LWD Services

LDI (Lithology Density Imaging)

Send gamma rays to the formation via the 137Cs gamma ray source mounted on the instrument, the instrument detector measures the amount of the gamma-ray photon reaching the instrument after formation attenuation, and calculates to obtain the formation density and photoelectric absorption index. The instrument adopts Cs-137 gamma ray source and NaI crystal counter, and is equipped with 16-sector azimuthal measurement imaging technology, and is installed with ultrasonic transducer for clearance detection and compensation calculation.