Yogesh S Dave

Title: Yogesh S. Dave: Inventor in Borehole Formation-Stress Measurement

Introduction

Yogesh S. Dave is an inventor based in Stamford, Connecticut, whose patent work includes methods and apparatus for measuring formation stress in boreholes. His listed portfolio includes 5 patents, with work focused on tools that can be configured for measurements in both open and cased boreholes.

Latest Patents

“Methods and Apparatus for Borehole Measurement of Formation Stress” describes a modular sonde designed for different borehole conditions. The sonde can be conveyed on an electric wireline, with or without coiled tubing to deliver hydraulic energy from the surface. Shared modules include telemetry electronics, orientation equipment, a hydraulic energy accumulator, fluid chambers, hydraulic power, pumpout, and flow control.

For open-hole measurements, the patent describes configurations using either an instrumented inflatable packer with orienting and probe modules or an instrumented straddle-packer assembly. For cased-hole measurements, configurations include a gunblock assembly with orientation and hydraulic systems for formation pretesting and stressing, or a straddle-packer assembly paired with a casing-perforation device. These arrangements are intended to obtain data about formation stress characteristics.

Career Highlights

Dave is associated with Schlumberger Technology Corporation. His patent work reflects an engineering approach to adapting measurement equipment to different borehole environments and operational requirements.

Collaborations

Dave’s listed coworkers include T. S. Ramakrishnan and Richard A. Plumb. Their names are associated with the technical context of his work on borehole measurement systems.

Conclusion

Yogesh S. Dave’s patent portfolio highlights modular borehole instrumentation designed to measure formation stress in open and cased wells.