一种硬地层高效破岩技术应用分析  

Application Analysis of A High Efficient Rock Breaking Technology in Hard Formation

作　　者：尹慧博[1] YIN Hui-bo(Sinopec Research Institute of Petroleum Engineering,Beijing 100101,China)

机构地区：[1]中国石油化工股份有限公司石油工程技术研究院,北京100101

出　　处：《科技和产业》2020年第10期219-222,共4页Science Technology and Industry

基　　金：国家重大专项项目(2016ZX05021-003)。

摘　　要：沙特阿美ATN区块三开直井段钻遇层段为Jilh、Sudair和Khuff,对应井深在3040~4150 m,以白云岩、灰岩及碳酸盐为主,地层坚硬、研磨性强。上部层段页岩不稳定,掉块较严重,造成泥浆比重增大,使得钻进更加困难。使用常规的钻井方法机械钻速低,采用螺杆等井下动力钻具没有效果。现场试验证明,Φ228液动射流冲击器可有效解决硬地层机械钻速慢的难题,针对上述地层岩石抗压强度进行了量化分析,依据液动射流冲击器性能参数与岩石抗钻特性参数关系,结合应用井设计,制定了Φ228液动射流冲击器旋冲钻井提速方案,优选出旋冲钻井参数。在此基础上进一步优化了钻具组合及匹配钻头,并对匹配钻头的抗冲击能力和攻击性进行了分析。在ATN-1123井进行了现场提速应用。应用结果表明,Φ228液动射流冲击器提速效果显著,较邻井平均机械钻速同比提高47%。此次成功应用,为该区块硬地层钻井提速提供了有效技术手段。Jilh,sudair and Khuff are encountered in the third spud in section of ATN block in Saudi Aramco.The corresponding well depth is 3040-4150 m,dominated by dolomite,limestone and carbonate.The formation is hard and abrasive.The shale in the upper section is unstable and the falling block is serious,resulting in the increase of mud weight,which makes drilling more difficult.There is no effect by using down hole power drilling tools such as mortor.Field test shows that theΦ228 Hydra-efflux hammer can effectively solve the low ROP problem in hard formation machinery.Based on the quantitative analysis of the rock compressive strength of the above formation,according to the relationship between the performance parameters of the hydraulic jet impactor and the rock drilling resistance parameters,combined with the application well design,the scheme of speed-up of rotary percussion drilling with theΦ228 Hydra-efflux hammer is formulated,and the rotary percussion drilling parameters are optimized.On this basis,the BHA and matching bit are further optimized,and the impact resistance and aggressiveness of matching bit are analyzed.It has been applied in ATN-1123 well.The application results show that the ROP increase effectively by usingΦ228 Hydra-efflux hammer,which is 47%higher than the average ROP of adjacent wells.This successful application provides an effective technical means for increasing ROP drilling in the hard formation of the block.

关 键 词：液动射流冲击器 硬地层 冲击功 旋冲钻井 提速 

分 类 号：TE-9[石油与天然气工程]