DPI-03型钻井液缓蚀剂的研制  

A STUDY ON CORROSION INHIBITOR DPI-03 FOR DRILLING FLUIDS

作　　者：赵福祥[1] 范荣增[1] 范旭波 吴浩[1] 

机构地区：[1]华北石油管理局钻井工艺研究所油田化学室

出　　处：《油田化学》1996年第1期37-39,共3页Oilfield Chemistry

摘　　要：针对华北油田钻井过程中钻具腐蚀严重的状况，研制出DPI-03型（原型号为DFI-03）钻井液缓蚀剂并对其缓蚀效果和与钻井液的配伍性进行了评价。在CO_2气压力为1MPa时，该剂100℃时的缓蚀率达90％，120℃时的缓蚀率在80％以上。该剂对钻井液的性能无不良影响。DPI-03, being a mixture of an imidazoline derivative synthesized from an oil and a polyamine. an organic quaternary ammonium compound, an organic surfur compound, and an oxygen scavenger, is manufactured commercially at present. It was named DFI-03 previously. DPI-03 in concentrations 500-1000 ppm reduces the corrosion rate of steel No 45 in low-solid polymer drilling fluids under CO_2 pressure of 1. 0 MPa by>90% at 100℃ and by >80% at 120℃. DPI-03 in concentrations up to 2000-2500 ppm has no negative effects on the properties of the drilling fluids, before and after rolling at 120℃ over 8 hrs. In this paper the severe problems of drill pipe failure caused by corrosion Huabei and other Oil Fields are discussed.

关 键 词：缓蚀剂 钻井液 添加剂 钻具腐蚀 油田 

分 类 号：TE254.4[石油与天然气工程—油气井工程]