Changes

Based on the ability of the fluid to freely fill the pretest chamber, a larger sample of formation fluid can be taken for analysis on the surface. The larger samples can range from 1 to 10 gal or more. Due to mud filtrate invasion, a large fraction (if not all) of the retrieved fluid may be mud filtrate. Proper analysis of the sample involves discriminating the filtrate from the native formation fluids.

Based on the ability of the fluid to freely fill the pretest chamber, a larger sample of formation fluid can be taken for analysis on the surface. The larger samples can range from 1 to 10 gal or more. Due to mud filtrate invasion, a large fraction (if not all) of the retrieved fluid may be mud filtrate. Proper analysis of the sample involves discriminating the filtrate from the native formation fluids.

Measurements of water resistivity, API gravity, gas to oil ratio, and water chemistry can be performed at the wellsite with prior planning with the vendor. Formation fluid samples can also be maintained at formation pressures and shipped to laboratories for detailed analysis. However, shipment of pressurized samples may require use of special vessels approved by the Department of Transportation, and prior arrangements should be made with the involved vendors.

Measurements of water resistivity, [[API gravity]], gas to oil ratio, and water chemistry can be performed at the wellsite with prior planning with the vendor. Formation fluid samples can also be maintained at formation pressures and shipped to laboratories for detailed analysis. However, shipment of pressurized samples may require use of special vessels approved by the Department of Transportation, and prior arrangements should be made with the involved vendors.

==See also==

==See also==