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开关阀桥塞是暂(或永久)封堵下部油、气、水、漏等层,对上部产层进行压裂酸化、加砂压裂及测试等作业的重要井下工具。分5″和7″两种规格,既可解决因下层压力高、漏失严重而上部无法试油的问题,又可避免注水泥塞、钻水泥塞回采下层油、气,从而加快试油速度,降低试油成本。 开关阀桥塞结构(见图)分为丢手机构、双卡瓦封隔器及开关凡尔。丢手机构由
On-off valve bridge plugging is a temporary (or permanent) blocking the lower part of the oil, gas, water, leakage, the upper production fracturing and acidizing, sand fracturing and testing operations and other important underground tools. Divided into 5 “and 7” two kinds of specifications, both to solve the problem of high pressure, leakage serious and the upper part can not test the oil, but also to avoid the cement plug, drill the cement plug back to the lower oil, gas, thus speeding up the test oil speed, Reduce the cost of test oil. Switch valve bridge plug structure (see photo) is divided into throwing hand, double slip packer and switch Versail. Lost hand by the mechanism