Characterization of the jet perforation crushed zone by SEM and image analysis

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · SPE Formation Evaluation (Society of Petroleum Engineers); (United States)

DOI:https://doi.org/10.2118/22812-PA· OSTI ID:6993822

Asadi, M; Preston, P W ^[1]

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1. Univ. of Kansas, Lawrence, KS (United States)

This paper presents a method to measure porosity and permeability alteration of the crushed zone with scanning electron microscopy (SEM) and image analysis. A new phenomenon, shock metamorphism, was used to evaluate shock-wave penetration. Berea sandstone samples were prepared with a modification of the API recommended practice for test-sample preparation. Samples were perforated with low- and medium-penetration shaped charges. Analysis of the low-charge shot sample indicated an average porosity reduction of 25% and an average permeability reduction of 55% in the crushed zone. The sample shot with the medium-penetration shaped charge shoved planar-element shock metamorphism.

• OSTI ID: 6993822
• Journal Information: SPE Formation Evaluation (Society of Petroleum Engineers); (United States), Vol. 9:2; ISSN 0885-923X
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
FORMATION DAMAGE
PERFORATION
OIL WELLS
RESERVOIR ENGINEERING
WELL CASINGS
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