초록 ▼

A perforating gun contains charges which are rotatable between a stored position and a deployed position, the charges being connected to an enclosed carrier tube via a mechanical link retaining apparatus which is capable of bending but is incapable of stretching by any substantial distance. A primac

A perforating gun contains charges which are rotatable between a stored position and a deployed position, the charges being connected to an enclosed carrier tube via a mechanical link retaining apparatus which is capable of bending but is incapable of stretching by any substantial distance. A primacord is held by said retaining apparatus firmly onto a top of each charge thereby preventing relative movement between the primacord and the charge when the charge is deploying between its stored position and its deployed position. A set of pullrods connect to each pivot of each charge. Thus, when an upward force is placed on the pullrods, an accompanying force is placed on the pivots of each charge. Since the retaining apparatus connects to the top of each charge and to the carrier, and since the retaining apparatus is incapable of stretching by any substantial distance, the accompanying force on the charge pivots creates a torque which rotates the charges between the stored position and the deployed position.

대표청구항 ▼

A perforating gun for use in oil well boreholes, comprising: charge means rotatable between a first stored position and a . second deployed position for detonating and perforating a formation, said charge means having pivots; carrier tube means for enclosing said charge means; a retaining apparatus

A perforating gun for use in oil well boreholes, comprising: charge means rotatable between a first stored position and a . second deployed position for detonating and perforating a formation, said charge means having pivots; carrier tube means for enclosing said charge means; a retaining apparatus connecting a top of said charge means to a wall of said carrier tube means, said retaining apparatus being capable of bending but being incapable of stretching by any substantial distance; and pullrod means connected to the pivots of the charge means for placing a force on said pivots of said charge means in response to an accompanying force placed on said pullrod means, said charge means rotating between said first stored position and said second deployed position and said retaining apparatus bending but not stretching any substantial distance when said pullrod means places said force on said pivots of said charge means.