Cementing operations in North Sea wells can be complicated by the presence of complex lithologies, which can make typical techniques for establishing zonal isolation ineffective. Lifting heavier cement between the wellbore and the casing or liner in the region’s weak and unconsolidated formations might threaten the integrity of both the formation and the cement, especially in the region’s unconsolidated formations. The issues of shallow gas flow and lost circulation might add to the complexity of the situation. The successful use of the appropriate cement spacer technology is essential to the success of these activities. SealBond LT has proven to be effective in allowing an operator to reach the intended top of cement (TOC) in a number of Askepott wells in the Norwegian part of the Northern Sea.
Here’s a recent case history from Hart’s E&P.
