Technical resources

Drilling engineering, explained from the data up.

Practical articles about drilling data architecture, statistics, engineering models, real-time systems, directional work, and applied AI.

Aug 31, 2026 · 14 min read

Distinguishing Drillstring Washouts from Mud-Pump Failures in Real Time

A drop in standpipe pressure is one of the classic signatures of a drillstring washout, but mud-pump degradation can produce much of the same behavior. This article explains how flow-out trends, pressure-to-flow relationships, modeled hydraulic pressure, time history, rig state, and sensor validation can be combined to distinguish the two failure modes more reliably.

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Aug 31, 2026 · 14 min read

How Survey Interval Affects Wellbore Tortuosity Analysis

Wellbore tortuosity is increasingly used to evaluate directional performance and BHA quality, but the calculated value depends partly on how the trajectory was surveyed. This article examines how survey spacing changes the geometric features visible to a tortuosity calculation, why resampling does not automatically solve the problem, and what engineers should normalize before comparing wells or BHAs.

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Aug 31, 2026 · 14 min read

Interpreting High ROP in the Context of Drilling Efficiency

Rate of penetration is one of the most visible drilling-performance metrics, but high ROP does not necessarily mean the drilling process is operating efficiently. This article examines how MSE, torque behavior, drilling dysfunctions, formation context, hole cleaning, bit condition, and wellbore quality change the interpretation of ROP—and why the best operating point cannot be determined from drilling speed alone.

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Aug 31, 2026 · 13 min read

Distinguishing Sensor Faults from Real Drilling Process Changes

An unexpected rig signal can mean that an instrument is wrong or that the drilling process itself has changed. This article examines why simple threshold alarms are insufficient, how physical relationships between drilling measurements provide analytical redundancy, and how uncertainty and operational context can be used to distinguish questionable data from meaningful changes in the drilling process.

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