RESEARCH ARTICLE
Study of the Critical Collapse Cave Span for Fracture-cavity Oil Storage Karst Caves
Chao Wang*, Qiangyong Zhang, Yue Zhang
Article Information
Identifiers and Pagination:
Year: 2016Volume: 10
First Page: 877
Last Page: 882
Publisher ID: TOCIEJ-10-877
DOI: 10.2174/1874149501610010877
Article History:
Received Date: 05/03/2016Revision Received Date: 06/09/2016
Acceptance Date: 26/10/2016
Electronic publication date: 29/12/2016
Collection year: 2016
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
As the major field in petroleum reserve growth, fractured-vuggy reservoir is the key research in the future. However, in the development of fracture-cavity reservoir, collapse may occur in karst cave which greatly affects the oil well output. In order to forecast the cave collapse before drilling, this work adopts the method of span dichotomy reduction to determine the critical karst collapse of the fracture-cavity reservoir cave on the background of Tahe Oilfield’s fractured-vuggy reservoir. Different factors which influence on the tunnel span of karst collapse and the failure modes of collapsed cave are obtained by great amounts of numerical calculation and analysis on working conditions. Research results in this work provide significant theoretical evidence to the oil exploration in Tahe Oilfield’s fracture-cavity reservoir.