WELLPLAN_培训.ppt

WELLPLAN Training Course,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,完整的循环系统分析，钻头水眼优选，压力损耗，抽吸激动压力和井眼清洁计算等。提供了工程师在进行水力学设计分析所需的所有程序。,主要计算模块： 具体排量下的压力变化关系 变排量下压耗分布关系 排量与钻头外参数关系 抽吸/激动下各环节压力变化情况 喷嘴优化方案 井眼清洁度计算,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点：优化排量 从系统压耗程度来优化,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点：优化排量 从井眼清洁度来优化,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点：优化排量 从环空返速来优化,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点：优化排量 从钻头冲击力、水马力、流速、钻头压降来优化,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点：优化排量 从井眼清洁度来优化,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点： 某一排量下的各坏节的压耗（包括钻柱内、环空、钻头及各接对、工具等环节的微量压力损耗），有效监控地层承受的压力变化。当量循环密度的研究用以解决孔隙压力及破裂压力的问题。,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点：喷嘴参数优选,两种方法：分别适用于施工设计与现场计算 喷嘴优先方式： 最大水马力 最大冲击力 最大水眼流速 最大钻头压降百分比,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,功能特点：抽吸和激动压力的分析,有效监控起下钻过程中各特定井深处的压力变化,功能特点：井眼清洁度计算,有效监控起下钻过程中各特定井深处的压力变化 压力和当量循环密度的计算用以确定起下钻速度范围 对特殊的起下钻推荐操作步骤 开泵和停泵情况下的抽吸激动压力 在开泵的条件模拟循环,钻完井施工综合设计 水力学计算WELLPLAN.Hydraulics,扭矩与摩阻分析 WELLPLAN.Torque/Drag,该模块能精细计算钻井作业过程中的钻柱所受到的扭矩与摩阻，不但在钻井设计中大大提高了效率，而且可以结合施工的具体参数进一步校正计算结果，进一步提高精度，不但辅助工程师设计井眼轨迹与优选钻柱组合，而且能够预测钻井作业过程钻柱的受力趋势，有效避免了卡钻、钻柱失效等等事故。,适合于六种作业方式 旋转钻井 马达钻井 下钻 起钻 钻头提离井底旋转 倒划眼 不但用于钻井设计，而且可辅助下套管作业设计,Torque/Drag Mode,钻完井施工综合设计 扭矩与摩阻分析 WELLPLAN.Torque/Drag,初设摩擦系数,获得施工参数 校正摩擦系数,精确判断钻柱工作状况 预测钻柱将要受到的应力,调整、优化作业参数,经验数值或者landmark推荐数值,计算钻柱所受应力（拉、压、剪切、弯曲、侧向或者综合应力等） 调整井眼轨迹，设计最佳钻具组合 计算钻机能力（最大钻井深度） 研究不同泥浆或润滑液对扭矩和摩阻影响,计算扭矩与摩阻 设计作业参数,指重表、转盘/井下动力扭矩与转速 快速计算摩擦系数，提供经验,计算钻柱所受应力，判断是否发生（正弦、螺旋）弯曲 预测钻柱将要受到的应力和可能发生的事件 避免因弯曲和疲劳产生的事故发生，帮助您找到钻具的失效点 使接触力最小从而避免套管磨损 监测接触力以预测套管摩损和键槽卡钻,优化钻具组合，调整钻压、转速、上提/下压力,Normal analysis:钻柱在某一具体深度时的分析 Calibrate Friction:摩擦系数校正 Drag Charts:钻柱钻进预测，分析钻某一井段过程中的参数变化 Top-Down Analysis:从井口参数分析井下钻柱受力状况,Torque/Drag Mode,钻完井施工综合设计 扭矩与摩阻分析 WELLPLAN.Torque/Drag,计算钻柱所受应力,钻完井施工综合设计 扭矩与摩阻分析 WELLPLAN.Torque/Drag,判断所设置的摩擦系数的可靠性，并用实际施工参数来修正摩擦系数,钻完井施工综合设计 扭矩与摩阻分析 WELLPLAN.Torque/Drag,修正后的计算结果，精确判断钻柱工作情况，及可能会发生的事件,钻完井施工综合设计 扭矩与摩阻分析 WELLPLAN.Torque/Drag,疲劳计算，有效找出钻柱失效点，帮助调整钻井参数,钻完井施工综合设计 扭矩与摩阻分析 WELLPLAN.Torque/Drag,优选钻压、转速等参数，避免发生钻柱弯曲,Actual pick-up loads are always greater than indicated while slack-off loads are always less than indicated. Errors in hook-load determination can be of the order of 20 percent Efficiency is the energy efficiency of an individual sheave (97.598% correlate with field results).,The viscous fluid effects cause differing torque and drag on the string depending on the pipe rotation and trip speeds.,What is the difference between the Effective and True Tension Plots?,View Report Detail Report contains:,Buoyancy Method,The pressure area method computes the axial forces in the work string by calculating all the forces acting on the work string, and solving the neutral point using the principle of equilibrium. Using this method, the axial force and axial stress is exactly zero at the neutral point. Effective Plots,Pressure Area Method,Using the buoyancy method, the axial force at the neutral point is not zero. The axial force and stress is equal to the hydrostatic pressure at the depth of the neutral point. Because hydrostatic pressure alone will never cause a pipe to buckle, the buoyancy method is used to determine if and when buckling occurs. True Tension Plots,What is the difference between the Buoyancy and Pressure Area Method?,Bending Stress Magnification (BSM),The bending stress magnification factor (BSM) is defined as the ratio of the maximum of the absolute value of the curvature in the drillpipe body divided by the curvature of the hole axis. The BSM is applied as a multiplier on the bending stress calculation. This modified bending stress is then used in the calculation of the von Mises stress of the drillpipe.,Von Mises Stress,底部钻具组合分析 - BHA Drill Ahead,The bit will drill in the direction it is pointed. The bit will cut sideways due to the presence of side forces generated in the inclination and direction axes. The formation has isotropic rock properties.,Check to turn on the alculation of the nodal torque due to riction. The nodal torque affects the initial static solution of the displaced shape of the bottom hole assembly. If you do not check this box, the only torque that will be applied to the string is the specified torque at bit.,底部钻具组合分析 - BHA Drill Ahead,底部钻具组合分析 - BHA Drill Ahead,Bit coefficients indicate how efficient a bit will cut sideways. Values for bit coefficient range from 1 - 100. Note that a value of 0 indicates the bit does not cut sideways, and the wellbore trajectory will be based solely on bit tilt.,Bit Coefficient,底部钻具组合分析 - BHA Drill Ahead,Bit Coefficient,The values for fixed cutter bit coefficients are more difficult to determine from the IADC classification system. Cutter size, density, and placement impact the determination of bit coefficient.,底部钻具组合分析 - BHA Drill Ahead,Formation Hardness,Formation hardness is a number between 0 and 60, with the larger numbers indicating the relative hardness of the formation.,底部钻具组合分析 - BHA Drill Ahead,What does the message “Non-Converged Solution-Step size below minimum“ mean?,This message appears when the BHA calculations cannot arrive at a solution using the string, wellbore, and other information provided. Many times this message occurs when the BHA is complicated, or has many small components. Reducing the number of components in the BHA may allow the calculations to find a solution.,底部钻具组合分析 - BHA Drill Ahead,Tortuosity Plot,Tortuosity is designed to apply a “rippling“ or “roughness“ to a planned wellpath to simulate