Method of sampling from a multiphase fluid mixture, and...

Details Method of sampling from a multiphase fluid mixture, and... Method of sampling from a multiphase fluid mixture, and...

2006-04-11

2006-04-11

Williams, Hezron (Department: 2856)

Measuring and testing

Sampler, sample handling, etc.

With constituent separation

Reexamination Certificate

active

07024951

ABSTRACT:
The invention relates to a method of sampling a fluid phase in a multiphase fluid mixture flowing in a pipe (7) under given pressure conditions (P), said method comprising the following steps; admitting the multiphase fluid mixture into a phase separator (9); separating the multiphase fluid mixture so as to isolate the fluid phase for sampling; pressurizing a sampling device (10) to the given pressure in the pipe (7); and recovering a sample of said fluid phase in said sampling device. According to the invention, the method further comprises a step of increasing the pressure in the phase separator (9) in successive stage until said pressure in the separator reaches the give pressure (P) in the pipe (7). The invention also provides a sampling apparatus for taking a fluid phase from a multiphase fluid mixture flowing in a pipe (7) under given pressure conditions (P), said apparatus comprising: a phase separator (9); admission means (11, 12a) for admitting the multiphase fluid mixture into said separator; and sampling means (10) for taking a sample of said fluid phase, said sampling means being connected to the phase separator. According to the invention, the apparatus further comprises closure means (8a, 8b, 8c) for increasing the pressure inside the separator (9) in successive stages.

REFERENCES:
patent: 3824858 (1974-07-01), Erdman
patent: 5654502 (1997-08-01), Dutton
patent: 6182505 (2001-02-01), Segeral
patent: 2003/0159986 (2003-08-01), Amado et al.

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