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Participation of Gas Hydrate to Form Oil-Gas Deposit in the...
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Participation of Gas Hydrate to Form Oil-Gas Deposit in the Seas

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Geological Oceanography".

Deadline for manuscript submissions: closed (31 May 2019) | Viewed by 3746

Special Issue Editor

Prof. Dr. Anatoly Obzhirov

E-Mail Website
Guest Editor
V.I. Il'ichev Pacific Oceanological Institute, Vladivostok, Russia
Interests: ocean and sea; methane flux; gas hydrate; oil–gas deposit; geological structure; seismic activity; relationship between gas hydrate and oil-gas deposit

Special Issue Information

Dear Colleagues,

It is very important to understand what kind geological conditions influence to form gas hydrate and oil–gas deposits in the Oceans and Seas. For example, geological–geophysical complex investigations in the Okhotsk Sea allow us to find special geological structures with methane fluxes, gas hydrate and oil-gas deposits. Gas hydrate in surface sediment in the Okhotsk Sea was found in 17 areas. The source of methane is the deep layers that contain layers of oil–gas deposits. The regularity of relationships between methane fluxes, gas hydrate and oil-gas deposit are very important. Complex investigations via international cooperation have allowed us to discover methane fluxes, gas hydrate and to find a great deal of regularity to form and to destroy gas hydrate in the Okhotsk Sea. One is the possibility that gas hydrate participates to form oil–gas deposits. Gas hydrate conserves hydrocarbons under high pressure and low temperature conditions and gas hydrate is good cap that close free oil-gas from degassing to assist accumulation of oil-gas deposit. So, methane fluxes, gas hydrate and oil–gas deposits are relationship between each other, and may be used as an indicator to search for oil–gas deposits.

Prof. Dr. Anatoly Obzhirov
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ocean and seas
  • methane flux
  • gas hydrate
  • oil-gas deposit
  • geological structure

Published Papers (1 paper)

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Research

21 pages, 5889 KiB  
Article
Experiment and Analysis of Submarine Landslide Model Caused by Elevated Pore Pressure
by Tao Liu, Yueyue Lu, Lei Zhou, Xiuqing Yang and Lei Guo
J. Mar. Sci. Eng. 2019, 7(5), 146; https://doi.org/10.3390/jmse7050146 - 15 May 2019
Cited by 12 | Viewed by 3388
Abstract
Hydrate decomposition is an important potential cause of marine geological disasters. It is of great significance to understand the dynamic relationship between hydrate reservoir system and the overlying seabed damage caused by its decomposition. The purpose of this study is to understand the [...] Read more.
Hydrate decomposition is an important potential cause of marine geological disasters. It is of great significance to understand the dynamic relationship between hydrate reservoir system and the overlying seabed damage caused by its decomposition. The purpose of this study is to understand the instability and destruction mechanisms of a hydrated seabed using physical simulations and to discuss the effects of different geological conditions on seabed stability. By applying pressurized gas to the low permeability silt layer, the excess pore pressure caused by the decomposition of hydrate is simulated and the physical appearance process of the overlying seabed damage is monitored. According to the test results, two conclusions were drawn in this study: (1) Under the action of excess pore pressure caused by hydrate decomposition, typical phenomena of overlying seabed damage include pockmark deformation and shear–slip failure. In shallower or steeper strata, shear-slip failure occurs in the slope. The existence of initial crack in the stratum is the main trigger cause. In thicker formations or gentler slopes, the surface of the seabed has a collapse deformation feature. The occurrence of cracks in the deep soil layer is the main failure mechanism. (2) It was determined that the thickness and slope of the seabed, among other factors, affect the type and extent of seabed damage. Full article
(This article belongs to the Special Issue Participation of Gas Hydrate to Form Oil-Gas Deposit in the Seas)
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