Measurement while drilling (MWD) – Introduction

Measurement while drilling (MWD) - Introduction

The term Measurement While Drilling (MWD) includes any tool that can be used while drilling, including wireline steering tools. In practice it means 'wire-less' measuring systems, e.g. systems using mud pulse or electromagnetic telemetry.Measurement While Drilling (MWD) surveys can be used both as orientation surveys with steerable BHAs, or to replace magnetic multi-shot surveys while rotary drilling. Measurement While Drilling (MWD) surveys are of comparable accuracy as wireline solid state magnetic surveys and can be used as definitive surveys.The simplest Measurement While Drilling (MWD) system is the Teledrift offered . . .

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