录井资料在杏树岗油田薄差层及表外储集层开发中的应用

Application of mud logging data in thin & poor zones and in the development of the un-tabulated reservoirs in Xingshugang Oilfield.

大庆杏树岗油田储集层岩性、物性变化范围较大,非均质性较严重,表内薄差油层和表外储集层评价较为困难,测井资料对表外储集层的水淹状况并未进行解释评价。针对此情况,分析了录井资料评价薄差层及表外储集层水洗状况机理,在应用井壁取心分析资料评价表内中厚油层水洗程度的基础上,探讨了表内薄差层及表外储集层的水淹程度评价方法,建立了岩石热解、饱和烃气相色谱及荧光显微图像评价方法。通过实例说明,该方法应用效果较好,实现了对表外储集层水淹状况的评价,指导了射孔方案的编制工作。

As to the conditions that the lithological and physical changing range in reservoirs in Xingshugang Oilfield are larger,the heteroge- neity are heavier,the evaluation for the tabulated thin & poor res- ervoirs and the un-tabulated reservoir are more difficulty and the water flooded degree in the un-tabulated reservoir are not evaluated and interpreted by well logging data,the authors analyzed the mechanism of evaluating the water flooded degree for the thin & poor reservoirs and the un-tabulated reservoirs from mud logging data,on the basis of applying sidewall coring data to evaluate the water flooded degree of the tabulated middle-thick reservoirs.The paper discussed the water flooded degree of the tabulated thin & poor reservoirs and the un-tabulated reservoirs,set up the evalua- tion methods for rock pyrolysis,gas chromatography of the saturat- ed hydrocarbon and the fluorescence image.It was showed by prac- tical examples that the method effect was better,it could realize the evaluation on the water flooded degree of the un-tabulated reser- voirs,and it could guide working out perforation plan.