EP2453104A1 - Bohrlochvorrichtung - Google Patents

Bohrlochvorrichtung Download PDF

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Publication number
EP2453104A1
EP2453104A1 EP10797365A EP10797365A EP2453104A1 EP 2453104 A1 EP2453104 A1 EP 2453104A1 EP 10797365 A EP10797365 A EP 10797365A EP 10797365 A EP10797365 A EP 10797365A EP 2453104 A1 EP2453104 A1 EP 2453104A1
Authority
EP
European Patent Office
Prior art keywords
well
seal
housing
segments
cavity
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.)
Withdrawn
Application number
EP10797365A
Other languages
English (en)
French (fr)
Inventor
Dmitry Ivanovich ALEKSANDROV
Pavel Dmitrievich Aleksandrov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43429390&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2453104(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP2453104A1 publication Critical patent/EP2453104A1/de
Withdrawn legal-status Critical Current

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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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • 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

Definitions

  • the invention pertains to the oil and gas industry and can be used in technical operations relating to well completion.
  • the known downhole shutoff devices are characterized by the significant reduction of flow channel diameter compared to the producing well diameter.
  • the rotating universal hydraulic preventer containing a housing with a cavity and a central opening, a cover with an opening, bearings, a shell, a sealing element located in the shell RU No. 2208126 C2 , E21B33/06, 10.07.2003; RU No. 2013519 C1 , E21B33/06, 30.05.1994; RU No. 45770 U1 , E21B33/06, 27.05.2005.
  • the known rotating preventers which are installed on the well opening, have overall dimensions significantly exceeding the well diameter; they do not completely overlap the cross-section.
  • a rotating preventer containing a housing, a bearing assembly, a shaft rotating in the bearing assembly and a sealing device connected with the well equipment, RU No. 2341643 C1 , E21B33/06, 20.12.2008.
  • the sealing device of the "closest analog" preventer is made in the form of a spacer ring with a groove on the inner surface and is located on the coupling connecting the drill string and the kelly stem.
  • the groove in the spacer ring is connected with the inner cavity of the coupling.
  • the sealing device of the "closest analog” preventer seals the well opening during drilling operations and such sealing is possible only under action of drill fluid, which limits execution of other process operations.
  • the "closest analog” preventer belongs to devices that seal the well opening during drilling.
  • this problem is solved by using a borehole device containing a housing; a bearing assembly; and a sealing device connected with the borehole equipment.
  • the device acts as a sealing device by using a seal.
  • the seal separates the well into the upper and lower cavity with the presence of hydraulic connection between the well opening and the upper cavity and between the lower cavity and the producing formation respectively.
  • the seal has a collet with segments in the lower part and is made capable of separating at interaction with the well equipment, is equipped with additional seals on lateral surfaces, a liner on external surfaces, springs and casing located in the lower part and providing arrangement of segments during their separation.
  • the seal is located in the housing provided with the upper thread and fastened in the beating assembly.
  • the device further includes an adjustment insert that is capable of interacting with the well equipment upon the installation thereof and of moving same so as to open the channel of a hydraulic connection between the well opening, the upper cavity, the lower cavity and the producing formation.
  • the invention is characterized by a number of optional features, namely:
  • the invention meets the "novelty" (N) criterion.
  • the immediate technical result is implementation of technical operations on well completion without creation of overbalance on the productive deposits by the washer fluid column, with the help of the suggested device made as a sealing device by means of the seal separating the well into the upper and lower cavities, containing the collet with segments in the lower part capable of separating at interaction with the well equipment and located in the housing fastened in the bearing assembly.
  • the downhole device contains:
  • the borehole device contains a housing (1), bearing assembly (4) and seal (5).
  • the device acts as a sealing device by using a seal (5).
  • the seal (5) separates the well into the upper (16) and the lower (17) cavity with the presence of hydraulic connection between the well opening and the upper cavity and between the lower cavity and the producing formation respectively.
  • the seal (5) contains a funnel-shaped collet (7).
  • the collet (7) in the encasing (6) in the lower part contains segments (8) closely fitting to each other, capable of separating and equipped with the additional seals (9) on the lateral surfaces.
  • the collet (7) contains a liner (10) on its external surfaces.
  • the liner (10) is made of a strong flexible material.
  • the collet (7) contains springs (11).
  • the encasing (6) is located in the lower part of the collet (7) providing arrangement of segments (8) during their separation.
  • the space between the seal (5) and the encasing (6) is filled with grease.
  • the seal (5) is located in the housing (1) provided with the upper thread (2) and fastened in the beating assembly.
  • the bearing assembly contains the oil-filled sealed bearing (4).
  • the lower thread (3) is made on the housing (1) for installation of the device between the pipes of the casing string (18), if necessary.
  • the device further includes an adjustment insert (12).
  • the adjustment insert (12) is capable of interacting with the well equipment during its installation, for example, with the drill string (19), and of moving the same so as to open the channel of a hydraulic connection (13) between the well opening, the upper cavity, the lower cavity and the producing formation.
  • the device is additionally equipped with the drill-through cover (14).
  • the drill-through cover (14) is made of easily drillable material, for example, 16.
  • the locating insert (12) in installed in the seal (5).
  • the space between the seal (5) and the encasing (6) is filled with grease to prevent crushing of the encasing (6) under external pressure during lowering of the device into the well (15).
  • the housing (1) of the device is connected by means of the upper thread (2) and the lower thread (3) with the pipe of the string (18) located below.
  • the casing string (18) together with the device is lowered into the well.
  • the drill string (19) is lowered down to the device and the locating insert (12) is pushed out by subsequent pressing, thus breaking the drill-through cover (14).
  • Segments (8) of the collet (7) are separated and the channels of the hydraulic connection (13) between the well opening, the upper cavity, the lower cavity and the producing formation open.
  • the encasing (6) provides the guaranteed space for location of the separated segments (8).
  • the drill string (19) is lowered down to the productive deposits.
  • the drill string (19) is lowered in the similar way through the device.
  • the device supports their installation and operation in the required modes.
  • Availability of the collet in the seal which provides interaction with the well equipment and opening of the channel of the hydraulic connection between the well opening, the upper cavity, the lower cavity and the producing formation prevents inflow of formation fluids, when necessary.
  • the suggested downhole device can be used during execution of the process operations on the well completion without loss of flow channel diameter by more than the normative value, during prevention of the formation fluids inflow and during application of the known parts and assemblies manufactured industrially and widely used in the oil and gas producing industry, and the research, development and testing of the experimental batches confirme, in the applicant's opinion, its compliance with the "industrial applicability" (IA) criterion.
  • IA industrial applicability

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Sealing Devices (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
EP10797365A 2009-07-10 2010-06-07 Bohrlochvorrichtung Withdrawn EP2453104A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2009126485 2009-07-10
PCT/RU2010/000294 WO2011005144A1 (ru) 2009-07-10 2010-06-07 Устройство внутрискважинное

Publications (1)

Publication Number Publication Date
EP2453104A1 true EP2453104A1 (de) 2012-05-16

Family

ID=43429390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10797365A Withdrawn EP2453104A1 (de) 2009-07-10 2010-06-07 Bohrlochvorrichtung

Country Status (13)

Country Link
US (1) US20120132429A1 (de)
EP (1) EP2453104A1 (de)
KR (1) KR20120048622A (de)
CN (1) CN102482929B (de)
BR (1) BR112012000580A2 (de)
CA (1) CA2767197A1 (de)
CL (1) CL2012000067A1 (de)
EA (1) EA020796B1 (de)
IN (1) IN2012DN00916A (de)
MX (1) MX2012000004A (de)
PE (1) PE20121203A1 (de)
UA (1) UA105797C2 (de)
WO (1) WO2011005144A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9470055B2 (en) 2012-12-20 2016-10-18 Schlumberger Technology Corporation System and method for providing oscillation downhole

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RU2013519C1 (ru) 1991-03-28 1994-05-30 Павел Леонтьевич Пшеничный Универсальный превентор пшеничного
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Also Published As

Publication number Publication date
EA201200108A1 (ru) 2012-06-29
US20120132429A1 (en) 2012-05-31
CA2767197A1 (en) 2011-01-13
CL2012000067A1 (es) 2013-02-08
MX2012000004A (es) 2012-10-03
PE20121203A1 (es) 2012-09-28
IN2012DN00916A (de) 2015-04-03
WO2011005144A1 (ru) 2011-01-13
EA020796B1 (ru) 2015-01-30
BR112012000580A2 (pt) 2019-09-24
CN102482929B (zh) 2014-04-02
KR20120048622A (ko) 2012-05-15
CN102482929A (zh) 2012-05-30
UA105797C2 (uk) 2014-06-25

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