Automatic Gun Release

2-3/8" & 2-7/8” EUE The Automatic Gun Release is run when it is desirable to drop the gun upon firing. This tool is designed to fit onto the top sub of the gun. A short section of detonating cord runs through the center of the tool below the percussion detonator. several Owen Firing Heads can be threaded into the top of this tool for detonation of the gun system. The gun can be activated by either:

Mechanical Gun Release, Shift Up

The Mechanical Gun Release, Shift Up is designed as a medium duty separation tool for use in TCP operations where it is desirable to drop the discharged gun system. The guns may be released using a standard Model B Shifting tool. After the guns have been released, a tapered re-entry guide remains on the tubing for production purposes. The shifting sleeve bore size is the minimum I.D. after the tool has been shifted.

Vertical Shock Absorber, 3-1/2" O.D

The 3-1/2" Vertical Shock Absorber is designed to run between the Packer and TCP guns. The purpose of the VSA is to protect delicateelectronic gauges and mechanical tools from the severe shocks associated with the detonation of the TCP guns.

Radioactive Marker Sub

The Radioactive (RA) Marker Sub is run in a TCP string above the Firing Head or Packer, and is used for accurate depth control. A small radioactive pellet is inserted into the cavity of the sub and can be readily detected by wireline gamma ray logging tools. The gamma ray log done inside the tubing can be compared to the open hole logs with the location of the RA Marker superimposed. This gives the exact location of the Marker with respect to the formation of interest, so gun placement may be done extremely accurately as a comparison to pipe tally calculations.

Combination Fill/Flow Nipple

barrier of the Fill/Flow Sub, along with a restricted ID through the tool which acts as an integral No-Go feature. This tool may be used as a Combination Fill/Flow and No-Go and may be placed below a gun release in the TCP string.

Surge Tool, Underbalance Sub

The Under balance Sub may be run in a TCP string to achieve a differential pressure between the formation and tubing string to establish an under balance condition for perforating. This tool uses a thick glass disk sealed inside the housing as a pressure barrier.

Digital Shot Detection System

Digital Shot Detection System (DSDS) enables the user to monitor downhole acoustics on the tubular. The system is particularly well suited for monitoring the firing of Tubing Conveyed Perforating Guns.