鄂尔多斯盆地致密油的定义
发布时间：2019-07-08 16:57
【摘要】：致密油是继页岩气之后全球非常规油气勘探开发的又一新热点,被中国石油界广泛关注,但目前对致密油的定义还存在诸多分歧。基于鄂尔多斯盆地延长组致密油特征分析,从致密储层物性、可动流体等方面对致密油定义进行深入研究,综合勘探开发成果确定延长组致密油渗透率界限,进而探讨致密油的定义标准。研究结果表明,鄂尔多斯盆地延长组致密油成藏条件良好,主力层系为长6、长7、长8及长9油层组,盆地中部及南部深湖相沉积发育区是最有利的致密油勘探区。综合分析测井、物性、可动流体、主流喉道半径、启动压力梯度、原油粘度、压力系数以及试油试采等资料,提出利用致密油储层六参数法对鄂尔多斯盆地延长组储层分类标准进行调整,将延长组致密油渗透率界定为小于0.5×10~(-3)μm~2,主要包括致密砂岩油和页岩油。其他盆地或油田应结合实际地质特征及勘探开发实践对致密油进行定义。
[Abstract]:Tight oil is another new hot spot in unconventional oil and gas exploration and development in the world after shale gas, which has been widely concerned by the Chinese oil industry, but there are still many differences in the definition of tight oil. Based on the analysis of tight oil characteristics of Yanchang formation in Ordos Basin, the definition of tight oil is deeply studied from the aspects of tight reservoir physical properties and movable fluid. The permeability limit of tight oil of Yanchang formation is determined by comprehensive exploration and development results, and then the definition standard of tight oil is discussed. The results show that the tight oil accumulation conditions of Yanchang formation in Ordos Basin are good, and the main strata are Chang 6, Chang 7, Chang 8 and Chang 9. The sedimentary development area of deep lacustrine in the middle and south of the basin is the most favorable tight oil exploration area. Based on the comprehensive analysis of logging, physical properties, movable fluid, mainstream throat radius, starting pressure gradient, crude oil viscosity, pressure coefficient and oil test and production test, it is proposed to adjust the reservoir classification standard of Yanchang formation in Ordos Basin by using the six-parameter method of tight oil reservoir. The tight oil permeability of Yanchang formation is defined as less than 0.5 脳 10 ~ (- 3) 渭 m 鈮，
本文编号：2511739
[Abstract]:Tight oil is another new hot spot in unconventional oil and gas exploration and development in the world after shale gas, which has been widely concerned by the Chinese oil industry, but there are still many differences in the definition of tight oil. Based on the analysis of tight oil characteristics of Yanchang formation in Ordos Basin, the definition of tight oil is deeply studied from the aspects of tight reservoir physical properties and movable fluid. The permeability limit of tight oil of Yanchang formation is determined by comprehensive exploration and development results, and then the definition standard of tight oil is discussed. The results show that the tight oil accumulation conditions of Yanchang formation in Ordos Basin are good, and the main strata are Chang 6, Chang 7, Chang 8 and Chang 9. The sedimentary development area of deep lacustrine in the middle and south of the basin is the most favorable tight oil exploration area. Based on the comprehensive analysis of logging, physical properties, movable fluid, mainstream throat radius, starting pressure gradient, crude oil viscosity, pressure coefficient and oil test and production test, it is proposed to adjust the reservoir classification standard of Yanchang formation in Ordos Basin by using the six-parameter method of tight oil reservoir. The tight oil permeability of Yanchang formation is defined as less than 0.5 脳 10 ~ (- 3) 渭 m 鈮，
本文编号：2511739
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