Method for determining formation porosity and gas saturation...

Details Method for determining formation porosity and gas saturation... Method for determining formation porosity and gas saturation...

2007-10-16

2007-10-16

Hannaher, Constantine (Department: 2884)

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

C250S253000, C250S256000, C250S265000, C250S269100, C250S269200, C250S269300, C250S269400, C250S269500, C250S269600, C250S269700, C250S269800, C702S006000, C702S013000, C324S303000, C324S338000, C324S333000, C324S339000

Reexamination Certificate

active

10856449

ABSTRACT:
Measurements made with porosity and density logging tools in a gas reservoir may differ due to invasion effects. The effects are particularly large on measurement-while-drilling applications where invasion is minimal. Using a Monte-Carlo method, a relationship is established between true formation porosity and porosity estimates from density and porosity tools. This relationship is used on real data to get an improved estimate of formation porosity and of gas saturation.

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