The process of monitoring the current condition of oil recovery at the production fields in Western Kazakhstan

Gulnaz Moldabayeva,Gabit Suyungariyev,Sairanbek Akhmetov,Zhanar Shayakhmetova,Raikhan Suleimenova

doi:10.5937/jaes0-30840

Gulnaz Moldabayeva, Gabit Suyungariyev + Show 3 more

Open Access

https://doi.org/10.5937/jaes0-30840

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Abstract

The problems of improving the technology aimed at reducing the volume of associated water production and increasing oil recovery from partially flooded deposits is very urgent. This paper discusses topical problems of further effective development of depleted oil fields to increase their final oil recovery on the example of the oil field in Western Kazakhstan. The methods of bottomhole zone treatment implement a deflecting effect on filtration flows. Therefore, this method includes a wide range of geological and technical measures: down-spacing; water production restraining; conformance control of injectivity profiles; forced production; all types of mechanical, thermochemical and thermal technologies. Geological and statistical models are proposed for diagnosing wells for a premature increase of water production using factor analysis calculations for base production and Hall plots. The degree of temperature influence of the primary components of the compounds on the rheology, filtration characteristics, and stability of inverted emulsions was determined. The classification of oil loss factors was carried out based on the results of downhole analysis and oil production losses were determined. Geological and statistical models for well diagnostics for premature increase in water production were built using factor analysis calculations for base production and Hall plots.

Highlights

Many researchers have studied and established the main reasons for water encroachment, the breakthrough of injected water through highly permeable and undersaturated layers [1]; pulling up the water cone from oil-water zones [2]; breakthrough of stratal waters from above and below-lying water beds along the borehole annulus [3]
Factor analysis is applied under field conditions to identify wells with the highest oil losses, as well as for further operational actions to restore oil production
The following is an algorithm for applying the results of well after well factor analysis (Figure 7)

Summary

Introduction

Many researchers have studied and established the main reasons for water encroachment, the breakthrough of injected water through highly permeable and undersaturated layers [1]; pulling up the water cone from oil-water zones [2]; breakthrough of stratal waters from above and below-lying water beds along the borehole annulus [3]. Leakage of production strings in various water-saturated sections. Geological and statistical calculations are proposed for diagnosing wells candidates for RIW (repair and insulation works) [4,5,6,7]. The present paper examines the increase in the efficiency of water shut-off works with the use of new technologies, taking into account the geological and technological characteristics of the Karamandybas production field operation. The field is located in the western part of the Mangyshlak Peninsula and is administratively subordinate to the Karakiyansky district of the Mangistau region of the Republic of Kazakhstan. At the field, drilled wells uncovered a stratum of Paleo-Meso-Cenozoic deposits with a maximum depth of 3202 m (well 27). There are three structural levels in the section, separated from each other by regional stratigraphic and angular unconformities [11, 12]

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