Formation fluid property determination
AssigneeHalliburton Energy Services, Inc.
InventorMichael T. Pelletier
Life of this patent
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Abstract
In some embodiments, an apparatus and a system, as well as a method and an article, may operate to obtain a formation fluid sample from a formation adjacent to a wellbore disposed in a reservoir, determine the sample saturation pressure of the formation fluid sample, repeat obtaining the formation fluid sample and determining the sample saturation pressure over a selected time period or number of samples, and determine a predicted ultimate formation fluid saturation pressure based on multiple determinations of the sample saturation pressure. The sample saturation pressures measured over selected time periods can be used to determine fluid sample contamination. Additional apparatus, systems, and methods are disclosed.
Claims26
An apparatus, comprising:
- a fluid sampling device to obtain a plurality of formation fluid samples from a formation adjacent to a wellbore;
- a pressure measurement device to measure sample saturation pressure of each of the plurality of formation fluid samples;
- and
- a processor to determine a predicted ultimate formation fluid saturation pressure based on multiple measurements of the sample saturation pressure.
A system, comprising:
- a downhole tool;
- and
- an apparatus at least partially housed by the downhole tool, the apparatus to provide a predicted ultimate saturation pressure of a formation fluid sample, the apparatus comprising a fluid sampling device to obtain a plurality of formation fluid samples from a formation adjacent to a wellbore, a pressure measurement device to measure sample saturation pressure of each of the plurality of formation fluid samples, and a processor to determine the predicted ultimate formation fluid saturation pressure based on multiple measurements of the sample saturation pressure.
A method, comprising:
- obtaining a formation fluid sample from a formation adjacent to a wellbore disposed in a reservoir;
- determining a sample saturation pressure of the formation fluid sample;
- repeating the obtaining of the formation fluid sample and the determining of the sample saturation pressure over a selected time period or number of samples;
- and
- determining a predicted ultimate formation fluid saturation pressure based on multiple determinations of the sample saturation pressure.
An article including a machine-accessible medium having instructions stored therein, wherein the instructions, when accessed, result in a machine performing:
- a formation fluid sample from a formation adjacent to a wellbore disposed in a reservoir;
- determining a sample saturation pressure of the formation fluid sample;
- repeating the obtaining of the formation fluid sample and the determining of the sample saturation pressure over a selected time period or number of samples;
- and
- determining a predicted ultimate formation fluid saturation pressure based on multiple determinations of the sample saturation pressure.
Dependencies are inferred from the claim text.