第07章 地层测试管柱力学分析.pdf

32 4 V o l. 32 N o. 4 2 011 7 A CT A PET R OLEI SIN ICA July 2 01 1 : 0253- 2697 ( 2 01 1) 04-0 70 9- 0 8 1 2 2 2 李子丰 蔡雨田 李冬梅 徐燕东 ( 11 066004; 21 830011) : 地层测试是油气田勘探和开发的重要过程在地层测试过程中, 测试管柱在多种载荷作用下, 形成 杂的应力和应变, 有时 会引起管柱的屈服破坏断脱破坏或发生永久性的螺旋屈曲, 造成较大的经济损失根据地层测试作业过程, 考虑井眼轨道测试 管柱的组成井内流体的性能管柱内外压强管柱与井壁的摩擦系数地温梯度空气温度油管温度测试阀的类型封隔器的类 型封隔器的活塞效应管柱螺旋失稳效应等参数, 建立了测试管柱在整 个作业阶段的力学分析数学模型, 并用差分法求解, 给出沿 整 个管柱的拉力扭矩应力安全系数稳定性伸长等参数用V isual Basic 20 08 编制了计算软件, 并进行了现场应用 : 地层测试; 试油; 试气; 管柱力学; 数学模型 : T E2 491 6 : A Mechanical analysis of pipe string in formation testi ng 1 2 2 2 L I Z i eng CA I Y ut ian LI Dongm ei XU Y andong ( 1. P etroleum Eng ineering I nstitute , Yanshan Univ ers ity , Qinhuangdao 06 60 04, China; 2. Engineering T echnology I nstitute, Sino ec N orthw est Oilf ield Com any , Urumqi 830 01 1, China) Abstract: F ormat ion testing is an impor tant pro cedure in o i-l g as ex plo ratio n and dev elopment . During w hich, pipe st ring may pro duce co mplicated st ress and st rain under actions o mani o ld loads, sometimes it may ev en su er ro m y ield ailure, break or permanently helical buckling, resulting in sev ere economic loss . O n the basis o o per ating pr ocedur es o o rmatio n test ing, mathematical models or mechanical analy sis during the w hole t esting operation w er e established by taking var iou s par ameters into account , such as w ell- bor e traj ecto ry , com position o pipe str ing, pro per ty o bo rehole luid, inter nal and exter nal pr essure intensit y, r iction