苏里格气田长水平段水平井钻井技术研究

发布时间：2018-04-16 12:33

本文选题：苏里格气田 + 水平井　；参考：《东北石油大学》2015年硕士论文

【摘要】：苏里格气田区域构造位于鄂尔多斯盆地陕北斜坡西北部,地质条件复杂,勘探开发难度大、成本高,气层具有低渗、低压、单井产能低、压力下降快、稳产时间短的特征。为进一步提高水平井钻井的技术水平,实现苏里格气田长水平段水平井钻井提速增效、降低成本,避免事故复杂的发生。本文主要针对长水平段水平井钻井技术问题,根据现场实验数据进行理论分析,以下技术进行了研究:1、通过以往水平井钻头使用分析和总结,优选出单只钻头进尺多、机械钻速高的钻头,并经过个性化改进,提高钻头使用效率;2、通过采用新型KCL钻井液体系,并强化封堵措施,解决井壁稳定问题;3、通过控制流变参数,使用流型调节剂和泥饼质量改善剂,解决井眼清洁问题;4、应用“润滑防卡”特色技术,并通过进一步强化泥饼质量、优化RHZY和TZLQ等措施,解决润滑防卡和防托压问题;5、控制好井眼轨迹,保持井眼圆滑、狗腿度小,保证长水平段施工中托压、上提拉力和旋转扭矩小,起下钻顺畅。最终,本研究初步形成了一套长水平段水平井钻井配套工艺技术,对今后苏里格气田长水平段水平井的钻进有一定的指导作用。
[Abstract]:The regional structure of Sulige gas field is located in the northwest of North Shaanxi slope in Ordos Basin. The geological conditions are complicated, the exploration and development is difficult, the cost is high, the gas reservoir has the characteristics of low permeability, low pressure, low productivity of single well, rapid pressure drop and short time of stable production.In order to further improve the technical level of horizontal well drilling, increase the speed and increase the efficiency of the horizontal well drilling in Sulige gas field, reduce the cost and avoid the occurrence of complex accidents.In this paper, aiming at the technical problems of horizontal well drilling in long horizontal section, according to the theoretical analysis of field experiment data, the following techniques have been studied: 1. Through the analysis and summary of the use of drill bits in horizontal wells in the past, the single bit is selected to advance more.The bit with high drilling speed is improved by individuation to improve the efficiency of drilling bit. By adopting a new type of KCL drilling fluid system and strengthening the plugging measures, the problem of wellbore stability is solved and the rheological parameters are controlled.The flow pattern regulator and mud cake quality improver are used to solve the wellbore cleaning problem and the characteristic technology of "lubricating and blocking prevention" is applied. Through further strengthening the mud cake quality and optimizing the measures such as RHZY and TZLQ, etc.To solve the problems of lubricating anti-blocking and anti-holding pressure, control the well trajectory, keep the hole smooth, the dog leg is small, ensure the support pressure in the construction of long horizontal section, the lifting force and the rotation torque are small, and the drilling-down is smooth.Finally, a set of matching technology for horizontal well drilling in long horizontal section of Sulige gas field has been preliminarily formed, which will be helpful to the drilling of long horizontal well in Sulige gas field in the future.
【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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