Experience of direct method using for hydrocarbon accumulations prospecting within areas of shale spreading in Poland

The results of the application of frequency-resonance technology of remote sensing (RS) data processing and decoding for the detection and mapping of hydrocarbons (HC) accumulations in the areas of shale spreading within the prospecting blocks in Poland are analyzed. The obtained materials are compared with the results of studies on the local area of Marcellus shale basin in the United States.

Within the surveyed areas the anomalous zones of the “gas accumulation” (“gas, oil”) type were found and mapped. Parameters of some anomalous zones (their size and estimates of maximum values of fluid pressure in the reservoirs) allow to suggest these local areas for priority detailed study by geophysical methods and drilling. This is essentially the “Sweet spots” areas. The wells, drilled within the surveyed areas, do not fall into the contours of the detected anomalies; commercial gas inflows in these wells were not received. The hydrocarbon potential development starting of the surveyed areas from detected anomalous zones will significantly reduce the ecological impact on the environment. The results of investigation show that the projected productive horizons can be located both above and below the shale complexes. Therefore, when the hydrocarbon accumulations searching in the areas of shale spreading, the virtually all (available for drilling) interval of the cross-section should be studied.

In general, the results of experimental investigation show that proven mobile technology of frequency-resonance processing and interpretation of RS data allows you to detect and map operatively the “Sweet spots” zones within the shale rocks spreading.