新型高效抗磨减阻剂在东海油气田的应用

Application of a New Highly Efficient Anti-wear Friction Reducer in Donghai Oil and Gas Field

近年来,东海油气田大位移井、大斜度井和水平分支井钻井作业越来越多,钻进过程中的高扭矩、钻杆和套管的磨损已经严重地影响了作业的安全和效率。在这些高难度井中引入了一种新型高效抗磨减阻剂ARDR LUBE-100。ARDR LUBE-100属于有机负离子和有机金属化合物类产品,其主要是以醇、脂等抗磨材料在高温下,通过酯化合成及缩合反应得到的产物,在中间体合成过程中产生了有机金属离子及添加了抗磨惰性离子,通过有机负离子吸附在套管及钻杆表面,可以在管体表面形成滚动摩擦,起到了很好的抗磨减阻作用。室内评价和现场应用表明,该抗磨减阻剂与钻井液配伍性良好,在钻井液中加入1%左右即可将钻井液的润滑系数降低60%,钻具与套管之间的磨损速率降低99.64%以上,抗磨减阻效果明显。

In Donghai Oil and Gas Field,more and more extended reach wells,high angle deviated wells and multilateral horizontal wells have been drilled in recent years.During the drilling operations,high torque and wear-and-tear experienced by the drill pipes and the casing strings have impacted on the safety and the efficiency of the drilling operations.A highly efficient anti-wear friction reducer,ARDR LUBE-100was found,after extensive investigation and experiments,to be effective in dealing with the problems aforementioned.ARDR LUBE-100is a compound of organic anions and organic metals,and is a product of anti-wear materials such as alcohols and esters through esterification reaction or condensation reaction at high temperatures.Organic metal ions are generated in intermediate synthesis reaction,and anti-wear inert ions are added into the reactants.ARDR LUBE-100can be adsorbed onto the surface of a pipe,where rolling friction takes place between the ARDR LUBE-100particles and the surface of the pipe,thereby effectively reducing wear-and-tear and friction.Laboratory evaluation and field application proved that the ARDR LUBE-100has good compatibility with drilling fluids,and1%of ARDR LUBE-100in drilling fluid has reduced the coefficient of friction by60%,and rate of wear between drill pipe and casing string reduced by99.64%,indicating that the use of ARDR LUBE-100can remarkably wear-and-tear and friction.