定向分簇射孔对套管外光纤的影响  

Effect of Directional Cluster Perforation on the Outer Casing Fiber Optic

作　　者：孙宪宏 魏玉阳 赵新宇 谢超 王萌禾 乔晓光 严星 SUN Xianhong;WEI Yuyang;ZHAO Xinyu;XIE Chao;WANG Menghe;QIAO Xiaoguang;YAN Xing(Tong Petrotech Corp.,Xi'an,Shaanxi 710075,China;School of Mechanical Science and Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318,China)

机构地区：[1]通源石油科技集团股份有限公司,陕西西安710075 [2]东北石油大学机械科学与工程学院,黑龙江大庆163318

出　　处：《测井技术》2025年第1期130-138,共9页Well Logging Technology

基　　金：国家自然科学基金项目“非均质强塑性陆相页岩油储层水力复杂裂缝扩展机理研究”(52274036);国家自然科学基金项目“陆相页岩油储层复杂裂缝控近扩远机制研究”(52404027)。

摘　　要：为探究定向射孔作业对套管外光纤的影响,降低光纤的损伤率,保障定向分簇射孔作业的成功率,利用Abaqus数值模拟软件进行了三维仿真模拟。构建了射孔弹-射孔枪-套管数值模型,分析了分簇射孔后套管外壁应力变化规律。结合地面打靶和现场试验,通过对不同规格射孔弹、射孔方向与光纤夹角等影响因素的分析,评估金属射流和冲击波对套管外壁光纤的影响。通过数值模拟和现场试验,确定了尺寸(外径×壁厚)为139.70 mm×12.70 mm、139.70 mm×7.72 mm、114.30 mm×8.56 mm、114.30 mm×6.88 mm的套管的安全区和避射区的角度范围,减少了射孔过程中光纤的损伤风险。研究表明,特定角度布置光纤可显著降低损伤概率,现场试验结果与模拟结果高度一致,验证了模数值拟结果的准确性。该研究为射孔作业安全布置光纤提供理论指导,对保障套管外置光纤的完整性、安全性具有重要意义。To investigate the effect of directional clustered perforation operations on the outer casing fiber optic,reduce the fiber optic damage rate and ensure the success rate of directional cluster perforation operations,a three-dimensional simulation is conducted using Abaqus numerical simulation software.A numerical model of the perforation charge,perforation gun,and casing is established to analyze the stress variation on the outer casing wall after cluster perforation.Combined with surface target shooting and field tests,the impact of different perforation charge specifications,perforation direction,and the angle between the perforation and fiber optic on the casing wall is studied to assess the effects of metal jets and shock waves on the outer casing fiber optic.Through numerical simulations and field tests,the safe zone and no-shooting zone angle ranges for casings with dimensions of 139.70 mm×12.70 mm,139.70 mm×7.72 mm,114.30 mm×8.56 mm and 114.30 mm×6.88 mm are determined,reducing the risk of fiber optic damage during the perforation process.The study shows that positioning the fiber optic at specific angles can significantly reduce the damage probability.The field test results are highly consistent with the simulation,verifying the accuracy of the numerical simulation results.The research provides theoretical guidance for the safe deployment of fiber optics during perforation operations and is of significant importance for ensuring the integrity and safety of the outer casing fiber optic.

关 键 词：射孔 套管 ABAQUS软件 数值模拟 现场试验 光纤损伤 

分 类 号：P631.84[天文地球—地质矿产勘探]