Improving the reliability of determining physical properties of heterogeneous clay reservoir rocks using a set of techniques

To this date, most of the oil and gas reserves are hard-to-recover, that is, they are located in deposits confined to low-permeability reservoirs. Hydraulic fracturing treatment (HFT) is one of the methods of production stimulation that allows making the oil recovery profitable from such reservoirs. The given article discusses regression analysis to predict HFT efficiency and select candidate wells.

Section: Introductionmentioning

confidence: 99%

Forecasting the hydraulic fracturing efficiency when selecting wells for an event

Valeev

Mukhametshin

Anisimov

2022

“…Experience shows that the problem of intensification arises when opening productive formations in the process of drilling wells. It can be solved with the use of highquality drilling fluids, appropriate equipment and technological methods of well casing, which ensure reliable separation of productive formations and exclude clogging [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The structure of the oil-bearing strata and possibility of extracting oil from them

Akhmetianova

Bagmanov

Raymanov

et al. 2022

It is important to study the structure of oil-bearing strata is. In many ways, the structure of the Earth’s layers affects the possibility of intensifying oil production. This is one of the urgent problems of the oil industry. Obviously, at various stages of oil field development, methods of intensifying oil production, depending on the structure of oil-bearing rocks and geological and physical characteristics have their own features, which are manifested when they are used in the field conditions. Determination of the oil recovery factor (ORF) causes great difficulty in the operational assessment of oil reserves. At the stage of initial assessment, this indicator is taken either by analogy, or approximately. In order to make this parameter more valid, the main factors influencing its formation were studied. The formula for calculating oil recovery factor takes into account three main coefficients: grids, displacement and waterflooding.

“…The main part of the largest and most productive deposits has been developed for several decades and is at the final stage of development. The most effective use of the existing fund is necessary to maintain oil production levels amid the gradual depletion of fixed assets and transition to the development of areas with deteriorated filtration and reservoir properties [1][2][3][4][5][6][7][8][9][10]. A decrease in reliable information about the current energy state caused by the need to increase the duration of shutdowns during hydrodynamic studies of wells is an attendant problem [11].…”

Section: Introductionmentioning

confidence: 99%

Indirect determination of reservoir pressure by changing operating modes of exploration and recovery wells

Grishchenko

Kharisov

akupov

et al. 2022

The results obtained in the article enable to draw a conclusion about the sufficient accuracy of assessing the energy state and the possibility of using an algorithm for the indirect determination of reservoir pressure for solving practical problems of geological exploration and geological recovery research in selecting and planning geological and engineering operations and monitoring the work of the base well stock. However, algorithms for indirect determination of reservoir pressure should not fully replace well testing but they can be considered as an additional tool for assessing the reservoir pressure and their results should be analyzed considering the experience of the reservoir development in specific geological conditions.