七段式三维水平井井眼轨道设计方法  

Design of seven-section 3D horizontal well trajectory

作　　者：赵廷峰[1] 叶雨晨 席传明 吴继伟[1] 史玉才[2] ZHAO Tingfeng;YE Yuchen;XI Chuanming;WU Jiwei;SHI Yucai(PetroChina Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China;School of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中国石油新疆油田分公司 [2]中国石油大学(华东)石油工程学院

出　　处：《石油钻采工艺》2023年第1期25-30,共6页Oil Drilling & Production Technology

基　　金：中国石油集团重大专项课题“陆相中高成熟度页岩油勘探开发关键技术研究与应用”(编号:2019E-2605);国家科技重大专项“旋转导向钻井系统研制”(编号:2016ZX05022-002);山东省重点研发计划“旋转导向钻井系统产业化的瓶颈技术研究”(编号:2019GHZ001)。

摘　　要：国内页岩油气储层埋深较大,传统的五段式三维水平井轨道难以满足优快钻井需求。鉴于此,提出了“垂直段−增斜段−稳斜段−扭方位段−稳斜段−增斜段−水平段”七段式三维水平井轨道,给出了与之对应的基本方程组(三元非线性方程组),将上述七段式三维轨道拆分至2个铅垂面和1个斜平面上,建立了与之等效的3个二元非线性方程组,降低了求解难度。实例分析表明,储层埋深较大的丛式三维水平井采用七段式轨道能够显著缩短三维扭方位段长,有助于降低井眼轨迹控制难度并提高钻井速度。该研究成果能够为丛式三维水平井轨道设计提供技术支持。The shale oil and gas reservoirs in China are deeply buried,where an optimal and fast drilling cannot be realized by following the traditional five-section three-dimensional(3D)horizontal well trajectory.In this regard,a seven-section(i.e.vertical section,build section,hold section,direction turning section,hold section,build section and horizontal section)3D horizontal well trajectory was proposed,together with the corresponding basic equations(ternary nonlinear equations).The seven-section 3D horizontal well trajectory was split into two vertical planes and one inclined plane,and then three equivalent binary nonlinear equations that are more simple to solve were developed.The case study shows that the application of this seven-section trajectory to 3D cluster horizontal wells in deep reservoirs can greatly reduce the length of the 3D direction turning section,which is conducive to ensure the well trajectory control and improve the drilling speed.The findings of this research provide technical support for the design of 3D cluster horizontal well trajectory.

关 键 词：三维水平井 井眼轨道设计 数学模型 求解方法 摩阻扭矩 

分 类 号：TE243[石油与天然气工程—油气井工程]