Hydrocarbon recovery methods by creating high-permeability webs

Details Hydrocarbon recovery methods by creating high-permeability webs Hydrocarbon recovery methods by creating high-permeability webs

1999-01-04

2000-01-11

Suchfield, George

Wells

Processes

Specific pattern of plural wells

166 50, 166248, 166268, 1662727, 166308, E21B 4324, E21B 4326, E21B 4330

Patent

active

060125209

ABSTRACT:
A gravity-drainage hydrocarbon recovery method is provided to produce oil and gas from subterranean formations. A substantially horizontal high-permeability web is created at the bottom portion of an oil reservoir. The web is connected to a production well. The high-permeability web is fabricated by conventional drilling, high-pressure water jet drilling, and high-power microwave fracturing. Primary oil recovery will benefit from this configuration in terms of improved volumetric sweep efficiency, delayed gas break through, increased oil production rate and overall oil recovery. This method is also used with secondary oil recovery for which a gas is injected into the upper portion of a reservoir. Oil is produced from the bottom portion of the reservoir. If economically warranted, high-permeability web is also implemented to the injection well. The method for this invention is also used in conjunction with any horizontal and vertical well arrangement methods, enhanced oil recovery methods, and methods used for oil field conformance improvement.

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