塔里木盆地顺托果勒地区北东向走滑断裂带的油气勘探意义

发布时间：2018-05-28 22:03

本文选题：热液溶蚀改造 + 断裂控储　；参考：《石油与天然气地质》2017年05期

【摘要】：古隆起碳酸盐岩风化壳领域是多年来塔里木盆地油气勘探发现的重要领域。近年来,在塔中、塔北古隆起之间的顺托果勒低隆、斜坡区,通过新的地震资料识别出一系列走滑断裂带,且钻井揭示其具有较好的含油气性,相继在顺南、顺托、顺北实现重大油气突破。顺托果勒地区北东向左行走滑断裂带在构造样式上具有"纵向分层变形、深部主滑移带沿走向分段变形"的特征,上奥陶统及其之上的碎屑岩层系多发育雁列式正断层,其下部对应于发育在碳酸盐岩层系的走滑断层主滑移带。受斜列侧接部位局部应力场改变的影响,走滑断裂带深部通常表现为拉分负花状、压隆正花状及平移平直状3类样式。多期活动的系列北东向走滑断裂带形成了规模较大的碳酸盐岩缝洞体系,为后期埋藏溶蚀改造形成规模储层和油气运聚均提供了有利条件,具有明显的"控储、控藏、控富"特征。在这种奥陶系发育较为齐全的低隆斜坡区呈现出沿断裂带大面积富含油气的勘探形势,具有不同于古隆起暴露剥蚀区风化壳领域的油气成藏模式,使得"塔河之外找塔河"成为可能,已初步落实轻质油资源量12×10~8t,将成为中石化塔里木探区"十三五"期间增储建产的主战场。
[Abstract]:Carbonate weathering crust in paleouplift is an important field in exploration and discovery of oil and gas in Tarim Basin for many years. In recent years, a series of strike-slip fault zones have been identified through new seismic data in the low uplift and slope region of Shuntogol between the paleouplift of Tarim and northern Tarim Basin, and the drilling has revealed that they have good oil-bearing and gas-bearing properties and have been successively located in Shunnan and Shuntuo. Major oil and gas breakthroughs were realized in Shunbei. The NNE left strike slip fault zone in Shuntogol area is characterized by "longitudinal stratification deformation and segmental deformation along the strike of deep main slip zone" in the structural style. The upper Ordovician and its upper clastic lithostratigraphic series are characterized by geese normal faults. The lower part corresponds to the main slip zone of strike-slip fault developed in carbonate strata. Due to the change of local stress field in the oblique lateral junction, the deep part of the strike-slip fault zone is usually characterized by three types of patterns: pulling negative flower, pressing positive flower and translational straight. The series of N-E strike-slip faults formed a large scale carbonate fracture and cavity system, which provided favorable conditions for the later burial dissolution transformation to form large-scale reservoirs and oil and gas migration and accumulation, with obvious "reservoir control, and reservoir control." The characteristic of controlling wealth. In this low-uplift slope, where the Ordovician is relatively well developed, there is a large area of oil-gas exploration along the fault zone, which is different from that in the field of weathering crust in the exposed denudation area of the paleouplift. This makes it possible to find the Tarim River outside of the Tahe River, and the light oil resource amount of 12 脳 10 ~ (8) t has been preliminarily implemented, which will become the main battlefield for increasing storage and production during the "13th Five-Year Plan" period of the Tarim exploration area of Sinopec.
【作者单位】：中国石化股份有限公司油田事业部;
【分类号】：P618.13

【相似文献】