WBCU: Optimizing displacement while protecting completion equipment

OWS has developed a range of tools that allow multiple opening & closing of ports to allow on demand communication to the annulus and to allow rotation of the upper string when carrying out wellbore fluid displacements.

The Weight Set Circulating Tool and the Weight Set Swivel Tool have been successfully applied on two different projects, and in this article, I will share some of the experiences we had using the tools.

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Topics: Wellbore CleanUp

The birth of a drilling scraper: Technology boosts WBCU efficiency

 

A revolution in Wellbore Clean Up as we know it is at hand. OWS is launching a tool designed to withstand the rigors of drilling with the finesse of wellbore cleaning. The technology allows the well to be drilled, and then the casing to be scraped on the same run, eliminating the need for a separate dedicated trip. The new DrillRdillo™ Drilling Scraper can reduce completion time by hours or even days. OWS’ Product Line Manager for Wellbore Clean-Up, Simon Leiper, tells you how it works.

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Topics: Drilling Equipment, Wellbore CleanUp, Casing Preparation, Down Hole

The benefits of wellbore clean-up and displacement experience

 

In previous blogs we have talked about how pre-job planning is key.  Although each well is different, there are fundamental similarities in each application. The question is how do we spot them? It all comes down to experienced personnel working on the project. Within the WellBore Clean-up product offering, there are a relatively low number of specialists worldwide that can offer the quality dedicated support required.

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Topics: Wellbore CleanUp

The evolution of the casing scraper

Casing scrapers are not new technology. A quick search on Google patents will bring up hundreds of types of scrapers dating back to the 1930s. In this post we will explore the evolution of this wellbore cleaning tool.

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Topics: Wellbore CleanUp

The 3 Rs of Wellbore Clean-Up

At school, we learned the three Rs: reading, writing and arithmetic. There are also three Rs of wellbore clean-up, namely Rotation, Reciprocation and ciRculation. So sit up straight, pay attention and spit out that gum because today you are going back to school.

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Topics: Wellbore CleanUp

Planning your Displacement & WellBore CleanUp

Are you well (pun intended) prepared?

The key fundamental aspect of a wellbore clean up is a proper pre-job planning. During a careful run-through of the elements involved, you’ll be able to identify if there are any limitations on rig & surface equipment, as well as any potential downhole ‘showstoppers’. With proper planning & implementation, an efficient and optimal cleanup and displacement is achievable. Lets look at the areas of concern in more detail.

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Topics: Wellbore CleanUp

How a circulation tool can boost annular velocity

A key factor in any wellbore cleanup/displacement operation is good annular velocity (AV). Why is this so?

To remove the mud residue from the tubulars, the chemicals need to be working at the optimum ‘contact time’, flow regime and AV. Additionally if the AV is not within the optimum range debris may not be circulated out of the wellbore, which compromise safe deployment and operation of the completion. 

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Topics: Wellbore CleanUp

Debris extraction technology can validate well cleanness

How do you know that all the debris is removed from the well?

Bottom line, it is very difficult to ensure that all debris has been removed from the wellbore. During the displacement phase, two surface measurements can be used to check the cleanliness of the fluid.Whilst filtrating the completion fluid, the Solids Content and/or the Nephelometric Turbidity Units (NTUs) will be measured to check the cleanliness of the fluid and by extension the well. This does not always mean the wellbore is fully clear of all debris however.

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Topics: Wellbore CleanUp

The importance of Magnets in a Wellbore Cleanup String

The use of magnets has proven to be a simple, cheap and effective way of removing metal debris from a well. Every WBCU operation should include magnets.

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Topics: Wellbore CleanUp

A novel approach to casing preparation after drilling

With increased well costs, particularly in deepwater wells, the benefits of combining operations in one trip are too good to ignore. With new advances in technology it is now possible to combine what was two trips into one, saving considerable time and money. Your drilling bottom hole assembly (BHA) can now be designed to allow casing preparation operations to be performed immediately post drilling.

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Topics: Wellbore CleanUp, Casing Preparation

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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