Method for determining the placement of perforations in a well c

Details Method for determining the placement of perforations in a well c Method for determining the placement of perforations in a well c

1984-06-01

1986-12-23

Smith, Jerry

Boots, shoes, and leggings

364420, 73 38, 73151, 73152, 73155, 324376, G01V 100, G01N 1508, E21B 4900

Patent

active

046316779

ABSTRACT:
A method for determining the productivity of a well site includes extracting a core with sponge coring techniques and measuring the parameters of the core. The parameters measured are porosity, permeability and percent mobile oil. A core factor is calculated which is the square root of the product of permeability and porosity and indicates the space available in the core for oil production. The core factor is multiplied by the percent mobile oil to provide a Production Index. The Production Index indicates the capacity of a given oil well to produce oil. With the Production Index data, perforations are selectively placed in various areas along the longitudinal axis of a well casing (38) to selectively allow communication between the interior of the well casing and a formation of interest. In this manner, only areas having high oil mobility are communicated within a given region of the formation of interest.

REFERENCES:
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patent: 4467642 (1984-08-01), Givens
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patent: 4561289 (1985-12-01), Jones et al.
patent: 4573342 (1986-03-01), Jones et al.
patent: 4575828 (1986-03-01), Williams et al.

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