Patent ID: 9593552
Date: 2017-03-14
CPC Classifications: C04B,C09K,E21B

Claim:
1. A method of cementing a wellbore penetrating an earth formation into which a conduit extends, said wellbore having a space between the wellbore and the conduit, comprising the steps of: circulating a drilling mud containing a setting material encapsulated in capsules through the conduit into the space between the wellbore and the conduit wherein said capsules have a shell with embedded particles of energetic material, and releasing said setting material encapsulated in capsules from said capsules into the space between the wellbore and the conduit thereby cementing the wellbore, wherein said step of releasing said setting material encapsulated in capsules from said capsules comprises sending a shock signal for igniting said particles of energetic material embedded in said shell of said capsules thereby breaching said shell and releasing said setting material from said capsules.