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压裂、酸化是油田主要的增产技术措施,在多油层或厚油层的油井中,各层段渗透率差别较大,需要分层(段)进行压裂,提高低渗层组的动用程度.使用滑套配合封隔器压裂,可实现一次管柱进行3至5个目的层的压裂,成功率高.但当前的滑套压裂工具比较简单,封隔器耐压差低,难解封也是滑套压裂工艺的一大问题.为解决上述问题,研制出喷砂体和封隔融为一体、耐压差大、易防砂堵、易解砂卡的一种新型封隔器,QHY341型封隔器经过两年多试用,效果良好。
Fracturing and acidizing are the main measures to increase oil production in oilfields. In oil wells with multiple oil reservoirs or thick oil reservoirs, permeability varies greatly between layers, and fracturing should be carried out in different layers to improve the utilization of low permeable layers. The use of sliding sleeve with packer fracturing can achieve a series of 3 to 5 fracturing of the target layer with a high success rate.But the current slip sleeve fracturing tool is relatively simple, packer pressure drop is low, difficult Unblocking is also a big issue for the slip-sleeve fracturing process.In order to solve the above problems, a new type of packer has been developed, which integrates the sandblasting body and the seal, has large pressure drop, easy sand control, , QHY341 packer after two years of trial, the effect is good.