Well intervention is the process of performing maintenance or corrective activities on an oil or gas well in order to improve the well's performance, extend the well's lifespan, or restore production. These goals can be accomplished by increasing the well's lifespan, increasing the well's performance, or restoring production.

There are a lot of different reasons why effective intervention is important, including the following ones:

Maintenance or repair of the manufacturing processIt is possible for oil and gas wells to experience a decrease in production over the course of their lifetimes as a consequence of a number of different factors, such as formation damage, scale buildup, or mechanical problems. This is a risk that is inherent in the industry. Well intervention can assist in the process of restoring production levels in a number of different ways, including the elimination of obstructions, the repair and replacement of broken down equipment, and the enhancement of wellbore connectivity.

Another way that well intervention can help increase recovery is by improving reservoir management. This can be accomplished by doing things like installing downhole pumps or stimulating the reservoir. This is just one of the many ways that well intervention can help increase recovery.

Monitoring and analyzing a well's performance can also be accomplished through the use of well intervention. The installation of downhole sensors or the collection of fluid samples, for instance, are both viable options for achieving this goal. One additional method involves logging the data that is collected by the sensors.

An engineer who specializes in well intervention is the person who is responsible for designing, planning, and carrying out the processes that are involved in well interventions. This involves analyzing data obtained from the well in order to identify potential issues, developing solutions in order to address those issues, and supervising the implementation of those solutions in order to fix the issues that were identified. It is necessary for the engineers who work on well interventions to collaborate closely with other professionals, such as drilling engineers, production engineers, and geoscientists, in order to ensure that the well intervention is carried out in a manner that is safe, efficient, and effective. This is because it is only possible to carry out the well intervention in this manner.

The specific kind of well intervention that is being done as well as the well's individual requirements both have an effect on the kinds of tools and machinery that are needed for the well intervention. In spite of this, the following is a list of some common types of equipment used in well intervention:

Coiled tubing units: Coiled tubing is a flexible pipe that can be used to deliver tools, chemicals, or fluids into the wellbore. Coiled tubing units are also known as coiled tubing strings. Strings of coiled tubing are another name for individual coiled tubing units. Coiled tubing units are utilized for a variety of well intervention procedures, including injecting fluids, carrying out cleanouts, and other procedures. These procedures include carrying out various well interventions.

Wireline units: A wireline is a cabling system that can be used to lower tools and equipment into a wellbore. Wireline units are also known as downhole cables. The term "wireline" can also refer to the actual wireline units. Wireline units are capable of performing a variety of tasks, including interventions such as logging and plug setting, in addition to perforating and other similar operations.

The process known as "snubbing" involves inserting pipe into the wellbore while the wellbore is under pressure. Snubbing units:Pipe is inserted into the wellbore as part of the process known as "snubbing."Snubbing units are typically required in order to successfully carry out more involved well interventions, such as removing wellhead equipment, setting packers, and performing workovers.

Hydraulic workover units: Hydraulic workover units make use of hydraulic pressure in order to carry out workover operations such as switching out tubing or repairing downhole equipment.

When it comes to the valve that is used during the process of well intervention, there are many different kinds of valves that can be used depending on the operation that is being carried out. The valve that is used will be determined by the kind of operation that is being performed. During wireline operations, for example, a wireline valve is used to control the flow of fluids in the production tubing. On the other hand, during coiled tubing or snubbing operations, a surface-controlled subsurface safety valve (SCSSV) is used to control the flow of fluids in the production tubing. Wireline valves and SCSSVs are both referred to as wireline control valves. These two valves are both examples of mechanisms that control the flow of fluid. The choice of the valve will be determined by the specific requirements of the well as well as the type of intervention that is being carried out.