在平顶山盐岩矿区三维地震解释、资料井及老井钻探成果基础上,对研究区断裂发育、构造形态及盐岩地层横纵向展布特征进行精细研究,并对盖层和夹层分别取心开展室内实验以评价盖层及夹层密封性。通过对平顶山地区盐岩建库地质条件的综合评价,认为该地区适合建设盐穴地下储气库。结果表明:平顶山盐矿总体构造形态简单,盐岩沉积中心断裂不发育且盐层厚度较大;盐岩地层厚度大,横向分布稳定,其中14~20 盐群厚度平均200 m 以上,含矿率高,夹层数量少,可以作为建库的目的层位;盖层及夹层以泥岩为主,微观孔喉结构小,连通性差,渗透性能差,不利于气体的运移,具备一定的封闭能力,满足储气库地质评价要求。
In this paper, research is taken on the characteristics of fault, structure and salt layer distribution both on horizontal and vertical surfaces in Pingdingshan area, based on previous achievement such as three-dimensional seismic interpretation, drilling well and old well data. The sealing ability of the cap and the mezzanine is assessed by indoor experiment. Through the above comprehensive evaluation on geological condition, the underground gas storage construction is considered feasible. The study shows the followings. Firstly, the overall structure of the study field salt ore is simple with a small amount of faults and a large thickness of salt layer in the center of deposition. Secondly, the salt is thick and the lateral distribution is stable, where the average thickness of 14 to 20 salt groups is more than 200 meters. What's more, the salt ore content is high and the mezzanine number is little. Therefore, the object layer can be chosen to be there for database building. Thirdly, the sealing ability is also good enough to establish the gas storage, as the lithology of cap and mezzanine is mainly mudstone, with small microscopic pore throat in size, poor connectivity and permeability and bad transportation ability of gas.
[1] Barron T F. Regulatory, technical pressures prompt more US salt-cavern gas storage[J]. Petroleum Society of CIM, 1995(2): 169-171.
[2] 井文君, 杨春和, 李银平, 等. 基于层次分析法的盐穴储气库选址评价方法研究[J]. 岩土力学, 2012, 33(9): 2683-2690. Jin Wenjun, Yang Chunhe, Li Yinping. Researchon site selection evalu-ation method of saltcavern gas storage with analytic hierarchy process [J]. Rock and Soil Mechanics, 2012, 33(9): 2683-2690.
[3] 郑雅丽, 赵艳杰. 盐穴储气库国内外发展概况[J]. 油气储运, 2010, 29 (9): 652-655. Zheng Yali, Zhao Yanjie. General situation of salt cavern gas storage worldwide[J]. Oil & Gas Stroage and Transportation, 2010, 29(9): 652-655.
[4] 丁国生. 中国地下储气库的需求与挑战[J]. 天然气工业, 2011, 31 (12): 90-93. Ding Guosheng. Demand and challenges for underground gas storages in China[J]. Natural Gas Industry. 2011, 31(12): 90-93.
[5] 吴文, 侯正猛, 杨春和. 盐岩中能源(石油和天然气)地下储存库稳定性评价标准研究[J]. 岩石力学与工程学报, 2005, 24(14): 2497-2505. Wu Wen, Hou Zhengmeng, Yang Chunhe. Investigation on evaluating criteria of stabilities forenergy(petroleum and natural gas) storage cav-erns inrock salt[J]. Chinese Journal of Rock Mechanics and Engineer-ing, 2005, 24(14): 2497-2505.
[6] 完颜祺琪, 冉莉娜, 韩冰洁, 等. 盐穴地下储气库库址地质评价与建库区优选[J]. 西南石油大学学报: 自然科学版, 2015, 37(1): 57-64. Wanyan Qiqi, Ran Lina, Han Bingjie, et al. Study on site selection and valuation of underground gas storage in salt cavern[J]. Journal of South-west Petroleum University: Science & Technology Edition, 2015, 37(1): 57-64.
[7] 李建中. 利用岩盐层建设盐穴地下储气库[J]. 天然气工业, 2004, 24 (9): 119-121. Li Jianzhong. Using salt beds to build underground gas storages with salt caves[J]. Natural Gas Industry. 2004, 24(9): 119-121.
[8] 刘凯, 宋茜茜, 蒋海斌. 盐穴储气库建设的影响因素分析[J]. 中国井矿盐, 2013, 44(6) : 24-26. Liu Kai, Song Qianqian, Jiang Haibin. Analysis in factors influencing the construction of Salt cavern gas storage[J], China Well and Rock Salt, 2013, 44(6) : 24-26.
[9] Iain K, Cross K G. Gas storage canverns in East Yorkshire Zechste in Salt: Some geological and engineering aspects of site selection[C]. SPE Annual Technical Conference and Exhibition, Washington DC, October 4-7, 1992.
[10] 袁光杰, 田中蓝, 袁进平. 盐穴储气库密封性能影响因素[J]. 天然气工业, 2008, 28(4): 1-3. Yuan Guangjie, Tian Zhonglan, Yuan Jingping. Salt cavern gas storage sealed performance influencing factors[J]. Natural Gas Industry, 2008, 28(4): 1-3.
[11] Berest P, Brouard B, Durup G. Tightness tests in salt cavern wells[J]. Oil & Gas Science and Technology, 2001, 56(5): 451-469.
[12] 丁国生, 冉莉娜, 董颖. 西气东输二线平顶山盐穴储气库建设可行性 [J]. 油气储运, 2010, 29(4): 255-258. Ding Guosheng, Ran Lina, Dong Ying. Feasibility of pingdingshan salt cavern gas storage for the 2nd westeast gas pipeline[J], Oil & Gas Stro-age and Transportation, 2010, 29(4): 255-258.
[13] 姚亚明, 赵红格, 杨斌谊, 等. 周口拗陷油气地质特征[J]. 西北大学学报: 自然科学版, 2004, 34(3): 331-336. Yao Yaming, Zhao Hongge, Yang Bingyi. Characteristics of petroleum geology of Zhoukou Depression[J]. Journal of Northwest University: Natural Science Edition, 2004, 34(3): 331-336.
[14] 白桦, 杨明慧, 曾鹏, 等. 周口坳陷叶鲁断裂带构造特征及其演化[J]. 现代地质, 2010, 24(6): 1035-1041. BaiHua, Yang Minghui, Zeng Peng. Structural features and evolution of yelu fault belt in Zhoukou depression, southern north China[J]. Geo-science, 2010, 24(6): 1035-1041.
[15] 解东宁. 南华北盆地古生代依赖构造沉积演化与天然气形成条件研究[D]. 西安: 西北大学, 2007. Xie Dongning. Tectono-sedimentary evolution since the late paleozoic and natural gas formation in the southern north-China basin[D]. Xi'an: Northwest University, 2007.
[16] 孔敏, 石万忠, 宋志峰, 等. 舞阳凹陷盐岩沉积与构造的响应关系[J]. 沉积学报, 2010, 28(2): 299-306. Kong Min, Shi Wanzhong, Song Zhifeng, et al. The response relation between salt sediment and tectoni cactivity in wuyang depression[J]. Acat Sedimentologica Sinic, 2010, 28(2): 299-306.
