三水模型在腰英台油田储层测井解释中的应用

腰英台油田青山口组储层岩性致密, 低孔低渗, 孔隙结构复杂, 纵向和横向变化大。用传统测井解释模型往往造成解释级别较低, 与测试结果吻合率不高等情况。本文对三水模型进行改进, 并进行了数据处理和解释评价, 利用岩芯分析资料分区块、分层段分别确定模型的参数, 克服了三水模型参数多且不易确定的难点。在研究区致密含油层、低阻油层评价及油水界面划分上取得良好的应用效果, 提高了油气储层解释的可靠性。

Application of three water model in reservoir log interpretation in Yaoyingtai oilfield

The reservoir lithology of Qinshankou Formation in Yaoyingtai oilfield is tight in texture, low in porosity and permebality, complex in pore structure, and varied horizontally and vertically. Since the traditional models often lead to pessimistic interpretation, which is not coincident with test results. This paper improves the“three water model”and perform data processing and interpratation evaluation, which overcomes the difficulty of three water model's parameters massive and unable to determine through determining the model parameters in different sections and blocks by core analysis data. The sufficient application with achievement has been made in evaluations on tight and low-resitivity oil reservoirs, and the definition of oil-water interface in the studied area, improving the reliability of oil-gas reservoirs interpretation.