THERMAL SCIENCE

International Scientific Journal

Jing-Yang Chen

,

Liang-Bin Dou

,

Zhong-Chen Xi

,

Hai-Bo Li

,

Ting Wang

,

Xue-Bin Cheng

A NEW METHOD FOR EVALUATING FRACABILITY OF SHALE RESERVOIRS

ABSTRACT
In this paper, the reservoir brittleness index is determined by mineral composition and content ratio of shale reservoir, and the cementation degree of rock in different reservoirs is predicted based on spontaneous potential and natural gamma log­ging, and combined with the fracture toughness characteristics of rock mechanics, a new evaluation and prediction method for fracturing ability of shale reservoir is established, which integrates rock mineral composition, cementation degree and fracture toughness of rock. This model can be used to obtain quantitative charac­terization of fracturing ability in laboratory and field through laboratory test or field logging data. The fracability model established in this paper has been applied and analyzed in typical shale Wells and the evaluation results are consistent with the productivity monitoring data after fracturing, which verifies the accuracy of the model established in this paper.
KEYWORDS
shale reservoir, brittle minerals, cementation degree, fracture toughness, fracability
PAPER SUBMITTED: 2024-02-05
PAPER REVISED: 2024-03-20
PAPER ACCEPTED: 2024-05-06
PUBLISHED ONLINE: 2024-09-28
DOI REFERENCE: https://doi.org/10.2298/TSCI2404423C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 4, PAGES [3423 - 3428]
REFERENCES
  1. Dou, L. B., Comparison of Mechanical Characteristics of Different Types of Shales in the Ordos Basin, Frontiers in Earth Science, 2023 (2023), 7, ID11
  2. Dou, L. B., A New Method of Quantitatively Evaluating Fracability of Tight Sandstone Reservoirs Using Geomechanics Characteristics and in Situ Stress Field, Processes, 10 (2022), 5, 1040
  3. Dou, L. B., The Study of Enhanced Displacement Efficiency in Tight Sandstone from the Combination of Spontaneous and Dynamic Imbibition, Journal of Petroleum Science and Engineering, 38 (2021), 1, 108327
  4. Sun, J. M., Log Evaluation Method of Fracturing Performance in Tight Gas Reservoir, ACTA Petrolei Sinica, 36 (2015),1, pp. 74-80
  5. Zou, C. N., Progress in China's Unconventional Oil & Gas Exploration and Development and Theoretical Technologies, ACTA Geologica Sinica, 89 (2015), 6, pp. 979-1007
  6. Zhang, K. S., Study on Evaluation Method of Tensile Strength of Tight Sandstone Reservoir, Progress in Geophysics, 36 (2021), 1, ID22991
  7. Li, Q. H., Indoor Evaluation Method for Shale Brittleness and Improvement, Chinese Journal of Rock Mechanics and Engineering, 31 (2012), 8, pp. 1680-1685
  8. Jin, X. C., An Integrated Petrophysics and Geomechanics Approach for Fracability Evaluation in Shale Reservoirs, SPE Journal, 20 (2015), 3, pp. 518-526
  9. Rickman, R., A Practical Use of Shale Petrophysics for Stimulation Design Optimization: All Shale Plays are Not Clones of the Barnett Shale, SPE, 2008 (2008), 1, ID115258
  10. Chong, K. K., A Completions Guide Book to Shale-Play Development: A Review of Successful Approaches toward Shale-Play Stimulation in the Last Two Decades, SPE, 2010 (2010), ID133874
  11. Tang, Y., Influence Factors and Evaluation Methods of the Gas Shale Fracability, Earth Science Frontiers, 19 (2012), 5, pp.356-363
  12. Yuan, J. L., Fracability Evaluation of Shale-Gas Reservoirs, ACTA Petrolei Sinica, 34 (2013), 3, pp. 523-527
  13. Wu, Q., The Core Theories and Key Optimization Designs of Volume Simulation Technology for Unconventional Reservoirs, ACTA Petrolei Sinica, 35 (2014), 4, pp. 706-714
  14. Wang, X. X., Quantitative Characterization of Diagenesis of Clastic Reservoirs based on Logging Interpretation: Taking the Lower Member of Xiaganchaigou Formation in Q Oilfield as an Example, Geological Science and Technology Information, 37 (2018), 1, pp. 240-246
PDF VERSION [DOWNLOAD]
A new method for evaluating fracability of shale reservoirs

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence