岩溶残丘精细刻画及控储特征分析——以塔里木盆地轮古地区奥陶系风化壳岩溶储集层为例

发布时间：2018-01-20 14:22

  本文关键词： 塔里木盆地 轮古地区 奥陶系 鹰山组 风化壳岩溶 岩溶残丘 控储特征　出处：《石油勘探与开发》2017年05期 　论文类型：期刊论文

【摘要】：基于塔里木盆地轮古地区奥陶系鹰山组风化壳岩溶古地貌精细刻画,对岩溶残丘规模、数量及控储特征进行了量化研究。首先应用"印模法"及残丘体积计算公式,刻画了各级岩溶微地貌,对岩溶残丘的数量、相对幅度、面积、体积等参数进行定量评价,分析残丘不同部位储集层发育情况。轮古地区风化壳岩溶高差范围约140~160 m,厚度由岩溶高地向斜坡和阶地减小;共识别出各类残丘252个,Ⅰ、Ⅱ类残丘虽数量较少,但总体体积大,为有利的储集层发育区;残丘与现今构造高点重合率高(96.42%),后期构造运动基本未改变残丘形态,具备良好的成藏条件;岩溶残丘主体部位洞穴型、裂缝孔洞型、孔洞型和裂缝型储集层均有发育,且优质储集层发育厚度较大,各项储集层参数优于残丘翼部,残丘相对幅度与单井产量具正相关性,残丘规模和部位与产量关系密切。
[Abstract]:Based on the fine description of karst paleogeomorphology in weathering crust of Ordovician Yingshan formation in Luangu area of Tarim Basin, the scale of karst residual hills is studied. Quantitative study on quantity and reservoir control characteristics is carried out. Firstly, the number, relative amplitude and area of karst residual mound are described by using the "impression method" and the calculation formula of residual mound volume. The volume and other parameters were quantitatively evaluated to analyze the reservoir development in different parts of the remnant mound. The Karst height difference of weathering crust in Lungu area was about 140 ~ 160 m and the thickness decreased from karst high ground to slope and terrace. A total of 252 mounds of various types were identified. Although the number of type 鈪，

本文编号：1448507