【摘要】：針對三塘湖盆地牛圈湖油田西山窯組油藏巖性橫向變化快,沉積微相控藏明顯的特點,基于油田上產(chǎn)急需精細(xì)沉積微相支持的現(xiàn)狀,綜合運用巖心、錄井、測井、地震、巖石薄片等資料,對牛圈湖油田西山窯Ⅱ砂組沉積微相進行了精細(xì)研究。研究認(rèn)為:牛圈湖油田西山窯Ⅱ砂組主要發(fā)育辮狀河三角洲前緣亞相,次為前辮狀河三角洲亞相。研究區(qū)的南緣較陡,發(fā)育沖積扇、辮狀河三角洲及湖泊等沉積體系,在坡度較緩的北緣發(fā)育辮狀河三角洲直接入湖的沉積體系。通過地震資料、薄片鑒定及重礦物分析,認(rèn)為儲層砂體由南北物源控制,且東區(qū)具有以南部物源為主的特點,而并非前人認(rèn)識的以北部物源為主。在東北、西北和南部劃分出3個優(yōu)勢儲層區(qū),其可作為下一步勘探開發(fā)的目標(biāo)區(qū)。
[Abstract]:The lithology of Xishanyao formation reservoir in Niuquanhu Oilfield in Santanghu Basin is changed rapidly and the sedimentary microfacies control reservoir is obvious. Based on the present situation that the oil field is in urgent need of fine sedimentary microfacies support, the core, logging, logging and earthquake are used synthetically. The sedimentary microfacies of Xishanyao 鈪，

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