Application of Drag and Torque Analysis in the Design of Horizontal Wells

Abstract

Abstract: The influence of drag and torque on horizontal well drilling is very great, which determines whether tripping and drilling can be performed normally. Therefore, the drag and torque analysis in advance in the design of a horizontal well plays a positive role in the successful drilling operations. This article introduces main research contents involved in drag and torque analysis. The effects of drag and torque on buckling, Von Mises stress, side force and torque of drilling tool are checked in this paper. That means that no buckling occurs during sliding drilling if the safety factor for Von Mises check is above 1 . 67, that is, less than 60% of the yield limit, the side force must be within the allowable range, that is, less than 1 000 N /m, and the torque must be less than 90% of the maximum torque limit of drill pipe recommended by IADC. The article uses actual cases to illustrate the specific methods and steps for the drilling tool buckling check, Von Mises stress check, side force check and torque check during slide drilling and rotary drilling with PDM in the curve section, and rotary steerable drilling in horizontal section during the drag and torque analysis. Additionally, how to calculate the maximum well depth that the PDM drilling assembly can accomplish slide drilling is also stated. Through the analysis of actual drilling effect of cases, it is considered that the drag and torque analysis is an indispensable tool for the feasibility demonstration of the drilling assembly of horizontal well in the drilling design stage, and is the basic guarantee of safe, high-quality and efficient drilling. It can provide references significance for domestic drilling design departments and directional well technical service companies in horizontal well design.

Key words: drag, torque, horizontal well, buckling, Von Mises stress, side force, check

摘要： 摩阻与扭矩对水平井钻井施工的影响非常大，决定了起下钻及钻进施工能否正常进行，因此，在钻井设计中提前进行摩阻与扭矩分析，对成功完成钻井作业具有积极作用。文章就摩阻与扭矩对钻具屈曲、当量米塞斯应力、侧向载荷和扭矩等进行了校核，即在滑动钻进时不发生屈曲：当量米塞斯应力校核的安全系数需要在1.67以上、低于屈服极限的60％；侧向载荷必须低于1 000 N /m；扭矩必须低于 IADC 推荐钻杆最大扭矩的 90%。文章通过实例阐述了摩阻扭矩分析在造斜段螺杆钻具组合滑动钻进、复合钻进及水平段旋转导向钻进时的钻具屈曲校核、当量米塞斯应力校核、侧向载荷校核和扭矩校核的具体作法和步骤，以及滑动钻进的极限井深。通过实例井实钻效果分析，认为摩阻扭矩分析是钻井设计阶段水平井钻具组合可行性论证的不可或缺的重要步骤，是安全、优质、高效钻井的基本保证，可以为国内钻井设计部门和定向井技术服务公司在水平井设计中提供参考和借鉴。

关键词: 摩阻, 扭矩, 水平井, 屈曲, 当量米塞斯应力, 侧向载荷, 校核

WANG Zhirui. Application of Drag and Torque Analysis in the Design of Horizontal Wells[J]. Drilling & Production Technology, 2022, 45(6): 7-13.

王植锐. 摩阻与扭矩分析在水平井钻井设计中的运用[J]. 钻采工艺, 2022, 45(6): 7-13.

References

[1]王俊良, 陈洪亮, 刘永峰. 大位移井钻具组合设计及摩阻扭矩分析[ J] . 钻采工艺,2012,35(1) :24-26.
WANG Junliang, CHEN Hongliang, LIU Yongfeng. ERD BHA and its drag and torque analysis technology [ J] . Drilling & Production Technology,2012,35(1) :24-26.
[2] 王俊良, 杨继明, 张新平, 等. 中国南海流花油田套管开窗侧钻大位移井钻井技术[ J] . 钻采工艺, 2010, 33(3) :7-11 .
WANG Junliang, YANG Jiming, ZHANG Xinping, et al. ERD technology by casing sidetrack in Liu Hua Oilfield of South China Sea[ J] . Drilling & Production Technology,2010,33(3) :7-11 .
[3] LESAGE M, FALCONER I G, WICK C J. Evaluating drilling practice in deviated wells with torque and weight data [J] . SPE Drilling Engineering,1988,3(3) :248-252.
[4] JOHANCSIK C A, FRIESEN D B, DAWSON R. Torque and drag in directional wellsprediction and measurement [J ] . Journal of Petroleum Technology, 1984, 36 (6) :987-992.
[5] HEGDE C, WALLACE S, GRAY K. Real time prediction and classification of torque and drag during drilling using statistical learning methods [C] //SPE Eastern Regional Meeting,October 13- 15,2015, Morgantown, West Virginia,USA. Richardson,Texas,USA:OnePetro,2015.
[6] ADEWUYA O A, PHAM S V. A robust torque and drag analysis approach for well planning and drillstring design[ C] //IADC /SPE Drilling Conference, March 3-6, 1998,Dallas, Texas. Richardson, Texas, USA:OnePetro,1998.
[7]ROY CHOUDHURI B, RAMAGOPAL B. Torque and drag software analysis for deciding well construction and remedial action[ C] //SPE Indian Oil and Gas Technical Conference and Exhibition, March 4-6, 2008, Mumbai, India.Richardson, Texas, USA:OnePetro,2008.
[8] SHAHRI M, WILSON T, THETFORD T, et al. Implementation of a fully automated real-time torque and drag model for improving drilling performance: case study[ C] //SPE Annual Technical Conference and Exhibition, September 24-26, 2018, Dallas, Texas, USA. Richardson, Texas,
USA:OnePetro,2018.
[9] WU J, JUVKAM-WOLD H C. Buckling and lockup of tubulars in inclined wellbores [ J] . Journal of Energy Resources Technology,1995,117(3) :208-213.
[10] AADNOY B S, DJURHUUS J. Theory and application of a new generalized model for torque and drag[ C] //IADC / SPE Asia Pacific Drilling Technology Conference and Exhibition, August 25 27, 2008, Jakarta, Indonesia. Richardson, Texas, USA:OnePetro,2008.
[11] CHEN Yuche, LIN Y H, CHEATHAM J B. Tubing and casing buckling in horizontal wells[ J] . Journal of Petroleum Technology,1990,42(2) :140-191 .
[12] PAYNE M L, ABBASSIAN F. Advanced torque and drag considerations in extended-reach wells [C] //IADC /SPE Drilling Conference, March 12-15, 1996, New Orleans,Louisiana. Richardson, Texas, USA:OnePetro,1996.
[13] 王俊良,吴先忠, 杨金利, 等. 高压含硫产层水平井旋转地质导向钻井技术实践[ J] . 钻采工艺,2008,31(4) :4-8.
WANG Junliang, WU Xianzhong, YANG Jinli, et al. Application of PD X5 in the pay zone with high pressure gradient in Moxi gas field[ J] . Drilling & Production Technology,2008,31(4) :4-8.
[14] 王俊良, 王植锐, 胡建华, 等. 垂直钻井系统 PowerV技术首次在川西高陡构造 X01 井的应用效果[ J] . 天然气工业,2016,36(12) :87-91 .
WANG Junliang, WANG Zhirui, HU Jianhua, et al. Application of the PowerV vertical drilling system to Well X01 in high dip structures of the western Sichuan Basin[ J] .Natural Gas Industry,2016,36(12) :87-91 .

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