Case Study

Downhole InSight NuWave Caerma identifies obstructions in the well, descreasing cirtical NPT for the customer

CHALLENGE:

During the pre-deployment phase of well operations, an operator found that although the well was circulating, there was an object stuck inside the casing. The operator identified an obstruction at 7,140 ft and needed to confirm that the integrity of the casing at that depth was not compromised. After several unsuccessful attempts to pass the obstruction with wedges and mills they concluded a visual camera was needed downhole.

SOLUTION:

It was determined a downhole camera system would be the most effective way of confirming the obstruction. Renegades NuWAV Camera, part of its’ Downhole InSight suite of tools, was deployed while circulating with 10.0 ppg brine. NuWAV provides real time video images of downhole activity over mono- or multi-conductor wireline. NUWAV visually confirmed the casing was both obstructed at 7,135 ft and collapsed with the casing stub below. Visible threads indicated that the pin end of the casing was broken and laying across the stub.

RESULTS:

With conclusive visual evidence from the NuWAV camera, the customer was able to confidently mill the threaded debris, re-enter the stub and continue wellsite operations. The action by Renegade stopped critical NPT and alleviated the risk of further well issues. Additionally, the camera was able to identify large debris, as well as identifying possible areas of concern that could present tight spots during drilling, running casing, or completing the well.