Method for use in sampling and/or measuring in reservoir fluid
OwnerBjorn Dybdahlinventor
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for use in sampling, flow measuring, quantity gauging, or possibly other analysis performed in reservoir fluid found in a ground formation. An object of the invention is to perform the sampling, flow measuring and quantity gauging or the remaining analyses in situ on stabilized reservoir fluid that contains a negligible amount drill fluid. Analysis is possible by sealing off an area of the well at the hydrocarbon carrying layer and passing a volume of reservoir fluid into a drill string for analysis by accessories located in the drill string. After the analyses are performed, the reservoir fluid is returned to the hydrocarbon carrying layer.
Claims14
A method for use in reservoir fluid measuring operations, carried on as in situ measurements, comprising the steps of sealing a well with a sealing means in an area at a hydrocarbon carrying layer of a ground formation so as to create a sealed off area;
- extending an elongated pipe string from a surface position downwardly into said sealed off area;
- conducting reservoir fluid controllably through its own inherent pressure from said hydrocarbon carrying layer into said pipe string;
- carrying out said measuring operations in situ in the sealed off area by using instrumentation attached to or contained within said pipe string;
- and returning the reservoir fluid from the pipe string to the hydrocarbon carrying layer after said measuring operations have been completed.
Dependencies are inferred from the claim text.