Abstract
The distribution of cracks around a perforation, as the initial condition for hydraulic fracturing, has a non-negligible influence on the fracturing process. This work presents a perforating experiment to investigate the crack distribution around the perforation tunnel. The distribution of the number of cracks on samples was statistically analyzed. Then, a 2D cross-section was selected as the research target for numerical simulation. And a numerical model was introduced to describe the rock cracking in the cross-section during perforation based on FEPG (Finite Element Program Generator) software. The meso-mechanical parameters were set to be randomly distributed to ensure a random distribution of cracks. The tensile failure criterion, Mohr-Coulomb criterion, and the fracture toughness criterion were used as the failure criterion. The modulus reduction method was applied to show element cracking. The simulation results show that the damage zone can be divided into four parts after perforation. According to the main causes of cracked elements, the four zones were named as the central crushed zone, the compression-shear damage zone, the tensile damage concentration zone, and the tensile damage propagation zone. The variations of the distribution of cracks under different perforating charge sizes and confining pressures have been analyzed. The reliability of the numerical model was verified by comparing the results of the numerical simulation to the physical experiments.
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References
Anderson T L (2011) Fracture mechanics: fundamentals and applications. Boca Raton: CRC press.
API (2006) Recommended practices for evaluation of well perforators, Recommended Practice RP 19B, second edition.
API (2019) Cements and materials for well cementing, API Specification 10A, twenty fifth edition
Bai Q, Konietzky H, Zhang C, Xia B (2021) Directional hydraulic fracturing (DHF) using oriented perforations: the role of micro-crack heterogeneity. Comput Geotech 140:104471. https://doi.org/10.1016/j.compgeo.2021.104471
Chatterji S (1982) Probable mechanisms of crack formation at early ages of concretes: a literature survey. Cem Concr Res 12(3):371–376. https://doi.org/10.1016/0008-8846(82)90085-0
Craddock GG, Rios F (2020) Perforating crushed zone fracture mechanism. SPE International Conference and Exhibition on Formation Damage Control. https://doi.org/10.2118/199303-ms
Davarpanah A, Shirmohammadi R, Mirshekari B, Aslani A (2019) Analysis of hydraulic fracturing techniques: hybrid fuzzy approaches. Arab J Geosci 12:402. https://doi.org/10.1007/s12517-019-4567-x
Dawson EM, Roth WH, Drescher A (1999) Slope stability analysis by strength reduction. Geotechnique 49(6):835–840. https://doi.org/10.1680/geot.1999.49.6.835
Goodman RE (1989) Introduction to rock mechanics. Wiley, New York
Heiland J C, Grove B M, Harvey J P, Walton I C, Martin A J (2009) New fundamental insights into perforation-induced formation damage. 8th European Formation Damage Conference. Society of Petroleum Engineers. https://doi.org/10.2118/122845-MS
IEA (2021) IEA-World energy outlook 2021[R]. IEA, Paris
Jia C, Zheng M, Zhang Y (2012) Unconventional hydrocarbon resources in China and the prospect of exploration and development. Pet Explor Dev 39(2):139–146. https://doi.org/10.1016/s1876-3804(12)60026-3
Liang G, Tian J (2011) Finite element analysis software platform FEPG. Comput Aided Eng 20(3):92–96. https://doi.org/10.3969/j.issn.1006-0871.2011.03.019
Lin Y, Liu Y, Wei X, Ding Y (2017) Experimental study on failure laws of rock around perforating tunnel caused by perforation. Res Explor Lab 36(12):47–51. https://doi.org/10.3969/j.issn.1006-7167.2017.12.013
Lin Y, Yao J, Liu Y, Qiao J, Ding Y (2019) Preliminary numerical simulation of rock perforation cracking. Explosion and Shock Waves 39(07):156–165. https://doi.org/10.11883/bzycj-2018-0122
Nabipour A, Sarmadivaleh M, Asadi M S, Sabogal J, Rasouli V (2010) A DEM study on perforation induced damaged zones and penetration length in sandstone reservoirs. 44th US Rock Mechanics Symposium and 5th US-Canada Rock Mechanics Symposium. American Rock Mechanics Association
Pucknell J K, Behrmann L A (1991) An investigation of the damaged zone created by perforating. SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, https://doi.org/10.2523/22811-MS
Rinne H (2008) The Weibull distribution: a handbook. CRC press
Rossmanith HP, Daehnke A, Knasmillner RE, Kouzniak N, Ohtsu M, Uenishi K (1997) Fracture mechanics applications to drilling and blasting. Fatigue Fract Eng Mater Struct 20(11):1617–1636. https://doi.org/10.1111/j.1460-2695.1997.tb01515.x
Sadd MH (2009) Elasticity: theory, applications, and numerics. Academic Press
Saucier RJ, Lands Jr JF (1978) A laboratory study of perforations in stressed formation rocks. Journal of Petroleum Technology, 30(09): 1,347-1,353. https://doi.org/10.2118/6758-PA.
Tang J, Ehlig-Economides C, Fan B, Cai B, Mao W (2019) A microseismic-based fracture properties characterization and visualization model for the selection of infill wells in shale reservoirs. J Natural Gas Sci Eng 67:147–159. https://doi.org/10.1016/j.jngse.2019.04.014
Tang J, Wu K, Zeng B, Huang H, Hu X, Guo X, Zuo L (2018) Investigate effects of weak bedding interfaces on fracture geometry in unconventional reservoirs. J Pet Sci Eng 165:992–1009. https://doi.org/10.1016/j.petrol.2017.11.037
Wu K, Olson J E (2016) Mechanisms of simultaneous hydraulic-fracture propagation from multiple perforation clusters in horizontal wells. SPE Journal, 21(03): 1,000-1,008. https://doi.org/10.2118/178925-PA.
Wu K, Sangnimnuan A, Tang J (2016) Numerical study of flow rate distribution for simultaneous multiple fracture propagation in horizontal wells. The 50th US Rock Mechanics/ Geomechanics Symposium, Houston, Texas. ARMA
Xiang X, Zhao S, Zhou F (2000) Study on perforation mechanism of metal perforating metal jet and selection of metal powder. Well Logging Technol 24(6):448–449. https://doi.org/10.3969/j.issn.1004-1338.2000.06.012
Xue S, Pang M, Zhu X, Zhang L, Zhu S (2015) Study of porosity and permeability damage of perforation compaction zone in sandstone reservoir. Rock and Soil Mechanics, 2015, 36(6):1529-1536. https://doi.org/10.16285/j.rsm.2015.06.002.
Yan Y, Guan Z, Yan W, Wang H (2020a) Mechanical response and damage mechanism of cement sheath during perforation in oil and gas well. J Pet Sci Eng 188:106924. https://doi.org/10.1016/j.petrol.2020.106924
Yan Y, Guan Z, Xu Y, Zhang X, Yan W (2020b). Numerical modelling of radial crack propagation in cement sheath during hydraulic fracturing//SPE Europec. OnePetro
Zhang F, Damjanac B, Maxwell S (2019) Investigating hydraulic fracturing complexity in naturally fractured rock masses using fully coupled multiscale numerical modeling. Rock Mech Rock Eng 52(12):5137–5160. https://doi.org/10.1007/s00603-019-01851-3
Zhang Z, Guo J, Liang H, Liu Y (2021) Numerical simulation of skin factors for perforated wells with crushed zone and drilling-fluid damage in tight gas reservoirs. J Natural Gas Sci Eng 90:103907. https://doi.org/10.1016/j.jngse.2021.103907
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Yao, J., Lin, Y., Qiao, J. et al. Numerical simulation of rock cracking around a perforation. Arab J Geosci 15, 1397 (2022). https://doi.org/10.1007/s12517-022-10662-w
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DOI: https://doi.org/10.1007/s12517-022-10662-w