System and method for sampling and analyzing downhole formation fluids

摘要

A device for sampling fluid from an earth formation is disclosed. The device includes: an inlet port disposable in fluid communication with the fluid in a borehole; an injector including an injection chamber in fluid communication with the inlet port, the injector configured to receive a portion of the fluid and direct the fluid toward an analysis unit for analyzing constituent materials in the fluid; and a high pressure valve configured to admit the portion of the fluid at a borehole pressure and release the portion of the fluid into the injector, the portion having a volume that is less than or equal to about one microliter. A system and method for analyzing constituents of fluid in a borehole in an earth formation is also disclosed.

主权项

1. A method of analyzing constituents of fluid in a borehole in an earth formation, the method comprising:
receiving the fluid via an inlet port from the borehole; actuating a valve to inject a selected portion of the fluid into an injector, the selected portion having a volume that is less than or equal to about one microliter, the injector including an injection chamber and a nozzle in fluid communication with the inlet port, the injection chamber having a volume that is at least substantially equal to the volume of the selected portion of the fluid; advancing the selected portion through the injector; and receiving the fluid in an analysis chamber and detecting constituent materials in the fluid via an analysis unit disposed in the analysis chamber.