青海木里地区天然气水合物和煤层气联合开发可行性分析
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摘要
青海木里地区天然气水合物资源丰富,采用单一降压法开采水合物产气量较低。综合考虑该地区煤层气勘探开发潜力,提出了青海木里地区进行天然气水合物和煤层气联合开发的概念模式,并从天然气水合物和煤层气的赋存模式、开采原理、开发技术等方面分析了联合开发的可行性,以及需要解决的资源评价及选区、压裂增产、环境保护等关键问题,为实现该地区天然气水合物和煤层气的联合开发提供了参考依据。
The Muli area of Qinghai province is rich in natural gas hydrate resources, and the production of hydrate is lower by the solely using of depressurization method. By considering the exploration and development potential of coalbed methane in this area comprehensively, the conceptual model of joint development of natural gas hydrate and coalbed methane in Muli area of Qinghai was proposed, the feasibility of joint development was analyzed from the aspects of occurrence modes, recovery mechanism and development technology of natural gas hydrate and coalbed methane, and the existing key issues on resource evaluation and zone selection, fracturing stimulation, and environmental protection were analyzed as well. This paper provides reference for the joint development of natural gas hydrates and coalbed methane in this region.
The Muli area of Qinghai province is rich in natural gas hydrate resources, and the production of hydrate is lower by the solely using of depressurization method. By considering the exploration and development potential of coalbed methane in this area comprehensively, the conceptual model of joint development of natural gas hydrate and coalbed methane in Muli area of Qinghai was proposed, the feasibility of joint development was analyzed from the aspects of occurrence modes, recovery mechanism and development technology of natural gas hydrate and coalbed methane, and the existing key issues on resource evaluation and zone selection, fracturing stimulation, and environmental protection were analyzed as well. This paper provides reference for the joint development of natural gas hydrates and coalbed methane in this region.
引文
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[14] 邵龙义,文怀军,李永红,等.青海省天峻县木里煤田煤层气有利区块的多层次模糊数学评判[J].地质通报,2011,30(12):1896-1903.SHAO Longyi,WEN Huaijun,LI Yonghong,et al.Assessment of favorable areas for coalbed methane resources exploration in the Muli coalfield of Qinghai Province based on multi-layered fuzzy mathematics[J].Geological Bulletin of China,2011,30(12):1896-1903.
[15] 白玉湖,李清平.天然气水合物藏和天然气藏开采规律对比分析[J].中国海上油气,2010,22(3):172-177.BAI Yuhu,LI Qingping.A comparative analysis of production regularity between gas hydrate and gas reservoirs[J].China Offshore Oil and Gas,2010,22(3):172-177.
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[17] 白玉湖,李清平,李相方,等.下伏气的天然气水合物藏开采模拟[J].科学通报,2008,53(18):2244-2250.BAI Yuhu,LI Qingping,LI Xiangfang.et al.Numerical simulation on gas production from hydrate reservoir underlain by a free gas zone[J].Chinese Science Bulletin,2009,54(5):865-872.
[2] 谭富荣,刘世明,崔伟雄,等.木里煤田聚乎更矿区天然气水合物气源探讨[J].地质学报,2017,91(5):1158-1167.TAN Furong,LIU Shiming,CUI Weixiong,et al.Origin of gas hydrate in the Juhugeng mining area of Muli coalfield[J].Acta Geologica Sinica,2017,91(5):1158-1167.
[3] 卢振权,唐世琪,王伟超,等.青海木里三露天冻土天然气水合物气源性质研究[J].现代地质,2015,29(5):996-1002.LU Zhenquan,TANG Shiqi,WANG Weichao,et al.Study on the nature of gas source for permafrost-associated gas hydrate in sanlutian of Muli,Qinghai[J].Geoscience,2015,29(5):996-1002.
[4] 殷祥,文怀军,张文,等.木里煤田三露天天然气水合物与煤层关系探讨[J].煤炭工程,2016,48(6):119-122.YIN Xiang,WEN Huaijun,ZHANG Wen,et al.Discussion on relationship between coal bed and natural gas hydrates in Sanlutian of Muli Coalfield[J].Coal Engineering,2016,48(6):119-122.
[5] 吴闯,尹宏伟,于常青,等.青海省木里地区天然气水合物构造成藏机制:来自物理模拟实验的启示[J].天然气地球科学,2017,28(5):771-784.WU Chuang,YIN Hongwei,YU Changqing,et al.The structural accumulation mechanism of the natural gas hydrates in Muli region of Qinghai province:Revelation from physical simulation experiment[J].Natural Gas Geoscience,2017,28(5):771-784.
[6] 王超群,丁莹莹,胡道功,等.祁连山冻土区DK-9 孔温度监测及天然气水合物稳定带厚度[J].现代地质,2017,31(1):158-166.WANG Chaoqun,DING Yingying,HU Daogong,et al.Temperature monitoring results for gas hydrate borehole DK-9 and thickness of gas hydrate stability zone in the Qilian mountains permafrost[J].Geoscience,2017,31(1):158-166.
[7] 卢振权,李永红,王伟超,等.青海木里三露天冻土天然气水合物成藏模式研究[J].现代地质,2015,29(5):1015-1024.LU Zhenquan,LI Yonghong,WANG Weichao,et al.Study on the accumulation pattern for permafrost-associated gas hydrate in Sanlutian of Muli,Qinghai[J].Geoscience,2015,29(5):1015-1024.
[8] 李永红,王伟超,卢振权,等.青海木里三露天地区天然气水合物资源量初步评价[J].现代地质,2015,29(5):1252-1259.LI Yonghong,WANG Weichao,LU Zhenquan,et al.Preliminary evaluation on gas hydrate resources in Sanlutian of Muli,Qinghai[J].Geoscience,2015,29(5):1252-1259.
[9] 徐水师,王佟,刘天绩,等.青海省木里煤田天然气水合物资源量估算[J].中国煤炭地质,2001,21(9):1-3.XU Shuishi,WANG Tong,LIU Tianji,et al.Resource quantity estimation of gas hydrate in Muli coalfield,Qinghai Province[J].Coal Geology of China,2001,21(9):1-3.
[10] 曹代勇,李靖,王丹,等.青海木里煤田天然气水合物稳定带研究[J].中国矿业大学学报,2013,42(1):77-83.CAO Daiyong,LI Jing,WANG Dan,et al.Study of the gas hydrate stability zone in Muli coalfield,Qinghai province,China[J].Journal of China University of Mining & Technology,2013,42(1):77-83.
[11] 铁占元,李元奎,滕贤清,等.木里地区天然气水合物及油气勘探部署建议[J].青海石油,2014,32(2):1-7.TIE Zhanyuan,LI Yuankui,TENG Xianqing,et al.Natural gas hydrate and oil and gas exploration strategy in Muli area[J].Qinghai Petroleum,2014,32(2):1-7.
[12] 梁俭,高元宏,刘海声,等.祁连山冻土层天然气水合物水平对接孔钻孔弯曲率设计分析[J].青海大学学报,2017,35(3):40-45.LIANG Jian,GAO Yuanhong,LIU Haisheng,et al.Bending rate design analysis of level docking well of natural gas hydrate drilling in permafrost area of Qilian mountains[J].Journal of Qinghai University,2017,35(3):40-45.
[13] 郭晋宁,李猛,邵龙义.青海聚乎更矿区煤层气富集条件[J].中国煤炭地质,2011,23(6):18-22.GUO Jinning,LI Meng,SHAO Longyi.CBM enrichment conditions in Juhugeng mine area,Qinghai[J].Coal Gelogy of China,2011,23(6):18-22.
[14] 邵龙义,文怀军,李永红,等.青海省天峻县木里煤田煤层气有利区块的多层次模糊数学评判[J].地质通报,2011,30(12):1896-1903.SHAO Longyi,WEN Huaijun,LI Yonghong,et al.Assessment of favorable areas for coalbed methane resources exploration in the Muli coalfield of Qinghai Province based on multi-layered fuzzy mathematics[J].Geological Bulletin of China,2011,30(12):1896-1903.
[15] 白玉湖,李清平.天然气水合物藏和天然气藏开采规律对比分析[J].中国海上油气,2010,22(3):172-177.BAI Yuhu,LI Qingping.A comparative analysis of production regularity between gas hydrate and gas reservoirs[J].China Offshore Oil and Gas,2010,22(3):172-177.
[16] BAI Yuhu,LI Qingping,YU Xichong,et al.Numerical study on the dissociation of gas hydrate and its sensitivity to physical parameters[J].China Ocean Engineering,2007,21(4):625-636.
[17] 白玉湖,李清平,李相方,等.下伏气的天然气水合物藏开采模拟[J].科学通报,2008,53(18):2244-2250.BAI Yuhu,LI Qingping,LI Xiangfang.et al.Numerical simulation on gas production from hydrate reservoir underlain by a free gas zone[J].Chinese Science Bulletin,2009,54(5):865-872.