Significance of Architectural-element Analysis to Fine Division and Correlation of Reservoir(PDF)
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- Issue:
- 2016年第05期
- Page:
- 649-659
- Research Field:
- 基础地质与矿产地质
- Publishing date:
Info
- Title:
- Significance of Architectural-element Analysis to Fine Division and Correlation of Reservoir
- Author(s):
- CHEN Qing-hua; LI Min
- School of Geosciences, China University of Petroleum, Qingdao 266580, Shandong, China
- Keywords:
- reservoir; subdivision and correlation; stratum structure; architecturalelement analysis; hierarchical interface; isochronism; accuracy; Dongxin oilfield
- PACS:
- P618.130.2+1；TE122.2
- DOI:
- -
- Abstract:
- Problems in the reservoir subdivision and correlation mainly display in two aspects: one is that the comparison results are usually lithologic units, which are often not isochronous; another one is that the accuracy of comparison result is not enough, which can not meet the needs of tapping the remaining oil in high water cut stage. The basic reasons are the limitation of the understanding of layer, stratum and the reservoir structures. Based on the traditional stratigraphic theories, the reservoir subdivision and correlation show that the layer and stratum structures accord with the “layer” mode, the layer distributes over the whole area, closing to the level and paralleling to each other, and the layers are stacked horizontally. However, the sequence stratigraphy, which breaks through the understanding of traditional stratigraphy, believes that the layer does not distribute over the whole area necessarily, not close to the level necessarily and not parallel to each other necessarily. The spatial position of layer varies greatly, and the superimposed relationships between layers can be overlap or offlap. Architecturalelement analysis is more detailed to reveal the structural characteristics of the reservoir. The layer divided originally is a complex, which should be further divided hierarchically. Based on hierarchical interface division, the complex can be subdivided into a series of architecture units with different shapes and complex distribution. Beginning with the basic reason of problems, the corresponding countermeasure is proposed that taking the theories of sedimentology, sequence stratigraphy and seismic stratigraphy as guidance, the hierarchical interfaces are divided by the means of architecturalelement analysis.
Last Update: 2016-09-30