Detailed Description

Control lines are assembled on reels filled with fluid and pressure tested. Reel spools are designed so pressure can be applied at any time during running to check control-line integrity. Hydraulic control lines are made from two different manufacturing processes that conform to ASTM specifications: (1) seamless and (2) welded and sunk. Seamless Tubing is fabricated from a solid rod. The process involves forcing a mandrel or punch through the solid rod to form a tube. The continuous lengths available from this process are limited. Welded and Sunk Tubing is fabricated from flat stock. The process involves rolling the stock into a cylinder and welding the seam. Once in tube form, it is drawn through a die to achieve the proper OD. This process is considerably less costly than the seamless method and yields lines available in continuous lengths with no butt-welded connections. Optional single and dual lines with protective encapsulation are available. The encapsulated material is suitable for use in most annular fluids. Encapsulation protects lines from damage during installation and simplifies the running process. The dual-encapsulated line can be used with “balanced” SCSSVs or injection wells where multiple lines are required. As an option, a protective cable between two control lines is available. Single-encapsulated lines have no cable; however, a protective cable on either side of the control line can be ordered. Installation Control lines are attached to subsurface controls with appropriate tube fitting and pressure tested before running into the wellbore. Line spools are hung in the derrick, and control line is paid out as tubing is run. Applications » For SCSSVs Features » Different lengths of control line in continuous coil » Stainless and alloy 825 materials offered » Control lines offered in various encapsulated options » All control lines conform to ASTM specifications » Lines available in other sizes on request *information sourced from manufacturer