The probing technique that the crawl device is used to run down the process and multi-probe measuring instrument system (SAT, RAT, CAT) could determine the production profile of the highly-deviated well and horizontal wells, thus providing basis for next stimulation measures.  Meanwhile, this technology could solve the backflow problem of the production profile logging.

    PNN logging monitors the remaining oil saturation of the thru-casing or thru-oil pipe reservoirs by measuring the changes in the remaining amount of thermal neutron in the formation along with the time. It covers the shortage of RPM instrument in the formation with low mineralization and low porosity, and could provide more precise gas/oil saturation.