新型高温井井下控制阀的研制与应用  

Downhole switch valve for high-temperature wells

作　　者：胡义[1] 李啸南[2] 尚跃强[2] 逯国成[2] 黄侠[2] 崔晓霖[3] 

机构地区：[1]胜利油田有限公司孤岛采油厂 [2]胜利油田有限公司采油工艺研究院 [3]胜利油田有限公司东辛采油厂

出　　处：《石油机械》2005年第7期41-42,93,共2页China Petroleum Machinery

基　　金：中国石油天然气集团公司科技攻关课题"胜利超稠油开采新技术试验研究"(课题编号:KG95035)中的研究成果。

摘　　要：针对稠油注汽热采井中,压井液、洗井液进入地层使井下温度降低,造成转抽后开井困难;转抽前井内压力释放不彻底,易发生井喷或外溢等情况,研制了新型高温井井下控制阀。该阀的创新点:(1)采用齿轮齿条传动机构把管柱的直线运动变为阀球旋转运动,使阀球的开关更灵活,由锁爪、弹簧和支撑环组成的锁紧机构牢靠,不受阀球上下压差的影响;(2)球面金属密封在高温高压下密封性好;(3)阀球内通径大,打开后阀球通道与管柱同心,成为流体流动的畅通通道;(4)提放管柱开关球阀操作方便,可用于注汽热采井、直井、非热采井和大斜度井。To solve the problem of well fluid overflow in heavy oil thermal recovery wells, a novel downhole switch valve is developed. The characteristics of this valve lie in: (1) the valve ball can be opened and closed flexibly by using the rack-gear transmission mechanism, and the locking mechanism comprised of locking claw and spring and supporting ring is reliable and is not influenced by the pressure differential on the valve ball; (2) the metal seal of the valve ball surface seals well at high temperature and high pressure; (3) the valve ball has large internal diameter and provides a smooth flow passage for the well fluid; (4) the ball valve can be switched conveniently in pulling and lowering the string.

关 键 词：控制阀 高温井 井下 研制 应用 热采井 温度降低 压力释放 旋转运动 直线运动 传动机构 齿轮齿条 锁紧机构 金属密封 流体流动 操作方便 大斜度井 阀球 压井液 洗井液 管柱 支撑环 密封性 注汽 开关 通道 稠油 井喷 压差 

分 类 号：TE256.9[石油与天然气工程—油气井工程] TH137.52[机械工程—机械制造及自动化]