Economic and statistical analysis of time limitations for spotting fluids and fishing operations

Conference · Tue May 01 00:00:00 EDT 1984 · Proc., Annu. Offshore Technol. Conf.; (United States)

OSTI ID:6389749

Keller, P S; Brinkmann, P E; Taneja, P K

This paper reviews the statistics of ''Spotting Fluids'' to free stuck drill pipe as well as the economics and statistics of drill string fishing operations. Data were taken from Mobil Oil Exploration and Producing Southeast Inc.'s (MOEPSI) records from 1970-1981. Only those events which occur after a drill string becomes stuck are discussed. The data collected were categorized as Directional Wells and Straight Wells. Bar diagrams are presented to show the Success Ratio vs. Soaking Time for each of the two categories. An analysis was made to identify the elapsed time limit to place the spotting fluid for maximum probability of success. Also determined was the statistical minimum soaking time and the maximum soaking time. For determining the time limit for fishing operations, the following criteria were used: 1. The Risked ''Economic Breakeven Analysis'' concept was developed based on the work of Harrison. 2. Statistical Probability of Success based on MOEPSI's records from 1970-1981.

• Research Organization: Mobil Oil E and P Southeast Inc.
• OSTI ID: 6389749
• Report Number(s): CONF-8405208-
• Journal Information: Proc., Annu. Offshore Technol. Conf.; (United States), Vol. 3; Conference: 16. annual offshore technology conference, Houston, TX, USA, 7 May 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DRILL BITS
HOISTING
LUBRICATION
DRILL PIPES
DIAGRAMS
DIRECTIONAL DRILLING
ECONOMIC ANALYSIS
LUBRICANTS
OIL WELLS
PROBABILITY
STATISTICS
TIME DEPENDENCE
DRILLING
DRILLING EQUIPMENT
ECONOMICS
EQUIPMENT
MATERIALS HANDLING
MATHEMATICS
PIPES
WELLS
020300* - Petroleum- Drilling & Production