文章基本信息

标题：A mathematical model for safety assessment of crawler logging:
本地全文：下载
作者：Biwei Fu ; Zhijiu Ai ; Haifeng Ma 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2017
卷号：9
期号：12
页码：1-8
DOI：10.1177/1687814017737258
语种：English
出版社：Sage Publications Ltd.
摘要：Horizontal well production technology is an increasingly important method to improve oil recovery. However, with the intensification of oil production, the problem of high water content in horizontal wells becomes more serious and causes oil recovery to rapidly reduce. The technique of water searching with a crawler can ensure that water searching and well production works are conducted simultaneously. The application of this technique achieves good economic and environ?mental outcomes. But in order to ensure the water searching system within the crawler is safe and reliable, mathemati?cal models of the ground cable tension and the head tension of the crawler need to be established. These models are calculated and appraised on the basis of the engineering case, and it is gained that theoretical calculation results are in agreement with test results. Furthermore, the free fall limit depth of the crawler obtained by our theoretical calculation is in agreement with the test result. The study results show that the mathematical models can accurately predict ground cable tension and head tension of the crawler and are important to reduce the risks of the well logging as well as improve the success rate of water locating.
关键词：Horizontal well; water searching; tractor; ground cable tension; mathematical model