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通过垂向干扰测试,表明塔里木盆地东河砂岩油藏存在垂向渗流。在有垂向渗流且打开程度不完善的油井中,流体的流态表现为球形渗流,它是平面渗流和垂向渗流的总和。在地层测试解释中,若仍用平面径向流方法,则必然造成渗透率解释的严重偏差。对于这类油藏,打水平井或斜井能有效地提高产能。水平井提高产能的幅度随Kv/Kh的增大而增大;斜井在任何渗透率比值下都能提高产能,以井斜大于40°时最为明显。二者相较水平井比斜井更优。
Through the vertical disturbance test, it shows that there is vertical seepage in the Donghe sandstone reservoir in the Tarim Basin. In wells with vertical seepage and open imperfections, the fluid flow behaves as a spherical seepage, which is the sum of the seepage and the vertical seepage. In the formation test interpretation, if the plane radial flow method is still used, it will inevitably lead to a serious deviation of permeability. For such reservoirs, horizontal wells or inclined wells can effectively increase productivity. The horizontal wells increase productivity with the increase of Kv / Kh. Inclined wells can increase productivity at any permeability ratio, most obviously when the deviation is greater than 40 °. Both are better than horizontal wells in comparison with horizontal wells.