The utility model relates to a pumping type drainage gas production plunger, in which the inner cavity of the plunger body is provided with a sliding sleeve with a hollow structure, and four uniformly distributed sliding sleeve inlet holes are arranged in the circumference of the inner passage; the bottom of the sliding sleeve is provided with a claw; the top of the sliding sleeve is connected by a thread and a fishing head; the lower half of the plunger is connected by a thread and the plunger body, and the circumference of the sliding slee There are four uniformly distributed air intake channels and plunger liquid intake holes; the bottom of the lower half cylinder of the plunger is connected with the spring base through threads; one end of the spring is against the sliding sleeve and the other end is against the spring base and compressed into the inner cavity of the lower half cylinder of the plunger; the plunger of the invention flows to the upper part of the plunger through the inner passage of the sliding sleeve, thus realizing fast plunger speed. When the speed goes down, the increase of the upper liquid pushes the sliding sleeve down relative to the lower half of the plunger, so that the claw is clamped to the claw positioning groove, and the spring replacement can realize the change of the liquid lifting volume in a single cycle; during the upward journey, the gas at the bottom of the plunger acts on the inner wall of the sealed rubber cylinder through the intake passage to make it expand and stick to the oil pipe, thus realizing the full use of the plunger and Seal up.
【技术实现步骤摘要】
一种抽子式排水采气柱塞
本专利技术属于石油天然气开采领域的井下排水采气工具,特别涉及一种抽子式排水采气柱塞。
技术介绍
柱塞气举排水采气方法是一种广泛应用的间歇性排水采气措施。柱塞气举方法可以减少井底积液,延长气井生产时间。同时柱塞气举也可以用于易结蜡、结垢的油气井,省去清洗蜡、垢的工序。但也存在一些问题,如生产不连续、关井时间长、上升举液漏失量大等。目前常用的排水采气柱塞有实心柱塞、刷式柱塞、衬垫式柱塞及快速柱塞,其共同存在的不足是无法控制柱塞单次工作周期的举液量以及上升举液漏失严重。当积液过多时,会导致柱塞工具无法顺利到达井口,工艺失败;当积液较少时,地层压力恢复时间短,柱塞上行速度较慢,上升举液过程液体漏失严重,柱塞排液效果较差。
技术实现思路
为了克服上述现有技术的缺陷,本专利技术的目的在于提供一种抽子式排水采气柱塞,可以实现柱塞和油管的充分密封,减少了液体的漏失量,充分利用了气井的能量,通过滑套控制每个工作周期举升液量,使柱塞处于最佳工作效率状态;可实现不关井连续生产。为了达到上述目的,本专利技术的技术方案为:一种抽子式排水采气柱塞,包括空心结构的柱塞本体4 ...
【技术保护点】
1.一种抽子式排水采气柱塞,其特征在于,包括空心结构的柱塞本体(4),柱塞本体(4)内腔设置有上下滑动的滑套(2),滑套(2)上部为空心结构,其内通道(3)周向设有四个均匀分布的滑套进液孔(9);滑套(2)底部设有卡爪(10);滑套2顶部通过螺纹和打捞头1连接;柱塞本体(4)的凹槽中插有密封胶筒(5),密封胶筒(5)通过柱塞下半筒(7)固定,柱塞下半筒(7)通过螺纹和柱塞本体(4)连接;柱塞下半筒(7)周向设有四个均匀分布的进气通道(14)及四个均匀分布的柱塞进液孔(8);柱塞下半筒(7)内壁上设有卡爪定位槽(12),柱塞下半筒(7)底部通过螺纹与弹簧底座(13)连接,弹簧 ...
【技术特征摘要】
1.一种抽子式排水采气柱塞,其特征在于,包括空心结构的柱塞本体(4),柱塞本体(4)内腔设置有上下滑动的滑套(2),滑套(2)上部为空心结构,其内通道(3)周向设有四个均匀分布的滑套进液孔(9);滑套(2)底部设有卡爪(10);滑套2顶部通过螺纹和打捞头1连接;柱塞本体(4)的凹槽中插有密封胶筒(5),密封胶筒(5)通过柱塞下半筒(7)固定,柱塞下半筒(7)通过螺纹和柱塞本体(4)连接;柱...
【专利技术属性】
技术研发人员:徐建宁,王熙,柳愿,席鹏超,王毅博,黄泽奇,
申请(专利权)人:西安石油大学,
类型:发明
国别省市:陕西,61
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