Study on the quantitative evaluation of waterflooded layer and the distribution law of remaining oil have been a very important problem which is urgent for resolving.

Benefits of LWD for formation evaluation in Dulang west field;

In these situations,the logs acquired will be used for routine formation evaluation of nettogross,porosity,and possibly water saturation.

In accordance with the remarkable frequency dispersion characteristics of rocks,a complex resistivity logging(CRL) method has been recently proposed by Chinese researchers to improve the residual oil and high/low salinity formation evaluation in the continental sedimentation.