APR测试工具在高温及高压差作业条件下的改进与应用  

Improvement and application of APR testing tool under high temperature and high pressure differential conditions

作　　者：程青松[1] 周进[1] 胡开银 吴镇江[1] 高颂 CHENG Qingsong;ZHOU Jin;HU Kaiyin;WU Zhenjiang;GAO Song(PetroChina Tarim Oilfield Company,Korla,Xinjiang 841000,China)

机构地区：[1]中国石油塔里木油田公司,新疆库尔勒841000

出　　处：《油气井测试》2023年第2期13-18,共6页Well Testing

基　　金：中国石油天然气股份有限公司重大专项“塔里木盆地大油气田增储上产关键技术研究与应用”(2018E-1809)。

摘　　要：在塔里木油田测试作业中,出现诸如封隔器胶筒高温碳化失封、“O”密封圈气爆破损渗漏、高压差失封等问题,无法安全优质地完成超深超高压高温气井的测试需要。为提升井下测试工具耐温耐压性能,基于塔里木油田“十三五”以来超深高温高压井APR测试实践,总结分析了常规高温高压井测试APR测试工具存在的问题,通过提升密封部件材料的耐温等级、优化密封组合形式、改进封隔器胶筒结构等手段,将APR测试工具的耐温耐压差性能由70 MPa/177℃提升至105 MPa/204℃。经室内高温高压评价实验,封隔器设计等级、耐温耐压等关键指标满足设计要求。现场DB×井使用改进型193.675 mm CHAMP-Ⅳ封隔器、MJ×井使用改进型127 mm RTTS封隔器,作业期间井下工具工作正常,测试均取得成功,起出检查测试工具完好。改进的APR测试工具为超深高温高压井高质量勘探开发打下了坚实的基础。In the Tarim Oilfield,some problems such as carbonization-induced failure of rubber packer,gas explosion and leakage of O-ring,and failed sealing due to high pressure differential occur in the testing,making safe and effective operations impossible in ultra-deep,ultra-high pressure and high temperature gas wells.In order to improve the temperature and pressure resistance of downhole testing tools,based on the practical APR testing of ultra-deep,high temperature and high pressure wells in the Tarim Oilfield during the Thirteenth Five-Year Plan period,this paper summarizes and analyzes the problems existing in conventional APR testing tools for high temperature and high pressure wells.By improving the temperature resistance level of sealing part materials,optimizing the sealing combination form,and upgrading the structure of the rubber packer,the temperature and pressure differential resistance performance of APR testing tools have been improved from 70 MPa/177℃to 105 MPa/204℃.Laboratory high-temperature and high-pressure evaluation experiments confirm that the key indicators such as the designed level,temperature resistance and pressure resistance of the packer meet the design requirements.Field applications of the improved 193.675 mm CHAMP-IV packer and 127 mm RTTS packer in Wells DB×and MJ×respectively showed that the downhole testing tools worked normally during the operations,the retrieved testing tools were intact,and all the tests were successful.The improved APR testing tools have laid a solid foundation for high-quality exploration and development of ultra-deep,high temperature and high pressure wells.

关 键 词：超深高温高压井 APR测试工具 封隔器胶筒 水力锚 材质优选 耐温耐压 评价实验 现场应用 

分 类 号：TE353[石油与天然气工程—油气田开发工程]