Resman reservoir tracers

Temperature rating

Water tracers: Up to 200 degC [392 degF]
Gas tracers: Up to 400 degC [752 degF]

Applications

• Reservoir monitoring via acquisition of mass-transfer evidence for
  • breakthrough determination
  • flow pattern mapping
  • understanding connection significance
  • reservoir sweep assessment
  • acquisition of dataset for history matching and model updates
• Measurement of enhanced oil recovery (EOR) treatment efficiency through determination of oil saturation before and after treatment
• Update of recovery factor estimates
• Early qualitative detection of flow assurance issues
• Evidence-based flow verification to support reserves estimation

Benefits

• Maximize production performance and improve recovery by identifying bypassed zones and taking corrective measures
• Acquire important data for infill target planning, especially in mature fields
• Reduce water production by optimizing injection strategy
• Improve accuracy of predictions
• Validate reservoir models with reliable data to support decision making
• Optimize production strategies by evaluating the connectivity between different wells, areas, and reservoir layers
• Accelerate reservoir management decisions when used in conjunction with Recovery Express™ rapid recovery solutions

Features

• Robust parts per trillion (ppt) analysis capabilities—approaching parts per quadrillion (ppq)—for ultimate resolution, injection efficiency, and long-term monitoring capability
• Flow measurement at reservoir conditions, avoiding induced uncertainties
• No external power requirements for propulsion, interrogation, or communication
• As many as 70 unique signatures—the largest number to date in the industry—for higher-resolution monitoring applications in the most complex wells and field development projects
• Job designs based on industry-leading experience
• Nonradioactive chemicals
• Industry-leading connectivity, contribution, and sweep measurement workflows

How they improve performance

Introduced into the reservoir through an injector well, Resman™ reservoir tracers travel with the fluid and are later detected at production wells. Their arrival confirms connected pathways, reservoir sweep, and residual oil saturation—enabling evidence-based reservoir modeling.

Use these tracers for

• assessing injector-to-producer connectivity
• evaluating enhanced oil recovery (EOR) efficiency and sweep
• calibrating reservoir simulation models and history matching.

How they work

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.

Injection performance monitoring
The water or gas tracer is pumped into the injector flow stream, either directly or through an injection port. It is carried passively through the reservoir and retrieved at the production wellhead where the log of its journey is downloaded, providing information on the reservoir structure and injection efficiency. Results are subsequently presented via our Tracer Track™ visualization solution, where applicable.

Interwell EOR service
This service is similar to interwell monitoring and is used to enhance EOR treatment efficiency through determination of residual oil saturation before and after treatment. Two separate water tracers—with a known difference in affinity to oil—are injected. Proprietary analysis of the results enables improving your recovery factor.

Single-well EOR service
This service is similar to the interwell EOR service, but it is performed on a producer for near-well interrogation. A specific Resman reservoir tracer type is bullheaded into the producer, and during a shut-in period, it splits into two separate tracers with a known difference in affinity to oil. When the well is flowed back, we can perform the same analysis as with the interwell EOR service.

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