WO2015131003A1 - Pressure releaving means - Google Patents
Pressure releaving means Download PDFInfo
- Publication number
- WO2015131003A1 WO2015131003A1 PCT/US2015/017902 US2015017902W WO2015131003A1 WO 2015131003 A1 WO2015131003 A1 WO 2015131003A1 US 2015017902 W US2015017902 W US 2015017902W WO 2015131003 A1 WO2015131003 A1 WO 2015131003A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plug
- packer
- tubular member
- outer plug
- central bore
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/004—Indexing systems for guiding relative movement between telescoping parts of downhole tools
- E21B23/006—"J-slot" systems, i.e. lug and slot indexing mechanisms
-
- 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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1294—Packers; Plugs with mechanical slips for hooking into the casing characterised by a valve, e.g. a by-pass valve
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
-
- 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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1293—Packers; Plugs with mechanical slips for hooking into the casing with means for anchoring against downward and upward movement
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
Definitions
- the present disclosure relates to methods and apparatus for isolating zones in a subterranean formation in general and in particular to methods and apparatus for releasing the pressure around sealing elements.
- sealing elements may be components of a production packer, an open hole production packer, seal adapter, pressure chamber seal adapter (with charged high pressure chamber on board), a liner hanger packer, a full bore liner top packer, a straddle type stimulation tool, a hybrid type stimulation tools (hydroelement and mechanical packer), a hydroelement made from swellable rubber compounds, an open hole seal or a cased hole seal all of which may be mechanically, hydraulically, hydrostatically or pressure chamber operated.
- Production packers are designed to be located between the casing or liner and a working or production tubing in a well.
- one difficulty that exists is that the packer may be difficult to remove or retrieve after they are set.
- One of the reasons for this is that such packers are designed to isolate one zone from another and will therefore in practice include a pressure differential across the packer. Such pressure differential is known to impair the ability of the packer to be removed.
- an apparatus for releasing pressure within a pressurized annulus around a tool string of a well bore comprising a central tubular member having a central bore therethrough extending between first and second ends.
- the apparatus further comprises an outer plug slidably locatable within a first end of the tubular member and having a central bore therethrough and an inner plug slidably locatable within the central bore of the outer plug.
- the first end cap may be operably connected to the second plug such that axial movement of the end cap retracts the second plug from the central bore of the fist plug.
- the apparatus may further comprise a retraction member operably connected to and movable with the inner plug, the retracting member being adapted to engage the inner plug after a predetermined length of travel so as to draw the outer plug out of the central tubular member thereafter.
- the retraction member may comprise a retraction sleeve surrounding the inner plug along a parallel axis therewith.
- the retraction sleeve may include fluid flow passages therethrough.
- the retraction sleeve may surround the outer plug and includes an inwardly oriented lip positioned to engage a corresponding outwardly oriented lip on the outer plug.
- the outer plug may include a centralizer body extending therefrom adapted to maintain the outer plug in axial alignment with the central bore of the tubular member after the removal of the outer plug therefrom.
- a packer comprising a central tubular member having a central bore therethrough extending between first and second ends and a sealing element extending around the central tubular member adapted to be longitudinally compressed so as to axially expand the sealing element into contact with a surface of a well bore.
- the packer further comprises an outer plug slidably locatable within a first end of the tubular member and having a central bore therethrough and an inner plug slidably locatable within the central bore of the outer plug.
- the packer may further comprise a first end cap operably connected to the second plug such that axial movement of the end cap retracts the second plug from the central bore of the fist plug.
- the packer may further comprise a retraction member operably connected to and movable with the inner plug, the retracting member being adapted to engage the inner plug after a predetermined length of travel so as to draw the outer plug out of the central tubular member thereafter.
- the retraction member may comprise a retraction sleeve surrounding the inner plug along a parallel axis therewith.
- the retraction sleeve may include fluid flow passages therethrough.
- the retraction sleeve may surround the outer plug and includes an inwardly oriented lip positioned to engage a corresponding outwardly oriented lip on the outer plug.
- the outer plug may include a centralizer body extending therefrom adapted to maintain the outer plug in axial alignment with the central bore of the tubular member after the removal of the outer plug therefrom.
- the sealing elements may comprise a plurality of tubular elements disposed annularly around the central member.
- the tubular elements may include annular springs encased therein.
- the packer may further include top and bottom extrusion blocks disposed annularly around the tubular member to opposed sides of the sealing element.
- the top extrusion block may include an extended portion lip to engage a corresponding lip extending radially outwardly from a body secured to the inner plug after a predetermined length of travel so as to draw the top extrusion block upwards thereby releasing the sealing element.
- methods for releasing pressure within a pressurized annulus of a well bore comprising providing an outer plug slidably locatable within a first end of the tubular member and having a central bore therethrough and providing a inner plug slidably locatable within the central bore of the first plug.
- the methods further comprise longitudinally retracting the inner plug from sealed engagement within the central bore of the outer plug member so as to permit fluid to flow therethrough and engaging the outer plug with a retraction body operably connected to the inner plug extending adapted to engage the inner plug after a predetermined length of travel so as to draw the outer plug out of the central tubular member thereafter.
- the method may further comprise engaging a top extrusion block of surrounding the tubular member with the retraction body after a predetermined length of travel so as to draw the top extrusion block back thereafter.
- Figure 1 is a cross-sectional view of a wellbore having a liner hanger according to a first embodiment located therealong.
- Figure 2 is a perspective view of the packer according to a first embodiment.
- Figure 3 is a cross sectional view of the packer of Figure 2.
- Figure 4 is a detailed cross view of the extending arms of the packer of
- Figure 5 is a detailed exploded view of arms of the packer of Figure 2 at a second position.
- Figure 6 is a detailed plan view of the indexing slots of Figure 2.
- Figure 7 is a detailed layout of the indexing slots of Figure 2.
- Figure 8 is a detailed cross view of the extending arms of the packer of
- Figure 9 is a detailed perspective view of first end of the packer of Figure 2
- Figure 10 is a detailed perspective view of first end of the packer of Figure 2 at a second position.
- Figure 11 is a detailed perspective view of first end of the packer of Figure 2
- Figure 12 is a side view of the packer of Figure 2 located within a well at an expanded position.
- Figure 13 is a detailed cross sectional view of the first and second unloader stage according to a further embodiment of the present disclosure.
- Figure 14 is a detailed perspective view of the collet arms according to a further embodiment of the present disclosure.
- Figure 15 is a detailed perspective view of the sealing elements of the packer of Figure 2 according to a further embodiment of the present disclosure.
- a wellbore 10 is drilled into the ground 8 to a production zone 6 by known methods.
- the production zone 6 may contain a horizontally extending hydrocarbon bearing rock formation or may span a plurality of hydrocarbon bearing rock formations such that the wellbore 10 has a path designed to cross or intersect each formation.
- the wellbore includes a vertical section 12 having a valve assembly or Christmas tree 14 at a top end thereof and a bottom or production section 16 which may be horizontal or angularly oriented relative to the horizontal located within the production zone 6.
- a production string 18 is located therein with at a packer 20 to isolate a zone 19 within the well.
- a packer according to a first embodiment is illustrated generally at 20.
- the packer 20 extends between first and second ends, 22 and 24, respectively, and is formed around a central tubular member or mandrel 26.
- the central mandrel 26 includes the second end 24 which is operable to have a production string 18 connected thereto according to known methods such as threading and the like.
- the packer 20 includes gripping arm slips 40 proximate to the second end 24, a release section 100 proximate to the first end 22 and at least one seal element 90 between top and bottom extrusion blocks, 92 and 94.
- FIG. 3 a cross sectional view of the packer 20 is illustrated.
- the packer 20 includes an elongate central mandrel 26 extending between first and second ends, 28 and 30, respectively.
- the second end 30 of the mandrel forms the second end 24 of the packer.
- the mandrel 26 rotatably supports a collet arms 72 and the gripping arm slips 40 therearound as will be more fully described below.
- the slip 40 comprises a plurality of longitudinally extending arms 42 extending in a direction generally towards the first end 22 of the packer.
- the arms 42 have proximate 43 and distal ends 44 wherein the distal ends have outwardly oriented bore engaging surfaces 48 as are commonly known and an inner angled surface 46.
- the arms 42 include a notch 41 on the outside surface thereof for receiving a portion of the cage therein as will be more fully described below.
- the arms 42 extend substantially parallel to the mandrel 26.
- the arms 42 may be located within slots 50 of a slip cage 52 so as maintain a relative position and alignment of the arms 42 around the mandrel 26.
- the arms 42 may be retained within the slip cage 54 by locating a portion 56 of the slip cage between the slots 50 and the top end of the slip cage. As illustrated.
- the arms 42 are also maintained proximate to the slip cage 54 with a slip housing
- the slip housing 58 includes bores therethrough to permit the removal of debris from between the arms and the mandrel.
- each arm includes at least one bore 64 in a bottom thereof sized to receive a biasing pin 66 with a corresponding spring
- the slip 40 includes a cone 60 associated therewith comprising a tubular body slidably located around the mandrel 26.
- the cone 60 includes an angled trailing surface 62 corresponding to the bottom surface 46 of the arms 42.
- the slip 40 further includes a drive housing 70 located towards the second end 24 of the packer 20.
- the drive housing 70 comprises a tubular body engaging with and abutting against the slip housing 58 and the slip cage 52 so as to be operable to move the slip housing, slip cage and arms longitudinally along the mandrel.
- the drive housing further includes a plurality of longitudinally extending collet arms 72 extending in a direction towards the second end 24 of the packer.
- the collet arms include a radially extended contact surface 74 and are radially flared from the packer as illustrated in Figures 2 and 3 so as to cause the contact surface 74 to engage upon the liner of the wellbore and cause drag therewith.
- the contact surfaces 74 may be substantially the same width as the collet arms 72 or may optionally have tapered edges as illustrated in Figure 14 to provide additional space for fluid flow therepast.
- the drive housing includes a plurality of pins 76 extending radially inwardly therefrom which are received with in a profiled groove 78 on the outside surface of the mandrel.
- a perspective view of the mandrel 26 is illustrated.
- the profiled groove 78 extends around the mandrel 26 and includes a plurality of indexing notches 80 located along the edge towards the second end 24 of the packer.
- the profiled groove 78 further includes alternating long and short slots, 82 and 84, respectively along the edge towards the first end 22 of the packer.
- the indexing notches 80 are arranged to be located intermediate the long and short 82 and 84 slots with angled walls 86 and 88 on one side thereof each so as to cause the pins 76 to be alternatingly advanced between the long and short slots as the mandrel is cycled forwards and backwards relative to the drive housing as illustrated in Figure 7.
- the drive housing will be prevented from moving towards the first end 22 of the packer thereby preventing the arms 42 from being extended.
- the drive housing 70 will be permitted to move towards the first end 22 thereby extending the arms 42.
- the packer 20 includes seal elements 90 located around the mandrel 26 at a position towards the first end 22 from the arms 42 between the top and bottom extrusion blocks 92 and 94.
- the bottom extrusion block is secured to the cone 60 and the top extrusion block is secured to the mandrel 26.
- the pins 76 when the pins 76 are located within the long slots 84 and the mandrel pressed toward the second end 24, the arms 42 will extend engaging the well bore wall.
- the seal elements may include at least one annular spring element 95 therein providing a radially non-compressible core in each seal element so as to prevent the seal element 90 from extruding past the top or bottom extrusion block.
- the seal elements 90 may also include a spacer therebetween 93.
- the packer may include 3 seal elements 90 however it will be appreciated that more or less than 3 may also be utilized.
- the release section 100 located proximate to the first end 22 of the packer 20 is illustrated.
- the release section includes a top collar 102 forming the first end 22 of the packer.
- the top collar 102 may include a threaded bore 104 into the end thereof for connection to the production string as is commonly known.
- the release section 100 includes a bypass mandrel 106 secured to the top collar 102 with first and second bypass plugs, 108 and 110 respectively.
- the first and second bypass plugs 108 and 1 10 are adapted to sequentially permit an increasing amount of material past the packer as will be more fully described below.
- the bypass mandrel 106 is secured to the top collar 102 at a first end 112 of thereof.
- the first bypass plug 108 is secured with within a bore 114 at a second end 116 of the bypass mandrel by fasteners 118 or the like.
- the first bypass plug 108 comprises a body having a cylindrical seal section 120 with at least one seal 122 extending therearound which is sized to be sealably received within a corresponding bore 130 of the second bypass plug 110.
- the first bypass plug 108 may include two seals, however it will be appreciated that one or three or more seals 122 may also be utilized as illustrated in Figure 13.
- the second bypass plug 110 comprises a tubular body extending between first and second ends, 132 and 134 respectively and having a central bore 130 extending therethrough.
- the second bypass plug 110 includes a cylindrical seal section 136 extending from the second end 134 with at least one seal 138 extending therearound.
- the second bypass plug 110 may include two seals, however it will be appreciated that one or three or more seals may also be utilized.
- the central mandrel 26 includes a central bore 140 sized to sealably receive the seal section 136 of the second bypass plug 110 therein.
- the second bypass plug 110 may include a centralizing extension 142 extending therefrom for maintaining the second bypass plug 110 in axial alignment with the central mandrel 26 when the second bypass plug 1 10 is removed therefrom as illustrated in Figure 11.
- the first bypass plug 108 may also include a radiued annular flange 115 sized and shaped to be sealably received against a corresponding filleted recession 117 in the first end 132 of the second bypass plug 110 around the central bore 130 thereof.
- annular flange 115 will bear against the recession to provide an additional seal therebetween.
- the top collar 102 when a user wishes to release the packer, the top collar 102 is drawn in a direction generally indicated at 160 away from the second end 24 of the packer.
- the top collar 102 pulls the bypass mandrel 106 with it drawing the first bypass plug 108 so as to disengage it from the central bore 130 of the second bypass plug 110 thereby permitting full flow of material therethrough in a direction generally indicated at 170.
- the bypass mandrel 106 includes an extension sleeve 144 with a distal interior ridge 146.
- the interior ridge 146 is adapted to engage a corresponding exterior ridge 148 on the first end 132 of the second bypass plug 110.
- the central mandrel 26 includes and extension sheath 150 extending from the first end 28 thereof.
- the extension sheath includes an interior ridge 152 at a distal end 156 thereof adapted to engage an exterior ridge 154 on the bypass mandrel 106.
- the extension sheath 150 and thereby the central mandrel 26 will be drawn in the retraction direction as well. It will be appreciated that movement of the central mandrel 26 will cause the cone 60 to be pulled away from the arms 42 thereby permitting the arms to disengage from the well bore wall as well as decompressing the sealing elements.
- the entire packer 20 may be removed or repositioned as desired. If the packer 20 is desired to be repositioned, it may be positioned at the desired location in the well and a downward force applied
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2937893A CA2937893A1 (en) | 2014-02-28 | 2015-02-27 | Pressure releaving means |
US15/122,115 US20170009556A1 (en) | 2014-02-28 | 2015-02-27 | Pressure releaving means |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201461946409P | 2014-02-28 | 2014-02-28 | |
US61/946,409 | 2014-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015131003A1 true WO2015131003A1 (en) | 2015-09-03 |
Family
ID=54009639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2015/017902 WO2015131003A1 (en) | 2014-02-28 | 2015-02-27 | Pressure releaving means |
Country Status (4)
Country | Link |
---|---|
US (1) | US20170009556A1 (en) |
AR (1) | AR099599A1 (en) |
CA (1) | CA2937893A1 (en) |
WO (1) | WO2015131003A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5311954A (en) * | 1991-02-28 | 1994-05-17 | Union Oil Company Of California | Pressure assisted running of tubulars |
US6220357B1 (en) * | 1997-07-17 | 2001-04-24 | Specialised Petroleum Services Ltd. | Downhole flow control tool |
US20040149435A1 (en) * | 2003-02-05 | 2004-08-05 | Henderson William D. | Well screen assembly and system with controllable variable flow area and method of using same for oil well fluid production |
US20060278391A1 (en) * | 2004-02-02 | 2006-12-14 | Yanmei Li | Hydrogel for use in downhole seal applications |
US20120247767A1 (en) * | 2009-11-13 | 2012-10-04 | Packers Plus Energy Services Inc. | Stage tool for wellbore cementing |
-
2015
- 2015-02-27 US US15/122,115 patent/US20170009556A1/en not_active Abandoned
- 2015-02-27 CA CA2937893A patent/CA2937893A1/en not_active Abandoned
- 2015-02-27 WO PCT/US2015/017902 patent/WO2015131003A1/en active Application Filing
- 2015-02-27 AR ARP150100605A patent/AR099599A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5311954A (en) * | 1991-02-28 | 1994-05-17 | Union Oil Company Of California | Pressure assisted running of tubulars |
US6220357B1 (en) * | 1997-07-17 | 2001-04-24 | Specialised Petroleum Services Ltd. | Downhole flow control tool |
US20040149435A1 (en) * | 2003-02-05 | 2004-08-05 | Henderson William D. | Well screen assembly and system with controllable variable flow area and method of using same for oil well fluid production |
US20060278391A1 (en) * | 2004-02-02 | 2006-12-14 | Yanmei Li | Hydrogel for use in downhole seal applications |
US20120247767A1 (en) * | 2009-11-13 | 2012-10-04 | Packers Plus Energy Services Inc. | Stage tool for wellbore cementing |
Also Published As
Publication number | Publication date |
---|---|
AR099599A1 (en) | 2016-08-03 |
US20170009556A1 (en) | 2017-01-12 |
CA2937893A1 (en) | 2015-09-03 |
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