Law Of The Jurassic Oil Reservoirs In Tiebiancheng Area Of Jiyuan Oilifeld

Erdos basin since the late Paleozoic era into the mesozioc basin tectonic evolution stage,Jurassic Yanan formation is the main oil-beairng formation of basin. The end of the Triassic,Erdos basin uplifted massively affected by Indosintan movement, The top of YanchangFormation suffered weatheirng and lfuvial erosion effects, the ancient landscape formingwater wide cloth, gully aspect, hilly, under the background of the Jurassic Yanan formationdeposition. The study area is located in the east slope of Jiyuan highland, East Ningshan River,and Dingbian Youfangzhuang oilfield across the irver, with similar ancient landform formingenvironment and Miao Gou，Wang Wa oilifeld, which belongs to Ji Yuangu heights from westto cast to the Ningshan River, an ancient monadnock development complete. In recent years,in the iron edge city block exploration and development of a number of small reservoirs inJurassic, the main position for Yanan group10，extension9and extension of extension of4+5segment. Previous work has considered, because the pre Jurassic palaeogeomorphologycontrols the lower Jurassic Yanan formation in the early sedimentary^sedimentaryenvironment of different inevitably leads to changes in reservoir sand body morphology anddistribution, further affect the formation and distirbution of the oil reservoirs. In the past, ironedge city block degree is not very in-depth study on sedimentary characteirstics, sedimentarycharacteirstics and therefore ifirther research in this area is very necessary for furtherexploration and exploitation. Study on phase unwrapping the stratigraphic division of research,Yanan formation, the distirbution of sand body and reservoir of recourse, the detailed analysisof the pre Jurassic palaeogeomorphology, further explore the ancient landform accumulationeffect on oil and gas, and provide scientific basis for the exploration and development of oiland gas.