Claims
- 1. An apparatus for determining an optimal pumping rate for a formation fluid sample comprising:
a sample chamber containing a fluid sample; a pump for pumping fluid into the sample chamber; a pressure measurement device for measuring the pressure on the sample inside of the sample chamber; an expandable volume associated with the sample chamber for reducing the pressure on the sample in the sample chamber; and an optical analyzer for analyzing the sample to determine a pressure at which a peak power occurs associated with electromagnetic energy passing through the fluid sample.
- 2. The apparatus of claim 1, further comprising:
a function for determining an optimal pumping rate based on the pressure at peak power.
- 3. The apparatus of claim 1, further comprising:
a function for determining a dew point pressure for the sample.
- 4. The apparatus of claim 3, further comprising:
a function for determining an optimal pumping rate based on the dew point pressure.
- 5. The apparatus of claim 1, further comprising:
a function for determining a bubble point pressure for the sample.
- 6. The apparatus of claim 3, further comprising:
a function for determining an optimal pumping rate based on the bubble point pressure.
- 7. The apparatus of claim 1, further comprising:
a function for determining a asphaltene precipitation pressure for the sample.
- 8. The apparatus of claim 3, further comprising:
a function for determining an optimal pumping rate based on the asphaltene precipitation pressure.
- 9. A system for determining an optimal pumping rate for a formation fluid sample comprising:
a surface controller for deploying a downhole sampling tool having a sample amber containing a fluid sample; a pump for pumping fluid into the sample chamber; a pressure measurement device for measuring the pressure on the sample inside of the sample chamber; an expandable volume associated with the sample chamber for reducing the pressure on the sample in the sample chamber; and an optical analyzer for analyzing the sample to determine a pressure at which a peak power occurs associated with electromagnetic energy passing through the fluid sample.
- 10. The system of claim 9, further comprising:
a function for determining an optimal pumping rate based on the pressure at peak power.
- 11. A method for determining an optimal pumping rate for a formation fluid sample comprising:
pumping fluid into a sample chamber; measuring the pressure on the sample inside of the sample chamber; expanding the volume associated with the sample chamber for reducing the pressure on the sample in the sample chamber; and analyzing the sample to determine a pressure at which a peak power occurs associated with electromagnetic energy passing through the fluid sample.
- 12. The method of claim 11, further comprising:
determining an optimal pumping rate based on the pressure at peak power.
- 13. The method of claim 11, further comprising:
determining a dew point pressure for the sample.
- 14. The method of claim 13, further comprising:
determining an optimal pumping rate based on the dew point pressure.
- 15. The method of claim 11, further comprising:
determining a bubble point pressure for the sample.
- 16. The method of claim 15, further comprising:
determining an optimal pumping rate based on the bubble point pressure.
- 17. The apparatus of claim 11, further comprising:
determining an asphaltene precipitation pressure for the sample.
- 18. The apparatus of claim 17, further comprising:
determining an optimal pumping rate based on the asphaltene precipitation pressure.
- 19. A computer readable medium containing instructions that when executed by a computer perform a method for determining an optimal pumping rate for a formation fluid sample comprising:
pumping fluid into a sample chamber; measuring the pressure on the sample inside of the sample chamber; expanding the volume associated with the sample chamber for reducing the pressure on the sample in the sample chamber; and analyzing the sample to determine a pressure at which a peak power occurs associated with electromagnetic energy passing through the fluid sample.
- 20. The medium of claim 19, further comprising:
determining an optimal pumping rate based on the pressure at peak power.
- 21. The medium of claim 19, further comprising:
determining a dew point pressure for the sample.
- 22. The medium of claim 21, further comprising:
determining an optimal pumping rate based on the dew point pressure.
- 23. The method of claim 19, further comprising:
determining a bubble point pressure for the sample.
- 24. The method of claim 23, further comprising:
determining an optimal pumping rate based on the bubble point pressure.
- 25. The apparatus of claim 19, further comprising:
determining an asphaltene precipitation pressure for the sample.
- 26. The apparatus of claim 25, further comprising:
determining an optimal pumping rate based on the asphaltene precipitation pressure.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This patent application claims priority from U.S. provisional patent application No. 60/472,358 filed on May 21, 2003 entitled “A Method and Apparatus for Downhole Dew Point Determination” by M. Shammai, which is hereby incorporated by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
|
60472358 |
May 2003 |
US |