Quantitative evaluation of water-flooded zones by using raw resistivity inversion

It provides a new way for water-flooded zone interpretation.

In waterflood-production oilfields, formation water resistivity of water-flooded zone is not only the basic parameter for water-flooded zone evaluation but also the "bottle neck" which restrict water-flooded zone evaluation.

Study on evaluation method of water flooded layer in Chaoyanggou Oilfield;

Wavelet packet energy characteristic identification of water flooded layer;

This paper introduces a new method used to identify the water flooded layers on the basis of the flow unit.

Logging interpretation of watered-out zone in high water cut stage in low permeability reservoir;

Recognizing watered-out zones by using traditional well logs;

Regional linear model of water cut vs. water saturation in watered-out zone and its application;

Application of genetic neural network to waterflooded zone identification;

Evaluation method for waterflooded zone with geochemical data: A case study from Xingnan oilfield, Daqing, China;

Water-displacing-oil rock electricity mechanism experiments are done by using the practical cores under the stimulated formation conditions to research the relationships among various parameters of waterflooded zones in deep-seated reservoirs of Dongpu depression,such as porosity,resistivity,water saturation and injection pressure,etc.

By using the geochemical log data, the basic principles and its parameter calculation method for water-out reservoir interpretation are described, the standard and interpreting chartboard for geochemical dividing of water-out reservoir in Zaoyuan Oilfield are established from the aspects of reservoir geochemistry.

BNLL is one of the important methods of water-out reservoir interpretation of low porosity, low permeability and low salinity reservoirs in casing wells of Tuha Oilfield, by which the water-out degree and fluid properties are displayed visually, the special action of BNLL logging technique in finding out residual oil is demonstrated through quantitative interpretation and examples.

On the basis of the dynamic method and conventional water flooded zone interpretation method, this paper analyzes the distribution rules of residual oil by using the various production data of oil-water well during drilling, testing and production.