Cross-correlation allows us to determine whether adjoining traces are sufficiently similar to calculate accurate picks. Traces are first converted to number arrays and neighboring traces are compared according to gated sections. The addition of sample-by-sample multiplication generates a single number plotted at the gate center. The same process is repeated for successive gates. The cumulative process allows the generation of a cross-correlation. Time shift is determined by the largest positive value, which also corresponds to the numerical similarity of any two traces. That process is followed by determining the maximum advisable price. That figure is generated by the total hydrocarbon value minus their total development cost multiplied by the probability of success. A first well (Well a) must be drilled to determine the presence of hydrocarbons. If Well a yields hydrocarbons, a second well (Well...

Virtual wells are drilled to permit calculation of predicted flows and production capacity. Generally, the most important element of that modelling process involves the accurate determination of fault and horizon surfaces by the interpreter. As a general rule, the deeper the water, the less important large reservoir volume is in comparison to flow rate. A standard assumption in the industry is that a profitable deep-water prospect must yield a minimum return rate of at least six percent to justify its…