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One of the most common problems reported in the mature oil-producing regions of the world, i.e. related to the fields that are in a state of declining production or reaching the end of their productive lives, is associated with organic deposits forming both in and around the wellbore. Paraffin, resin and asphaltene deposit (ARPD) has been a problem for operators in many areas since the beginning of petroleum production from wells. There is a variety of techniques and means to control these deposits, and the most p...

The paper discusses the comparative analysis of crude oil extracted from the core material and bituminous oil using the method of gas-liquid chromatography. The method involves partition of hydrocarbon mixtures in the columns under the dynamic conditions. The output is recorded as a series of peaks - each one representing a compound in the mixture passing through the detector. Gas-liquid chromatography is a powerful tool in analyzing complex petroleum mixture components very close in their composition even when th...

The purpose of this paper is to outline the findings of the study into the quality of water used for oil-field water injection operations to support the reservoir pressure. Comparative assessment of injection water quality at cluster pump stations has been carried out by means of a particle size distribution analyzer. The device was used to measure the particle size distribution in wastewater. Water samples from cluster pump stations located in the area producing oil from the Romashkinskoye oil field, Devonian for...

The amount of oil reserves considered difficult to recover is constantly increasing and this has become a major current feature of oil production associated with the development of heavy and high-viscous oil fields. The efficiency of their development requires considering the thermodynamic and rheological characteristics of the crude oil to be extracted. The knowledge of rheological parameters, such as viscosity, shear rate and shear stress of crude oil is vital to most areas of the petroleum industry and is espec...

The issue concerning reasoning and evaluating the optimal bottom-hole pressures is considered to be one of the challenges in mature oilfield development. Bottom hole pressure optimization is a relevant and researchable problem, and it requires a nuanced approach to a solution development. Operators look to reduce operating costs in mature fields that are approaching cessation of production. The issue of production below the bubble point is therefore becoming more important. The paper investigates how an oil produc...

The paper is considering the results of the development of three hundred and three deposits of the Romashkinskoye oilfield, which is composed of porous fractured carbonate reservoirs. The investigation was devoted to the challenges associated with increasing of the production from the carbonate reservoirs on the basis of study concerning the conversion degree of the reserves involved in the development and production through the non-stationary production well operation. The authors present a comparative analysis o...