Rate transient analysis for multilateral horizontal well in natural gas hydrate:superposition principle and reciprocity

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Due to high energy density,clean combustion products and abundant resources,natural gas hydrates(NGHs)have been regarded as an important clean energy source with the potential for large-scale development and utilization.However,pilot tests in NGHs show that their production rates are far below commercial needs.Multilateral well technology may lead to a solution to this problem because it can dramatically expand the drainage area of production wells.This paper presents the practical rate transient analysis for multilateral horizontal wells in NGHs.In developing solution to the diffusivity equation of multilateral horizontal wells in NGHs,the superposition principle and reciprocity are applied.We wrote the governing equation in cylindrical coordinates to describe the NGH flow process.We used the moving boundaries and dissociation coefficients to model the solid-to-gas transition process in hydrates.To obtain solutions for flow in hydrate reservoirs,we used Laplace transforms and the Stehfest numerical inversion method.Superposition principle and Gaussian elimination are applied to obtain the desired solution for multilateral horizontal wells.We validated our proposed model with a com-mercial numerical simulator.By performing sensitivity analyses,effects on production behavior of the number of branches,dissociation coefficient,radius of the region with dissociated hydrate,and dispersion ratio are determined.A synthetic case study is conducted to show the typical production behaviors.

外文关键词：

Natural gas hydrateMultilateral horizontal wellsProduction solutionSuperposition principle

作者：

Tianbi Ma、Hongyang Chu、Jiawei Li、Jingxuan Zhang、Yubao Gao、Weiyao Zhu、W.John Lee

展开 >

作者单位：

Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 100083,China

Department of Geosciences,The University of Tulsa,Tulsa,OK 74104,USA

School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China

Harold Vance Department of Petroleum Engineering,Texas A&M University,College Station,TX 77843,USA

Houston Formation Evaluation Center,Schlumberger,Sugar Land,TX 77478,USA

展开 >

出版年：

2024

DOI：

10.1007/s40789-024-00720-x

国际煤炭科学技术学报(英文)

CSTPCD

ISSN：2095-8293

年,卷(期)：2024.11(5)