To complete the pilot program wells, the operator utilized the 7.625 x 5.5 PrimeSET Liner Hanger directly crossed over to the 4.5-in. liner. During deployment of the systems, wellbore conditions required rotation on two of the systems.
When the systems were between 1,500 and 1,000 ft from bottom (average MD of 22,500 ft), sliding with 20,000 - 40,000 lb of slack off proved to be inefficient at advancing the system. After wellbore circulation provided little or no relief to continue sliding, torque and rotation were used in conjunction with pumping. This method provided limited success and additional measures were required to get each system to bottom.
The next step was wellbore debris removal and the operator required the system remain in rotation during circulation to ensure optimal cuttings removal. Circulation was maintained between 3 and 3.5 bpm for 2.5 hours with 1,000 to 1,200 psi, while the system was rotated at 10 rpm with an average 7,500 ft-lb of torque at surface. Following cuttings removal, the system was rotated with 70,000 lb of slack off to slide to depth. One well required a maximum of 9,500 ft-lb of torque to continue rotation at 10 rpm with the combined 70,000 lb slack off.
All systems successfully reached planned depth and, once at depth, each system was set as designed prior to cementing and displacement operations.
The PrimeSET Liner Hanger is part of the Packers Plus TREX® Cemented Product Line. The TREX line offers solutions such as liner hangers, composite and dissolvable frac plugs, hydraulic toe sleeves and ball-activated sleeves for single point entry or limited entry stimulation. For more information, visit packersplus.com.