巴什托石炭系巳楚组油藏油层中部压力系数为1.97,属超高压地层。其渗透率分布范围为(0.01-1000)×10^-3μm,峰值区间为(1~10)×10^-3μm,平均值12.89×10^-3μ,为低渗油藏。在低渗透率条件下,射孔能量释放空间小,射孔压力不能够得到快速扩散,管柱震动大,封隔器易失封。通过对BK9井射孔工艺及完井管柱进行优化,确保了试油一次成功,为同类高压低渗油藏的完井工艺提供了技术依据。%The pressure coefficient in the mid layer of Bachu Formation reservoirs in Bashituo carbonifemu system stands at 1.97 suggesting it an ultrahigh pressure stratunx It's also a low permeable reservoir featuring permeability range between 0. 01 to 1000× 10^-
展开▼