摘要
深水测试对于及时发现和准确评价海洋深水油气藏具有重要意义,而深水测试的成功率和效果则是通过深水测试管柱力学研究的结果来评价的,其中测试管柱动力学分析可用以评价测试管柱在各种海况下的安全性。为此,提出了使用幅值响应算子(RAO)来计算钻井船纵荡水平运动和升沉运动的位移随时间响应的方法。把通过大钩补偿系统补偿后的升沉运动载荷作为测试管柱顶端的力边界条件和钻井船的纵荡水平运动位移作为测试管柱顶端的位移边界条件,应用有限元方法对测试管柱进行了动力学分析。研究得出以下结论:①在波浪的作用下,钻井船的升沉运动在3 m内,而钻井船的纵荡位移较大;②随着波高的增大,测试管柱的位移和应力波动幅度增大,而应力平均值则变化不大;③波高在10 m以内,测试管柱是安全可靠的。
Deep water well testing is critical for timely detection and accurate evaluation of deep water reservoirs.The success rate of deep water well testing is evaluated by the results from mechanical analysis of the testing string,which can be used to evaluate its security under various sea conditions.Therefore a method is proposed to adopt response amplitude operator(RAO) to calculate the move and heave motions of the drilling vessel due to the time response.The heave load after being compensated by the hook compensation system is used as the force boundary condition of the top of the testing string,and the horizontal displacement is used as the displacement boundary conditions of the top of the testing string,and the mechanical analysis is conducted by use of the finite element analysis method.The following conclusions are achieved: a.under the influence of waves,a drilling vessel heaves within 3 m,while the surge displacement is large;b.with the increase of wave height,the variation range of the displacement and the stress of the testing string both increase,while the average stress has slight variation;c.the test string will be safe and reliable when the wave height remains less than 10 m.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2011年第1期77-79,115-116,共3页
Natural Gas Industry
基金
国家科技重大专项"深水油气田开发钻完井工程配套技术"子课题"深水井控及测试技术"(编号:2008ZX05026-001-08)
关键词
海洋深水油气藏
测试管柱
钻井船
波浪
动力学
应力
安全性
效果
offshore deep water reservoir,testing string,drilling ship,wave,dynamics,stress,safety,results
作者简介
谢鑫，1984年生，硕士研究生。地址：（610500）四川省成都市新都区西南石油大学硕08级3班。电话13668184703。Email：xiexin841224@163．com
