کلمه scratcher یافت شد:
n: a device that is fastened to the outside of casing to remove mud cake from the wall of a hole to condition the hole for cementing. By rotating or moving the casing string up and down as it is being run into the hole, the scratcher, formed of stiff wire, removes the cake so that the cement can bond solidly to the formation.
n: a device fasten to the outside of the casing, and which removes mud cake and thus promotes a good cement job.
a device with bristles or wires that is used to remove mud cake, soft deposits, etc.
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