US20180355694A1 - Pressure differential plug and method - Google Patents
Pressure differential plug and method Download PDFInfo
- Publication number
- US20180355694A1 US20180355694A1 US15/621,179 US201715621179A US2018355694A1 US 20180355694 A1 US20180355694 A1 US 20180355694A1 US 201715621179 A US201715621179 A US 201715621179A US 2018355694 A1 US2018355694 A1 US 2018355694A1
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- United States
- Prior art keywords
- baffle
- plug
- passageways
- mandrel
- actuation
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- -1 steam Substances 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
Images
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
- E21B33/12—Packers; Plugs
-
- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Definitions
- a pressure differential plug including a mandrel, a baffle within the mandrel, and one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle.
- a borehole system including a borehole, a string in the borehole, the string including a plug as as in any prior embodiment.
- a method for causing an actuation via pressure including flowing fluid through a baffle of a plug as in any prior embodiment, increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.
- FIG. 1 is a longitudinal cross sectional view of a Pressure Differential Plug as described herein;
- FIG. 2 is a side view of FIG. 1 in the direction of arrows 1 - 1 in FIG. 1 ;
- FIG. 3 is a transparent view of an alternate baffle having tortuous passageways
- FIG. 4 is another view of a baffle plate with more passageways than that shown in FIG. 2 ;
- FIG. 5 is an enlarged view of a portion of the baffle of FIG. 4 illustrating sand particles bridging over the passageways.
- a Pressure Differential Plug 10 that allows for a pressure differential to be created sufficient to take desired borehole actions based upon pressure without the loss of the ability to flow fluid through the plug.
- the plug 10 is illustrated with a packer 12 but it is to be understood that the disclosure hereof is directed to the inner portions of the tool such that providing tubing pressure cannot otherwise escape to an annulus 14 , a packer would not be needed.
- the action being taken by application of pressure to the tubing is to treat the formation. In that case, the fluid inside the tubing will necessarily be open to the annulus 14 and hence the packer would be needed.
- the plug 10 includes a tubular mandrel 16 within which a baffle 18 is disposed.
- the baffle may be secured in the mandrel 16 with threads 17 , screws, welding, adhesives, or be formed therein.
- the baffle 18 may also be a part of the mandrel 16 as in having been formed as a part of the mandrel 16 .
- the baffle 18 may be either subtractively machined or additively manufactured as a part of the mandrel 16 .
- the baffle 18 includes a number of passageways 20 therein that range from 1 to any number of passageways that are practically positionable in the area provided by the particular baffle 16 .
- a number of passageways 20 therein that range from 1 to any number of passageways that are practically positionable in the area provided by the particular baffle 16 .
- 12 passageways 20 there are 12 passageways 20 .
- a larger number of passageways may be achieved by using smaller diameters of the passageways. While “diameter” is used for discussion purposes, there is no reason the passageways must necessarily be cylindrical but rather any tubular form may be employed as desired.
- the passageways 20 collectively must restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle.
- the actuation pressure is a formation fracture pressure and in another embodiment the actuation pressure is that pressure associated with the actuation of a downhole tool.
- the passageways collectively must have a valve coefficient of less than 4.47. This can be determined for a particular embodiment by using the equations:
- Maintaining configurations with a valve coefficient of less than 4.47 provides for a condition where applied flow rate and pressure from the surface will reach high enough levels in a target region to achieve the operation desired, for example a fracturing job, all while maintaining a flowing fluid dynamic at the plug site (i.e. no member is seated on the baffle). This allows for tools to be pumped to depth even with the plug 10 in place, if desired. This avoids the difficulties of very early plugs that prevent all fluid flow once set and the difficulties of those traditional plugs that utilize a seat to preserve fluid flow when set but require a ball drop (or similar member) to land on the seat to enable pressure up. And it will be appreciated by those of skill in the art that once the ball is seated, flow through is prevented and hence pumping other or additional tools to the site is not possible without removing the ball.
- plug 10 also includes standard anchoring equipment 22 such as one or more slips 22 or other similar equipment.
- the plug 10 is installed in a tubular form which may be an open hole, a casing, a tubing, etc. and anchored there.
- a flow rate for flowing through the plug 10 may initially be established and then increased to a level where pressure is built against the baffle 18 and fracturing may occur. It will be understood that after setting of the plug 10 , an operator may elect to run a set of guns to open the casing of tubing for access to the formation for a fracturing operation.
- a borehole system that includes a borehole 24 within which a string 26 (casing, tubing, etc.) is positioned and the string including a plug 10 as described above.
- baffle 118 includes passageways 120 that are tortuous over their lengths. Tortuosity may be employed to alter the valve coefficient of a baffle 118 . While the tortuous path illustrated is a squared off path, it is to be understood that any tortuous path is acceptable such as a curved path, helical path, etc. as is desired to create the valve coefficient needed while avoiding some other parameters that might otherwise be employed to secure the desired valve coefficient.
- a baffle 218 is illustrated with many passageways 220 .
- particles 240 such as sand or similar may be used to bridge over the individual passageways 220 further inhibiting fluid flow therethrough.
- ⁇ fluid density (subscripts p and f indicate particle and fluid respectively)
- the particles 240 will be carried along in the fluid flow to the baffle 218 and will bridge across the passageways 220 as seen in FIG. 5 .
- Embodiment 1 A pressure differential plug including a mandrel, a baffle within the mandrel, and one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle.
- Embodiment 2 The plug as in any prior embodiment wherein the one or more passageways collectively present a valve coefficient of less than 4.47.
- Embodiment 3 The plug as in any prior embodiment wherein the plug further includes a packer and anchoring equipment.
- Embodiment 4 The plug as in any prior embodiment wherein the baffle is secured in the mandrel with threads.
- Embodiment 5 The plug as in any prior embodiment wherein the baffle is formed as a part of the mandrel.
- Embodiment 6 The plug as in any prior embodiment wherein the one or more passageways are cylindrical.
- Embodiment 7 The plug as in any prior embodiment wherein the one or more passageways are tortuous.
- Embodiment 8 A borehole system including a borehole, a string in the borehole, the string including a plug as as in any prior embodiment.
- Embodiment 9 A method for causing an actuation via pressure including flowing fluid through a baffle of a plug as in any prior embodiment, increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.
- Embodiment 10 The method as in any prior embodiment further including flowing particles to bridge over the one or more passageways in the baffle.
- Embodiment 11 The method as in any prior embodiment wherein the actuation is fracturing.
- Embodiment 12 The method as in any prior embodiment wherein the actuation is of another tool.
- Embodiment 13 The method as in any prior embodiment further including returning fluid flow to a level below pressure increase and flowing fluid through the baffle.
- Embodiment 14 A method for making a pressure differential plug as in any prior embodiment wherein the baffle is subtractively machined in the mandrel.
- Embodiment 15 The method as in any prior embodiment wherein the baffle is additively manufactured with the mandrel.
- the teachings of the present disclosure may be used in a variety of well operations. These operations may involve using one or more treatment agents to treat a formation, the fluids resident in a formation, a wellbore, and/or equipment in the wellbore, such as production tubing.
- the treatment agents may be in the form of liquids, gases, solids, semi-solids, and mixtures thereof.
- Illustrative treatment agents include, but are not limited to, fracturing fluids, acids, steam, water, brine, anti-corrosion agents, cement, permeability modifiers, drilling muds, emulsifiers, demulsifiers, tracers, flow improvers etc.
- Illustrative well operations include, but are not limited to, hydraulic fracturing, stimulation, tracer injection, cleaning, acidizing, steam injection, water flooding, cementing, etc.
Abstract
A pressure differential plug including a mandrel, a baffle within the mandrel, and one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle. A borehole system including a borehole, a string in the borehole, the string including a plug as as in any prior embodiment. A method for causing an actuation via pressure including flowing fluid through a baffle of a plug as in any prior embodiment, increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.
Description
- In the drilling and completion industry, there is often a need to run and set plugs in an open hole or a cased hole or even in a tubing string for the purpose of allowing an operator to apply pressure from surface. That pressure may be used for things such as setting other tools or treating the formation including fracturing the formation. Using such configurations is a two-step process. The plug (aka seat) is set in the downhole environment and later a ball or similar is dropped to land on the plug or seat thereby presenting a restriction to fluid flow such that pressure may be built against this combination of components. This type of configuration has worked extremely well in the industry for an extended period of time. The industry is however always open to improvements in configurations and methods that enhance efficiency or reduce components and therefore cost.
- A pressure differential plug including a mandrel, a baffle within the mandrel, and one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle.
- A borehole system including a borehole, a string in the borehole, the string including a plug as as in any prior embodiment.
- A method for causing an actuation via pressure including flowing fluid through a baffle of a plug as in any prior embodiment, increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.
- The following descriptions should not be considered limiting in any way. With reference to the accompanying drawings, like elements are numbered alike:
-
FIG. 1 is a longitudinal cross sectional view of a Pressure Differential Plug as described herein; -
FIG. 2 is a side view ofFIG. 1 in the direction of arrows 1-1 inFIG. 1 ; -
FIG. 3 is a transparent view of an alternate baffle having tortuous passageways; -
FIG. 4 is another view of a baffle plate with more passageways than that shown inFIG. 2 ; and -
FIG. 5 is an enlarged view of a portion of the baffle ofFIG. 4 illustrating sand particles bridging over the passageways. - A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.
- Referring to
FIGS. 1 and 2 simultaneously, a PressureDifferential Plug 10 is disclosed that allows for a pressure differential to be created sufficient to take desired borehole actions based upon pressure without the loss of the ability to flow fluid through the plug. Theplug 10 is illustrated with apacker 12 but it is to be understood that the disclosure hereof is directed to the inner portions of the tool such that providing tubing pressure cannot otherwise escape to anannulus 14, a packer would not be needed. In one embodiment, and as illustrated, the action being taken by application of pressure to the tubing is to treat the formation. In that case, the fluid inside the tubing will necessarily be open to theannulus 14 and hence the packer would be needed. Theplug 10 includes a tubular mandrel 16 within which abaffle 18 is disposed. The baffle may be secured in the mandrel 16 withthreads 17, screws, welding, adhesives, or be formed therein. Thebaffle 18 may also be a part of the mandrel 16 as in having been formed as a part of the mandrel 16. For example, thebaffle 18 may be either subtractively machined or additively manufactured as a part of the mandrel 16. - The
baffle 18, most easily identified inFIG. 2 , includes a number ofpassageways 20 therein that range from 1 to any number of passageways that are practically positionable in the area provided by the particular baffle 16. For example, as illustrated there are 12passageways 20. It is to be appreciated that a larger number of passageways may be achieved by using smaller diameters of the passageways. While “diameter” is used for discussion purposes, there is no reason the passageways must necessarily be cylindrical but rather any tubular form may be employed as desired. - Important to the teaching herein is that in all embodiments hereof regardless of the number of passageways, size of passageways or shape of passageways, the
passageways 20 collectively must restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle. In an embodiment the actuation pressure is a formation fracture pressure and in another embodiment the actuation pressure is that pressure associated with the actuation of a downhole tool. In embodiments the passageways collectively must have a valve coefficient of less than 4.47. This can be determined for a particular embodiment by using the equations: -
Q gpm =C v*(ρwater *ΔP/ρ)̂0.5 or rewritten as Q gpm =C v*(ΔP/SG)̂0.5 or rewritten as C v =Q gpm/(ρwater *ΔP/ρ)̂0.5 or rewritten as C v =Q gpm/(ΔP/SG)̂0.5 - Qgpm=Flow Rate (gpm)
- Cv=Valve Coefficient
- ρ=Density (lb/ft3)
- ρwater=Water Density (lb/ft3)=62.4 lb/ft3
- ΔP=Pressure Drop (psi)
- SG=Specific gravity of the fluid
- Maintaining configurations with a valve coefficient of less than 4.47 provides for a condition where applied flow rate and pressure from the surface will reach high enough levels in a target region to achieve the operation desired, for example a fracturing job, all while maintaining a flowing fluid dynamic at the plug site (i.e. no member is seated on the baffle). This allows for tools to be pumped to depth even with the
plug 10 in place, if desired. This avoids the difficulties of very early plugs that prevent all fluid flow once set and the difficulties of those traditional plugs that utilize a seat to preserve fluid flow when set but require a ball drop (or similar member) to land on the seat to enable pressure up. And it will be appreciated by those of skill in the art that once the ball is seated, flow through is prevented and hence pumping other or additional tools to the site is not possible without removing the ball. - As illustrated,
plug 10 also includes standard anchoring equipment 22 such as one or more slips 22 or other similar equipment. - In use, the
plug 10 is installed in a tubular form which may be an open hole, a casing, a tubing, etc. and anchored there. A flow rate for flowing through theplug 10 may initially be established and then increased to a level where pressure is built against thebaffle 18 and fracturing may occur. It will be understood that after setting of theplug 10, an operator may elect to run a set of guns to open the casing of tubing for access to the formation for a fracturing operation. - Further disclosed herein is a borehole system that includes a
borehole 24 within which a string 26 (casing, tubing, etc.) is positioned and the string including aplug 10 as described above. - In an alternate embodiment, referring to
FIG. 3 ,baffle 118 includespassageways 120 that are tortuous over their lengths. Tortuosity may be employed to alter the valve coefficient of abaffle 118. While the tortuous path illustrated is a squared off path, it is to be understood that any tortuous path is acceptable such as a curved path, helical path, etc. as is desired to create the valve coefficient needed while avoiding some other parameters that might otherwise be employed to secure the desired valve coefficient. - In yet another embodiment, referring to
FIGS. 4 and 5 , a baffle 218 is illustrated withmany passageways 220. In combination with the valve coefficient as described above, it is also contemplated for this embodiment thatparticles 240 such as sand or similar may be used to bridge over theindividual passageways 220 further inhibiting fluid flow therethrough. - Providing the velocity of fluid flow is sufficient to carry sand particles, which is dictated by Stokes law, to wit:
-
w=2*(ρp'1ρf)*g*r 2/(9*μ) - w=Particle settling velocity
- ρ=fluid density (subscripts p and f indicate particle and fluid respectively)
- g=the acceleration due to gravity
- r=the radius of the particle and
- μ=the dynamic viscosity of the fluid,
- then the
particles 240 will be carried along in the fluid flow to the baffle 218 and will bridge across thepassageways 220 as seen inFIG. 5 . - Set forth below are some embodiments of the foregoing disclosure:
- Embodiment 1: A pressure differential plug including a mandrel, a baffle within the mandrel, and one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle.
- Embodiment 2: The plug as in any prior embodiment wherein the one or more passageways collectively present a valve coefficient of less than 4.47.
- Embodiment 3: The plug as in any prior embodiment wherein the plug further includes a packer and anchoring equipment.
- Embodiment 4: The plug as in any prior embodiment wherein the baffle is secured in the mandrel with threads.
- Embodiment 5: The plug as in any prior embodiment wherein the baffle is formed as a part of the mandrel.
- Embodiment 6: The plug as in any prior embodiment wherein the one or more passageways are cylindrical.
- Embodiment 7: The plug as in any prior embodiment wherein the one or more passageways are tortuous.
- Embodiment 8: A borehole system including a borehole, a string in the borehole, the string including a plug as as in any prior embodiment.
- Embodiment 9: A method for causing an actuation via pressure including flowing fluid through a baffle of a plug as in any prior embodiment, increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.
- Embodiment 10: The method as in any prior embodiment further including flowing particles to bridge over the one or more passageways in the baffle.
- Embodiment 11: The method as in any prior embodiment wherein the actuation is fracturing.
- Embodiment 12: The method as in any prior embodiment wherein the actuation is of another tool.
- Embodiment 13: The method as in any prior embodiment further including returning fluid flow to a level below pressure increase and flowing fluid through the baffle.
- Embodiment 14: A method for making a pressure differential plug as in any prior embodiment wherein the baffle is subtractively machined in the mandrel.
- Embodiment 15: The method as in any prior embodiment wherein the baffle is additively manufactured with the mandrel.
- The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. Further, it should further be noted that the terms “first,” “second,” and the like herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The modifier “about” used in connection with a quantity is inclusive of the stated value and has the meaning dictated by the context (e.g., it includes the degree of error associated with measurement of the particular quantity).
- The teachings of the present disclosure may be used in a variety of well operations. These operations may involve using one or more treatment agents to treat a formation, the fluids resident in a formation, a wellbore, and/or equipment in the wellbore, such as production tubing. The treatment agents may be in the form of liquids, gases, solids, semi-solids, and mixtures thereof. Illustrative treatment agents include, but are not limited to, fracturing fluids, acids, steam, water, brine, anti-corrosion agents, cement, permeability modifiers, drilling muds, emulsifiers, demulsifiers, tracers, flow improvers etc. Illustrative well operations include, but are not limited to, hydraulic fracturing, stimulation, tracer injection, cleaning, acidizing, steam injection, water flooding, cementing, etc.
- While the invention has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims. Also, in the drawings and the description, there have been disclosed exemplary embodiments of the invention and, although specific terms may have been employed, they are unless otherwise stated used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention therefore not being so limited.
Claims (15)
1. A pressure differential plug comprising:
a mandrel;
a baffle within the mandrel; and
one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle.
2. The plug as claimed in claim 1 wherein the one or more passageways collectively present a valve coefficient of less than 4.47.
3. The plug as claimed in claim 1 wherein the plug further includes a packer and anchoring equipment.
4. The plug as claimed in claim 1 wherein the baffle is secured in the mandrel with threads.
5. The plug as claimed in claim 1 wherein the baffle is formed as a part of the mandrel.
6. The plug as claimed in claim 1 wherein the one or more passageways are cylindrical.
7. The plug as claimed in claim 1 wherein the one or more passageways are tortuous.
8. A borehole system comprising:
a borehole;
a string in the borehole, the string including a plug as claimed in claim 1 .
9. A method for causing an actuation via pressure comprising:
flowing fluid through a baffle of a plug as claimed in claim 1 ;
increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.
10. The method as claimed in claim 9 further including flowing particles to bridge over the one or more passageways in the baffle.
11. The method as claimed in claim 9 wherein the actuation is fracturing.
12. The method as claimed in claim 9 wherein the actuation is of another tool.
13. The method as claimed in claim 9 further including returning fluid flow to a level below pressure increase and flowing fluid through the baffle.
14. A method for making a pressure differential plug as claimed in claim 1 wherein the baffle is subtractively machined in the mandrel.
15. The method as claimed in claim 14 wherein the baffle is additively manufactured with the mandrel.
Priority Applications (1)
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US15/621,179 US20180355694A1 (en) | 2017-06-13 | 2017-06-13 | Pressure differential plug and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US15/621,179 US20180355694A1 (en) | 2017-06-13 | 2017-06-13 | Pressure differential plug and method |
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US20180355694A1 true US20180355694A1 (en) | 2018-12-13 |
Family
ID=64562163
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US15/621,179 Abandoned US20180355694A1 (en) | 2017-06-13 | 2017-06-13 | Pressure differential plug and method |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106525A (en) * | 1976-02-20 | 1978-08-15 | The Secretary Of State For Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Fluid pressure control |
US6695057B2 (en) * | 2001-05-15 | 2004-02-24 | Weatherford/Lamb, Inc. | Fracturing port collar for wellbore pack-off system, and method for using same |
US7090020B2 (en) * | 2002-10-30 | 2006-08-15 | Schlumberger Technology Corp. | Multi-cycle dump valve |
US9016364B2 (en) * | 2010-11-23 | 2015-04-28 | Wireline Solutions, Llc | Convertible multi-function downhole isolation tool and related methods |
US9624748B2 (en) * | 2014-01-24 | 2017-04-18 | Cameron International Corporation | Low shear trim |
US10119363B2 (en) * | 2016-11-04 | 2018-11-06 | Comitt Well Solutions LLC | Methods and systems for a pressure controlled piston sleeve |
US10167698B2 (en) * | 2016-04-27 | 2019-01-01 | Geodynamics, Inc. | Configurable bridge plug apparatus and method |
-
2017
- 2017-06-13 US US15/621,179 patent/US20180355694A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106525A (en) * | 1976-02-20 | 1978-08-15 | The Secretary Of State For Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Fluid pressure control |
US6695057B2 (en) * | 2001-05-15 | 2004-02-24 | Weatherford/Lamb, Inc. | Fracturing port collar for wellbore pack-off system, and method for using same |
US7090020B2 (en) * | 2002-10-30 | 2006-08-15 | Schlumberger Technology Corp. | Multi-cycle dump valve |
US9016364B2 (en) * | 2010-11-23 | 2015-04-28 | Wireline Solutions, Llc | Convertible multi-function downhole isolation tool and related methods |
US9624748B2 (en) * | 2014-01-24 | 2017-04-18 | Cameron International Corporation | Low shear trim |
US10167698B2 (en) * | 2016-04-27 | 2019-01-01 | Geodynamics, Inc. | Configurable bridge plug apparatus and method |
US10119363B2 (en) * | 2016-11-04 | 2018-11-06 | Comitt Well Solutions LLC | Methods and systems for a pressure controlled piston sleeve |
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