Wellsite Geologist

Course details

• Compare drilling operations both onshore and offshore and understand the differences between the various types of rigs and platforms.
• Distinguish the various components of the drill string: hoisting and rotating systems and pipe handling equipment; bit types and their design and application; the mud circulation process and system; the variety of drilling fluids and well hydraulics; casing and cementing procedures; directional drilling processes and techniques; borehole surveying.
• Appraise mudlogging services, including the collection and analysis of ditch cuttings and lag time estimation; depth and bit parameter measurements; the collection, analysis, and integration of gas readings; and the wider role of mudlogging in safety monitoring and drilling engineering support.
• Analyze how ditch cuttings are sampled, described, reported, logged, and evaluated for lithological evaluation and hydrocarbon potential.
• Compare conventional coring and sidewall coring processes, procedures and evaluation techniques.
• Distinguish the acquisition, processing, and basic interpretation of wireline from LWD logs and their integration with other wellsite-derived geological data.

• Well site geologist job description.
• Duties and responsibilities for well site geologist
• Safety on rig site
• Office preparation
• Getting mobilizing
• Mud logging unit supervision
• Cuttings: sampling, cleaning, analysis, description, calcimetry, lag time, XRD, fluorescence.
• Quality and representativeness of cuttings

• Quick review of mechanical parameters (WOB, RPM, and ROP) and hydraulic parameters (SPP, MFR, MWt in & out, etc.) monitored during drilling.
• Detection and evaluation of gas shows while drilling, chromatography, and type of dissolved gases in the mud.
• Importance of gas control on quality of measurements. Gas while drilling.
• Role of well site geologist: analysis and decision.
• Depth control: depth, deviation surveys (MD, TVD, TVDSS), and stratigraphic column.
• Gathering geological and drilling information

• Geological log: header and track presentation; main software programs.
• Drilling parameters for a geological log
• Calcimetry, gas, gain, and losses
• Composite log: interpretation of geological observations and descriptions for the lithology
• Rig types
• Drilling, casing, and cementing.
• Core and casing points

• MDW, LWD, and Geosteering
• Wireline logging operations
• Preparation for wireline logging
• Log quality control
• Overview of Shally sand interpretation
• Overview of log interpretation in thin sand/shal sequences
• Overview of log applications in Shall-oil/gas formations

• Integration of other data: well tests results and logging information.
• Supervision and quality control of logging operations.
• Coring operations: core recovery, cleaning, splicing, description, fracture identification, sampling, photos.
• Final report
• Case studies