摘要
渤中34-9油田东营组火成岩地层平均机械钻速较低,对钻井作业时效影响较大,为此进行了火成岩地层岩石力学特性研究。基于现场测井资料计算出的岩石力学数据,运用数理统计学方法建立了研究区火成岩地层抗钻特性与测井声波时差间的关系模型,并利用模型对火成岩地层抗钻特性进行分析评价。研究结果表明,综合运用测井资料及岩石数据建立地层抗钻特性参数剖面,能较好地反映该区火成岩的真实情况,岩石可钻性、抗压强度和抗剪强度的预测精度可达90%左右,在此基础上优选的钻头及钻具组合应用数十口井,火成岩地层机械钻速平均提高20%左右,有效提高了研究区块的提速提效水平。
The igneous rock of the Dongying Formation in the Bozhong 34-9 oilfield is found with a low average penetration rate and the drilling time-efficiency is severely impacted.Given this,this research investigated the rock mechanical properties of igneous rock.The rock mechanical properties of the igneous rock interval were calculated using the well logging data.The correlation between the anti-drilling property and interval transit time of sonic logging of the igneous rock in the study area was modeled in a mathematical-statistical approach,for evaluating the anti-drilling characteristics.Our research shows that the formation profile of antidrilling characteristic parameters,based on well logging and rock properties,can truly represent the igneous rock in the study area.The prediction accuracy of the rock drillability,compressive strength,and shear strength reaches about 90%.Based on the above analysis,the bit and bottomhole assembly were optimized and then applied in several ten wells,which were found to increase the average penetration rate of the igneous rock by about 20%.The drilling rate and efficiency of the study area are effectively improved.
作者
彭超
邓津辉
谭忠健
秦艳艳
袁亚东
姚强
PENG Chao;DENG Jinhui;TAN Zhongjan;QIN Yanyan;YUAN Yadong;YAO Qiang(CNOOC EnerTech-Drilling&Production Company,Tianjin 300452,China;Tianjin Branch of CNOOC Limited,Tianjin 300459,China;COSL Well Tech Division Tanggu Operation Company,Tianjin 300459,China)
出处
《石油钻采工艺》
CAS
北大核心
2022年第2期186-190,共5页
Oil Drilling & Production Technology
基金
中海石油(中国)有限公司天津分公司科研项目“渤海典型区块第三系裂缝预测技术及在钻井工程中的应用”(编号:CCL2020TJX0NST1300)。
关键词
渤中34-9油田
火成岩地层
岩石力学
抗钻特性
测井资料
预测模型
Bozhong 34-9 oilfield
igneous rock stratum
rock mechanics
anti-drilling property
well logging
prediction model
