Advances in Openhole Well Logging

Openhole well logging comprises a broad spectrum of measurements that includes mud, measurement-while-drilling (MWD), and conventional wireline logs. These measurements are the primary source of formation evaluation data used in applications ranging from individual drilling-well appraisals to comprehensive reservoir description studies. Openhole well-logging technology continues to evolve to address the needs for improved accuracy in measuring reservoir properties. Numerous technology advances have recently occurred. This paper presents several examples of new developments and applications to illustrate the current state of technology and to offer insight into future development trends.