Schlumberger Technology Corporation

Nicolas Adur

Ricardo Vasques

Cosan Ayan

Gustavo Andreolli Ribeiro

Arne Richard Pedersen

Antonio Castilho

Edward Harrigan

Andrew Carnegie

James J Dunlap

Matheus Nogueira

Alejandro Duran

Methods and systems for testing a subterranean formation penetrated by a wellbore are provided. A testing tool has a plurality of packers spaced apart along the axis of the tool, and at least a testing port. The testing tool is positioned into the wellbore and packers are extended into sealing engagement with the wellbore wall, sealing thereby an interval of the wellbore. In some embodiments, the wellbore interval sealed between two packers is adjusted downhole. In one embodiment, the location of the testing port is adjusted between two packers. The methods may be used to advantage for reducing the contamination of the formation fluid by fluids or debris in the wellbore.

Adjustable testing tool and method of use

A method and apparatus for sampling formation fluid includes drawing formation fluid from the subterranean formation into the downhole tool and collecting the formation fluid in a sample chamber. An exit flow line is operatively connected to the sample chamber for selectively removing a contaminated and/or clean portion of the formation fluid from the sample chamber whereby contamination is removed from the sample chamber. For example, a clean portion of the formation fluid may be passed to another sample chamber for collection, or a contaminated portion may be dumped into the borehole.

Downhole sampling apparatus and method for using same

Growing community of inventors

Santiago del Estero, Argentina

Nicolas Adur