A Tracer Injection-Test Approach to Reservoir Characterization: Theory and Practice

2005 ◽  
Author(s):  
Fernando Samaniego ◽  
Hector Pulido ◽  
Jesus Rivera ◽  
Rodolfo Camacho Velazquez ◽  
Victor Hugo Perez Olave ◽  
...  
Keyword(s):  
Reservoir Characterization ◽  
Theory And Practice ◽  
Tracer Injection ◽  
Injection Test

A Tracer Injection-Test Approach to Reservoir Characterization: Theory and Practice

2005 ◽  
Author(s):  
Fernando Samaniego ◽  
Hector Pulido ◽  
Jesus Rivera ◽  
Rodolfo Camacho Velazquez ◽  
Victor Hugo Perez Olave ◽  
...  
Keyword(s):  
Reservoir Characterization ◽  
Theory And Practice ◽  
Tracer Injection ◽  
Injection Test

Optimization of Tracer Injection Schemes for Improved History Matching

2021 ◽  
Author(s):  
Hsieh Chen ◽  
Hooisweng Ow ◽  
Martin E Poitzsch
Keyword(s):  
History Matching ◽  
Large Scale ◽  
Reservoir Characterization ◽  
Statistical Significance ◽  
Scale Up ◽  
Production Optimization ◽  
Tracer Injection ◽  
Full Field ◽  
Multiple Data ◽  
Mean Square Errors

Abstract Interwell tracers are powerful reservoir surveillance tools that provide direct reservoir flow paths and dynamics, which, when integrated with near real-time production optimization, can greatly improve recovery factor, and return on investment, the so-called "Advanced Tracers System" (ATS). Applying full field ATS is attractive for resource-holders, especially for those with large waterflood operations. However, to scale up ATS to cover large fields with potentially tens to hundreds of injectors and producers, the required unique tracer variations ("barcodes") and materials and associated analysis may increase rapidly. Here, we explore different tracer injection schemes that can acquire the most information while using reduced numbers of tracers, thereby controlling costs in field operations. We tested the designs of various modified tracer injection schemes with reservoir simulations. Numerical experiments were performed on synthetic fields with multiple injector and producer wells in waterflooding patterns. Two tracer injection schemes were considered: In Scheme 1, all injectors were injected with unique tracers representing the most information-rich case. In Scheme 2, some injectors were injected with the same tracers ("recycling" the same barcodes), and some injectors received no tracer injection ("null" barcodes). Production and tracer breakthrough data was collected for history matching after waterflooding simulations on the synthetic fields. The ensemble smoother with multiple data assimilation with tracers algorithm was used for history matching. We calculated the root-mean-square errors (RMSE) between the reference data and the history matched production simulation data. To improve the statistics, 20 independent testing reference synthetic fields were constructed by randomizing the number and locations of high permeability zones crossing different injectors and producers. In all cases, the history matching algorithms largely reduced the RMSE thereby enhancing reservoir characterization. Analyzing the statistical significance with p-values among testing cases, first, as expected, the data mismatch is highly significantly lower after history matching than before history matching (p < 0.001). Second, the data mismatch is even lower when history matching with tracers (both in Scheme 1 and 2) than without tracers (p < 0.05), demonstrating clearly that tracers can provide extra information for the reservoir dynamics. Finally, and most importantly, history matching with tracers in Scheme 1 or in Scheme 2 result in statistically the same data mismatch (p > 0.05), indicating the cost-saving "recycling" and "null" tracer barcodes can provide equally competent reservoir information. To the best of our knowledge, this is the first study that evaluated the history matching qualities deriving from different tracer injection schemes. We showed that through optimal designs of the tracer injections, we can acquire very similar information with reduced tracer materials and barcodes, thus reducing costs and field operational complexities. We believe this study facilitates the deployment of large-scale reservoir monitoring and optimization campaigns using tracers such as ATS.

Tritium tracer Injection test at Wayang Windu Geothermal Field, West Java, Indonesia

Geothermics ◽  
2020 ◽  
Vol 83 ◽  
pp. 101718
Author(s):  
Dwiyogarani Malik ◽  
Zainal Abidin ◽  
Bambang Pramono
Keyword(s):  
Geothermal Field ◽  
West Java ◽  
Tracer Injection ◽  
Injection Test

Estimation of alphaL, Velocity, Kd and Confidence Limits from Tracer Injection Test Data

Ground Water ◽  
1997 ◽  
Vol 35 (6) ◽  
pp. 1066-1076 ◽  
Author(s):  
James Broermann ◽  
R.L. Bassett ◽  
Edwin P. Weeks ◽  
Mark Borgstrom
Keyword(s):  
Test Data ◽  
Confidence Limits ◽  
Tracer Injection ◽  
Injection Test

scholarly journals GPR-inferred fracture aperture widening in response to a high-pressure tracer injection test at the Äspö Hard Rock Laboratory, Sweden

2021 ◽  
pp. 106249
Author(s):  
Justine Molron ◽  
Niklas Linde ◽  
Philippe Davy ◽  
Ludovic Baron ◽  
Caroline Darcel ◽  
...  
Keyword(s):  
High Pressure ◽  
Hard Rock ◽  
Fracture Aperture ◽  
Tracer Injection ◽  
Injection Test ◽  
Rock Laboratory

Addressing the Content Vocabulary With Core: Theory and Practice for Nonliterate or Emerging Literate Students

2012 ◽  
Vol 21 (3) ◽  
pp. 74-81 ◽  
Author(s):  
Debbie Witkowski ◽  
Bruce Baker
Keyword(s):  
Communication Skills ◽  
High Performance ◽  
Theory And Practice ◽  
Written Communication ◽  
Academic Tasks ◽  
Meaningful Participation ◽  
Core Theory ◽  
Communication Needs ◽  
Core Vocabulary ◽  
Personal Success

Abstract In the early elementary grades, the primary emphasis is on developing skills crucial to future academic and personal success—specifically oral and written communication skills. These skills are vital to student success as well as to meaningful participation in the classroom and interaction with peers. Children with complex communication needs (CCN) may require the use of high-performance speech generating devices (SGDs). The challenges for these students are further complicated by the task of learning language at a time when they are expected to apply their linguistic skills to academic tasks. However, by focusing on core vocabulary as a primary vehicle for instruction, educators can equip students who use SGDs to develop language skills and be competitive in the classroom. In this article, we will define core vocabulary and provide theoretical and practical insights into integrating it into the classroom routine for developing oral and written communication skills.

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