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天然气地球科学

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考虑水锁损害的致密砂岩气藏产能分析

杨旭，孟英峰，李皋，曾辉   

  1. 油气藏地质及开发工程国家重点实验室，西南石油大学，四川 成都 610500
  • 收稿日期:2016-01-03 修回日期:2017-03-14 出版日期:2017-05-10 发布日期:2017-05-10
  • 作者简介:杨旭(1988-)，男，四川武胜人，博士研究生，主要从事储层保护和井壁稳定方面的研究. E-mail：yangxuzq@sina.com.
  • 基金资助:

    国家科技重大专项（编号：2016ZX05021-004）；国家自然科学基金项目（编号：51674217）联合资助.

Productivity analysis of tight sandstone gas reservoirs considering water blocking damage

Yang Xu，Meng Ying-feng，Li Gao，Zeng Hui   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China
  • Received:2016-01-03 Revised:2017-03-14 Online:2017-05-10 Published:2017-05-10

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摘要：

致密砂岩气藏在钻井、完井和储层改造过程中容易受到水锁损害，影响气井产能。基于对流扩散模型，分析了液相侵入深度随时间的变化。基于Forchheimer渗流方程，建立了考虑水锁损害的致密砂岩气藏直井二项式稳态产能模型。分析了紊流效应、启动压力梯度、渗透率应力敏感和水锁损害范围及其程度对气井产能的影响。结果表明水锁损害造成液相侵入区气相渗透率减小，导致井周压降梯度和启动压力梯度显著增加。水锁损害造成的产气量降低远大于非达西效应、启动压力和应力敏感的影响。液相侵入初期造成的气井产量降低最为明显，随液相侵入深度的增加，产气量先急剧降低，然后趋于平缓。水锁损害范围和损害程度越大，气井产量降低越多。

关键词: 致密砂岩, 液相侵入, 水锁损害, 启动压力, 产能

Abstract:

Tight gas reservoirs can be subject to water blocking damage due to liquid invasion during well drilling,completion,and stimulation processes.Water blocking is one of the major reasons of low production in tight sandstone reservoirs.Variation of liquid invasion depth was calculated based on the Darcy equation and convection-dispersion model.The productivity formula for the vertical wells considering water blocking damage was developed on the basis of the Forchheimer binomial equation.The influences of inertia effect,starting pressure gradient,stress sensitivity,water blocking damage degree and damage range on gas well productivity were studied.The results indicate that water blocking damage decreases the relative permeability of gas in the liquid invasion zone.It also leads to additional pressure drop and starting pressure gradient in the near wellbore region.The effect of water blocking damage on gas production is more serious than that of inertia turbulent effect,starting pressure gradient and stress sensitivity.Water blocking damage causes large reduction in gas well productivity,and the effect of liquid invasion on gas production is more obvious in the initial period of liquid invasion.With the increases in liquid invasion depth,gas production presents an initial rapid decrease,followed by a slow and steady decrease.The production of tight gas wells decreases with the increase of water blocking damage range and degree.

Key words: Tight sandstone, Liquid invasion, Water blocking damage, Threshold pressure gradient, Productivity

中图分类号: 

  • TE312

[1]Li Gao,Meng Yingfeng,Tang Hongming,et al.Laboratory study on backwash imbibition generated during WEB underbalanced drilling in sandstone gas reservoirs[J].Natural Gas Industry,2007,27(1):75-77.[李皋,孟英峰,唐洪明,等.砂岩气藏水基欠平衡钻井逆流自吸效应实验研究[J].天然气工业,2007,27(1):75-77.][ZK)]
[2]Sheng Jun,Sun Wei,Duan Baohong,et al. Water lock effect mechanism of tight sandstone gas reservoir:An example of the He 8 reservoir of the Upper Paleozoic in the southeast region of Sulige Gasfield[J].Natural Gas Geoscience,2015,26(10):1972-1978.[盛军,孙卫,段宝虹,等.致密砂岩气藏水锁效应机理探析——以苏里格气田东南区上古生界盒8段储层为例[J].天然气地球科学,2015,26(10):1972-1978.]
[3]Zhang Chong,Zhang Chaomo,Zhang Zhansong,et al.Comparative experimental study of the core irreducible water saturation of tight gas reservoir[J].Natural Gas Geoscience,2016,27(2):352-358.[张冲,张超谟,张占松,等.致密气储层岩心束缚水饱和度实验对比[J].天然气地球科学,2016,27(2):352-358.]
[4]Li Gao,Ren Wenxi,Meng Yingfeng,et al.Micro-flow kinetics research on water invasion in tight sandstone reservoirs[J].Journal of Natural Gas Science and Engineering,2014,20:184-191.
[5]Bahrami H,Rezaee R,Clennell B.Water blocking damage in hydraulically fractured tight sand gas reservoirs:An example from Perth Basin,Western Australia[J].Journal of Petroleum Science and Engineering,2012,（88-89）:100-106.
[6]You Lijun,Shi Yujiang,Zhang Haitao,et al.Spontaneous removal behavior of water phase trapping damage in tight sandstone gas reservoirs[J].Natural Gas Geoscience,2013,24(6):1214-1219.[游利军,石玉江,张海涛,等.致密砂岩气藏水相圈闭损害自然解除行为研究[J].天然气地球科学,2013,24(6):1214-1219.]
[7]Kang Yili,Xu Chengyuan,You Lijun,et al.Comprehensive evaluation of formation damage induced by working fluid loss in fractured tight gas reservoir[J].Journal of Natural Gas Science and Engineering,2014,18:353-359.
[8]Xu Mengya,Ran Qiquan,Li Ning,et al.A new model of dynamic inversion for fractured wells in stress-sensitivity reservoir[J].Natural Gas Geoscience,2014,25(12):2058-2064.[徐梦雅,冉启全,李宁,等.应力敏感性致密气藏压裂井动态反演新方法[J].天然气地球科学,2014,25(12):2058-2064.]
[9]Guo Jingjing,Zhang Liehui,Liang Bin.Productivity analysis of a fractured well in low-permeability gas reservoirs considering threshold pressure gradient[J].Natural Gas Industry,2010,30(7):45-47.[郭晶晶,张烈辉,梁斌.考虑启动压力梯度的低渗透气藏压裂井产能分析[J].天然气工业,2010,30(7):45-47.]
[10]Yuan Lin,Li Xiaoping.The productivity of gas-water phase horizontal well in low-permeability gas reservoir[J].Natural Gas Geoscience,2014,25(9):1455-1461.[袁淋,李晓平.低渗透气藏水平井气水两相产能研究[J].天然气地球科学,2014,25(9):1455-1461.]
[11]Yang Xu,Meng Yingfeng,Shi Xiangchao,et al.Influence of porosity and permeability heterogeneity on liquid invasion in tight gas reservoirs[J].Journal of Natural Gas Science and Engineering,2017,37:169-177.
[12]Windarto,Gunawan A Y,Sukarno P,et al.Modelling of formation damage due to mud filtrate invasion in a radial flow system[J].Journal of Petroleum Science and Engineering,2012,100:99-105.
[13]Li Gao,Meng Yingfeng,Tang Hongming,et al.Mechanisms and Evaluation Techniques of Water Blocking Damage in Low-permeability Tight Sandstone Reservoirs[M].Chengdu:Sichuan Science and Technology Publishing House,2012:58-62.[李皋,孟英峰,唐洪明.等 低渗透致密砂岩水锁损害机理及评价技术[M].成都:四川科学技术出版社,2012:58-62.]
[14]Prada Alvaro,Civan Faruk.Modification of Darcy’s law for the threshold pressure gradient[J].Journal of Petroleum Science and Engineering,1999,22(4):237-240.
[15]Gao Shusheng,Xiong Wei,Liu Xiangui,et al.Experimental research status and several novel understandings on gas percolation mechanism in low-permeability sandstone gas reservoirs[J].Natural Gas Industry,2010,30(1):52-55.[高树生,熊伟,刘先贵,等.低渗透砂岩气藏气体渗流机理实验研究现状及新认识[J].天然气工业,2010,30(1):52-55.]
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