水平井测井评价技术在大港油田的应用

Horizontal-well Logging Evaluation Technology Applied in Dagang Oilfield

大港油田水平井测井工艺主要使用随钻测井,其系列为随钻MPR电阻率测井和套管补偿中子测井。在对比随钻电阻率测井资料与双感应测井资料在水平井中响应特征差异的基础上,总结出了水平井中随钻电阻率测量的主要影响因素为地层各向异性和仪器偏心。在结合大港油田实际情况的基础上,提出了一套水平井综合评价方法,利用斜井褶积技术和优化合成技术来减少邻近围岩影响以及仪器偏心影响,应用三维空间储层对比技术来描述储层的空间分布情况和评价水平井的流体性质,在实际应用中收到了较好效果。

MPR multi-parameter propagation resistivity LWD logging and CNL compensated neutron logging in cased hole are widely used in horizontal well logging in Dagang oilfield. Based on comparison between the MPR LWD data and dual induction-focused logging （DIFL） wireline data, and integrated with realities of Dagang oilfield, concluded is that the dominant influence factors of MPR are formation anisotropy and tool eccentricity, then developed is a new set of synthetic evaluation technologies of horizontal well, such as deviated hole convolution and logging data optimum combination to eliminate effects of shoulder bed and tool eccentricity, 3D reservoir correlation technology to describe reservoir configuration and evaluate fluid property. The technologies are effective in practice.