The IADC-RIM Downhole Telemetry Subcommittee is composed of members representing eight major oil companies, nine service companies, and one drilling contractor. The group has been meeting since January, 1985, in an attempt to bring a degree of standardization to the Measurement While Drilling industry in the areas of log format, correction charts, definitions of pertinent terms, and to present
... [Show full abstract] interim standards for specifying MWD – Communication – Channel – Performance as affected by variables such as depth, temperature, mud properties, noise, etc. The final objective is to provide information to the end users (drilling engineers, geologists, petrophysicists, etc.) that will enhance an objective understanding of MWD performance for evaluation and comparison of the products offered by the various MWD companies. The Subcommittee is presently divided into four groups: 1) Log Presentation Standards, 2) Drilling Parameter Influences on MWD Tools, 3) Standardized Tool Reliability Statistics, and 4) Specifications of Telemetry Systems. This paper is presented in four segments that reflect the findings and/or the recommendation of the four work groups, respectively.