新疆石油地质

›› 2017, Vol. 38 ›› Issue (2): 1-1.doi: 10.7657/XJPG20170214

• 论文 •    

广安气田须六段致密砂岩气藏复杂气水关系控制因素

李勇1a，陈世加1，吴柄燕1a，邱迪1a，林若鹏1a，李俊良2   

  1. (1.西南石油大学 a.地球科学与技术学院;b.天然气地质四川省重点实验室,成都 610500;2.川中油气矿区研究所,四川 遂宁 629001)
  • 出版日期:2019-01-01 发布日期:1905-07-14

Controlling Factors on Complex Gas-Water Distribution in Xu-6 Tight Sandstone Gas Reservoir in GuangAn Area

LI Yong1a, CHEN Shijia1a,1b, WU Bingyan1a, QIU Di1a, LIN Ruopeng1a, LI Junliang2   

  1. (1.Southwest Petroleum Universitya.School of Geosciences and Technology, b.Sichuan Key Laboratory of Natural Gas Geology, Chengdu, Sichuan 610500, China; 2.Chuanzhong Oil and Gas Company, Southwest Oil and Gas Field Company, Petrochina, Suining, Sichuan 629001, China)
  • Online:2019-01-01 Published:1905-07-14

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摘要： 为明确致密砂岩气藏复杂气水关系控制因素，以四川盆地广安气田须六段气藏为例，通过测井、连井剖面以及压汞物性等资料，综合研究烃源岩分布特征、储集层物性以及构造幅度对气藏气水关系的控制作用。研究结果表明：烃源岩与薄层砂岩间互式分布，供烃能力分散，是须家河组含气层段多、气水关系复杂的根本原因；在相同供烃条件下，天然气优先运移至相对优质的储集层中成藏，造成不同区块气水分异不一的格局；构造幅度也影响致密砂岩气藏的气水分异程度，构造幅度越高，气水分异越充分。因此，致密砂岩气藏气水关系主要受烃源岩分布、储集层物性差异和构造幅度等因素综合控制。

Abstract: To identify the controlling factors on complex gas-water distributions in tight sandstone gas reservoirs, taking Xu-6 gas reservoir of Guang’an gas field in Sichuan basin as an example, and based on the data of logging, connecting-well section, seismic section and mercury injection, the paper studies the controls of source rock distribution, reservoir physical properties and structural amplitude on gas-water distributions in gas reservoirs comprehensively. The results show that the source rocks interbedded with thin sandstones supply hydrocarbons sporadically, which is the root cause of multi-gas intervals and complex gas-water distributions in Xujiahe formation; with the same hydrocarbon supply conditions, natural gas will first migrate to and accumulate in good quality reservoirs, which results in varied differentiation of gas and water in different blocks; structural amplitude has impacts on gas and water differentiation degrees in tight sandstone gas reservoirs, and the higher the structural amplitude is, the more sufficient the gas and water differentiation will be. Therefore, the gas-water distributions in tight sandstone gas reservoirs are mainly controlled by hydrocarbon source rock distribution, reservoir physical properties and structural amplitude and so on

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