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2017/3
Bazhen Formation Rocks Heterogeneity Characteristic Based on Changes of Sedimentation Cycles of Mineral Composition
Geosciences

Authors: Maria A. SREBRODOLSKAYA graduated from the Gubkin Russian State University of Oil and Gas in 2013, with Master Degree in Petroleum Engineering of Gubkin Russian State University of Oil and Gas (National Research University). She is postgraduate student doing research in geological and mineralogical sciences, focusing petrophysics, log data processing in complicated reservoirs, well logging in horizontal wells. She is author of more than 40 scientific papers. E-mail: mary_roza@bk.ru
Andrey D. SREBRODOLSKY graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1975. He is Candidate of Geological and Mineralogical Sciences, senior lecturer of the Department of Petrophysics of Gubkin Russian State University of Oil and Gas (National Research University). His research interests include log data processing technologies, quantitative evaluation of anomalous reservoir pressures, including those in the Bazhen Formation. He is author of more than 60 scientific publications and 2 copyright certificates. E-mail: gis-sad@list.ru
Valentina A. KOSTERINA graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1970. She is candidate of Geological and Mineralogical sciences. Senior Researcher of the Department of Petrophysics of Gubkin Russian State University of Oil and Gas (National Research University). She is specializes in the studies of complex oil and gas reservoirs by well log methods. She is author of more than 50 scientific papers. E-mail: kosterinava@mail.ru

Abstract: Bazhen Formation cyclic structure is explained and mineral composition heterogeneity of these deposits is characterized. Histograms of distribution of main rocks components weights incl. kerogen, kerogen volume, coefficients of total and open porosity in sedimentation cycles are analyzed. The regularities of the organic material (kerogen) distribution are considered in detail, depending on the sedimentation cycle and carbonate material concentration. Histograms of distribution of gamma-ray index in Salym oilfield wells in sedimentation cycles are described. The features of the lithological structure and mineral composition of each of the three cycles are identified and described. The conclusions about the advisability of creating a differentiated approach to Bazhen Formation sediments interpretation model are made in order to reduce errors in determining the total porosity values

Index UDK: 550.8.056

Keywords: вazhen formation, sedimentation cycles, distribution histogram analysis, kerogen volume, Salym field

Bibliography:
1. Vendelshteyn B.Yu., Tsareva N.V., Kosterina V.A., Farmanova N.V., Abdrakhmanova L.G., Sokolova T.F., Belyakov M.A. Evaluation of the filtration-capacitive properties of Bazhen complex reservoirs by well logging methods. Geofizika [Geophysics], 2001, no. 4, p. 49-55 (in Russian).
2. Dorofeyeva T.V., Krasnov S.G., Lebedev B.A. and others. Kollektory nefti bazhenovskoy svity Zapadnoy Sibiri [The oil Bazhen Formation reservoirs of Western Siberia]. Edited by. T.V. Dorofeyevoy. Leningrad: Nedra, 1985.
3. Klubova T.T., Khalimov E.M. and others. Oil-content of Bazhen suite sediments of the Salym field (study results and prospects). M.: VNIIOENG, 1995.
4. Preliminary calculation of oil and dissolved gas reserves of the Bazhen deposit (Yu0 horizon) of the Bolshoi Salym field of the Nefteyugansk district of the Tyumen region as of 1.01.85. responsible executors I. I. Nesterov, B. N. Lyankov. Tyumen: ZapSibNIGNI, 1986.
5. Sonich S.P., Borkun F.Ya. and others. The method of calculating reserves, justifying of parameters and estimating of reserves of oil and dissolved gas of the Bazhen suite of the Salym field. Report SibNIINP, Tyumen, 1985.
6. Srebrodolskaya M.A., Zoloyeva G.M., Kosterina V.A. Kerogen concentration determination in the Bazhen suite reservoirs according to the gamma method, taking into account the sedimentation cycles. Geofizika [Geophysics], 2014, no. 1, p. 46-52 (in Russian).
7. Telishev A.G., Sonich V.P. and others. Calculation of oil and dissolved gas reserves in the Bazhen suite of the Salym field. Tyumen: SibNIINP, 1986.
8. Fursov A.Ya., Postnikov Ye.V., Postnikov A.V. and others. Geological bases and new technologies for reservoir forecasting and estimation of oil reserves in the sediments of the Bazhen suite. Ways of realizing the oil and gas potential of KhMAO. Khanty-Mansysk, 2000, p. 162-173 (in Russian).

2011/4
Features of Logging Data Interpretation Halite Containing Terrigenous Sections (on the example of Yarakta and Verkhnechonskoye horizons)
Petroleum geology, geophysics

Authors: Galina G. ZOLOEVA graduated from Gubkin Russian State University of Oil and Gas in 1964, she is professor of the Department of Well Logging of Gubkin Russian State University of Oil and Gas, Doctor of Geological and Mineralogical Sciences. Her research interests are study of complex oil and gas reservoirs by integration of logging data. She is author of 90 scientific works. E-mail: galina.zoloeva@mail.ru
Valentina A. KOSTERINA graduated from Gubkin Russian State University of Oil and Gas. She is Senior Fellow of the Department of Well Logging of Gubkin Russian State University of Oil and Gas, candidate of geological and mineralogical sciences. She specializes in the field of well logging of complex reservoirs of oil and gas, author of more than 50 scientific publications. E-mail: kosterinava@mail.ru
Olga G. NIKIFOROVA graduated from Gubkin Russian State University of Oil and Gas in 2007. She is senior geophysicist of the Department of Interpretation of Seismic Data and Well Logging at LLC “LARGEO”, candidate of geological-mineralogical sciences. She specializes in the interpretation of well logging data of complex reservoirs of oil and gas. She is author of 9 scientific publications. E-mail: nikiforova@largeo.com
Regina R. AYUPOVA graduated from Gubkin Russian State University of Oil and Gas in 2011. She is currently Intern researcher at the Institute of Oil and Gas. E-mail: regina.aju@rambler.ru

Abstract: The deposits of the Vendian-Lower Cambrian age of oil and gas fields in Eastern Siberia are largely modified by post-sedimentation transformations. The dominant influence on reservoir properties of rocks was provided through crystallization of halite in the pore space. The article deals with methodological aspects of the selection of complicated salinization terrigenous reservoirs and determination of their reservoir properties basing on a standard set of logging data

Index UDK: 552.54

Keywords: salinized terrigenous reservoir, halite, porosity, technique of selection of reservoirs, standard set of logging data

Bibliography: