裂缝-溶洞型储层产能特征研究——以塔河油田12区为例

Study on the Attribute of Deliverability for Fracture-Cavity Reservoir-an Example from the Block 12 of Tahe Oil Field

塔河油田12区奥陶系油藏属于缝洞型碳酸盐岩油藏,具有极强的非均质性。裂缝-溶洞型储层是油田主要产油层,且主要分布在构造高部位和断裂、伴生裂缝发育带。本文分析了该类储层控制的高产井、中产井和低产井等3类油井的平面分布特征,并且运用录井和波阻抗反演剖面等资料研究了各类产能井的剖面特征。为提高钻探成功率和优先部署高产、中产井提供依据。

The Ordovician reservoir in the Block 12 of Tahe oilfield is crevice-hole carbonate reservoir of serious heterogeneity.Fracture-cavity reservoir is the main oil producing formation,and it distributes to the structural plateau and the vegetal region of fault and companion fracture.The plane pattern for the high capacity wells,medium-wells and low productivity wells was studied,and the data such as well logging and the inversion of wave impedance was used to study the profile for different deliverability type wells.The criterion was offered to improve drilling success ratio and give priority to deploy the high capacity wells and medium-wells.