RU94040680A - Process of search for deposits of hydrocarbons - Google Patents

Abstract

FIELD: gas and oil prospecting. SUBSTANCE: originality of process lies in combination and sequence of operations during which reception of infralow frequency signals (electromagnetic, acoustic and thermal) is conducted simultaneously by profiles above examined structure at periods of maximal and minimal values of lunar-solar tides (falling tides) and by exposed differences of readings of characteristics one makes decision on presence (absence) of deposit of hydrocarbon. More accurate definition of deposit contour and of its thickness is performed by acoustic action in infralow frequency range on geological structures. This action is transmitted in three mutually perpendicular directions with shifting of second and third actions through half-period relative to each other. By characteristics of "voice of the Earth" received under such active action deposit is mapped and profiles of thickness of productive pool of deposit are plotted. More accurate determination of parameters of examined deposit is conducted by action on pool and reception of signals from ends of contour. This method is more effective than analogous ones, displays high precision and reduces time of examination of structures. EFFECT: enhanced efficiency and precision of process, reduced time of examination of structures. 3 cl

Claims (1)

A physicotechnological process has been developed for the search and exploration of hydrocarbon deposits in the studied structures, in particular, oil and gas deposits. The originality of this method lies in its principle set and sequence of operations in which they simultaneously receive infra-low-frequency electromagnetic, acoustic and thermal signals along profiles over the structure under study during periods of maximum and minimum values of lunar-solar tides (low tides) and judged by the differences in the readings of characteristics the presence (absence) of hydrocarbon deposits. The refinement of the reservoir contour and its power is carried out when the geological structures are exposed to acoustic influences in the LF range, and this effect is transmitted comprehensively in three mutually perpendicular directions, shifting the second and third effects on the half-cycle relative to the first and one another. According to the characteristics of the “voice of the Earth” taken with such an active impact, the reservoir is outlined and power profiles of the productive formation of the field are built. A more accurate determination of the parameters of the studied deposits is carried out when exposed to the reservoir and receiving reflected signals from its dead-end zones of the circuit. This method is more effective than analogues, has high accuracy and rapidity of the study of structures.