Drive solutions for demanding workover operations

Workover operations play a crucial role in the oil and gas industry, especially when it comes to restoring or increasing the productivity of a well.

Technologies used in workover operations

Specialized technologies and tools are required for workover operations to repair the wellbore. One central technology commonly used is coiled tubing. This is a continuous steel pipe wound on a drum that can be inserted into the wellbore without joints. Coiled tubing is used for various tasks, such as injecting chemicals, removing deposits, or sealing leaks.

Another important tool is wireline and slickline technologies. These thin, but extremely durable cables are lowered into the wellbore to deploy measurement instruments or tools. Wireline is often used to collect data about the wellbore's condition, while slickline is used for mechanical tasks such as installing or removing valves and other components.

Cementing involves pumping cement under pressure into leaking or damaged areas of the wellbore. This technique is commonly used to seal leaks in casing or stop unwanted fluid flows. The cement hardens and forms a barrier that restores the integrity of the wellbore.

Mixing and hydration units are used to create cement mixtures and chemical solutions on-site and pump them into the wellbore. They ensure that the correct chemical properties are available for the repair processes.

Drive systems and power supply for workover operations

Since wellbore repairs often take place in remote areas or under extreme conditions, the engines and generators driving the tools must not only be powerful but also robust and reliable.

For conducting workover operations, mobile power units are often required, which are flexible and portable to be deployed in hard-to-reach regions. These mobile solutions provide a reliable power supply and are specifically designed for operation in harsh environmental conditions.

Another key aspect of the drive systems for workovers is their power and efficiency. These engines must be capable of driving a variety of tools simultaneously without sacrificing efficiency. They often offer high power density to operate the required equipment safely and in a controlled manner. Modern diesel generators and electric motors are commonly used due to their reliability and ability to work continuously even under challenging conditions.