Numerical simulations for short-term depressurization production test of two gas hydrate sections in the Black Sea

MEREY Ş., SINAYUÇ Ç.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING, vol.44, pp.77-95, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44
  • Publication Date: 2017
  • Doi Number: 10.1016/j.jngse.2017.04.011
  • Journal Name: JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.77-95
  • Keywords: Gas hydrate, Black sea, Danube fan, Depressurization, HydrateResSim, Simulation, METHANE HYDRATE, PERMEABILITY, SEDIMENTS, RESERVOIR, MODELS
  • Middle East Technical University Affiliated: Yes

Abstract

Gas hydrates are considered as a promising energy source and the Black Sea has a high potential of gas hydrates. The Danube Delta of the Black Sea is the most well-known prospect in the Black Sea after many geological and geophysical studies such as bottom-simulation reflectors (BSR) and electromagnetic surveys. In this study, gas production simulations from two gas hydrate layers (6 m thick hydrate layer at 60 mbsf and 30 m-thick hydrate layer at 140 mbsf above BSR at 350 mbsf) at the same locations with approximately 50% hydrate saturation in the Danube Fan of the Black Sea were run with depressurization method separately at 2 MPa, 3 MPa, 4 MPa, 5 MPa, and 6 MPa by using HydrateResSim numerical simulators. Moreover, different production tests strategies were suggested in this region. (C) 2017 Elsevier B.V. All rights reserved.