Magnetic and Gravity Toolface and How To Interpret The Meaning For Directional Drilling

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Magnetic and gravity tooสface are terms in directional drilling world to describe the direction of the well. They are different in meaning and application therefore this article will teach you about these terminologies and how to read it.

Magnetic-and-Gravity-Tool-Face-and-How-To-Interpret-The-Meaning-For-Directional-Drilling

Magnetic Toolface
The magnetic toolface is an angle projection onto the horizontal plane between the tool face and magnetic north. Typically, directional tools use the magnetic tool face when the inclination is less than 5 degree. The Figure 1 demonstrates that the mud motor is lined up to kick off at 30 degree azimuth magnetic.

Figure 1 - Magnetic Toolface
Figure 1 – Magnetic Toolface Continue reading →

Learn about Maximum Surface Pressure in Well Control (MASP, MISICP and MAASP)

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There are several terms/acronyms about maximum surface pressure in well control such as MASP, MISICP and MAASP. These terms sometimes confuses a lot of people hence this article will explain each term and demonstrate how to use it.

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Leak Off Test (LOT)

The first factor you need to understand is Leak of test pressure (LOT). LOT is the surface pressure that breaks down formation at a casing shoe for each section of the well.

Leak off test pressure formula is listed below;

Leak off test pressure, psi = Surface pressure to break formation, psi + Hydrostatic pressure, psi

Typically, leak off test pressure is describe in equivalent mud density term therefore the formulas will be like this

Leak off test pressure, ppg = (Surface pressure to break formation, psi ÷ 0.052 ÷ shoe TVD, ft) + Mud weight, ppg Continue reading →

Fatality Incident in Colorado- Fracking Accident Kills 1 Halliburton crew member and two were injured at Weld County Site, USA

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My condolences to the Family regarding this bad incident (Fatality Incident in Colorado- Fracking Accident Kills 1 Halliburton crew member and two were injured at Weld County Site). We’ve seen a lot of catastrophic incident about the fracking job and we would like to emphasize everybody about the trapped pressure potential. This can happen very quickly. These are some NEWS on internet that we collect for everybody and we wish the industry would learn from the failure to make the safer work place.

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Dropped Top Drive and Travelling Block Incidents – Where Were They Happened?

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My friend, Robert, forward my an email chain about dropped Top Drive and Travelling Block. It was scary and I felt deeply sorry for everybody. I would like to know where there were happened and their details because I just got only photos with few wordings. I want to learn about these incidents and to be able to share the right stories to my colleagues so we can have the safe workplace while working on the rig. Each photo has the number assign. If you know each particular photo, please feel free to leave me some comments so I can share it later with the team.

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Arabdrill 19 Collapse Incident

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Expect for unexpected.  Arabdrill 19  incident is one of the oilfield disasters which you should learn from it. I would like to share you about this because it will help you learn from the past. It is such a very dangerous condition while working in the field because there are several unknown factors so we need to do the proper risk assessment, fully understand the task, follow the rule/procedure and don’t feel free to stop the task if it is unsafe. The detail below is about the Arabdrill 19.

Arabdrill 19 was made by Promet in Singapore on 1982, the AD19 was initially known as Sedneth 202 and it was under contract to Aramco working offshore Saudi. It was vindicated through studies and reports that the jack-up was situated over a production platform wherein it was apparent that a leg happened to buckle and get entangled which caused the breakdown of the AD19 on the platform. Although the information is not very clear, it is apparent that the catastrophe caused the platform’s production tree to be pruned off which triggered a blast and explosion followed by fire which resulted in the submersion of the jack-up as well as the platform.

 

The owner of the rig, Schlumberger stated that several people were injured in the catastrophe; however there were no reported deaths. Various other reports noted 3 casualties due to the explosion. The leading reason of the occurrence of the accident was the leg jabbing out through the seabed, and it was reported a 100% loss. Later, The AD19 was restored and held for resale by Rig Masters.