| http://www.w3.org/ns/prov#value | - A method of underbalance perforating a formation traversed by a borehole comprising the steps of:attaching a perforating gun to a bottom part of a tubing via a latch mechanism, said latch mechanism including a latch dog biased by a spring, the latch dog being adapted to contact said bottom part of said tubing when said latch dog is disposed in a non-actuated position in opposition to a biasing for
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