Types of Sucker Rod Pumps: Fishable vs. Non-Fishable

Introduction

The sucker rod pump is a crucial component in oil well operations, providing efficient and cost-effective solutions for extracting oil from the ground. This type of tubing pump is assembled on the surface and run into the well, eliminating the need to lift the tubing and reducing both operation time and cost. By utilizing a sucker rod pump, oil well operators can significantly improve the overall efficiency of their operations.

One of the key advantages of using a sucker rod pump is its ability to reduce the frequency of turning on and off tubing threads. Traditional methods often require frequent adjustments to ensure proper functioning, resulting in increased downtime and decreased productivity. However, with a sucker rod pump, this issue is minimized as it eliminates the need for such constant monitoring.

Additionally, the sucker rod pump helps prolong the run life of tubings. The continuous lifting action provided by this type of pump reduces stress on the tubing string, minimizing wear and tear over time. This not only extends the lifespan of the tubings but also reduces maintenance costs associated with replacing worn-out components.

Furthermore, there are different types of sucker rod pumps available in the market. These include fishable types (THC and THM) and non-fishable types (THD). Fishable types are designed to be easily retrievable from wells if they become stuck or damaged during operation. On the other hand, non-fishable types are not intended to be retrieved once installed. Each type has its own set of applications and advantages depending on specific operational requirements.

Benefits of Sucker Rod Pumps

The sucker rod pump offers several benefits that contribute to improved efficiency and cost-effectiveness in oil well operations. One of the key advantages is the reduction in the need to lift the tubing, which results in significant time and cost savings. Traditional methods of lifting the tubing can be labor-intensive and time-consuming, requiring specialized equipment and personnel. By utilizing a sucker rod pump, operators can eliminate this step altogether.

By eliminating the need for lifting the tubing, the sucker rod pump streamlines the operation process, allowing for faster and more efficient oil extraction. This increased efficiency translates into cost savings for oil well operators as they can reduce their operational expenses. Additionally, by reducing the reliance on heavy machinery for lifting purposes, maintenance costs are also minimized.

Another important benefit of using a sucker rod pump is its ability to reduce wear and tear on tubings by eliminating frequent turning on and off of tubing threads. Tubing threads can experience significant stress during these operations, which can lead to premature failure and costly repairs or replacements. The reduced frequency of turning on and off tubing threads provided by the sucker rod pump helps prolong the run life of tubings.

By minimizing stress on tubings, operators can prevent premature failures and extend their lifespan. This not only saves money but also improves productivity as there is less downtime due to tubing failures. The prolonged run life of tubings also contributes to overall cost-effectiveness since operators do not have to frequently replace worn-out tubings.

In addition to these general benefits, it is important to consider the specific types of sucker rod pumps available for oil wells: fishable and non-fishable types. Fishable types such as THC (tubing hung complete) and THM (tubing hung mechanical) are designed with features that allow them to be easily retrieved from the wellbore if necessary. This makes them suitable for situations where retrieval may be required due to issues such as pump failure or blockage.

On the other hand, non-fishable types like THD (tubing hung deep) are not designed for easy retrieval. They are typically used in situations where the risk of pump failure or blockage is low, and the focus is on long-term performance and efficiency. Non-fishable sucker rod pumps offer advantages such as increased pump efficiency, reduced tubing movement, and improved overall system reliability.

Fishable vs. Non-Fishable Sucker Rod Pumps

When it comes to selecting a sucker rod pump for your oil well, one important consideration is whether you need a fishable or non-fishable type. Fishable sucker rod pumps include THC and THM types, which are designed to be easily retrieved from the wellbore in case of a fishing operation. These pumps provide flexibility and ease of maintenance, making them suitable for various oil well applications.

The THC and THM fishable sucker rod pumps are specifically engineered to withstand the demanding conditions of oil wells while still being easily recoverable if needed. This feature is particularly valuable in situations where there may be a higher risk of pump failure or blockage, such as in wells with heavy paraffin buildup or high gas content. In these cases, having a fishable pump allows operators to quickly remove the pump from the wellbore without costly interventions or workovers.

One advantage of fishable sucker rod pumps is their modular design, which allows for easy replacement of individual components. This means that if a specific part fails or needs maintenance, it can be replaced without removing the entire pump from the wellbore. This not only saves time but also reduces costs associated with downtime and equipment removal.

On the other hand, non-fishable sucker rod pumps include the THD type. These pumps are not designed for easy retrieval from the wellbore during a fishing operation. However, they offer their own set of advantages that make them suitable for certain applications where fishing operations are less likely.

Non-fishable sucker rod pumps are often used in wells where there is minimal risk of pump failure or blockage. They provide a cost-effective solution for operators who do not anticipate needing to retrieve the pump from the wellbore frequently. By eliminating the need for fishability features, these pumps can be more streamlined and efficient in their design.

Additionally, non-fishable sucker rod pumps are typically more compact and require less maintenance compared to fishable pumps. This can result in cost savings over the life of the pump, as fewer replacement parts and interventions are needed. Operators can rely on these pumps for extended periods without the need for frequent inspections or repairs.

In conclusion, choosing between a fishable and non-fishable sucker rod pump depends on the specific requirements of your oil well. Fishable pumps provide flexibility and ease of maintenance, making them ideal for wells with a higher risk of pump failure or blockage. Non-fishable pumps, on the other hand, offer a cost-effective solution for wells where fishing operations are less likely. By understanding the applications and advantages of each type, oil well operators can make an informed decision that optimizes efficiency and cost-effectiveness in their operations.