Downhole and Directional Drilling Tools

As the upstream oil and gas market continues to evolve to faster drilling and advanced measurements, Reuter-Stokes has been at the forefront of delivering customized formation evaluation and directional sensor measurements for oilfield services companies and Measurement While Drilling / Logging While Drilling (MWD/LWD) system OEMs around the globe.

Reuter-Stokes manufactures downhole sensors and electronics to support your downhole operations, including scintillation detectors for gamma-ray and spectroscopy applications and neutron detection to confirm you have the best data for your formation evaluation.

Our engineers are ready to customize a solution to solve your latest drilling challenge so you can accomplish more in the field.

Core capabilities

Coil winding for fluxgate manufacturing
Scintillation crystal machining and polishing
Low moisture/oxygen glove boxes
Patented optical coupler technology
Custom TIG welding equipment
Complete radiation test capability
Brazing furnace for sapphire optical components and ceramics for metal brazing

We engineer and build sensors to withstand high temperatures, shocks, and vibrations. We also design for high sensitivity, low power usage, and operation in small spaces near the bit for optimal precision of measurement.

While Reuter-Stokes has a wide selection of standard products, most of our gamma sensors and neutron detectors start as custom designs. Customization is a collaborative process with our customers to ensure the final product meets the rigors of a given application.

Our objective is to deliver improvements you can measure – in efficiency, reliability, availability, and performance.

Gamma Sensors

^{For gross counting, spectral, and density gamma sensing.}

Reuter-Stokes' gamma sensors provide geologists and operators with the precise measurements required for accurate formation location and identification.

Sodium Iodide (NaI) scintillators with open configuration options.
Crystal packages optimized for light output, energy resolution and sensitivity.
Shock survivability to 1,000 g
Random vibration rating of 20 grms
Operating temperatures to 200˚C (392˚F)
Customize crystal size, mounting, interface adaptations or integrated radioactive calibration sources.

Neutron Detectors

^{For gross counting neutron and neutron porosity detection}

Thermal and epi-thermal detectors based on the pioneering Reuter-Stokes Helium-3 proportional tube design.

Drilling Application Sensors from 0.75 in. to 1.00 in. diameter
Wireline Application Sensors from 1.00 in. to 2.50 in. diameter
Easy parallel operation and good gamma discrimination in virtually any downhole setting.
Patented anode suspension minimizes shock-induced false counts.
Customizable sizes, gas mixtures, electrical terminations, and mechanical interfaces.

Orientation Modules

^{Digital and Analog, Fluxgates}

Our most compact downhole survey technology, built to double the mean time between calibrations.

Flexibility: Innovative electronics and packaging result in smaller orientation modules with borehole survey technology designed to fit into the smallest tools.
Reliability: Accurate inclination and azimuth survey data.
Lower cost of ownership: Proven durability with an extended lifespan and minimal downhole power consumption.
Minimizes operational costs associated with downhole batteries and enables the horizontal drilling techniques required for unconventional well development.

Sodium Iodide Scintillation Crystals

The choice is crystal clear.

The Reuter-Stokes gamma sensor assembly’s high-strength sapphire window, combined with a patented optical coupler, allows for maximum light output.

Our uniquely rugged design ensures the largest volume scintillation crystals can be used in operations with minimal footprints while keeping sensitive equipment safe from damage in these extreme applications.

The radial suspension system contributes to greater detector sensitivity. By minimizing the radial space needed to isolate the crystal from vibration, larger crystals can be packaged inside the sensor housing.

Higher sensitivity can help customers log faster or reduce the size of the detectors for more compact tools and thinner bed resolution. Thin wall titanium housings minimize gamma attenuation for better gamma radiation transmission at lower energies. These features allow customers to operate downhole confidently, even in the most severe conditions.