Mud Logging

Mud Logging
July 1, 2016 Jamie


Primary Services

  • One or two man wellsite geology, mudlogging, and geosteering
  • 24/7 In house technical support
  • Geologic Reporting
  • Daily geological reports via email
  • Daily mudlogs and horizontal logs via email
  • Complete end of well report in paper and digital form
  • Final reporting and compliance with state regulatory agency
  • Archiving of samples with company and government entity


Geology/Mudlogging Responsibilities

  • Drill cutting and sample analysis and cataloging
  • Digital microscopic photography
  • Log and gamma correlations
  • Onsite calcimetry
  • Log and formation interpretation

Additional Services

  • Pre-spud drilling prognosis
  • Geologic mapping and prognosis generation
  • Full office management support and services
  • Internship programs
  • Technical support for permitting disposal wells
  • DST Evaluation
  • Core Descriptions and Supervision
  • Evaluating Electric Logs

About NCS Gas Systems

Neset Consulting Service Gas Systems originated in 2007 and became fully operational in January of 2009. Since then we have expanded our IT base, technical staff, and service center. In the spring of 2009 remote access to each unit in the field was added. Our staff now consists of 5 tech hands. A new 2,000 sq. ft. service center was built to continue the highest quality of service and support possible for our customers


The M-16 was a project that had more goals than to just make a field capable gaseous hydrocarbon analyzer.  The M-16 is a geosteering instrument designed to be more reliable, have less user input and increase the time that NCS geologists spend geosteering and decrease the time they spend compiling data.

The M-16 uses 2 NDIR sensors for the continuous total gas analysis.  One sensor is high resolution for 0-700 units of gas, from 700 to 10,000 units a different NDIR sensor is used, this sensor is able to cover the entire range of concentration up to 10,000 units.  Both sensors are housed in the same custom built manifold and run continuously, the software that runs the instrument switches between the 2 sensors seamlessly.  The system is calibrated at 5 points, 0, 200, 700, 5,000 and 10,000 units.  An analyzer is most accurate nearest a calibration point, with 5 calibration points the M-16 is extremely accurate at any concentration.  The NDIR sensors do not degrade so no field calibration is required.  They have no life span, they will work indefinitely.  They have a digital output which means they are not susceptible to electrical noise.  Sensors with analog output are susceptible to electrical noise, any electrical noise will be interpreted by the software as and change in gas concentration.

The chromatograph uses the same NDIR sensors as the total gas.  The chromatograph columns are housed in a custom built oven the temperature of the oven is controlled by the software.  Carrier air is cleaned and dried and supplied to the M-16 at 80 psi.  Digital pressure regulators control the carrier air psi to the columns, they are controlled by the software.  The plumbing inside the M-16 allows a complete purge of all lines to ensure that an analysis is taken of the gas currently coming from the mud.  This is done by the software at the beginning of each cycle.  There are 2 columns, they can be run in wildcat mode or horizontal mode.  In wildcat mode 1 column is used continuously, the second is on standby, if an increase in total gas is seen the software automatically takes a chromatograph analysis with the standby column.  In horizontal mode the column timing is staggered so as to cut analysis time in half.

The instrument has an embedded PC and is powerful enough to run the M-16 and run all mudlogging software.  This allows NCS to utilize live data acquisition, which reduces time recording data and increases the time that the geosteering crew is geosteering.  The computer has a built in battery backup which will run 6-8 hours.