Application of modulation noise to data acquisition of petroleum logging;

The problems of the petroleum logging mainly indwell in the data acqiusition and the data transmission.

The nuclear magnetic resonance technology and the well logging tool;

In order to make sure the trouble-free operation, the device of the winch not only offers the power to the cable, but also collects the depth, velocity and tension of the cable in the silo operating such as well logging, perforation and repair.

This paper proposed a designing scheme of Manchester code in well logging cable communications system.

The wireline telemetry technology is the key part of petroleum well logging system.

This is a tentative approach to determinating the dynamic feature and bearing capacity of the oil derrick with computer technique.

Currently, spatial rigid frames, such as buildings, bridges, platform, oil derricks have been more or less damaged caused by long-time fatigue, corrosion, etc in service, thus leading to poor structure or low performance.

Research a sort of scientific test method is very important on theory and application to enhance evaluating the carrying capacity of oil derrick and safety evaluation method.

Taking the oil well drilling and geological core drilling for examples,the recent advances of drilling technology at the beginning of the 21st century are briefly described.