Applying Geochemistry Monitoring Method For Determining Output And Water Cut Contribution Of Commingle Producing Well Which Produced Putaohua And Fuyu Reservoir

At present, the workers of the eighth oil plant use production logging method to determine single-layer's output and water cut of commingle producing well which produce Putaohua and Fuyu reservoir at the same time. This method takes a long period and high costs. And it's also difficult to determine single-layer's water cut. Aims at this problem, this present writer provides gas phase chromatogram fingerprint methods to determine single-layer's output. The experimental result shows quite well similar with oil sample chromatogram fingerprint from same reservoir at different commingle producing tracts F483 and Zhou182. But oil samples from different reservoir, its chromatogram fingerprint shows obvious different. This result can be used to monitor single-layer's output contribution. The result of single-layer output calculation which we run shows good consistency. This conclusion shows us produced water from different reservoir must have different contribution properties which has tightly relation with alkyl phenol and organic acid of crude oil which from relevant reservoir. So according to chromatogram fingerprint feature of commingle produced water and single-layer produced water, we can revolve those problems about produced water on theory.Appling gas chromatography method to determine single layer's output and water cut of commingle producing well enriches commingle production technology. This application not only can be used to determine single layer's output, but also water cut. This technology must play important role to develop Putaohua and Fuyu reservoir effectively.