油藏岩石出砂规律及其对渗透率的影响

利用我国渤海地区J油藏疏松地层岩样,研究了油藏岩石的出砂规律以及出砂对渗透率的影响。结果表明,油藏岩石的出砂量和流出砂的粒径随流体流速的增大而增大,出砂能使岩石的渗透率增大,出砂量越大,渗透率增大的幅度越大;在保证出砂油井正常生产的前提下,让部分地层砂粒随流体流出油井地面,能提高地层的渗透率和油井的产量。

Reservoir Sand Production Rule and Its Influence on Permeability

with the loose sand of J block of bohai oilfield, the sand production rule and sand production on permeability is studied. The result show that the sand production rate of reservoir rock and the grain diameter of carried sand get larger with fluid velocity getting larger;sand production make permeability of rock larger; the larger sand production rate ,the larger up --grdinet of permeability ;on the control of production of sand producer, the permeability of reservoir and production rate can be got larger by sand production flowing out of the sand well.