InSitu CO₂

The important consideration of CO₂ content

Carbon dioxide is soluble in crude oils, swells net oil volume, and reduces oil viscosity even before it achieves miscibility. The amount of CO₂ must be accurately accounted for when developing your hydrocarbon reserves.

However, reliable quantification of CO₂ from reservoir fluid samples can be difficult, especially if there is water in the collected samples, because CO₂ easily reacts with water, whether from mud filtrate contamination or formation water.

The filter array and grating optical spectrometers of the InSitu Fluid Analyzer real-time downhole fluid analysis system have the ideal wavelength range for the detection and analysis of both hydrocarbons and CO₂. A dedicated channel on the filter array spectrometer to the CO₂ absorption peak is complemented with dual baseline channels above and below that subtract out the overlapping spectrum of hydrocarbon and small amounts of water.

The resulting CO₂ content is delivered in real time with the upper and lower accuracy tolerances on the measurement to give you increased confidence in the measurement accuracy for different environments.