US 11,725,511 B2
Methods for in-situ multi-temperature measurements using downhole acquisition tool
Hadrien Dumont, Paris (FR); Christopher Harrison, Auburndale, MA (US); Youxiang Zuo, Burnaby (CA); Christopher Albert Babin, Waveland, MS (US); Li Chen, Beijing (CN); Vinay K. Mishra, Katy, TX (US); German Garcia, Katy, TX (US); Abhishek Agarwal, Sugar Land, TX (US); and Matthew T. Sullivan, Westwood, MA (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Aug. 30, 2021, as Appl. No. 17/460,923.
Application 17/460,923 is a continuation of application No. 15/087,770, filed on Mar. 31, 2016, granted, now 11,105,198.
Prior Publication US 2021/0388722 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 49/10 (2006.01); E21B 47/07 (2012.01); E21B 49/08 (2006.01)
CPC E21B 49/10 (2013.01) [E21B 47/07 (2020.05); E21B 49/0875 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining a sample of a first formation fluid using a downhole acquisition tool positioned in a wellbore in a geological formation;
stationing the downhole acquisition tool at a first depth in the wellbore, wherein the first depth has an ambient first temperature;
directing a first part of the sample of the first formation fluid into a volume of a pressure-volume-temperature tester in the downhole acquisition tool;
testing a first fluid property of the first part of the sample of the first formation fluid using the pressure-volume-temperature tester while the downhole acquisition tool is stationed at the first depth to obtain a first measurement point, such that the first part of the sample of the first formation fluid is tested at approximately the first temperature, wherein a densitometer, a viscometer, and a pressure gauge are integrated with the pressure-volume-temperature tester and operate simultaneously with each other to characterize the first part of the sample of the first formation fluid as pressure within the volume of the pressure-volume-temperature tester is changed by moving a piston;
directing a second part of the sample of the first formation fluid into the volume of the pressure-volume-temperature tester in the downhole acquisition tool;
stationing the downhole acquisition tool at a second depth in the wellbore, wherein the second depth has an ambient second temperature different from the first temperature;
testing the first fluid property of the second part of the sample of the first formation fluid using the pressure-volume-temperature tester while the downhole acquisition tool is stationed at the second depth to obtain a second measurement point, such that the second part of the sample of the first formation fluid is tested at approximately the second temperature; and
determining a temperature-dependent relationship of the first fluid property of the first formation fluid based on the first measurement point and the second measurement point.