Comparison of the Vertical Gas-Hydrate Production Profile with the Simulation Results Obtained Using Geophysical Log-Based Reservoir Characteristics and Reasons for Their Discrepancies in the Nankai Trough

被引：9

作者：

Yamamoto, Koji ^{[1
]}

Kanno, Takayuki ^{[1
]}

Ouchi, Hisanao ^{[2
]}

Akamine, Koya ^{[2
]}

Kano, Satoshi ^{[2
]}

Naiki, Motoyoshi ^{[2
]}

Tamaki, Machiko ^{[2
]}

Ohtsuki, Satoshi ^{[1
]}

Tenma, Norio ^{[3
]}

机构：

[1] Japan Oil Gas & Met Natl Corp, JOGMEC, Chiba, Chiba 2610025, Japan

[2] Japan Oil Engn Co Ltd, Tokyo 1040054, Japan

[3] AIST, Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan

来源：

ENERGY & FUELS | 2021年 / 35卷 / 24期

关键词：

METHANE-HYDRATE; OFFSHORE PRODUCTION;

D O I：

10.1021/acs.energyfuels.1c02930

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this study, we analyzed the temperature and pressure measurement data obtained from the production test of methane hydrates in the second offshore production wells of Nankai Trough (2017). Based on the analysis, we derived time-series information on the vertical profile and the gas and water influxes in the wells via an optimization process. The time-series information revealed variations in the vertical production profiles and behavior between two production wells. Some discrepancies were observed in the petrophysical characteristics, particularly in the permeability between the wells, while comparing the measurement-based profile and simulation results based on geophysical log-based reservoir models. The discrepancies are attributed to the water-producing layers and some near-wellbore phenomena, which also inhibit stable and increasing gas production in the well. Current studies on gas hydrate by the Japanese national gas-hydrate resource development project focus on identifying the causes of these problems and possible countermeasures.

引用

页码：20026 / 20036

页数：11