Setting Packers on Coiled Tubing Saves USD 18,000 Per Well in Marcellus Shale

Published: 05/14/2015

Concrete blue texture
 
Photo: Setting Packers on Coiled Tubing Saves USD 18,000 Per Well in Marcellus Shale - Coiled tubing efficiencies reduce packer-setting time, risk, and downtime after milling operations
To minimize costs and mitigate risk, Schlumberger recommended CoilTOOLS tools and solutions to rig up the 24-ft packer assembly using CT instead, eliminating a redundant crew and truck on location. Schlumberger sourced the swivel connection and knuckle joints to make up the packer horizontally, allowing the operator to mill out 21 wells and set packers after milling operations with the same crew. This brought average job time down to 10 hours and saved a total of USD 395,000.
Location
Marcellus Shale, United States, North America
Details

Pennsylvania, USA
Marcellus Shale

Lithology
Shale
 
Play
Marcellus
 
Temperature
140 degF [60 degC]
 
Pressure
3,500 psi [24 MPa]
 
Average job time
10 h
 
CT string size
2 in and 2.375 in, 5.1 cm and 6 cm]

Background
An operator needed a downhole barrier to isolate the annulus immediately after millout. However, setting packers with wireline required a standby wireline crew on location in addition to a coiled tubing crew to rig down and rig up for each well, which could take up to 40 hours per well.