定向井井眼轨道优化技术研究
发布时间：2018-12-11 18:53
【摘要】：钻定向井是石油钻探开发中的重要手段之一,是一种设计目标(靶区)与井口不在一条铅垂线上的井。钻井施工中影响井眼轨迹的主要因素有地质特性、钻具组合结构、井眼轨迹几何形状、钻井工艺参数。井眼轨迹是上述诸因素互相作用的结果,现场施工难度大,多钟因素可造成实钻井眼轨迹要偏离井眼轨道这一现实。论文在满足钻井工程要求的前提下,综合考虑后续机械采油设备合理运行及节能降耗等问题,优选井眼轨道剖面类型;优选不同垂深与不同水平位移定向井的造斜点垂深以及水平位移的合理界限,指导定向井井眼轨道的设计;在三维轨迹条件下,研究作业管柱井下工具串在套管内直线与弯曲通过的临界条件,指导作业管柱工具串配置方案设计,确保作业管柱的施工安全。针对不同类型定向井井身剖面的特点,建立抽油机举升系统性能参数的计算机仿真方法;综合考虑钻井费用、举升系统性能参数与运行成本等性能指标,优选井身剖面类型、优选不同垂深与不同水平位移定向井的造斜点垂深以及水平位移的合理界限。根据实际井眼三维轨迹与工具串具体结构,研究作业管柱工具串在套管内的受力与弯曲变形规律,建立工具串在套管内直线与弯曲通过界限的力学分析方法。论文建立了井下工具串在三维井眼内直线与弯曲通过临界长度的计算模型,给出了不同规格井下工具直线与弯曲通过的临界长度。同时建立了整体管柱通过性的计算模型。
[Abstract]:Directional well drilling is one of the most important methods in oil drilling and development. It is a kind of well which is not on a lead vertical line between the target area and the well head. The main factors affecting the borehole trajectory in drilling operation are geological characteristics, drilling tool combination structure, borehole trajectory geometry, drilling parameters. The borehole trajectory is the result of the interaction of the above factors. The field construction is difficult and the multi-clock factors can cause the real drilling hole trajectory to deviate from the borehole track. On the premise of meeting the requirements of drilling engineering, this paper synthetically considers the following problems such as rational operation of mechanical oil recovery equipment and energy saving and consumption reduction, so as to optimize the type of borehole track profile. The vertical depth of different vertical depth and horizontal displacement directional well and the reasonable limit of horizontal displacement are selected to guide the hole track design. Under the condition of three dimensional trajectory, the critical conditions for the straight line and bending of the tool string in the casing are studied to guide the design of the tool string configuration scheme and ensure the construction safety of the working string. According to the characteristics of different types of directional wellbore profile, a computer simulation method for the performance parameters of pumping unit lift system is established. Considering the drilling cost, the performance parameters and operation cost of the lifting system, the optimum selection of shaft profile type, the optimum selection of the vertical depth of different vertical depth and different horizontal displacement directional wells, and the reasonable limits of horizontal displacement. According to the 3D trajectory of actual borehole and the concrete structure of tool string, the force and bending deformation of tool string in casing are studied, and the mechanical analysis method of straight line and bending crossing boundary of tool string in casing is established. In this paper, the calculation model of the critical length of straight line and bending passage of downhole tool string in 3D hole is established, and the critical length of straight line and bending passage of downhole tool with different specifications is given. At the same time, the calculation model of the transmissivity of the whole pipe string is established.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE243
本文编号：2373052
[Abstract]:Directional well drilling is one of the most important methods in oil drilling and development. It is a kind of well which is not on a lead vertical line between the target area and the well head. The main factors affecting the borehole trajectory in drilling operation are geological characteristics, drilling tool combination structure, borehole trajectory geometry, drilling parameters. The borehole trajectory is the result of the interaction of the above factors. The field construction is difficult and the multi-clock factors can cause the real drilling hole trajectory to deviate from the borehole track. On the premise of meeting the requirements of drilling engineering, this paper synthetically considers the following problems such as rational operation of mechanical oil recovery equipment and energy saving and consumption reduction, so as to optimize the type of borehole track profile. The vertical depth of different vertical depth and horizontal displacement directional well and the reasonable limit of horizontal displacement are selected to guide the hole track design. Under the condition of three dimensional trajectory, the critical conditions for the straight line and bending of the tool string in the casing are studied to guide the design of the tool string configuration scheme and ensure the construction safety of the working string. According to the characteristics of different types of directional wellbore profile, a computer simulation method for the performance parameters of pumping unit lift system is established. Considering the drilling cost, the performance parameters and operation cost of the lifting system, the optimum selection of shaft profile type, the optimum selection of the vertical depth of different vertical depth and different horizontal displacement directional wells, and the reasonable limits of horizontal displacement. According to the 3D trajectory of actual borehole and the concrete structure of tool string, the force and bending deformation of tool string in casing are studied, and the mechanical analysis method of straight line and bending crossing boundary of tool string in casing is established. In this paper, the calculation model of the critical length of straight line and bending passage of downhole tool string in 3D hole is established, and the critical length of straight line and bending passage of downhole tool with different specifications is given. At the same time, the calculation model of the transmissivity of the whole pipe string is established.
【学位授予单位】：东北石油大学
【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1条
1 董世民;邢明明;张红;柴国红;;基于系统效率最高的抽油机井合理流压研究[J];燕山大学学报;2011年04期
，本文编号：2373052
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