The utility model provides a self-excited steam injection valve, which comprises a valve body, a steam injection device and a sliding sleeve, the valve body is provided with an axial through steam inlet channel, and the lower part of the steam inlet channel is connected with a limited ring; the steam injection device comprises a plurality of steam injection channels, the steam injection channel comprises an installation section, a reducing section and a expanding section which are successively connected and arranged from the outside to the inside along the radial direction of the valve body, and a nozzle is installed in the installation section The nozzle is connected with the reducing section, the expanding section is connected with the steam inlet channel; the sliding sleeve can move axially in the steam inlet channel, the side wall of the sliding sleeve is provided with a plurality of steam inlet holes which can be connected with each steam injection channel respectively, the bottom end of the sliding sleeve is provided with a setting part for ball setting, the sliding sleeve is provided with a first working position for connecting the steam injection channel and a second working position for sealing the steam injection channel \u3002 The self-excited steam injection valve of the utility model can form a self-excited mechanism in the steam injection channel of the steam body in the valve body, increase the ability of erosion and cleaning, and realize the unblocking treatment of the oil layer at the same time in the process of steam injection.
【技术实现步骤摘要】
自激式注汽阀
本技术涉及原油开采
,特别涉及一种自激式注汽阀。
技术介绍
为了提高油田稠油、超稠油井开发效果,在稠油、超稠油井中通常实施空汽催化氧化采油,并见到了可喜效果,空汽催化氧化采油是通过向油井中注空汽及高温高压的蒸汽得以实现的。其中选层注空汽及蒸汽效果比笼统注空汽及蒸汽增油效果更加理想。但是在实施过程中发现,由于传统注汽阀的局限性,使得注空汽或蒸汽时只是对油层进行加热处理,而不能对油层进行解堵处理,使得采油效果不是十分理想。
技术实现思路
本技术的目的是提供一种能够在注汽的过程中同时对油层进行解堵处理的自激式注汽阀。为达到上述目的,本技术提供了一种自激式注汽阀,其包括:阀体,其设有轴向贯通的进汽通道,所述进汽通道的下部能拆装的连接有限位环;注汽装置,其包括沿所述阀体的轴向设置的至少一组注汽组件,所述注汽组件包括多个沿所述阀体的周向间隔设置的注汽流道,所述注汽流道包括沿所述阀体的径向由外至内依次连通设置的安装段、缩径段和扩径段,所述扩径段的内径大于所述缩径段的内径,所述安装段内安装有喷嘴,所述喷嘴与所述缩径段相连通,且所述喷嘴的内径小于所述缩径段的内径,所述扩径段与所述进汽通道相连通;滑套,其呈两端敞开的中空筒状,所述滑套能轴向移动的设置于所述进汽通道内,所述滑套的外周面与所述进汽通道的内表面密封配合,所述滑套的侧壁上设有多个能分别与各所述注汽流道相连通的进汽孔,所述滑套的底端设有供投球坐封的坐封部,所述滑套具有抵接所述限位环并连通所述进汽孔与所述注汽流道的 ...
【技术保护点】
1.一种自激式注汽阀,其特征在于,所述自激式注汽阀包括:/n阀体,其设有轴向贯通的进汽通道,所述进汽通道的下部能拆装的连接有限位环;/n注汽装置,其包括沿所述阀体的轴向设置的至少一组注汽组件,所述注汽组件包括多个沿所述阀体的周向间隔设置的注汽流道,所述注汽流道包括沿所述阀体的径向由外至内依次连通设置的安装段、缩径段和扩径段,所述扩径段的内径大于所述缩径段的内径,所述安装段内安装有喷嘴,所述喷嘴与所述缩径段相连通,且所述喷嘴的内径小于所述缩径段的内径,所述扩径段与所述进汽通道相连通;/n滑套,其呈两端敞开的中空筒状,所述滑套能轴向移动的设置于所述进汽通道内,所述滑套的外周面与所述进汽通道的内表面密封配合,所述滑套的侧壁上设有多个能分别与各所述注汽流道相连通的进汽孔,所述滑套的底端设有供投球坐封的坐封部,所述滑套具有抵接所述限位环并连通所述进汽孔与所述注汽流道的第一工作位置以及封堵所述注汽流道的第二工作位置。/n
【技术特征摘要】
1.一种自激式注汽阀,其特征在于,所述自激式注汽阀包括:
阀体,其设有轴向贯通的进汽通道,所述进汽通道的下部能拆装的连接有限位环;
注汽装置,其包括沿所述阀体的轴向设置的至少一组注汽组件,所述注汽组件包括多个沿所述阀体的周向间隔设置的注汽流道,所述注汽流道包括沿所述阀体的径向由外至内依次连通设置的安装段、缩径段和扩径段,所述扩径段的内径大于所述缩径段的内径,所述安装段内安装有喷嘴,所述喷嘴与所述缩径段相连通,且所述喷嘴的内径小于所述缩径段的内径,所述扩径段与所述进汽通道相连通;
滑套,其呈两端敞开的中空筒状,所述滑套能轴向移动的设置于所述进汽通道内,所述滑套的外周面与所述进汽通道的内表面密封配合,所述滑套的侧壁上设有多个能分别与各所述注汽流道相连通的进汽孔,所述滑套的底端设有供投球坐封的坐封部,所述滑套具有抵接所述限位环并连通所述进汽孔与所述注汽流道的第一工作位置以及封堵所述注汽流道的第二工作位置。
2.根据权利要求1所述的自激式注汽阀,其特征在于,
所述阀体的侧壁上能拆装的连接有多个安装架,所述安装架内设有贯通孔,所述贯通孔形成所述注汽流道。
3.根据权利要求2所述的自激式注汽阀,其特征在于,
所述阀体的侧壁上设有用于连接所述安装架的连接孔,所述注汽流道通过所述连接孔与所述进汽通道相连通,所述连接孔设有连接内螺纹,所述安装架设有连接外螺纹,通过所述连接内螺纹与所述连接外螺纹的旋接配合,所述安...
【专利技术属性】
技术研发人员:李文杰,赵大阔,白玉飞,刘笑宁,崔帅,盖磊,黄访源,王书慧,管九洲,
申请(专利权)人:中国石油天然气股份有限公司,
类型:新型
国别省市:北京;11
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