试油测试管柱中重晶石影响因素分析  

Analysis of the influencing factors of barite in the well testing string

作　　者：庞振力 杜卫刚 曹智 刘勇[1] 宋国强 陈雪茹 PANG Zhenli;DU Weigang;CAO Zhi;LIU Yong;SONG Guoqiang;CHEN Xueru(Oil-Gas Technology Branch of CNPC Offshore Engineering Co.,Ltd.,Tianjin 300451,China;CNPC XiBu Drilling Engineering Company Limited,Well Testing Company,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油集团海洋工程有限公司油气技术分公司,天津300451 [2]中国石油集团西部钻探工程有限公司试油公司,新疆克拉玛依834000

出　　处：《油气井测试》2025年第1期7-14,共8页Well Testing

基　　金：中石油海洋公司科技研发项目“滩浅海油气开发工程关键技术研究”(202302-0201)。

摘　　要：在试油测试作业中,重晶石的沉降会导致下入测试管柱遇阻、开关井操作及压井困难等问题。基于实验与仿真模拟分别进行了静态与动态循环高密度试油工作液中的重晶石沉降规律研究。实验结果表明,相同条件下200目重晶石静态1 h沉降量是2 m/s流速下的111.9倍;黏度、流速与管径的增大对重晶石沉降起抑制作用;粒径、密度的增大对重晶石沉降起促进作用。建立的静动态条件下重晶石密度预测模型,最大误差7.7%,可以满足高温高压超深井试油测试作业中试油工作液稳定性测试的需求,为现场作业提供一定的技术支持。In well testing operations,the settlement of barite can lead to problems such as resistance when running in the testing string,difficulties in well opening and closing operations,and well killing.Based on experiments and simulation,the settlement laws of barite in high-density well testing working fluids under static and dynamic circulation conditions were studied respectively.The experimental results show that under the same conditions,the static settlement of 200-mesh barite in 1 hour is 111.9 times that at a flow rate of 2 m/s.The increase of viscosity,flow rate,and pipe diameter inhibits the settlement of barite,while the increase of particle size and density promotes the settlement of barite.The established density prediction model of barite under static and dynamic conditions has a maximum error of 7.7%,which can meet the needs of the stability test of well testing working fluids in well testing operations of high-temperature,high-pressure,and ultra-deep wells,providing certain technical support for on-site operations.

关 键 词：试油测试 试油工作液 重晶石 粒径 沉降稳定性 预测模型 仿真模拟 

分 类 号：TE27[石油与天然气工程—油气井工程]