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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 ...
For example, slim tools are not capable of sending data at the same rates as collar-mounted tools, and they are also more limited in their ability to communicate with, and supply electrical power to, other LWD tools. [citation needed] Collar-mounted tools, also known as fat tools, cannot generally be removed from their drill collar at the ...
Geosteering only practically became possible with the advent of deep reading 2 MHz resistivity LWD tools from the major LWD vendors (BakerHughes Reservoir Navigation Tool, SperrySun and Schlumberger) and other tools in the early 1990s, and the forward modeling software from a number of vendors capable of predicting resistivity tool responses for different relative angles and formation ...
The sale price of 45.84 per share was 37.5 percent higher than Smith's closing price on February 18, 2010. The deal was the biggest acquisition in Schlumberger history until their acquisition of Cameron International .
In 2002, Schlumberger acquired Technoguide and the Petrel software tools. Schlumberger currently supports and markets Petrel. Newer versions of Petrel include additional functionality such as geological modeling, seismic interpretation, uncertainty analysis, well planning, and links to reservoir simulators.
A Washington, D.C. man has been charged with murder after police say he stabbed his grandmother to death and then texted a photograph of her dead body to other family members last Friday.
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Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole.The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs).