DOWNHOLE TEMPERATURE CALCULATION

A method is disclosed calculating a value representative of a downhole temperature in a hydrocarbon well. The well comprises production tubing (3) inside outer tubing (4), there being an annulus between the production tubing and the outer tubing, which annulus receives a hydraulic control line (2) s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Ellson, Nicholas Josep
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	A method is disclosed calculating a value representative of a downhole temperature in a hydrocarbon well. The well comprises production tubing (3) inside outer tubing (4), there being an annulus between the production tubing and the outer tubing, which annulus receives a hydraulic control line (2) supplying hydraulic fluid for the control of a downhole device (1). The method comprises sensing the pressure of hydraulic fluid in the control line at the wellhead and using a measurement of that pressure to calculate a value representative of a downhole temperature.