Microseismic 101: Monitoring and Evaluating Hydraulic Fracturing to Improve the Efficiency of Oil and Gas Recovery from Unconventional Reservoirs
Bibliographic record
Abstract
Abstract Hydraulic fracturing will be main drive force in oil and gas production from tight hydrocarbon reservoirs in the future. We present a comprehensive literature review on applications, advancement, and limitations of geomechanics and microseismic monitoring of hydraulic fracturing treatments for exploitation of unconventional reservoirs. Microseismic method is the sate-of-the-art technology to monitor the hydraulic fracturing process. Visualization of microseismic events determines the spatial extent of hydraulic fracturing at first glance. Advance analysis of microseismic measurements provides more detailed information about the fracturing mode and fractures geometry. It can even be used for determination of the state of stress in the reservoir and for helping in reservoir characterization at a large scale. Microseismic imaging has successfully been used on stimulation design and control, reservoir characterization and simulation of unconventional reservoirs particularly in North America. Geomechanical, petrophysical, and geophysical mechanisms of hydraulic fracturing and associated seismicity which are not fully understood are topics of ongoing research. The goal of this study is to provide a comprehensive guideline and a study reference for geoscientists and engineers who would like to get familiar with the theoretical and practical aspects of microseismic monitoring. Starting with a brief history of exploitation of tight reservoirs and microseismic monitoring, the mechanism of hydraulic fracturing and microseismicity are described. Applications, processing, interpretation, and limitations of the methods are explained as wells as how microseismic technology has responded to some of the public concerns about environmental aspects and safety of the hydraulic fracturing process. In closing, four case studies are reviewed to provide some insights into the practical application and limitations of microseismic monitoring.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".