Estimation of Liquid Loading Location in Offshore Gas Production System

Seung-Young  Back; Pan-Sang  Kang; Jong-Se  Lim

doi:10.12972/ksmer.2017.54.6.646

All Issue

2017 Vol.54, Issue 6 Preview Page Next Page

Research Paper

Estimation of Liquid Loading Location in Offshore Gas Production System 해양 가스 생산시스템의 Liquid Loading 발생 위치 추정 연구

31 December 2017. pp. 646-654

PDF XML

Abstract

Liquid loading problem is one of main reasons of shut-down in mature offshore gas production system. In this research, liquid loading location was estimated using three methods (nodal analysis, critical gas rate and transient multiphase flow analysis) and liquid loading effect on shut-down condition was investigated. As a result of critical gas rate analysis, estimated result using Coleman model was the closest to measured data among 4 model in this paper. Using this result, the location where liquid loading occurred was identified. As a result of transient multiphase flow analysis, location and thickness of liquid column induced by liquid loading was estimated. The findings in this paper might be able to diagnose and remediate liquid loading in target offshore gas production system.

Keywords

해양 가스 생산시스템

Liquid loading

노달 분석

임계 가스생산량

생산 관내 유동 분석

생산 감쇄기인 해양 가스 생산시스템에서 liquid loading 발생은 생산 중단의 주요 원인 중 하나이다. 이 연구 에서는 노달 분석, 임계 가스생산량 분석, 생산 관내 유동 분석 기법을 적용하여 현장의 liquid loading 발생 위치를 추 정하고 liquid loading이 생산 중단 조건에 미치는 영향을 분석하고자 하였다. 임계 가스생산량에 사용된 4개의 경험식 중 Coleman 경험식을 이용한 결과가 계측값과 가장 근접하였고 이 결과를 이용하여 대상 해양 가스 생산시스템에서 liquid loading이 발생한 위치를 파악하였다. 생산 관내 유동 분석 결과 liquid loading 발생 후 집적된 액체 집적 위치와 두께를 파악하였다. 이 연구 결과는 대상 해양 가스 생산시스템의 liquid loading을 진단하고 해결하는데 활용이 가능 할 것으로 사료된다.

키워드

Offshore gas production system

Liquid loading

Nodal analysis

Critical gas rate

Transient multiphase flow analysis

References

Bai, Y. and Bai, Q., 2010. Subsea Engineering Handbook, Gulf Professional Publishing, USA, 956p.

Beggs, H.D., 2003. Production Optimization using Nodal^TM Analysis (2^nd Ed), OGCI and Petroskills Publications, USA, 411p.

Coleman, S.B., Clay, H.B., McCurdy, D.G., and Lee Norris, H., 1991. A new look at predicting gas-well load up. J. Pet. Tech, 43(3), 329-333.

Jang, Y.H., Kim, K.H., and Sung, W.M., 2010. The design of the optimal CO₂ injection system by using nodal analysis for gorae v aquifer, Korea. J. of the Korean Society of Mineral and Energy Resources Engineers, 47(6), 862-870.

Jung, S.Y., 2013. Gas Lift Allocation Optimization for Improved Oil Production, MS Thesis, Korea Maritime and Ocean University, Korea, 55p.

Kim, J.H., Ryou, S.S., and Sung, W.M., 2001. Development of a user-interactive nodal analysis model and productivity analysis of donghae-1 gas field. J. of the Korean Society of Mineral and Energy Resources Engineers, 38(1), 42-51.

Kim, Y.S., Lee, J.Y., and Lim, J.S., 2016. Prediction of water production in multi-layer gas reservoirs by production logging-based multi-phase flow simulation. J. of the Korean Society of Mineral and Energy Resources Engineers, 53(6), 592-602.

Li, M., Li, S.L., and Sun, L.T., 2001. New view on continuous-removal liquids from gas wells. Proc. of SPE Permian Basin Oil and Gas Recovery Conference, Midland, USA, 6p.

Luo, S., Kelkar, M., Pereyra, E., and Sarica, C., 2014. A new comprehensive model for predicting liquid loading in gas wells. SPE Production & Operations, 29(4), 337-349.

Nosseir, M.A., Darwich, T.A., Sayyouh, M.H., and El Sallaly, M., 1997. A new approach for accurate prediction of loading in gas wells under different flowing conditions. Proc. of SPE Production Operations Symposium, Oklahoma City, USA, 9p.

Tagore, A., Utgard, M., Ramachandran, K., Paragon, AMEC., Alwazzan, A., and Mcdermott, J.R., 2008. Fluid characteri-zation: impact on deepwater field development. Proc. of SPE Annual Technical Conference and Exhibition, Denver, USA, 5p.

Turner, R.G., Hubbard, M.G., and Dukler, A.E., 1969. Analysis and prediction of minimum low rate for the continuous removal of liquids from gas wells. J. Pet. Tech, 21(11), 1475-1482.

Veeken, C.A.M. and Belfroid, S., 2010b. New Perspective on Gas-Well Liquid Loading and Unloading. Proc. of SPE Annual Technical Conference and Exhibition, Florence, Italy, 20p.

Veeken, K., Hu, B., and Schiferli, W., 2010a. Gas well liquid loading field data analysis and multiphase flow modeling. SPE Production & Operations, 25(3), 275-284.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 54
No :6
Pages :646-654
Received Date : 2016-11-27
Revised Date : 2016-12-03
Accepted Date : 2017-12-22
DOI :https://doi.org/10.12972/ksmer.2017.54.6.646

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

All Issue