轴向推进式水力油管锚定器的研制与应用

Development and application of axial push-on hydraulic tubing anchor

油管锚定工具是带有封隔器的措施管柱密封可靠、安全施工的保证。针对现有油管锚定器易出现卡钻、无法通过套管变形段、不利于突发事故处理等问题,研制了轴向推进式水力油管锚定器。该轴向推进式水力油管锚定器改变了现有径向辐射状多活塞式锚爪结构的油管锚定器锚定机理,采用了环形轴向水力活塞推动锥体轴向位移来扩张卡瓦实现油管卡定的油管锚定原理,其锚定性能、耐压能力及安全性能得到了全面提高,同时扩大了适用范围。中原油田进行了8井次的压裂、酸化试验,均起到了对管柱的锚定作用,保证了整个施工过程封隔器密封可靠,成功率100%,可进一步推广应用。

Tubing anchor is a guarantee for reliable sealing and safe operation of fracturing string with packers. In line with the problems such as sticking, failure of passing in casing deformation and difficulties of dealing with unexpected incidents, an axial push- on hydraulic tubing anchor was developed. It changed the anchoring mechanism of tubing anchor string, which using radial radiated multi-piston fluke structure. Now, it uses the anchoring principle of annular axial hydraulic piston to drive the cone to axial displacement to expand the slip and hence anchor the tubing. Its anchoring performance, pressure strength and safety performance are fully improved, and its range of application is also expanded. This tubing anchor has been tested 8 well-time on fracturing and acidizing in Zhongyuan Oilfield, 100% successfully providing anchoring for the tubing and ensuring reliable sealing of packers during the whole operation. It can be further promoted and applied