The article studies geological and technological parameters’ impact on degree and nature of production wells. The wells influence the water injection into wells in the carbonate reservoirs of the Tournaisian stage of the Birsk saddle. The study presents an algorithm with substantiating technological solutions to increase the efficiency of developing low-productive deposits via internal flooding. It also considers the development of facilities for hard-to-recover reserves with high production costs and low profitability. This is made in order to use the resource base of the Volga-Ural oil and gas provinces more efficiently.
The paper describes a new method for solving one of the global problems – paraffin rempval from pipelines. The problem is relevant for all oil producing and transporting companies of the Russian Federation and other countries. The method for solving these problems has several advantages, including duration of the overhaul period, high removal efficiency and profitability due to the use of fuel cells. The methodallows for maintaning a constant temperatures equal to the melting point of paraffin.
The researchers have developed simplified models of the studied formations in the Langepasneftegaz TPP to forecast the effectiveness of using non-stationary waterflooding with flow control and flow diverting technologies. To increase oil recovery and intensify the influx of oil from the reservoirs, they recommended the integration of technologies. The article shows that complex technologies for impacting oil and gas deposits using non-stationary waterflooding aimed at increasing the oil recovery coefficient and limiting the movement of water in the reservoir while stimulating the bottom-hole zones of the reservoir will significantly increase the efficiency of field development.
Unsteady waterflooding went through several stages. Within the pilot works in April 2009, cyclical water injection was started in Block 7 (central section). In addition, alternate water injection into the horizons of the Jurassic and Cretaceous sediments of Block 10 began. For this purpose, injection wells equipped with devices for simultaneous separate water pumping were used. The significant effect of non-stationary waterflooding in the experimental sections allowed for the application of the technology in other blocks. The technology implementation scheme was applied for injection wells of Blocks 6 and 10. Since July 2010, cyclic injection has been used for many wells. Periods of non-stationary operation of injection wells were determined experimentally. The reservoirs with heterogenous permeability containing highly permeable and low-permeable layers are the most optimal ones. The heterogenous structure of the reservoir provides a large contact area between layers with different permeability levels which allows for non-stationary effects due to the occurrence of overflows between the layers. It can reduce the water content of the products and increase oil production.
When analysing the criteria measuring the volume of oil deposits with wide gaps in configuration of reservoir parameters and physicochemical properties of fluid, it is necessary to group and characterize objects under study. Classification makes it possible to adjust conformity and distinctive features of deposits, and explain research theories. The analysis of information according to the subjects determined by the parameters measured or evaluated is difficult to carry out. It requires a lot of time and effort. Therefore, it is necessary to reduce the data volume, compress initial information to the smallest number of characteristics. Parameters can be selected from initial data or calculated and modified (i.e. minimum loss of data on the objects under study). The effective analysis tool capable of identifying the problems is the principal component analysis (PCA) which is a method for reducing the data volume. The principal component can be found in almost every text using the multivariate analysis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.