摘要
目前国内外对深水气井测试的研究工作主要集中在深水钻完井、管柱受力分析和水合物预测方面,对于深水气井测试流动保障这一领域还未深入开展研究。从渗流理论出发,结合井筒流动模型和井筒温度模型,将形成的气藏-井筒耦合模型与预测水合物的p-T图统一起来,预测深水情况下水合物生成的位置比单纯的井筒模型预测结果更为精确。通过分析影响水合物形成的影响因素,给出多种情况下相应的防治措施,从而保障测试的顺利进行。以南海荔湾的某口井资料进行测试验证了该方法的合理性。
At present,research on deepwater gas well testing was concentrated on deepwater drilling and completion,stress analysis on casing strings and hydrate prediction,but for deepwater gas-well flow assurance,it was not deeply studied. Starting from percolation theory and integrated with wellbore flow model and wellbore temperature model,a reservoir-wellbore coupling mode was integrated with P-T diagram for hydrate prediction,which could be deployed for predicting the hydrate position in deepwater,its result was more accurate that of a single wellbore model. By analyzing the factors affecting the formation of hydrates,many appropriate preventive measures are provided to safeguard the smooth operation of the test. And data of a certain well in Liwan Oilfield of the South China Sea are used to verify that the method is reasonable.
出处
《石油天然气学报》
CAS
CSCD
2014年第5期149-152,9,共4页
Journal of Oil and Gas Technology
基金
国家科技重大专项(2011ZX05026-001-07)
关键词
深水气井
气井测试
气藏-井筒耦合模型
水合物
流动
deepwater gas well
gas well test
coupling model of gas reservoir-wellbore
hydrate
flow
