Frode Bjørheim

Frode Bjørheim is a specialist in drill pipe standards and lifting equipments with more than 30 years' experience in the oil & gas industry, both offshore and onshore.

Recent Posts

Classification versus strength of drill pipe

A question we're sometimes asked is: Why is drill pipe classified as “Premium” once it has been in the hole, and why is it all of a sudden 20% weaker than new? Well, it’s a bit like buying a new car. Once you have driven it out of the dealers shop, it’s classified as used. In today’s blog post, I’ll focus on the drill pipe body itself and not the connections.

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Topics: Drilling Equipment, Drilling

A brief overview of drilling equipment standards


In the past we didn't think it was possible to drill in some of the arduous environments we are now working in. Because of these conditions, high standards are required and are continuously updated to ensure we don't encounter equipment failures, safety issues and environmental problems.

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Topics: Drilling Equipment

Tonne vs ton when specifying handling equipment capacities & weights


Quite frequently we have customers asking us for handling equipment that is weighed in metric tonnes. The trouble is, almost all commercially available equipment used in the oil & gas industry is specified using the US imperial ton (or the short ton) and not the metric unit. It's important not to put the safety of an operation at risk because you assume that you're referring to the same definition of a unit. It can get quite confusing at times so, here we’re going to take a look at the differences between the units.

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Topics: Odfjell Well Services

How kelly-valves (drill stem valves) are maintained and serviced

The kelly-valve is a type of drill stem valve  used to prevent flow out of the drill pipe if a kick should occur during a tripping operation. In this post I will give you a "behind the scenes" look at how we maintain and service these small and friendly helpers in the drill string.

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Topics: Drilling Equipment

The NORSOK R-002 standard? Sorry, what was that again?

Three years ago, NORSOK issued a new standard for all players in the petroleum industry who are involved on the Norwegian Continental Shelf: R-002. Although this standard has been valid for some time now, the industry doesn’t seem to catch up. So to the delight of our readers, here is a short recap of the what, why and how.

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Drilling thread types for dummies

At Odfjell Well Services we constantly hear from people who ask us why certain drill pipes don't go together. Sometimes these are experienced drillers who have been in the industry for years. So here comes a post with the need-to-know basic stuff about drilling connection types. Hopefully it will be of use to you - whether you're a rookie or a veteran.

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Topics: Drilling Equipment

How to avoid overtorque of drill pipe

As the ancient Babylonian adage goes, the gods do not deduct from man's allotted span the hours spent in fishing. Fishing for broken-off drill strings in wellbores, however, is another business. In this blog post I’d like to address a common cause of twist-offs, namely overtorque of drill pipe.

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The benefits of modified slip and elevator recesses

Drillers have been using slip and elevator recesses on most spiral drill collars for years. However, after short time in use, the need of lift-subs occurs. The main reason is wear on the connection OD during drilling. Making a switch from the standard API recess to a modified mutual drill pipe recess will reduce Bottom Hole Assembly handling time significantly, and reduce the need of personnel in red zone.

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The difference between standard and high torque connections

As oil companies started to drill deeper, faster and in more demanding environments, the need for enhanced torsional strength arose. Engineers started to develop the standard API rotary shouldered connections (RSC) that have evolved into the kind we today know as double shouldered or high torque connections.

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Why hardbanding of joints can help prolong drillstring life

Drill pipe tool joints are tough as steel, but before you send them down hole, be sure they have the proper protection. Hardbanding does the job pretty well.

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Topics: Drilling Equipment

A blog from Odfjell Well Services

Odfjell Well Services (OWS) is an international well service company, providing world class TRS, rental and well intervention services worldwide.


Visit www.odfjellwellservices.com

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