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 ...
Wellbore CleanUp (2)
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 ...
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 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.
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 ...
When drilling the well and running tubulars, the drilling fluid will have a higher density than the reservoir/formation fluids to prevent any hydrocarbon influx. Prior to running in the production completion, the well is displaced to a lighter density completion fluid to encourage the hydrocarbons to flow into the wellbore and up the production tubing. If any integrity issues in the connections ...
Premature completion failure caused by debris interfering with valves, electronics and hardware is an ever-present threat. A robust clean up of the BOP and riser is proven to reduce this threat and the non-productive time during the completion of the well. By careful planning and the use of modern, effective methods, your pre-completion clean-up process will save you time and money.
Our mums taught us the importance of brushing and flushing our teeth. It is a routine job that saves us a lot of agony and expenses. But are we just as mindful of how we treat our blowout preventers?
