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REASONS FOR NEGATIVE RESULTS OF EXPLORATION DRILLING DURING THE DEVELOPMENT OF FRACTURED RESERVOIRS AND THEIR INFLUENCE ON THE RESOURCE BASE OF PROSPECTIVE STRUCTURES

O. V. Shiganova, L. M. Doroginitskaya, V. V. Sapyanik, E. Yu. Lapteva

Siberian Research Institute of Geology, Geophysics and Mineral Resources (SNIIGGIMS), Novosibirsk, Russia

Lack of attention to technological procedures for opening and testing low-capacity pore-fractured and fractured reservoirs in Western Siberia in the last century has become one of the leading reasons for the withdrawal of potentially oil and gas prospective areas from drilling with a negative result. The calculations showed that the balance between reservoir pressure, depression on the reservoir and the tangential stress in the near well space significantly affect the inflow of the product to the well. Using the example of selected structures examined, it is shown that taking into account the influence of technological drilling and well testing procedures on the results of prospecting and appraisal drilling can reasonably increase the hydrocarbon resource base when performing a geological and geophysical assessment of a potentially promising fund of structures.

Keywords: fractured reservoir, stress-strain state, tributary, geological resources of hydrocarbons, Western Siberia.

DOI 10.20403/2078-0575-2020-2-26-31