By Kleider Coxe
Every well tells a story. This is where it gets logged.
From first principles to field practice, written by a petroleum engineer for petroleum engineering students, industry professionals and anyone curious about how wells are built.
Featured · Deep Dive
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Anatomy of a Deepwater Well Offshore Angola: From 36″ Conductor to Completion
A section-by-section walk through how a deepwater well is designed and built offshore Angola, from the 36″ conductor to completion, and the engineering reasoning behind each casing string.
Latest articles
Fundamentals, deep dives, case files and industry news, read from a drilling and well engineering point of view.
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Kicks, SIDPP and Kill Mud Weight: Reading a Shut-In Well
When formation fluid enters the well, the shut-in pressures reveal what has happened. SIDPP can then be used to estimate…
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Hydrostatic Pressure and ECD: The Two Numbers Behind Every Mud Weight
Two numbers sit behind every mud weight decision: hydrostatic pressure and equivalent circulating density. Here is how to calculate both,…
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Acacia-5: What a Three-Month First-Oil Target Says About Deepwater Tiebacks
TotalEnergies set a three-month discovery-to-first-oil target for Acacia-5. A target like that only works when the infrastructure is already in…
What gets logged here
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Casing programmes, pressure windows, hydraulics and ECD, BHA, torque and drag, trajectories.
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Kick indicators, losses, barriers, BOPs, MPD and lessons from public incident reports.
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Drilling Technology and Future
Automation, real-time operations, geothermal, plug and abandonment.
Who it is for
A well is designed on paper and proven at the bit. This site is about connecting the two.
For petroleum engineering students learning the fundamentals, for industry professionals who want a technical reading of the news, and for anyone curious about how wells are designed, drilled and completed.
About the author
Kleider Coxe is a petroleum engineer (BSc Hons, University of Aberdeen) focused on drilling and well engineering. He spent his early career offshore on deepwater development wells in Angola, from spud to completion, and is a professional member of SPE. He writes The Well Log in a personal capacity.