaobo,Wei Guoqi,Yang Wei,Xie Zengye,Li Zhisheng,et al.New progress in basic natural gas geological theories and future exploration targets in China[J].Natural Gas Industry,2018,38(4):37-45.
[5]宋振响,陆建林,周卓明,王保华,杨昊.常规油气资源评价方法研究进展与发展方向[J].中国石油勘探,2017,22(3):21-31.Song Zhenxiang,Lu Jianlin,Zhou Zhuoming,Wang Baohua&Yang Hao.Research progress and future development of assessment methods for conventional hydrocarbon resources[J].China Petroleum Exploration,2017,22(3):21-31.
[6]朱兆群,林承焰,张苏杰,任丽华,赵剑轩,陈仕臻,等.改进的模糊-灰色综合评判方法在储层定量评价中的应用——以苏里格气田苏X井区盒8下亚段低渗透气藏为例[J].石油与天然气地质,2017,38(1):197-208.Zhu Zhaoqun,Lin Chengyan,Zhang Sujie,Ren Lihua,Zhao Jianxuan,Chen Shizhen,et al.Application of improved fuzzy-grey comprehensive evaluation method to quantitative reservoir evaluation:A case study of the low-permeability gas reservoirs of the lower part of 8th member of the Shihezi Formation in Su X block of Sulige Gasfield[J].Oil&Gas Geology,2017,38(1):197-208.
[7]戴金星,倪云燕,吴小奇.中国致密砂岩气及在勘探开发上的重要意义[J].石油勘探与开发,2012,39(3):257-264.Dai Jinxing,Ni Yunyan&Wu Xiaoqi.Tight gas in China and its significance in exploration and exploitation[J].Petroleum Exploration and Development,2012,39(3):257-264.
[8]赵永刚,常文会,冉利民.大牛地气田低孔低渗碎屑岩储层测井评价[M].北京:中国地质大学出版社,2010.Zhao Yonggang,Chang Wenhui&Ran Limin.Logging evaluation of low-porous low-permeability clastic rock reservoirs in Daniudi gas field[M].Beijing:China University of Geosciences Press,2010.
[9]康毅力,罗平亚.中国致密砂岩气藏勘探开发关键工程技术现状与展望[J].石油勘探与开发,2007,34(2):239-245.Kang Yili&Luo Pingya.Current status and prospect of key techniques for exploration and production of tight sandstone gas reservoirs in China[J].Petroleum Exploration and Development,2007,34(2):239-245.
[10]张福明,查明,邵才瑞,印兴耀.天然气的测井勘探与评价技术[J].地球物理学进展,2007,22(1):179-185.Zhang Fuming,Zha Ming,Shao Cairui&Yin Xingyao.Technology of natural gas exploration and evaluation based on well-logging data[J].Progress in Geophysics,2007,22(1):179-185.
[11]中国石油勘探与生产分公司.低孔低渗油气藏测井评价技术及应用[M].北京:石油工业出版,2009.PetroChina Exploration&Production Company.Evaluation technology and application of well logging in low-porosity and low-permeability oil and gas reservoirs[M].Beijing:Petroleum Industry Press,2009.
[12]欧阳健,毛志强,修立军,石玉江,李长喜.测井低对比度油层成因机理与评价方法[M].北京:石油工业出版,2009.Ouyang Jian,Mao Zhiqiang,Xiu Lijun,Shi Yujiang&Li Changxi.Mechanism and evaluation method of Low-resistivity logging pays of oil reservoir[M].Beijing:Petroleum Industry Press,2009.
[13]杨双定.鄂尔多斯盆地致密砂岩气层测井评价新技术[J].天然气工业,2005,25(9):45-47.Yang Shuangding.New methods of log evaluation of the tight sandstone gas reservoirs in E'erduosi Basin[J].Natural Gas Industry,2005,25(9):45-47.
[14]董瑞霞,范晓敏.致密砂岩气层综合识别方法的改进[J].世界地质,2003,22(2):89-94.Dong Ruixia&Fan Xiaomin.Improvement of method for distinguishing formation containing gas from compact sandstone[J].World Geology,2003,22(2):89-94.
[15]赵良孝,邢会民.天然气储层评价的新参数——充盈度[J].天然气工业,2010,30(6):31-34.Zhao Liangxiao&Xing Huimin.A new parameter for gas reservoir appraisal:Suffusive degree[J].Natural Gas Industry,2010,30(6):31-34.
[16]秦积顺,李爱芬.油层物理学[M].东营:中国石油大学出版社,2006.Qin Jishun&Li Aifen.Oil reservoir physics[M].Dongying:China University of Petroleum Press,2006.
[17]林伟川,冯春珍,赵惠,赵静.低孔隙度低渗透率储层孔隙压力流体评价方法[J].测井技术,2006,30(4):334-337.Lin Weichuan,Feng Chunzhen,Zhao Hui&Zhao Jing.A technique of pore hydro-pressure identification for low permeability and low porosity reservoirs[J].Well Logging Technology,2006,30(4):334-337.
[18]杨振平,吴波,王勇.Eaton法预测M油田地层孔隙压力[J].石油天然气学报,2012,34(9):181-182.Yang Zhenping,Wu Bo&Wang Yong.Application of Eaton method in predicting the formation pore pressure of M oilfield[J].Journal of Oil and Gas Technology,2012,34(9):181-182.
[19]童凯军,周文,单钰铭.致密砂岩气藏地层孔隙压力预测方法[J].科技导报,2010,28(15):62-66.Tong Kaijun,Zhou Wen&Shan Yuming.Prediction of formation porosity pressure in deep formation[J].Science&Technology Review,2010,28(15):62-66.
[20]彭海龙,刘兵,赫建伟,李文拓,吴云鹏.深水盆地高温高压环境下的地层压力预测方法[J].天然气工业,2018,38(3):24-30.Peng Hailong,Liu Bing,He Jianwei,Li Wentuo&Wu Yunpeng.A formation pressure prediction method for deepwater basins under high temperatures and high pressures[J].Natural Gas Industry,2018,38(3):24-30.
[2]赵彦超,吴春萍,吴东平.致密砂岩气层的测井评价——以鄂尔多斯盆地大牛地山西组一段气田为例[J].地质科技情报,2003,22(4):65-70.Zhao Yanchao,Wu Chunping&Wu Dongping.Logging evaluation to tight gas sandstone:A case study from the first member of Shanxi Formation in Daniudi Gas Pool,Ordos Basin,China[J].Geological Science and Technology Information,2003,22(4):65-70.
[3]魏国齐,谢增业,李剑,杨威,张水昌,张奇,等.“十二五”中国天然气地质理论研究新进展[J].天然气工业,2017,37(8):1-13.Wei Guoqi,Xie Zengye,Li Jian,Yang Wei,Zhang Shuichang,Zhang Qi,et al.New research progress of natural gas geological theories in China during the 12th Five-Year Plan period[J].Natural Gas Industry,2017,37(8):1-13.
[4]李剑,王晓波,魏国齐,杨威,谢增业,李志生,等.天然气基础地质理论研究新进展与勘探领域[J].天然气工业,2018,38(4):37-45.Li Jian,Wang Xiaobo,Wei Guoqi,Yang Wei,Xie Zengye,Li Zhisheng,et al.New progress in basic natural gas geological theories and future exploration targets in China[J].Natural Gas Industry,2018,38(4):37-45.
[5]宋振响,陆建林,周卓明,王保华,杨昊.常规油气资源评价方法研究进展与发展方向[J].中国石油勘探,2017,22(3):21-31.Song Zhenxiang,Lu Jianlin,Zhou Zhuoming,Wang Baohua&Yang Hao.Research progress and future development of assessment methods for conventional hydrocarbon resources[J].China Petroleum Exploration,2017,22(3):21-31.
[6]朱兆群,林承焰,张苏杰,任丽华,赵剑轩,陈仕臻,等.改进的模糊-灰色综合评判方法在储层定量评价中的应用——以苏里格气田苏X井区盒8下亚段低渗透气藏为例[J].石油与天然气地质,2017,38(1):197-208.Zhu Zhaoqun,Lin Chengyan,Zhang Sujie,Ren Lihua,Zhao Jianxuan,Chen Shizhen,et al.Application of improved fuzzy-grey comprehensive evaluation method to quantitative reservoir evaluation:A case study of the low-permeability gas reservoirs of the lower part of 8th member of the Shihezi Formation in Su X block of Sulige Gasfield[J].Oil&Gas Geology,2017,38(1):197-208.
[7]戴金星,倪云燕,吴小奇.中国致密砂岩气及在勘探开发上的重要意义[J].石油勘探与开发,2012,39(3):257-264.Dai Jinxing,Ni Yunyan&Wu Xiaoqi.Tight gas in China and its significance in exploration and exploitation[J].Petroleum Exploration and Development,2012,39(3):257-264.
[8]赵永刚,常文会,冉利民.大牛地气田低孔低渗碎屑岩储层测井评价[M].北京:中国地质大学出版社,2010.Zhao Yonggang,Chang Wenhui&Ran Limin.Logging evaluation of low-porous low-permeability clastic rock reservoirs in Daniudi gas field[M].Beijing:China University of Geosciences Press,2010.
[9]康毅力,罗平亚.中国致密砂岩气藏勘探开发关键工程技术现状与展望[J].石油勘探与开发,2007,34(2):239-245.Kang Yili&Luo Pingya.Current status and prospect of key techniques for exploration and production of tight sandstone gas reservoirs in China[J].Petroleum Exploration and Development,2007,34(2):239-245.
[10]张福明,查明,邵才瑞,印兴耀.天然气的测井勘探与评价技术[J].地球物理学进展,2007,22(1):179-185.Zhang Fuming,Zha Ming,Shao Cairui&Yin Xingyao.Technology of natural gas exploration and evaluation based on well-logging data[J].Progress in Geophysics,2007,22(1):179-185.
[11]中国石油勘探与生产分公司.低孔低渗油气藏测井评价技术及应用[M].北京:石油工业出版,2009.PetroChina Exploration&Production Company.Evaluation technology and application of well logging in low-porosity and low-permeability oil and gas reservoirs[M].Beijing:Petroleum Industry Press,2009.
[12]欧阳健,毛志强,修立军,石玉江,李长喜.测井低对比度油层成因机理与评价方法[M].北京:石油工业出版,2009.Ouyang Jian,Mao Zhiqiang,Xiu Lijun,Shi Yujiang&Li Changxi.Mechanism and evaluation method of Low-resistivity logging pays of oil reservoir[M].Beijing:Petroleum Industry Press,2009.
[13]杨双定.鄂尔多斯盆地致密砂岩气层测井评价新技术[J].天然气工业,2005,25(9):45-47.Yang Shuangding.New methods of log evaluation of the tight sandstone gas reservoirs in E'erduosi Basin[J].Natural Gas Industry,2005,25(9):45-47.
[14]董瑞霞,范晓敏.致密砂岩气层综合识别方法的改进[J].世界地质,2003,22(2):89-94.Dong Ruixia&Fan Xiaomin.Improvement of method for distinguishing formation containing gas from compact sandstone[J].World Geology,2003,22(2):89-94.
[15]赵良孝,邢会民.天然气储层评价的新参数——充盈度[J].天然气工业,2010,30(6):31-34.Zhao Liangxiao&Xing Huimin.A new parameter for gas reservoir appraisal:Suffusive degree[J].Natural Gas Industry,2010,30(6):31-34.
[16]秦积顺,李爱芬.油层物理学[M].东营:中国石油大学出版社,2006.Qin Jishun&Li Aifen.Oil reservoir physics[M].Dongying:China University of Petroleum Press,2006.
[17]林伟川,冯春珍,赵惠,赵静.低孔隙度低渗透率储层孔隙压力流体评价方法[J].测井技术,2006,30(4):334-337.Lin Weichuan,Feng Chunzhen,Zhao Hui&Zhao Jing.A technique of pore hydro-pressure identification for low permeability and low porosity reservoirs[J].Well Logging Technology,2006,30(4):334-337.
[18]杨振平,吴波,王勇.Eaton法预测M油田地层孔隙压力[J].石油天然气学报,2012,34(9):181-182.Yang Zhenping,Wu Bo&Wang Yong.Application of Eaton method in predicting the formation pore pressure of M oilfield[J].Journal of Oil and Gas Technology,2012,34(9):181-182.
[19]童凯军,周文,单钰铭.致密砂岩气藏地层孔隙压力预测方法[J].科技导报,2010,28(15):62-66.Tong Kaijun,Zhou Wen&Shan Yuming.Prediction of formation porosity pressure in deep formation[J].Science&Technology Review,2010,28(15):62-66.
[20]彭海龙,刘兵,赫建伟,李文拓,吴云鹏.深水盆地高温高压环境下的地层压力预测方法[J].天然气工业,2018,38(3):24-30.Peng Hailong,Liu Bing,He Jianwei,Li Wentuo&Wu Yunpeng.A formation pressure prediction method for deepwater basins under high temperatures and high pressures[J].Natural Gas Industry,2018,38(3):24-30.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |