The study of the corrosion resistance of cement clinker of MgO-ZrO_2 materials

Methods of Formation Resistivity Correction for Salty Mud Invasion;

Under mud invasion,resistivities of oil layer and water layer in different radial depth are influenced by various factors.

Based on analyzing main factor of generating low-resistivity hydrocarbon reservoir, the corresponding recognition methods are established respectively according to high bound water saturation, sand shale interlayer deposition and mud invasion as the leading causes of generating low-resistivity hydrocarbon reservoir, and the succes.

A dualbox system, consisting of a feeder box located at upslope and a test box located at down_slope, was used to analyze characteristics of rill erosive sediment particle size distribution with 150 gradients under different rainfall intensities and sediment concentrations in the upslope runoff.