杜84区块水平井钻井配套技术研究与应用

发布时间：2018-06-27 21:10

本文选题：水平井 + 油藏部署　；参考：《东北石油大学》2015年硕士论文

【摘要】：水平井钻井技术是指利用特殊的井底动力工具与随钻测量仪器,钻成井斜角大于86o,并保持这一角度钻进一定长度井段的定向钻井技术。在油气田开发中,水平井可以增加目的层长度,增大泄油面积,数倍地提高油气产量。水平井钻井技术包括随钻测量技术、井眼轨迹控制技术、井壁稳定技术和钻井完井液技术等。从垂直井段转变为水平井段的曲率半径越小,施工难度越大。通过对辽河油田杜84块地质状况的分析,开展了油藏部署设计研究、水平井、侧钻水平井钻井工艺技术及工具仪器配套研究、稠油热采防砂工艺技术研究、钻井液完井液技术研究和短半径侧钻水平井技术研究。在杜84块部署水平井、侧钻水平井19口,完成9口水平井、侧钻水平井的地质轨迹跟踪。改进后的螺杆钻具其造斜能力可提高10%~20%,满足轨迹控制的需要,井眼轨迹控制精度可达±1m左右。在保证施工安全和不污染油层的前提下,用一套泥浆体系完成造斜井段和水平井段的施工。针对不同区块采用不同的防砂筛管效果显著。完成了短半径侧钻水平井理论研究和计算机软件的编制,以及配套工具、仪器的改进。共完成水平井、侧钻水平井9口,油层钻遇率在87%以上。水平井配套技术可以为辽河油田开拓国内外市场,为增加经济增长点提供了有力的技术支撑。
[Abstract]:Horizontal well drilling technology refers to the directional drilling technology that uses special bottom hole power tools and drilling measuring instruments to drill the well slope greater than 86o and keep this angle into a certain length well. In the development of oil and gas field, horizontal wells can increase the length of the target layer, increase the oil discharge area, increase oil and gas production several times, and the horizontal well drilling technique The techniques include drilling measurement technology, borehole trajectory control technology, wellbore stability technology and drilling and completion fluid technology. The smaller the curvature radius of the horizontal well section is, the more difficult the construction is. The design and research of the reservoir department, the horizontal well and the horizontal well drilling technology are carried out through the analysis of the geological condition of the Du 84 block in Liaohe Oilfield. Research on technology and instrumental instruments, research on sand control technology for heavy oil thermal recovery, drilling fluid completion fluid technology research and short radius sidetracking horizontal well technology research. In Du 84 block, horizontal wells are deployed, 19 side drilled horizontal wells are drilled, 9 horizontal wells are completed, and lateral drilled horizontal wells are tracked by geological trajectory. The improved screw drilling tool can improve the slanting ability of 10%~2 0%, to meet the needs of trajectory control, the control precision of well trajectory can reach about 1m. Under the premise of ensuring the safety of construction and not polluting the oil layer, a set of mud system is used to complete the construction of the inclined well section and horizontal well section. The compilation of computer software, as well as the improvement of the supporting tools and instruments, complete the horizontal well, the lateral drilling horizontal well of 9, the oil layer drilling rate is above 87%. The horizontal well matching technology can open up the domestic and foreign market of Liaohe Oilfield, and provide the powerful technical support for increasing the economic growth point.
【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

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