公开(公告)号：US09644460B2

公开(公告)日：2017-05-09

申请号：US15180614

申请日：2016-06-13

Applicant: GEODynamics, Inc.

Inventor： Matthew Robert George Bell ,  David S. Wesson ,  Nathan Garret Clark ,  John Thomas Hardesty

IPC: E21B43/117 ,  E21B43/263 ,  E21B43/248 ,  E21B37/00 ,  E21B43/26

CPC classification number: E21B43/263 ,  E21B37/00 ,  E21B43/117 ,  E21B43/248 ,  E21B43/26 ,  F42B1/032 ,  F42B3/08 ,  F42D1/06

Abstract: By removing material of low permeability from within and around a perforation tunnel and creating at least one fracture at the tip of a perforation tunnel, injection parameters and effects such as outflow rate and, in the case of multiple perforation tunnels benefiting from such cleanup, distribution of injected fluids along a wellbore are enhanced. Following detonation of a charge carrier, a second explosive event is triggered within a freshly made tunnel, thereby substantially eliminating a crushed zone and improving the geometry and quality (and length) of the tunnel. In addition, this action creates substantially debris-free tunnels and relieves the residual stress cage, resulting in perforation tunnels that are highly conducive to injection under fracturing conditions for disposal and stimulation purposes, and that promote even coverage of injected fluids across the perforated interval.

公开(公告)号：US10337310B2

公开(公告)日：2019-07-02

申请号：US15470198

申请日：2017-03-27

Applicant: GEODynamics, Inc.

Inventor： Matthew Robert George Bell ,  David S. Wesson ,  Nathan Garret Clark ,  John Thomas Hardesty

IPC: E21B43/116 ,  E21B43/117 ,  E21B43/263 ,  E21B43/248 ,  E21B37/00 ,  E21B43/12 ,  F42B1/032 ,  F42B3/08 ,  F42D1/06

Abstract: By removing material of low permeability from within and around a perforation tunnel and creating at least one fracture at the tip of a perforation tunnel, injection parameters and effects such as outflow rate and, in the case of multiple perforation tunnels benefiting from such cleanup, distribution of injected fluids along a wellbore are enhanced. Following detonation of a charge carrier, a second explosive event is triggered within a freshly made tunnel, thereby substantially eliminating a crushed zone and improving the geometry and quality (and length) of the tunnel. In addition, this action creates substantially debris-free tunnels and relieves the residual stress cage, resulting in perforation tunnels that are highly conducive to injection under fracturing conditions for disposal and stimulation purposes, and that promote even coverage of injected fluids across the perforated interval.