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     Research Journal of Applied Sciences, Engineering and Technology


Experimental Study on Determination of Perforation Damage Parameter of Berea Core

1Ren Xidong, 1Wei Jianguang, 2Yang Lifeng and 1Zhang Guocheng
1School of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
2Research Institute of Petroleum Exploration and Development, Langfang Branch Institute, Langfang 065000, China, National Natural Science Foundation Project (Project Number 51474070) Improve Oil Recovery Key Laboratory Project
Research Journal of Applied Sciences, Engineering and Technology  2016  5:341-344
http://dx.doi.org/10.19026/rjaset.13.2951  |  © The Author(s) 2016
Received: October ‎9, ‎2015  |  Accepted: March ‎5, ‎2016  |  Published: September 05, 2016

Abstract

In order the foundation and project number reservoir conditions, an indoor simulation experiment was carried out using the micro-permeameter and Berea cores with different permeability. The thickness and permeability of crushed zone around the perforation tunnels were given under the conditions of different perforating charges (conventional charge YD89-1, large aperture charge YD127-4, deep penetration charge BH54RDX-1) and different permeability (1.0 mD, 10.0 mD, 100.0 mD and 1000.0 mD). The research results show that: micro-cracks will appear in low permeability (less than or equal to 1.0 mD) Berea core, leading to the increase of permeability in crushed zone, which means that under the condition of low permeability, perforation will improve the situation around the holes instead of decreasing the permeability. While the permeability of crushed zone decreases obviously when the core permeability is higher (10.0 to 100.0 mD). Whether the core permeability is low or high, the thickness of crushed zone will increase with the increasing of perforating diameter. The compacted thickness of three types of charges are 10 to 12, 10 to 14, 12 to 16 and 14 to 18 mm corresponding to the permeability of 1.0, 10.0, 100.0 and 1000.0 mD, respectively. The results of this study have an important guiding significance for the optimization of perforating charges and the calculation of skin factors of well completion.

Keywords:

Core, determination of compaction parameter, perforation experiment, perforation damage parameter,


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Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.

ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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