Common Well Interventions
Common good interventions like rigless well intervention include cleanout and stimulation operations. They are performed to improve the production performance of quitting wells or increase production from wells in decline. For example, in one case, a significant oil and gas producer decided to clean out well after three years of production. This intervention was performed to restore production from well, which had decreased significantly. The reason for the cleanout was that slackline drift indicated that a restriction was present in the tubing.
Cable Operations
Wireline is one of the most common types of cable used in oil and gas exploration and production. This flexible metal cable is used for various healthy completion operations, conveying downhole tools, and logging. They are typically cheaper and require less space and equipment than coiled tubing. However, wireline is not ideal for long lateral wells. These cables are best used for small and deep wells. In addition, they can be damaged easily during rig-in and rig-out operations.
The installation method involves a wireline pulled out of the well to the level above the intervention valve 14. Once the wireline reaches this height, the valve is closed, and the hydrocarbons are flushed out of the area above the valve. Next, the tool and wireline are brought up, and the procedure is repeated as many times as necessary to complete the intervention. Afterward, the hose can be connected to equipment for stimulation or inhibition of the well.
Snubbing
One of the well interventions at PRT Offshore deepwater well access is snubbing. Snubbing is a method of inserting tools into a well while under pressure. It prevents the use of kill weights, such as fluids. It also allows a pipe to be placed in a well that would otherwise be unrestrained. To snub a pipe, its weight must be greater than the force of pressure acting on its cross-sectional area. This will cause the line to fall into the excellent bore.
This technique uses a snubbing unit, which is hydraulically operated. This device contains slips and a BOP stack, which is used to insert, pull, and extract the tubing. The unit also allows for staging the tubing by introducing different sections of the BOP stack into the well. Next, the tubing connections are produced using two sets of rams. Lastly, the preventers are closed in sequence. At least one must be closed to contain the good bore’s pressures.
Coiled Tubing
The coiled tubing unit is a self-contained multi-use machine that performs almost all the functions of a conventional service rig. In addition, this unit is a versatile machine that is not limited by the jointed pipe. The coiled tubing unit has two models: the Picker and the Arch. The Arch features a vertical elevator with a horsehead attached to the top and an injector that hangs by a winch line. The Picker unit features a horsehead attached to the injector and a picker bolted directly to the injector.
Coiled tubing is also helpful in dispersing fluids to specific locations. For example, it can be used to cement perforations and conduct chemical washes of downhole components. The advantage of this method is that the operator can use multiple fluid strings on the same coiled tubing, thereby reducing the cost of deployment. Coiled tubing also allows for using complex pumps with various strings, making them more cost-effective.
CT
CT guidance has become an integral part of many interventional radiology procedures. These procedures use CT to provide cross-sectional visualization and localization of the interventional equipment. Consequently, the radiation dose associated with these procedures must be carefully tracked and monitored. Furthermore, the use of CT is mandatory, so it is imperative to adhere to national reference dose levels.
Tablet interventional solution combines CT imaging and a dedicated imaging tool to support the broadest range of CT-guided interventions. Guide&GO is designed to simplify the user experience, resulting in a shorter learning curve and shorter training times. In addition, the interface allows interventionists new to the field to focus on clinical workflow instead of the technical aspects of the intervention system. This reduces the risk of system malfunctions, leading to delays in completing the intervention.
Remote-Actuation Completion Equipment
Developing remotely actuated packers and sleeve retraction tools have helped reduce the time and complexity associated with common suitable interventions. These tools have significantly reduced the risk of environmental and safety concerns by eliminating the need for wireline or coiled tubing interventions. Remote-actuated tools have also reduced the nonproductive time associated with suitable interventions, saving time and money. Remote actuation completion equipment has been used in 14 wells without failure. Further work is scheduled in South America and the Philippines later this year. The cost savings associated with remotely-actuated tools are estimated to be as high as US$1 million per well. In addition, they eliminate the need for coiled tubing mobilization, a costly process that can cost as much as US$1 million per well.
React technology uses a signaling method that enables the remote activation of downhole completion equipment, avoiding costly intervention operations. This innovative technology was developed by Omega, which has performed more than 100 completions using ReACT equipment. The company has a 100% remote actuation success rate. It is a proven, reliable solution that has the potential to revolutionize the oil and gas industry. Its unique actuation technology makes it a valuable tool in various applications.
