Review on Palaeomorphologic Reconstruction Methods in Oil and Gas Fields(PDF)
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- Issue:
- 2017年第04期
- Page:
- 516-529
- Research Field:
- 基础地质与矿产地质
- Publishing date:
Info
- Title:
- Review on Palaeomorphologic Reconstruction Methods in Oil and Gas Fields
- Author(s):
- ZHAO Yong-gang; WANG Dong-xu; FENG Qiang-han; ZHANG Dong-liang; WANG Shao-fei; FENG Yong-jiu; FU Xiao-yan; NAN Xi-xiang
- 1. School of Earth Sciences and Engineering, Xi’an Shiyou University, Xi’an 710065, Shaanxi, China; 2. Research Institute of Exploration and Development, Changqing Oilfield Company, PetroChina, Xi’an 710018, Shaanxi, China; 3. National Engineering Laboratory for Exploration and Development of Low-permeability Oil and Gas Fields, Xi’an 710018, Shaanxi, China
- Keywords:
- palaeomorphology; reconstruction method; sedimentology; high resolution sequence stratigraphy; well area scale; depositional stage; oil and gas fields
- PACS:
- P931；P531
- DOI:
- -
- Abstract:
- At present, the paleogeomorphology has been widely used in many subjects and their application fields. Paleogeomorphologic reconstruction has close relations with exploration and development of oil and gas fields. With the rapid development of petroleum industry, the study on palaeomorphologic reconstruction methods has relatively obvious progresses in oil and gas fields. These representative new palaeomorphologic reconstruction methods in recent years were analyzed, and the main research progresses in oil and gas fields of China were summarized. ①The theoretical basis of palaeomorphologic reconstruction methods is diversified. Firstly, the key of sedimentology paleogeomorphic reconstruction method is the comprehensive study on paleostructure, paleo-drainage-system, paleocurrent direction, sedimentary facies, etc.; secondly, the core thought of high resolution sequence stratigraphy reconstruction method is to reflect the palaeogeomorphic form of pre-depositional stage by means of base-level cycle correlation based on the combination of base-level and maximum flood flooding surface; thirdly, the karst microtopography reconstruction method of well area scale has an obvious advantage, which is that the conceptual model of three-level paleogeomorphology could guide fine characterization of microtopography; fourthly, the main principle of carbonate rock microtopography reconstruction method on the depositional stage is chosing the isochronous geologic body, confirming platform shoal exposed time and effectively reconstructing microtopography of exposed shoal by means of grainstone gross-thickness. ②The practicability of palaeomorphologic reconstruction methods is better and better. Examples of application in Ordos Basin, Bohai Bay Basin, Tarim Basin and Sichuan Basin illustrate that they can provide an important support for the reservoir prediction and favorable area optimization, while the ways of quantitative research are relatively poor. These methods still have broad application prospects in oil and gas fields. ③Complementary advantages exist among palaeomorphologic reconstruction methods, while they have a trend to comprehensive research. Sedimentary paleogeomorphic reconstruction method is one of relatively mature methods in its application field at present; the research work of high resolution sequence stratigraphy reconstruction method is yet at its beginning stage; karst microtopography reconstruction method of well area scale is well applied to the carbonate platform of tidal flat development; carbonate rock microtopography reconstruction method is appropriate for the carbonate platform with the development of beach body. The comprehensive study of different reconstruction methods is an inevitable trend for palaeomorphologic reconstruction in oil and gas fields.
Last Update: 2017-07-28