CAJ | 학술논문

流体沿水平井筒产生的不均匀性压降，导致趾端的采收率降低，增加了跟端底水锥进的速度。提出一种将中心油管从水平井跟端延伸至水平井段的一种完井方式。该方式将水平井段分为两段，从而极大地降低了流体沿水平井简的压降。根据线汇叠加、镜像反映等原理推导得到中心管耦合模型，利用模型计算中心油管置入的最佳位置，延缓了底水锥进，延长了无水采油期。
류체연수평정통산생적불균균성압강，도치지단적채수솔강저，증가료근단저수추진적속도。제출일충장중심유관종수평정근단연신지수평정단적일충완정방식。해방식장수평정단분위량단，종이겁대지강저료류체연수평정간적압강。근거선회첩가、경상반영등원리추도득도중심관우합모형，이용모형계산중심유관치입적최가위치，연완료저수추진，연장료무수채유기。
Pressure drop along horizontal wells causes unequal drawdown along the well, which can rectuce the effectiveness of the toe of the well and increase the tendency for water and gas coning at the heel. Completions have been proposed to combat this effect by using a stinger that extends from the heel into the horizontal section. This reduces the magnitude of the pressure drop over the wellbore, because the well is effectively split into two segments of reduced length. Stinger coupling model can be achieved by liner superimpose and reflection mirror principle and mass conversation and momentum principle. So the difference of influx profile before and after stinger construction can be measured.