RIGZONE - How Does Logging-While-Drilling (LWD) Work
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1/8/15 7:51 PM RIGZONE - How Does Logging-While-Drilling (LWD) Work? Page 1 of 2 https://www.rigzone.com/training/insight.asp?i_id=297 SUBSCRIBE Our privacy pledge. Get freeindustry updates via email. Daily News Weekly News Equipment Updates Weekly Job RegisterMonthly Event Guide your email here Safari Power Saver Click to Start Flash Plug-in advertisement For centuries, drillers (whether drilling for oil or water) have been keeping keen notes of drilling activities. What started as a regularrecord of drilling depth versus cuttings observed (also known as mud logging) has transformed to encompass various technological well logging measurements, including electric logging, SP, induction and GR. Most recently, scientists and engineers have developed Logging-While-Drilling (LWD), a type of well logging that incorporates thelogging tools into the drill string, administering, interpreting and transmitting real-time formation measurements to the surface. Overcoming well logging challenges presented by directional drilling, LWD has revolutionized the well logging concept. By locating well logging tools near the drill bit on the end of the drilling apparat us, LWD enables drillers to log wells that exceed 60 degrees, which makes pushing the tool through the well impossible. Additionally, by providing real-time inf ormation, LWD helps drillers and engineers to make immediate decisions about the future of a well and the direction of drilling. Providing information on porosity, resistivity, acoustic waveform, hole direction, and weight on bit, LWD transmits logging measurements at regular intervals while drilling is taking place. Data is transmitted to the surface through pulses through the mud column (also known as mud pulse of mud telemetry) in real time. A type of LWD, Measurement-While-Dri lling (MWD) specif ically refers to information used to help in steering the drill, such as direction, orientation and drill bit information. Drillers and engineers are able to use LWD information immediately to define well placement and predict drilling hazards. Known as "intelligent drilling," use of real-time logging information provided by LWD is enabling stronger, more successful wells both onshore and off. HOW IT WORKS How Does Logging-While-Drilling (LWD) Work? Safari Power Saver Click to Start Flash Plug-in Safari Power Saver Click to Start Flash Plug-in Training CenterHow It Works Online Training Classroom Training Custom Training Heavy Oil TRAINING PROVIDERS Post a Course Advertise SEARCH E&P NEWS CAREER CENTER O&G DIRECTORY RIG DATA EVENTS EQUIPMENT TRAINING MORE login| become a member| newsletters| advertise
RIGZONE - How Does Logging-While-Drilling (LWD) Work
