WHAT IS LWD.pptx

Basics of LWD

1. WHAT IS LWD? Logging while drilling is a general term to describe systems and techniques for gathering down-hole data while drilling without the requirement to remove drill pipe from the well .

2. ADVANTAGES OF LOGGING WHILE DRILLING One of the best ways to achieve accurate drilling is through logging while drilling (LWD). The advantages of logging while drilling include target zone detections, accurate gamma measurements, and proper drilling orientation. When it comes to long-reach horizontal wellbores in unconventional reservoirs, data from LWD tools aid drilling to guide the drill bit location, allowing clear-cut placement and targeting.

3. HISTORY Initial attempts to provide M/LWD date back to the 1920s, and attempts were made prior to WW2 with Mud Pulse, Wired Pipe, Acoustic and Electromagnetics. JJ Arps produced a working directional and resistivity system in the 1960s.