US 2010/0132947 A1 · Method for Perforating Failure-Prone Formations

Abstract

By using reactive shaped charges to perforate failure prone formations, the present invention is able to keep formation sand in place and increase productivity. An efficient flow distribution is surprisingly produced without requiring surge flow or post-perforation stimulation. Further, using the secondary reactive effects of reactive shaped charges allows for the reduction of the risk of erosion and minimization of sand production. In a preferred embodiment, a liner capable of producing a strongly exothermic intermetallic reaction between liner components within and around the tunnel is used to achieve a high percentage of substantially clean and enlarged perforation tunnels conducive to flow or gravel packing

Claims11

Dependent claims

A method for reducing sand production in the perforation of a failure-prone formation, comprising:

a) loading a plurality of reactive shaped charges within a charge carrier;
b) positioning the charge carrier adjacent to a failure-prone formation;
c) activating the charge carrier to create a first and second explosive event, wherein the first explosive event produces a plurality of perforation tunnels within the adjacent failure-prone formation;
and wherein the second explosive event increases the volume of said perforation tunnels, thereby reducing a flux rate within each perforation tunnel.

1 more element

Dependencies are inferred from the claim text.

Method for Perforating Failure-Prone Formations

Life of this patent

Method for Perforating Failure-Prone Formations

Life of this patent

Abstract

Claims11