The article describes an integrated approach to the development of solutions for the effective involvement of oil in the development of a thin-layered “hazel grouse” type reservoir. The principles of justification based on facies, geological-hydrodynamic and geomechanical modeling are analyzed. In the course of the work, new core data and a petrophysical model were obtained, which made it possible to substantiate the TRIZ status of the object. A conceptual geological model was built and an assessment of geological reserves was carried out to determine the priority zones for putting wells into operation.
The article experimentally establishes the regularities of the separated gas pressure growth in the annulus depending on geological and technical characteristics of producing wells; it obtains an experimental dependence for calculating the period of stabilization of the gas pressure in the annulus when the pressure is equal to the pressure in the discharge manifold of the well.
The authors state that during the production there is the process of transition of deposits to the category of bottom water-drive reservoirs due to frontal displacement by the injected water. As a result, the nature of water flooding becomes similar to the primary areas of bottom water-drive reservoirs. It is shown that for water-drive areas, the development is characterized by unfavorably high input values of water flooding and its intensive growth in the range of oil recovery factor from 0.1 to 0.3 fractions of units. The nature of the displacement curves of areas with water-oil zones (WOZ) is identical and differs only by the amount of water flooding of oil reserves in a deposit or area, which allows drawing a conclusion about a similar mechanism of oil displacement, which is characteristic of oil reservoir. It is shown that the main feature that characterizes the development of areas and deposits with water-oil zones is the increase in water flooding at the first stage of production.
It is shown that when a borehole fluid surface is impacted by a compressor and receiver, the wave propagates to the bottom hole zone, where its amplitude increases due to the addition of the reflected wave. It was found that if it is necessary to obtain high speeds, it is more expedient to pump down of the liquid using more accessible hydraulic equipment, such as a pumping unit. It is noted that the use of simple and inexpensive supporting equipment allows creating a fluid flow at the wellhead with the required speed.
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