Institut Francais Du Pe'trole

G&eacute;rard Moracchini

Pascal Mougin

Philippe Ungerer

Roxane Peumery

Jos&eacute; Sanchez

Fluid sampling device comprising a sampling cell ( ) provided with a thermal control valve having a plug ( ) made from a solid low-melting temperature material that is made permeable to the fluid by temporary heating. The device comprises an intermediate cell ( ) with a central channel ( ) provided with a plug made from the solid material, which communicates an inlet with a first end and an outlet with the opposite end, and suited to tightly fit into the inlet hole of the sampling cell, a device ( ) for connecting the two cells ( ) to each other and an element ( ) associated with a seal ( ) for connecting, at the inlet of intermediate cell ( ), a linking tube ( ) to a reactor ( ) producing the fluid to be sampled.

Fluid sampling device comprising a thermal control valve

The invention is a method for determining the Joule-Thomson coefficient of a fluid, expressing the temperature variation in relation to a pressure variation thereof. The fluid is injected at a determined injection temperature into a thin tube (,) (preferably a capillary tube in order to obtain a high pressure drop with reasonable flow rates) which contains a temperature detector (TC,) leading to a pressure drop for the fluid. The temperature variation of the fluid in relation to the injection temperature is measured by means of this temperature detector. The pressure drop undergone by the fluid in tube (,), due to the presence of this temperature detector, is also measured and the Joule-Thomson coefficient is calculated by combination of measurements of the pressure drop and of the temperature variation of the fluid. The method can be applied notably in the field of hydrocarbon production, more particularly hydrocarbons coming from high-pressure and high-temperature reservoirs and in gas lines.

Growing community of inventors

Hameau Margency, France

Gérard Moracchini

Growing community of inventors

Hameau Margency, France

G&eacute;rard Moracchini

Gérard Moracchini