The effect of pressure depression on the water inflow volume to wells which cover carbonate rocks in the Carpathian Foredeep basement, SE Poland

Authors

  • Mirosław Rzyczniak AGH University of Science and Technology, Faculty of Drilling, Oil & Gas
  • Marek L. Solecki AGH University of Science and Technology, Faculty of Drilling, Oil & Gas https://orcid.org/0000-0001-8637-8300
  • Dagmara Zeljaś AGH University of Science and Technology, Faculty of Drilling, Oil & Gas https://orcid.org/0000-0001-7241-0285
  • Stanisław J. Dubiel AGH University of Science and Technology, Faculty of Drilling, Oil & Gas

DOI:

https://doi.org/10.17794/rgn.2021.2.4

Keywords:

Carpathian Foredeep, Mesozoic, DST test, statistics, water flow volume

Abstract

This paper presents an analysis of well testing data, performed with a Drill stem test (DST). The carbonate levels of Mesozoic reservoir rocks were investigated in the research area of the Carpathian Foredeep. Based on the results of 17 two-cycle DST reservoir tests, the dependence of the volume of the reservoir water flow rate from the Mesozoic carbonate
reservoirs (Upper Jurassic, Lower Cretaceous) to the wells as a function of the mean depression of bottom pressure was researched in the selected oil exploration area in the Carpathian Foredeep basement, SE Poland. Using methods of statistical analysis, a satisfactory correlation between variables for power and the exponential model was found, and a weak correlation for the linear model was found. A decrease in the value of the reservoir water flow rate along with an increase in pressure depression was found for the Mesozoic carbonate reservoirs, which may indicate the occurrence of fractures and micro-fractures shortening under extreme pressure depression and blockage phenomena of fractures and cavernous pores in the perimeter area by solid particles (cuttings, salt, polymers, etc.).

Downloads

Published

2021-03-18

How to Cite

Rzyczniak, M., Solecki, M., Zeljaś, D., & Dubiel, S. (2021). The effect of pressure depression on the water inflow volume to wells which cover carbonate rocks in the Carpathian Foredeep basement, SE Poland. Rudarsko-geološko-Naftni Zbornik, 36(2), 33–42. https://doi.org/10.17794/rgn.2021.2.4

Issue

Vol. 36 No. 2 (2021): No. 53

Section

Petroleum Engineering and Energetics

License

Copyright (c) 2021 authors and journal

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons-BY

Authors who publish with this journal agree to the following terms:

In agreeing this form, you certify that:

  1. You read the ethical codex of the RGN zbornik available at journal web.
  2. You submitted work is your original work, and has not previously been published and does not include any form of plagiarism.
  3. You own copyright in the submitted work, and are therefore permitted to assign the licence to publish to RGN zbornik.
  4. Your submitted work contains no violation of any existing copyright or other third party right or any material of an obscene, libellous or otherwise unlawful nature.
  5. You have obtained permission for and acknowledged the source of any illustrations, diagrams or other material included in the work of which you are not the copyright owner.
  6. You have taken due care to ensure the accuracy of the work, and that, to the best of your knowledge, there are no false statements made within it.
  7. All co-authors of this submitted work are aware of, and in agreement with, the terms of this licence and that the submitted manuscript has been approved by these authors.

 

Publication licence

You retain copyright in your submitted work, according to journal license policy (CC-BY). By signing this form you agree that RGN zbornik may publish it under the publication licence. In summary the licence allows the following:

Anyone is free:

  • To copy, distribute, display, and perform the work.
  • To make derivative works.

 

Under the following conditions:

  • The original author must always be given credit.
  • The work may not be used for commercial purposes.
  • If the work is altered, transformed, or built upon, the resulting work may only be distributed under a licence identical to this one.

 

Exceptions to the licence

In addition to publishing the work printed under the above licence, RGN zbornik will also enable the work to be visible online.

The journal editorial can change the licence rules anytime but it cannot retroactively restrict author(s) rights.