Experimental evaluation of control fluid fallback during off-bottom well control in vertical and deviated wells

详细信息    Experimental evaluation of control fluid fallback during off-bottom well control in vertical and deviated wells

• 出版日期：2002.
• 页数：99 p. :
• 第一责任说明：Fernando Sebastian Flores-Avila.
• 分类号：a664.5
• ISBN：0493635769(ebk.) :

MARC全文

02h0025949 20111121164457.0 cr un||||||||| 111121s2002 xx ||||f|||d||||||||eng | AAI3049200 0493635769(ebk.) : CNY371.35 NGL NGL NGL a664.5 Flores-Avila, Fernando Sebastian. Experimental evaluation of control fluid fallback during off-bottom well control in vertical and deviated wells [electronic resource] / Fernando Sebastian Flores-Avila. 2002. 99 p. : digital, PDF file. Source: Dissertation Abstracts International, Volume: 63-04, Section: B, page: 2036. ; Director: John Rogers Smith. Thesis (Ph.D.)--Louisiana State University and Agricultural & Mechanical College, 2002. Includes bibliographical references. This study measured the liquid fallback during simulated blowout conditions. The purpose of the study was to establish a basis for developing a procedure for controlling blowouts that relies on the accumulation of liquid kill fluid injected while the well continues to flow. The results from experiments performed with air, water, 10.5 ppg and 12.0 ppg mud in an experimental 48 ft flow loop at 0°, 20°, 40°, 60° and 75° deviation angles from the vertical, as well as results from full-scale experiments performed with natural gas and water based drilling fluid in a vertical 2787-foot deep research well, are presented. The results show that the critical velocity that prevents control fluid accumulation can be predicted by Turner's model of terminal velocity based on the liquid droplet theory by also considering the flow regime of the continuous phase when evaluating the drag coefficient, and the angle of deviation from the vertical. Similarly, the amount of liquid that flows countercurrent into and accumulates in the well can be predicted based on the concept of zero net liquid flow (ZNLF) holdup. Finally all these concepts are integrated in the dynamic kill procedure, which is based on system performance analysis to better predict the feasibility of an off-bottom dynamic kill. Oil wells Blowouts. Electronic books. aeBook. aCN bNGL http://proquest.calis.edu.cn/umi/detail_usmark.jsp?searchword=pub_number%3DAAI3049200&singlesearch=no&channelid=%CF%B8%C0%C0&record=1 NGL Bs1055 rCNY371.35 ; h1 bs1108