核磁共振录井在辽河油田SH2区块的应用

Application of nuclear magnetic resonance logging in SH 2 block of Liaohe Oilfield

辽河油田SH 2区块储集层具有中低孔隙度、低渗透率和低可动流体含量的特征,由于储集层油质和物性的原因.该区块部分井虽然录井过程中显示较好.但试采时效果并不理想。针对这种情况,应用核磁共振录井方法.在分析储集层物性特征基础上.指出了反映可动流体特征重要参数之一的储集层可动流体含量的意义.探讨了应用可动流体含量结合孔隙度、渗透率和含油饱和度解释油水层的每照标准和图板。在该区块11口井的应用表明.效果较好.解释符合率为87.3%。

The reservoirs of SH 2 block in Liaohe Oilfield have the features of medial-low porosity,low permeability,low movable fluid content.Due to the reason of reservoir oili- ness and physical property,though the shows for partial mud logging wells in this block were good,the results for test production weren't ideal.In view of this situation,ap- plying nuclear magnetic resonance logging method,based on analyzing features of reservoir physical properties,the paper pointed out the meaning of reservoir movable fluid content,which is one important parameter for reflecting movable fluid features,and discussed reference criteria and charts for combining movable fluid content with porosity, permeability and oil-bearing saturation to interpret oil and water layers,the applied results of 11 wells in SH 2 block are good and interpretation coincidence rate is 87.3 percent.