The Influx Management Envelope(IME)is a tool for operational decision making when managing influxesin Managed Pressure Drilling(MPD)operations.There have been numerous developments to the IME inrecent years,and it is gaining traction over the MPD Operating Matrix(MOM).Calculation of the IME canbe done in different ways.The original approach of calculating an IME described in(Culen et al.2016),give less acceptable influx sizes than using multiphase simulations.Some of this can be attributed to theused Equation of State(EOS),and some to the distribution of gas in the wellbore.There is ongoing workfor creating purpose-built tools for generating IME's that consider the gas as a single bubble,but with areal gas EOS,as well as considering gas distribution.In this work,the sensitivity to the model used whencreating an IME is studied.This is done through comparing the single-bubble real-gas IME by(Berg et al.2019)with IME's generated using Drillbench Dynamic Well Control as well as the commercial multiphaseflow simulator Ledaflow for synthetic test wells.Discrepancies between the results are discussed and thedifferences in the underlying model and calculation procedure with respect to the end IME is elaborated.
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机译：涌入管理信封（IME）是在管理涌入施控的压力钻井（MPD）操作时进行操作决策的工具。对IME的众多发展是众多的岁月，并且它在MPD运行矩阵（MOM）上获得牵引力。计算IME以不同的方式完成。计算IME的原始方法（Culen et al.2016），除了使用多相模拟，给出了不太可接受的流入尺寸。这可能归因于国家的过去方程（EOS ）以及一些到井眼中的气体分配。正在进行的努力创建用于产生IME的目的制造的工具，以便将气体作为单一泡沫，但是用面积气体EOS，以及考虑气体分配。在这项工作中，研究了当使用IME时使用的模型的敏感性。这是通过将单泡真实气体IME（Berg等，2019）与使用钻粗井控制以及商业进行比较来进行（Berg et al.2019）。 IAIL MultiPASFLOF模拟器LEDAFLOW用于合成测试井。结果在结果之间进行了讨论的，并且阐述了底层模型和相对于最终IME的计算过程中的分支。
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