G-H1定向井井眼轨迹设计与控制研究

发布时间：2018-01-07 22:24

  本文关键词：G-H1定向井井眼轨迹设计与控制研究　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

  更多相关文章： 定向井 井眼轨道 影响因素 设计 轨迹控制

【摘要】：石油天然气作为一种主要能源,已经成为世界性产业革命的支柱。随着对油气需求的日益增长和勘探开发程度的不断提高,石油钻井所面临的地质环境越来越复杂。有些油气资源埋藏于城镇、沼泽、湖泊、海样、河流、高山、森林等复杂条件,必须采用定向井进行有效的开发。定向井技术是当今世界石油勘探开发领域最先进的钻井技术之一,其优越性就在于可以跃过地面上的障碍,采取斜式、水平式钻进,直达目标。在钻井过程中,由特殊井下工具、测量仪器和工艺技术有效控制井眼轨迹,使钻头沿着特定方向钻达地下预定目标。这个特定方向首先应进行井身剖面及井眼轨迹设计,井眼轨迹的质量直接影响到定向井的质量。本文以定向井井眼轨迹设计与控制为目标,研究了定向井井眼轨迹的设计参数及计算方法,分析了G-H1井井眼轨迹控制的影响因素。根据定向井的设计条件及设计原则,结合G-H1井的实际地层情况,设计了该井的井眼轨迹,计算了各节点处的参数,包括井斜角、方位角、垂深、北坐标、东坐标、水平长度、井斜率、方位率、井眼曲率,设计了适合于G-H1定向井的井身剖面及轨道。通过计算方位转角以及扭造斜工具装置角实现了井眼轨迹的控制。研究了定向井轨迹控制工艺技术,主要包括井斜控制和方位控制两个方面,钻井过程中的控制工艺是着陆控制和水平控制工艺。研究表明,影响定向井井眼轨迹控制的因素主要包括地层特征、下部钻具结构、井眼的几何形状以及工艺参数等等。G-H1井的井眼轨迹采用“直—增—稳—增—增—增—增—稳—增—降—平”的十一段式,定向井轨迹设计成“勺”型。钻井过程中在A1点处增加了100~300米左右泥岩段,保证了固井质量,减小了G-H1井油层上部水层对水平段油层的威胁。通过计算G-H1井方位转角以及扭造斜工具装置角,通过着陆控制和水平控制的工艺技术实现定向井的井斜控制和方位控制。在钻井过程中,为了使实钻轨迹偏离设计轨道不要太远,要及时进行测斜并采取措施进行轨迹控制。该井实际完钻参数与设计参数一致,实现了了G-H1定向井轨道控制。
[Abstract]:Petroleum and natural gas as a major energy source, has become a pillar industry of the world revolution. With the growing demand of oil and gas exploration and development and constantly improve the level of oil drilling, facing the geological environment becomes more and more complex. Some oil and gas resources are buried in the town, swamps, lakes, rivers, mountains, sea, forest and other complex conditions, the need for effective development of directional well. The directional drilling technology is one of the most advanced drilling technology in the field of oil exploration and development in the world, its superiority lies in the over ground obstacles, adopt inclined, horizontal drilling, direct target. In the process of drilling, by special downhole tools. The measurement instrument and the technology of effective control of well trajectory, the drill bit along the specific direction of the underground drilling target. This particular direction should be made well profile and well trajectory design, well trajectory Quality directly affects the quality of directional wells. Based on the directional well trajectory design and control for the target, design parameters and calculation method of directional well trajectory, analyzes the influencing factors of G-H1 well trajectory control. On the basis of the design of directional wells and design principles, combined with the actual situation of the formation of well G-H1 the design of the well trajectory of the wells, the parameters of each node are calculated, including inclination, azimuth, vertical depth, North East coordinate, coordinates, horizontal length, slope wells, range rate, hole curvature, design well profile and track for G-H1. Through the calculation of directional wells azimuth angle and torsion angle deflecting tool device realizes well trajectory control. On the control technology of directional well trajectory, including deviation control and orientation control two aspects of process control in the process of drilling is landing control and level of control technology. Yi. Research shows that the influence factors of directional well trajectory control mainly includes the formation features of BHA structure, geometry and process parameters on.G-H1 well trajectory of the wellbore by using eleven section straight - by - steady - - - increase - increase by increasing - steady - increasing drop - ping "the directional well trajectory design into the" spoon ". In the process of drilling at the A1 point increase of 100~300 meters of mudstone, ensure cementing quality, reduce the G-H1 reservoir in upper water reservoir. The level of threat by calculating G-H1 well orientation angle and torsional deflecting device through the angle of deviation control and to control the implementation of directional well technology landing control and level control. In the process of drilling, in order to make the actual drilling trajectory deviates from the designed track not too far to timely survey and take measures for trajectory control. The actual wells drilled. The number is consistent with the design parameters, and the track control of the G-H1 directional well is realized.

【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】：TE243
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本文编号：1394498