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Kozyaev A.A.,Siberian Federal University | Razyapov R.K.,Vostsibneftegaz LLC | Bibik A.N.,RN KrasnoyarskNIPIneft LLC
Geomodel 2015 - 17th Scientific-Practical Conference on Oil and Gas Geological Exploration and Development | Year: 2015

The research subject is a productivity characteristics prediction of carbonate fractured oil reservoirs. Authors suggested to cope with the issue by means of building a hybrid fractures geomodel incorporating integrated geological-geophysical information of different scales. The key role in the proposed methodology play wire-line well logs (microscaners, wide-spaced acoustic) and 3D seismic survey. Several practical examples of the methodology implementation on one of Eastern Siberian fields are demonstrated. Authors found out quite interesting correlations between well data and seismic information, that allowed not only maximize the seismic survey implementation effectiveness, but also, as a consequence, to reduce uncertainties. Full scale geological model was built, including the fracture model. The following parameters were forecasted: fractured porosity, permeability tensor. Those parameters were incorporated into the hydrodynamic modeling process. Finally, relevant case studies were analyzed and the research continuation strategy developed.

Chashkov A.V.,Co Ltd RN KrasnoyarskNIPIneft | Kiselev V.M.,Siberian Federal University
4th International Conference and Exhibition: New Discoveries through Integration of Geosciences, Saint Petersburg 2010 | Year: 2010

Authors of the work considered the ability of lithologic structure determination and total and secondary porosity defining on the basis of one of the several oilfields located in the Eastern Siberia. This oilfield is characterized by chemical and biogenic reservoir rocks with porosity of cavity and fractured structure. There are some theoretical backgrounds for porosity structure determination by comparing data of sonic log with formation evaluation methods using for total porosity interpretation. However fracture and cavity influence on porosity determination can be hided by various petrophysical parameters such as shaliness, salinization, anhydritization etc. In the given work the technique by a quantitative estimation of porosity of fractures, vugs and intergrain porosity for carbonate reservoirs with difficult lithological structure on complex sonic logging- neutron gamma-ray logging is offered. For the correct decision of the assigned task it is necessary to make "adjustment" of the stated algorithm for those wells where full formation evaluation methods was executed.It is showed that using given method obtained results reliably represent geological features of considered field.

Kashnikov Yu.A.,Perm State University | Gladyshev S.V.,Perm State University | Ryazapov R.K.,Vostoksibneftegoz OJSC | Kontorovich A.A.,RN KrasnoyarskNIPIneft LLC | Krasilnikova N.B.,RN KrasnoyarskNIPIneft LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2011

There given the results of long-term tests of samples with a fractures, in conditions of higher effective pressures. According to the results of tests and hydrodynamical researches of wells there was selected the geomechanical model, this model defines the changes of permeability in process when the reservoir pressure are decrease, in terms of Barton-Bandis fracture. In conclusion there given the results of hydrodynamical modeling of first-priority area in YT oilfield, with a glance of fracture.

Kashnikov Y.A.,Perm National Research Polytechnic Institute | Ashikhmin S.G.,Perm National Research Polytechnic Institute | Shustov D.V.,Perm National Research Polytechnic Institute | Antonenko A.A.,RN KrasnoyarskNIPIneft LLC | Krasilnikova N.B.,RN KrasnoyarskNIPIneft LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2013

The results of experimental and analytical studies of changes of fracture permeability samples Yurubcheno-Tokhomskoye gas field under the influence of effective stress are presented. The purpose was to study the changes of fracture permeability due to increasing and decreasing effective stress, in other words due to depletion and waterflood treatments. Processing of the results of the experiment carried out on the basis of geomechanical model crack Barton-Bandisa. In result the laws of variation of fracture permeability in loading and unloading of samples and reduce the estimate of filtration properties of the rock mass. It is shown that the use of the law to reduce the resulting permeability and recovery is possible with the information on the distribution of cracks in the array and their disclosure. This information can be obtained by using modern methods of geophysics and geomechanics.

Filatov D.A.,RN KrasnoyarskNIPIneft LLC | Kolesov V.A.,RN KrasnoyarskNIPIneft LLC | Krasilnikova N.B.,RN KrasnoyarskNIPIneft LLC | Isaeva V.V.,RN Exploration LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2013

Irkutsk license plots of Rosneft Oil Company are located at the North-Western, Western slopes of Nepsky arch of Nepsko-Botuobinskaya anteclise. Geological oil and gas exploration in the area of Irkutsk license plots has been started during the early 70-s of the last century. Within the period of 2009-2013 on the area of the considered license plots there were drilled 15 exploratory wells. These wells were considered as the base for studying rock properties and rock material composition as in the wells of new fund there has been done full core sampling, core samples were subject to the wide range of petrophysical investigations - using both standard samples and fullsized samples, there has been done the expanded complex of well logging. This paper presents obtained petrophysical functions, description and grounding of algorithms of well logging data interpretation.

Kvachko S.K.,RN KrasnoyarskNIPIneft LLC | Bibik A.N.,RN KrasnoyarskNIPIneft LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2014

The compound structure of carbonate reservoirs in Eastern Siberia prevents the forecast of zone of improved reservoir and complicates the exploration of new areas. The industrial-productive complexes of Vendian-lower- Cambrian age in a section of the Nepsko-Botuobinskaya anticlise (NBA) attract more and more researchers. In this work erbogachenskiy and preobrazhenskiy horizons confine to the oil and gas complex of the Vendian are covered. Sections of 10 wells licensed areas of Rosneft in the Irkutsk region are studied. A detailed lithofacies characteristic of deposits was carried out, the influence epi-and diagenetic processes on reservoir properties of rocks was leaded. On the base of complex research of physical composition of reservoir it was attempted to bind the features of the void volume of reservoir to conditions of their formation. © C.K., 2014

Serebrennikov D.S.,RN KrasnoyarskNIPIneft LLC
Society of Petroleum Engineers - SPE Arctic and Extreme Environments Conference and Exhibition, AEE 2013 | Year: 2013

Oil and gas production in the high northern latitudes is a top priority tor the oil and gas industry. At the same time, this trend has a number of problems both dependent and independent of man. For example, extreme temperatures, weather conditions, the vulnerability of the environment, the lack of infrastructure, the duration of the polar night, the emergency situation. It can be assumed that the effects of emergencies (loss of life, environmental damage, etc.) as a result of the above problems may be more severe in the Arctic. Independent predictors (low temperature environment vulnerability, etc.) are difficult to minimize. Therefore, to increase the level of security or to reduce the risk of a more efficient method would be a reduction in the likelihood of accidents, prevention of emergency situations. Thus, there is a need to improve the interaction between risk assessment and life cycle of oil and gas production facilities in the Arctic shelf. Copyright 2013, Society of Petroleum Engineers.

Ivkin S.,RN KrasnoyarskNIPIneft LLC | Glukhikh V.,RN KrasnoyarskNIPIneft LLC | Koparnik V.,RN KrasnoyarskNIPIneft LLC
Geophysics 2013 - 9th EAGE International Scientific and Practical Conference and Exhibition on Engineering and Mining Geophysics | Year: 2013

Detailed geophysical work by 400 and 1700 Mhz GPR was conducted on the left-bank protected by reinforced concrete plates in downstream water of Krasnoyarsk hydropower station. Geological-geophysical profiles were constructed on most plates, conventionally divided into three areas. It was revealed that underneath all plates there are local air cavities/clearances between the soles of plates and subsoils, except for newly constructed 1-5 plates. Most of the cavities have 0.05-0.08 m depth, although a few cavities have 0.10-0.13 m depth. Two cavities 0.28 and 0.44 m deep were identified and investigated by video recording. An assumption on the cavities structure and formation was done.

Filatov D.A.,RN KrasnoyarskNIPIneft LLC | Krasilnikova N.B.,RN KrasnoyarskNIPIneft LLC
Neftyanoe Khozyaistvo - Oil Industry | Year: 2013

Use of standard research techniques doesn't solve the problem of proper definition of hydrocarbon saturation index as well logging resistivity significantly exceeds core resistivity. On the base of the obtained relations "core - well logging" and "well logging - well logging" there has been developed algorithm of calculation of hydrocarbon saturation index. The obtained results are typical for carbonate oil-wet reservoirs. There is presented a comparison of obtained results with the results of core investigations (including definition of residual water saturation).

Romantsov A.S.,RN Krasnoyarsk NIP Ineft LLC | Filatov D.A.,RN Krasnoyarsk NIP Ineft LLC
Neftyanoe Khozyaystvo - Oil Industry | Year: 2015

Currently the non-traditional reservoirs with complex structure and texture are becoming the main reservoirs for research and exploitation in Eastern Siberia. This article reviews the approach to defining total and effective capacity of fractured carbonate Riphean rocks on the example of Kuyumbinskoye oil-gas-condensate field.

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