High-salt oil fields, the use of the neutron lifetime log, dividing the layer of oil, gas and water will become possible, and has been a very effective method of logging. Oil field for the freshwater, with special logging process, and also made a valid application.

For a high-salt oil fields, and use life expectancy neutron logging, Oil and Gas Division will become a water level may be, but is already a very effective method of logging. For freshwater oil fields, and a special logging process, and achieved effective applications.

Regarding the high salty oil field, the use neutron lifetime log, the division oil gas water level then becomes possibly, moreover already was one very effective oil well logging method.Regarding the fresh water oil field, uses the special oil well logging craft, also has obtained the effective appl

For high salt oilfield, the use of neutron-lifetime logging, Division of oil and gas layers becomes possible, and is already a very effective method of logging. For freshwater oilfields, using a special logging technique, application has also been effective.

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