Physical and numerical assessments of the penetration behavior of coplanar linear shape charges

Fu, Yanshu; Jiang, Man Hua; Zhao, Penglong; Yao, Xiaojun; Xie, Xingbo; Gao, Fuyin

doi:10.1007/s10999-021-09535-z

Cited by 2 publications

(4 citation statements)

References 16 publications

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“…In this paper, based on the mechanical response characteristics of sandstone under perforation impact load, the modified evolution equation of sandstone porosity and permeability was employed, which was proposed in Refs. [30,31]. Therefore, a mathematical model of the compaction damage of perforation with low-porosity and permeability was established.…”

Section: Mathematical Model For the Perforation Compaction Damagementioning

confidence: 99%

“…Combined with the values of the parameters in the mathematical model of perforation compaction damage in Refs. [30,31], the initial values of the parameters in this work are shown in Table 2.…”

Section: Materials Parameters Of the Sandstone Targetmentioning

confidence: 99%

“…A cylindrical target penetration test was used to verify the interface damage area caused by perforation. Fu et al [30] studied the penetration behavior of convergent, divergent, and straight linear-shaped charges (LSCs) by numerical and physical methods.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Liang,

Zhao,

Jin

2024

Processes

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Shaped charge perforation is an important technology for sandstone gas reservoirs. In the process of shaped charge perforating, the initial permeability and porosity of the formation are greatly reduced, directly affecting oil and gas production. This paper uses smooth particle hydrodynamics (SPH) and finite element methods (FEMs) to study the formation damage caused by the shaped charge perforation. In this perforation simulation, the impact characteristics of the metal jet formed by the liner are coupled with the damage characteristics of the sandstone. A new mathematical model is proposed to describe the damage of permeability and porosity based on the Morris and Xue models. The simulated results show that a large-scale abdominal section appears at the perforation site, and the axis of the hole tilts with the increase in the perforation depth. The porosity damage at the perforation site is the greatest, up to 60%, while the permeability recovers to 90% of its initial state after pressure relief. The degree of porosity damage decreases with the increase in negative pressure, and when the negative pressure is 30 MPa, it may cause a large amount of sand production.

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Section: Mathematical Model For the Perforation Compaction Damagementioning

confidence: 99%

Section: Materials Parameters Of the Sandstone Targetmentioning

confidence: 99%

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Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Liang,

Zhao,

Jin

2024

Processes

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“…According to the frictional movement model, the resistant pressure that arises from the shaped charge jet penetration in the sample is the shearing yield stress σ s . e expression of the kinematics of the convergent jet is [27,28]…”

Section: Physical Model Of Mini-lsc Jet Penetrationmentioning

confidence: 99%

Rock Dynamic Fracture Characteristics by Mini‐Linear Shaped Charge Jet Penetration: A Case Study

Zhenyang

Liu

et al. 2022

Advances in Civil Engineering

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An insignificant number of studies have focused on employing penetration using mini-linear shaped charge jets for directionally controlled splitting of massive rocks. In this study, we adopt a numerical calculation method to simulate the penetration and formation of the main splitting surface of a concrete specimen, considering a wedge angle of 45° in both processes. The surface on the principal axial plane is found to split first due to linear jet penetration. In the case of single primary-plane splitting, cracks appear at both ends of the long axis of the penetration crack and the splitting surface extends diagonally from the center of the penetration. A transverse crack separates the splitting surface and the radial-fracture surface, and the degree of fracture decreases along the direction of the height of the specimen. Finally, a realistic physical model demonstrating penetration using a mini-linearshaped charge jet is established. It is a rapid and safe blasting technology to handle hazardous massive rocks during emergency rescuing or mining.

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Physical and numerical assessments of the penetration behavior of coplanar linear shape charges

Cited by 2 publications

References 16 publications

Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Rock Dynamic Fracture Characteristics by Mini‐Linear Shaped Charge Jet Penetration: A Case Study

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