Abstract
Abstract By core observation and slice analysis, two types of fractures can be identified in reservoirs of Zanarol Oilfield, including macro-fractures and micro-fractures. Macro-fractures refer to tectonic fractures and stylolites, and micro-fractures mainly refer to grain breakage fractures and micro-tectonic fractures. The development of the different scale fractures is controlled by lithology, formation texture and stress field. Macro-fractures are well developed in tight rocks such as micrite and micro-fractures are well developed in granular carbonate rocks of good porosity and permeability. The Zanarol Oilfield is a typical layered pool, with interbeds of granular carbonates and tight carbonates, and this texture controls the vertical distribution of macro-fractures and micro-fractures. Macro-fractures in the ? layer are well developed due to its tight reservoir, and micro-fractures are well developed in the ? layer because of its loose reservoir. The planar distribution of the fractures is controlled by principal stress, and fractures are well developed in zones with high principal stress.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
