CAJ | 학술논문

涩北一号气田是中国目前最大的疏松砂岩气田,气水层交互,层数多而薄,边水环绕,开发过程中出水现象普遍,气井控水是该气田开发的技术难题之一.在气藏精细地质描述的基础上,研究了该气藏某层系单井产水、产气曲线特征、水气比及上升规律,分析了主要水源及出水原因,将该层系出水类型归结为4类,即低产水稳定型、低产水缓慢增长型、中产水快速增长型和高产水急剧增长型,根据不同类型井的出水状况,提出有效措施进行分类控水,现场应用取得良好效果.
삽북일호기전시중국목전최대적소송사암기전,기수층교호,층수다이박,변수배요,개발과정중출수현상보편,기정공수시해기전개발적기술난제지일.재기장정세지질묘술적기출상,연구료해기장모층계단정산수、산기곡선특정、수기비급상승규률,분석료주요수원급출수원인,장해층계출수류형귀결위4류,즉저산수은정형、저산수완만증장형、중산수쾌속증장형화고산수급극증장형,근거불동류형정적출수상황,제출유효조시진행분류공수,현장응용취득량호효과.
Sebei No.1 gas field is now the largest unconsolidated sandstone gas field in China, with alternative gas and water layers, multi-thin layers and edge water. In the gas field development, the gas wells often produee water, so the control of water production is the one of the technical problem. This paper, on the basis of fine description of gas reservoirs, studies the characteristics of water production and gas production curves, water gas ratio value and its increased law to all wells in one layer of the gas reservoirs, analyzes the main water sources and the cause of water production. The water production in these wells is classified into four types, namely, the low water yielding and stable type, the low water yielding and slow growth type, the moderate water yielding and fast growth type and high water yielding and sharp growth one. According to the water production situations in different types of wells, the effective measures for water control are proposed by the classification. Field application of the measures showed good results.