?228.6mm射流冲击器研制及硬地层提速试验  

The Development of ?228.6 mm Hydro-Efflux Hammer and ROP Increase Test in Hard Formations

作　　者：索忠伟[1] SUO Zhongwei(Sinopec Research Institute of Petroleum Engineering,Beijing,100101,China)

机构地区：[1]中国石化石油工程技术研究院

出　　处：《石油钻探技术》2019年第4期54-58,共5页Petroleum Drilling Techniques

基　　金：国家科技重大专项“复杂地层钻井提速提效关键工具与装备”（编号：2016ZX05021-003）资助

摘　　要：涪陵页岩气田二开?311.1mm直井段钻遇的龙潭组、茅口组地层坚硬,可钻性差,钻头使用寿命短,机械钻速低。为了提高该井段机械钻速,研制了?228.6mm射流冲击器,并进行了台架试验,结果显示,该射流冲击器性能参数可调范围大,当行程、冲锤质量和排量变化而其他条件不变时,冲击力、单次冲击功、冲击频率随之呈近线性变化。在台架试验的基础上,优选了?228.6mm射流冲击器的结构及性能参数,优化了钻具组合及旋冲钻井参数,并在焦页109–1HF井硬地层进行了现场试验。现场试验结果表明,?228.6mm射流冲击器提速效果显著,较邻井二开平均机械钻速提高104.9%。?228.6mm射流冲击器的成功研制,为涪陵页岩气田二开直井段硬地层钻井提速提供了有效的技术手段。The Longtan-Maokou Formations in the?311.1 mm vertical section of Fuling Shale Gas Field are characterized by high hardness and poor drillability,resulting in short service life of drill bit,and low ROP.In order to improve the ROP in this interval,a?228.6 mm hydro-efflux hammer was developed,and the bench test was conducted.The results of bench test showed that the performance parameters of?228.6 mm hydro-efflux hammer were adjustable in a wide range.While stroke,hammer mass and flowrate were variable,and other conditions remained unchanged,the impact force,single impact work and impact frequency exhibited a nearly linear change correspondingly.On the basis of bench tests,the structure and performance parameters of?228.6 mm hydro-efflux hammer were properly selected,BHA and rotary percussion drilling parameters were optimized,and a field test was carried out in Well Jiaoye 109-1HF.The results of field test suggested that the?228.6 mm hydro-efflux hammer had a significant drilling speed-up effect,which was 104.9%higher than the average ROP in the second interval of the adjacent wells.The successful development of?228.6 mm hydro-efflux hammer could provide an effective solution for drilling speed-up in the hard formation of the second vertical section in Fuling Shale Gas Field.

关 键 词：射流冲击器 硬地层 冲击功 冲击频率 旋冲钻井 钻井提速 

分 类 号：TE242[石油与天然气工程—油气井工程] TE921.2