An in-line NIR/endoscope technique for observations in real hydrocarbon multiphase systems

A novel technique for creating in-line images of black oil/water systems is presented. The technique utilizes the sensitivity of a CCD (Charge Couple Device) in the NIR wavelength region where crude oils are transparent to light. The measuring system consists of a probe, an endoscope, a CCD camera, a strobe light and a PC. A high-pressure in-line instrument based on the technique is presented in detail, and typical resulting images are included. The measuring system has shown that it is possible to create images from black crude oil systems with the use of NIR light, and the technique has been applied in an in-line instrument facilitating observations in high-pressure real hydrocarbon systems.