42 Performing diagnostic technological services, namely, analyzing microseismic data, log data, spectral gamma-ray, radioactive and non-radioactive tracer log, production log (PLT), and produced fluids for tracer analysis, chlorides analysis, hydrocarbon composition analysis, and hydraulic fracturing fluid compositional analysis; performing oil well diagnostics; oil prospecting, namely, well logging and testing; providing on-line non-downloadable computer software for use in analyzing chemical tracer data for the purpose of assessing reservoir heterogeneity, assessing the effect of water and gas injections in a reservoir, determining the amount of remaining oil in near-well and inter-well zones, and to assist in surveying and prospecting in the field of oil recovery and production.