Schlumberger

EcoScope Multifunction LWD Service

Real-time formation evaluation

The PNG used in the EcoScope service allows the generation of neutrons on demand and eliminates the need for an AmBe chemical source. In addition to resistivity, neutron porosity, and azimuthal gamma ray and density measurements, the multifunction LWD service evaluates elemental spectroscopy and sigma. Measurements include those from the APWD annular pressure-while-drilling service, which allows monitoring hole cleaning as well as leakoff test and connection pressures.

Delivering high-speed information

EcoScope service’s large memory capacity allows recording of 2 data points/ft at ROPs up to 450 ft/h. A high effective data transmission rate, provided by the TeleScope high-speed telemetry-while-drilling service and its Orion II high-speed telemetry platform, ensures that the full suite of EcoScope measurements is available in real time to improve decisions and mitigate risk.

Dedicated internal diagnostic electronics also record information used for preventative maintenance, which can significantly extend drilling footage between failures and reduce drilling risks and NPT.

When combined with EcoScope multiple borehole images, the EcoView integrated petrophysical interpretation system assists in the analysis of the LWD service’s comprehensive data suite. The software enables the multifunction LWD service to compute an advanced petrophysical interpretation using 2D and 3D visualization tools, requiring only water salinity as input from the user. 

Related services and products

EcoScope Service User's Guide

Written by the Schlumberger Drilling & Measurements head of petrophysics, this book explores every aspect of EcoScope applications, job planning, and measurements. Read book