Multiporosity and Multiscale Flow Characteristics of a Stimulated Reservoir Volume (SRV)-Fractured Horizontal Well in a Tight Oil Reservoir

Long Ren, Wendong Wang, Yuliang Su, Mingqiang Chen, Cheng Jing, Nan Zhang, Yanlong He and Jian Sun
Additional contact information
Long Ren: School of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Wendong Wang: School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
Yuliang Su: School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
Mingqiang Chen: School of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Cheng Jing: School of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Nan Zhang: School of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Yanlong He: School of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Jian Sun: School of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China

Energies, 2018, vol. 11, issue 10, 1-14

Abstract: There are multiporosity media in tight oil reservoirs after stimulated reservoir volume (SRV) fracturing. Moreover, multiscale flowing states exist throughout the development process. The fluid flowing characteristic is different from that of conventional reservoirs. In terms of those attributes of tight oil reservoirs, considering the flowing feature of the dual-porosity property and the fracture network system based on the discrete-fracture model (DFM), a mathematical flow model of an SRV-fractured horizontal well with multiporosity and multipermeability media was established. The numerical solution was solved by the finite element method and verified by a comparison with the analytical solution and field data. The differences of flow regimes between triple-porosity, dual-permeability (TPDP) and triple-porosity, triple-permeability (TPTP) models were identified. Moreover, the productivity contribution degree of multimedium was analyzed. The results showed that for the multiporosity flowing states, the well bottomhole pressure drop became slower, the linear flow no longer arose, and the pressure wave arrived quickly at the closed reservoir boundary. The contribution ratio of the matrix system, natural fracture system, and network fracture system during SRV-fractured horizontal well production were 7.85%, 43.67%, and 48.48%, respectively in the first year, 14.60%, 49.23%, and 36.17%, respectively in the fifth year, and 20.49%, 46.79%, and 32.72%, respectively in the 10th year. This study provides a theoretical contribution to a better understanding of multiscale flow mechanisms in unconventional reservoirs.

Keywords: tight oil reservoir; SRV-fractured horizontal well; multiporosity and multiscale; flow regimes; productivity contribution degree of multimedium (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/10/2724/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/10/2724/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:10:p:2724-:d:175038

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().