WO2012122720A1 - Parallel passage-typed flow controller - Google Patents

Parallel passage-typed flow controller Download PDF

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Publication number
WO2012122720A1
WO2012122720A1 PCT/CN2011/072159 CN2011072159W WO2012122720A1 WO 2012122720 A1 WO2012122720 A1 WO 2012122720A1 CN 2011072159 W CN2011072159 W CN 2011072159W WO 2012122720 A1 WO2012122720 A1 WO 2012122720A1
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Prior art keywords
flow controller
parallel
throttle
nozzle
flow
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PCT/CN2011/072159
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French (fr)
Chinese (zh)
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石云夫
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Shi Yunfu
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Publication of WO2012122720A1 publication Critical patent/WO2012122720A1/en

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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
    • 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
    • E21B43/32—Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells
    • 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
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/02—Down-hole chokes or valves for variably regulating fluid flow

Definitions

  • the invention relates to a flow controller, in particular to a parallel channel flow controller.
  • the horizontal length of horizontal wells ranges from more than 100 meters to more than 1000 meters, usually about 500 meters. Due to the existence of pipe flow resistance, the distribution of liquid supply in horizontal well sections will be uneven, resulting in differences in production pressure difference. Therefore, the water cone phenomenon occurs prematurely; once the water cone appears, the water content of the oil well will rise rapidly, which will seriously affect the production of the oil well, and at the same time affect the final economic benefit of the single well and the development benefit of the oil field.
  • the object of the present invention is to provide a parallel-channel flow controller with wide control range and good adaptability to flow.
  • the parallel-channel flow controller of the present invention comprises a fluid main channel, and the outer circumference of the fluid main channel is parallelly distributed with one or more throttle small holes, and the throttle small nozzle inner end is provided with a throttle nozzle.
  • the parallel channel type flow controller of the present invention has one to a plurality of small orifices arranged in parallel along the outer circumference of the main tunnel, and the inner end of the throttle orifice is threaded.
  • the flow resistance is controlled by the aperture, the number of orifices, and the diameter or blind hole of the nozzle installed at the inner end of the small orifice.
  • FIG. 1 is a schematic structural view of a parallel channel type flow controller according to an embodiment of the present invention.
  • Figure 2 is a schematic cross-sectional view of the A-A of Figure 1;
  • FIG. 3 is a schematic enlarged view of a portion B of FIG. 1.
  • a fluid main channel is included, and one outer side of the fluid main channel is parallelly distributed with one or more small orifices, and a throttling nozzle is installed at an inner end of the small orifice.
  • the throttle nozzle is provided with a through hole or a blind hole (plug).
  • the throttle nozzle and the throttle orifice may be threadedly engaged.
  • the flow controller is respectively provided with threads on both ends, and is respectively connected with the oil pipe of the horizontal well water cone control pipe string.
  • One end of the thread is one end threaded and the other end is external thread.
  • the parallel channel type flow controller provided by the embodiment of the invention is used for controlling the liquid supply flow rate of the horizontal wells in the oil and gas field, and can overcome the problem of uneven distribution of the horizontal well supply in the horizontal well production process, and greatly increase the flow control.
  • the distribution density of the device keeps the flow rate of each flow controller low, prevents high-speed erosion and quickly changes the hydraulic parameters of the flow controller, thus preventing the water cone phenomenon from appearing prematurely, thus preventing the water cone from affecting.
  • the production of oil and gas wells can significantly reduce the cost of horizontal well water cone control technology;
  • the flow controller has a fluid main channel and one or more throttling small holes parallelly distributed on the outer circumference of the main channel, and the inner end of the throttle small hole is threaded for mounting the throttling nozzle and the plug, and the nozzle is used for the nozzle In order to adjust the flow resistance of the fluid, it is also possible to install a plug to block the excess small holes;
  • the parallel hole type flow controller has threads at both ends, and can be directly connected with the oil pipes of the horizontal well water cone control pipe column at both ends, or can be connected to the oil pipes at both ends through the variable buckle joint;
  • the parallel-channel flow controller controls the flow resistance by the orifice of the orifice, the number of orifices, and the nozzles and plugs installed at the inner end of the orifice.
  • FIG. 1 is a schematic structural diagram of a parallel-channel flow controller according to an embodiment of the present invention, including: a main flow channel 1 , a small orifice 2 , and a parallel flow channel flow controller. External thread 3, internal thread 4 of the other end of the parallel channel flow controller, where:
  • the inner end of the throttle orifice 2 of the parallel-channel flow controller is provided with an internal thread 6 for mounting the throttle nozzle 5, and when the throttle orifice 2 needs to be blocked, the throttle nozzle 5 is blocked.
  • Head mode
  • Parallel channel flow controllers set corresponding hydraulic parameters for flow controllers at specific locations according to the technical requirements of flow control during installation and operation. Pay attention to the alignment installation to avoid tightening the buckles in the small orifices. clamp.
  • the parallel channel type flow controller is installed through the oil pipe to the horizontal well water cone control pipe column, and the parallel hole type flow controller can be directly connected with the oil pipe, and can also be buckled when needed.
  • the joints are respectively connected to the oil pipes at both ends to complete the implementation work.

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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)
  • Pipe Accessories (AREA)
  • Lift Valve (AREA)

Abstract

A parallel passage-typed flow controller includes a main fluid passage (1) and one or more small throttling passages (2) distributed around the main fluid passage (1) in parallel. An inner end of the small throttling passage (2) is provided with a female thread (6) for mounting a throttling nozzle or a plug (5). Two ends of the controller are respectively provided with a male thread (3) and a female thread (4) for connecting with an oil pipe of a water cone control string of a horizontal well. By the controller, the distribution density of the flow controller can be increased so as to reduce the flow of each flow controller, to uniformly supply liquid to the formation, to prevent the formation of the water cone and the high-speed washout that may rapidly change the hydraulic parameter of the flow controller, and to reduce the cost of the cone control technology of the horizontal well.

Description

平行孔道式流量控制器  Parallel channel flow controller
本申请要求于2011年3月11日提交中国专利局、申请号为201110059757.4、发明名称为“水锥控制的平行孔道式流量控制器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。The present application claims priority to Chinese Patent Application No. 201110059757.4, entitled "Water Cone Controlled Parallel Channel Flow Controller", filed on March 11, 2011, the entire contents of which are incorporated herein by reference. In this application.
技术领域 Technical field
本发明涉及一种流量控制器，尤其涉及一种平行孔道式流量控制器。The invention relates to a flow controller, in particular to a parallel channel flow controller.
发明背景Background of the invention
目前，在油气田开发过程中，水平井的地层供液流量控制器大多是与防砂筛管结合的方式使用，在防砂筛管柱的中心管柱，在不需要防砂的裸眼井及套管井中，以喷嘴控制的方式为主。喷嘴的流动阻力小，对流量的控制范围很窄，适应性差。At present, in the development of oil and gas fields, the formation flow control controllers of horizontal wells are mostly used in combination with sand control screens. In the central column of sand control screen columns, in open hole and cased wells that do not require sand control, Mainly in the way of nozzle control. The flow resistance of the nozzle is small, the flow control range is narrow, and the adaptability is poor.
而水平井的水平段长度从100多米到1000多米不等，通常是500米左右，由于管流阻力的存在，就会使得水平井段地层供液量的分布不均匀，导致生产压差存在差异，从而过早出现水锥现象；水锥一旦出现，油井的含水就会快速上升，这样就会严重影响油井的生产，同时影响单井的最终经济效益和油田的开发效益。The horizontal length of horizontal wells ranges from more than 100 meters to more than 1000 meters, usually about 500 meters. Due to the existence of pipe flow resistance, the distribution of liquid supply in horizontal well sections will be uneven, resulting in differences in production pressure difference. Therefore, the water cone phenomenon occurs prematurely; once the water cone appears, the water content of the oil well will rise rapidly, which will seriously affect the production of the oil well, and at the same time affect the final economic benefit of the single well and the development benefit of the oil field.
发明内容Summary of the invention
本发明的目的是提供一种对流量的控制范围宽、适应性好的平行孔道式流量控制器。The object of the present invention is to provide a parallel-channel flow controller with wide control range and good adaptability to flow.
本发明的目的是通过以下技术方案实现的：The object of the invention is achieved by the following technical solutions:
本发明的平行孔道式流量控制器，包括流体主孔道，所述流体主孔道的外周平行分布有一个或多个节流小孔道，所述节流小孔道内端安装有节流喷嘴。The parallel-channel flow controller of the present invention comprises a fluid main channel, and the outer circumference of the fluid main channel is parallelly distributed with one or more throttle small holes, and the throttle small nozzle inner end is provided with a throttle nozzle.
由上述所提供的技术方案可以看出，本发明所述平行孔道式流量控制器，由于主孔道外圆周平行分布有一个到多个节流小孔道，节流小孔道的内端有螺纹，用于安装节流喷嘴，通过节流小孔道的孔径、数量和小孔道内端安装的喷嘴的口径或盲孔实现对流动阻力的控制。通过该平行孔道式流量控制器，就能够实现对流体流动阻力的精确的大范围的控制，解决水平井水锥控制的技术瓶颈，使流量控制器的分布密度大大增加，每个流量控制器承担的流量保持较低的数值，防止高速冲蚀而很快改变流量控制器的水力参数，并能够大幅度降低水平井水锥控制技术方面的实施成本。It can be seen from the above technical solution that the parallel channel type flow controller of the present invention has one to a plurality of small orifices arranged in parallel along the outer circumference of the main tunnel, and the inner end of the throttle orifice is threaded. For the installation of the throttling nozzle, the flow resistance is controlled by the aperture, the number of orifices, and the diameter or blind hole of the nozzle installed at the inner end of the small orifice. Through the parallel channel flow controller, accurate and wide-range control of fluid flow resistance can be realized, the technical bottleneck of horizontal well water cone control is solved, and the distribution density of the flow controller is greatly increased, and each flow controller bears The flow rate is kept low, preventing high-speed erosion and quickly changing the hydraulic parameters of the flow controller, and can greatly reduce the implementation cost of the horizontal well water cone control technology.
附图简要说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明实施例所提供平行孔道式流量控制器的结构示意图；1 is a schematic structural view of a parallel channel type flow controller according to an embodiment of the present invention;
图2为图1的A-A截面结构示意图；Figure 2 is a schematic cross-sectional view of the A-A of Figure 1;
图3为图1的B部放大结构示意图。3 is a schematic enlarged view of a portion B of FIG. 1.
实施本发明的方式Mode for carrying out the invention
本发明的平行孔道式流量控制器，其较佳的具体实施方式是：A preferred embodiment of the parallel-channel flow controller of the present invention is:
包括流体主孔道，所述流体主孔道的外周平行分布有一个或多个节流小孔道，所述节流小孔道内端安装有节流喷嘴。A fluid main channel is included, and one outer side of the fluid main channel is parallelly distributed with one or more small orifices, and a throttling nozzle is installed at an inner end of the small orifice.
所述节流喷嘴设有通孔或盲孔（堵头）。The throttle nozzle is provided with a through hole or a blind hole (plug).
所述节流喷嘴与所述节流小孔道可以螺纹配合。The throttle nozzle and the throttle orifice may be threadedly engaged.
该流量控制器两端分别设有螺纹，并分别与水平井水锥控制管柱的油管连接，两端的螺纹中，一端为内螺纹，另一端为外螺纹。The flow controller is respectively provided with threads on both ends, and is respectively connected with the oil pipe of the horizontal well water cone control pipe string. One end of the thread is one end threaded and the other end is external thread.
本发明实施例提供的平行孔道式流量控制器，用于油气田水平井地层供液流量控制，能够克服水平井生产过程中，存在的水平井地层供液量分布不均匀的问题，大大增加流量控制器的分布密度，使每个流量控制器承担的流量保持较低的数值，防止高速冲蚀而很快改变流量控制器的水力参数，从而防止水锥现象的过早出现，从而防止水锥影响油气井的生产，并能够大幅度降低水平井水锥控制技术方面的成本；The parallel channel type flow controller provided by the embodiment of the invention is used for controlling the liquid supply flow rate of the horizontal wells in the oil and gas field, and can overcome the problem of uneven distribution of the horizontal well supply in the horizontal well production process, and greatly increase the flow control. The distribution density of the device keeps the flow rate of each flow controller low, prevents high-speed erosion and quickly changes the hydraulic parameters of the flow controller, thus preventing the water cone phenomenon from appearing prematurely, thus preventing the water cone from affecting. The production of oil and gas wells can significantly reduce the cost of horizontal well water cone control technology;
流量控制器有一个流体主孔道和平行分布在主孔道外圆周的一个到多个节流小孔道，节流小孔道的内端有螺纹，用于安装节流喷嘴和堵头，喷嘴用于调节流体的流动阻力，也可以安装堵头封堵多余的小孔道；The flow controller has a fluid main channel and one or more throttling small holes parallelly distributed on the outer circumference of the main channel, and the inner end of the throttle small hole is threaded for mounting the throttling nozzle and the plug, and the nozzle is used for the nozzle In order to adjust the flow resistance of the fluid, it is also possible to install a plug to block the excess small holes;
平行孔道式流量控制器的两端有螺纹，可以直接分别与两端的水平井水锥控制管柱的油管连接，也可以通过变扣接头分别与两端的油管连接；The parallel hole type flow controller has threads at both ends, and can be directly connected with the oil pipes of the horizontal well water cone control pipe column at both ends, or can be connected to the oil pipes at both ends through the variable buckle joint;
平行孔道式流量控制器通过节流小孔道的孔径，节流小孔道的数量和小孔道内端安装的喷嘴和堵头实现对流动阻力的控制。The parallel-channel flow controller controls the flow resistance by the orifice of the orifice, the number of orifices, and the nozzles and plugs installed at the inner end of the orifice.
为更好的描述本发明实施方式，现结合附图对本发明的具体实施方式进行说明：To better describe the embodiments of the present invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings:
如图1、图2、图3所示，为本发明实施例所提供平行孔道式流量控制器的结构示意图，包括：流体主孔道1、节流小孔道2、平行孔道式流量控制器一端的外螺纹3、平行孔道式流量控制器另一端的内螺纹4，其中：As shown in FIG. 1 , FIG. 2 and FIG. 3 , FIG. 1 is a schematic structural diagram of a parallel-channel flow controller according to an embodiment of the present invention, including: a main flow channel 1 , a small orifice 2 , and a parallel flow channel flow controller. External thread 3, internal thread 4 of the other end of the parallel channel flow controller, where:
平行孔道式流量控制器的节流小孔道2内端设置有内螺纹6，该内螺纹6用于安装节流喷嘴5，需要封堵节流小孔道2时，节流喷嘴5采用堵头方式；The inner end of the throttle orifice 2 of the parallel-channel flow controller is provided with an internal thread 6 for mounting the throttle nozzle 5, and when the throttle orifice 2 needs to be blocked, the throttle nozzle 5 is blocked. Head mode
平行孔道式流量控制器在安装操作过程中，根据流量控制的技术要求，对特定位置的流量控制器设定相应的水力参数，应注意对位安装，避免在节流小孔道部位打紧扣钳。另外，在具体实现过程中，平行孔道式流量控制器的安装是通过油管连接到水平井水锥控制管柱中，平行孔道式流量控制器可以与油管分别直接连接，需要时也可以通过变扣接头分别与两端的油管连接，以完成实施作业。Parallel channel flow controllers set corresponding hydraulic parameters for flow controllers at specific locations according to the technical requirements of flow control during installation and operation. Pay attention to the alignment installation to avoid tightening the buckles in the small orifices. clamp. In addition, in the specific implementation process, the parallel channel type flow controller is installed through the oil pipe to the horizontal well water cone control pipe column, and the parallel hole type flow controller can be directly connected with the oil pipe, and can also be buckled when needed. The joints are respectively connected to the oil pipes at both ends to complete the implementation work.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明披露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求书的保护范围为准。The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope of the present disclosure. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims (4)

  1. 一种平行孔道式流量控制器，包括流体主孔道，其特征在于，所述流体主孔道的外周平行分布有一个或多个节流小孔道，所述节流小孔道内端安装有节流喷嘴。A parallel-channel flow controller includes a fluid main channel, wherein the outer circumference of the fluid main channel is parallelly distributed with one or more throttle small holes, and the inner end of the throttle small hole is throttled nozzle.
  2. 根据权利要求1所述的平行孔道式流量控制器，其特征在于，所述节流喷嘴设有通孔或盲孔。The parallel-channel flow controller according to claim 1, wherein the throttle nozzle is provided with a through hole or a blind hole.
  3. 根据权利要求2所述的平行孔道式流量控制器，其特征在于，所述节流喷嘴与所述节流小孔道螺纹配合。The parallel-channel flow controller of claim 2 wherein said throttle nozzle is threadedly engaged with said throttle orifice.
  4. 根据权利要求1至3任一项所述的平行孔道式流量控制器，其特征在于，该流量控制器两端分别设有螺纹，并分别与水平井水锥控制管柱的油管连接。The parallel-channel flow controller according to any one of claims 1 to 3, characterized in that the flow controller is respectively provided with threads at both ends, and is respectively connected with the oil pipe of the horizontal well water cone control pipe string.
PCT/CN2011/072159 2011-03-11 2011-03-25 Parallel passage-typed flow controller WO2012122720A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110059757.4A CN102155203A (en) 2011-03-11 2011-03-11 Water cone controlled parallel canal type flow controller
CN201110059757.4 2011-03-11

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CN105148630A (en) * 2015-09-28 2015-12-16 江苏工程职业技术学院 Combined flat cleaning spray head with adjustable water pressure and used for textile dust filtering gauze and application thereof
CN106121597A (en) * 2016-08-26 2016-11-16 陕西汇丰悦石油科技开发有限公司 The nozzle carrier of holographic formula reducer and nozzle

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US3180415A (en) * 1963-06-03 1965-04-27 Texaco Inc Oil well treatment to overcome water coning
US20020189815A1 (en) * 2001-06-12 2002-12-19 Johnson Craig D. Flow control regulation method and apparatus
CN101655007A (en) * 2009-07-27 2010-02-24 熊友明 Well completion technique for efficiently controlling pressure and retaining water cone of horizontal well
CN201588608U (en) * 2010-01-05 2010-09-22 中国海洋石油总公司 Flow control screen pipe
CN201588614U (en) * 2009-12-28 2010-09-22 思达斯易能源技术(集团)有限公司 Axial inserting and axial current-limiting type choke holder and balanced sieve tube with same
CN101915087A (en) * 2010-08-23 2010-12-15 中国石油集团西部钻探工程有限公司 Sieve tube water control device

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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180415A (en) * 1963-06-03 1965-04-27 Texaco Inc Oil well treatment to overcome water coning
US20020189815A1 (en) * 2001-06-12 2002-12-19 Johnson Craig D. Flow control regulation method and apparatus
CN101655007A (en) * 2009-07-27 2010-02-24 熊友明 Well completion technique for efficiently controlling pressure and retaining water cone of horizontal well
CN201588614U (en) * 2009-12-28 2010-09-22 思达斯易能源技术(集团)有限公司 Axial inserting and axial current-limiting type choke holder and balanced sieve tube with same
CN201588608U (en) * 2010-01-05 2010-09-22 中国海洋石油总公司 Flow control screen pipe
CN101915087A (en) * 2010-08-23 2010-12-15 中国石油集团西部钻探工程有限公司 Sieve tube water control device

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