Hole Cleaning in Drilling Operations

Drilling Fluids Series | Est. Length: 1:30hr

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Many people involved in drilling of an Oil or Gas well may be aware of the basic role and function of the Drilling Fluid (Mud) but not have a thorough understanding of one of its most important functions, that is keeping the hole clean.

Solids build up in the well bore as the formation is drilled and if not transported out of the hole will eventually create a situation where the drill string can become stuck and the entire well is placed in jeopardy.

This course will give participants an in depth knowledge of how cuttings are transported, the various forces acting upon the cutting in the well bore, the function and application of Rheology and Viscosity. As well as the indicators of poor hole cleaning, good hole cleaning techniques and the correct application of pills.

Course Curriculum:

  • Why Clean the Hole?
  • Forces, Velocities & Settling
  • Cuttings Beds (prevention, formation and removal)
  • Flow Characteristics
  • Poor Hole Cleaning Indicators
  • Best Hole Cleaning Practices
  • Rheology and Viscosity
  • Pills Function & Applications

This course is designed for:

  • Any technical and non-technical personnel, who wants to gain greater understanding of the Hole Cleaning process.
  • Professionals in the office who monitor and review the rigs operations.
  • Professionals who want to work on the drilling rig.
  • Professionals who already work on the rig and want to become a more valuable crew member.


  • General knowledge rig operations and circulation of the drilling fluid
  • Awareness on the oilfield terms
  • Beginner experience in drilling
  • Willingness to gain increased knowledge of the Drilling Process

Course Objectives:

Participants will gain and broaden their knowledge of the Hole Cleaning process, what affects it and the results of poor cleaning such as the formation of cuttings beds and packoffs. You will also learn some good drilling practices to improve hole cleaning and the correct application of various cleaning Pills.

Est. Length:
1hr video material
30 mins quiz

Your Instructor

Gregory Gibbons
Gregory Gibbons

Gregory Gibbons has over 40 years of experience in the Oil Industry, 38 of which have been specializing in Drilling Fluids. He has worked worldwide for all the Major Service Companies including Baker Hughes, MI Swaco and Halliburton and have held various Field Operations & Management positions. Since 2010 Greg has worked as a Fluids Advisor for Operators in Africa, South East Asia and the Middle East and has worked on every continent except Antarctica.

Greg started his career as a Trainee Driller in Trinidad and rose through the ranks to Assistant Driller. He moved into Drilling Fluids in 1976 and in 1990 began working overseas and quickly became the “go to” guy for difficult and remote operations from the deserts of Yemen to the mountains of Pakistan. The last 6 years he has been the Fluids Advisor for Operators in Vietnam, Nigeria and Kurdistan. In addition, he is a lecturer at the Drilling Academy in Trinidad and mentors and advises young professionals in the Drilling Fluids field.

Frequently Asked Questions

When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does 12 months access sound? After enrolling, you have unlimited access to this course for 12 months as often as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.

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