xSight smart intervention optimization services provide real-time data from downhole sensors during pipe-conveyed wellbore intervention operations. The xSight service offers critical downhole mechanical and dynamic parameters such as weight, torque, bending moment, pressure, temperature, and vibration levels. This data helps you make adjustments to optimize intervention operations. The data is displayed at the rig floor and may also be sent offsite if you are interested in real-time advisory services from our BEACON? remote operations support center, or for immediate review at your office.
In deep or highly deviated wells, surface gauges do not adequately reflect downhole reality. Friction over the length of the drillpipe changes how forces at the bottom of the hole are reflected at the surface. The xSight optimization service solves this problem by placing gauges at the end of the toolstring, giving you clear insight into what is happening downhole.
xSight optimization services combine well intervention tools such as mills, fishing tools, and wellbore cleanup tools with bi-directional downhole communication technology to provide real-time actionable data to the rig site. Having live downhole data gives you a sense of touch that is impossible to obtain with surface gauges alone. With accurate data, you can improve certainty and accuracy, and help drive down nonproductive time (NPT). xSight services can increase an your success rate under the most challenging downhole conditions, reducing runs, improving results, and ultimately helping control costs.
The xSight orientation service uses gravity toolface measurements that can be easily interpreted to orient the bottom-hole assembly in operations such as whipstock casing exits, where the service enables orientation of the whipstock so you mill the window in the correct direction. xSight optimization and orientation services can be combined with our casing collar locator service to deliver a single-trip solution for whipstock casing exits.
Contact your Baker Hughes, a GE company, representative or visit bhge.com/xSight to learn how to improve certainty and reduce NPT with real-time downhole insight.
Applications
Fishing
Milling
Whipstock casing exits
Packer and well barrier setting and retrieval
Wellbore cleanup
Torque-and-drag model verification
Features and benefits
Real-time downhole sensor data
Increases job efficiency through immediate detection of dysfunction
Reduces uncertainty and mitigates risk of NPT by communicating weight, torque, bending moment, pressure, temperature, and vibration data
Tension/compression data
Confirms tool or fish attachment to avoid wasted trips
Provides accurate overpull readings to help avoid NPT
Provides confirmation of jarring
Accurately relates potential scraping friction problems during wellbore-cleanup runs
Torque, compression, equivalent circulating density, and RPM readings
Improve milling efficiency
Help with early detection of packoff
Reduce the risk of prematurely damaging mills
Improve efficiency during section milling and whipstock exits
Combined orientation, optimization, and CCL capabilities
Enables single-trip whipstock casing-exit operations
Improves reliability and cuts costs
Case Study
xSight smart intervention optimization service were used for a high-risk deepwater Gulf of Mexico workover project. The objective was to remove a retrievable high-pressure/high-temperature isolation packer set at 26,254 ft (8,002 m) measured depth (MD) to allow the operator to abandon and recomplete the well above a failed gravel pack.
The operator used the downhole data acquisition tools to measure the force being applied to the fish in real time. This was a major concern since the extreme depth and well profile meant that surface gauges would be inaccurate. On the first run—to retrieve the seal assembly and anchor latch—the benefit of xSight real-time measurements was highlighted immediately. Upon tagging up on the seal assembly, the downhole real-time data measured more than 40,000 lb (18,144 kg) of force being applied on the fish before the surface gauge indicated the seal assembly was engaged. Without these readings, the rig would have continued to set down weight and could have easily damaged the weaker 23/8-in. regular connection used in the fishing bottom hole assembly (BHA).
After identifying the large discrepancy, the operating team, including xSight engineers, used real-time xSight service readings as the primary verification instrument and the other gauges as a backup. They verified that the seal assembly was engaged with the type “D” spear and rotated the seal assembly under tension 12 to 13 rounds to release the anchor latch. At surface, it took more than 24 full rotations before the downhole sensors measured any torque going through the BHA to the seals. At exactly 36 rounds at surface, the torque fell off to zero while the tension reading dropped sharply and measured a tension of ~300 lb (136 kg) force still acting on the toolstring. This additional weight was due to the seal assembly (expected weight was 275 lb [125 kg] downhole) hanging from the spear. The additional weight confirmed the seal assembly had been released correctly and verified the successful retrieval before pulling out of hole.
After removing the seal assembly, the team removed the isolation packer. The downhole sensor sub and SC-1? packer retrieval tools were picked up and run in hole. The xSight service again identified that the packer was engaged before anything could be seen at surface. The xSight service measured all of the downward and upward shear indications, confirming the packer was in the release position. After picking up to 65,000 lb (29,484 kg) overpull, the last shear indication was identified. The workstring overpull fell off and the work string began moving up hole. The team again used the xSight service to measure the additional weight of the packer hanging from the retrieval tool. After picking up slightly, the team confirmed an additional 1,800 lb (816.5 kg) of tension hanging from the BHA. The xSight downhole readings verified the packer had come free from the casing and was attached to the workstring. Without this confirmation, the operator would likely have damaged the workstring, potentially pushing it to the point of failure.
石油圈
