Decision making during treatment of bottomhole zone by polymeric systems on the basis of indefinite cluster analysis

Salavatov, T.Sh.; Strekov, A. S.; Karazhanova, M. K.; Koilybayev, B.N.

doi:10.1016/j.procs.2017.11.267

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Следует отметить, что как в отечественной, так и в зарубежной научно-технической литературе освещены многие аспекты применения полимеров в добыче нефти [2][3][4]. Особенно широко используются полимеры для загущения закачиваемой в пласт воды, повышения нефтеотдачи, снижения водопритока в обводнившихся эксплуатационных скважинах и выравнивания профиля приемистости в нагнетательных скважинах.…”

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“…С другой стороны, полимерные растворы при контакте с пористой средой снижают ее проницаемость. Причем эффект снижения проницаемости пористой среды после ее контакта с полимером сохраняется и после прокачки через нее десятков и сотен поровых объемов воды [3].…”

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Study of Rheological Properties of Polymer Solutions

Bissembayeva,

Khadieva

2023

YSJ

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Annotation. The long-term operation of the deposit, the alternation of reservoir zones with high and degraded filtration and capacitance properties due to the heterogeneity of the reservoir, the deformation of the development system due to downtime and inactivity of wells predetermined the selective movement of water through the most permeable layers. As practice shows, the widespread use of traditional flooding technology does not ensure the effective production of residual reserves from low-permeable and highly watered formations. Therefore, increasing the degree of oil extraction from the depths of the developed fields using effective methods of active impact on water-oil-saturated formations is an important scientific and technical task facing the oilmen of the republic. One of the most effective and promising methods of stabilizing oil production is physics-chemical technologies based on the use of injection of polymer compositions. The main purpose of injection of polymer compositions is to equalize the heterogeneity of productive layers by reducing the mobility of the displacing agent in highly conductive interlayers and increasing the coverage of the reservoir by flooding both in power and in stretch. As is known, the effectiveness of the use of technologies based on polymer solutions depends on their good selective filterability into zones with high water saturation, which allows creating water-insulating screens in the desired direction and to a sufficient depth. It is known that the effective use of polymer solutions depends on the influence of various factors: molecular weight, polymer concentration in solution, filtration rates, reservoir permeability, as well as such an important parameter as the rheological properties of polymer solutions. The study of the rheological properties of polymer solutions allows us to substantiate and propose for practical implementation effective integrated technologies for increasing oil recovery during the operation of the oil fields under consideration. In this work, the rheological properties of polyacrylamide, physical parameters, taking into account their physics-chemical properties, are studied. The influence of mineralization and water hardness on polymer solutions is considered. The issues of mechanical destruction of polymers have been studied. The degree of mechanical destruction of the polymer is estimated based on the results of the study of the rheological properties of the polymer sample.

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Study of Rheological Properties of Polymer Solutions

Bissembayeva,

Khadieva

2023

YSJ

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Forecasting the use of enhanced oil recovery methods in oilfields of Bashkortostan

Андреев

Chizhov

Chibisov

et al. 2019

IOP Conf. Ser.: Earth Environ. Sci.

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Today oil and gas complex in Bashkortostan is characterized by a deterioration in the quality of raw material base, which is associated with a significant degree of highly productive fields. It is a long-term operation, resource increment due to the discovery of fields unconventional oil, which are confined to low-permeable and weakly thick reservoirs oil deposits with extensive underwater gas and waterfowl zones. At the current stage of unconventional oil development of Bashkortostan oilfields, the urgent tasks are to study the experience of their development; identify peculiarities of the influence of geological and technological factors on the development efficiency of productive layers reserves; geological and commercial substantiation of various methods for enhanced oil recovery. The classification of development objects is based on the methods of mathematical statistics. Recommendations to improve the impact effectiveness on residual and unconventional oil reserves are based on the criteria-based analysis of enhanced oil recovery. The paper describes characteristics of reservoir systems and results of object grouping for oilfields development in Bashkortostan. Taking into account the established criteria for effective use of enhanced oil recovery and geological and field conditions of selected groups of objects with similar characteristics, there are some recommendations to increase the efficiency of oil recovery with targeted formation effects technologies.

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Results of system drilling techniques and completion of oil and gas wells

Polyakov

Chizhov

Kotenev

et al. 2019

IOP Conf. Ser.: Earth Environ. Sci.

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The article presents results of the improved technology for drilling and completion of oil and gas wells (Multi-technology Complex). The results are based on synchronization and consistency of thermodynamic processes of well bore strengthening and implementing system approaches and solutions. The authors discuss brief analytical generalizations on the quality and efficiency of well lining, factors that violate the well lining technology, and related problems. In addition, disadvantages of traditional technologies and the reason for their low efficiency in the construction of wells are mentioned. The authors give analytical generalizations of the results of well construction with the use of the Multi-technology Complex in various mining and engineering conditions of Russian fields. The method’s advantages over traditional methods are noted. There are no occurrences of various complications in a well construction: fountains, emissions, gas-oil-water manifestations, absorption, instability and hydraulic fracturing of rocks. Furthermore, the complex allows improve well and filter structures reducing the metal intensity of the structure and the time frame.

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Decision making during treatment of bottomhole zone by polymeric systems on the basis of indefinite cluster analysis

Cited by 3 publications

References 3 publications

Study of Rheological Properties of Polymer Solutions

Study of Rheological Properties of Polymer Solutions

Forecasting the use of enhanced oil recovery methods in oilfields of Bashkortostan

Results of system drilling techniques and completion of oil and gas wells

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