WO2021127767A1 - Concentric mandrel for intermittent gas lift with accumulation chamber - Google Patents
Concentric mandrel for intermittent gas lift with accumulation chamber Download PDFInfo
- Publication number
- WO2021127767A1 WO2021127767A1 PCT/BR2020/050565 BR2020050565W WO2021127767A1 WO 2021127767 A1 WO2021127767 A1 WO 2021127767A1 BR 2020050565 W BR2020050565 W BR 2020050565W WO 2021127767 A1 WO2021127767 A1 WO 2021127767A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- concentric
- mandrel
- gas
- accumulation chamber
- wells
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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
- 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
- E21B43/122—Gas lift
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/03—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
-
- 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
-
- 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
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- 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
- E21B43/122—Gas lift
- E21B43/123—Gas lift valves
Definitions
- the elevation system proposed here is intended for wells with very low static pressure (close to the head pressure) that operate with intermittent pneumatic elevation.
- the pneumatic intermittent wells are traditionally equipped with obturator (packer), foot valve (standing-valve) and gas-lift valve that is positioned above the obturator.
- This type of installation provides a relatively low flow pressure, but it can reduce or even prevent the production of wells with very low static pressure.
- the use of an insertable chamber is an alternative to overcome this problem, but it had the inconvenience of not allowing the replacement of the gas-lift valve with a wire unit (without probe intervention).
- the document GB2257449A discloses a production system for a subsea well that includes a concentric gas-lift line and a production column, both located within a production riser.
- a gas lift chuck, and associated apparatus, are provided on the pipe hanger to allow gas to be selectively directed downward to a lower gas-lift valve located deeper within the well.
- the document US5785124A discloses a method to increase the production of an oil well.
- the method comprises the steps of installing a venturi device inside the well, where the venturi can be associated with a gas-lift chuck located in the well.
- Document W01996007813A1 discloses a gas flow control device for injecting gas into a production column to recover pressure and reduce friction losses so that critical flow can be achieved at low pressures and at production pressures higher.
- a Venturi is used on the side pocket chuck so that the Venturi flow path is coaxially aligned with the nozzle flow path to provide a continuous flow path.
- the invention presents a concentric mandrel and hanger, which uses the same gas-lift valve used in side bag mandrel.
- the application of the invention is proposed for wells with very low static pressure that operate with intermittent pneumatic elevation, enabling production in these wells.
- the development of the concentric mandrel and the respective macarroni hanger (1) allows the use of an insertable accumulation chamber, and at the same time allows the replacement of the gas-lift valve to be carried out with a wire unit, thus avoiding probe interventions, which are more costly and time-consuming.
- FIG. 1 illustrates the concentric chuck with pneumatic lift valve installed.
- FIG. 2 illustrates a well equipped with an insertable chamber with a concentric mandrel.
- FIG. 3 illustrates the suspender nipple of the macarroni tube
- FIG. 4 illustrates a sectional view of the concentric mandrel.
- the hanger (3) is lowered together with the macarroni tubes (1) during the probe intervention, being installed in the recess of the tube sleeve (2) with NU or EU thread.
- the concentric mandrel (8) is coupled just above the hanger (3) and snaps into it during the threading of the connection.
- the bottom assembly has the following elements: Concentric Nipple (8) for 1.1/2 in. gas-lift valve (5) and Suspender Nipple (3) for 1,315 in. NU pipe column ( 12);
- FIG. 1 illustrates the concentric chuck (8) with gas-lift valve (5) installed.
- the inlet of the gas from the ring (13) occurs through the side (6) and the outlet from below.
- Figure 2 illustrates a well equipped with insertable chamber (14) with concentric chuck (8).
- the gas flow passing through the pneumatic lifting valve (20) pushes the liquid that initially passes through the concentric mandrel (8) and (22) itself and then rises to the surface;
- FIG. 3 illustrates the suspender nipple (3) of the macarroni tube (1) that is installed below the concentric mandrel (8).
- this hanger (3) has an upper seal that attaches to the mandrel and has side holes (21) to allow the passage of liquid and gas during the lifting phase;
- Figure 4 illustrates a sectional view of the concentric chuck.
- the gas-lift valve (5) and peripheral annular space (21) the passage of liquid and gas during the ascent occurs;
Landscapes
- 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)
- Load-Engaging Elements For Cranes (AREA)
- Lift Valve (AREA)
Abstract
Description
“MANDRIL CONCÊNTRICO PARA ELEVAÇÃO PNEUMÁTICA INTERMITENTE COM CÂMARA DE ACUMULAÇÃO” "CONCENTRIC MANDRIL FOR INTERMITTENT PNEUMATIC LIFTING WITH ACCUMULATION CHAMBER"
Campo da Invenção Field of Invention
[0001] O sistema de elevação aqui proposto é destinado a poços com baixíssima pressão estática (próxima à pressão de cabeça) que operam com elevação pneumática intermitente. [0001] The elevation system proposed here is intended for wells with very low static pressure (close to the head pressure) that operate with intermittent pneumatic elevation.
Descrição do Estado da Técnica Description of the State of the Art
[0002] Os poços pneumáticos intermitentes são equipados de forma tradicional com obturador ( packer ), válvula de pé ( standing-valve ) e válvula de gás-lift que é posicionada acima do obturador. Este tipo de instalação proporciona uma pressão de fluxo relativamente baixa, mas que pode reduzir ou mesmo impedir a produção de poços com pressão estática muito baixa. O uso de câmara insertável é uma alternativa para contornar este problema, mas apresentava o inconveniente de não permitir a troca da válvula de gás-lift com unidade de arame (sem intervenção de sonda). [0002] The pneumatic intermittent wells are traditionally equipped with obturator (packer), foot valve (standing-valve) and gas-lift valve that is positioned above the obturator. This type of installation provides a relatively low flow pressure, but it can reduce or even prevent the production of wells with very low static pressure. The use of an insertable chamber is an alternative to overcome this problem, but it had the inconvenience of not allowing the replacement of the gas-lift valve with a wire unit (without probe intervention).
[0003] Um dos inconvenientes da utilização de métodos pneumáticos na elevação artificial de poços de petróleo é a dificuldade para reduzir a pressão de fundo em fluxo, o que restringe o seu uso a poços de pressão estática razoável. Neste sentido, os métodos pneumáticos intermitentes como o GLI ou GLP, embora restritos a poços de baixa vazão, representam um avanço em relação ao GLC, por proporcionarem uma pressão de fundo mais reduzida, mas ainda assim superior à que pode ser obtida por métodos bombeados, onde teoricamente é possível operar com pressão de fundo igual à pressão de cabeça. O uso de câmara de acumulação insertável, associada ao GLI, onde o liquido pode ser acumulado inclusive abaixo dos canhoneados, permite reduzir a pressão de fundo ao nível dos métodos bombeados, possibilitando assim a maximização da produção do poço. Uma das limitações deste método é o uso de mandris convencionais ou de bolsa lateral abaixo do suspensor do tubo macarroni, o que impede que a válvula operadora seja substituída com unidade de arame. [0004] O documento GB2257449A revela um sistema de produção para um poço submarino que inclui uma linha de gás-lift concêntrico e uma coluna de produção, ambas localizadas dentro de um riser de produção. Um mandril de elevação de gás, e aparelhos associados, são fornecidos no suspensor de tubulação para permitir que o gás seja direcionado seletivamente para baixo até uma válvula de gás-lift mais baixa localizada mais profundamente dentro do poço. [0003] One of the inconveniences of using pneumatic methods in the artificial elevation of oil wells is the difficulty to reduce the bottom pressure in flow, which restricts its use to wells with reasonable static pressure. In this sense, intermittent pneumatic methods such as GLI or LPG, although restricted to low flow wells, represent an advance in relation to GLC, as they provide a lower bottom pressure, but still higher than that which can be obtained by pumped methods , where theoretically it is possible to operate with a background pressure equal to the head pressure. The use of an insertable accumulation chamber, associated with the GLI, where the liquid can be accumulated even below the perforations, allows to reduce the bottom pressure at the level of the pumped methods, thus enabling the maximization of the well's production. One of the limitations of this method is the use of conventional chucks or a side bag below the macarroni tube hanger, which prevents the operator valve from being replaced with a wire unit. [0004] The document GB2257449A discloses a production system for a subsea well that includes a concentric gas-lift line and a production column, both located within a production riser. A gas lift chuck, and associated apparatus, are provided on the pipe hanger to allow gas to be selectively directed downward to a lower gas-lift valve located deeper within the well.
[0005] O documento US5785124A revela um método para aumentar a produção de um poço de petróleo. O método compreende as etapas de instalação de um dispositivo venturi dentro do poço, onde o venturi pode ser associado a um mandril de gás-lift localizado no poço. [0005] The document US5785124A discloses a method to increase the production of an oil well. The method comprises the steps of installing a venturi device inside the well, where the venturi can be associated with a gas-lift chuck located in the well.
[0006] O documento W01996007813A1 revela um dispositivo de controle de fluxo de gás para injetar gás numa coluna de produção para recuperar a pressão e reduzir as perdas por atrito, de modo que o fluxo crítico possa ser alcançado a baixas pressões e a pressões de produção mais elevadas. Um Venturi é utilizado no mandril de bolso lateral para que caminho de fluxo do Venturi seja coaxialmente alinhado com o caminho de fluxo do bico para fornecer um caminho de fluxo contínuo. [0006] Document W01996007813A1 discloses a gas flow control device for injecting gas into a production column to recover pressure and reduce friction losses so that critical flow can be achieved at low pressures and at production pressures higher. A Venturi is used on the side pocket chuck so that the Venturi flow path is coaxially aligned with the nozzle flow path to provide a continuous flow path.
[0007] O estado da técnica citado acima, não possui as características únicas que serão apresentadas detalhadamente a seguir. [0007] The state of the art mentioned above does not have the unique characteristics that will be presented in detail below.
Descrição Resumida da Invenção Brief Description of the Invention
[0008] A invenção apresenta um mandril concêntrico e suspensor, que utiliza a mesma válvula de gás-lift utilizada em mandril de bolsa lateral. A aplicação da invenção é proposta para poços com baixíssima pressão estática que operam com elevação pneumática intermitente, viabilizando a produção nesses poços. [0009] O desenvolvimento de mandril concêntrico e do respectivo suspensor de macarroni (1 ), possibilita a utilização de câmara de acumulação insertável, e ao mesmo tempo permite que a substituição da válvula de gás-lift seja efetuada com unidade de arame, evitando assim intervenções de sonda, que são mais onerosas e demoradas. Breve Descrição dos Desenhos [0008] The invention presents a concentric mandrel and hanger, which uses the same gas-lift valve used in side bag mandrel. The application of the invention is proposed for wells with very low static pressure that operate with intermittent pneumatic elevation, enabling production in these wells. [0009] The development of the concentric mandrel and the respective macarroni hanger (1), allows the use of an insertable accumulation chamber, and at the same time allows the replacement of the gas-lift valve to be carried out with a wire unit, thus avoiding probe interventions, which are more costly and time-consuming. Brief Description of Drawings
[0010] A presente invenção será descrita com mais detalhes a seguir, com referência às figuras em anexo que, de uma forma esquemática e não limitativa do escopo inventivo, representam exemplos de realização da mesma. Nos desenhos, têm-se: [0010] The present invention will be described in more detail below, with reference to the attached figures which, in a schematic and not limiting of the inventive scope, represent examples of its realization. In the drawings, there are:
- A Figura 1 ilustra o mandril concêntrico com válvula de elevação pneumática instalada. - Figure 1 illustrates the concentric chuck with pneumatic lift valve installed.
- A Figura 2 ilustra um poço equipado com câmara insertável com mandril concêntrico. - Figure 2 illustrates a well equipped with an insertable chamber with a concentric mandrel.
- A Figura 3 ilustra o niple suspensor do tubo macarroni; - Figure 3 illustrates the suspender nipple of the macarroni tube;
- A Figura 4 ilustra uma vista com seção do mandril concêntrico. - Figure 4 illustrates a sectional view of the concentric mandrel.
Descrição Detalhada da Invenção Detailed Description of the Invention
[0011] Foi desenvolvido um projeto inovador de mandril concêntrico (8) e suspensor (3), que utiliza a mesma válvula de gás-lift (5) utilizada em mandril de bolsa lateral. O mandril (8) é instalado na coluna de produção logo acima do obturador (16) e se acopla ao suspensor (3) de tubo macarroni (1 ) que é instalado logo abaixo do mandril concêntrico (8). O tubo macarroni (1) é um tubo de produção, normalmente de pequeno diâmetro, e se prolonga até bem abaixo do obturador (16) abaixo do qual é instalada a câmara de acumulação (14), constituída de tubos de produção de grande diâmetro (4), para acumular a golfada de liquido. Na extremidade desta câmara de acumulação (14) é instalada a válvula de pé (15). O desenvolvimento do mandril concêntrico permite o uso de câmara de acumulação de uma forma inovadora e com mais confiabilidade operacional [0011] An innovative design of concentric mandrel (8) and hanger (3) was developed, which uses the same gas-lift valve (5) used in a lateral bag mandrel. The mandrel (8) is installed in the production column just above the shutter (16) and is coupled to the macarroni tube hanger (3) (1) which is installed just below the concentric mandrel (8). The macarroni tube (1) is a production tube, usually of small diameter, and extends well below the shutter (16) below which the accumulation chamber (14) is installed, consisting of large diameter production tubes ( 4), to accumulate the slug of liquid. At the end of this accumulation chamber (14) the foot valve (15) is installed. The development of the concentric mandrel allows the use of the accumulation chamber in an innovative way and with more operational reliability
[0012] O suspensor (3) é descido juntamente com os tubos macarroni (1) durante a intervenção de sonda, sendo instalado no recesso da luva do tubo (2) com rosca NU ou EU. O mandril concêntrico (8) é acoplado logo acima do suspensor (3) se encaixando neste durante o enroscamento da conexão. [0013] O conjunto de fundo possui os seguintes elementos: Niple (mandril) concêntrico (8) para válvula de gás-lift (5) de 1.1/2 pol e Niple suspensor (3) para coluna de tubo 1 ,315 pol NU (12); [0012] The hanger (3) is lowered together with the macarroni tubes (1) during the probe intervention, being installed in the recess of the tube sleeve (2) with NU or EU thread. The concentric mandrel (8) is coupled just above the hanger (3) and snaps into it during the threading of the connection. [0013] The bottom assembly has the following elements: Concentric Nipple (8) for 1.1/2 in. gas-lift valve (5) and Suspender Nipple (3) for 1,315 in. NU pipe column ( 12);
[0014] -A Figura 1 ilustra o mandril concêntrico (8) com válvula de gás-lift (5) instalada. A entrada do gás do anular (13) ocorre pela lateral (6) e a saída por baixo. [0014] -Figure 1 illustrates the concentric chuck (8) with gas-lift valve (5) installed. The inlet of the gas from the ring (13) occurs through the side (6) and the outlet from below.
[0015] A Figura 2 ilustra um poço equipado com câmara insertável (14) com mandril concêntrico (8). O fluxo de gás que passa pela válvula de elevação pneumática (20) empurra o líquido que passa inicialmente pelo próprio mandril concêntrico (8) e (22) e depois sobe até a superfície; [0015] Figure 2 illustrates a well equipped with insertable chamber (14) with concentric chuck (8). The gas flow passing through the pneumatic lifting valve (20) pushes the liquid that initially passes through the concentric mandrel (8) and (22) itself and then rises to the surface;
[0016] - A Figura 3 ilustra o niple suspensor (3) do tubo macarroni (1) que é instalado abaixo do mandril concêntrico (8). Além de suportar o peso do macarroni (1), este suspensor (3) possui uma vedação superior que se acopla ao mandril e possui furos laterais (21) para permitir a passagem do líquido e do gás durante a fase de elevação; [0016] - Figure 3 illustrates the suspender nipple (3) of the macarroni tube (1) that is installed below the concentric mandrel (8). In addition to supporting the weight of the macarroni (1), this hanger (3) has an upper seal that attaches to the mandrel and has side holes (21) to allow the passage of liquid and gas during the lifting phase;
[0017] A Figura 4 ilustra uma vista com seção do mandril concêntrico. No centro é alojada a válvula de gás-lift (5) e espaço anular periférico (21) ocorre a passagem do líquido e do gás durante a subida; [0017] Figure 4 illustrates a sectional view of the concentric chuck. In the center is housed the gas-lift valve (5) and peripheral annular space (21) the passage of liquid and gas during the ascent occurs;
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/789,386 US20230032294A1 (en) | 2019-12-27 | 2020-12-18 | Concentric mandrel for intermittent gas lift with accumulation chamber |
| MX2022008052A MX2022008052A (en) | 2019-12-27 | 2020-12-18 | Concentric mandrel for intermittent gas lift with accumulation chamber. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR102019028102-2A BR102019028102B1 (en) | 2019-12-27 | CONCENTRIC MANDREL FOR INTERMITTENT PNEUMATIC LIFTING WITH ACCUMULATION CHAMBER | |
| BRBR1020190281022 | 2019-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021127767A1 true WO2021127767A1 (en) | 2021-07-01 |
Family
ID=76572830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2020/050565 Ceased WO2021127767A1 (en) | 2019-12-27 | 2020-12-18 | Concentric mandrel for intermittent gas lift with accumulation chamber |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20230032294A1 (en) |
| MX (1) | MX2022008052A (en) |
| WO (1) | WO2021127767A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2257449A (en) * | 1991-07-10 | 1993-01-13 | Conoco Inc | Oil well production system. |
| WO1996007813A1 (en) * | 1994-09-07 | 1996-03-14 | Halliburton Company | Gas lift flow control device |
| US5785124A (en) * | 1996-07-12 | 1998-07-28 | Production On Accelerators, Inc. | Method for accelerating production |
-
2020
- 2020-12-18 MX MX2022008052A patent/MX2022008052A/en unknown
- 2020-12-18 WO PCT/BR2020/050565 patent/WO2021127767A1/en not_active Ceased
- 2020-12-18 US US17/789,386 patent/US20230032294A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2257449A (en) * | 1991-07-10 | 1993-01-13 | Conoco Inc | Oil well production system. |
| WO1996007813A1 (en) * | 1994-09-07 | 1996-03-14 | Halliburton Company | Gas lift flow control device |
| US5785124A (en) * | 1996-07-12 | 1998-07-28 | Production On Accelerators, Inc. | Method for accelerating production |
Also Published As
| Publication number | Publication date |
|---|---|
| MX2022008052A (en) | 2022-09-26 |
| US20230032294A1 (en) | 2023-02-02 |
| BR102019028102A2 (en) | 2021-07-06 |
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