The invention relates to a fracturing gas production wellhead of an oil field, in particular to a metal sealing shale gas fracturing gas production wellhead. The top wire middle step outer surface of the device is designed into a circular arc surface, the top wire hole design with inner wall step contact sealing conical surface and the arc surface of the tubing hanger is orderly sheathed on the pressure ring and a metal sealing ring, a supporting seat, an upper pressing ring at the upper end of the top level surface in the tubing hanger on a the standby cap at the lower end of the support seat, preparing the cap is connected to the tubing hanger, the supporting seat is matched with the inclined bottom design of tubing head conical surfaces and the inner wall of the four will be able to sit in the inner cone tubing head four, an upper pressing ring and a supporting seat can compress the metal sealing ring between the tubing hanger and the tubing head four. Seal. The invention realizes the adoption of a metal sealing structure between the four heads of the oil pipe head and the top wire, the oil pipe head of the oil pipe head and the oil pipe hanger, and the whole wellhead channel of the oil pipe is sealed by the metal, which ensures the sealing is effective for a long time and is safe and reliable.
【技术实现步骤摘要】
:本专利技术涉及油田压裂采气井口,特别涉及一种金属密封页岩气压裂采气井口。
技术介绍
:目前压裂采气井口流道采用金属密封结构,但油管头四通与顶丝之间、油管头四通与油管悬挂器之间采用非金属密封结构,受非金属填料性能及使用寿命的制约容易发生泄漏,存在安全隐患,且不易处理,还影响整个施工周期。
技术实现思路
:本专利技术要解决的技术问题是提供一种金属密封页岩气压裂采气井口,该装置实现了油管头四通与顶丝之间、油管头四通与油管悬挂器之间采用金属密封结构,整个井口流道全金属密封,保证密封长期有效,安全可靠。克服了现有压裂采气井口油管头四通与顶丝之间、油管头四通与油管悬挂器之间采用非金属密封结构,易发生泄漏,存在安全隐患的不足。本专利技术所采取的技术方案是:一种金属密封页岩气压裂采气井口,包括油管头四通、顶丝和油管悬挂器;顶丝中部台阶外表面设计成圆弧面,顶丝孔道内壁台阶设计有与圆弧面相配合接触密封的锥面,油管悬挂器上顺次套装有上压环、金属密封环、支撑座,上压环上端顶在油管悬挂器外台阶面上,支撑座下端设有备帽,备帽连接在油管悬挂器上,支撑座下端设计有与油管头四通内壁锥面相匹配的斜面并能够坐在油管头四通内壁锥面上,上压环和支撑座能够压缩金属密封环使油管悬挂器与油管头四通之间密封。本专利技术的有益效果是:本专利技术的油管头四通与顶丝之间、油管头四通与油管悬挂器之间采用金属密封结构,整个井口流道全金属密封,保证密封 ...
【技术保护点】
一种金属密封页岩气压裂采气井口,包括油管头四通(1)、顶丝(2)和油管悬挂器(3);其特征在于:顶丝(2)中部台阶外表面设计成圆弧面(4),顶丝孔道内壁台阶设计有与圆弧面(4)相配合接触密封的锥面(5),油管悬挂器(3)上顺次套装有上压环(6)、金属密封环(7)、支撑座(8),上压环(6)上端顶在油管悬挂器(3)外台阶面上,支撑座(8)下端设有备帽(9),备帽(9)连接在油管悬挂器(3)上,支撑座(8)下端设计有与油管头四通(1)内壁锥面相匹配的斜面并能够坐在油管头四通(1)内壁锥面上,上压环(6)和支撑座(8)能够压缩金属密封环(7)使油管悬挂器(3)与油管头四通(1)之间密封。
【技术特征摘要】
1.一种金属密封页岩气压裂采气井口,包括油管头四通(1)、顶丝(2)
和油管悬挂器(3);其特征在于:顶丝(2)中部台阶外表面设计成圆弧面(4),
顶丝孔道内壁台阶设计有与圆弧面(4)相配合接触密封的锥面(5),油管悬挂
器(3)上顺次套装有上压环(6)、金属密封环(7)、支撑座(8),上压环(6)
上...
【专利技术属性】
技术研发人员:贾振宇,刘福东,刘文科,潘耀庆,雷广财,朱进礼,马锐,姜超,李雪野,王剑飞,王城,张黎黎,郭利,来斌,赵建勇,杨洪武,
申请(专利权)人:中国石油集团渤海石油装备制造有限公司,
类型:发明
国别省市:天津;12
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