原油指纹技术在陆梁油田产能监测中的应用

APPLICATION OF GEOCHEMICAL FINGERPRINTING TECHNIQUE IN PRODUCTION ALLOCATION IN LULIANG OILFIELD

原油色谱指纹是指原油中通过色谱分离的正构烷烃之间的化合物。分析陆梁油田侏罗系和白垩系以及白垩系内不同储层的原油指纹特征 ,确定这些原油指纹的差异及引起差异的原因。进行了两层与三层原油的配方实验 ,建立了分层产能的计算模型。结果表明 ,对于两层及三层合采的情况 ,实际配方与指纹计算的误差分别在 9%以内和12 %以内 ,说明原油指数可以用于计算该油田多层合采井中各层的产能贡献。

Fingerprints are compounds that appear in between the paraffin on a chromatograph of oil. In the present work, differentiations were made on the fingerprints of oils from Jurassic and Cretaceous reservoirs in Luliang oilfield, and the cause behind the differences among the fingerprints was analyzed. Formulation experiments were carried about for cases of commingled production from two and three pay zones; computation models of production allocation were established. It is shown that the error between the result from formulation experiments and that from computation models is 9% and 12%, respectively, for the two and three pay zones cases. Therefore, the proposed models are valid and can be used for production allocation and production monitoring in this oilfield.