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Location: BASRA, Iraq
Job Family: Field operations
Updated At: 2018-07-17

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JOB TITLE:              MUD Logging Geologist



A:        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.


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.
  • Ensure all information required to complete the final well report is identified, monitored, recorded, and available on time for inclusion into the final report.
  • Correctly fill out any Monthly or Weekly Report and dispatch it to the base by the first of the following month for correct Client billing. Ensure that the Monthly Activity report is completed correctly.
  • 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
  • Assist in completing Accident Near Miss investigations as required.
  • Recommend improvements to the Safety Policies and Procedures especially when accidents or near misses show an evident necessity.
  • Ensure clients and crews are aware of International Logging safety policies.
  • Perform Audit/Inspection of local operations as required.

08        Quality

  • Be aware of and implement all requirements of the Client’s systems within the scope of operations.  The major objective is to provide the best services in order to meet and/or maintain client satisfaction. Ensure that the quality directives are understood and implemented.
  • Ensure clients at the rig-site are aware of ILI quality aims.

09        Cost Control

  • Control costs by regularly and carefully following stocks and properly maintaining equipment, thus keeping reordering and emergency shipments to a minimum. Minimize wastage in all areas of operations.

10        Personal Behavior

  • Build an attitude of teamwork with the other well site personnel.
  • Be on time for crew changes and the start of each working shift.
  • Ensure that work is not left over for completion by the following shift.
  • Remain at well site and continue providing service if relief is restricted or delayed.
  • Share experience and knowledge with less experienced loggers, either in overall terms, or in term of local operations.

11        Personnel

  • Assist with allocation of crews with Local Area/Regional Management.
  • Maintain personal competence records. Recommend training, and ensure performance evaluations of employees are performed as required.
  • Verify personnel competence levels.
  • Permanently monitor skills, attitude, aptitude and motivation of all personnel under his control.
  • Identify and report potential personnel problems and system anomalies.
  • Assist in maintaining crew database, updating records, experience etc.
  • Investigate and routinely monitor possibilities for local recruitment of personnel (level of qualifications, training, aptitude, etc.).


A Mudlogger is required to have:

  • A minimum of a Bachelors Degree in Geology (BSc.), Petroleum Geology or Petroleum Engineering from a recognized University.