CAJ | 학술논문

针对水力压裂后形成的垂直裂缝井中裂缝不同位置导流能力不同的特点，根据压后流体渗流规律变化，基于稳定流理论，推导了按线性、指数及对数3种形式变化的低渗气藏变导流能力的垂直裂缝油井的产能预测模型，并分析研究了裂缝导流能力的不同变化形式对油井产量的影响。研究结果表明：与考虑常导流能力的垂直裂缝油井产量相比，考虑变导流能力的垂直裂缝油井产量将下降；按线性、指数及对数3种形式的变导流能力对垂直裂缝油井产量影响程度不一致，同时3种形式的变导流能力的系数越大，垂直裂缝油井产量上升幅度越小。
침대수력압렬후형성적수직렬봉정중렬봉불동위치도류능력불동적특점，근거압후류체삼류규률변화，기우은정류이론，추도료안선성、지수급대수3충형식변화적저삼기장변도류능력적수직렬봉유정적산능예측모형，병분석연구료렬봉도류능력적불동변화형식대유정산량적영향。연구결과표명：여고필상도류능력적수직렬봉유정산량상비，고필변도류능력적수직렬봉유정산량장하강；안선성、지수급대수3충형식적변도류능력대수직렬봉유정산량영향정도불일치，동시3충형식적변도류능력적계수월대，수직렬봉유정산량상승폭도월소。
In view of the flow conductivity of vertical fracture varying at different place after fracturing in the low per-meability oil reservoirs,based on the change of fluid flow rule after fracturing,a prediction model of the vertical fracture wells with varying conductivity was established by using the steady seepage theory,and the differences of the flow conduc-tivity vertical fractures on the oil well productivity were analyzed.The results show that the oil well productivity with var-ying conductivity decreases compared with constant conductivity.The effects of the differences of varying flow conductivity on the oil well productivity were different.The bigger the factors of three forms of varying flow conductivity are,the less the increase production of the vertical fracture gas well is.