摘要
针对扩张式胶筒在受高压后出现钢片回收不完全,起管柱时钢片易卡死在套管中,造成管柱无法起出的问题,研究了易起式高压多层压裂管柱。该管柱主要由节流喷砂器、多级KY344-114型封隔器、多级喷砂器、水力锚和安全接头组成,采用新型的KY344-114型封隔器既具有停泵即解封,又具有耐高压的能力。现场应用结果表明,该管柱工艺原理可行,工具结构可靠,一次性起出率达93%,适合高压井的多层压裂。
When the expanding packer rubber is subject to high pressure, there occur problems, such as incomplete steel sheet recycling and the steel sheet easily getting stuck in casing in string tripping to lead to the failure to trip the string. Therefore, the easy-to-trip high pressure multi-layer fracture string was studied. The string mainly consists of throttling sand blower, multi-stage KY344 -114 packer, multi-stage sand blower, hydraulic an- chor and safety joint. The new packer has the capacity to achieve releasing as soon as the pump stops and it is also capable of resisting high pressure. The field application shows that the string＇s technological principle is feasible and its structure is reliable. The success rate of once pulling-out reaching 93 % , the string is suitable for multi-layer fracturing in high pressure wells.
出处
《石油机械》
北大核心
2012年第8期113-115,共3页
China Petroleum Machinery
