Analyzing fuid fow characteristics in a dual porosity reservoir with an elastic outer boundary

Kim, Song Chol; Han, Chol Gwang; Rim, Myong Won; Kim, Ju Song; Ryang, Myong Jun

doi:10.1007/s11600-021-00621-6

Artykuł - szczegóły

Tytuł artykułu

Analyzing fuid fow characteristics in a dual porosity reservoir with an elastic outer boundary

Autorzy

Kim Song Chol , Han Chol Gwang , Rim Myong Won , Kim Ju Song , Ryang Myong Jun

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-021-00621-6

Warianty tytułu

Języki publikacji

Abstrakty

When we develop petroleum and natural gas reservoirs, we can see a lot of dual-porosity reservoirs with both pores and fractures. Many researchers have studied characteristics of fluid flow in dual-porosity reservoirs with the ideal outer boundary (infinite boundary, closed boundary or constant pressure boundary) but nobody has considered dual-porosity model with the elastic outer boundary (EOB) reflecting the real condition. So there could be large errors in analyzing well-test data for dual-porosity model. In this paper, we establish a percolation model for dual-porosity reservoirs with the EOB and consider the skin factor and wellbore storage. And we obtain its solution in Laplace space by introducing the effective well radius and applying the Laplace transformation. An approximation in Laplace space is also derived by using an asymptotic formula of I0(x) and I1(x). By using Stehfest numerical inversion of Laplace transformation, the solution in the real space is obtained. We compare this model to homogeneous model with the EOB and conventional dual-porosity model, respectively. Comparison results show that the conventional outer boundary conditions are three special cases of the EOB and homogeneous model with the EOB is a special case of dual-porosity model with the EOB. Flow characteristics are analyzed and it is shown that the EOB affects analysis of well-test data through simulation. This study may improve the accuracy of well-test analysis for dual-porosity reservoir.

Słowa kluczowe

dual porosity Laplace transformation flow characteristic elastic outer boundary type curves

podwójna porowatość transformacja Laplace'a charakterystyka przepływu

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2021

Tom

Vol. 69, no. 5

Strony

1843--1853

Opis fizyczny

Bibliogr. 32 poz.

Twórcy

autor

Kim Song Chol

ksc71821@star-co.net.kp

Faculty of Mining Engineering, Kim Chaek University of Technology, Pyongyang, Democratic People’s Republic of Korea

https://orcid.org/0000-0003-2362-242X

autor

Han Chol Gwang

Faculty of Mining Engineering, Kim Chaek University of Technology, Pyongyang, Democratic People’s Republic of Korea

autor

Rim Myong Won

Faculty of Mining Engineering, Kim Chaek University of Technology, Pyongyang, Democratic People’s Republic of Korea

autor

Kim Ju Song

Faculty of Mining Engineering, Kim Chaek University of Technology, Pyongyang, Democratic People’s Republic of Korea

autor

Ryang Myong Jun

Faculty of Mining Engineering, Kim Chaek University of Technology, Pyongyang, Democratic People’s Republic of Korea

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-3f152cc1-f96e-4eec-af2d-659c5190fa58