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2. Measurement while drilling - Wikipedia

   en.wikipedia.org/wiki/Measurement_while_drilling

   The terms measurement while drilling (MWD), and logging while drilling (LWD) are not used consistently throughout the industry. Although these terms are related, within the context of this section, the term measurement while drilling refers to directional-drilling measurements, e.g. for decision support for the wellbore path, (Inclination and ...

3. Logging while drilling - Wikipedia

   en.wikipedia.org/wiki/Logging_while_drilling

   Logging while drilling (LWD) is a technique of conveying well logging tools into the well borehole downhole as part of the bottom hole assembly (BHA).. Although the terms Measurement while drilling (MWD) and LWD are related, within the context of this section, the term MWD refers to directional-drilling measurements, e.g., for decision support for the smooth operation of the drilling, while ...

4. Directional drilling - Wikipedia

   en.wikipedia.org/wiki/Directional_drilling

   Directional drilling (or slant drilling) is the practice of drilling non-vertical bores. It can be broken down into four main groups: oilfield directional drilling, utility installation directional drilling, directional boring (horizontal directional drilling - HDD), and surface in seam (SIS), which horizontally intersects a vertical bore ...

5. Driller's depth - Wikipedia

   en.wikipedia.org/wiki/Driller's_depth

   Driller's depth measurement is tied to drilling operations and other closely associated activities such as logging while drilling), measurement while drilling, and coring. Driller's depth is always recorded, and it constitutes the primary depth system, unless it is later superseded by a more accurate measurement such as the depth from an open ...

6. Gyrodata - Wikipedia

   en.wikipedia.org/wiki/Gyrodata

   The company operates across four major service areas: Drilling, Surveying, Wireline, and Support. Drilling Services encompasses a wide range of technologies designed for directional drilling applications, including performance motors, measurement-while-drilling (MWD) tools, rotary steerable systems (RSS), and gyro-while-drilling (GWD) tools, the latter of which was invented by Gyrodata in 2002 ...

7. Geosteering - Wikipedia

   en.wikipedia.org/wiki/Geosteering

   Geosteering is the optimal placement of a wellbore based on the results of realtime downhole geological and geophysical logging measurements rather than three-dimensional targets in space. The objective is usually to keep a directional wellbore within a hydrocarbon pay zone defined in terms of its resistivity, density or even biostratigraphy.