中国高分辨率层序地层学的研究现状

由科罗拉多矿业学院Cross教授提出的高分辨率层序地层学是以岩芯、三维露头、测井和高分辨率地震反射剖面资料为基础,运用精细层序划分和对比技术将钻井的一维信息变为三维地层关系,建立区域、油田乃至油藏级储层的成因地层对比格架,对储层、隔层及烃源岩分布进行评价及预测的一种新理论。其基本理论包括基准面原理、体积划分原理、相分异原理与旋回等时对比法则。20世纪90年代中期高分辨率层序地层学理论由邓宏文引入国内,大大地推动了国内高分辨率层序地层学的发展。中国高分辨率层序地层学研究取得的丰硕成果主要表现在:理论上的创新、油气勘探开发应用领域的拓宽和其他方面上的应用等。虽然高分辨率层序地层学仍有许多不足之处,但在陆相层序地层学的研究中,与经典层序地层学相比,它摆脱了海平面变化是层序形成的主控因素这一思想的束缚,从而可以实现对陆相高分辨率层序地层格架的构建,因此它是非常实用的一种新理论。

CURRENT STATUS OF HIGH RESOLUTION SEQUENCE STRATIGRAPHY IN CHINA

The high-resolution sequence stratigraphy represented By T. A. Cross in Clorado School of Mines is a new principle that basing on the data of drilling, outcrop, logging and high resolution seismal section, using fine techniques of sequence partition and comparison to change one-dimension drilling information into three-dimension stratigraphy relationship, it can set up genetic stratugraphy comparison construction, and evaluate and forecast the distribution of reservoirs, cap formation and oil source bed. The high resolution sequence stratigraphy included the principles of stratigraphic base level,volumetric partition.facies differentiation and rule for chronostratigraphic cycle correlation as its theoretical bases.Originally Professor Deng Hongwen introduced it into China. Many scholars paid highly attention to it later. More and more scholars devoted them attention to the study of principle and application, and published many valuable articles that have brought out a great development to the high resolution sequence stratigraphy.The great achievement in it mainly embodied in Innovation of its principles, Application of exploration and development in petroleum and gas, and Application in other aspects. Thought the high resolution sequence stratigraphy has a lot of shortages, compared with classic sequence stratigraphy, it has gotten rid of this view that the sequence formation was mainly controlled by the change of sea level in continental facies, and has set up fine continental facies's sequence stratigraphy construction. So it is a very practical new principle.