Owen Oil Tools. orating Guns MAN-ERHSC. Glossary

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1 Expendable le Perf has been manufacturing Expendable Retrievable Hollow Steel Carrier (ERHSC) gun systems in Canada since 1979 and continues to provide innovative products to the domestic and international markets. In order to fully appreciate the technical considerations in gun selection, consider the following glossary of pating gun terms. Glossary Gun OD: The outside diameter of the pating gun measured in inches or millimetres. Typical combinations of pating gun diameter and casing diameter are as follows: Gun OD Smallest Casing OD mm inch mm inch Note: Refer to specifications of each gun for minimum allowable restrictions..3

2 Gun Length (metres or feet): The gun length in Canada is generally accepted industry wide as the linear distance from the center of the top shot to the center of the bottom shot. Internationally, gun length is commonly accepted as the overall length of the carrier. Bottom Shot of Upper Gun Tandem Shot Spacing Top Shot of Lower Gun Figure 1 Shot Density (shots/metre or shots/foot): This is the total number of shots contained within a unit length (one metre or one foot) of gun. The density can be calculated by dividing by 1 over the vertical distance between 2 charges (metres or feet). Example Vertical distance between 2 charges = metres Shot Density = 1/0.077 = 13 shots/metre Carrier Pressure Rating (MPa or psi): The safe working pressure that a carrier may withstand under normal operating conditions. The pressure rating is determined by calculation and testing. Carrier Tensile Strength (dan or lb): This is the maximum tensile rating of the gun carrier based on the limitations of the thread connection inside the carrier. Normal operating tensile loads on the gun during wireline and tubing conveyed pating operations should be designed well below this value. Carrier Thread: The description of the internal thread that has been machined inside the carrier. Tandem Shot Spacing (metres or feet): The vertical distance between the bottom shot of the upper gun to the top shot on the next gun. This will be the vertical space between shots in the casing to account for the length of the Tandem Sub and threads, as shown in Figure 2 Charge Phasing (degrees): The angular orientation of sequential charges. This phasing definition typically implies that the shaped charges are oriented in a helix. Special descriptions must accompany guns that contain shot clustering (or the grouping of multiple charges in a single plane), as shown in figure 1. Figure 2.4

3 Expendable le Perf Description Expendable Retrievable Hollow Steel Carrier (ERHSC) Gun Systems were developed to overcome certain problems inherent with Hollow Steel Carrier (HSC) or Port Guns. Port Guns consist of a thick walled pipe that accepts a threaded Port Plug and O-Ring. The charge is assembled in the gun by positioning the charge inside the carrier with a long grasping tong, inserting the alignment sleeve into the top of the charge, and then threading the Port Plug through the Carrier and onto the sleeve. The Port Gun carriers were designed for multiple runs by replacing the Port Plugs and shaped charges. ERHSC Guns The ERHSC gun systems are manufactured from pipe that has a wall thickness much thinner than the Port Guns and features a spotface or scallop at the charge location. Charges along with detonating cord are loaded into thin walled pipe called Charge Tubes then inserted into the Gun Carrier. The ERHSC guns are not reusable and must be discarded after each use. Fea eatur tures and Benefits Typically, ERHSC systems provide improved pating charge pmance when compared to HSC systems, due to the ability to accept a larger charge Installation of pating charges and detonating cord is fast and simple compared to Port Gun Systems, reducing manpower costs for assembly System reliability is much higher due to significantly fewer O-rings (therefore, significantly fewer leak paths into the gun) Fluid sensitive and top fire detonators have added a higher degree of reliability to ERHSC gun systems Expendable Retrievable Hollow Steel Carrier Hollow Steel Carrier.5

4 Tec echnical Specifica ications Gun Size 70 mm (2-3/4") 73 mm (2-7/8") 86 mm (3-3/8") 101 mm (4") 114 mm (4-1/2") 127 mm (5") Pressure Rating MPa psi dan lbs. mm ft , , , , , , , ,500 66, ,500 66,100 Tensile Rating Carrier Thread 148, , , , , TPI 468 Stub Acme Tandem Shot Spacing , , Gun Length and Total Shots Gun Total Shots Length 4 SPM 7 SPM 13 SPM 14 SPM 16.5 SPM 18 SPM 20 SPM 26 SPM 39 SPM

5 Subs for Expendable le Retrie etrievable le Hollow w Steel Carrier riers Expendable le Perf Description Gun connectors (or subs) are used to connect several gun lengths together and provide a means of attaching the gun system to wireline tools such as a collar locator. The gun subs also provide an automatic ballistic connection between guns when used in conjunction with the End to End Booster Kit or the Tandem Booster Kit. This combination ensures a simple and field proven method of ballistic transfer between subsequent gun systems. The same subs may be used when gun systems are configured for either wireline or tubing conveyed pating applications. Fea eatur tures es and Benefits its The Top Sub is compatible with GO Thread ( ) making it a universal connector. Simple design of the Tandem Sub and Tandem Booster Kit permit easy installation even in field conditions or with long gun systems. Bottom Sub features a generous cavity that will accept a variety of industry standard detonators A groove is provided in all Top and Tandem Subs for easy installation of the Owen Gris Gun Wellhead Retainer Plate when running multiple gun assemblies. Various Tandem Sub designs allow for the use of a variety of select fire systems. Side ports are available to assist in arming the intermediate gun sections. Versions of top, tandem and bottom subs are available to hold propellant on the exterior of carriers. Pickup Subs provide a means of securing the guns for transport, protecting the gun thread and provide a fire protection melt out plug. Top Sub Tandem Sub Bottom Sub.7

6 Top Sub for use with the Top Sub Booster Transfer Kit Gun Box Tie-Down Sub (Not Load Rated) Tandem Sub, E & B Select Fire, See Man-30-XXX Load Rated Handling Sub- See TC-150 ortc-155.8

7 Expendable le Orienting Tandem Subs Description Orienting Tandem Subs are used with oriented gun systems in horizontal pating. The sub features a lock ring that allows adjacent guns to be aligned and rotationally locked prior to running. Gun Size 1-11/16" 2-1/8" 70 mm (2-3/4") 86 mm (3-3/8") 101 mm (4") 127 m m (5") Maximum OD in in 70 mm in 86 mm in 101 mm in 127 mm in Overall Length in in in in in in Part Number TAG TAG OR L L