History Of Production Logging Into Four Periods

1022 WordsMay 1, 20175 Pages
(Ding Z. X. 1992) divided the history of production logging into four periods in which each period is characterized by new and different tools and interpretation. The first period (late 1930 to late 1940s):- in this period temperature sensors were used to locate fluid entries in wellbore. The interpretation was qualitative. Second period (late 1940s to mid 1960s):- Different flowmeter and pressure measurements were added to temperature tools in order to detect different type of fluid produced or injected. He also argued the objective or applications of production logging tool also said that the PLT can be used in all stages through the life of a well. In initial completions. Natural production wells secondary recovery production wells and…show more content…
Such as permeability, litho logy and skin damage. Measuring flow rate and pressure immediately above a producing zone not only reduces wellbore storage effects but also makes it practical to run transient tests without shutting in a well and hating production. According to Caivin kessier and (Gray Frisch, 1998) (1995) in recent years a new generation of well logging tool string developed which is better than the older type of the tool. This new sensors reports to the full cross sectional area of the production toolbars (casing, tubing or slotted liner) occupied by gas and liquid. From this response, the holdup fractions for liquid and gas can be determined. The fullbore measurement eliminates previous uncertainties in holdup fraction that can occur when flowing conditions are none uniform or when water cut is high. Single-pass interpretation is the most straightforward but slightest dependable strategy for spinner interpretation which utilizes a single logging run and depends on a direct spinner reaction to aggregate stream rate. With this technique, the highest spinner reaction (most importantly holes) is as-marked 100% in-stream and the least spinner reaction is thought to be in static liquid and in this way is allocated 0% in-stream. Anytime in the middle of, the in-flow rate is expected relative to spinner reaction. Improvement of the multiple array
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