Sand screen failure

Many ClampOn monitoring systems are installed to detect changes in well conditions and provide early warnings of abnormal events.

In many wells, sand screens are installed to prevent sand from entering the wellbore and the downstream production system. However, well conditions can change unexpectedly. Even high-quality screens can fail. While such failures are rare, the consequences can be severe.

Importance of early sand detection

In some cases, ClampOn has monitored wells continuously for more than 10 years without detecting any sand production. However, conditions can change suddenly: a screen failure can result in a rapid increase in sand production, with large volumes of sand reaching the surface.

When this happens, early detection is critical. With a fully operational sand monitoring system, real-time measurements provide immediate insight into changing conditions. This enables operators to take proactive measures before pressure, temperature, and other well parameters are impacted by significant sand production.

Acoustic sand detection and real-time response

ClampOn’s sand monitoring technology detects acoustic signals from particles impacting the pipe wall and provides real-time indication of sand production. The system can trigger an alarm within seconds, allowing operators to take action at an early stage.

Over the past 30 years, ClampOn and its clients have experienced several screen failure events. These events are characterized by a clear and immediate increase in acoustic signal levels caused by large particles and high particle concentration. Under normal conditions, the screen is designed to retain formation particles above a defined size, for example around 100 microns. When the screen fails, larger particles and higher volumes pass through, generating strong acoustic signals that can be clearly observed in system trends.

If no action is taken during a screen failure, sand can accumulate and potentially fill the entire pipe and production system. Screen failures can occur without warning, making early detection essential. ClampOn systems provide reliable, real-time alarms that enable operators to respond quickly and reduce the risk of damage and production loss.