APPARATUS AND METHOD FOR EVALUATING STRATUM

PROBLEM TO BE SOLVED: To provide a technology of performing underground stratum evaluation by means of a downhole device arranged at a well shaft that penetrates an underground stratum. SOLUTION: There is provided a viscometer-densimeter for the downhole device arranged at the well shaft that penetr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HSU KAI, FRELS MICHAEL W, GOODWIN ANTHONY R H
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a technology of performing underground stratum evaluation by means of a downhole device arranged at a well shaft that penetrates an underground stratum. SOLUTION: There is provided a viscometer-densimeter for the downhole device arranged at the well shaft that penetrates the underground stratum. The stratum includes at least one fluid. The downhole device conveys at least part of a fluid to the viscometer-densimeter which is formed of a sensor unit and at least one magnet. The sensor unit can be arranged in the downhole device, and formed of at least two spatially arranged connectors, and a wire. The wire is strained between the at least two connectors so that the viscometer-densimeter is arranged in the downhole device, and applicable to interaction with respect to the fluid when the downhole device is arranged in the underground stratum to receive the fluid from the underground stratum. Herein the connectors and the wire form a frequency oscillator. COPYRIGHT: (C)2006,JPO&NCIPI