The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS
Transactions ID Number: 53-646
Full Name: Sadegh Torfi
Position: Assistant
Professor
Age: ON
Sex: Male
Address: No 14, Shahid Amale St
Country: IRAN
Tel: +989169417762
Tel prefix:
Fax: +986124222324
E-mail address: st@siau.ac.ir
Other E-mails: storfi@gmail.com
Title of the Paper: Optimization of WOB and rotary speed: A Case Study
Authors as they appear in the Paper: Eisa Novieri, Sadegh Torfi
Email addresses of all the authors: storfi@gmail.com
Number of paper pages: 10
Abstract: The usual objective when drilling a well is to drill for the lowest overall cost. At first sight, this may seem like a requirement to drill as fast as possible, since many of the costs, such as the rig day rate, wages etc., are time dependent. However, some costs are fixed, for example the cost of the bit, and it may not always be economic to pay a very high cost for a bit that drills somewhat faster, particularly if the other costs are low. In this paper, some first 3465 feet of a reservoir lithology including four bit runs are analyzed so that factors affecting rate of penetration (ROP) are optimized and the lowest possible well cost is achieved. The effects of using other bit types, weight on bit, rotary speed and bit hydraulics are simulated in an attempt to determine the optimized parameters, which result in the lowest drilling cost. Simulation is a powerful tool to enhance drilling performance and thereby reducing total drilling cost. In this study, by reduci!
ng both nozzle sizes and mud flow rate, the horse power dissipated at the bit is increased, hence reducing cost per foot of drilled interval. As it is noted, by using this simulator, 17% of the original well cost is saved, which is a considerable amount of money.
Keywords: Bit Run, Drilling Cost, Optimization, ROP, Weight on bit
EXTENSION of the file: .doc
Special (Invited) Session: Numerical Methods in Mechanics
Organizer of the Session:
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