Hydraulic Jet Propulsion Tool and Mill Combination
During plug milling in a long lateral, coiled tubing operations can be affected by high friction, helical lockup, limited weight transfer, and insufficient debris transport. ASBR used a Hydraulic Jet Propulsion Tool with a mill to provide jet-assisted propulsion, debris movement, and controlled drilling or cleanout flow states.
Challenge
Deep shale-gas long laterals often involve complex trajectories and high friction. During CT plug milling, the tool string may face limited weight transfer, reach limitations, insufficient plug debris transport, and elevated sticking risk. A single flow-path mill shoe is often difficult to optimize for propulsion, milling, and cleanout at the same time.
Tool Solution
The ASBR Hydraulic Jet Propulsion Tool is positioned between the mud motor and the mill. Through jetting channels and operating-state changes, it helps create auxiliary propulsion and cleanout flow before and after milling, supports movement through high-friction laterals, and maintains the flow needed for normal plug milling and debris transport.
Field Application
The tool string was run with coiled tubing, a mud motor, and supporting components to reach the target interval. Pump pressure, running behavior, and milling feedback were used to confirm tool state. After plug milling, the assembly continued to support wellbore cleanout and debris transport for subsequent operations.
Result Review
Public application data indicates that this type of tool combination can reduce CT trips and improve plug-milling efficiency by more than 30%. The case demonstrates the value of hydraulic jet propulsion in CT conveyance, milling support, and wellbore cleanout.