Solar-Powered Wireless Load Cell Application in Kuwait's Field

Abstract Artificial-lift systems account for a major portion of Kuwait's heavy-oil production infrastructure. Among these, the sucker rod pump remains the most economical and robust method for moderate depths and viscous crude extraction. Reliable surface and downhole data are fundamental for optimizing pump efficiency, diagnosing mechanical issues, and preventing pump-off conditions. In SRP systems, load and position data form the basis of dynagraph cards, which are essential for determining pump fill, fluid level, and downhole pump performance. Sucker Rod Pump (SRP) units utilize a device called a load cell to input load readings into a variable speed drive (VSD) to control and monitor performance. The load cell provides load measurements of the downhole string, including the downhole pump and sucker rods. Position sensors such as Hall Effect sensors or an inclinometer provide position data to the VSD controller. The load cell and position sensors are traditionally hard wired into the VSD controller. In field operation, exposed sensor wiring is vulnerable to mechanical stress from high-wind events, ultraviolet degradation, and thermal cycling. Over time, insulation hardens and cracks, leading to intermittent or permanent signal loss. In addition, fine airborne dust typical of Kuwait's desert environment can infiltrate the connector head, causing corrosion, poor electrical contact, and eventual device failure. In Kuwait's harsh desert climate, several environmental factors contribute to the potential failure of wired load cell systems where high wind conditions can cause mechanical stress, leading to wire cuts or disconnections, and the prolonged exposure to extreme temperatures and sunlight accelerates material degradation, compromising insulation integrity and overall system reliability. Additionally, fine dust particles can penetrate the connector on the load cell side, resulting in corrosion, poor electrical contact, and eventual device malfunction. These challenges highlight the need for enhanced protective measures and robust design considerations to ensure long-term performance and durability of load cell systems operating in desert environments. To reduce downtime associated with wired load cell failures and maintain continuous pumping performance, a wireless load cell was installed on two pilot wells in Kuwait Oil Company (KOC) South Ritqa heavy-oil field, replacing the existing wired load cells. The wireless load cell is solar powered with a built-in battery and transmits both load and position data wirelessly to the VSD. A receiver module was installed on the VSD cabinet and wired into the VSD controller. The wireless load cell also contributes to KOC sustainability objectives by reducing the carbon and material footprint of field operations. Because the device generates its own power from an integrated solar module, it does not rely on the field electrical grid or diesel-powered generators. Removing buried cables eliminates the need for trenching, plastic conduits, and periodic cable replacement, reducing material consumption and waste. Fewer cable failures also reduce technician callouts, vehicle travel, fuel consumption, and safety exposure. Over the lifetime of a well, these reductions support lower-carbon and lower-maintenance field development. Each failure with the wired load cell and position sensor often leads to pump trips or extended shutdowns until engineers and technicians arrive to troubleshoot and replace cables. For a field with hundreds of wells, the cumulative downtime translates to significant deferred production and cost. The wireless system has less points of failure than the traditional wired system. It provides stable and reliable feedback of load and position data to the VSD. The traditional wired load cell only provided load data. The wireless load cell also includes position data which negates the need for Hall Effect sensors or an inclinometer, which are the devices typically used in SRP systems to provide position data to the VSD. Recognizing this limitation of the wired sensors, a wireless instrumentation was developed to be aligned with KOC's vision for digital transformation and reduced-maintenance field operations. The first implementation focused on wireless load and position transmission powered by self-sustaining solar energy—an ideal solution for Kuwait's high-insolation climate.