CASE STUDY:

DOWNHOLE INSIGHT™ NUWAV™ CAMERA IDENTIFIES OBSTRUCTIONS IN THE WELL, DECREASING CRITICAL 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. 

Case Study:

Downhole InSight nuWAV Shows Collapsed and Parted Casing and Stub Directly Below

CONDITION:

An operator in the middle of a new project called after encountering challenges preventing them from forward progress. They indicated that the well would circulate, therefore we recommended running tubing to the area of interest and deploying the camera down the tubing simultaneous to circulating.

PROBLEM IDENTIFICATION:

The operator suspected that remedial efforts/operations had gotten outside of the casing and needed to verify whether fishing operations were inside or outside of the casing around 3330’.

SOLUTION & RESULTS:

The camera run determined that the casing had collapsed causing fishing efforts to side-track into open hole 3328’. We were also able to locate the point where the casing split open with the tubing at inside 3333’. Armed with these visual diagnostics, the operator has confidence in their decisions moving forward and reducing unforeseen risk.

ADDITIONAL BENEFITS:

The operator was able to inspect other problem areas of the wellbore while running in to inspect the location of the fish.

Additionally, the operator was able to save on additional NPT relating to additional fishing operations (in this specific case, approximately $10k/day).