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IJSTR >> Volume 2- Issue 1, January 2013 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Sequence Stratigraphic For III Member In San-Gonghe Formation (Early Jurassic), Baolang Oil-Field, Yanqi Basin. Northwest China

[Full Text]



Fahd A. Q. Al-qaraafi, Yao Guangqing



Index Terms:-Baobei Anticline, Baobei District , Baolang Oilfield, Sangonghe Formation, Sequence stratigraphic, III member , Yanqi Basin.



Abstract:- Problem statement . The Yanqi Basin is located in the xinjaing district NW of China, Sangonghe formation (Early Jurassic) consists mainly of several layers which are characterized by a complex geological landscape. The aim of the research is the characterization of sand Sequence stratigraphic for III member in Sangonghe Formation .Method Through create thickness maps which are essentially information well logs with data well , and using petrel software was introduced information for a number 124 wells in the study area and by identifying the limits of sand vertical (top and base) per lithology unit In each well, then investigate a correlation between these wells and then build maps sand thickness of the III member part in Sangonghe Formation. Result determines the five layers of small sand which clearly show the well logs curves return to main classes sand layers III1 and III2 that make up this part of the sangonghe formation. Characterized layer III11 continuity good cover most of the study area and up to a maximum thickness of have to 32 m. Also layer III12 covers most of the study area up to a maximum thickness of have to 48 m while the layer III13 is composed of two parts of the first located in the north of the study area and up thickness to 32 m and the second part in the south have a maximum thickness of 20 m, up to a maximum thickness III21 to 26 m also III22. Overall, All layers of sand accounts for 90% of the total content of classes that make up the third part of the composition of sangonghe formtion. the difference rapid levels thickness caused by the presence of a series of faults affected the structure of synthetic layers. That a gradual decrease in the thickness of the layers of sand and down the thickness to zero or nearly it suggests that the direction of flow of the river will be mainly from the northeast toward the southwest.



[1]. AIMING LIN , BIHONG Fu, KEN-ICHI KANO , TADASHI MARUYAMA, JIANMING GUO ; Late Quaternary right-lateral displacement along ac-tive faults in the Yanqi Basin, southeastern Tian Shan, northwest China; Tectonophysics 2002,354 :157 178.

[2]. ALEXANDER, I& LEEDER, INI. R. Active tectonic controls on alluvial architecture.In: EHTHRIDGE, F. D., FLORES, R. M. & HARVEY, M. D. (eds).Recent Developments in Fluvial Sedimentology. The Society of Economic Paleontologists and Mineralogists, Special Publication,Tusla. 1987.39,243-252.

[3]. ASHWORTH, P. J., BEST, J. L, PEAKALL, J. & LORSONG, J. A.. The influence of graduation rate on braided alluvial architecture: field study and physical scale modelling of the Ashburton River gravels, Canterbury Plains, New Zealand. In: SMITH, N. D. & ROGERS, J. (eds. ) Fluvial Sedimentology VI, Special Publication of International Association of Sedimcntologists, Blackwells,1999, 28,333-346.

[4]. BENTHAM, P. A., TALLING, P. I BUR BANK, D. W.Braided stream and flood-plain deposition in a rapidly aggradation basin: the Escanilla formation, Spainish Pyrenees. In: BEST, J. L& BRISTOW, C. S. (eds. ) Braided Rivers, Geological Society Special Publication,1993. 75,177-194.

[5]. BRIDGE. J. S. & MACKEY, S. D.. Three-dimensional model of alluvial stratigraphy: theory and application. Journal of Sedimentary Research, 1993 B65,7-3.- BRYANT, M., FALK, P. & PAOLA, C.. Experimental study of avulsion frequency and rate of deposition. Geology, 1995,23,365-368.

[6]. FIELD, J. Channel avulsion on alluvial fans in southern Arizona. Geomorphology, 2001. 3 7,93-104.

[7]. GAWTHORPE, R. L, COLLIER, R. E. LL, ALEX-ANDER, J., BRIDGE, J. S., & LEEDER.M . R..Ground penetratin gradar.a pplicationt of sandbody geometrya nd heterogeneitys tudies.I n: NORTH, C. P. & PROSSERD, . J. (eds). Characterization o f Fluvial and Aeolian Rcsenvirs, Geological Society Special Publication,1993, 73,421-432.

[8]. GERMANOSKI, D. & SCHMMI, S.A.. Changes in Braided river morphology resulting from aggradation and degradation. The Journal of Geology, 1993, 101,451-466.

[9]. QUAN YANGWANG, Yao GUANGQING; DONG-XIAOXIA;ZHOUFENG DE; LIU; HUANGZHENG; Genetic type and Structure pattern of the interlayer inside thick sandbody of Baobei block in Yanqi basin, Petroleum Geology and Engineering, 2007,21(2):9-12.

[10]. HELLER, P. L. & PAOLA, C. Downstream changes in alluvial architecture: An Exploration of controls on channel-stacking patterns. Journal of Sedimentary Research,1996,66,297-306

[11]. H.NAAN, X. CHEN, Y.BAI, Analysis of sources of Jurassic sediments in southern sag of Yanqi basin [J]. Henan Petroleum 2005. 19 (4) : 4-5
[12]. KOSS,J . E, ETHRIDGE, F. G. & SCHUMM, S. A.-.An experimental study of the effects or base-level change on fluvial, coastal and shelf systems. Journal of Sedimentary Research. 1994,B64,90-98.

[13]. KRAUS, M. J. & MIDDLETON, L T.. Contrasting architecture of two alluvial suites in different structural setting& In. ETHERIDGE, F. G., FLORES, R. M. &HARVEY, M. D. (eds.) Recent Developments in Fluvial Sedimentology, Society of Economic Paleontologists Paleontologists and Minerologists Special Publications, 1987,39,253-262.

[14]. LEEDER. M. & STEWART, Nt. D..Fluvial incision and sequences stratigraphy: alluvial responses to relative sea level fall and their detection in the geological record. In:HESSELBO. S. P. & PARKINSON, D. N. (eds. ) Sequence Stratigraphy in British geology. Geological Society Special Publi-cation, 1996,103,25-39.

[15]. LIU BIN ,HUANG ZHENG ,SUN SHANG-RU,LONG GUO-QING .The Relationship of De-positional microfecies to petroleum productivity of sangonghe formation in baobei distract of yanqi basin .XJPG,2001,22(6):499-500.

[16]. LEDDY. J. O.. ASHWORTH, PJ.. and BEST. J. L. Mechanisms of anabranch avulsion within gravd-bed braided rivers: observations from a scaled physical model,In-.B EST.J .L& BRISTOW,C .S. (eds). Braided Rivers,Geological Society of London Special Publication,1993. 75,119-127.

[17]. MIALI, A. D.. Alluvial Sedimentary Basins: Tectonic Setting and Sedimentary Architecture.In. MIALI, A. D. (ed) Sedimantation and Tcctonics in Alluvial Basins, Geological Association of Canada Special paper. 198123.1-33.

[18]. PEAKALL, J..Axial river evolution in response to half-graben faulting: Carson River, Nevada, U.S.A. Journal of SedimentaryR esearch ,1998, 8,788-799.

[19]. SHUSTER, M. W. & STEIDTMANN, J. R.. Fluvial-sandstone architecture and thrust-induced subsidence, northern Green River basin, Wyoming. In: ETHERIDGE, F.G., FLORES, R. M. & HARVEY, M. D. (eds. ) Recent Developments in Fluvial Se-dimentology, Society of Economic Paleontologists and Minerologists Special Publications, 1987,39,279-285.

[20]. S. WUU, Z. JIN K, C. HUANG, Reservoir Modeling. Beijing. Petroleum Industry Press, 1999.

[21]. SBXUAR, Catalogue of the earthquakes in Tianshan area. Inland Earthquake Inland Earthquake 1997. 11: p. 1 180.