WO2012128759A1 - Well tool assemblies with quick connectors and shock mitigating capabilities - Google Patents
Well tool assemblies with quick connectors and shock mitigating capabilities Download PDFInfo
- Publication number
- WO2012128759A1 WO2012128759A1 PCT/US2011/029412 US2011029412W WO2012128759A1 WO 2012128759 A1 WO2012128759 A1 WO 2012128759A1 US 2011029412 W US2011029412 W US 2011029412W WO 2012128759 A1 WO2012128759 A1 WO 2012128759A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- perforating
- connectors
- assembly
- shock
- connection
- Prior art date
Links
- 230000035939 shock Effects 0.000 title claims abstract description 77
- 230000000116 mitigating effect Effects 0.000 title claims abstract description 9
- 230000000712 assembly Effects 0.000 title description 6
- 238000000429 assembly Methods 0.000 title description 6
- 239000006096 absorbing agent Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000005474 detonation Methods 0.000 claims abstract description 21
- 238000010304 firing Methods 0.000 claims description 31
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
-
- 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
- E21B43/119—Details, e.g. for locating perforating place or direction
Definitions
- the present disclosure relates generally to equipment utilized and operations performed in conjunction with subterranean wells and, in an embodiment described herein, more particularly provides a well tool assembly with quick connectors and shock mitigating capabilities.
- shock absorbers have been used in the past in attempts to prevent damage to well equipment resulting from firing perforating guns and other events.
- a shock absorber is interconnected between a perforating assembly and the well equipment (such as, a packer, gravel packing equipment, instruments, etc.) to be protected from shock loads.
- shock loads are transmitted in a very short amount of time (e.g., -10-30 milliseconds), and conventional shock absorbers are either too rigid to react adequately to the shock, or too compliant to absorb the shock. Therefore, it will be appreciated that improvements are needed in the art of mitigating shock for well assemblies.
- Improvements are also needed in the art of connecting well tool assemblies. Such improvements could reduce the amount of time needed to connect perforating devices or other well tools, and could prevent damage to connectors used to connect well tools.
- shock absorbers are interconnected in a perforating assembly.
- connections are made between well tools without threading .
- a method described below can include interconnecting a well tool in a well tool assembly with a shock mitigating connection, the interconnecting being performed without threading, and positioning the well tool assembly in a wellbore.
- the method may be used for well perforating assemblies, or for other types of well tool assemblies.
- a well perforating assembly is
- the perforating assembly can include at least two perforating devices, a detonation train extending through the perforating devices, and a shock absorber positioned between the perforating devices.
- a method of assembling a perforating assembly is described below.
- the method can include, prior to installing the perforating assembly in a wellbore, pushing one perforating device connector into another perforating device connector without threading the
- connectors together, thereby: a) preventing disconnection of the connectors and b) making a connection in a detonation train .
- a well system which can include a perforating assembly including multiple perforating guns and multiple shock absorbers. Each shock absorber is interconnected between at least two of the perforating guns.
- FIG. 1 is a representative partially cross-sectional view of a well system and associated method which can embody principles of the present disclosure.
- FIG. 2 is an enlarged scale representative partially cross-sectional view of a prior art perforating assembly.
- FIG. 3 is a representative cross-sectional view of a perforating assembly which can embody principles of this disclosure .
- FIG. 4 is a further enlarged scale cross-sectional view of detail 4 in FIG. 3.
- FIG. 5 is a still further enlarged scale cross- sectional view of detail 5 in FIG. 4.
- FIG. 6 is a representative partially cross-sectional view of another configuration of the well system and method.
- FIG. 1 Representatively illustrated in FIG. 1 is a well system
- a perforating assembly 12 is positioned in a wellbore 14 for forming perforations 16 through casing 18 lining the wellbore.
- the perforating assembly 12 can include any number of perforating devices, such as a firing head 20 and
- the firing head 20 fires the
- perforating guns 22 in response to a particular stimulus (e.g., pressure levels, pressure pulses, a telemetry signal, a bar dropped through a tubular string to the firing head, etc.).
- a particular stimulus e.g., pressure levels, pressure pulses, a telemetry signal, a bar dropped through a tubular string to the firing head, etc.
- Any type of firing head, and any type of perforating guns, may be used in the perforating assembly 12 in keeping with the principles of this disclosure.
- firing head 20 connected above the perforating guns 22 is depicted in FIG. 1, it will be appreciated that any number or position of firing head(s) may be used, as desired.
- the firing head 20 could be connected at a lower end of the perforating
- multiple firing heads could be used, a separate firing head could be used for each perforating gun, etc.
- packer 24 is used herein as one example of a type of well equipment which can be protected using the principles of this disclosure, but it should be clearly understood that any other types of well equipment (e.g., anchors, hangers, instruments, other perforating devices, etc.) may be protected in other examples.
- well equipment e.g., anchors, hangers, instruments, other perforating devices, etc.
- a shock absorbing connection 26 is disposed between each adjacent pair of the perforating guns 22, and a shock absorbing connection is also disposed between the firing head 20 and the uppermost perforating gun.
- the connections 26 also allow the perforating devices (firing head 20 and perforating guns 22) to be quickly assembled to each other prior to
- connection 26 is depicted in FIG. 1 between each adjacent pair of the perforating guns 22, it will be appreciated that the connections could be otherwise
- each connection only has to absorb shock generated due to firing of the adjacent perforating device(s), and accumulation of the shock loads along the perforating assembly is prevented, or at least beneficially mitigated. Greater or fewer numbers of the connections 26 may be used in the perforating assembly 12 as needed to achieve a desired level of shock mitigation.
- the perforating assembly 28 includes the perforating guns 22, with each perforating gun including perforating charges 30, a charge carrier 32 and detonating cord 34 in a generally tubular gun body 36.
- the perforating assembly 28 of FIG. 2 includes a rigid, threaded connection 38 between the shock absorbing connections 26 used in the system 10.
- a connector 40 having opposing externally-threaded ends is threaded into one perforating gun 22, and another connector 42 having opposing externally- and internally-threaded ends is threaded into another perforating gun 22.
- connection 38 has no shock absorbing capability, and threading the connectors 40, 42 to each other can be difficult when the guns 22 are long and/or heavy, sometimes resulting in damage to threads on the connectors .
- connection 26 used in the system 10 is representatively illustrated in FIG. 3.
- the connection 26 may be used between perforating guns 22, between a
- connection 26 may also be used in perforating assemblies other than the perforating
- connection 26 includes a connector 44 which is attached to a perforating device (such as a perforating gun or firing head, not shown), and another connector 46 which is depicted in FIG. 3 as being attached to a perforating gun 22.
- the connectors 44, 46 may each be attached to the respective perforating guns 22, firing head 20 or other perforating devices or other well tools by threading or any other suitable means.
- connector 44 can be inserted and pushed into the other connector 46 without threading. Once connected in this manner, an engagement device 48 prevents disconnection of the connectors 44, 46.
- the engagement device 48 permits the connector 44 to displace in one direction longitudinally toward the other connector 46, but prevents the connector 44 from displacing in the opposite longitudinal direction relative to the connector 46.
- the connection 26 can be longitudinally compressed, but the device 48 prevents the connection from being elongated longitudinally.
- connection 26 (including the detonating cord 34, boosters 56, etc.) which extends through the connection 26.
- connection 26 includes shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the shock absorbers 50, 52 disposed between the
- the shock absorbers 50, 52 function to absorb shock loads which would otherwise be transmitted through the connection 26.
- the shock absorbers 50, 52 are preferably made of a material which can deform appropriately to absorb the shock loads resulting from firing of the perforating devices.
- Some acceptable materials for the shock absorbers 50, 52 can include brass, aluminum, rubber, foamed materials, or any other shock absorbing materials.
- the shock absorbers 50, 52 may be annular-shaped as depicted in FIG. 3, or they could have any other shapes, such as round, square, T- or I-shaped cross-sections, etc.
- the size, shape, material and/or other characteristics of the shock absorbers 50, 52 may be customized for their placement in the perforating assembly 12, position in the well, size and length of the adjacent perforating devices or other well tools, etc.
- shock absorbers 50, 52 are illustrated in the connection 26 example of FIG. 3, in other examples different numbers of shock absorbers (including one) may be used.
- detonation train 54 is depicted as extending through the shock absorbers 50, 52, such an arrangement is not necessary in keeping with the principles of this disclosure.
- connection 26 allows for longitudinal
- the connectors 44, 46 when a compressive shock load is transmitted to the connection, the connectors will compress somewhat, with the shock absorbers 50, 52 thereby absorbing the compressive shock load. In this manner, transmission of the shock load across the connection 26 is prevented, or is at least significantly mitigated.
- the engagement device 48 comprises a segmented or longitudinally split sleeve 58 having a series of relatively coarse pitch ramp-type profiles 60 on an exterior thereof, and a series of relatively fine pitch profiles 62 on an interior thereof.
- the profiles 60 , 62 may be formed as threads on the engagement device 48 , with the respective connectors 46 , 44 having complementarily shaped profiles formed thereon.
- the profiles 60 could be formed as 45-degree buttress threads, and the profiles 62 could be formed as a "phonograph" finish (very fine grooves).
- the connectors 44 , 46 are not threaded to each other with the engagement device 48 . Instead, the connector 44 is
- the engagement device 48 prevents the connector 44 from being withdrawn from the connector 46 .
- the profiles 62 will grip the outer surface of the connector 44 , so that the sleeve 58 attempts to displace with the connector 44 .
- the ramps of the profiles 60 in engagement with the connector 46 , prevent downward (as viewed in FIG. 5 ) displacement of the connector 44 and sleeve 58 , and cause the sleeve to be compressed radially inward.
- the inward compression of the sleeve 58 causes the profiles 62 to more securely grip the outer surface of the connector 44 .
- the sleeve 58 can be formed with a C-shaped lateral cross-section, so that it can be readily deformed inward.
- the sleeve 58 can also be deformed radially outward, if desired, so that it no longer grips the outer surface of the connector 44, thereby allowing the connector 44 to be withdrawn from the connector 46, for example, to disassemble the perforating assembly 12 after firing, after a misfire, etc .
- connection 26 is described above as having multiple benefits (e.g., speed of connecting, lack of threading connectors 44, 46 to each other, shock absorbing capability, detonation train 54 connecting, etc.), it is not necessary for all of the above-described benefits to be incorporated into a single connection embodying principles of this disclosure.
- the connection 26 could include one of the above-described benefits, any subset of those benefits, and/or other benefits.
- connections 26 are used to prevent or mitigate shock being transmitted to various well tools 64a-c interconnected in a well tool assembly 66 positioned in the wellbore 14.
- the well tool 64a comprises an
- the well tool 64b comprises a fluid sampler (e.g., with chambers therein for containing selectively filled fluid samples), and the well tool 64c comprises an electronics module (e.g., used for receiving, storing and/or transmitting data, commands, etc., measuring parameters, etc.).
- a fluid sampler e.g., with chambers therein for containing selectively filled fluid samples
- an electronics module e.g., used for receiving, storing and/or transmitting data, commands, etc., measuring parameters, etc.
- any type of well tool may be used in the assembly 66 in keeping with those principles. It is not necessary for the assembly 66 to include multiple well tools. Instead, a single well tool may benefit from use of the connections 26.
- connections 26 may be used on only one end of a well tool, or in positions other than the ends of a well tool.
- connections 26 prevent or mitigate shock being transmitted to the well tools 64a-c interconnected in the assembly 66, and also allow the well tools to be interconnected in the assembly quickly and without threading.
- the firing head 20, perforating guns 22 and packer 24 described above are also examples of well tools which can benefit from use of the connection 26.
- connection 26 depicted in FIGS. 1 & 3-6 allows for shock loads to be absorbed or at least mitigated between
- a method described above can include interconnecting a well tool 64a-c in a well tool assembly 66 with a shock mitigating connection 26, the interconnecting being
- the connection 26 may comprise at least one shock absorber 50, 52 positioned between connectors 44, 46.
- the connection 26 may comprise a sleeve 58 having relatively coarse pitch profiles 60 on one side, and the sleeve 58 having relatively fine pitch profiles 62 on an opposite side .
- Interconnecting can include pushing one connector 44 into another connector 46 without threading the connectors 44, 46 together, thereby preventing disconnection of the connectors 44, 46.
- An engagement device 48 may permit relative displacement between the connectors 44, 46 in one longitudinal direction, but prevent relative displacement between the connectors 44, 46 in an opposite longitudinal direction.
- the well tool may be one or more of a perforating gun 22, a firing head 20, a packer 24, an instrument carrier 64a, a fluid sampler 64b and an electronics module 64c.
- a well perforating assembly 12 described above can include at least two perforating devices (such as firing head 20, perforating gun 22, etc.), a detonation train 54 extending through the perforating devices 20, 22, and a shock absorber 50, 52 positioned between the perforating devices 20, 22.
- perforating devices such as firing head 20, perforating gun 22, etc.
- detonation train 54 extending through the perforating devices 20, 22, and a shock absorber 50, 52 positioned between the perforating devices 20, 22.
- the shock absorber 50, 52 preferably absorbs
- the detonation train 54 may extend longitudinally through the shock absorber 50, 52.
- the perforating devices may comprise perforating guns
- the perforating devices may comprise a perforating gun 22 and a firing head 20.
- the assembly 12 can include a connection 26 between the perforating devices 20, 22.
- An engagement device 48 of the connection 26 may permit longitudinal compression of the connection 26, but prevent elongation of the connection 26.
- the connection 26 can comprise connectors 44, 46 attached to the respective perforating devices.
- engagement device 48 may permit relative displacement between the connectors 44, 46 in one longitudinal direction, but prevent relative displacement between the connectors 44, 46 in an opposite longitudinal direction.
- the connectors 44, 46 are preferably connected to each other without threading together the connectors 44, 46.
- the detonation train 54 may extend through the connectors 44, 46.
- the method can include, prior to installing the perforating assembly 12 in a wellbore 14, pushing one perforating device connector 44 into another perforating device connector 46 without threading the connectors 44, 46 together, thereby: a) preventing
- the method can also include positioning a shock
- the shock absorber 50, 52 may absorb longitudinally directed shock generated by firing at least one perforating device 20, 22.
- the detonation train 54 may extend longitudinally through the shock absorber 50, 52.
- Each, or at least one, of the perforating device connectors 44, 46 may be attached to a perforating gun 22. At least one of the perforating device connectors 44, 46 may be attached to a firing head 20.
- the above disclosure also provides to the art a well system 10.
- the well system 10 can comprise a perforating assembly 12 including multiple perforating guns 22 and multiple shock absorbers 50, 52.
- Each shock absorber 50, 52 may be interconnected between at least two of the perforating guns 22.
- Each shock absorber 50, 52 preferably mitigates transmission of shock from one connector 44 to another 46, the connectors being longitudinally compressible but prevented from elongating.
- a detonation train 54 may extend through the shock absorbers 50, 52.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011363051A AU2011363051B2 (en) | 2011-03-22 | 2011-03-22 | Well tool assemblies with quick connectors and shock mitigating capabilities |
EP11861857.8A EP2689102A4 (en) | 2011-03-22 | 2011-03-22 | Well tool assemblies with quick connectors and shock mitigating capabilities |
BR112013021655A BR112013021655A2 (en) | 2011-03-22 | 2011-03-22 | Method to assemble a drilling rig and well system |
PCT/US2011/029412 WO2012128759A1 (en) | 2011-03-22 | 2011-03-22 | Well tool assemblies with quick connectors and shock mitigating capabilities |
US13/413,588 US20120241169A1 (en) | 2011-03-22 | 2012-03-06 | Well tool assemblies with quick connectors and shock mitigating capabilities |
US13/430,550 US9206675B2 (en) | 2011-03-22 | 2012-03-26 | Well tool assemblies with quick connectors and shock mitigating capabilities |
US13/848,632 US8875796B2 (en) | 2011-03-22 | 2013-03-21 | Well tool assemblies with quick connectors and shock mitigating capabilities |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2011/029412 WO2012128759A1 (en) | 2011-03-22 | 2011-03-22 | Well tool assemblies with quick connectors and shock mitigating capabilities |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012128759A1 true WO2012128759A1 (en) | 2012-09-27 |
Family
ID=46879647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/029412 WO2012128759A1 (en) | 2011-03-22 | 2011-03-22 | Well tool assemblies with quick connectors and shock mitigating capabilities |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2689102A4 (en) |
AU (1) | AU2011363051B2 (en) |
BR (1) | BR112013021655A2 (en) |
WO (1) | WO2012128759A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107035346A (en) * | 2016-02-04 | 2017-08-11 | 中石化石油工程技术服务有限公司 | One kind is used for cable transfer perforation damper |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3923107A (en) | 1974-12-14 | 1975-12-02 | Schlumberger Technology Corp | Well bore perforating apparatus |
US5131470A (en) | 1990-11-27 | 1992-07-21 | Schulumberger Technology Corporation | Shock energy absorber including collapsible energy absorbing element and break up of tensile connection |
US20030089497A1 (en) * | 2001-11-13 | 2003-05-15 | George Flint R. | Apparatus for absorbing a shock and method for use of same |
US20040140090A1 (en) | 2001-05-03 | 2004-07-22 | Mason Guy Harvey | Shock absorber |
US20100147519A1 (en) * | 2008-12-16 | 2010-06-17 | Schlumberger Technology Corporation | Mitigating perforating gun shock |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3054450A (en) * | 1958-06-02 | 1962-09-18 | Baker Oil Tools Inc | Retrievable packer apparatus |
-
2011
- 2011-03-22 WO PCT/US2011/029412 patent/WO2012128759A1/en active Application Filing
- 2011-03-22 AU AU2011363051A patent/AU2011363051B2/en not_active Ceased
- 2011-03-22 BR BR112013021655A patent/BR112013021655A2/en not_active IP Right Cessation
- 2011-03-22 EP EP11861857.8A patent/EP2689102A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3923107A (en) | 1974-12-14 | 1975-12-02 | Schlumberger Technology Corp | Well bore perforating apparatus |
US5131470A (en) | 1990-11-27 | 1992-07-21 | Schulumberger Technology Corporation | Shock energy absorber including collapsible energy absorbing element and break up of tensile connection |
US20040140090A1 (en) | 2001-05-03 | 2004-07-22 | Mason Guy Harvey | Shock absorber |
US20030089497A1 (en) * | 2001-11-13 | 2003-05-15 | George Flint R. | Apparatus for absorbing a shock and method for use of same |
US20100147519A1 (en) * | 2008-12-16 | 2010-06-17 | Schlumberger Technology Corporation | Mitigating perforating gun shock |
Non-Patent Citations (1)
Title |
---|
See also references of EP2689102A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107035346A (en) * | 2016-02-04 | 2017-08-11 | 中石化石油工程技术服务有限公司 | One kind is used for cable transfer perforation damper |
Also Published As
Publication number | Publication date |
---|---|
AU2011363051A1 (en) | 2013-08-15 |
AU2011363051B2 (en) | 2015-09-24 |
BR112013021655A2 (en) | 2016-11-22 |
EP2689102A4 (en) | 2014-10-08 |
EP2689102A1 (en) | 2014-01-29 |
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