WO2012177179A2 - Downhole pump assembly - Google Patents

Downhole pump assembly Download PDF

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Publication number
WO2012177179A2
WO2012177179A2 PCT/RU2012/000471 RU2012000471W WO2012177179A2 WO 2012177179 A2 WO2012177179 A2 WO 2012177179A2 RU 2012000471 W RU2012000471 W RU 2012000471W WO 2012177179 A2 WO2012177179 A2 WO 2012177179A2
Authority
WO
WIPO (PCT)
Prior art keywords
pump
rod
plunger
downhole
rod string
Prior art date
Application number
PCT/RU2012/000471
Other languages
French (fr)
Russian (ru)
Other versions
WO2012177179A3 (en
Inventor
Ривенер Мусавирович ГАБДУЛЛИН
Original Assignee
Gabdullin Rivener Musavirovich
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gabdullin Rivener Musavirovich filed Critical Gabdullin Rivener Musavirovich
Priority to US14/128,611 priority Critical patent/US20140119965A1/en
Publication of WO2012177179A2 publication Critical patent/WO2012177179A2/en
Publication of WO2012177179A3 publication Critical patent/WO2012177179A3/en

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Classifications

    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • 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
    • 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
    • F04B47/026—Pull rods, full rod component parts

Definitions

  • Borehole pumping unit Field of the invention The invention relates to pumping technology used in oil production, in particular, to submersible borehole pumps for lifting formation fluid from deep wells with simultaneous and separate operation from two layers.
  • the closest to the invention in technical essence and the achieved result is a pumping unit for simultaneously separate operation of two layers, including a rocking machine, a column of lift pipes, a sucker rod pump, a packer, a shank, an additional rocking machine and an additional short column of lift pipes installed at a depth above the upper reservoir, a parallel anchor mounted on both columns of elevator pipes and above the upper reservoir, with a short column of elevator pipes equipped with shena additional sucker rod pump. (RU 49895 U1, 12/10/2005).
  • the well pump installation comprises a rod drive, upper and lower plunger well pumps, each connected to its own rod string, the installation being provided with a housing, a traverse and a common hollow rod string, the latter attached to the upper part of the crosshead, on which bottom mounted columns of rods of the upper and lower plunger borehole pumps, and the column of rods of the upper plunger borehole pump hollow and communicated with a hollow plunger of the upper plunger borehole pump and a channel made in the traverse, with a common hollow column of rods, and a column of rods of the lower plunger borehole pump is installed between the cylinder of the upper plunger borehole pump and the casing of the pump installation, the upper plunger borehole pump being offset relative to the longitudinal axis of the pump housing.
  • the rod string of the lower and / or upper plunger pumps may consist of one rod.
  • the axis of the lower plunger borehole pump may coincide with the axis of the pump installation, while the rod string of the lower plunger borehole pump between the traverse and the lower plunger pump is equipped with an asymmetric rod sub or the column of rods of the lower plunger borehole pump has an S-shaped bend.
  • the rod of the lower plunger pump attached to the traverse has a curved section, for example, flat, oval, sickle-shaped, etc. and its position relative to the beam is fixed.
  • the lower plunger pump can be offset relative to the axis of the pump installation in the opposite direction from the upper plunger borehole pump, while the housing of the installation is connected to the lower plunger borehole pump by means of a pipe asymmetric sub.
  • Centralizers can be mounted on the booms.
  • the pump installation allows you to work with one rocking machine with one lift column and one rod string with commercially available borehole plunger pumps, allowing you to choose your own size for each object.
  • the above advantages of the proposed pump installation can significantly increase the reliability and the overhaul period of the pump, and also expands the possibilities of working with two objects, and in the case of using the well as an elevator column, then with three objects.
  • Figure 1 presents a longitudinal section of the upper part of the downhole pumping unit.
  • Figure 2 - shows a longitudinal section of the lower part of the downhole pumping unit and the option of attaching the lower pump to the upper part through the rod sub of Fig.1.
  • Fig.Z - shows a longitudinal section of the lower part of the downhole pumping unit and the option of attaching the lower pump to the upper part through the S-shaped rod of Fig.1.
  • Figure 4 - shows a longitudinal section of the lower part of the downhole pumping unit and the option of attaching the lower pump to the upper part through the pipe sub of Fig.
  • Figure 5 - shows a cross section of a downhole pumping unit through the upper pump with a variant of the month-shaped cross-section of the rod of figure 1.
  • the pump installation consists of a housing 1, an upper plunger borehole pump 2, comprising a pump chamber 3 in a cylinder 4 s a suction valve 5 and a hollow plunger 6 with a discharge valve 7 in its lower part.
  • the plunger 6 is connected to a hollow column of rods 8 through a crosshead 9 with a common hollow column of rods 10.
  • the axis of the upper plunger downhole pump 2 is offset from the axis of the housing 1 of the pump unit.
  • a channel 11 is made connecting the cavity of the plunger 6 with the cavity of the common hollow column of the rods 10 ( Figure 1).
  • the crosshead 9 is connected to the upper end of the rod string 12 of the lower plunger well pump 13 (FIG.
  • the column of rods 12 is in a month-shaped cavity formed by the outer surface of the upper plunger borehole pump 2 and the inner surface of the housing 1, where it can make reciprocating movements.
  • the plunger 14 is located in the cylinder 15 and has a discharge valve 16 at its lower end.
  • a suction valve 17 is located in the cylinder 15 and is located in the pump chamber 18.
  • the pump chamber 3 of the upper plunger borehole pump 2 is connected to the annular space 19 through the inlet port 20 and the channel 21.
  • the pump chamber 18 of the lower plunger downhole pump 13 is connected to the annular space 22 through the inlet channel 23 ( Figure 2).
  • a packer is installed on body 1
  • the upper rod of the rod string 12 to be attached to the traverse 9 has a figured cross-section, for example, a month-shaped or trough-shaped, to correspond to the cavity section formed by the outer surface of the upper plunger well pump 2 and the inner surface of the installation casing 1 (Figure 5).
  • the inner diameter of the cross section of the crescent rod may correspond to the outer diameter of the upper plunger well pump 2
  • the outer diameter of the cross section of the crescent rod may correspond to the inner diameter of the housing 1 to reduce the likelihood of grinding.
  • a downhole pumping unit during simultaneous and separate operation of two layers of a well works as follows.
  • the total column of hollow rods 10 moves up, dragging the plunger 6 the upper plunger well pump 2 and the plunger 14 of the lower plunger well pump 13.
  • a vacuum is created in the pump chamber 3 of the upper plunger well pump 2 and in the pump chamber 18 of the lower plunger well pump 13.
  • Valves 5 and 17 open and fluid begins to flow from the annulus 19 into the pump chamber 3 of the upper plunger downhole pump 2 and from the annular space 22 into the pump chamber 18 of the lower plunger downhole pump 13 because after the pumping unit was lowered into the well, the packer 26 was brought into working condition and divided the annulus of the well into two parts 19 and 22, respectively.
  • Valves 5 and 17 are closed, and the pressure of the compressible fluid in the pump chambers 3 and 18 opens the valves 7 and 16 and there is a bypass fluid from the pump chamber 3 into the cavity of the plunger 6 and further along the common column of hollow rods 10 at the wellhead and from the pump chamber 18 into the cavity of the plunger 14 and further into the housing 1 of the installation and then along the lift string (not shown in the drawing) at the wellhead.
  • the cycle of the pumps and the installation itself is repeated.
  • the present invention can be used in the oil and other industries in the production of various liquid media from wells.

Abstract

The invention relates to pump technology used in oil extraction and, in particular, to submersible downhole rod pumps for the simultaneous but separate lifting of formation fluid during the production of two formations in a single well. The downhole pump assembly comprises a drive, and an upper and a lower downhole piston pump, each connected to its own rod string. The pump assembly is also equipped with a housing, a yoke and a common hollow rod string, the latter being secured to the upper part of the yoke, to which the rod strings of the upper and lower downhole piston pumps are fastened from below, wherein the rod string of the upper downhole piston pump is hollow and communicates with the hollow piston of the upper downhole piston pump and with a conduit provided in the yoke, as well as with the common hollow rod string, and the rod string of the lower downhole piston pump is mounted between the cylinder of the upper downhole piston pump and the pump assembly housing, the upper downhole piston pump being offset from the longitudinal axis of the pump assembly housing. The alignment of the lower downhole piston pump is achieved by means of a rod crossover, an S-shaped rod or an asymmetrical pipe crossover. The rod of the lower piston pump has a profiled cross-section. The result is that a single standard drive and two piston pumps are used and the operating reliability of the submersible piston pump is increased and the time between overhaul is extended.

Description

Скважинная насосная установка Область техники Изобретение относится насосной технике используемой при добыче нефти, в частности, к погружным скважинным насосам для подъема пластовой жидкости из глубоких скважин с одновременно-раздельной эксплуатацией из двух пластов.  Borehole pumping unit Field of the invention The invention relates to pumping technology used in oil production, in particular, to submersible borehole pumps for lifting formation fluid from deep wells with simultaneous and separate operation from two layers.
Предшествующий уровень техники  State of the art
Наиболее близким к изобретению по технической сущности и достигаемому результату является насосная установка для одновременно раздельной эксплуатации двух пластов, включающая станок-качалку, колонну лифтовых труб, штанговый насос, пакер, хвостовик, дополнительный станок-качалку и дополнительную короткую колонну лифтовых труб, установленную на глубину выше верхнего продуктивного пласта, параллельный якорь, установленный на обеих колоннах лифтовых труб и выше верхнего продуктивного пласта, при этом короткая колонна лифтовых труб оснащена дополнительным штанговым насосом. (RU 49895 U1, 10.12.2005). The closest to the invention in technical essence and the achieved result is a pumping unit for simultaneously separate operation of two layers, including a rocking machine, a column of lift pipes, a sucker rod pump, a packer, a shank, an additional rocking machine and an additional short column of lift pipes installed at a depth above the upper reservoir, a parallel anchor mounted on both columns of elevator pipes and above the upper reservoir, with a short column of elevator pipes equipped with shena additional sucker rod pump. (RU 49895 U1, 12/10/2005).
В известном устройстве необходимо иметь два станка-качалки, два штанговых привода, а также две колонны лифтовых труб и якорь. Спуск и подъем двух лифтовых колонн сопряжен с большими трудовыми затратами, технологическими сложностями и потерями времени. Перед проведением работ на скважине необходим демонтаж, как минимум, одного станка- качалки на поверхности, а после проведения работ его монтаж. Кроме того, использование двух станков-качалок, двух лифтовых колонн, двух штанговых колонн и якоря увеличивает вдвое финансовые затраты. Задачей, на решение которой направлено настоящее изобретение, является применение серийного привода установки и двух серийных плунжерных насосов. Технический результат заключается в повышении надежности работы насосной установки и увеличение межремонтного периода работы. In the known device, it is necessary to have two rocking machines, two rod drives, as well as two columns of elevator pipes and an anchor. The descent and lifting of two elevator columns is associated with high labor costs, technological difficulties and loss of time. Before carrying out work on the well, it is necessary to dismantle at least one rocking machine on the surface, and after carrying out the installation. In addition, the use of two rocking machines, two lift columns, two rod columns and an anchor doubles financial costs. The problem to which the present invention is directed is the use of a serial drive of the installation and two serial plunger pumps. The technical result consists in increasing the reliability of the pumping unit and increasing the overhaul period.
Раскрытие изобретения Указанная задача решается, а технический результат достигается за счет того, что скважинная насосная установка содержит штанговый привод, верхний и нижний плунжерные скважинные насосы, связанный каждый со своей колонной штанг, при этом установка снабжена корпусом, траверсой и общей полой колонной штанг, последняя прикреплена к верхней части траверсы, на которой снизу закреплены колонны штанг верхнего и нижнего плунжерных скважинных насосов, причем колонна штанг верхнего плунжерного скважинного насоса выполнена полой и сообщена с полым плунжером верхнего плунжерного скважинного насоса и каналом, выполненным в траверсе, с общей полой колонной штанг, а колонна штанг нижнего плунжерного скважинного насоса установлена между цилиндром верхнего плунжерного скважинного насоса и корпусом насосной установки, причем верхний плунжерный скважинный насос смещен относительно продольной оси корпуса насосной установки.  SUMMARY OF THE INVENTION This problem is solved, and the technical result is achieved due to the fact that the well pump installation comprises a rod drive, upper and lower plunger well pumps, each connected to its own rod string, the installation being provided with a housing, a traverse and a common hollow rod string, the latter attached to the upper part of the crosshead, on which bottom mounted columns of rods of the upper and lower plunger borehole pumps, and the column of rods of the upper plunger borehole pump hollow and communicated with a hollow plunger of the upper plunger borehole pump and a channel made in the traverse, with a common hollow column of rods, and a column of rods of the lower plunger borehole pump is installed between the cylinder of the upper plunger borehole pump and the casing of the pump installation, the upper plunger borehole pump being offset relative to the longitudinal axis of the pump housing.
Колонна штанг нижнего и/или верхнего плунжерных насосов может состоять из одной штанги.  The rod string of the lower and / or upper plunger pumps may consist of one rod.
Ось нижнего плунжерного скважинного насоса может совпадать с осью насосной установки, при этом колонна штанг нижнего плунжерного скважинного насоса между траверсой и нижним плунжерным насосом снабжена ассиметричным штанговым переводником или колонна штанг нижнего плунжерного скважинного насоса имеет S-образный изгиб.  The axis of the lower plunger borehole pump may coincide with the axis of the pump installation, while the rod string of the lower plunger borehole pump between the traverse and the lower plunger pump is equipped with an asymmetric rod sub or the column of rods of the lower plunger borehole pump has an S-shaped bend.
Штанга нижнего плунжерного насоса присоединяемая к траверсе, имеет фигурное сечение, например плоское, овальное, серпообразное и т.д. и ее положение относительно траверсы фиксируется.  The rod of the lower plunger pump attached to the traverse has a curved section, for example, flat, oval, sickle-shaped, etc. and its position relative to the beam is fixed.
Нижний плунжерный насос может быть смещен относительно оси насосной установки в противоположную сторону от верхнего плунжерного скважинного насоса, при этом корпус установки соединен с нижним плунжерным скважинным насосом посредством трубного ассиметричного переводника. The lower plunger pump can be offset relative to the axis of the pump installation in the opposite direction from the upper plunger borehole pump, while the housing of the installation is connected to the lower plunger borehole pump by means of a pipe asymmetric sub.
На штангах могут быть установлены центраторы.  Centralizers can be mounted on the booms.
Насосная установка позволяет работать с одним станком-качалкой с одной лифтовой колонной и одной колонной штанг с серийно выпускаемыми скважинными плунжерными насосами позволяя подбирать для каждого объекта свой типоразмер. Вышеперечисленные преимущества предлагаемого насосной установки позволяют намного увеличить надежность и межремонтный период насоса, а также, расширяет возможности работы с двумя объектами, а в случае применения самой скважины как лифтовой колонны, то и с тремя объектами.  The pump installation allows you to work with one rocking machine with one lift column and one rod string with commercially available borehole plunger pumps, allowing you to choose your own size for each object. The above advantages of the proposed pump installation can significantly increase the reliability and the overhaul period of the pump, and also expands the possibilities of working with two objects, and in the case of using the well as an elevator column, then with three objects.
Краткое описание чертежей  Brief Description of the Drawings
На фиг.1 представлен продольный разрез верхней части скважинной насосной установки. Figure 1 presents a longitudinal section of the upper part of the downhole pumping unit.
На фиг.2 - представлен продольный разрез нижней части скважинной насосной установки и вариант присоединения нижнего насоса к верхней части через штанговый переводник по фиг.1.  Figure 2 - shows a longitudinal section of the lower part of the downhole pumping unit and the option of attaching the lower pump to the upper part through the rod sub of Fig.1.
На фиг.З - представлен продольный разрез нижней части скважинной насосной установки и вариант присоединения нижнего насоса к верхней части через S -образную штангу по фиг.1.  In Fig.Z - shows a longitudinal section of the lower part of the downhole pumping unit and the option of attaching the lower pump to the upper part through the S-shaped rod of Fig.1.
На фиг.4 - представлен продольный разрез нижней части скважинной насосной установки и вариант присоединения нижнего насоса к верхней части через трубный переводник по фиг.1.  Figure 4 - shows a longitudinal section of the lower part of the downhole pumping unit and the option of attaching the lower pump to the upper part through the pipe sub of Fig.
На фиг.5 - представлен поперечный разрез скважинной насосной установки через верхний насос с вариантом месяцеобразного сечения штанги по фиг.1.  Figure 5 - shows a cross section of a downhole pumping unit through the upper pump with a variant of the month-shaped cross-section of the rod of figure 1.
Лучший вариант осуществления изобретения The best embodiment of the invention
Насосная установка состоит из корпуса 1, верхнего плунжерного скважинного насоса 2, содержащего насосную камеру 3 в цилиндре 4 с всасывающим клапаном 5 и полый плунжер 6 с нагнетательным клапаном 7 в своей нижней части. Плунжер 6 соединен с выполненной полой колонной штанг 8 через траверсу 9 с общей полой колонной штанг 10. Ось верхнего плунжерного скважинного насоса 2 смещена от оси корпуса 1 насосной установки. В траверсе 9 выполнен канал 11, соединяющий полость плунжера 6 с полостью общей полой колонны штанг 10 (Фиг.1). Кроме того, траверса 9 соединена с верхним концом колонны штанг 12 нижнего плунжерного скважинного насоса 13 (Фиг.2), нижний конец которой присоединен, в свою очередь, к выполненному полым плунжеру 14 нижнего плунжерного скважинного насоса 13. Колонна штанг 12 находится в месяцеобразной полости, образованной наружной поверхностью верхнего плунжерного скважинного насоса 2 и внутренней поверхностью корпуса 1, где может совершать возвратно-поступательные движения. Плунжер 14 расположен в цилиндре 15 и имеет на своем нижнем конце нагнетательный клапан 16. В цилиндре 15 установлен всасывающий клапан 17 находящийся в насосной камере 18. Насосная камера 3 верхнего плунжерного скважинного насоса 2 соединена с затрубным пространством 19 через впускное окно 20 и канал 21. Насосная камера 18 нижнего плунжерного скважинного насоса 13 соединена с затрубным пространством 22 через впускной канал 23 (Фиг.2). В скважине имеются верхний продуктивный пласт 24 и нижний продуктивный пласт 25. На корпусе 1 установлен пакерThe pump installation consists of a housing 1, an upper plunger borehole pump 2, comprising a pump chamber 3 in a cylinder 4 s a suction valve 5 and a hollow plunger 6 with a discharge valve 7 in its lower part. The plunger 6 is connected to a hollow column of rods 8 through a crosshead 9 with a common hollow column of rods 10. The axis of the upper plunger downhole pump 2 is offset from the axis of the housing 1 of the pump unit. In the traverse 9, a channel 11 is made connecting the cavity of the plunger 6 with the cavity of the common hollow column of the rods 10 (Figure 1). In addition, the crosshead 9 is connected to the upper end of the rod string 12 of the lower plunger well pump 13 (FIG. 2), the lower end of which is connected, in turn, to the hollow plunger 14 of the lower plunger well pump 13. The column of rods 12 is in a month-shaped cavity formed by the outer surface of the upper plunger borehole pump 2 and the inner surface of the housing 1, where it can make reciprocating movements. The plunger 14 is located in the cylinder 15 and has a discharge valve 16 at its lower end. A suction valve 17 is located in the cylinder 15 and is located in the pump chamber 18. The pump chamber 3 of the upper plunger borehole pump 2 is connected to the annular space 19 through the inlet port 20 and the channel 21. The pump chamber 18 of the lower plunger downhole pump 13 is connected to the annular space 22 through the inlet channel 23 (Figure 2). In the well, there is an upper reservoir 24 and a lower reservoir 25. A packer is installed on body 1
26, разделяющий затрубные пространства 19 и 22 скважины между продуктивными пластами 24 и 25. Когда расстояние между верхним и нижним плунжерными скважинными насосами 2 и 13 небольшое, а нижний плунжерный скважинный насос 13 установлен соосно с корпусом установки, то можно установить на колонне штанг 12 ниже верхнего плунжерного скважинного насоса 2 ассиметричный штанговый переводник26, separating the annular spaces 19 and 22 of the well between the productive formations 24 and 25. When the distance between the upper and lower plunger borehole pumps 2 and 13 is small, and the lower plunger borehole pump 13 is installed coaxially with the installation casing, then it is possible to install below 12 upper plunger borehole pump 2 asymmetric rod sub
27. Вместо штангового переводника 27 можно присоединить (Фиг.З) нижний насос через штангу с S-образный изгибом лежащем в плоскости смещения осей верхнего и нижнего плунжерных скважинных насосов. Как другой вариант, можно присоединить (Фиг.4) нижний плунжерный скважинный насос 13 к корпусу 1 через трубный ассиметричный переводник 28. 27. Instead of the rod sub 27, you can attach (Fig.Z) the lower pump through the rod with an S-shaped bend lying in the plane of displacement of the axes of the upper and lower plunger borehole pumps. As another option, you can attach (Figure 4) the lower plunger downhole pump 13 to the housing 1 through the asymmetric pipe sub 28.
При большом расстоянии между верхним и нижним плунжерными скважинными насосами 2 и 13, за счет гибкости штанг нет необходимости в применении для нижнего скважинного плунжерного насоса штангового или трубного переводников.  With a large distance between the upper and lower plunger borehole pumps 2 and 13, due to the flexibility of the rods, there is no need to use a rod or pipe sub for the lower borehole plunger pump.
Верхняя штанга колонны штанг 12 присоединяемая к траверсе 9 имеет фигурное сечение, например месяцеобразное или желобобразное, для соответствия сечения полости образованной наружной поверхностью верхнего плунжерного скважинного насоса 2 и внутренней поверхностью корпуса 1 установки (Фиг.5). Внутренний диаметр сечения серпообразной штанги может соответствовать наружному диаметру верхнего плунжерного скважинного насоса 2, а наружный диаметр сечения серпообразной штанги может соответствовать внутреннему диаметру корпуса 1 для уменьшения вероятности перетирания.  The upper rod of the rod string 12 to be attached to the traverse 9 has a figured cross-section, for example, a month-shaped or trough-shaped, to correspond to the cavity section formed by the outer surface of the upper plunger well pump 2 and the inner surface of the installation casing 1 (Figure 5). The inner diameter of the cross section of the crescent rod may correspond to the outer diameter of the upper plunger well pump 2, and the outer diameter of the cross section of the crescent rod may correspond to the inner diameter of the housing 1 to reduce the likelihood of grinding.
Как один из вариантов, предлагается фиксация положения верхней штанги и ее последующее крепление в траверсе 9 за счет наличия фрезерованных ориентированных пазов на верхнем конце штанги и в посадочном отверстии в траверсе 9 в которые установлена шпонка 29, и наличия резьбы 30 на верхнем конце штанги на которую надевается шайба 31, наворачиваются крепежная гайка 32 и контргайка 33 с целью закрепления штанги в траверсе 9. Кроме того, вместо фиксации шпонкой могут применяться другие варианты, например, шлицевая или многогранником.  As one of the options, it is proposed to fix the position of the upper rod and its subsequent fastening in the traverse 9 due to the presence of milled oriented grooves on the upper end of the rod and in the landing hole in the traverse 9 in which the key 29 is installed, and the presence of a thread 30 on the upper end of the rod on which the washer 31 is put on, the fastening nut 32 and the lock nut 33 are screwed in order to fix the rod in the crosshead 9. In addition, instead of fixing with a key, other options can be used, for example, a slotted or polyhedron.
В любом из вышеперечисленных вариантов на штангах 8, 10 и 12 можно установить центраторы (не показаны на чертежах).  In any of the above options on the rods 8, 10 and 12, you can install centralizers (not shown in the drawings).
Скважинная насосная установка при одновременно-раздельной эксплуатации двух пластов скважины работает следующим образом.  A downhole pumping unit during simultaneous and separate operation of two layers of a well works as follows.
В начале всасывания откачиваемой жидкости из скважины, общая колонна полых штанг 10 движется вверх, увлекая за собой плунжер 6 верхнего плунжерного скважинного насоса 2 и плунжер 14 нижнего плунжерного скважинного насоса 13. В насосной камере 3 верхнего плунжерного скважинного насоса 2 и в насосной камере 18 нижнего плунжерного скважинного насоса 13 создается разрежение. Клапаны 5 и 17 открываются и жидкость начинает поступать из затрубного пространства 19 в насосную камеру 3 верхнего плунжерного скважинного насоса 2 и из затрубного пространства 22 в насосную камеру 18 нижнего плунжерного скважинного насоса 13 т.к. после спуска насосной установки в скважину пакер 26 приведен в рабочее состояние и разделил затрубное пространство скважины на две части 19 и 22, соответственно. После достижения плунжерами 6 и 14 своих верхних положений и наполнения насосных камер 3 и 18, начинается движение вниз общей колонны полых штанг 10. Клапана 5 и 17 закрываются, а давление сжимаемой жидкости в насосных камерах 3 и 18 открывают клапана 7 и 16 и происходит перепуск жидкости из насосной камеры 3 в полость плунжера 6 и далее по общей колонне полых штанг 10 на устье скважины и из насосной камеры 18 в полость плунжера 14 и далее в корпус 1 установки и затем по лифтовой колонне (не показана на чертеже) на устье скважины. После достижения плунжерами 6 и 14 своих нижних положений цикл работы насосов и самой установки повторяется. At the beginning of the absorption of the pumped fluid from the well, the total column of hollow rods 10 moves up, dragging the plunger 6 the upper plunger well pump 2 and the plunger 14 of the lower plunger well pump 13. A vacuum is created in the pump chamber 3 of the upper plunger well pump 2 and in the pump chamber 18 of the lower plunger well pump 13. Valves 5 and 17 open and fluid begins to flow from the annulus 19 into the pump chamber 3 of the upper plunger downhole pump 2 and from the annular space 22 into the pump chamber 18 of the lower plunger downhole pump 13 because after the pumping unit was lowered into the well, the packer 26 was brought into working condition and divided the annulus of the well into two parts 19 and 22, respectively. After the plungers 6 and 14 reach their upper positions and fill the pump chambers 3 and 18, the downward movement of the common column of hollow rods 10 begins. Valves 5 and 17 are closed, and the pressure of the compressible fluid in the pump chambers 3 and 18 opens the valves 7 and 16 and there is a bypass fluid from the pump chamber 3 into the cavity of the plunger 6 and further along the common column of hollow rods 10 at the wellhead and from the pump chamber 18 into the cavity of the plunger 14 and further into the housing 1 of the installation and then along the lift string (not shown in the drawing) at the wellhead. After plungers 6 and 14 reach their lower positions, the cycle of the pumps and the installation itself is repeated.
Промышленная применимость Industrial applicability
Настоящее изобретение может быть использовано в нефтедобывающей и других отраслях промышленности при добыче различных жидких сред из скважин. The present invention can be used in the oil and other industries in the production of various liquid media from wells.
б b

Claims

Формула изобретения Claim
1. Скважинная насосная установка, содержащая штанговый привод, лифтовую колонну, верхний и нижний плунжерные скважинные насосы, связанный каждый со своей колонной штанг, отличающийся тем, что установка снабжена корпусом, траверсой и общей полой колонной штанг, последняя прикреплена к верхней части траверсы, на которой снизу закреплены колонны штанг верхнего и нижнего плунжерных скважинных насосов, причем колонна штанг верхнего плунжерного скважинного насоса выполнена полой и сообщена с полым плунжером верхнего плунжерного скважинного насоса и каналом, выполненным в траверсе, с общей полой колонной штанг, а колонна штанг нижнего плунжерного скважинного насоса установлена между цилиндром верхнего плунжерного скважинного насоса и корпусом насосной установки, причем верхний плунжерный скважинный насос смещен относительно продольной оси корпуса насосной установки. 1. A downhole pump installation comprising a rod drive, an elevator string, an upper and lower plunger borehole pumps, each connected to its rod string, characterized in that the installation is provided with a housing, a traverse and a common hollow rod string, the latter being attached to the upper part of the beam which is attached to the bottom of the rod string of the upper and lower plunger borehole pumps, and the rod string of the upper plunger borehole pump is hollow and communicates with the hollow plunger of the upper plunger borehole the pump and the channel, made in the traverse, with a common hollow column of rods, and the column of rods of the lower plunger downhole pump is installed between the cylinder of the upper plunger downhole pump and the casing of the pump installation, the upper plunger downhole pump is offset relative to the longitudinal axis of the casing of the pump installation.
2. Насосная установка по п.1, отличающаяся тем, что колонна штанг нижнего плунжерного насоса состоит, по крайней мере, из одной штанги.  2. The pump installation according to claim 1, characterized in that the rod string of the lower plunger pump consists of at least one rod.
3. Насосная установка по п.1, отличающаяся тем, что ось нижнего плунжерного скважинного насоса совпадает с осью насосной установки. 3. The pump installation according to claim 1, characterized in that the axis of the lower plunger well pump coincides with the axis of the pump installation.
4. Насосная установка по любому из п.1, 2, 3, отличающаяся тем, что колонна штанг нижнего плунжерного скважинного насоса между траверсой и нижним плунжерным скважинным насосом снабжена ассиметричным штанговым переводником. 4. A pump installation according to any one of claims 1, 2, 3, characterized in that the rod string of the lower plunger borehole pump between the crosshead and the lower plunger borehole pump is equipped with an asymmetric rod sub.
5. Насосная установка по любому из п.1 , 2, 3, отличающаяся тем, что колонна штанг нижнего плунжерного скважинного насоса имеет S- образный изгиб.  5. A pump installation according to any one of claims 1, 2, 3, characterized in that the rod string of the lower plunger borehole pump has an S-shaped bend.
6. Насосная установка по п.1, отличающаяся тем, что нижний плунжерный насос смещен относительно оси насосной установки в противоположную сторону от верхнего плунжерного скважинного насоса. 6. The pump installation according to claim 1, characterized in that the lower plunger pump is offset relative to the axis of the pump installation in the opposite direction from the upper plunger downhole pump.
7. Насосная установка по любому из п.1, 2, 6, отличающаяся тем, что штанга нижнего плунжерного насоса присоединяемая к траверсе, имеет фигурное сечение, например плоское, овальное, серпообразное и т.д. и ее положение относительно траверсы фиксируется. 7. A pump installation according to any one of claims 1, 2, 6, characterized in that the rod of the lower plunger pump connected to the traverse has a shaped cross section, for example, flat, oval, sickle-shaped, etc. and its position relative to the beam is fixed.
8. Насосная установка по п.6, отличающаяся тем, что корпус установки соединен с нижним плунжерным скважинным насосом посредством трубного ассиметричного переводника.  8. The pump installation according to claim 6, characterized in that the housing of the installation is connected to the lower plunger well pump by means of a pipe asymmetric sub.
9. Насосная установка по п.1, отличающаяся тем, что колонна штанг верхнего плунжерного насоса состоит, по крайней мере, из одной штанги.  9. The pump installation according to claim 1, characterized in that the rod string of the upper plunger pump consists of at least one rod.
10. Насосная установка по п.1, отличающаяся тем, что на штангах установлены центраторы.  10. The pump installation according to claim 1, characterized in that centralizers are installed on the rods.
PCT/RU2012/000471 2011-06-22 2012-06-18 Downhole pump assembly WO2012177179A2 (en)

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