Selection of Precipitation Scheme for Submerged Water-bearing Formation with Middle-sized Coarse Sand and Cobblestone

中 粗砂 含砾卵石潜水 含 水层降水方案选择

The examples of application to the oilfields indicated that 3-resistivity overlying method can not only effectively distinguish between oil-and water-bearing zones in sand and shaly sand formations and calculate the effective water saturation of oil-bearing zones but also effectively identify oil-and water-bearing zones in calcareous sand formation .

油田应用实例指出，三电阻率覆盖法能够有效地直观识别 砂岩和泥质砂岩油、 水层，计算油层有效含水饱和度，同时还能够有效地直观识别钙质砂岩地层。

In order to ensure the similar permeability the water-bearing beds are classified by lithological character which are A ( gravel sand gravel ) B ( sand-gravel sand ) and C ( sand ) .

为使 含水层导 水性相近，将 含 水层按岩性分为A类（砾石－ 砂砾石类）、B类（砂砾石、砂类）和C类（砂类）；

After most reservoirs in Shengli Oilfield came into high water-bearing period such phenomena have appeared as serious deficiency lowered temperature large amount of sand production in reservoirs and so on .

胜利油田多数砂岩油藏已进入高 含水期开采，油层温度普遍有所降低，同时大量 出 砂，造成 地层亏空严重。

New Sinking-by-Drainage Method Used in the Construction of Extra Large and Special Shaped Open Caisson in Water-Bearing Sand Bed

特大型异形沉井在 含水 砂层中的新颖排水下沉法