天然气水合物降压开采储层稳定性模型分析

程家望; 苏  正; 吴能友

doi:10.3969/j.issn.2095-560X.2016.01.006

新能源进展 >

2016 , Vol. 4 >Issue 1: 33 - 41

DOI: https://doi.org/10.3969/j.issn.2095-560X.2016.01.006

论文

天然气水合物降压开采储层稳定性模型分析

程家望 ,
苏正 ,
吴能友

展开

1. 中国科学院广州能源研究所，广州 510640；
2. 中国科学院天然气水合物重点实验室，广州 510640；
3. 中国科学院大学，北京 100049

程家望（1990-），男，硕士研究生，主要从事天然气水合物开采储层稳定性的研究。

收稿日期: 2015-09-16

修回日期: 2015-12-24

网络出版日期: 2016-02-28

收起

A Geomechanical Stability Model Analysis of Hydrate Reservoir for Gas Hydrate Production by Depressurization

CHENG Jia-wang ,
SU Zheng ,
WU Neng-you

Expand

Received date: 2015-09-16

Revised date: 2015-12-24

Online published: 2016-02-28

Fold

摘要

储层稳定性是天然气水合物开采所面临的关键问题。本文基于多孔介质流体动力学和弹性力学，建立了天然气水合物降压开采储层稳定性数学模型，包括储层沉降和井壁稳定性分析两个方面，并以墨西哥湾某处水合物藏的基本参数为例，进行了水合物降压开采储层稳定性的模拟计算。结果表明，在水合物降压开采的过程中，孔隙流体压力降低导致了储层的沉降，最大的沉降发生在井壁附近，水合物分解会加剧储层的沉降；降低井孔压力会造成井壁破坏的潜在危险，在井壁附近，周向和垂向应力达到最大处容易发生失稳破坏，地层的水平应力差会增加井壁的不稳定性。

关键词： 天然气水合物; 降压开采; 储层沉降; 井壁稳定性

本文引用格式

程家望 , 苏正 , 吴能友 . 天然气水合物降压开采储层稳定性模型分析[J]. 新能源进展, 2016 , 4(1) : 33 -41 . DOI: 10.3969/j.issn.2095-560X.2016.01.006

Abstract

A model based on the dynamics of fluids in porous media and poroelasticity is developed for analyzing geomechanical stability of hydrate reservoir, which is a challenge for commercial gas production from hydrate reservoir. This model, including subsidence of hydrate reservoir and wellbore stability, is applied to Gulf of Mexico, where the basic parameters and the in situ stresses are publicly published. It is concluded that subsidence of hydrate reservoir occurs due to the changes in pore pressure and the maximum subsidence occurs near the wellbore; the more hydrates decompose, the larger subsidence occurs. Decreasing well pressure will induce potential wellbore failure and the borehole failure is expected to initiate at those positions where the tangential and vertical stresses reach the maximum value. The horizontal stress contrast increases the instability of wellbore.

Key words： natural gas hydrate; depressurization; subsidence; wellbore stability

参考文献

[1] MORIDIS G J, COLLETT T S, DALLIMORE S R, et al. Numerical studies of gas production from several CH4 hydrate zones at the Mallik site, Mackenzie Delta, Canada[J]. Journal of petroleum science and engineering, 2004, 43(3/4): 219-238. DOI: 10.1016/j.petrol.2004.02.015.

[2] NAZRIDOUST K, AHMADI G. Computational modeling of methane hydrate dissociation in a sandstone core[J]. Chemical engineering science, 2007, 62(22): 6155-6177. DOI: 10.1016/j.ces.2007.06.038.

[3] MAKOGON Y F. Natural gas hydrates-a promising source of energy[J]. Journal of natural gas science and engineering, 2010, 2(1): 49-59. DOI: 10.1016/j.jngse.2009.12.004.

[4] 沈海超, 程远方, 胡晓庆. 天然气水合物藏降压开采近井储层稳定性数值模拟[J]. 石油钻探技术, 2012, 40(2): 76-81. DOI: 10.3969/j.issn.1001-0890.2012.02.015.

[5] 宁伏龙, 蒋国盛, 张凌, 等. 影响含天然气水合物地层井壁稳定的关键因素分析[J]. 石油钻探技术, 2008, 36(3): 59-61. DOI: 10.3969/j.issn.1001-0890.2008.03.014.

[6] MORIDIS G J, COLLETT T S, POOLADI-DARVISH M, et al. Challenges, uncertainties, and issues facing gas production from gas-hydrate deposits[J]. SPE reservoir evaluation & engineering, 2011, 14(1): 76-112. DOI: 10.2118/131792-PA.

[7] 吴能友, 黄丽, 苏正, 等. 海洋天然气水合物开采潜力地质评价指标研究: 理论与方法[J]. 天然气工业, 2013, 33(7): 11-17. DOI: 10.3787/j.issn.1000-0976.2013.07.002.

[8] KIMOTO S, OKA F, FUSHITA T, et al. A chemo-thermo-mechanically coupled numerical simulation of the subsurface ground deformations due to methane hydrate dissociation[J]. Computers and geotechnics, 2007, 34(4): 216-228. DOI: 10.1016/j.compgeo.2007.02.006.

[9] KIM J, MORIDIS G J, RUTQVIST J. Coupled flow and geomechanical analysis for gas production in the Prudhoe Bay Unit L-106 well Unit C gas hydrate deposit in Alaska[J]. Journal of petroleum science and engineering, 2012, 92-93: 143-157. DOI: 10.1016/j.petrol.2012.04.012.

[10] FREIJ-AYOUB R, TAN C, CLENNELL B, et al. A wellbore stability model for hydrate bearing sediments[J]. Journal of petroleum science and engineering, 2007, 57(1/2): 209-220. DOI: 10.1016/j.petrol.2005.10.011.

[11] HONG H F. Modeling of gas production from hydrates in porous media[D]. Calgary: University of Calgary, 2003.

[12] Bear J. Dynamics of fluids in porous media[M]. New York: American Elsevier Pub. Co., 1972.

[13] ZIMMERMAN R W. Flow in porous media[M]. London: Department of Earth Science and Engineeringe, 2002.

[14] FREEZE R A, CHERRY J A. Groundwater[M]. New Jersey: Prentice-Hall, 1979.

[15] JI C, AHMADI G, SMITH D H. Natural gas production from hydrate decomposition by depressurization[J]. Chemical engineering science, 2001, 56(20): 5801-5814. DOI: 10.1016/S0009-2509(01)00265-2.

[16] BIOT M A. General theory of three-dimensional consolidation[J]. Journal of applied physics, 1941, 12(2): 155-164. DOI: 10.1063/1.1712886.

[17] 李培超, 李贤桂, 卢德唐. 饱和土体一维固结理论的修正——饱和多孔介质流固耦合渗流模型之应用[J]. 中国科学技术大学学报, 2010, 40(12): 1273-1278. DOI: 10.3969/j.issn.0253-2778.2010.12.011.

[18] AADNOY B S. Stability of highly inclined boreholes (includes associated papers 18596 and 18736)[J]. SPE drilling engineering, 1987, 2(4): 364-374. DOI: 10.2118/16052-PA.

[19] FJAR E, HOLT R M, Horsrud P, et al. Petroleum related rock mechanics, volume 53[M]. 2nd ed. Amsterdam: Elsevier, 2008.

[20] RUTQVIST J, MORIDIS G J, GROVER T, et al. Coupled multiphase fluid flow and wellbore stability analysis associated with gas production from oceanic hydrate-bearing sediments[J]. Journal of petroleum science and engineering, 2012, 92-93: 65-81. DOI: 10.1016/j.petrol.2012.06.004.

[21] AL-AJMI A M, ZIMMERMAN R W. Stability analysis of vertical boreholes using the Mogi-Coulomb failure criterion[J]. International journal of rock mechanics and mining sciences, 2006, 43(8): 1200-1211. DOI: 10.1016/j.ijrmms.2006.04.001.

[22] ZHANG L Y, CAO P, RADHA K C. Evaluation of rock strength criteria for wellbore stability analysis[J]. International journal of rock mechanics and mining sciences, 2010, 47(8): 1304-1316. DOI: 10.1016/j.ijrmms.2010.09.001.

[23] BIRCHWOOD R, NOETH S. Horizontal stress contrast in the shallow marine sediments of the Gulf of Mexico sites Walker Ridge 313 and Atwater Valley 13 and 14-Geological observations, effects on wellbore stability, and implications for drilling[J]. Marine and petroleum geology, 2012, 34(1): 186-208. DOI: 10.1016/j.marpetgeo.2012.01.008.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献