水平井水平段延伸能力研究
发布时间：2018-09-10 07:57
【摘要】：水平井作为一种经济有效的开采手段,钻水平井是钻井装备能力和钻井技术的综合体现,但是水平井延伸极限能力受诸多因素的制约。因此,本文对水平井的钻进延伸极限开展研究,为水平井的钻进延伸极限进行预测,降低钻井风险提供一定的理论指导。 本文对水平井的钻柱进行了静力学分析,放弃传统模型中刚性井壁的假设,建立考虑地基反力的摩阻扭矩计算模型,将水平井水平段视为从钻头处向左的半无限长梁,得到地基反力影响下的曲线微分方程并进行实例计算。 为钻前准确地对钻进延伸极限值进行预测,指导钻井作业,分别计算钻进水力延伸极限和钻进机械延伸极限两个方面的极限。 对于水平井的水力延伸极限,主要分析了地层因素、钻井泵能力以及环空压耗对延伸极限的影响。针对主要影响因素环空压耗进行分析,同时评价国内某油田某水平井的水力延伸能力。 水平井延伸能力的评价方法是首先计算机械延伸极限、水力延伸极限,再结合钻柱强度校核进行综合评价,取机械延伸极限和水力延伸极限最小值即为水平井延伸极限值。 本文对水平井的延伸能力进行了分析研究,不但涉及了水平井的力学分析,还涉及了水平井在各种复杂工况下的摩阻扭矩计算,为提高水平井的延伸能力提供理论参考,对于提高水平井的延伸能力具有一定指导意义。
[Abstract]:Horizontal well is an economical and effective means of exploitation. Drilling horizontal well is a comprehensive reflection of drilling equipment and drilling technology. However, the ultimate drilling capacity of horizontal well is restricted by many factors. For certain theoretical guidance.
In this paper, the static analysis of drill string in horizontal well is carried out, the assumption of rigid shaft lining in traditional model is abandoned, and the calculation model of friction and torque considering ground reaction is established. The horizontal section of horizontal well is regarded as a semi-infinite beam from bit to left, and the curve differential equation under the influence of ground reaction is obtained.
In order to predict the drilling extension limit accurately before drilling and guide drilling operation, the drilling hydraulic extension limit and the drilling mechanical extension limit are calculated respectively.
For the hydraulic extension limit of horizontal wells, the influence of formation factors, drilling pump capacity and annulus pressure loss on the extension limit is mainly analyzed.
The evaluation method of horizontal well extensibility is firstly the mechanical extension limit, hydraulic extension limit, and then combined with drill string strength check for comprehensive evaluation.
In this paper, the extensibility of horizontal wells is analyzed and studied. It involves not only the mechanical analysis of horizontal wells, but also the calculation of frictional resistance and torque of horizontal wells under various complicated working conditions. It provides theoretical reference for improving the extensibility of horizontal wells and has certain guiding significance for improving the extensibility of horizontal wells.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE243
本文编号：2233842
[Abstract]:Horizontal well is an economical and effective means of exploitation. Drilling horizontal well is a comprehensive reflection of drilling equipment and drilling technology. However, the ultimate drilling capacity of horizontal well is restricted by many factors. For certain theoretical guidance.
In this paper, the static analysis of drill string in horizontal well is carried out, the assumption of rigid shaft lining in traditional model is abandoned, and the calculation model of friction and torque considering ground reaction is established. The horizontal section of horizontal well is regarded as a semi-infinite beam from bit to left, and the curve differential equation under the influence of ground reaction is obtained.
In order to predict the drilling extension limit accurately before drilling and guide drilling operation, the drilling hydraulic extension limit and the drilling mechanical extension limit are calculated respectively.
For the hydraulic extension limit of horizontal wells, the influence of formation factors, drilling pump capacity and annulus pressure loss on the extension limit is mainly analyzed.
The evaluation method of horizontal well extensibility is firstly the mechanical extension limit, hydraulic extension limit, and then combined with drill string strength check for comprehensive evaluation.
In this paper, the extensibility of horizontal wells is analyzed and studied. It involves not only the mechanical analysis of horizontal wells, but also the calculation of frictional resistance and torque of horizontal wells under various complicated working conditions. It provides theoretical reference for improving the extensibility of horizontal wells and has certain guiding significance for improving the extensibility of horizontal wells.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE243
【参考文献】
相关期刊论文 前10条
1 张建群,孙学增,赵俊平;定向井中摩擦阻力模式及其应用的初步研究[J];大庆石油学院学报;1989年04期
2 代奎,阎铁;水平井井眼摩阻因数的确定方法[J];大庆石油学院学报;1995年03期
3 郭永峰,金晓剑,谭树人;用非线性有限元法预测南海水平井摩阻[J];中国海上油气.工程;2000年02期
4 郭晓乐;汪志明;;大位移井循环压耗精确计算方法研究及应用[J];石油天然气学报;2008年05期
5 牟艳宇;张艳华;冯雷;;钻柱旋转对大斜度井岩屑运移的影响研究[J];科学技术与工程;2010年15期
6 罗伟;付建红;宋科熊;许超;;大位移井水平井极限延伸长度预测研究[J];科学技术与工程;2013年35期
7 任文希;王煜;程纯勇;聂秋露;何谦;;长水平段水平井机械水力延伸能力研究[J];石油化工应用;2014年05期
8 廖华林,丁岗;大位移井套管柱摩阻模型的建立及其应用[J];石油大学学报(自然科学版);2002年01期
9 宋执武,高德利;底部钻具组合二维分析新方法[J];石油大学学报(自然科学版);2002年03期
10 宋洵成;管志川;陈绍维;;斜井岩屑运移临界环空流速力学模型[J];中国石油大学学报(自然科学版);2009年01期
相关博士学位论文 前1条
1 刘维凯;大位移井钻柱力学分析及延伸能力研究[D];大庆石油学院;2008年
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