Consortium Alumni Association Presents A One-day Course on PDF
Preview Consortium Alumni Association Presents A One-day Course on
Consortium Alumni Association Presents A One-day Course on BBaassiicc WWeellll LLooggggiinngg DDeessiiggnn CCoooorrddiinnaatteedd BByy SSiiggiitt SSuuttiiyyoonnoo UUnnooccaall IInnddoonneessiiaa CCoommppaannyy AAggeennddaa • Introduction (8:15) • Lecture‐I Basic Theory/Interpretation • Break (10 – 10:15) • Lecture‐II Logging Program/Design • Break (12:00) • Workshop (1:30 – 4:00) • Wrap‐up (4:00 – 5:00) OObbjjeeccttiivveess Get to know various log measurements ♦ Recognize fluid type and lithology of major reservoirs, ♦ and some practical application of log data Familiarize with factors affecting the log response ♦ Understand the strategy in well evaluation ♦ Get to know various approaches to well logging design ♦ Exercise with well log design ♦ DDeeffiinniittiioonn According to 4th Edition of J.A.Jackson’s Glossary of Geology: Log : A continuous record as a function of depth, usually graphic and plotted to scale on a narrow paper strip, of observations made on the rocks and fluids of the geologic section exposed in the well-bore. Wireline Logging Logging while Drilling Mud in Mud out Cable LWD Tools Tools Drill Bit WWeellll LLooggggiinngg HHiissttoorryy • The first electrical log was introduced in 1927 in France using stationed resistivity method. • The first commercial electrical resistivity tool in 1929 was used in Venezuela, USA and Indonesia. • SP was run along with resistivity first time in 1931 • Schlumberger developed the first continuous recording in 1931 • GR and Neutron logs was started in 1941 • Microresistivity array dipmeter and lateralog were first time introduced in 1950’s • The first induction tool was used in 1956 followed by Formation tester in 1957, Fomation Density in 1960’s, Electromagnetic tool in 1978 and most of Imaging logs were developed in 1980’s • Advanced formation tester was commercialized in early 1990’s Well in Pechelbronn - France Surface Recording Instrument The “First” Log recorded in 1927 LLoogg MMeeaassuurreemmeennttss Practical definition of a log Log is an indirect measurement of formation properties exposed by the well‐bore acquired by lowering a device or a combination of devices in the well bore. A Formation Evaluation Specialist is essential to understand The theory of measurements, quality control, interpretation principles, geophysics and petroleum geology as well as petroleum reservoirs AAddvvaannttaaggeess aanndd LLiimmiittaattiioonnss ooff WWeellll LLooggggiinngg Advantages: - Continuous measurements - Easy and quick to work with - Short time acquisition - Better resolution than seismic data - Economical Limitations: - Indirect measurements - Limited by tool specification - Affected by environment - Varying resolution BBaassiicc TThheeoorryy ooff MMeeaassuurreemmeennttss
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