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Ismagilov T.A.,RN Ufa NIP Ineft LLC
Neftyanoe Khozyaystvo - Oil Industry | Year: 2015

This paper describes the modern approach to the water isolating gel design for the waterflow baffling technologies, considering the mechanisms (routes) of injected water breakthrough, which were developed by RN-UfaNIPIneft LLC, considering the global experience and tested at Rosneft oilfields. Main types of waterflow routes are discussed, presented gel placement algorithms depending on type of water breakthrough, methods of its routes identification and field experience results. Hydrodynamic features of waterflow in different water breakthrough routes result in different technological requirements for gel placement design. Specific features of design meet the requirements of each type of water breakthrough mechanisms. Findings from oilfields show us increasing essential efficiency potential of this EOR design. Source

Fedorov A.I.,RN Ufa NIP Ineft LLC | Davletova A.R.,RN Ufa NIP Ineft LLC | Pisarev D.Y.,RN Yuganskneftegas LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2014

The paper presents a method for calculation of closure pressure on hydraulic fractures on injection wells as a parameter determining the beginning of fracture growth. The method is based on formation stress-strain state modeling in an area close to the fractured wellbore. The model for calculation takes into account the evolution of pressure field caused by exploitation. The results of modelling show good agreement with field data and can be used as a method alternative to field measurements methods, that now-a-days are the basic instrument of closure pressure determination. © B.A., 2014 Source

Latypov I.D.,RN Ufa NIP Ineft LLC | Fedorov A.I.,RN Ufa NIP Ineft LLC | Nikitin A.N.,RN Yuganskneftegaz LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2013

Article is devoted to generalization of the results of reorientation refracturing method carried out on Prirazlomnoye and Priobskoye oilfields (RN-Yuganskneftegaz LLC) for solving the stimulation of the formation. Geophysical logs confirmed the fact of the reorientation refracturing in five wells. The proposed indirect methods of diagnosing the reorientation refracturing increase the accuracy of the interpretation. The technique allows to control the reorientation refracturing by creating the necessary depression and calculating the time of stimulation. Source

Ziganbaev A.Kh.,RN Ufa NIP Ineft LLC | Suleymanov D.D.,RN Ufa NIP Ineft LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2013

This article is devoted to the studying of the Bazhenov formation, notably the prediction of its lithological variability. The basic lithotypes on log data and core description, the estimation of the degree of differentiation of the section on lithotypes in the field of velocity and density characteristics have been done. The results of simultaneous inversion angle stacks and calculating the seismic cubes elastic properties, on the basis of which is built three-dimensional lithological model of Bazhenov formation on the Salymskoye field, are shown. Source

Ismagilov T.A.,RN Ufa NIP Ineft LLC | Magzianov I.R.,RN Ufa NIP Ineft LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2013

The paper discusses the principles of water shut-off using flow diverting technologies in premature breakthrough of injected water to the producing wells in the hydrodynamic conditions associated with in-situ reservoir crossflow. It is shown the basic performance requirements of the agents and methods of it's direct placement to improve impact in these conditions.For a successful application of the technology the agent must be suitable for the requirements of the resistance factor, the time of gel formation and the residual resistance factor. According to the results of the implementation the maximum technological effect can be reached in primary using, relative efficiency of the injection technology is reduced after repeated using without increasing the pumping volume of the agent. Source

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