CN111021999B - 一种排液采气一体化管柱 - Google Patents

一种排液采气一体化管柱 Download PDF

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CN111021999B
CN111021999B CN202010165072.7A CN202010165072A CN111021999B CN 111021999 B CN111021999 B CN 111021999B CN 202010165072 A CN202010165072 A CN 202010165072A CN 111021999 B CN111021999 B CN 111021999B
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gas
liquid
sucker rod
oil
hollow sucker
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CN111021999A (zh
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朱红涛
贺东旭
何海峰
乜冦桢
孟晓峰
王荣杰
贾自龙
张军
赵云忠
刘家意
赵军
陈声明
李振峰
朱儒民
郝延锐
刘兴文
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Dongying Haitian Petroleum Technology Co ltd
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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
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/02—Packing the free space between cylinders and pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/143—Sealing provided on the piston

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

本发明涉及一种油田气井中排液采气的一体化生产管柱。本发明主要解决生产费用高、占用设备成本高、水淹后恢复生产周期长等问题。该排液采气一体化管柱主要由：柱塞、泵筒、封隔器等组成。当作业施工完成后，首先上提下放空心杆，地层产出的气液混合物在封隔器的阻隔下全部进入进油阀，随着产出液比例的减少和气体比例的增加，空心杆里气液混合物的等效密度也逐步减小，当空心杆底部压力小于井底压力时，地层压力会推动空心杆的气液混合物由地层升至地面，井底的产出液会依靠气举原理被产出气源源不断的推至地面，经软管进入输气流程，下放空心杆至泵筒底部，即可投入正常生产，本发明得以实现。该发明的优点在于：组合简单、施工方便、成本低。

Description

一种排液采气一体化管柱
技术领域
本发明涉及一种油田井下生产管柱，特别是涉及一种能够在气井中排液采气的一体化生产管柱。
背景技术
在采气过程中，由于地层中含有轻质油或者地层水，造成井底的液体大量聚集，轻则影响气体的产量，重则使气井停产。现在现场上采取的技术措施一般效果不好或者成本太高，较常见的做法是:在井口安装一台抽油机，井下则通常采用一般的采油用生产管柱，当液体较少时，气体生产不受影响，抽油机处于停抽状态，当液体较多气体产量减少时，则启动抽油机抽液，直到气体恢复产能。现场上几乎所有的排液采气的方案都需要地面设备或者是能量补给，中国专利201910428307.4公布了“一种适用于气井全生命周期排水采气的气举”的技术，同样的，该技术也需要提供复杂的电气控制和高压气源，导致该技术的使用维护成本较高。
发明内容
本发明就是提供一种能够克服现有技术的不足，在不依赖外部能源的前提下，能源源不断的将地层产液气举至地面，实现气井全周期的无维护连续生产。
本发明所采用的技术方案是：该排液采气一体化管柱主要由：空心杆密封器、软管、油管、空心杆、柱塞、泵筒、封隔器及尾管等组成。软管、空心抽油杆、柱塞依次连接，油管、泵筒、进油阀、封隔器、尾管依次连接，柱塞与空心杆形成唯一的液流通道，与空心杆与油管之间的环空相隔绝，柱塞在泵筒内可以上下往复运动，泵筒与柱塞形成动密封。本发明的工作过程是：当作业施工完成后，首先要用作业机上提下放空心杆实现排液，上提空心杆时：进油阀打开出油阀关闭，井底的气液混合物进入泵筒；下放空心杆时：进油阀关闭出油阀打开，泵筒里的气液混合物顶开出油阀通过空心抽油杆被排至地面，地层产出的气液混合物在封隔器的阻隔下全部进入进油阀，随着产出液比例的减少气体比例的增加，空心杆里气液混合物的等效密度也逐步减小，形成泡流及段塞流，当空心杆底部压力小于井底压力时，地层压力会推动空心杆的气液混合物由地层升至地面，该过程一旦发生，井底的产出液会依靠气举原理被产出气源源不断的推至地面。此时，下放空心杆至泵筒底部，空心杆与油管之间的环空被彻底封闭，地层产出的气液混合物经进油阀、出油阀、空心杆和软管进入生产流程，本发明的目的得以实现。
优选的，所述的排液采气一体化管柱，其尾管上接有封隔器。
优选的，所述的排液采气一体化管柱，其柱塞本体上装有密封圈。
优选的，所述的排液采气一体化管柱，其柱塞本体与空心杆直接相连。
优选的，所述的排液采气一体化管柱，其柱塞下端装有密封圈，泵筒底部有与之相匹配的密封座，组成***式密封。当然，***式硬密封也是本发明的一种实施方式。柱塞或者下端装有密封圈的目的是为了实现柱塞与泵筒之间的气密封，产出液不会经泵筒和柱塞之间的密封间隙串入空心杆与油管之间的环空。
该发明的优点在于：井下管柱组合简单、现场施工方便、运行成本低、设备投入少。
附图说明
图1为本发明管柱结构示意图。
图2为柱塞的结构简图。
图3为另一种实施例***式密封的结构示意图。
图中：1.软管；2.空心杆密封器；3.空心杆；4.油管；5.柱塞；6.出油阀；7.泵筒；8.进油阀；9.尾管；10.封隔器；11.密封圈。
具体实施方式
下面结合附图对本发明的结构及工作原理做进一步的阐述。
图1中，软管1可采用多层编织的20MPa以上的液压用高压软管，内径要根据产气量选配，空心杆密封器2可选用普通的光杆密封器，空心杆3可根据产气量采用现场常见的36mm、42mm或者小直径油管，油管4可采用27/8”普通平式油管；柱塞5本体可采用普通柱塞的本体，本体外侧要开出放置密封圈的槽，在柱塞5本体的上端与空心杆3的连接可采用直接连接也可以采用加装变扣接头的方式，出油阀6就采用普通抽油泵的出油阀，泵筒7可采用普通抽油泵的泵筒，进油阀8可采用普通抽油泵的进油阀，尾管9最好采用小直径的油管，可以增加排液能力，封隔器10可采用皮碗式封隔器或压缩式封隔器，图2、图3所示的密封圈11可采用“O”或“Y”型密封圈，柱塞上开有与之相适应的密封槽。

Claims (3)

1.一种排液采气一体化管柱的排液采气方法，其特征在于，排液采气一体化管柱包括软管、空心抽油杆密封器、空心抽油杆、油管、抽油泵，软管、空心抽油杆、柱塞本体依次相连，抽油泵下方设置有封隔器，柱塞本体与空心抽油杆直接相连，所述柱塞本体与所述空心抽油杆之间形成唯一的流体通道，与所述空心抽油杆和所述油管之间的环空相隔绝；当作业施工完成后，首先要用作业机上提、下放空心抽油杆实现排液，上提空心抽油杆时：进油阀打开出油阀关闭，井底的气液混合物进入抽油泵泵筒；下放空心抽油杆时：进油阀关闭出油阀打开，抽油泵泵筒里的气液混合物顶开出油阀通过空心抽油杆被排至地面，地层产出的气液混合物在封隔器的阻隔下全部进入进油阀，随着产出液比例的减少气体比例的增加，空心抽油杆里气液混合物的等效密度也逐步减小，形成泡流及段塞流，当空心抽油杆底部压力小于井底压力时，地层压力会推动空心抽油杆的气液混合物由地层升至地面，该过程一旦发生，井底的产出液会依靠气举原理被产出气源源不断的推至地面；此时，下放空心抽油杆至抽油泵泵筒底部，空心抽油杆与油管之间的环空被彻底封闭，地层产出的气液混合物经进油阀、出油阀、空心抽油杆和软管进入生产流程。
2.如权利要求1所述的排液采气方法，其特征在于：柱塞本体上装有密封圈。
3.如权利要求1所述的排液采气方法，其特征在于：柱塞本体下端装有密封圈，抽油泵泵筒底部有与之相匹配的密封座。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2630488Y (zh) * 2003-06-18 2004-08-04 中国石油天然气股份有限公司 浮环泵空心抽油杆循环排砂采油装置
CN2804433Y (zh) * 2005-07-02 2006-08-09 史有刚 软密封套叠式防偏磨抽稠油泵
CN104763621A (zh) * 2015-03-27 2015-07-08 中联煤层气有限责任公司 一种用于煤层气开采的有杆泵设备
CN207093047U (zh) * 2017-07-05 2018-03-13 中国石油天然气股份有限公司 一种负压‑气举采油管柱
CN209179736U (zh) * 2018-10-25 2019-07-30 山西晋城无烟煤矿业集团有限责任公司 一种煤层气地面垂直井防吐砂装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201184171Y (zh) * 2008-04-25 2009-01-21 刘庆敏 防偏磨抽油装置
US8192181B2 (en) * 2009-02-24 2012-06-05 Thompson Pump Company Double standing valve sucker rod pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2630488Y (zh) * 2003-06-18 2004-08-04 中国石油天然气股份有限公司 浮环泵空心抽油杆循环排砂采油装置
CN2804433Y (zh) * 2005-07-02 2006-08-09 史有刚 软密封套叠式防偏磨抽稠油泵
CN104763621A (zh) * 2015-03-27 2015-07-08 中联煤层气有限责任公司 一种用于煤层气开采的有杆泵设备
CN207093047U (zh) * 2017-07-05 2018-03-13 中国石油天然气股份有限公司 一种负压‑气举采油管柱
CN209179736U (zh) * 2018-10-25 2019-07-30 山西晋城无烟煤矿业集团有限责任公司 一种煤层气地面垂直井防吐砂装置

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