Resman production tracers

Temperature rating

Up to 200 degC [392 degF]

Applications

Continuous flow monitoring at the sandface for

• long-term production and reservoir surveillance
• production allocation and management
• verification of cleanup efficiency and well design
• workover and intervention planning
• improved field development via identification of interwell connectivity and optimization of offset well placement and completion design
• history matching and reservoir and production model improvement and validation
• hydraulic fracture monitoring
• characterization of inflow control devices (ICDs)

Benefits

• Enhanced recovery via monitoring of well performance at the zonal level
• Ability to monitor inflow in environments with limited access, such as subsea, multilateral, and ESP wells
• Improved intervention planning by high-grading targets during production
• Streamlined project execution by derisking of marginal projects through early verification of well design and well path choices
• Identification of events such as water or gas breakthrough, formation collapse, plugging, and deposition at the zonal level
• Improved reserves estimation via evidence-based flow verification
• Intelligent completion enhancement through direct measurement
• Minimal transport costs and HSE concerns compared with production logging

Features

• No external power requirements (i.e., no batteries or wires), which eliminates complexity and associated failure modes
• Flow characterization under natural flowing conditions
• More than 135 unique signatures—the largest number to date in the industry—for higher-resolution monitoring applications in the most complex wells and field development projects
• Robust parts-per-trillion (ppt) analysis capabilities—approaching parts per quadrillion (ppq)—for ultimate resolution
• Nonradioactive chemicals

How they improve performance

Resman™ production tracers are embedded in the lower completion and released over time to reveal zonal inflow distribution. They deliver a passive time-series record of zonal inflow—captured without intervention—even in challenging completions, including wells with ICDs, AICDs, ESPs, and intelligent or multilateral systems.

Quantify contributions from individual zones over time to optimize artificial lift or well performance. Extend inflow tracking beyond the reach of optical fiber or conventional logging—especially in subsea or retrofit wells.

How they work

The tracer is mixed with a polymer specifically engineered to suit the well environment. This mixture is molded into rods—typically 110 × 7 × 2 mm in size—which are integrated into the completion string in various ways. Usual integration methods are inside the drainage layer of wire-wrapped screens or by using slip-on carriers on the production liner.

When the rods come into contact with their target fluid (oil, water or gas), they start to release the tracer by diffusion, which provides a suitable lifetime for a production scenario. The tracers are sampled at surface, enabling monitoring of zonal inflow. 

Resman production tracer signals are plotted against time, a dissimilar tracer, or both, for advanced analysis. Appearance of the tracer in a different place from where it was introduced provides proof of mass transport.

The value comes from interpreting its journey, a task that we have simplified with advanced digital workflows that use the direct measurements as input.

Proprietary interpretation methods provide advanced insights into zonal performance. Results are subsequently presented via our Tracer Track™ visualization solution, where applicable.

Additional information

Scalable solutions for analysis

• Centralized lab facility in Norway for ultimate parts-per-trillion (ppt) performance
• Resman Express™ mobile lab services for rapid results at the wellsite with parts-per-billion (ppb) performance, or extraction of tracer from produced fluids for ease of transport