详细信息   

• 责任者：Yang Mian )Geosciences College of Daqing Petroleum University ; Daqing 163318 ; China) ; Fu Guang
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2010
• 卷期：29(3)
• 关键词：低渗透储集层 ; 裂隙 ; 松辽平原
• 页码：p.22-24
• 图表：illus., 1 table, 10 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

摘要

Groups and series of structural fractures developed in low-permeability reservoirs seriously influence the flow and distribution of oil and gas, the accurate prediction of their development directions is always the key point and difficulty for studies on physical properties of this kind of reservoirs. Unfortunately the above macro-forecasting is just based on well points at present. By adopting the method of integrating the finite-element numerical simulation results of structural stress field with the mechanical mechanism of fracture development, this paper proposes a set of qualitative prediction workflow for the development direction of structural fractures in low-permeability reservoirs, and moreover the above prediction results can qualitatively determine the structural fracture ＇ s development direction of any part in the target region. With the help of the above method, the structural tension fractures＇development directions of Yingcheng Formation in Palaeo-central uplift belt of deep horizons in Songliao Basin have been predicted, the calculation results are highly coincident with those of the image logging interpretation of exploration well points, both relative errors are less than 10%, showing much better results; the distribution of structural fractures generated in Yingcheng Formation mainly locates between 800 and 1 200-the principal direction of natural gas flow, so the above understandings should be mainly considered in gas reservoir development program designs and well arrangement.