油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
2015年
4期
42-45
,共4页
气%水两相%水平井%单井控制储量%物质平衡方程%水驱气藏
氣%水兩相%水平井%單井控製儲量%物質平衡方程%水驅氣藏
기%수량상%수평정%단정공제저량%물질평형방정%수구기장
gas water two phase%horizontal well%single well control reserve%material balance equation%water drive gas reservoir
水平井单井控制储量的计算是气藏工程中一项重要的内容，而产水使得单井控制储量的计算变得更加复杂，准确计算其大小对气藏后续开发有着重要的意义。基于水平井井筒附近椭圆形渗流场以及气、水两相渗流原理，定义气、水两相拟压力，建立了目前地层压力以及含水饱和度计算模型，并将水平井控制半径范围视作小型水驱气藏，结合水驱气藏物质平衡方程，得到计算产水水平井单井控制储量的简易新方法。实例计算与对比发现，计算结果与AIF方法、二元回归法、三元回归法以及压降法等经典方法计算结果相对误差较小，实用性较好，计算过程较为简单，仅需要单井生产资料及地层参数。
水平井單井控製儲量的計算是氣藏工程中一項重要的內容，而產水使得單井控製儲量的計算變得更加複雜，準確計算其大小對氣藏後續開髮有著重要的意義。基于水平井井筒附近橢圓形滲流場以及氣、水兩相滲流原理，定義氣、水兩相擬壓力，建立瞭目前地層壓力以及含水飽和度計算模型，併將水平井控製半徑範圍視作小型水驅氣藏，結閤水驅氣藏物質平衡方程，得到計算產水水平井單井控製儲量的簡易新方法。實例計算與對比髮現，計算結果與AIF方法、二元迴歸法、三元迴歸法以及壓降法等經典方法計算結果相對誤差較小，實用性較好，計算過程較為簡單，僅需要單井生產資料及地層參數。
수평정단정공제저량적계산시기장공정중일항중요적내용，이산수사득단정공제저량적계산변득경가복잡，준학계산기대소대기장후속개발유착중요적의의。기우수평정정통부근타원형삼류장이급기、수량상삼류원리，정의기、수량상의압력，건립료목전지층압력이급함수포화도계산모형，병장수평정공제반경범위시작소형수구기장，결합수구기장물질평형방정，득도계산산수수평정단정공제저량적간역신방법。실례계산여대비발현，계산결과여AIF방법、이원회귀법、삼원회귀법이급압강법등경전방법계산결과상대오차교소，실용성교호，계산과정교위간단，부수요단정생산자료급지층삼수。
The calculation of single horizontal well control reserve is important in gas reservoir engineering. Water producing makes the calculation more complicated. Accurately calculating reserve has important meaning for subsequent development of gas reservoir. Based on elliptic seepage field near horizontal wellbore and percolation theory of gas water two phase, pseudopressure of gas water two phase is defined, the current reservoir pressure and water saturation computational model is established, and radius control range of horizontal well is regarded as small water drive gas reservoir. Combined with material balance equation of water drive gas reservoir, a new simple method of single horizontal well control reserve of horizontal water producing well is obtained. Ac?cording to practical calculation and comparison results, and contrasted with AIF method, binary regression method, ternary regres?sion method and drawdown method, relative errors are smaller by using this new method. Meanwhile, the new method has benefits of good practicability, simple computational procedure, and only needs single well production data and formation parameters.
