笔架岭地区水平井卡钻事故预测与处理研究

发布时间：2018-05-27 13:07

本文选题：卡钻 + 水平井　；参考：《东北石油大学》2017年硕士论文

【摘要】：现阶段,水平井钻井工艺及相关的技术已经成为快速对油气田进行开发的重要方法之一。而在水平井作业工作中,卡钻事故最为常见。其由于发生较为频繁,且处理工艺繁杂,会对水平井技术的顺利实施以及油气资源的有效开采产生巨大的影响。因而,国内外的相关研究工作者越来越重视对卡钻事故的预防以及解决。本文在结合了钻井设计以及施工参数的基础上,建立了一种针对水平井卡钻事故预测及处理的方法,能够对卡钻事故作出快速的预测,并对其处理方法作出评价。文章首先针对已有的水平井卡钻事故的预测以及处理技术,进行了细致的研究,在对RSI卡钻安全指数进行研究的基础上,结合井内温度的改变对于钻井液性能的影响,建立了适合宾汉模式以及幂律模式的水平井卡钻事故预测模型,根据预测分析结果可优化钻井液性能参数与钻井液排量,以此有效提高卡钻安全指数值,降低水平井卡钻事故发生的风险。在考虑摩阻载荷的条件下,以钻柱力学、材料力学的理论与方法为基础,建立了复合钻柱卡点位置求解计算方法,该方法采用循环迭代求解卡点位置,适用于水平井卡钻事故后卡点位置的准确计算。摩阻载荷是水平井解卡过程中不可忽略的因素,本文对水平井卡钻事故上提解卡过程中的井口载荷进行求解分析,并对钻杆抗拉安全性能进行评估;运用钻柱振动理论、动量守恒定律、能量守恒定律等相关理论对震击解卡过程及解卡效果进行了详细分析,并建立了震击解卡过程力学模型,该计算模型有效消除了摩阻力对震击力计算结果的影响,适用于水平井、大位移井中震击解卡过程震击力的求解分析,可以有效分析水平井钻井过程中卡钻风险,并在卡钻事故发生后对卡点位置计算、事故处理方法分析、解卡效果评估分析提供了有力的决策依据。
[Abstract]:At present, horizontal well drilling technology and related techniques have become one of the important methods for rapid development of oil and gas fields. In the horizontal well operation, drilling jam accident is the most common. Due to its frequent occurrence and complicated treatment process, it will have a great impact on the smooth implementation of horizontal well technology and the effective exploitation of oil and gas resources. Therefore, researchers at home and abroad pay more and more attention to the prevention and solution of drilling jam accidents. On the basis of combining drilling design and construction parameters, a method for prediction and treatment of drilling jam accidents in horizontal wells is established in this paper, which can make rapid prediction and evaluation of drilling jam accidents. In this paper, first of all, according to the existing prediction and treatment technology of drilling jam accidents in horizontal wells, a detailed study is carried out. On the basis of the study of RSI drilling safety index, combined with the influence of the change of in-well temperature on the drilling fluid performance, According to the prediction results, the drilling fluid performance parameters and the drilling fluid displacement can be optimized, which can effectively improve the safety index value of drilling jam. Reduce the risk of drilling accidents in horizontal wells. On the basis of the theory and method of drill string mechanics and material mechanics, a method for calculating the point position of compound drill string is established under the condition of considering friction load. It is suitable for accurate calculation of the location of clamping point after drilling accident in horizontal well. Friction load is a factor that can not be ignored in the process of unblocking in horizontal wells. This paper solves and analyzes the wellhead load in the process of lifting the card during the drilling accident of horizontal wells, and evaluates the safety performance of drill pipe tensile resistance, and applies the theory of drill string vibration to evaluate the safety performance of drill pipe tensile resistance. Relevant theories such as momentum conservation law, energy conservation law and so on, have carried on the detailed analysis to the shock debacle unlocking process and the unlocking effect, and established the mechanical model of the shock debacle unlocking process. The model effectively eliminates the influence of friction on the calculation results of shock force, and is suitable for the calculation of shock force in horizontal wells and extended reach wells, and can effectively analyze the risk of drilling jam during horizontal well drilling. It also provides a powerful decision basis for the calculation of the location of the sticking point, the analysis of the accident treatment method and the evaluation of the effect of the card unlocking after the drill jam accident occurs.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE28

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