Density Logging

Density Logging The measurement of formation density is an essential component in accurate reservoir evaluation, helping the petrophysicist to determine the porosity of the rock and to estimate total reserves. Porosity represents the amount of space available within the rock matrix for fluids, and defines how much total volume of fluid is present in a reservoir.  Without this information, and a determination of which type of fluid is present (oil, water or gas), a petrophysicist would be unable to estimate the reserves of hydrocarbon that exist in the reservoir. Moreover, azimuthal borehole images based on density help the geologist to understand the reservoir structure.

The combination of the azimuthal lithodensity (ALD™) and compensated thermal neutron (CTN™) sensors helps operators with valuable information about the reservoir such as:

  • Formation Evaluation – Make critical porosity measurements and distinguish between liquid and gas, all during drilling operations when the borehole is in its best condition.
  • Reservoir Structure and Well Placement – Density images can help determine the positions and orientations of formation boundaries and fault planes, helping the operator to understand the size and shape of the reservoir and to place the well optimally within it.
  • Wellbore Stability – Ultrasonic measurements help determine the borehole geometry in real time, providing an early indication of stress-related borehole breakout, allowing the operator to apply timely mitigating techniques to maintain borehole integrity.

Density Logging

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Summary North Sea, Norway: Operator Successfully Runs 5 ¾-inch Slim-Hole Drilling Operation with Geo-Pilot® RSS System Mar 2017
Summary Oman: Operator Proves Cost Savings With LWD High-Resolution Imaging Service Mar 2017
Summary Gulf of Mexico: Geosteering Solution Successfully Lands Wellbore in Difficult Section, Saving Operator USD 600,000 Jan 2017
Summary Gulf of Mexico: New LWD Density Service Saves Operator USD 1 Million Jan 2017
Summary U.K. Offshore: Operator Saves Significant Rig Time by Gathering Complete Formation Evaluation Data in Real Time Nov 2016
Summary Mexico: Operator Saves Time USD 7.5 Million in Deepwater Rig Time by Acquiring Crucial Formation Evaluation Data in Real Time Nov 2016
Summary US-GOM: An operator saved an estimated US$500,000 by staying completely within the target window Jun 2015
Summary Oman: SOLAR Quad-Combo Saves 2-3 Days in HPHT wells May 2015
Summary Gulf of Mexico: Sperry Combines ALD™ and DGR™ Sensor Data for Innovative Solution in Difficult GOM Deepwater Well May 2012
Summary Gulf of Mexico: Real–Time Density Imaging Guides Successful Single Run from Kick-off to TD in Horizontal Shale Well Oct 2011
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ALD™ Azimuthal Lithodensity Sensor
The ALD LWD tool features high-quality measurements of formation density and photoelectric (Pe) factor for reliable reservoir evaluation.
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