LIVE PL Digital Slickline Production Logging Services

LIVE PL digital slickline production logging services allow production logs to be run in a variety of well environments and locations where previously, memory logging would have been the only option. Some examples are offshore wells with a reduced platform deck area or crane lifting capacities, as well as remote wells with difficult logistics. When both slickline and electric wireline compatibility is required at the wellsite, the LIVE service allows all operations to be conducted with the same unit and line, the only change being the downhole tools run. This can be a determining factor in wells and fields with tight economics.

High-quality production logging sensors

The LIVE PL service offers any combination of the following sensors or a complete suite of production logs, in multiphase production wells or water injection wells:

• Analog casing collar locator (CCL)
• Gamma ray and digital CCL for depth correlation
• Inline strain gauge to measure temperature and pressure
• Nuclear density tool—uses a gamma ray source to measure well fluid density
• Inline flowmeter for a high flow rate or fluid velocity measurement in tubing
• Quartz pressure, temperature, and capacitance water holdup measurement tool
• Caged fullbore or continuous flowmeter to measure downhole fluid velocity

The logs are run with greater depth accuracy than is possible with memory production logging, and the logging program can be adjusted in real time to reflect well conditions. The shut-in periods needed for transient buildup tests are reduced compared with memory gauges. Knuckle joints to assist operation in deviated wells and centralizers are available.

All logging tools are provided with a memory backup feature, which records data in downhole memory at the same time as transmission to surface. 

Full interpretation of the production logging data using industry-leading software packages is available from Schlumberger experts.