岩性油气藏 ›› 2016, Vol. 28 ›› Issue (4): 8894.doi: 10.3969/j.issn.1673-8926.2016.04.012
袁淋1,李晓平2,刘建军3
Yuan Lin 1,Li Xiaoping 2,Liu Jianjun 3
摘要:
水平井辅以压裂措施开发低渗透气藏已成为全球范围内的趋势,但是气井产水严重地制约了其产能。基于储层和裂缝中气水两相渗流理论,考虑储层应力敏感、气体滑脱效应以及裂缝中气体高速非达西渗流,定义气水两相广义拟压力,利用势的叠加原理,建立了低渗透气藏中气水同产压裂水平井产能新模型。实例应用表明,理论流入动态曲线与实际产能测试数据拟合较好,且计算无阻流量与产能测试结果相对误差较小,仅为5.4%,说明新模型具有较高的准确性。敏感性分析表明,随着裂缝条数、裂缝半长的逐渐增大以及裂缝导流能力的逐渐增强,无阻流量也逐渐增大,但是增大的趋势均越来越平缓;随着水气体积比的逐渐增大,无阻流量明显减小。该项研究可为低渗透气藏气水同产压裂水平井产能预测以及压裂优化设计提供一定的借鉴。
[1] 孙恩慧,李晓平,王伟东.低渗透气藏气水两相流井产能分析方法研究[J].岩性油气藏,2012,24(6):121-124.Sun Enhui,Li Xiaoping,Wang Weidong. Productivity analysis me?thod of water and gas two?phase flow well in low permeability gas reservoirs[J]. Lithologic Reservoirs,2012,24(6):121-124.[2] 侯加根,唐颖,刘钰铭,等.鄂尔多斯盆地苏里格气田东区致密储层分布模式[J].岩性油气藏,2014,26(3):1-6. Hou Jiagen,Tang Ying,Liu Yuming,et al. Distribution patterns of tight reservoirs in eastern Sulige Gas Field,Ordos Basin[J]. Litho?logic Reservoirs,2014,26(3):1-6.[3] 高树生,侯吉瑞,杨洪志,等.川中地区须家河组低渗透砂岩气藏产水机理[J].天然气工业,2012,32(11):40-42.Gao Shusheng,Hou Jirui,Yang Hongzhi,et al. Water production mechanism of Xujiahe low?permeability sandstone gas reservoirs in Middle Sichuan Basin [J]. Natural Gas Industry,2012,32(11):40-42.[4] 余淑明,刘艳侠,武力超,等.低渗透气藏水平井开发技术难点及攻关建议——以鄂尔多斯盆地为例[J].天然气工业,2013, 33(1):54-60.Yu Shuming,Liu Yanxia,Wu Lichao,et al. Technical difficulties and proposed countermeasures in drilling horizontal wells in low?permeability reservoirs:A case study from the Ordos Basin[J]. Na?tural Gas Industry,2013,33(1):54-60.[5] 蒋海,杨兆中,李允,等.深层低渗透气藏压裂改造难点与对策[J].石油天然气学报(江汉石油学院学报),2008,30(2):140-142.Jiang Hai,Yang Zhaozhong,Li Yun,et al. Difficulties of fracturing reconstruction in deep and low permeability gas reservoir and its counter?measures[J]. Journal of Oil and Gas Technology(Journal of Jianghan Petroleum Institute),2008,30(2):140-142.[6] 宁正福,韩树刚,程林松,等.低渗透油气藏压裂水平井产能计算方法[J].石油学报,2002,23(2):68-71.Ning Zhengfu,Han Shugang,Cheng Linsong,et al. Productivity calculation method of fractured horizontal wells in low permeability oil or gas field[J]. Acta Petrolei Sinica,2002,23(2):68-71.[7] 张建军,吴晓东,孙天礼.低渗透气藏纵向缝压裂水平气井稳态产能计算方法[J].天然气工业,2008,28(4):96-98.Zhang Jianjun,Wu Xiaodong,Sun Tianli. Productivity calculation method of a longitudinally fractured horizontal well in low?permea?bility gas reservoirs[J]. Natural Gas Industry,2008,28(4):96-98. [8] 梁倚维,吴付洋,袁柯,等.低渗气藏压裂水平井产能评价新方法[J].油气井测试,2011,20(5):21-23.Liang Yiwei,Wu Fuyang,Yuan Ke,et al. A new productivity eva?luation method of fractured horizontal wells in low permeability gas reservoir[J]. Well Test,2011,20(5):21-23. [9] 袁淋,李晓平,张璐,等.水平井稳态产能公式对比与分析[J]. 岩性油气藏,2013,25(6):127-132. Yuan Lin,Li Xiaoping,Zhang Lu,et al. The analysis and correla?tion of horizontal wells’ steady productivity formulas[J]. Litholo?gic Reservoirs,2013,25(6): 127-132.[10] 陈志海,马新仿,郎兆新.气藏水平井产能预测方法[J].天然气工业,2006,26(2):98-99.Chen Zhihai,Ma Xinfang,Lang Zhaoxin. Deliverability prediction of horizontal gas well[J]. Natural Gas Industry,2006,26(2):98-99.[11] Klinkenberg L J. The permeability of porous media to Liquids and gases[C]. Drilling and Production Practice Conference,Washington,D C:American Petroleum Institute,1941.[12] Farquhar R A,Smart B G D,Todd A C. Stress sensitivity of low?permeability sandstones from the rotliegendes sandstone[R]. SPE 26501,1993.[13] 陈元千.确定天然气物性的相关经验公式[J].新疆石油地质,1989,10(2):48-55.Chen Yuanqian. Empirical formulas to determine the petrophysical property of natural gas[J]. Xinjiang Petroleum Geology,1989,10(2):48-55. |
No related articles found! |
|