摘要
辽河西部凹陷清水洼陷油气资源丰富,沙一段发育构造一岩性、岩性油气藏。清水洼陷沙一段处在洼陷中心部位,储层具有单砂层薄、砂泥岩互层的特点,给储层预测带来了困难;同时该区油水关系复杂,如何准确确定含油气边界是勘探面临的一大难题。针对该区岩性油气藏勘探存在的难点,首先开展精细构造解释,建立高精度层序地层格架;然后在高精度层序格架的控制下利用振幅及频率属性开展薄互层储层预测;最后利用"低频共振、高频衰减"的叠后烃类检测原理预测了该区的含油气范围。在此基础上部署的探井洼115、洼128井取得了非常好的效果,且上报了控制石油地质储量。
The discoveries in the hydrocarbon exploration in Member S1, Qingshui Sag, Western Liaohe Basin demonstrate a great potential. The Member S1 located in the center of Qingshui Sag is structural-lithologic and lithlogic beds, and characterized by thin inter-beds, which leads difficulties for reservoir predication. At same time, it is difficult to distinguish hydrocarbon boundaries from water boundaries due to complex water-oil relationship.To overcome the difficulties, we carry out reservoir prediction with the following steps. Firstly, a highprecision sequence stratigraphic framework is established with fine structural interpretation. Then based on this stratigraphic framework, inter-bed reservoirs are predicted with amplitude and frequency attributes. Finally, an oil-bearing area is depicted with the principle of poststack hydrocarbon detection. The Wells W 115 and W 128 proposed by our research have achieved excellent success with good new discovery.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2017年第A01期146-151,共6页
Oil Geophysical Prospecting
关键词
清水洼陷
岩性油气藏
高精度层序
属性
烃类检测
Qingshui Sag
lithologic reservoir
high-precision sequence
attribute
hydrocarbon detection
