长岭火山岩气藏天然气资源丰富,但开发过程中气井普遍存在产水现象。准确分析气井产水规律、产水模式及其影响因素,对优化开发方案及提高开发效果具有重要意义。通过对长岭营城组气藏地质特征及产水动态特征综合分析研究,结果表明:气井产水来源主要为凝析水和边底水;利用数值模拟技术研究不同产水类型的产出机理,分析了气井产水规律并运用数值模拟技术对气井产水量进行预测,在此基础上归纳总结出4种产水模式,分别为裂缝纵向强水窜、裂缝纵向弱水窜、裂缝—孔隙纵向水锥、高含水饱和度型。明确了气井产水的影响因素,主要受构造特征、气井调峰、井间干扰及气井作业4个方面影响;最终形成相应的“整体考虑、分类治理”的气井产水开发策略。
Changling volcanic gas reservoir is rich in natural gas resources. However water production in gas wells is a common phenomenon in the development process. Accurate analysis of producing water law,water-yielding pattern and its influencing factors of gas wells have great significance in optimizing development plan and improving development effect. This paper studied the geological characteristics and comprehensively analyzes water producing dynamic characteristics of gas reservoir of Yingcheng Formation,Changling Gasfield. The result shows that the main sources of producing water in gas wells are condensate water and bottom water. Numerical simulation technology was used to study the mechanism of different types of water production output. This paper analyzed the water-yielding law of the gas wells and used numerical simulation to forecast the quantity of gas wells water production.On this basis,the paper summarized 4 kinds of water-yielding patterns,i.e.,fracture in the longitudinal strong water channeling,fracture in the longitudinal weak water channeling,fracture-pore in the longitudinal water coning,and high water saturation pattern. Moreover this paper made clear the influencing factors of gas wells water-yielding.There are four main factors,i.e.,tectonic characteristics,gas wells peaking,inter-well interference,gas wells production.Finally the paper proposed a water-yielding development strategy which is overall consideration,classification management.
[1]Wu Lei,Xu Huaimin,Ji Hancheng,et al.Controlling factors and distribution prediction of deep-buried favorable volcanic reservoir in the Xingshan area of Songliao Basin[J].Geoscience,2005,19(4):585-595.
吴磊,徐怀民,季汉成,等.松辽盆地杏山地区深部火山岩有利储层的控制因素及分布预测[J].现代地质,2005,19(4):585-595.
[2]Hunter B E,Davis D K.Distribution of volcanic sediments in the golf coastal province-significance to petroleum geology[J].Transactions,Golf Coast Association of Geological Societies,1979,29(1):147-155.
[3]Hawlander H M.Diagenesis andreservoir potential of volcanogenic sandstone-Cretaceous of the Surat Basin,Australia[J].Sedimentary Geology,1990,66(3/4):181-195.
[4]Zorin Y A.Geodynamics of the western part of the Mongolia-Okhotsk collisional belt,Trans-baikal region (Russia) and Mongolia[J].Tectonophysics,1999,306:33-56.
[5]Huang Yulong,Wang Pujun,Chen Shumin.Distribution andcharacteristics of volcanic reservoirs in China[J].Global Geology,2009,12(2):64-79.
[6]Juan F.Homvc,Luis Constantini.Hydrocarbon exploration potential within intraplate shear-related depocenters:Deseado and San Julian Basins,Southern Argentina[J].AAPG Bulletin,2001,85(10):1795-1816.
[7]Zhu Rukai,Mao Zhiguo,Guo Hongli,et al.Volcanic oil and gas reservoir geology:Thinking and forecast[J].Lithologic Reservoir,2010,22(2):7-13.
朱如凯,毛治国,郭宏莉,等.火山岩油气储层地质学——思考与建议[J].岩性油气藏,2010,22(2):7-13.
[8]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.
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.
[9]Cheng Yan.Study on Mechanism of Production Water of Gas Pool in Xiangxi Group,Central Part of Sichuan Basin[D].Chengdu:Chengdu University of Technology,2005.
成艳.川中香溪群有水气藏产水机理研究[D].成都:成都理工大学,2005.
[10]Ye Liyou,Gao Shusheng,Yang Hongzhi,et al.Water production mechanism and development strategy of tight sandstone gas reservoirs[J].Natural Gas Industry,2015,35(2):41-46.
叶礼友,高树生,杨洪志,等.致密砂岩气藏产水机理与开发对策[J].天然气工业,2015,35(2):41-46.
[11]Zhou Junjie,Li Yingchuan,Song Dongbin,et al.Water production pattern of Daniudi low-permeability gas field,Ordos Basin[J].Oil & Gas Geology,2011,32(6):946-951.
周俊杰,李颖川,宋东斌,等.鄂尔多斯盆地大牛地低渗气田产水规律[J].石油与天然气地质,2011,32(6):946-951.
[12]Wan Xiaojin.Research of the Water Invasion Law and Water Control Measures in Main Reservoir of Puguang Gas Field[D].Chongqing:Chongqing University of Science and Technology,2015.
万小进.普光气田主体气藏水侵规律及控水对策研究[D].重庆:重庆科技学院,2015.
[13]Zhang Hairong.Distribution of Gas-water and Water Production Rule in Sulige Gas-Area[D].Xi’an:Xi’an Shiyou University,2014.
张海荣.苏里格气田气水分布及产水规律研究[D].西安:西安石油大学,2014.
[14]Wang Jiping.Gas and Water Distribution Regularity in Su20 block of Sulige Gas Field[D].Xi’an:Northwest University,2014.
王继平.苏里格气田苏20区块气水分布规律研究[D].西安:西北大学,2014.
[15]Lin Haiping,Li Qianding,Nan Yefei.Study on regularities of the produced water in western Sulige Gas Field[J].Chemical Engineer,2014(10):34-38.
林海萍,李谦定,南叶飞.苏里格气田西区产水规律研究[J].化学工程师,2014(10):34-38.
[16]Li Jin,Wang Haixin,Zhu Liyao,et al.A study of comprehensive discriminant methods of the source of water-yielding in gas reservoirs[J].Natural Gas Geoscience,2012,23(6):1185-1190.
李锦,王新海,朱黎鹞,等.气藏产水来源综合判别方法研究[J].天然气地球科学,2012,23(6):1185-1190.
[17]Chen Lin,Zhang Youcai,Tang Tao,et al.Analysis and identification of producing water source in reef-bank gas reservoirs[J].Fault-Block Oil & Gas Field,2013,20(4):481-484.
陈林,张友彩,唐涛,等.礁滩气藏产水来源分析与识别[J].断块油气田,2013,20(4):481-484.
[18]Dong Jiaxin,Tong Min,Wang Bin,et al.Comprehensive analysis of produced water source in Kelameili volcanic gas field,Junggar Basin[J].Xinjiang Petroleum Geology,2013,34(2):202-204.
董家辛,童敏,王彬,等.克拉美丽火山岩气田产水来源综合分析[J].新疆石油地质,2013,34(2):202-204.
[19]Guo Ping,Huang Weigang,Jiang Yiwei,et al.Research on the irreducible and movable water of tight sandstone gas reservoir[J].Natural Gas Industry,2006,26(10):99-101.
郭平,黄伟岗,姜贻伟,等.致密气藏束缚与可动水研究[J].天然气工业,2006,26(10):99-101.
[20]Fu Daqi,Zhu Huayin,Liu Yicheng,et al.Experiment al study of the movable water in the rock pore of low permeability gas layer[J].Journal of Daqing Petroleum Institute,2008,32(5):23-26.
付大其,朱华银,刘义成,等.低渗气层岩石孔隙中可动水实验[J].东北石油大学学报,2008,32(5):23-26.