摘要
高速含砂流体的冲蚀作用造成的防砂管基管破坏是防砂失效的重要原因之一。利用旋转MSH冲蚀仪模拟地层环境,以含砂流体为实验介质,从筛管基管上裁剪出50mm×20mm×2mm的样块作为实验试样,研究其在固液两相流体中不同冲蚀速度与角度下的冲蚀规律。实验发现:相同实验条件下,冲蚀磨损量与冲蚀角度成反比、与冲蚀速度成正比且成指数增长。因此可以调整设计筛管结构以增大含砂流体与筛管基管的冲蚀角度,同时在油田开发前期降低生产速度,减小冲蚀磨损,后期增大生产速度,保证总体产量。
One of the important reasons for the failure of sand control is the damage of sand control pipe base caused by erosion of high-speed sand-bearing fluid.In this experiment,a rotating MSH erosor was used to simulate the stratum environment,and a 50 mm*20 mm*2 mm sample was cut from the sieve tube base pipe with sand-bearing fluid as the experimental medium.The erosive law of the50 mm*20 mm*2 mm sample in the solid-liquid two-phase fluid at different erosion rates and angles was studied.It is found that under the same experimental conditions,the erosion wear amount is inversely proportional to the erosion angle,and is proportional to the erosion speed and increases exponentially.Therefore,the structure of screen tube can be adjusted to increase the erosion angle between sandbearing fluid and screen tube base pipe.At the same time,in the early stage of oilfield development,production speed can be reduced,erosion wear can be reduced,and production speed can be increased in the later stage to ensure overall production.
引文
[1]刘新峰,张海龙,李效波,等.海上稠油热采筛管冲蚀影响因素[J].石油钻采工艺,2012,34(5):73-75.
[2]刘宗思,韩兵奇,张坤.油气井防砂冲蚀试验装置[J].液压气动与密封,2015(6):35-38.
[3]李效波,张海龙.热采筛管冲蚀与腐蚀迭加作用机理[J].科技导报,2014,32(3):49-55.
[4]张安峰,王豫跃,邢建东.不锈钢与碳钢在液固两相流体中冲刷腐蚀特性的研究[J].兵器材料学与工程,2003,26(2):36-39.
[5]匡韶华.油井防砂筛管适应性试验评价方法研究[J].石油矿场机械,2017,(4):43-47.
[6]刘永红,张建桥,马建民,等.石油防砂割缝筛管的冲蚀磨损性能研究[J].摩擦学学报,2009,29(3):283-287.