WO2014131291A1 - 脉动式配汽阀 - Google Patents
脉动式配汽阀 Download PDFInfo
- Publication number
- WO2014131291A1 WO2014131291A1 PCT/CN2013/086624 CN2013086624W WO2014131291A1 WO 2014131291 A1 WO2014131291 A1 WO 2014131291A1 CN 2013086624 W CN2013086624 W CN 2013086624W WO 2014131291 A1 WO2014131291 A1 WO 2014131291A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve
- hole
- valve body
- steam
- valve seat
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
Definitions
- the invention relates to a steam distribution valve, in particular to a pulse type steam distribution valve in the field of heavy oil steam injection catalytic oxidation oil recovery development. Background technique
- Air catalytic oxidation production is usually carried out in heavy oil and super heavy oil wells, and a gratifying effect is seen.
- Air-catalyzed oxidative recovery is achieved by injecting air into the well and high-temperature and high-pressure steam. The effect of selecting the layer of air and steam is more reasonable than the general effect of air injection and steam.
- the invention provides a pulsating steam distribution valve, and the pulsating steam distribution valve comprises:
- the valve body has an upper end connected to the upper joint, the valve body has a first through hole and a second through hole extending in the axial direction, and an oil injection hole is opened in the upper end side wall of the valve body, and the oil injection hole is The first through hole is in communication; the valve core is axially movably sealed in the first through hole and the second through hole, and the lower end of the valve body is provided with a valve seat, the valve The seat is connected to the valve body by a shear pin;
- a valve seat limiting ring is located at a bottom of the second through hole, and the valve seat limiting ring is coupled to the valve body.
- the diameter of the first through hole is larger than the diameter of the second through hole.
- a spring is interposed between the valve plug and the valve seat.
- the upper joint is connected with a limit ring, the limit ring is located above the valve body, and the valve core abuts against the lower end surface of the limiting ring.
- a plurality of seal rings are respectively provided between the valve body and the inner side wall of the valve body.
- the characteristics and advantages of the pulsation type steam distribution valve of the invention are: by valve ball from the wellhead, the valve ball seat is arranged on the valve seat to seal the steam injection passage, and under the action of constant steam injection pressure, the valve body is placed in the valve body.
- the spool is axially reciprocated within the valve body to open or close the oil injection hole on the valve body for intermittent injection of steam into the oil layer.
- the pulsating steam distribution valve intermittently injects steam into the oil layer to perform steam flushing on the casing wall and the near well ground to remove dirt located in the oil layer of the casing wall and the near well, thereby improving the mining effect on the subsequent crude oil. .
- Figure 1 is a front cross-sectional view of a pulsating valve of the present invention. detailed description
- the present invention provides a pulsating steam distribution valve comprising a valve body 1, a spool 2 and a seat ring 3.
- the upper end of the valve body 1 is connected with an upper joint 4, the valve body 1 has a first through hole 11 and a second through hole 12 which are axially penetrated, and an oil injection hole is opened in the upper end side wall of the valve body 1. 13.
- the oil injection hole 13 is in communication with the first through hole 11; the valve body 2 is axially movably sealed in the first through hole 11 and the second through hole
- valve body 2 the lower end of the valve body 2 is provided with a valve seat 21, the valve seat 21 is connected to the valve body 1 by a shear pin 22; the valve seat limiting ring 3 is located at the bottom of the second through hole 12 The valve seat limiting ring 3 is connected to the valve body 1.
- valve body 1 is substantially cylindrical, and the upper end and the lower end thereof are respectively provided with external thread segments, and the valve body 1 is screwed to the upper joint 4 through the external thread portion of the upper end thereof, and the external thread segment of the lower end of the valve body 1 is used for the thread.
- the first through hole 11 which is axially opened in the middle of the valve body 1 is located above the second through hole 12 and communicates with each other.
- the diameter of the first through hole 11 is larger than that of the second through hole 12 diameter.
- the spool 2 has a substantially cylindrical shape and has a steam injection hole 23, the upper outer diameter of the valve core 2 is larger than the lower outer diameter thereof, and the upper outer diameter of the valve core 2 is the same as the diameter of the first through hole 11 of the valve body 1, the valve The lower outer diameter of the core 2 is the same as the diameter of the second through hole 12 of the valve body 1, the upper portion of the spool 2 is located in the first through hole 11 of the valve body 1, and the lower portion thereof is bored in the second through hole of the valve body 1. In the 12th, the spool 2 is axially reciprocally movable in the first through hole 11 and the second through hole 12 of the valve body 1.
- a plurality of seal rings 5 are respectively disposed between the valve body 2 and the inner side wall of the valve body 1, and are disposed between the upper portion of the valve body 2 and the inner side wall of the valve body 1 in which the first through hole 11 is opened.
- Two sealing rings 5 are respectively located at upper and lower ends of the oil injection hole 13; a sealing ring 5 is disposed between the lower portion of the valve body 2 and the inner side wall of the valve body 1 through which the second through hole 12 is opened.
- the seal rings 5 are used to seal the gap between the valve body 1 and the spool 2 to prevent vapor leakage during the axial movement of the spool 2 in the valve body 1 during steam injection.
- the valve seat 21 is substantially in the shape of a flat cylinder having a through hole 211, the outer diameter of the valve seat 21 is matched with the diameter of the second through hole 12 of the valve body 1, and the valve seat 21 is connected to the valve body 1 by the shear pin 22. .
- a spring 6 is interposed between the valve body 2 and the valve seat 21, and the valve core 2 can be under the elastic force of the spring 6, at the first through hole 11 and the second through hole 12 of the valve body 1.
- the inner axis reciprocates.
- the valve seat limiting ring 3 is substantially in the shape of a flat cylinder, and has a through hole 31.
- the outer surface of the valve seat limiting ring 3 is provided with an externally threaded portion which is located at the lower end of the second through hole 12 of the valve body 1 and is screwed to the valve.
- the upper joint 4 is internally threaded to the limit ring 7 , the limit ring 7 is located above the valve body 1 , the valve core 2 abuts against the lower end surface of the limiting ring 7 , and the limiting ring 7 is used to abut against the valve core 2.
- the spool 2 is prevented from moving axially upwardly out of the valve body 1 by the elastic force of the spring 6.
- the valve seat 21 is made of a magnetic material, which is capable of Ensure that the valve ball falls reliably and stably on the upper end of the valve seat 21 to ensure that the valve ball seals the steam injection passage of the pulsation type steam distribution valve; after the valve ball seat is set on the valve seat 21, steam is injected into the oil pipe, with the steam injection When the pressure rises, the shear pin 22 connecting the valve seat 21 and the valve body 1 is sheared.
- the valve seat 21 falls on the seat ring 3; since the upper end area of the valve body 2 is larger than the lower end area thereof, Under the action of the steam pressure, the spool 2 is subjected to a downward resultant force and starts to move axially downward against the elastic force of the spring 6, and when the spool 2 is moved down to the lower end of the oil injection hole 13 opened in the upper portion of the valve body 1, this At the same time, since the steam injection pressure is vented from the oil injection hole 13, the pressure at the upper portion of the valve core 2 starts to gradually decrease, and it will start to move axially upward under the elastic force of the spring 6, until the oil injection hole 13 is blocked; When the steam injection pressure reaches a certain pressure, the spool 2 starts to fall again. Moving, so that repeated intermittent opening or closing the oil injection hole 13, thereby achieving the purpose of repeated intermittent injection of steam into the oil layer.
- the pulsating steam distribution valve of the invention passes the ball from the wellhead, so that the valve ball seat is arranged on the valve seat 21 to seal the steam injection
- the passage under the action of constant steam injection pressure, causes the valve body 2 located in the valve body 1 to reciprocally move axially within the valve body 1 to open or close the oil injection hole 13 on the valve body 1 to achieve an intermittent orientation.
- the pulsating steam distribution valve intermittently injects steam into the oil layer to perform steam flushing on the casing wall and the near well ground to remove dirt located in the oil layer of the casing wall and the near well, thereby improving the mining effect on the subsequent crude oil. .
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
一种脉动式配汽阀，其包括：阀本体（1），其上端连接有上接头（4），阀本体（1）具有轴向贯通的第一通孔（11）和第二通孔（12），阀本体（1）的上端侧壁上开设有油注孔（13），油注孔（13）与第一通孔（11）相连通；阀芯（2），其可轴向移动地密封设置在第一通孔（11）和第二通孔（12）中，阀芯（2）的下端设有阀座（21），阀座（21）通过剪断销钉（22）连接在阀本体（1）内；阀座限位环（3），其位于第二通孔（12）的底部，阀座限位环（3）连接在阀本体（1）上。该脉动式配汽阀，能够间歇性的向油层中注汽，使套管壁及近井地带得到有效的冲洗，提高原油的开采效果。
Description
脉动式配汽阀
技术领域
本发明有关于一种配汽阀，尤其有关于一种稠油注汽催化氧化采油开发领域中的脉 动式配汽阀。 背景技术
目前， 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气 催化氧化采油， 并见到了可喜效果。空气催化氧化采油是通过向油井中注空气及高温高 压的蒸汽得以实现的，其中选层注空气及蒸汽效果比笼统注空气及蒸汽增油效果更加理 相
但是， 在实施过程中发现， 由于近井地带及套管管壁常存在污垢等情况， 而传统注 汽管柱上的配汽阀只是单纯地向油层中注汽， 其不能对油层进行有效的处理， 在注空气 或蒸汽时， 近井地带及套管管壁上的污垢常常影响原油的进出， 导致采油效果不是十分 理想。
因此， 有必要提供一种新的配汽阀， 来克服上述缺陷。 发明内容
本发明的目的是提供一种脉动式配汽阀， 其能够间歇性的向油层中注汽， 使套管壁 及近井地带得到有效的冲洗， 提高原油的开采效果。
本发明的上述目的可采用下列技术方案来实现：
本发明提供一种脉动式配汽阀， 所述脉动式配汽阀包括：
阀本体， 其上端连接有上接头， 所述阀本体具有轴向贯通的第一通孔和第二通 孔， 所述阀本体的上端侧壁上开设有油注孔， 所述油注孔与所述第一通孔相连通； 阀芯， 其可轴向移动地密封设置在所述第一通孔和所述第二通孔中， 所述阀芯 的下端设有阀座， 所述阀座通过剪断销钉连接在所述阀本体内；
阀座限位环， 其位于所述第二通孔的底部， 所述阀座限位环连接在所述阀本体 上。
在优选的实施方式中， 所述第一通孔的直径大于所述第二通孔的直径。
在优选的实施方式中， 在所述阀芯与所述阀座之间夹设有弹簧。
在优选的实施方式中， 所述上接头内连接有限位环， 所述限位环位于所述阀本体的 上方， 所述阀芯顶抵在所述限位环的下端面上。
在优选的实施方式中， 在所述阀芯与所述阀本体的内侧壁之间分别设有多个密封 圈。
本发明的脉动式配汽阀的特点及优点是： 通过自井口投阀球， 使阀球座设在阀座上 以密封注汽通道， 在不断的注汽压力作用下， 使位于阀本体内的阀芯在阀本体内轴向往 复移动， 以打开或关闭阀本体上的油注孔， 实现间断性的向油层中注汽的目的。该脉动 式配汽阀间歇性的向油层中注汽， 以对套管壁及近井地进行蒸汽冲洗， 以清除位于套管 壁及近井地油层中的污垢， 提高对后续原油的开采效果。 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用 的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明的一些实施例， 对 于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获得 其他的附图。
图 1为本发明的脉动式配汽阀的主视剖视图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清楚、完整 地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基 于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有 其他实施例， 都属于本发明保护的范围。
如图 1所示， 本发明提供一种脉动式配汽阀， 其包括阀本体 1、 阀芯 2和阀座限位 环 3。 其中： 阀本体 1的上端连接有上接头 4， 所述阀本体 1具有轴向贯通的第一通孔 11和第二通孔 12，所述阀本体 1的上端侧壁上开设有油注孔 13，所述油注孔 13与所述 第一通孔 11相连通； 阀芯 2可轴向移动地密封设置在所述第一通孔 11和所述第二通孔
12中， 所述阀芯 2的下端设有阀座 21， 所述阀座 21通过剪断销钉 22连接在所述阀本 体 1内； 阀座限位环 3位于所述第二通孔 12的底部， 所述阀座限位环 3连接在所述阀 本体 1上。
具体是， 阀本体 1大体呈圆柱体形， 其上端和下端分别设有外螺纹段， 阀本体 1通 过其上端的外螺纹段与上接头 4螺纹连接， 阀本体 1下端的外螺纹段用于螺纹连接其它
井下配套工具； 阀本体 1中部轴向开设的第一通孔 11位于第二通孔 12的上方， 二者相 互连通， 在本发明中， 第一通孔 11的直径大于第二通孔 12的直径。
阀芯 2大体呈圆柱体形，其具有注汽孔 23， 阀芯 2的上部外径大于其下部外径， 阀 芯 2的上部外径与阀本体 1的第一通孔 11的直径相同， 阀芯 2的下部外径与阀本体 1 的第二通孔 12的直径相同， 阀芯 2的上部位于阀本体 1的第一通孔 11内， 其下部穿设 在阀本体 1的第二通孔 12内， 阀芯 2可在阀本体 1的第一通孔 11和第二通孔 12内轴 向往复移动。 在本发明中， 在阀芯 2与阀本体 1的内侧壁之间分别设有多个密封圈 5， 在阀芯 2的上部与阀本体 1开设第一通孔 11的内侧壁之间设有两个密封圈 5，该两密封 圈 5分别位于油注孔 13的上下两端；在阀芯 2的下部与阀本体 1开设第二通孔 12的内 侧壁之间设有一个密封圈 5。 该些密封圈 5用于密封阀本体 1与阀芯 2之间的缝隙， 防 止在注汽时， 阀芯 2在阀本体 1内轴向移动的过程中存在汽体泄漏的情况发生。
阀座 21大体呈扁圆柱体形， 其具有通孔 211， 阀座 21的外径与阀本体 1的第二通 孔 12的直径相匹配， 并且阀座 21通过剪断销钉 22连接在阀本体 1上。 在本发明中， 在阀芯 2与阀座 21之间夹设有弹簧 6， 阀芯 2可在弹簧 6的弹性力作用下， 在阀本体 1 的第一通孔 11和第二通孔 12内轴向往复移动。
阀座限位环 3大体呈扁圆柱体形，其具有通孔 31，阀座限位环 3外表面设有外螺纹 段， 其位于阀本体 1的第二通孔 12的下端并螺纹连接在阀本体 1的内侧壁上。
进一步的， 上接头 4内螺纹连接有限位环 7， 限位环 7位于阀本体 1的上方， 阀芯 2顶抵在限位环 7的下端面上， 限位环 7用于顶抵阀芯 2， 防止阀芯 2在弹簧 6的弹性 力作用下轴向上移出阀本体 1。
当需要向油层中注汽时，首先从井口投阀球， 阀球穿过阀芯 2和弹簧 6落在阀座 21 的上端， 在本发明中， 阀座 21 由磁性材料制成， 其能够保证阀球可靠稳定地落在阀座 21上端， 以保证阀球密封脉动式配汽阀的注汽通道； 待阀球座设在阀座 21上后， 向油 管内注蒸汽， 随着注汽压力的升高， 连接阀座 21和阀本体 1的剪断销钉 22被剪断， 此 时， 阀座 21落在阀座限位环 3上； 由于阀芯 2的上端面积大于其下端面积， 在注汽压 力的作用下， 阀芯 2受到向下的合力作用并克服弹簧 6的弹力开始轴向向下移动， 当阀 芯 2下移到阀本体 1上部开设的油注孔 13的下端时， 此时， 由于注汽压力从油注孔 13 处泄掉， 阀芯 2上部的压力开始逐渐减少， 其将在弹簧 6的弹力作用下开始轴向上移， 直至封堵住油注孔 13; 当注汽压力达到一定压力时， 阀芯 2又开始向下运动，这样反复 间断性的打开或关闭油注孔 13， 从而实现反复间断性的向油层中注汽的目的。
本发明的脉动式配汽阀， 通过自井口投阀球， 使阀球座设在阀座 21上以密封注汽
通道， 在不断的注汽压力作用下， 使位于阀本体 1内的阀芯 2在阀本体 1内轴向往复移 动， 以打开或关闭阀本体 1上的油注孔 13， 实现间断性的向油层中注汽的目的。该脉动 式配汽阀间歇性的向油层中注汽， 以对套管壁及近井地进行蒸汽冲洗， 以清除位于套管 壁及近井地油层中的污垢， 提高对后续原油的开采效果。
以上所述仅为本发明的几个实施例，本领域的技术人员依据申请文件公开的内容可 以对本发明实施例进行各种改动或变型而不脱离本发明的精神和范围。
Claims
1、 一种脉动式配汽阀， 其特征在于， 所述脉动式配汽阀包括：
阀本体， 其上端连接有上接头， 所述阀本体具有轴向贯通的第一通孔和第二通 孔， 所述阀本体的上端侧壁上开设有油注孔， 所述油注孔与所述第一通孔相连通； 阀芯， 其可轴向移动地密封设置在所述第一通孔和所述第二通孔中， 所述阀芯 的下端设有阀座， 所述阀座通过剪断销钉连接在所述阀本体内；
阀座限位环， 其位于所述第二通孔的底部， 所述阀座限位环连接在所述阀本体 上。
2、 如权利要求 1所述的脉动式配汽阀， 其特征在于， 所述第一通孔的直径大于所 述第二通孔的直径。
3、 如权利要求 1所述的脉动式配汽阀， 其特征在于， 在所述阀芯与所述阀座之间 夹设有弹簧。
4、如权利要求 1所述的脉动式配汽阀， 其特征在于， 所述上接头内连接有限位环， 所述限位环位于所述阀本体的上方， 所述阀芯顶抵在所述限位环的下端面上。
5、 如权利要求 1所述的脉动式配汽阀， 其特征在于， 在所述阀芯与所述阀本体的 内侧壁之间分别设有多个密封圈。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065334.2 | 2013-03-01 | ||
| CN2013100653342A CN103147721A (zh) | 2013-03-01 | 2013-03-01 | 脉动式配汽阀 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014131291A1 true WO2014131291A1 (zh) | 2014-09-04 |
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ID=48546004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/086624 Ceased WO2014131291A1 (zh) | 2013-03-01 | 2013-11-06 | 脉动式配汽阀 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103147721A (zh) |
| WO (1) | WO2014131291A1 (zh) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147721A (zh) * | 2013-03-01 | 2013-06-12 | 中国石油天然气股份有限公司 | 脉动式配汽阀 |
| CN103867161B (zh) * | 2014-02-25 | 2016-06-08 | 中国石油天然气股份有限公司 | 一种注汽封堵阀 |
| CN111379539B (zh) * | 2018-12-28 | 2022-05-10 | 中国石油天然气股份有限公司 | 起振配汽阀 |
| CN113216897B (zh) * | 2021-05-27 | 2022-07-08 | 大庆市天德忠石油科技有限公司 | 一种固井施工用浮箍浮鞋 |
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| CN103147721A (zh) | 2013-06-12 |
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