What device consists of a cable head, a correlation device, a positioning device and perforation guns?

What device consists of a cable head, a correlation device, a positioning device and perforation guns?

• A. Perforating String
• B. Completion String
• C. Drilling String
• D. Logging Cable

Answer: (A)

This item tests knowledge of equipment used to perforate a wellbore. A perforating string is the assembly that carries the perforation guns into place and fires them at the desired depth. It includes a cable head to connect to the surface or to the conveyance, a correlation (firing) device to time and coordinate the detonation, a positioning device to ensure the guns are at the correct location and orientation, and the perforation guns themselves to create holes through the casing and cement into the reservoir. Other options don’t fit because they’re used for different tasks: a drilling string is used to drill the well and doesn’t carry perforation guns; a completion string (production tubing) is installed after perforation to produce fluids and may include other tools but not the perforation guns themselves; a logging cable is used to lower measurement tools for formation evaluation and has no perforation capability.

This item tests knowledge of equipment used to perforate a wellbore. A perforating string is the assembly that carries the perforation guns into place and fires them at the desired depth. It includes a cable head to connect to the surface or to the conveyance, a correlation (firing) device to time and coordinate the detonation, a positioning device to ensure the guns are at the correct location and orientation, and the perforation guns themselves to create holes through the casing and cement into the reservoir.

Other options don’t fit because they’re used for different tasks: a drilling string is used to drill the well and doesn’t carry perforation guns; a completion string (production tubing) is installed after perforation to produce fluids and may include other tools but not the perforation guns themselves; a logging cable is used to lower measurement tools for formation evaluation and has no perforation capability.