The paper is devoted to the problem of mapping fractured and cavernous fractured reservoirs of the tutleym series within the Krasnoleninsk arc. It is shown that the most perspective deposits are those of the low-tytleym arc. The presence of relation between reservoir and acoustic properties of the rocks involved is stated. For reservoirs to be mapped the results of dynamic inversion of time sections are used

Abrosimova, О. О.

Kulagin, S. I.

Electronic archive of Tomsk Polytechnic University

REFERENCES1. Karagodin U.N. Introduction in oil lithmology. – Novosibirsk: Nauka, 1990. – 239 p.2. Ezshova A.V., Nedolivko N.M. Stratigraphy and deposits correlationof averagetop Jurassic of the east part of the Nyurolskoy hollow //Problems of Mesozoic stratigraphy of the WesternSiberian plate(materials of Interdepartmental stratigraphycal meeting on mesozoicof the WesternSiberian plate): Collection of scientific tr. / Ed. byGurari F.G., Mogucheva N.K. – Novosibirsk: SNIIGGandMS,2003. – P. 107–117.3. Atlas of rockforming organisms (lime and silicon) // Auth. V.P. Maslov. – Мoscow: Nauka, 1973. – P. 11. Table. 5, fig. 9.4. Egorova L.I., Tischenko G.I. Possibilities of forecasting of sandy bodies in the TriasNizshneurskiyAalenskiy deposits according to peculiarities of their formation // Geological structure and oilgas bearing ability of Western Siberia southeast / Ed. by Surkov V.S. –Novosibirsk: SNIIGGandMS, 1989. – P. 73–82.5. Egorova L.I., Tischenko G.I. Structure of the TriasNizshneurskiydeposits of the Tomsk area // Geology and oilgas bearing ability ofthe bottom horizons of the WesternSiberian plate’s cover / Ed. byV.S. Surkov. – Novosibirsk: SNIIGGandMS, 1990. – P. 18–27.Arrived on 25.05.2006Bulletin of the Томsк Pоlytеchnic University. 2007. V. 310. № 124Considered deposits have been allocated in a rank ofthe Deminskaya series by P.F. Lee in 1956, which later,in schemes of division into districts of Western Siberia,accepted at meeting in 1960 [1], has been renamed toTytleym. Three types of a cut are allocated based oncontent degree of an organic substance in the given formations: Chuelsk, Krasnoleninsk and Tobolsk, eachone of them is located in corresponding area [2]. Rockshave been formed in late Jurassic (LowTytleym subseries) and early Cretaceous (UpperTytleym subseries)times. The general capacity of the given deposits changes within the limits from 20 up to 40 m. Materials oflithologic and geochemical researches of the given deposits have underlied in the basis of some monographies, reviews and articles [3, 4, etc.], according to whichthe productive layers have been allocated in deposits,presented by siliceous and carbonate lithotypes, wheresecondary reservoirs are formed, fig. 1.Oilgas bearing ability within the limits of the Krasnoleninsk arc (Krasnoleninsk type of a cut) is proved onthe EmEgovskaya, Kamennaya, Lorbinskaya, SosnovoMysskaya, Palyanovskaya areas. Oil debits changewithin the limits from 0,5...3 up to 100 t/day and more,that is caused by reservoirs nonuniform structure offractured and fracturedcavernous types.The upper fluidosupport is represented by, widespread on the Krasnoleninsk arc territory, clay deposits ofthe Frolovskaya series. Occurrence of oil deposits inconsidered deposits, first of all, is possible under condition of isolation from permeable differences in underlaying rocks of the Abalakskaya series and formations ofthe preJurassic complex. Apparently, the variant of hydrodinamically connected deposits is also possible.Fig. 1. Lithologogeophysical cuts of the Tytleym series: 1) series borders (a), layers (b); 2) cable depth, m; 3) an interval of approbation and test results in the punched stem:Qн – oil debit, m3/day; deposits: 4) claysiliceous bituminous, 5) carbonate, 6) kaoliniteclayThe forecast of reservoirs development in deposits ofthe Tytleym series has been carried out on the basis ofseismology work results and wells data.Highspeed properties of rocks, composing series divisions, have been studied by means of acoustic logging.Layer speeds change as follows: the UpperTytleymsubseries – Vpl=2130...2800 m/s (bituminous claysiliceous formations); the upper part of the LowTytleym subseries – ≥4500 m/s (carbonate rocks); the bottom part –2600...4200 m/s (kaoliniteclay and siliceous rocks).24322439Qн=12СвитаПласттутлеймская267026432646Qн=0.8аб2410242024302440КС ГГКП2420243024402450Скв. 1 Скв. 2150 350 550 750АК24242440“сухо”ЮК0абалакскаяКС150 350 550 750АК123456Well 1 Well 2      SeriesStratumAbalakskayaTytleymUDC 552.578PREDICTION OF DEPOSIT OILBEARING CAPACITY OF THE TUTLEYM SERIES WITHIN THE KRASNOLENINSK ARC (WESTERN SIBERIA)О.О. Abrosimova, S.I. KulaginОАО «Sibneftgeophisica», Novosibirsk cityEmail: abrosimova@sibngf.ruThe paper is devoted to the problem of mapping fractured and cavernous fractured reservoirs of the tutleym series within the Krasnoleninsk arc. It is shown that the most perspective deposits are those of the lowtytleym arc. The presence of relation between reservoir andacoustic properties of the rocks involved is stated. For reservoirs to be mapped the results of dynamic inversion of time sections are used.In connection with absence of representative sampleon tests of the UpperTytleym subseries deposits, theanalysis of the following relative parameters has beenconducted: data of lateral logging in the studied layer andin the layer possessing the maximal resistance, situatedin bedding of the UpperTytleym subseries (βll), anddouble differential parameter of gamutlogging (ΔIgl)(i. e. gamutlogging indications of the investigated layerof bituminous rocks and basic layer of higherdepositedclays of the Frolovskaya series) [5]. At the next stage ofstudying, comparison of the obtained data to the resultsrevealed at research of bituminous rocks of the Bazshenovskaya series of the Salymsk oil deposit has been doneby the authors of work [6]. They have established that atincrease of quantity of permeable layers the density of bituminous rocks decreases, – that is reflected in increaseof ΔIgl and increase of βll; starting from values ΔIgl≥3 reservoir’s presence is marked [6], fig. 2.Because the significant part of wells has opened cutsof the UpperTytleym subseries, characterized as impenetrable or unclear saturation, at present time of theresearch, apparently, these deposits are necessary toconsider as low perspective object. This position will becoordinated with hydrodynamical researches – the maximal inflow of oil from these rocks makes 0,5 m3/day.Earth science25Fig. 2. Comparison of relative parameters ΔIgl and βll of bituminous rocks of the Krasnoleninsk arc (UpperTytleym subseries) and theSalymsk (Bazshenovsk series) deposits. Zones: I) impenetrable rocks, II) ambiguity, III) permeable rocks00.20.40.60.810 1 2 3 4 5 6 7 8IIIIIIБКГКскважины: а - Красноленинский свод,б - Салымская площадьа б wells: a – Krasnoleninsk arc, б – Salymsk areaFig. 3. Comparison of test results of wells and layer speeds of the LowTytleym subseries deposit: 1 – conditional border of depositssection of the LowTytleym subseries on collector’s properties depending on values of layer speeds25002600270028002900300031003200330034003500360037003800Vпл, м/с“сухо”Фбр,Qн=1.8-120“сухо”,фбр,Qн<1Скважины1wellsVpl, m/s "dry""dry",Comparison of acoustic characteristics and tests ofwells shows that at presence of intervals havingVpl<3000 m/s, in the deposit of the LowTytleym subseries (layer UK0) reservoir presence is possible, fig. 3.Collector development zones are mapped on cuts ofspeeds received as a result of dynamic inversion in asoftware package [7, 8]. Anomalies of the lowered values correspond to reservoir sites, fig. 4.Bulletin of the Томsк Pоlytеchnic University. 2007. V. 310. № 126Fig. 4. Fragment of speeds cut which is passing through a well, given an oil inflow1.952.00250020003000Х,м4000 5000Т,с3000БАШкалаVпл, м/сАКзона с доказаннойнефтеносностьюZone with proved presence of oilScaleVpl, m sFig. 5. Seismogeological model of productive layer UK0: 1) wells, on the right: number, on the left: effective capacity/effective capacity petrosaturated; 2) tests results: a – oil, b – «dry»; 3) isohypses of reflecting horizon B (Tytleym series bedding); 4) prospective brake infringements; 5) fissuring zones, corresponding to values of frequencies ≤22 HzSpeed scale, m/sAllocation of zones with prospective high fissuringhas been done on the basis of the frequencies map calculated in an interval of LowTytleym subseries depositing.In fig. 5 one example of comparison of speed map andfrequencies within the limits of the revealed oil deposit inLowTytleym subseries deposit is shown (layer UK0).The complex of methodical techniques of reservoirsmapping can be applied within the limits of zones whereinvestigated deposits have been formed in similar conditions of sedimentation, and, accordingly, characterizedby close mineral structure and structurallytextural features which allows using attributes of seismic record.Earth science27REFERENCES1. Decisions and works of Interdepartmental meeting on completionand specification of unified and correlational stratigraphical schemesof WesternSiberian lowland (Novosibirsk, 1960) / Under red. ofN.N. Rostovtsev. – Leningrad: Gostoptechizdat, 1961. – 465 p.2. Bazshenovskiy horizon of Western Siberia / Ed. by V.S. Vyshemirskiy. – Novosibirsk: Nauka, 1986. – 215 p.3. Zubkov M.U. Litologopetrographical characteristics of bazshenovskiy and abalakskiy sereies adjournment of the Krasnoleninsk arccentral part (Western Siberia) // Geology and geophysics. – 1999. –V. 40. – № 12. – P. 1821–1836.4. Zubkov M.U., Portmester J.A., Bondarenko P.M. Forecast of fractured reservoirs in bazshenovskiy and abalakskiy series adjournmenton the basis of results tectonophysical modeling / Ways of oilandgas potential realization HantyMansiysk Autonomous District /Under red. of V.I. Karasev, E.A. Ahpataev, V.A. Volkov. – KhantyMansiysk, 2002. – P. 244–253.5. Methodical recommendations by definition of calculative parameters of oil and gas deposits based on materials of geophysical researches of wells with attraction of the core analysis results, approbations and tests of productive layers / Ed. by B.U. Wendelstein, V.F.Kozjar, G.G. Jatsenko. – Kalinin: NPO «Souzpromgeophisica»,1990. – P. 261.6. Habarov V.V., Nelepchenko O.M., Pervuhina T.V. Allocation of impenetrable intervals in rocks of bazshenovskiy series of the Salymskoil deposit // Geology of oil and gas. – 1978. – № 8. – P. 15–18.7. Russell B. e.a. Multiattribute seismic analysis // The Leading Edge.– 1997. – V. 5. – № 9. – P. 1439–1443.8. Hampson D.P. e. a. Use of multiattribute transforms to predict logproperties from seismic data // Geophysics. – 2001. – V. 66. – № 1.– P. 220–236.Arrived on 30.06.2006IntroductionIn the process of the global water cycle, its continuous interaction with rocks and movement of huge quantity of the dissolved substances is happening. As a result,never ending transformation of the earth’s crust is realized, and according to «the principle of indissoluble relation of alive and dead», proved by V.I. Vernadsky, andevolution of biosphere [1, 2]. Taking that into account,the hydrochemical drain plays exclusively important role in functioning of biogeocenosis of different levels and,in its turn, reflects the most essential changes in theirstructure and ecologogeochemical condition of waterobjects. The given circumstance allows us to consider theproblem of formation and changes of hydrochemicaldrain as the component of more general problems of interaction of the geospheres, natural and anthropogenousenvironment and climate transitions [3, 4].Many known scientists at various times have beenengaged in studying of this problem, including O.A. Alekin, V.P. Zverev, A. Lerman, A.M. Nikanorov, T. Paches,A.I. Perelman, E.V. Posochov, S.L. Schwarz, and others.Thanks to their works the scales of land denudation andmassstreams sizes of surface and underground hydrosphere at level of planet, continents, catchment basins of oceans and seas had been established. Much hasbeen done in the way of studying of mechanisms of formation of chemical compound of natural waters of thetop hydrodynamical zone. Nevertheless, many questionsconnected with necessity of studying the distribution ofhydrochemical drain inside of large river basins and itsformation in conditions of anthropogenous influence,till now remain unresolved. It essentially limits the opportunity of development of reliable longterm forecastsof quality change in natural waters and developments ofoptimal regional strategy of wildlife management, whichUDC 550.42:57.4(571.1)HYDROCHEMICAL DRAIN IN THE MIDDLE OB RIVER BASIN O.G. SavichevTomsk Polytechnical UniversityEmail: OSavichev@mail.ruResults of studying the hydrochemical drain in Middle Ob basin (Western Siberia) and conditions of its formation are shown. Averagevalues of ejection of the main ions, microelements, organic and biogenic substances with waters of the rivers: Ob, Tom, Chulym, Ket,Тym, Vasyugan, Parabel, Chaya for years 19972000 are established. It is shown, that the main part of hydrochemical drain is represented by the main ions and formed under the influence of mainly natural factors. Anthropogenous transformation of hydrochemical drainshows itself in the increase of hydrocarbons ejection, compounds of nitrogen and some other substances.

Prediction of deposit oil-bearing capacity of the Tutleym series within the Krasnoleninsk arc (the Western Siberia)

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