Collar-based and probe-based propagation resistivity technologies capable of operating with both mud pulse or EM MWD systems.

Scientific Drilling’s resistivity propagation tools deliver the ultimate performance required for applications such as geosteering and formation correlation.

WAVE PROPAGATION RESISTIVITY (WPR)

When geosteering or logging programs require a deeper depth of investigation and improved accuracy, the WPR is utilized for its fully compensated design.  With both dual frequency (400 kHz and 2 MHz) and dual spacing, the WPR outputs a total of eight independent resistivity measurements.  The symmetrical design and compensated transmitter configuration improve the accuracy of the measurement by providing real-time borehole compensation while eliminating thermal drift.

Scientific Drilling’s LWD technical experts perform in-house pre-well modeling to support geosteering suitability.  The WPR is an ideal tool for implementing a proactive geosteering program in wells where gamma ray contrast is not significant enough to steer and staying in-zone is critical to the well’s success.

DELIVERING THE ULTIMATE VALUE

/ Provides 8 resistivity curves with varying depths of investigation
/ Works in both oil-based and water-based mud systems
/ Integrated with real-time functionality for both Scientific MP and EM MWD
/ High resolution data stored in memory can be used to analyze zones where MWD was not transmitting data
/ Measuring only 10’ in length, bit-to-sensor distances can be optimized for multiple LWD logging sensors

 

 

PROPAGATION RESISTIVITY TOOL (PRT)

Scientific Drilling’s Propagation Resistivity Tool (PRT) provides a sonde-based tool option for resistivity well logging and geosteering.  It’s single frequency (2 MHz), dual spacing design (23” and 33”) outputs a total of 4 independent resistivity measurements. The PRT probe is interchangeable with all four collar sizes, reducing the number of tools needed on location.  It’s unique design and solid reliability proves that resistivity logging can be a low-cost/low-risk venture from surface to total-depth.

DELIVERING THE ULTIMATE VALUE

/ Provides 4 resistivity curves with multiple depths of investigation
/ Works in both oil-based and water-based mud systems
/ Integrated with real-time functionality for both Scientific MP and EM MWD
/ Cost-effective solution for qualitative analysis of resistivity measurements