摘要
隨着天然气开发在我国取得的突破性迅猛发展,气井生产管柱的优化设计在采气工程和现代完井中的作用显得越来越重要。针对为满足深井油管强度要求,常采用带液能力差的不同油管直径组合生产管柱、严重影响气井稳定生产的突出矛盾,开展了深井不同壁厚组合生产管柱优化设计与应用的研究。文中研究成果的应用表明,为了有利排液,对于小于6000m的深井,生产管柱完全可采用既满足油管强度要求、又满足下入深度要求的组合壁厚油管柱优化设计,以取代组合直径油管柱设计。文中推导的不同壁厚组合生产管柱最大安全下入深度设计数学模型、当最大安全下入深度为已知时,求解组合壁厚油管柱实时安全系数数学模型,为不同壁厚组合生产管柱取代不同油管直径组合的生产管柱优化设计,提供了可供借鉴的技术支撑和有效工具。
For poor carrying fluid capacity,the common combined production strings with difference tubing diameter have affected severely the gas well production,in order to meet the requirement of tubing strength in ultra-deep well,the optimization design of combined production string with difference wall thickness was researched.The application results showed that the optimized combined production string could not only meet the requirement of landing depth,but also could improve carrying fluid capacity in less than 6000m ultra-deep well.The mathematical models on safety landing depth and real-time safety factor of combined production strings with difference wall thickness in ultra-deep well were derived,it provided the technical support and effective tools for combined production strings with difference wall thickness replacing the combined production strings with difference tubing diameter.
出处
《钻采工艺》
CAS
北大核心
2012年第6期81-84,12,共4页
Drilling & Production Technology
关键词
深井
油管
组合生产管柱
优化设计
ultra-deep well,tubing,combined production string,optimization design,research
