RU2455470C1 - Installation for simultaneous separate operation of two oil formations - Google Patents

Installation for simultaneous separate operation of two oil formations Download PDF

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Publication number
RU2455470C1
RU2455470C1 RU2011136775/03A RU2011136775A RU2455470C1 RU 2455470 C1 RU2455470 C1 RU 2455470C1 RU 2011136775/03 A RU2011136775/03 A RU 2011136775/03A RU 2011136775 A RU2011136775 A RU 2011136775A RU 2455470 C1 RU2455470 C1 RU 2455470C1
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RU
Russia
Prior art keywords
channel
valve
plunger
cylinder
coupling
Prior art date
Application number
RU2011136775/03A
Other languages
Russian (ru)
Inventor
Наиль Габдулбариевич Ибрагимов (RU)
Наиль Габдулбариевич Ибрагимов
Роберт Рафаэлевич Ахмадуллин (RU)
Роберт Рафаэлевич Ахмадуллин
Александр Александрович Иванов (RU)
Александр Александрович Иванов
Анвар Хайдаргалиевич Шайахметов (RU)
Анвар Хайдаргалиевич Шайахметов
Равиль Раисович Каримов (RU)
Равиль Раисович Каримов
Ильяс Гомерович Хаиров (RU)
Ильяс Гомерович Хаиров
Салават Акрамович Юмадилов (RU)
Салават Акрамович Юмадилов
Original Assignee
Открытое акционерное общество "Татнефть" им. В.Д. Шашина
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.)
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Application filed by Открытое акционерное общество "Татнефть" им. В.Д. Шашина filed Critical Открытое акционерное общество "Татнефть" им. В.Д. Шашина
Priority to RU2011136775/03A priority Critical patent/RU2455470C1/en
Application granted granted Critical
Publication of RU2455470C1 publication Critical patent/RU2455470C1/en

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Abstract

FIELD: oil and gas production.
SUBSTANCE: installation includes pipe string that forms tubular annulus with casing, upper and lower packers that isolate tubular annulus of the upper stratum, cylinder, valves and drain channel of piston pump, intake valve, cylinder and channel of plunger pump. The installation is equipped by coupling, bushing, screen, cover. The coupling is connected to the lower packer and cylinder of piston pump, the bushing is connected to the cylinders of plunger and piston pumps, the screen is connected to the coupling and bushing, the cover is connected to the coupling and upper packer. The screen, cover and cylinder of piston pump are separated by annular channels. The valves and valve channels of piston pump and intake valve and valve channels of plunger pump are located in the coupling. The channel of piston pump pressure valve is connected to the tubular annulus by channel between the cover and screen, the drain channel of plunger pump valve is connected to the plunger pump cylinder cavity by channel between the screen and cover, intake channel of plunger pump valve is connected to the inter-packer tubular annulus.
EFFECT: increase of installation operation reliability for simultaneous separate operation of two strata.
1 dwg

Description

The invention relates to the oil industry and may find application in the simultaneous and separate operation of two layers.
A known installation for simultaneous and separate operation of two layers (RF patent No. 2221136, published. 01/10/2004), containing a column of elevator pipes, a packer, a liner, a sucker rod pump equipped with an additional suction valve located on the side wall of its cylinder.
The disadvantages of the known installation for simultaneous and separate operation of two layers are the lack of the ability to raise the production of the layers, if their mixing is unacceptable, measuring the flow rate and water cut of the products separately for each layer.
A known installation for simultaneous and separate operation of two layers (RF patent for utility model No. 72720, published. 04/27/2008), containing the main and additional drives, a packer installed between the productive layers, the main, communicated with the sub-packer space of the well, and the additional, communicated with over-packer space of the well, lift pipes with sucker-rod pumps fixed to the wellhead with double-barreled fittings, a parallel armature mounted on both lift pipes.
The well-known installation allows for separate lifting, measuring the flow rate and water cut of formation products, however, hoisting operations are complex and time-consuming, and the installation itself is metal-intensive.
Closest to the proposed invention in technical essence is a unit for simultaneous and separate operation of two layers, containing a pipe string forming an annulus with a casing string, packers upper and lower isolating the annulus of the upper layer, a piston pump with valves and a drain channel, a plunger pump with a cylinder, a receiving valve and channels (RF patent for utility model No. 855547, publ. 08/10/2009 - prototype).
The disadvantages of this device are:
- the need to use as an upper packer, a special one having an additional longitudinal passage channel;
- placement of the discharge valve with the drain channel of the piston pump and the intake valve with the channels of the plunger pump in the individual pipe elements increase the dimensions of the installation, which limits the scope of the installation.
The proposed invention solves the problem of improving the reliability of the installation by simplifying the design.
The problem is solved in that the proposed installation uses standard packers with an axial passage channel, drain channels of the discharge valve of the piston pump and the receiving valve of the plunger pump are made coaxially with the axial channel of the upper packer and the cylinder of the plunger pump, the valves of the piston pump and the receiving valve of the plunger pump are located in the coupling.
For this purpose, new structural elements are introduced - a coupling, a sleeve, a shield, a casing. The drain valve of the piston pump communicates with the annulus of the well above the upper packer through an annular channel between the screen and the casing. The suction valve of the plunger pump is in communication with the sub-plunger space along the annular channel between the screen and the piston pump cylinder. The reciprocating valve of the piston pump is located in the axial channel of the coupling.
Figure 1 shows the installation for simultaneous-separate operation of two layers at the time of movement of the column of rods down.
The installation for simultaneous and separate operation of two layers (hereinafter referred to as the installation) contains rod strings 1 and pipes 2 located in the casing 3. The casing perforation area in the area of the upper formation is isolated by the upper 4 and lower 5 packers. A cylinder 6 of a plunger pump is connected to the pipe string 2, in which a plunger 7 with an internal conical surface 8 and a poppet valve 9 mounted on the rod string 1 are placed. The poppet valve 9 with the outer conical 10 and cylindrical 11 surfaces is formed to form an annular gap 12 with the inner the surface of the cylinder 6, sufficient for the free flow of the borehole fluid along the conical surfaces 8 and 10 from the subvalvular cavity 13 into the cavity 14 of the plunger 7. Connected to the bottom of the cylinder 6 of the plunger pump ulka 15 with the annular projection 16 and hole 17.
A piston pump cylinder 18 and a shield 19 are connected to the sleeve 15 and connected to the coupling 20. In the coupling 20, a check valve 21 of the plunger pump, a check valve 22 and a discharge valve 23 of the piston pump are arranged. In the coupling 20 there are inlet 24 and drain 25 channels, inlet 26 and drain 27 channels of the discharge valve 23 of the piston pump, channels of the intake valve 21 of the plunger pump, input channel 28 of the intake 22 of the piston pump valve. The coupling 20 is connected to the packer 5.
A casing 29 is connected to the upper packer 4, connected to the coupling 20. The annular space 30 between the casing 29 and the screen 19, the drain channel 27 of the piston pump injection valve 23 is in communication with the annulus of the well above the location of the upper packer 4. The annular space 31 between the cylinder 18 of the piston the pump and the screen 19, the drain channel 25 of the receiving valve 21 of the plunger pump is in communication with the subvalvular cavity 13.
A pusher 32 is mounted on the rod string, made in the form of a truncated two-stage washer with symmetrical flats 33. The length of the lower pusher 32 provides continuous sliding of the lower pusher 32 on the inner surface of the cylinder 6, and the annular protrusion of the larger pusher, reduced by flats 33, is designed to interact with the upper end surface of the plunger 7 when the column string 1 moves down.
A plunger 32, a poppet valve 9 of the plunger 7 and a piston 34 of the piston pump are fixed on the column of the rods 1. The pusher 32 and the poppet valve 9 are connected by a single rod and placed on different sides from the end surfaces of the plunger 7, have the possibility of limited movement along the plunger 7. The piston 34 has the possibility of longitudinal movement along the cylinder 18 of the piston pump.
Installation works as follows.
When the column string 1 moves down, the piston 34, the poppet valve 9 and the pusher 32 are fixed downward on the column string 1. When the pusher 32 contacts the upper end surface of the plunger 7 and the column 1, the plunger 7. The plunger 7 moves downwardly the protrusion 16. The pusher 32 and the poppet valve 9 are rigidly connected by a single rod, when the pusher 32 contacts the plunger 7, the poppet valve 9 moves away from the lower end surface of the plunger 7. The well fluid from the subvalvular cavity 13 along the annular gap 12 freely flows into the cavity 14 of the plunger. The piston 34 under the action of the weight of the rod string 1 and the hydrostatic pressure of the liquid column compresses the liquid under the piston 34, which opens the discharge valve 23 through the channel 26 and enters the annulus 30 of the installation through the channel 27 and then into the annulus of the well above the installation site of the upper packer 4. When the column string 1 moves down, the plunger 7 moves down simultaneously with free flow of the borehole fluid through the plunger 7, compression and removal of the borehole fluid from the cavity of the piston cylinder 18 sucking into the annulus of the well above the installation site of the upper packer 4.
When the column string 1 moves upward, the piston 34, the poppet valve 9 and the pusher 32 are mounted simultaneously on the string of the string 1. The poppet valve 9 moves upward until the conical surface 10 contacts the conical surface 8 of the plunger 7, as a result of which the passage section of the plunger 7 overlaps. After closing the bore of the plunger 7 when moving up the column of rods 1, the liquid column moves above the plunger up, and a lower region is created in the subvalvular cavity of the cylinder 6 of the plunger pump pressure. The reservoir fluid from the upper reservoir through the inlet channel 24, the channel of the receiving valve 21 through the annular space 31 of the installation enters the subvalve cavity of reduced pressure. In this case, the formation fluid is sucked into the subvalvular cavity 13 of the plunger pump and the fluid is injected from the cylinder 6 above the plunger 7 into the cavity of the pipe string 2. When the piston 34 of the piston pump moves upward with the rod string 1 under the piston 34, a reduced pressure region is created. Downhole fluid from the lower reservoir through the inlet channel 28 of the intake valve 22 of the piston pump enters the low pressure area under the piston 34.
During the reverse movement of the string of rods 1, injection of well fluid from the lower formation into the annulus of the well takes place, and fluid from the upper reservoir into the cavity of the pipe string 2.
Tests of the installation in borehole conditions showed its high reliability; no failures or breakdowns were noted. Installation is simple in design, does not contain complex and metal-consuming elements.
The application of the proposed installation will solve the problem of improving the reliability of the installation and simplify its design.

Claims (1)

  1. Installation for simultaneous and separate operation of two layers, containing a string of pipes forming the annular space with the casing string, packers upper and lower, isolating the annular space of the upper formation, cylinder, valves and drain channel of the piston pump, receiving valve, cylinder and channel of the plunger pump, characterized the fact that the installation is equipped with a coupling, a sleeve, a screen, a casing, the coupling is connected to the lower packer and the piston pump cylinder, the sleeve is connected to the cylinders of the plunger and piston pumps, the screen with it is one with the coupling and the sleeve, the casing is connected to the coupling and the upper packer, the screen, the casing, the piston pump cylinder are separated by annular channels, the valves and piston pump valve channels, the receiving valve and plunger pump valve channels, the piston pump discharge channel through the channel are placed in the coupling between the casing and the screen is connected with the annular space, the drain channel of the plunger pump valve is connected through the channel between the screen and the casing with the cylinder cavity of the plunger pump, the receiving channel of the plunger pump valve is Generalized with interpacker tube space.
RU2011136775/03A 2011-09-06 2011-09-06 Installation for simultaneous separate operation of two oil formations RU2455470C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2011136775/03A RU2455470C1 (en) 2011-09-06 2011-09-06 Installation for simultaneous separate operation of two oil formations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2011136775/03A RU2455470C1 (en) 2011-09-06 2011-09-06 Installation for simultaneous separate operation of two oil formations

Publications (1)

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RU2455470C1 true RU2455470C1 (en) 2012-07-10

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637468A (en) * 1985-09-03 1987-01-20 Derrick John M Method and apparatus for multizone oil and gas production
SU1388548A1 (en) * 1985-06-11 1988-04-15 Волгоградский государственный научно-исследовательский и проектный институт нефтяной промышленности Arrangement for removing water from well
US5176216A (en) * 1991-06-26 1993-01-05 Oxy Usa, Inc. Bypass seating nipple
RU2221136C1 (en) * 2002-05-06 2004-01-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Installation for separate operation of two formations simultaneously
RU2305170C2 (en) * 2004-01-13 2007-08-27 Махир Зафар оглы Шарифов Packer separation device for well reservoir operation (variants)
RU72720U1 (en) * 2007-06-26 2008-04-27 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Installation for simultaneous-separate operation of two layers
RU85547U1 (en) * 2009-03-30 2009-08-10 Общество с ограниченной ответственностью "Научно-производственная организация "Инновация" (ООО "НПО "Инновация") Installation for simultaneous-separate operation of two layers
RU2381352C1 (en) * 2008-10-29 2010-02-10 Николай Иванович Парийчук Borehole pumping unit for two reservoirs simultaneouse production

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1388548A1 (en) * 1985-06-11 1988-04-15 Волгоградский государственный научно-исследовательский и проектный институт нефтяной промышленности Arrangement for removing water from well
US4637468A (en) * 1985-09-03 1987-01-20 Derrick John M Method and apparatus for multizone oil and gas production
US5176216A (en) * 1991-06-26 1993-01-05 Oxy Usa, Inc. Bypass seating nipple
RU2221136C1 (en) * 2002-05-06 2004-01-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Installation for separate operation of two formations simultaneously
RU2305170C2 (en) * 2004-01-13 2007-08-27 Махир Зафар оглы Шарифов Packer separation device for well reservoir operation (variants)
RU72720U1 (en) * 2007-06-26 2008-04-27 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Installation for simultaneous-separate operation of two layers
RU2381352C1 (en) * 2008-10-29 2010-02-10 Николай Иванович Парийчук Borehole pumping unit for two reservoirs simultaneouse production
RU85547U1 (en) * 2009-03-30 2009-08-10 Общество с ограниченной ответственностью "Научно-производственная организация "Инновация" (ООО "НПО "Инновация") Installation for simultaneous-separate operation of two layers

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Effective date: 20180907