Well logging techniques and formation evaluation - an overview / Методы каротажа скважин и оценки пласта - обзор

Once the prospect generation is made based on seismic and geological surveys, location for drilling is released based on the most probable structure in the hydrocarbon point of view. The most probable structure is based on the structure identified with

1. A mature source rock

2. A migration path connecting source rock to reservoir rock

3. A suitable reservoir rock (porous & permeable)

4. A trap

5. An impermeable seal

After the identification of the structure, location is released for drilling. Once the well is drilled, the need arises for ascertaining the worthiness of the well. Till the time the well is being drilled it is not sure that the well drilled will bear hydrocarbon. To ascertain the potential of the well it is required to Log the well. <...>