Advanced Gas Analysis
When determining if sufficient amounts of formation gases are present in a reservoir, inadequate gas extraction from drilling fluids or improper sample handling can skew formation-gas measurements and decrease the accuracy of total-gas values and compositional analysis.
Mud loggers use a gas trap to agitate recirculated drilling fluid and liberate formation gas. The liberated gas is directed to a gas sensor or gas chromatograph (GC) to measure the formation gas composition. The quality of the measurement is limited by the mixing of extracted gas with air in the gas trap and by the unmeasured entrained formation gas that remains in the drilling fluid. Heavier components are more prone to remain in oil-based or hydrocarbon-based drilling fluids, which creates additional analysis hurdles.
Weatherford has a portfolio of industry-leading services for extracting and evaluating hydrocarbons entrained in drilling fluid.
We provide tiered services ranging from total hydrocarbon-gas detection to high-end, wide-spectrum compositional breakdowns and isotopic concentrations. Our offerings include customizable installations that allow for more accurate identification of produced, recycled, and contaminated gas.
Weatherford is an industry leader in formation-gas analysis.
Our suite of solutions helps ensure optimal-gas extraction and detection for better estimation of reservoir-fluid properties. Our combination of technology, personnel, analysis, and interpretation provides high-quality gas data and insights in open- and closed-loop drilling environments.
Our Heated CVT system provides a steady flow of drilling mud from the flow line to the gas trap, which minimizes changes in gas readings due to fluid fluctuations.
Heating the mud (70°C for WBM and 90°C for OBM) normalizes deviations in mud temperature due to high geothermal gradients and aids heavy hydrocarbon extraction. With a delta configuration, measurement of recycled and contaminated gas is determined by analysis of gas extracted from both the suction pit and mud return line. Gas data from our Heated CVT extraction closely aligns with actual reservoir compositions, including in traditionally difficult deepwater environments. Our distinctive advanced gas extraction systems allows for a better mud gas representation, higher quality sample, quicker analysis, while providing heavy hydrocarbon detection for enhanced formation evaluation. Our industry proven analysts partner with our clients assisting them in determining answers, solutions, and realization of reservoir potential.