EP2823140A1 - Method for zone isolation in a subterranean well - Google Patents
Method for zone isolation in a subterranean wellInfo
- Publication number
- EP2823140A1 EP2823140A1 EP13757768.0A EP13757768A EP2823140A1 EP 2823140 A1 EP2823140 A1 EP 2823140A1 EP 13757768 A EP13757768 A EP 13757768A EP 2823140 A1 EP2823140 A1 EP 2823140A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- well
- pipe body
- plug
- accordance
- washing
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000002955 isolation Methods 0.000 title claims abstract description 9
- 238000005406 washing Methods 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
-
- 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
- E21B43/11—Perforators; Permeators
Definitions
- the invention relates to a method for zone isolation in a subterranean well. More specifically, the invention relates to a method in which a balanced plug over a longitudinal section is established in the entire cross section of the well to prevent undesired production from a reservoir.
- Isolation between zones in different production intervals is essential to be able to control and optimize the production from a subterranean well such as a petroleum well or a geothermal well.
- a subterranean well such as a petroleum well or a geothermal well.
- the fluid flows within the reservoir may change so that the production decreases or, at worst, comes to a halt.
- the interface between water and oil may gradually be draw upwards and enter the producing zone, so-called coning, so that a flow of water completely or partially replaces the flow of hydrocarbons into the production string of the well. Gas coning may also occur.
- Barriers intended to prevent undesired fluid flows between different zones of a reservoir are subjected to great strains, in the form of powerful pressures and temperature differences among other things, hence intense tension and stress forces. It is known that this may result in damage to a cement barrier so that the integrity of the barrier is ruined. This may result in undesired fluid production behind casing and casing liners, among other things, and could further reduce or, at worst, make further production from the well impossible.
- the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art or at least provide a useful alternative to the prior art.
- the pipe body may be, for example, a casing or a casing liner of types known per se and the pipe body may be part of a longer pipe string.
- the surrounding well body may be another pipe body, or it may be the formation itself.
- a well plug may be established by means of a method and devices as proposed in the Norwegian patent application 20111641 entitled “Method for combined cleaning and plugging in a well, washing tool for directional washing in a well, and use of the washing tool” and by the Norwegian patent application 20120099 entitled “Apparatus and metthod for positioning of a fluidized plugging material in an oil well or gas well", both filed in the name of the present applicant.
- step (A) of the method may include the substeps of:
- the perforation tool may be a perforation gun of a type known per se.
- the perforation may be carried out in an undamaged/unperforated portion of the pipe body or in an already perforated portion of the pipe body if the number, distribution and design of the perforations are not sufficient to ensure god circulation for subsequent washing and plugging.
- a preferred distribution of the perforations in the pipe body may be in the order of 12 per foot in a 135/45 degrees' phase within said longitudinal section.
- the plug may remain set in the entire cross section of the well. This may be advantageous in, for example, a case in which a barrier element set earlier has lost its integrity and there is undesired fluid production behind a casing or a casing liner from a part of the formation below.
- a plug covering the entire cross section could isolate the formation, from which the undesired fluid production is coming, from the rest of the well.
- step (A) of the method may include the following substeps:
- the steps of perforation (A2) and washing (A3, A4) may be carried out in separate trips down the well.
- the steps of perforation (A2) and washing (A3, A4) may be carried out in one and the same trip into the well.
- a combined perforation and washing apparatus is described in the Norwegian patent application 20111641 mentioned.
- the perforation tool and the washing tool may be releasable in combination or individually from the string.
- the method may further include leaving the perforation tool in the well. This may be practical to save operation time if the perforation tool can be "hidden” in the well and/or if the perforation tool is a drillable one.
- the method may further include leaving the washing tool in the well. This may be advantageous in order to save operation time and/or to use the washing tool as a base for the plug that is to be established. It may be advantageous if the washing tool is a drillable one.
- the method may include the step of:
- the method may include providing one or more perforations in a portion of the pipe body outside the longitudinal section in which the plug has been set. This may be necessary if existing production perforations have been blocked or closed off from the rest of the well in connection with the isolating.
- the fluidized plugging material may be, for example, cement slurry, unconsolidated mass or a combination thereof.
- Figures 1-8 show, in side views, simplified schematic sections of a well in different stages in accordance with a first embodiment of the method of the present invention.
- Figures 9-10 show, in side views, simplified schematic sections of a well in different stages in accordance with a second embodiment of the method of the present invention.
- the reference numeral 1 indicates a subterranean well as used in the method of the present invention.
- the well 1 has been drawn in a schematic and greatly simplified manner, and well elements which are not central to the invention may have been left out of the drawings.
- Well fluids and cement barriers already established, which will be known to a person skilled in the art, are not shown in the figures.
- a casing 21 extends down the well 1, forming a radial boundary between a well path 2 and a surrounding formation 7.
- a pipe body 211 in the form of a casing liner is hung from the lower portion of the casing 21, extending down into a producing part of the well 1.
- the casing liner 211 is formed with perforations 212, through which fluids may flow from the formation 7 into the well 1.
- connection pipe 210 and the casing liner 211 together form a pipe string which extends throughout the length of the well 1.
- the pipe string is formed with one and the same inner diameter.
- the purpose of the method of the present invention is to isolate formation zones, from which undesired fluids are entering the well 1, from the rest of the well 1, whether it be undesired fluid flow through producing perforations 212 as shown in the figures 1-8, or undesired fluid flow behind casing 21 or casing liners 211 as shown in the figures 9-10.
- FIG 1 a producing well 1 is shown. An interface between water and oil has been drawn upwards and into the producing zone of the formation 7, so that an undesired flow of water, indicated by arrows in towards the perforations 212, has completely or partially replaced the flow of hydrocarbons into the well 1. To remove or at least reduce the undesired water flow into the well 1, there is a wish to isolate the zone, from which the undesired production is coming, from the rest of the well 1.
- the reference numeral 221 indicates a safety/production valve of a type known per se.
- Figure 2 shows the well 1 after a perforation tool 33 has been lowered into the casing liner 211 and placed along a longitudinal section LI opposite the perforations 212.
- the perforation tool 33 may be a perforation gun of a type known per se.
- the perforation tool 33 is used to form new perforations 213 in the casing liner 211 which is to be used in subsequent washing and plugging as shown in figure 3.
- Figure 3 shows the well 1 after the string 3 with the perforation tool 33 has been pulled out and new perforations 213 have been formed in the casing liner 211.
- a combined washing and plugging tool 35 is then lowered into the well 1 within the casing liner 211 as shown in figure 4.
- Perforation and cleaning and plugging may be carried out in the same trip or in separate trips down the well 1.
- a washing fluid not shown is carried through the string 3, into the casing liner 211 and further out into an annulus 5 via the perforations 213. It may be an advantage if the washing fluid is directed substantially radially into the annulus 5 by means of a directional-control means 351, as described in the Norwegian patent application 20111641.
- a washing fluid at great velocity may remove various particles, deposits and remains from earlier downhole operations, so that a fluidized plugging material which is subsequently to be carried into the annulus 5 may flow freely and be adhered in a better way.
- the fluidized plugging material is pumped through the string 3 and out into the casing liner 211 and thereby also into the annulus 5 via the perforations 213 in the casing liner 211, so that a plug 25 is formed over the longitudinal section LI, as shown in figure 5.
- the plug 25 of cured plugging material extends over the entire cross section Tl of the well 1. It may be an ad- vantage if an apparatus as described in the Norwegian patent application 20120099 is used in order to further displace and distribute the fluidized plugging material in the casing liner 211 and out into the annulus 5. The latter apparatus is not shown in the figures connected to the present document.
- FIG 6 the well 1 is shown after a central through-going portion of the plug 25 has been drilled away by means of a drilling tool 31.
- a cross-sectional section T3 of the plug 25 outside the casing liner 211 is left inside the longitudinal section LI .
- the remaining cross-sectional section T3 of the plug 25 outside the casing liner 211 forms a barrier 51 in the annulus 5 between the casing liner 211 and the formation 7, thereby isolating the well 1 from the reservoir zone from which the undesired water production was coming.
- Figure 7 shows the well 1 after it has been fully isolated for the above-mentioned purposes
- figure 8 shows the well 1 after new perforations 214 have been formed in the casing liner 211 at a distance from the longitudinal section LI so that there may be production from another zone without undesired water drive.
- the distance between the longitudinal section LI and the new perforations 214 may be very large, maybe in the order of kilometres.
- Figure 9 shows a well 1 in which an undesired water flow, indicated by arrows, is coming from a formation zone below the production zone and is flowing in behind the casing liner 211.
- a plug is set in the entire cross section of the well, as shown in figure 10, in a portion below perforations 212 already producing, by means of steps indicated in the figures 2-5.
- the plug 25 isolates the well 1 from the zone from which the undesired water production was coming and the production may be resumed via the perforations 212 existing already.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20120275A NO336527B1 (en) | 2012-03-09 | 2012-03-09 | Method of zone isolation in an underground well |
PCT/NO2013/050046 WO2013133720A1 (en) | 2012-03-09 | 2013-03-06 | Method for zone isolation in a subterranean well |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2823140A1 true EP2823140A1 (en) | 2015-01-14 |
EP2823140A4 EP2823140A4 (en) | 2015-03-18 |
EP2823140B1 EP2823140B1 (en) | 2017-11-15 |
Family
ID=49117096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13757768.0A Active EP2823140B1 (en) | 2012-03-09 | 2013-03-06 | Method for zone isolation in a subterranean well |
Country Status (7)
Country | Link |
---|---|
US (1) | US20150027705A1 (en) |
EP (1) | EP2823140B1 (en) |
AU (1) | AU2013228114B2 (en) |
CA (1) | CA2897621C (en) |
DK (1) | DK2823140T3 (en) |
NO (1) | NO336527B1 (en) |
WO (1) | WO2013133720A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO339082B1 (en) | 2012-03-09 | 2016-11-14 | Hydra Systems As | Procedure for combined cleaning and plugging in a well |
NO339191B1 (en) * | 2013-09-06 | 2016-11-14 | Hydra Systems As | Method of isolating a permeable zone in an underground well |
RU2612693C1 (en) * | 2016-02-12 | 2017-03-13 | Закрытое акционерное общество "ХИМЕКО-ГАНГ" | Method to reduce water inflow in production wells without lifting of downhole pumping equipment |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012096580A1 (en) * | 2011-01-12 | 2012-07-19 | Hydra Systems As | Method for combined cleaning and plugging in a well, a washing tool for directional washing in a well, and uses thereof |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4083406A (en) * | 1976-11-18 | 1978-04-11 | Metz Thomas L | Method and apparatus for sealing drill casing |
US4589490A (en) * | 1984-11-08 | 1986-05-20 | Conoco Inc. | Well bore recompletion |
US4759408A (en) * | 1987-06-08 | 1988-07-26 | Texaco Inc. | Method of shutting off a portion of a producing zone in a hydrocarbon producing well |
US5402850A (en) * | 1994-01-13 | 1995-04-04 | Lalande; Phillip T. | Methods of using reverse circulating tool in a well borehole |
NO981998D0 (en) * | 1998-05-04 | 1998-05-04 | Henning Hansen | Method of multi-phase sealing borehole plugging used for hydrocarbon production or injection of downhole liquids or exploratory boreholes |
US6394184B2 (en) * | 2000-02-15 | 2002-05-28 | Exxonmobil Upstream Research Company | Method and apparatus for stimulation of multiple formation intervals |
US6595289B2 (en) * | 2001-05-04 | 2003-07-22 | Weatherford/Lamb, Inc. | Method and apparatus for plugging a wellbore |
US20080314591A1 (en) * | 2007-06-21 | 2008-12-25 | Hales John H | Single trip well abandonment with dual permanent packers and perforating gun |
US7640983B2 (en) * | 2007-07-12 | 2010-01-05 | Schlumberger Technology Corporation | Method to cement a perforated casing |
EP2192263A1 (en) * | 2008-11-27 | 2010-06-02 | Services Pétroliers Schlumberger | Method for monitoring cement plugs |
NO339025B1 (en) * | 2012-02-03 | 2016-11-07 | Hydra Systems As | Method of establishing an annular barrier in an underground well |
NO335689B1 (en) * | 2012-02-17 | 2015-01-19 | Hydra Systems As | Procedure for establishing a new well path from an existing well |
NO339082B1 (en) * | 2012-03-09 | 2016-11-14 | Hydra Systems As | Procedure for combined cleaning and plugging in a well |
-
2012
- 2012-03-09 NO NO20120275A patent/NO336527B1/en unknown
-
2013
- 2013-03-06 US US14/381,540 patent/US20150027705A1/en not_active Abandoned
- 2013-03-06 CA CA2897621A patent/CA2897621C/en active Active
- 2013-03-06 WO PCT/NO2013/050046 patent/WO2013133720A1/en active Application Filing
- 2013-03-06 DK DK13757768.0T patent/DK2823140T3/en active
- 2013-03-06 AU AU2013228114A patent/AU2013228114B2/en active Active
- 2013-03-06 EP EP13757768.0A patent/EP2823140B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012096580A1 (en) * | 2011-01-12 | 2012-07-19 | Hydra Systems As | Method for combined cleaning and plugging in a well, a washing tool for directional washing in a well, and uses thereof |
Non-Patent Citations (4)
Title |
---|
"HydraArchimedes", , 5 February 2012 (2012-02-05), XP055167728, Retrieved from the Internet: URL:http://web.archive.org/web/20120205234753/http://hydrawell.no/products/hydraarchimedes [retrieved on 2015-02-05] * |
ARNE G. LARSEN: "HYDRAWASH(TM) - a new approach to get cement behind casing without milling", P&A FORUM WORKSHOP, 9 June 2011 (2011-06-09), XP055167754, Sola, Norway * |
See also references of WO2013133720A1 * |
THOMAS EUGENE FERG ET AL: "Novel Approach to More Effective Plug and Abandonment Cementing Techniques", SPE ARCTIC AND EXTREME ENVIRONMENTS CONFERENCE AND EXHIBITION, MOSCOW, RUSSIA, 18 October 2011 (2011-10-18), pages 1-13, XP055167744, DOI: 10.2118/148640-MS ISBN: 978-1-61-399174-9 * |
Also Published As
Publication number | Publication date |
---|---|
CA2897621A1 (en) | 2013-09-12 |
WO2013133720A1 (en) | 2013-09-12 |
CA2897621C (en) | 2020-09-22 |
US20150027705A1 (en) | 2015-01-29 |
EP2823140B1 (en) | 2017-11-15 |
AU2013228114A1 (en) | 2014-09-18 |
NO20120275A1 (en) | 2013-09-10 |
EP2823140A4 (en) | 2015-03-18 |
NO336527B1 (en) | 2015-09-21 |
DK2823140T3 (en) | 2018-02-05 |
AU2013228114B2 (en) | 2015-12-17 |
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