DHVI

DHVIs Capture E-Line Camera is capable of being deployed in combination with a variety of logging sensors, allowing for extensive investigation options during a single run-in hole. During wireline pump-down operations, customers began experiencing abrupt hang-up depths deploying their perforating BHA. With a full wireline and frac spread waiting on location, DHVI was quickly dispatched to determine the cause.

With the ability to pump the camera down using the wireline unit already rigged up on the well, no additional equipment was required to mobilize. Based on the well history provided, and understanding of the current operation, DHVIs recommendation was to run a GR, CCL, and Temperature tool in tandem with the camera. The synergy between these tools and the deployment method would lead to an efficient operation. Depth correlation could be provided from the GR and CCL during the initial run in the hole, tying into the marker joint. Tool response on the CCL would ensure movement while pumping down. Using optically clear fresh water for the pump down would flush the wellbore for the camera. Storage of the freshwater into formation would identify a potential leak point using the temperature tool.

With the hang-up depth from the previous run-in mind, the temperature and CCL response were monitored closely while pumping down. It became immediately clear in the temperature data as the tool passed a severe leak point in the casing. Shortly thereafter as the pump down sub crossed the leak point, all tool movement was lost. It was apparent that all feed rate was exiting this breach and was the root cause of the hang-up. Having a precise depth to inspect, but not yet knowing what caused the breach, the Capture E-Line camera was then logged into position. A longitudinal split was discovered on the Sideview camera, directly on the high side of the hole, with erosion indicating fluid and sand entry. With the tool in position looking directly at the split, continuous high frame rate video was able to observe fluid and particulate entry, further confirming the extent of the leak. High-resolution images were streamed directly from the well site to the office for the client to observe in real-time. Using this data, and having a CCL log from the same pass, the client was able to move forward with the possibility of setting a casing patch.