机械式旋冲工具对水平井送钻摩阻的影响规律  

Influence of Mechanical Rotary Percussion Tool on Bit Feed Friction of Horizontal Well

作　　者：闫炎 韩礼红 宋志龙 刘永红[3] 杨尚谕 王建军 Yan Yan;Han Lihong;Song Zhilong;Liu Yonghong;Yang Shangyu;Wang Jianjun(Tubular Goods Research Institute of CNPC;China Petroleum&Petrochemical Equipment Industry Association;College of Mechanical and Electrical Engineering,China University of Petroleum(East China))

机构地区：[1]中国石油集团工程材料研究院有限公司 [2]中国石油和石油化工装备工业协会 [3]中国石油大学(华东)机电工程学院

出　　处：《石油机械》2023年第4期39-45,共7页China Petroleum Machinery

基　　金：中国石油天然气集团有限公司科学研究与技术开发项目“油气井套损评价与修复关键技术研究”(2021DJ2705)、“井筒完整性关键理论与控制技术”(2021DJ4403)。

摘　　要：托压问题是制约水平井滑动钻进机械钻速的主要因素之一,使用振动减阻工具是水平井减阻最直接有效的方式。为分析振动减阻工具在水平井中的减阻效果,针对一种螺杆驱动的机械式旋转冲击钻井工具,对工具在不同钻进工况下的钻压波动、位移变化进行了模拟计算,解释了低频冲击工具可以实现振动减阻的根本原因。计算结果表明:旋冲工具降低摩阻需要借助钻压;激励频率越大,钻头处的钻压波动越剧烈;存在最佳的激励频率使得钻头处钻压整体处于最高水平;旋冲工具工作时,钻头处的钻压波动不仅包含激励本身的频率,还会包含激励频率的2倍、3倍等更高倍数的频率。研究结果可以为旋冲工具工作参数的优化,以及工具在水平井中实现最佳提速效果提供理论指导。Weight-on-bit(WOB)congestion is one of the main factors restricting the penetration rate of sliding drilling in horizontal wells, and the use of vibration friction reduction tools is the most direct and effective way to reduce friction in horizontal wells.In order to analyze the friction reduction effect of vibration friction reduction tool in horizontal wells, the WOB fluctuation and displacement variation of a mechanical rotary percussion drilling tool driven by positive displacement motor(PDM)under different drilling conditions was calculated by simulation, and the reason that low frequency percussion tool can achieve vibration friction reduction was explained.The calculation results show that the rotary percussion tool needs to use WOB to reduce the friction;the greater the excitation frequency, the more severe the WOB fluctuation is;and there is an optimal excitation frequency to make the WOB at the highest level as a whole;moreover, when the rotary percussion tool works, the WOB fluctuation not only includes the frequency of the excitation itself, but also includes the frequency of 2 times and 3 times of the excitation frequency.The research results provide theoretical guidance for the optimization of working parameters of the rotary percussion tool and the realization of optimal penetration rate enhancement of the tool in horizontal wells.

关 键 词：水平井 机械式旋冲工具 摩阻 旋转冲击 冲击频率 钻压波动 

分 类 号：TE921[石油与天然气工程—石油机械设备]