ИССЛЕДОВАНИЕ СКВАЖИН, ЭКСПЛУАТИРУЮЩИХ НИЗКОПРОНИЦАЕМЫЕ КОЛЛЕКТОРЫ

Abstract

Assessment of the condition of the near-well zones of productive reservoirs (NZR) is one of the main tasks to be performed in the processing of these hydrodynamic wells. A reliable assessment of the hydrodynamic state of the NZR makes it possible to make informed decisions on the implementation of geological and technical measures aimed at restoring and increasing the productivity of wells and oil recovery of reservoirs. In practice, the evaluation of the condition of the NZR is performed when processing the pressure recovery curves (CVD) using various methods. However, the results of processing often do not correspond to the actual state of the NZR. It is not uncommon for the situation when the values of the skin factor obtained during the processing of the research data assume large negative values without any obvious grounds. A significant part of the CVD obtained during well research in the development of oil fields in Bashkortostan does not meet the requirements under which their unambiguous processing can be carried out. Difficultly attractive oil reserves today form the basis of Russia's active reserves. In this structure, the predominant share belongs to reserves in low-permeability reservoirs. Wells that open such reservoirs are low-yield, operating in most cases in a periodic or intermittent mode. In one of the first studies on low-yield wells in Russia, hydrodynamic studies of wells were carried out. Construction of recovery curves for low-yield wells at sites (Turney, Famennian, Zavolzhsky horizon). Bashkortostan operates in accordance with the norms and regulations approved by PAO ANK Bashneft.