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Job Family: Field operations
Updated At: 2019-04-21


Purpose and Scope


Mud Loggers ensure efficiency, safety and cost control by providing the Client Company with a detailed analytical record of the geology, oil and gas shows, drilling and mud parameters, and related problems encountered during drilling and completion.


The primary objective of mud logging is to assist in the efficient completion of oil and gas wells.


B.        Responsibilities


The following illustrates the general responsibilities of a Mudlogger with respect to rig site duties.


01        Planning - Organization - Control


  • To ensure that suitably qualified International Logging personnel are always present in the Mud Logging unit during all well operations.


02        Sales


  • Promote new techniques and activities in order to increase potential markets and stay ahead of competition. Be aware of ILI capabilities and ensure client in the field is made aware of potential services/techniques.


03        Operations


Geological Monitoring.


The scope of work for each operator may vary significantly, and the individual job responsibilities vary as a result. The following is a generalized outline of core responsibilities that are to be provided as a base level on ALL contracts.


  • Perform or supervise the collection of cuttings samples, from the proper lagged depths and at the proper intervals as required for evaluation.
  • Wash and screen samples, divide them into correct portions, and pack them by sets for the Client, partners and trade.
  • Examine and describe samples as per oil industry standards and client’s specifications. Descriptions are to be performed in order for ILI to provide an independent evaluation of the well.


  • Evaluate all samples for the presence of hydrocarbon shows.


Gas and Drilling Parameters


  • Closely monitor gas levels, lag time and drilling parameters, and report any anomalies to the appropriate persons for action.


  • Monitor and evaluate all data in order to identify abnormal indications of unforeseen or hazardous events, inform the relevant drilling personnel of potential dangers, indications of drilling assembly wear/failure, etc.


  • Assist in core recovery and description as required.


  • Assist in well test operations and sampling as required.


  • Assist the client in the control of drilling operations by inputting geological information to the best of the operators ability.


04        Reporting


  • Establish an accurate and comprehensive Log as per client’s format.


  • Provide all interested parties with regular and timely reports based on geological and drilling data.


  • Notify well site personnel of any anticipated or observed drilling problems related to geology.


  • Annotate daily instrument charts clearly and correctly, and organize them for later use by the Client.


  • Update all logs requested by Client on at least a daily basis.


  • Submit daily reports concerning geological and drilling parameters to the Client representatives, as well as any other requested reports or documents.


  • Keep in regular contact with the local base to report the current work situation and discuss possible problems in the field.


05        Commercial


  • Keep in mind the basic concept of service; ensure that all tasks performed for the Client meet or exceed the customer’s and ILI’s standards.


  • Remember that satisfaction of the Client is not only a function of the service itself, but also of the way it is provided. Human relations are an essential part of the job.


  • Maintain the image of the Company and do not let internal problems interfere with service to the Client.


06        Equipment


  • Perform regular and frequent calibration checks of gas instruments.


  • Perform normal maintenance and necessary repairs on all equipment, particularly sensors, and report breakdowns immediately to the appropriate persons.


  • Propose to Management innovative ideas for improvement of techniques and equipment used in the mud logging process. Ensure a high standard of quality for installation, operation and service of equipment.


  • Maintain equipment/stock inventory.


  • Rig-Up unit and all equipment as required, to conform to scope of work. Ensure all installations are performed in a safe manner.


07        Safety


  • Be aware of safety regulations and procedures as specified by the Client, International   Logging,             and        relevant                          safety        authorities;        respect safety regulations in all circumstances.


  • Perform Local Risk Assessments to ensure that hazardous operations are minimized, controlled or procedures are put in place to minimize the hazardous nature of the operation



Education and Training

A Mudlogger is required to have:

  • A minimum of a Bachelors Degree in Geology (BSc.), Petroleum Geology or Petroleum Engineering from a recognized University.
  • Have completed the following internal training :

           14 Day Basic Oilfield Familiarization Course

             5 Day Basic Hardware Maintenance Course.


B.        Technical Requirements

Good communication skills, a thorough grasp of basic petroleum geology and excellent computer skills will have been demonstrated. Some experience with mechanical equipment would be seen as a