Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use

An infrared water fraction meter configured to measure a water phase of a flow stream of a gas well, the meter comprising:

• a light source probe configured to emit a narrow band of infrared light at a predetermined wavelength to a flow stream including a gas phase, a liquid hydrocarbon phase and a water phase whereby the infrared light is substantially transmitted through the gas phase and the liquid hydrocarbon phase and substantially absorbed by the water phase;
• and
• a light detector probe configured to detect attenuation of the infrared light by the flow stream whereby the attenuation indicates the water fraction of the flow stream.

An infrared water fraction meter configured to measure a water fraction of a multi-chase flow stream, the meter comprising:

• a light source probe configured to emit a narrow band of infrared light at a predetermined wavelength to a multi-phase flow stream including a first set of phases and a second set of phases whereby the infrared light is substantially transmitted through the first set of phases and substantially absorbed by the second set of phases;
• and
• a light detector probe configured to detect attenuation of the infrared light by the multi-phase flow stream whereby the attenuation indicates the water fraction of the multi-phase flow stream.

An infrared water fraction apparatus configured to measure a water phase of a flow stream of a gas well, the apparatus comprising:

• a light emitter means for emitting a narrow band of infrared light at a predetermined wavelength to a flow stream including a gas phase, a liquid hydrocarbon phase and a water phase whereby the infrared light is substantially transmitted through the gas phase and the liquid hydrocarbon phase and substantially absorbed by the water phase;
• and
• a light detector means for detecting attenuation of the infrared light by the flow stream whereby the attenuation indicates the water fraction of the flow stream.

An infrared water fraction apparatus configured to measure a multi-phase flow stream the apparatus comprising:

• a light emitter means for emitting a narrow band of infrared light at a predetermined wavelength to the multi-phase flow stream including a first set of phases and a second set of phases whereby the infrared light is substantially transmitted through the first set of phases and substantially absorbed by the second set of phases;
• and
• a light detector means for detecting attenuation of the infrared light by the multi-phase flow stream whereby the attenuation indicates the water fraction of the multi-phase flow stream.