RU196757U1 - Sealer - Google Patents

Sealer Download PDF

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Publication number
RU196757U1
RU196757U1 RU2019145744U RU2019145744U RU196757U1 RU 196757 U1 RU196757 U1 RU 196757U1 RU 2019145744 U RU2019145744 U RU 2019145744U RU 2019145744 U RU2019145744 U RU 2019145744U RU 196757 U1 RU196757 U1 RU 196757U1
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RU
Russia
Prior art keywords
support ring
flange
support
sealant
guide
Prior art date
Application number
RU2019145744U
Other languages
Russian (ru)
Inventor
Эдуард Владимирович Текучев
Николай Михайлович Березкин
Геннадий Валентинович Попов
Анатолий Петрович Дубровин
Original Assignee
Общество с ограниченной ответственностью "РГМ-Нефть-Газ-Сервис"
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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Priority to RU2019145744U priority Critical patent/RU196757U1/en
Application granted granted Critical
Publication of RU196757U1 publication Critical patent/RU196757U1/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof

Abstract

The utility model relates to the field of operation and underground repair of oil and gas wells using long clutchless pipes. A sealant containing a hollow piston 1, which includes a hollow guide 4, fixed inside the cylinder 2, screwed into the upper flange 3, which is connected to the support And, the lower flange 7, in which the guide insert 6 and the nipple 8, the gland 14, installed between lower support ring 15 and upper support ring 16, characterized in that the lower support ring 15 is installed inside the guide insert 6, while the upper surfaces of the lower support ring 15 and the guide insert 6 form a single surface.

Description

The utility model relates to the field of operation and underground repair of oil and gas wells using long clutchless pipes.
A known analog sealant of long clutchless pipes in the description of the utility model to the patent No. 81519, IPC ЕВВ 33/03, from 08.10.2008, publ. 03/20/2009, comprising a housing, which is made in the form of two parts connected together, lower and upper, interconnected in such a way that the lower end of the upper part of the housing forms an annular protrusion in the internal cavity of the housing, the upper part of the housing is made of at least with two through windows on the side surface, the upper base of the housing is made with a through axial hole, and the lower base of the housing is made with a through axial channel to pass the body to be sealed (long sleeveless pipe), which passes through a sealing element connected by means of connecting elements to the lower and upper restrictive supports made with central axial openings for passing the body to be sealed, and the upper restrictive support made with the upper horizontal outlet abuts against the upper surface of the horizontal outlet into a retractable latch mounted in the upper part case, and the lower restrictive support abuts against an annular cylindrical protrusion along which a through axial channel passes l at the base of the inner cavity of the lower part of the housing, which is simultaneously the cavity of the hydraulic cylinder associated with the sources of supply and removal of the working fluid, while the piston of the hydraulic cylinder made in the form of a hollow cylindrical body has a variable diameter in its upper and lower parts and is equipped with at least two additional hydraulic cylinders located in its walls, the piston rods of which are pushers that abut their upper end surface against the lower surface of the horizontal outlet ska upper limit support. And also, the sealing element is made in the form of two concentrically arranged elastic parts with a curly section of joined vertical planes. In this case, a retractable latch mounted in the upper part of the housing is the lower base of the through windows. Both the upper and lower parts of the housing are interconnected by means of a threaded connection. And also, the interconnected upper and lower parts of the body are fixed with one or more stoppers. At the same time, the hollow cylindrical piston of the hydraulic cylinder is equipped with one or more stuffing boxes. And in the upper part of the body there is a fitting with a spray gun for lubrication of the body to be sealed. At the same time, through windows on the lateral surface of the upper part of the housing are located symmetrically with respect to the central axis XX. Disadvantages: skipping well fluid.
The closest analogue is known as a sealant in the description of a utility model for patent No. 103130, IPC ЕВВ 33/03, dated November 19, 2010, publ. 03/27/2011, comprising a housing, a flange, a piston, an intermediate flange, a lower ring, an oil seal, an upper ring and studs, characterized in that the upper case has a upper housing having a centering flange with mounting grooves, windows for mounting or dismounting a technological tool, however, in one of the windows there is a square for supplying fluid to a long clutchless pipe.
Disadvantages: skipping well fluid.
EFFECT: elimination of skipping of well fluid.
The technical result in a sealant containing a hollow piston 1, which includes a hollow guide 4, fixed inside the cylinder 2, screwed into the upper flange 3, which is connected to the support 11, the lower flange 7, in which the guide insert 6 and the nipple 8, the gland 14 are fixed installed between the lower support ring 15 and the upper support ring 16 is achieved due to the fact that the lower support ring 15 is installed inside the guide insert 6, while the upper surfaces of the lower support ring 15 and the guide insert 6 form a single surface.
A drawback of analogues of existing structures is the possibility of passing the well fluid through the gaps between the lower support ring made of metal and the guide insert.
The existing design is devoid of this drawback due to the fact that the lower support ring is installed inside the guide insert and the gland seals the surfaces of the lower support ring and the guide insert that are in contact with it at the same time, which eliminates the possibility of the well fluid passing into the environment and increases the reliability of the sealant.
The essence of the utility model is illustrated by drawings, where
in FIG. 1 - shows a sealant in a section;
in FIG. 2 - side view of the pressurizer;
in FIG. 3 shows the seal of the internal cavity of the sealant with DBT.
Description.
The sealant contains a hollow piston 1, a cylinder 2, which is screwed into the upper flange 3, the lower flange 7, the nipple 8, the support 11.
The cylinder 2 comprises an upper fitting 21, a lower fitting 22, an upper drain valve 20 and a lower drain valve 12.
Inside the cylinder 2, a hollow guide 4 is fixed, which enters the internal cavity of the hollow piston 1.
The upper insert 13 and the spacer sleeve 19, which serve as a support for the DBT (not shown), are screwed into the hollow guide 4 from above, as it moves along the sealant.
To ensure the lubrication of the DBT during its movement along the sealant, the lubricant supply nozzle 9 is screwed into the upper insert 13. To collect and drain excess lubricant from the zone of the input of the DBT to the gland 14, the support 11 has a drain nozzle 18 with a valve 10, which is connected to the tank using a hose (not shown in the drawing).
The upper flange 3 and the lower flange 7 are interconnected by pins 5 with nuts. Between the upper flange 3 and the lower flange 7, the pivots 5 are fitted with pivoting flaps 17, which can rotate around the pins 5 and press against the hollow piston 1 when it is pulled out to its lowermost position. The support 11 is connected to the upper flange 3. From turning in the working position, the swinging wings 17 are fixed with screws. A round nut is screwed onto the hollow piston 1 from below, which locks it in the lower position through the rotary flaps 17.
A nipple 8 with a union nut is screwed to the bottom flange 7, by means of which the sealant is attached to the preventer (not shown in the drawing). A guide insert 6 is fixed in the lower flange 7, a lower support ring 15 is installed inside the guide insert 6. An oil seal 14, consisting of two halves, is installed on the lower support ring 15. The upper surfaces of the lower support ring 15 and the guide insert 6 form a single surface. On top of the gland 14, an upper support ring 16 is installed, which simultaneously enters and is centered in the hollow guide 4.
The operation of the device.
When conducting a round-trip operation (STR) during the underground repair of oil and gas wells using long clutchless pipes (DBT), the sealant is mounted using a quick-connect coupling (BRS) of nipple 8 and a union nut to a preventer mounted on a fountain valve. DBT passes from above from the feed mechanism of the coiled tubing installation through the sealant into the well.
To seal the wellhead during a round-trip operation (SPO) after applying control pressure from the operator’s cabin, hydraulic fluid enters the upper cavity of cylinder 2 through the upper fitting 21 and the hollow piston 1 starts to move down. In this case, the piston 1 covers the gland 14 with its internal cavity and, continuing to move downward, closes the gap between the hollow piston 1 and the guide insert 6. After the hollow piston 1 has completely covered the gland 14, it presses on the upper support ring 16 and the gland 14 the upper support ring 16 is pressed simultaneously to the lower support ring 15 and the guide insert 6.
Since the lower support ring 15 is installed inside the guide insert 6, the gland 14 seals the single surface of the lower support ring 15 and the guide insert 6 in contact with it, which eliminates the possibility of the well fluid passing into the environment and increases the reliability of the sealant.
In this case, the gland 14 is deformed, compresses the pipe, performing sealing.
To exclude the possibility of accidental lifting of the hollow piston 1 and depressurization of the mouth, the hollow piston 1 in the lower position is locked by pivoting wings 17, which are fixed with screws.
In the SPO process, when the flexible pipe (DBT) passes through the gland 14 due to friction, the gland 14 is worn out, therefore, the coiled tubing operator changes the control pressure depending on the state of the gland 14. To reduce friction, the operator supplies grease through the hollow guide 4 to the cavity through the nozzle 9. Excess grease from the zone of entry of the DBT into the gland 14 is collected in the support 11 and discharged through a valve 10, which is connected to a collection tank via a hose (not shown in the drawing).
To squeeze the stuffing box 14, it is necessary to unlock and retract the rotary flaps 17. After applying the control pressure from the operator's cab, hydraulic fluid through the lower fitting 22 enters the lower cavity of the cylinder 2 and the hollow piston 1 starts to move upward and gives access to the stuffing box 14 to replace it.
The use of the claimed utility model eliminates skipping of the well fluid.

Claims (1)

  1. A sealant comprising a hollow piston, which includes a hollow guide fixed inside a cylinder screwed into the upper flange that is connected to the support, a lower flange in which the guide insert and nipple are fixed, an oil seal installed between the lower support ring and the upper support ring, characterized the fact that the lower support ring is installed inside the guide insert, while the upper surfaces of the lower support ring and insert form a single surface.
RU2019145744U 2019-12-31 2019-12-31 Sealer RU196757U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2019145744U RU196757U1 (en) 2019-12-31 2019-12-31 Sealer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2019145744U RU196757U1 (en) 2019-12-31 2019-12-31 Sealer

Publications (1)

Publication Number Publication Date
RU196757U1 true RU196757U1 (en) 2020-03-13

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RU2019145744U RU196757U1 (en) 2019-12-31 2019-12-31 Sealer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2744288C1 (en) * 2020-09-15 2021-03-04 Юрий Иванович Князев Long-size coupling-free pipe sealer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692107A (en) * 1971-02-23 1972-09-19 Bowen Tools Inc Tubing hanger assembly and method of using same for hanging tubing in a well under pressure with no check valve in tubing
SU1183658A1 (en) * 1984-01-02 1985-10-07 Кузнецкий Филиал Научно-Исследовательского И Проектно-Конструкторского Института По Добыче Полезных Ископаемых Открытым Способом Hole-sealing arrangement
RU21930U1 (en) * 2001-04-09 2002-02-27 Общественное объединение "Белорусский фонд развития и поддержки изобретательства и рационализации" Well mount sealing device
RU103130U1 (en) * 2010-11-19 2011-03-27 ООО "РГМ-Нефть-Газ-Сервис" Sealer
CN105156060A (en) * 2015-07-23 2015-12-16 中国石油大学(华东) Coiled tubing well sealing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692107A (en) * 1971-02-23 1972-09-19 Bowen Tools Inc Tubing hanger assembly and method of using same for hanging tubing in a well under pressure with no check valve in tubing
SU1183658A1 (en) * 1984-01-02 1985-10-07 Кузнецкий Филиал Научно-Исследовательского И Проектно-Конструкторского Института По Добыче Полезных Ископаемых Открытым Способом Hole-sealing arrangement
RU21930U1 (en) * 2001-04-09 2002-02-27 Общественное объединение "Белорусский фонд развития и поддержки изобретательства и рационализации" Well mount sealing device
RU103130U1 (en) * 2010-11-19 2011-03-27 ООО "РГМ-Нефть-Газ-Сервис" Sealer
CN105156060A (en) * 2015-07-23 2015-12-16 中国石油大学(华东) Coiled tubing well sealing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2744288C1 (en) * 2020-09-15 2021-03-04 Юрий Иванович Князев Long-size coupling-free pipe sealer

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