保存条件对四川盆地及周缘海相页岩气富集高产的影响机制

魏祥峰; 李宇平; 魏志红; 刘若冰; 余光春; 王庆波

doi:10.11781/sysydz201702147

保存条件对四川盆地及周缘海相页岩气富集高产的影响机制

doi: 10.11781/sysydz201702147

中国石化勘探分公司, 成都 610041

基金项目: 中国石化科技部基础研究项目（P15074）和中国地质调查局地质调查项目（12120115003901）资助。

详细信息

作者简介:
魏祥峰(1984-),男,博士,高级工程师,从事沉积学、非常规油气地质研究。E-mail:weixiangfeng1984@163.com。

中图分类号: TE132.2
计量
- 文章访问数: 1481
- HTML全文浏览量: 167
- PDF下载量: 683
- 被引次数: 0
出版历程
- 收稿日期: 2016-09-30
- 修回日期: 2017-02-15
- 刊出日期: 2017-03-28

Effects of preservation conditions on enrichment and high yield of shale gas in Sichuan Basin and its periphery

SINOPEC Exploration Company, Chengdu, Sichuan 610041, China

摘要

摘要: 以四川盆地及周缘牛蹄塘组和五峰组-龙马溪组2套页岩层为研究对象，通过对不同地区、不同含气性和产量的典型页岩气井进行解剖，探讨了影响页岩气保存条件的主控因素及评价体系。研究认为：顶底板条件、页岩自身封盖作用是该区页岩气早期滞留于页岩内的关键因素，后期构造改造强度与所持续的时间对页岩气藏的含气丰度具有明显的调整作用；保存条件对页岩气层的含气量、孔隙度、含水饱和度、电阻率以及页岩气气体组分等有明显的影响，保存条件差，页岩气层含气量、孔隙度、电阻率通常较低，含水饱和度、N₂含量则较高，这些被影响的参数可以作为评价页岩气保存条件优劣的间接指标。建立了四川盆地及周缘复杂构造区下古生界海相页岩气5大类、28项参数的保存条件综合评价指标体系，即主要是封盖条件、页岩气层自身封堵性、构造作用（构造改造时间、断裂作用、地层变形强度等）等条件在时间和空间上的组合关系，另外页岩气层含气性表征参数和压力系数同样可在一定程度上指示保存条件的优劣。
- 保存条件 /
- 含气性表征参数 /
- 页岩气 /
- 牛蹄塘组 /
- 五峰-龙马溪组 /
- 四川盆地及周缘
Abstract: The main controlling factors of shale gas preservation conditions and evaluation of the Niutitang and Wufeng-Longmaxi formations in the Sichuan Basin and its periphery, were considered in view of typical shale gas wells in different regions with different gas contents and production. The preservation conditions of shale gas were controlled by several factors such as the roof and bottom rocks, the sealing properties of shale itself, the structural reformation degree, and the timing of when the shale reservoirs were reformed, etc. Adjacent rock conditions and its sealing effect was the basic factor determining whether the early formed hydrocarbons were preserved. Late tectonic activity controlled the effusion, degree and abundance of shale gas, and it was a key factor in shale gas preservation. Meanwhile, we found that preservation conditions had an obvious effect on gas content, porosity, electrical resistivity, water saturation and gas composition. With poor preservation conditions, the gas content, porosity and resistivity were low, but water saturation and N₂ content were high. All these parameters could be used as indirect indexes of shale gas preservation evaluation. A preservation evaluation system with 5 types and 28 parameters for the Lower Paleozoic marine shale gas was set up, illustrating the time and space combination of sealing conditions, the sealing properties of shale itself, and tectonic effects (structural reformation time and degree, fault). The parameters of gas-bearing capacity of shale layer and the pressure coefficients also guide the evaluation of preservation conditions.
- preservation condition /
- characterization parameters of gas bearing capacity /
- shale gas /
- Niutitang Formation /
- Fufeng-Longmaxi formations /
- Sichuan Basin and its periphery

HTML全文

参考文献(22)

[1]	张金川,聂海宽,徐波,等. 四川盆地页岩气成藏地质条件[J]. 天然气工业,2008,28(2):151-156. Zhang Jinchuan,Nie Haikuan,Xu Bo,et al. Geological condition of shale gas accumulation in Sichuan Basin[J]. Natural Gas Industry,2008,28(2):151-156.
[2]	郭少斌,黄磊. 页岩气储层含气性影响因素及储层评价:以上扬子古生界页岩气储层为例[J]. 石油实验地质,2013,35(6):601-606. Gun Shaobin,Huang Lei. Gas-bearing influential factors and evaluation of shale gas reservoir:A case study of Paleozoic shale gas reservoir in Upper Yangtze region[J]. Petroleum Geology & Experiment,2013,35(6):601-606.
[3]	燕继红,李启桂,朱祥,等. 四川盆地及周缘下寒武统页岩气成藏主控因素与勘探方向[J]. 石油实验地质,2016,38(4):445-452. Yan Jihong,Li Qigui,Zhu Xiang,et al. Main factors controlling shale gas accumulation and exploration targets in the Lower Cambrian,Sichuan Basin and its periphery[J]. Petroleum Geology & Experiment,2016,38(4):445-452.
[4]	高占京,郑和荣,黄韬. 美国俄克拉荷马州伍德福德页岩甜点控制因素研究[J]. 石油实验地质,2016,38(3):340-345. Gao Zhanjing,Zheng Herong,Huang Tao. Attributes of sweet spots in the Devonian Woodford shales in Oklahoma,USA[J]. Petroleum Geology & Experiment,2016,38(3):340-345.
[5]	刘光祥,金之钧,邓模,等. 川东地区上二叠统龙潭组页岩气勘探潜力[J]. 石油与天然气地质,2015,36(3):481-487. Liu Guangxiang,Jin Zhijun,Deng Mo,et al. Exploration potential for shale gas in the Upper Permian Longtan Formation in eastern Sichuan Basin[J]. Oil & Gas Geology,2015,36(3):481-487.
[6]	郭少斌,付娟娟,高丹,等. 中国海陆交互相页岩气研究现状与展望[J]. 石油实验地质,2015,37(5):535-540. Guo Shaobin,Fu Juanjuan,Gao Dan,et al. Research status and prospects for marine-continental shale gases in China[J]. Petro-leum Geology & Experiment,2015,37(5):535-540.
[7]	郭旭升. 南方海相页岩气"二元富集"规律:四川盆地及周缘龙马溪组页岩气勘探实践认识[J]. 地质学报,2014,88(7):1209-1218. Guo Xusheng. Rules of two-factor enrichiment for marine shale gas in southern China:Understanding from the Longmaxi Formation shale gas in Sichuan Basin and its surrounding area[J]. Acta Geologica Sinica,2014,88(7):1209-1218.
[8]	郭彤楼,张汉荣. 四川盆地焦石坝页岩气田形成与富集高产模式[J]. 石油勘探与开发,2014,41(1):28-36. Guo Tonglou,Zhang Hanrong. Formation and enrichment mode of Jiaoshiba shale gas field,Sichuan Basin[J]. Petroleum Exploration and Development,2014,41(1):28-36.
[9]	郭旭升. 涪陵页岩气田焦石坝区块富集机理与勘探技术[M]. 北京:科学出版社,2014. Guo Xusheng. Enrichment mechanism and exploration technology of Jiaoshiba area in Fuling shale gas field[M]. Beijing:Science Press,2014.
[10]	郭旭升,胡东风,魏志红,等. 涪陵页岩气田的发现与勘探认识[J]. 中国石油勘探,2016,21(3):24-37. Guo Xusheng,Hu Dongfeng,Wei Zhihong,et al. Discovery and exploration of Fuling shale gas field[J]. China Petroleum Exploration,2016,21(3):24-37.
[11]	胡东风,张汉荣,倪楷,等. 四川盆地东南缘海相页岩气保存条件及其主控因素[J]. 天然气工业,2014,34(6):17-23. Hu Dongfeng,Zhang Hanrong,Ni Kai,et al. Main controlling factors for gas preservation conditions of marine shales in southeastern margins of the Sichuan Basin[J]. Natural Gas Industry,2014,34(6):17-23.
[12]	魏志红. 四川盆地及其周缘五峰组-龙马溪组页岩气的晚期逸散[J]. 石油与天然气地质,2015,36(4):659-665. Wei Zhihong. Late fugitive emission of shale gas from Wufeng-Longmaxi Formation in Sichuan Basin and its periphery[J]. Oil & Gas Geology,2015,36(4):659-665.
[13]	王濡岳,丁文龙,龚大建,等. 黔北地区海相页岩气保存条件:以贵州岑巩区块下寒武统牛蹄塘组为例[J]. 石油与天然气地质,2016,37(1):45-55. Wang Ruyue,Ding Wenlong,Gong Dajian,et al. Gas preservation conditions of marine shale in northern Guizhou area:A case study of the Lower Cambrian Niutitang Formation in the Cen'gong block,Guizhou Province[J]. Oil & Gas Geology,2016,37(1):45-55.
[14]	刘树根,邓宾,钟勇,等. 四川盆地及周缘下古生界页岩气深埋藏-强改造独特地质作用[J]. 地学前缘,2016,23(1):11-28. Liu Shugen,Deng Bin,Zhong Yong,et al. Unique geological features of burial and superimposition of the Lower Paleozoic shale gas across the Sichuan Basin and its periphery[J]. Earth Science Frontiers,2016,23(1):11-28.
[15]	吕延防,张绍臣,王亚明. 盖层封闭能力与盖层厚度的定量关系[J]. 石油学报,2000,21(2):27-30. Lü Yanfang,Zhang Shaochen,WangYaming. Research of quantitative relations between sealing ability and thickness of cap rock[J]. Acta Petrolei Sinica,2000,21(2):27-30.
[16]	李双建,肖开华,汪新伟,等. 南方志留系碎屑矿物热年代学分析及其地质意义[J]. 地质学报,2008,82(8):1068-1076. Li Shuangjian,Xiao Kaihua,Wang Xinwei,et al. Thermochronology of detrital minerals in the Silurian strata from Southern China and its geological implications[J]. Acta Geologica Sinica,2008,82(8):1068-1076.
[17]	梅廉夫,刘昭茜,汤济广,等. 湘鄂西-川东中生代陆内递进扩展变形:来自裂变径迹和平衡剖面的证据[J]. 地球科学(中国地质大学学报),2010,35(2):161-174. Mei Lianfu,Liu Zhaoxi,Tang Jiguang,et al. Mesozoic intra-continental progressive deformation in western Hunan-Hubei-eastern Sichuan provinces of China:Evidence from apatite fission track and balanced cross-section[J]. Earth Science(Journal of China University of Geosciences),2010,35(2):161-174.
[18]	Passey Q R,Bohacs K,Esch W L,et al. From oil-prone source rock to gas-producing shale reservoir:Geologic and petrophysical characterization of unconventional shale gas reservoirs//International Oil and Gas Conference and Exhibition in China,8-10 June,Beijing,China. Beijing:Society of Petroleum Engineers,2010.
[19]	李明诚,李伟,蔡峰,等. 油气成藏保存条件的综合研究[J]. 石油学报,1997,18(2):41-48. Li Mingcheng,Li Wei,Cai Feng,et al. Integrative study of pre-servation conditions of oil and gas pools[J]. Acta Petrolei Sinica,1997,18(2):41-48.
[20]	楼章华,李梅,金爱民,等. 中国海相地层水文地质地球化学与油气保存条件研究[J]. 地质学报,2008,82(3):387-396. Lou Zhanghua,Li Mei,Jin Aimin,et al. Hydrogeological and hydrogeochemical characteristics and hydrocarbon preservation conditions for marine strata in China[J]. Acta Geologica Sinica,2008,82(3):387-396.
[21]	马永生,楼章华,郭彤楼,等. 中国南方海相地层油气保存条件综合评价技术体系探讨[J]. 地质学报,2006,80(3):406-417. Ma Yongsheng,Lou Zhanghua,Guo Tonglou,et al. An exploration on a technological system of petroleum preservation evaluation for marine strata in South China[J]. Acta Geologica Sinica,2006,80(3):406-417.
[22]	马力,陈焕疆,甘克文,等. 中国南方大地构造和海相油气地质(上)[M]. 北京:地质出版社,2004. Ma Li,Chen Huanjiang,Gan Kewen,et al. Tectonic and marine petroleum geology of the South China (the first volume)[M]. Beijing:Geological Publishing House,2004.