marble shot

marble shot

[′mär·bəl ‚shät]
(petroleum engineering)
An explosive shot in open-hole well completions in which glass marbles are packed around the explosive in the wellbore; the marbles become projectiles that help break up the formation.
References in periodicals archive ?
The new video, from the Suomi spacecraft, is essentially a night-time version of the famous Blue Marble shot taken by the crew of Apollo 17 in 1972.
Not noted as a quick starter, Ballyhoe Marble shot out of the inside trap on this occasion and moved towards the middle.
Hossam said that after some pressure was applied a second report was released and confirmed that Naguib died as a result of a glass marble shot to the head.
At the time of their arrest, they were allegedly in possession of birdshots, marble shots and live ammunition, three firearms and nine molotov cocktails.