塔河油田同心随钻扩眼钻柱动力学研究
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摘要
老井侧钻是解决塔河油田含水率增加的主要技术,但井眼直径变小会对后续作业产生很大的影响,应用随钻扩眼技术可以解决此问题。但也存在钻柱动力学稳定性差、扩眼效果不理想和钻速低等问题。基于弹性力学理论及有限元分析方法,考虑弯曲井眼中钻柱受力、钻柱结构和领眼钻头与扩眼工具处钻压扭矩分配等因素的影响,由该区一口实例井扩眼参数建立了侧钻井同心随钻扩眼钻柱瞬态动力学模型。并研究BHA在小井眼中的运动状态,全钻柱关键位置动应力变化、井口轴向力、井口扭矩、钻柱轴向加速度和钻柱等效应力随加载时间的变化,模拟结果可为研究同心随钻扩眼钻柱的动力学性能和优化随钻扩眼施工参数提供了理论支持。
Old well sidetracking is the main technical solutions to cut the moisture content in Tahe Oilfield,but borehole diameter becomes small,which have a great influence on the following processing. The problem can be solved by using the reaming technology while drilling. However,there are some disadvantages,such as the poor stability of the drill string,the bad reaming effect and the low drilling rate. Based on the elasticity and FEM method,considering the force applied on the drill string in curved section,structural characteristics of the drill string as well as WOB and torque distribution on the reamer bit,the models of concentric re-entry RWD drill string dynamics were built. The motion state of the BHA in the slim hole was analyzed,the dynamic force change at the key position of full drill-string,axial force of the wellhead,wellhead torque,drilling string axial acceleration,drill string equivalent stress changes with the loading time. The simulation results could provide theoretical support for the study of the dynamic performance of the reaming drill string and the optimization of construction parameters in the concentric reaming process.
Old well sidetracking is the main technical solutions to cut the moisture content in Tahe Oilfield,but borehole diameter becomes small,which have a great influence on the following processing. The problem can be solved by using the reaming technology while drilling. However,there are some disadvantages,such as the poor stability of the drill string,the bad reaming effect and the low drilling rate. Based on the elasticity and FEM method,considering the force applied on the drill string in curved section,structural characteristics of the drill string as well as WOB and torque distribution on the reamer bit,the models of concentric re-entry RWD drill string dynamics were built. The motion state of the BHA in the slim hole was analyzed,the dynamic force change at the key position of full drill-string,axial force of the wellhead,wellhead torque,drilling string axial acceleration,drill string equivalent stress changes with the loading time. The simulation results could provide theoretical support for the study of the dynamic performance of the reaming drill string and the optimization of construction parameters in the concentric reaming process.
引文
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3 况雨春,马德坤,刘清友,等.钻头向岩石系统动态行为仿真.石油学报,2001;22(3):81—85Kuang Y C,Ma D K,Liu Q Y,et al.Dynamic behavior of rock drill to system simulation.Acta Petrolei Sinica,2001;22(3):81—85
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5 马清明,王瑞和.随钻扩眼工具的动力学仿真研究.石油钻采工艺,2007;28(6):4—7Ma Q M,Wang R H.Dynamics simulation research on drilling reaming tools.Oil Drilling&Production Technology,2007;28(6):4 —7
6 石晓兵,陈平,熊继有.油气深井随钻扩眼钻柱扭转振动分析.西南石油大学学报(自然科学版),2008;30(6):81—84Shi X B,Chen P,Xiong J Y.Analysis of torsional vibration of the drilling string in deep well with oil and gas drilling.Journal of Southwest Petroleum University(Natural Science Edition),2008;30(6):81 —84
7 马汝涛,郑岩,纪友哲,等.随钻扩眼钻压分配的双因素计算方法.石油机械,2012;40(1):26—28Ma R T,Zheng Y,Ji Y Z,et al.Double factor calculation method for distribution of drilling and expanding pressure.Petroleum Machinery,2012;40(1):26—28
8 Meyer-Heye B,Reckmann H,Ostermeyer G.Weight distribution in reaming while drilling BHAs.IADC/SPE Drilling Conference and Exhibition,Society of Petroleum Engineers,2010
9 Miller G C,Childers R D.Innovative concentric reamer enhances deepwater drilling operations.SPE Annual Technical Conference and Exhibition.Society of Petroleum Engineers,2003
10 张焱,陈平.深井中钻柱动力学机理研究.石油机械,1998;26(7):17—20Zhang Y,Chen P.Kinetic mechanism of the drill string in deep wells.Petroleum Machinery,1998;26(7):17—20
2 李茂生.小环空条件下钻柱动力学及可靠性研究.东营:中国石油大学(华东),2007Li M S.The small empty condition of drilling string dynamics and reliability research.Dongying:China University of Petroleum(East China),2007
3 况雨春,马德坤,刘清友,等.钻头向岩石系统动态行为仿真.石油学报,2001;22(3):81—85Kuang Y C,Ma D K,Liu Q Y,et al.Dynamic behavior of rock drill to system simulation.Acta Petrolei Sinica,2001;22(3):81—85
4 Apostal M C,Haduch G A,Williams J B.A study to determine the effect of damping on finite-element-based forced-frequency-response models for bottom hole assembly vibration analysis.SPE Annual Technical Conference and Exhibition.Society of Petroleum Engineers,1990
5 马清明,王瑞和.随钻扩眼工具的动力学仿真研究.石油钻采工艺,2007;28(6):4—7Ma Q M,Wang R H.Dynamics simulation research on drilling reaming tools.Oil Drilling&Production Technology,2007;28(6):4 —7
6 石晓兵,陈平,熊继有.油气深井随钻扩眼钻柱扭转振动分析.西南石油大学学报(自然科学版),2008;30(6):81—84Shi X B,Chen P,Xiong J Y.Analysis of torsional vibration of the drilling string in deep well with oil and gas drilling.Journal of Southwest Petroleum University(Natural Science Edition),2008;30(6):81 —84
7 马汝涛,郑岩,纪友哲,等.随钻扩眼钻压分配的双因素计算方法.石油机械,2012;40(1):26—28Ma R T,Zheng Y,Ji Y Z,et al.Double factor calculation method for distribution of drilling and expanding pressure.Petroleum Machinery,2012;40(1):26—28
8 Meyer-Heye B,Reckmann H,Ostermeyer G.Weight distribution in reaming while drilling BHAs.IADC/SPE Drilling Conference and Exhibition,Society of Petroleum Engineers,2010
9 Miller G C,Childers R D.Innovative concentric reamer enhances deepwater drilling operations.SPE Annual Technical Conference and Exhibition.Society of Petroleum Engineers,2003
10 张焱,陈平.深井中钻柱动力学机理研究.石油机械,1998;26(7):17—20Zhang Y,Chen P.Kinetic mechanism of the drill string in deep wells.Petroleum Machinery,1998;26(7):17—20