US20160305216A1 - Fluidic adjustable choke - Google Patents
Fluidic adjustable choke Download PDFInfo
- Publication number
- US20160305216A1 US20160305216A1 US15/102,113 US201315102113A US2016305216A1 US 20160305216 A1 US20160305216 A1 US 20160305216A1 US 201315102113 A US201315102113 A US 201315102113A US 2016305216 A1 US2016305216 A1 US 2016305216A1
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- inlet
- well choke
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Classifications
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- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
- E21B34/025—Chokes or valves in wellheads and sub-sea wellheads for variably regulating fluid flow
-
- 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
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
Abstract
A surface well choke system has a flow chamber and a fluid switch. The flow chamber has a first flow chamber inlet with more resistance to flow to an outlet than a second flow chamber inlet has to flow to the outlet. The fluid switch has a first flow path from a fluid switch inlet to the first flow chamber inlet, a second flow path from the fluid switch inlet to the second flow chamber inlet, and a movable flow deflector upstream of the first and second flow paths. The movable flow deflector is actuable to deflect flow from the fluid switch inlet to the first flow path or the second flow path.
Description
- This application is a U.S. National Phase Application under 35 U.S.C. §371 and claims the benefit of priority to International Application Serial No. PCT/US2013/078288, filed on Dec. 30, 2013, the contents of which are hereby incorporated by reference.
- The present disclosure relates to surface well choke systems and methods for controlling the flow of fluid to and from a well.
- Surface well choke systems used on production wells typically restrict fluid flow from an inlet to an outlet by a manually adjustable hand wheel or power actuator that moves a tapered stem into and out of a choke seat. These types of choke mechanisms are imprecise and slow to respond to change the fluid restriction. Additionally, the interface between the tapered stem and seat is subject to debris contamination and erosion over time.
-
FIG. 1 is a schematic partial cross-sectional view of an example well system with a surface well choke system. -
FIGS. 2A and 2B are a schematic cross-sectional front view (FIG. 2A ) and a side view (FIG. 2B ) of an example well choke that can be used in the surface well choke system ofFIG. 1 . -
FIG. 3 is a schematic cross-sectional view of an example well choke system incorporating an example bypass. -
FIG. 4 is a schematic cross-sectional view of an example well choke system incorporating parallel well chokes. - Like reference symbols in the various drawings indicate like elements.
- Referring first to
FIG. 1 , anexample well system 10 includes a substantiallycylindrical wellbore 12 that extends from awellhead 14 at thesurface 16 downward into the Earth into one or more subterranean zones of interest 18 (one shown). In certain instances, the formations of the subterranean zone are hydrocarbon bearing, such as oil and/or gas deposits, and thewell system 10 will be used in producing the hydrocarbons and/or used in aiding production of the hydrocarbons from another well (e.g., as an injection or observation well). Notably, theexample well system 10 is described herein for convenience of reference only, and the concepts herein are applicable to virtually any type of well. Thewellhead 14 has aflange 22 for attaching equipment to thewellhead 14. A wellchoke system 24 is shown attached to thewellhead 14, for example, by a correspondingwellhead attachment flange 23 of thechoke system 24 being bolted and/or otherwise affixed to theflange 22. Thewell choke system 24 is further shown coupled topipeline 26, for example, a production or injection pipe. Fluids travel between thewellbore 12 and the pipeline, through thewellhead 14 and wellchoke system 24. - Referring to
FIGS. 2A and 2B , an example wellchoke 100 that can be used in awell choke system 24 is shown in a detail cross-sectional front view and a side view, respectively, to show the working aspects of the choke. The well choke 100 controls the flow of fluid from its inlet to its outlet, or in the context of thewell system 10 ofFIG. 1 , the flow between thewellhead 14 andpipeline 26. In certain instances, thewell choke 100 is full bore, where the smallest flow area through thechoke 100, including an inlet and outlet of thechoke 100, is the same (precisely or substantially) or larger than the flow area through thewellhead 14. In certain instances, the smallest diameters through the inlet and the outlet of thechoke 100 are the same as or larger than the bore diameter of thewellhead 14. In other instances, thewell choke 100 can have other, different flow areas or inner diameters. - The
well choke 100 has amain body 101 that internally defines afluid switch 102 and a variable flowresistance flow chamber 104. The inlet to thefluid switch 102 functions as an inlet of thewell choke 100. Thefluid switch 102, as discussed in more detail below, determines the path of the fluid flow through thewell choke 100. The outlet fromflow chamber 104 functions as an outlet of thewell choke 100 and houses pathways of high and low flow rate reduction. - The
flow chamber 104 has an indirectflow chamber inlet 106 and a directflow chamber inlet 108, where the indirectflow chamber inlet 106 presents a flow path with more resistance to flow to anexit outlet 110 than the directflow chamber inlet 108. Theexit outlet 110 supplies fluid to the outlet of the well choke 100. Theflow chamber 104 has asidewall 105 apart from theexit outlet 110 and that defines theflow chamber inlets FIGS. 2A and 2B show a generally disk shaped chamber, where thesidewall 105 is curved to form a circular shape and the chamber has a low height to diameter aspect ratio. Theexit outlet 110 is shown as circular opening in an end wall, near the center of theflow chamber 104, and in certain instances, with a center on the center axis of theflow chamber 104. In other instances, the shape of the chamber, shape of the sidewalls, exit location, exit orientation and/or exit shape could be different. For example, the chamber need not be disk shaped, but rather could be rectangular, spherical, and/or other shape. - The indirect
flow chamber inlet 106 opens anindirect flow path 114 to theflow chamber 104 and directs incoming flow in a trajectory that is not directly toward theexit outlet 110. This indirect trajectory provides a higher reduction in flow rate towards theexit outlet 110 than a more direct trajectory would, because instead of flowing directly toward theoutlet 110, the flow tends to circle theoutlet 110 in sequentially smaller circles until it reaches theoutlet 110. In instances having acurved sidewall 105, the curvature of thesidewall 105 facilitates this circling by redirecting impinging and nearby flow to circle around theoutlet 110. In certain instances, theinlet 106 directs flow in a trajectory parallel to the tangent of thecurved sidewall 105. The indirect flow chamber inlet 106 results in restriction in net fluid flow rate while substantially maintaining flow velocity from the indirectflow chamber inlet 106 to theexit outlet 110, because the restriction is produced by the longer flow path and not a reduction in flow area. This rapidly reduces fluid flow rate while maintaining a large pressure drop. - The direct
flow chamber inlet 108 opens adirect flow path 116 to theflow chamber 104 and directs incoming flow more directly to theexit outlet 110 than theindirect flow inlet 106. In certain instances, the direct flow chamber inlet directs incoming flow directly to theoutlet 110, for example, radially in an embodiment having acircular exit outlet 110. This more direct flow provides lower reduction in fluid flow rate towards theexit outlet 110 than the fluid flow from theindirect inlet 106, because the flow tends to flow in a substantially straight and direct path from the directflow chamber inlet 108 to theexit outlet 110. In certain instances, the directflow chamber inlet 108 additionally has an island along the centerline of the directflow chamber inlet 108 that straightens fluid flow as it passes through the directflow chamber inlet 108 toward theexit outlet 110. - The
fluid switch 102 controls the path, and thus the resistance to flow rate, of the fluid flow through thewell choke 100. Thefluid switch 102 has afluid switch inlet 112, theindirect flow path 114 directed towards the indirectflow chamber inlet 106, thedirect flow path 116 directed towards the directflow chamber inlet 108, and amovable flow deflector 118. - The
fluid switch 102 is upstream relative to theflow chamber 104. Thefluid switch inlet 112 receives flow from the inlet to thechoke 100. In certain instances, thefluid switch inlet 112 has the same flow area (e.g., same diameter) as theexit outlet 110 of theflow chamber 104. In other instances, the flow area of theexit outlet 110 andfluid switch inlet 112 can be different. In certain instances, thedirect flow path 116 is linear (substantially or precisely) from thefluid switch inlet 112 to the directflow chamber inlet 108, tracking along a sidewall of thefluid switch 102. Thefluid switch 102 also has an angled offset pathway that defines theindirect flow path 114. As shown, theindirect flow path 114 tracks a curved sidewall leading to the indirectflow chamber inlet 106, but could be shaped differently. - The
movable flow deflector 118 is located upstream of theindirect flow path 114 anddirect flow path 116. Thedeflector 118 is moved in the flow by anactuator 119. Theflow deflector 118 is shown residing opposite theindirect flow path 114. Thus, movement of theflow deflector 118 into the flow, toward theindirect flow path 114 deflects the fluid flow down theindirect flow path 114, or movement of thedeflector 118 out of the flow, away from theindirect flow path 114, allows the fluid to flow down thedirect flow path 116. Thefluid deflector 118 need not fully close off thedirect flow path 116 to direct flow down theindirect flow path 114, but rather creates a perturbation to the flow that tends to deflect the flow to theindirect flow path 114. Displacing thedeflector 118 from flush with the wall of theinlet 112 to 20%-30% of the transverse dimension of the flow area (e.g., diameter) is enough to deflect the fluid flow to flow (substantially or wholly) along theindirect flow path 114. In other applications, depending on flow rate and shape of the deflection, displacing thedeflection 118 from flush with the wall of the inlet to 10% of the transverse dimension of the flow area is enough to deflect the flow while in other applications, displacements in excess of 50% are needed. No displacement of themovable flow deflector 118 into the inlet flow path of thefluid switch 102 allows the fluid to flow along thedirect flow path 116. Notably, themoveable flow deflector 118 need not be moved to its full extent into the flow. For example, theflow deflector 118 can be continuously adjustable between a retracted position (e.g., flush with the wall of theinlet 112 or other) and its full extent. Each intermediate position provides a different degree of perturbation to the flow, and thus, deflects different amounts of flow along thedirect flow path 116 and theindirect flow path 114. Also, although only oneflow deflector 118 is shown inFIGS. 2A and 2B , in other instances, more than one could be provided. In certain instances,multiple flow deflectors 118 are provided on the same side of the flow, on opposite sides of the flow or otherwise arranged. - The
actuator 119 of themovable flow deflector 118 can take many forms. In certain instances, theactuator 119 is a solenoid, locking solenoid, piezoceramic, voice coil, motor, magnetostrictor, ferroelectric, relaxor ferroelectric, pump, bellow, blower, a combination thereof, and/or others. - Referring to
FIG. 3 , another configuration ofwell choke 100′ that can be used in awell choke system 24 is shown in front cross-sectional view. Thewell choke 100′ is like thechoke 100 ofFIGS. 2A and 2B , including afluid switch 102,moveable flow deflector 118,indirect flow path 114,direct flow path 116, variable flowresistance flow chamber 104, andexit outlet 110. Thewell choke 100′ additionally has a parallelbypass flow path 200 that allows a portion of the flow through thechoke 100′ to bypass (and thus not flow through) thefluid switch 102 and flowchamber 104. Thebypass 200 lessens the effect of theflow chamber 104 in changing the total flow through thechoke 100′. - Referring to
FIG. 4 , another configuration ofwell choke 100″ that can be used in awell choke system 24 is shown in front cross-sectional view. Thewell choke 100″ has two parallel paths, each with itsown fluid switch 102,moveable flow deflector 118,indirect flow path 114,direct flow path 116, variable flowresistance flow chamber 104, andexit outlet 110. In other instances, additional parallel paths, with or without a switch, deflector and chamber, can be provided. Themoveable flow deflectors 118 can be actuated independently, allowing none, one or both of theflow chambers 104 to provide resistance at a given time. Therefore, instead of providing binary changes in flow resistance, the two parallel paths can provide at least three different degrees of flow resistance. Additional parallel paths can enable providing additional degrees of flow resistance. Arrangements likeFIG. 4 can also include a bypass path, likebypass path 200. - Referring back to
FIG. 1 , in certain instances, thewell choke system 24 has acontroller 120 communicably coupled to the actuator or actuators (e.g., actuator 119) of the choke (e.g., choke 100, 100′ or 100″) to control flow through the choke. Thecontroller 120 can respond to a user input and/or an input from another controller, computer or other. Thecontroller 120 can operate the actuator to a steady state position and/or operate the actuator at a specified duty cycle. Because the flow deflector need not move across the entire flow area and need not be configured to seal the entire flow area, it can be lightweight and moved quickly. In certain instances, the flow deflector can be moved at a duty cycle of between 0.001 Hertz and 1 Hertz, and in certain instances, up to 100 Hertz or higher. Thecontroller 120 and the actuator of the flow deflector can be coupled by wire (electrical, optical and/or other) or wireless connection. - In certain instances, the
well choke system 24 includes or accesses one ormore sensors 122 to sense a characteristic of fluid that flows through the well choke and/or other characteristics apart from the fluid that flows through the well choke. The one ormore sensors 122 measure pressure, velocity, mass flow rate, volumetric flow rate, viscosity, and/or other characteristics. For example, in certain instances, asensor 122 is in the flow path upstream or downstream of the flow deflector, in the choke, in the wellbore (as shown) or elsewhere. The one ormore sensors 122 are communicably coupled to thecontroller 120, allowing thecontroller 120 to operate the choke based on the output of the one ormore sensors 122. Thesensor 122 and thecontroller 120 can be coupled by wire or wireless connection. In certain instances, thecontroller 120 can operate in a closed loop feedback loop based on the output of the one ormore sensors 122. - Certain aspects encompass, a surface well choke system includes a flow chamber and a fluid switch. The flow chamber includes a first flow chamber inlet that has more resistance to flow to an outlet than a second flow chamber inlet has to flow to the outlet. The fluid switch includes a first flow path from a fluid switch inlet to the first flow chamber inlet, a second flow path from the fluid switch inlet to the second flow chamber inlet, and a movable flow deflector upstream of the first and second flow paths that is actuable to deflect flow from the fluid switch inlet to the first flow path or the second flow path.
- Certain aspects encompass, a fluid flow is directed from a wellhead through a first flow path of a surface well choke to an outlet of the surface well choke with a first flow resistance. A fluid deflector moves into the fluid flow and directs the fluid flow through a second, different flow path of the surface well choke to the outlet with a second, different flow resistance.
- Certain aspects encompass, a surface well choke system includes a flow chamber and a fluid switch. The flow chamber includes a first flow chamber inlet that has more resistance to flow to an outlet than a second flow chamber inlet has to flow to the outlet. The fluid switch includes a first flow path from a fluid switch inlet to the first flow chamber inlet, a second flow path from the fluid switch inlet to the second flow chamber inlet, and a movable flow deflector upstream of the first and second flow paths that is actuable to deflect flow from the fluid switch inlet to the first flow path or the second flow path. A controller communicably coupled to an actuator of the movable flow deflector operates the actuator upon user input.
- Implementations can include some, none, or all of the following features. The surface well choke system includes a controller communicably coupled to an actuator of the moveable flow deflector. The controller operates the actuator in encoding information as pressure pulses into fluid flowing through the surface well choke system. The controller operates the actuator at a specified duty cycle. The duty cycle includes rates of 0.001 to 1 Hertz. The movable flow deflector resides in an inlet flow path of the fluid switch, and the actuator stroke is 30% or less of the diameter of the inlet flow path. The surface well choke system includes a sensor to sense a characteristic of fluid that flows through the surface well choke system. The fluid switch includes a wellhead attachment flange. The first flow chamber inlet is an indirect flow inlet and the second flow chamber inlet is a direct flow inlet that is oriented to direct incoming flow more directly to the outlet than the indirect flow inlet. The flow chamber includes a curved sidewall apart from the outlet, where the indirect flow inlet is oriented to direct incoming flow substantially parallel to a tangent of the curved sidewall and the direct inlet is oriented to direct incoming flow at the outlet. The surface well choke system includes a bypass flow path to bypass flow around the flow chamber and the fluid switch, including an inlet about the inlet to the fluid switch and an outlet about the outlet of the flow chamber. The surface well choke system includes a second flow chamber and a second fluid switch in fluidic parallel to the first mentioned flow chamber and first mentioned fluid switch. Directing a fluid flow includes moving the fluid deflector in the fluid flow to an initial position and directing the fluid flow through the first flow path. The fluid deflector is cycled between an initial position and another position at a rate of 0.001 to 1 Hertz. Directing the fluid flow through the second flow path includes directing the fluid flow through an indirect path to the outlet and directing the fluid flow through the first flow path includes directing the fluid flow through a more direct path to the outlet. A portion of the fluid flow is directed through a bypass while another portion of the fluid flow is concurrently directed through the first flow path or the second flow path. The surface well choke system includes at least one sensor communicably coupled to the controller to sense a characteristic of fluid that flows through the well choke system. The surface well choke system includes a first sensor upstream of the flow chamber to sense a first characteristic of fluid, and a second sensor downstream of the flow chamber to sense a second characteristic of fluid.
- A number of embodiments have been described. Nevertheless, it will be understood that various modifications may be. Accordingly, other embodiments are within the scope of the following claims.
Claims (19)
1. A surface well choke system, comprising:
a flow chamber comprising a first flow chamber inlet that has more resistance to flow to an outlet than a second flow chamber inlet has to flow to the outlet; and
a fluid switch comprising:
a first flow path from a fluid switch inlet to the first flow chamber inlet; and
a second flow path from the fluid switch inlet to the second flow chamber inlet;
a movable flow deflector actuable to deflect flow from the fluid switch inlet to the first flow path or the second flow path.
2. The surface well choke system of claim 1 , where the movable flow deflector is between a retracted position and an extended position and continuously adjustable therebetween.
3. The surface well choke system of claim 1 , comprising a controller communicably coupled to an actuator of the movable flow deflector, the controller to operate the actuator at a specified duty cycle.
4. The surface well choke system of claim 3 , where the controller is to operate the actuator at a specified duty cycle of 0.001 to 1 Hertz.
5. The surface well choke system of claim 3 , where the movable flow deflector resides in an inlet flow path of the fluid switch, and the actuator stroke is 30% or less of the diameter of the inlet flow path.
6. The surface well choke system of claim 1 , comprising:
a sensor to sense a characteristic of fluid that flows through the surface well choke system; and
a controller communicably coupled to an actuator of the moveable flow deflector, the controller to operate the actuator.
7. The surface well choke system of claim 1 , where the fluid switch comprises a wellhead attachment flange.
8. The surface well choke system of claim 1 , where the first inlet comprises an indirect flow inlet and the second inlet comprises a direct flow inlet that is oriented to direct incoming flow more directly to the outlet than the indirect flow inlet.
9. The surface well choke system of claim 8 , where the flow chamber comprises a curved sidewall apart from the outlet; and
where the indirect inlet is oriented to direct incoming flow substantially parallel to a tangent of the curved sidewall and the direct inlet is oriented to direct incoming flow at the outlet.
10. The surface well choke system of claim 1 , comprising a bypass flow path to bypass flow around the flow chamber and the fluid switch, comprising an inlet about the inlet to the fluid switch and an outlet about the outlet of the flow chamber.
11. The surface well choke system of claim 1 , comprising a second flow chamber and a second fluid switch in fluidic parallel to the first mentioned flow chamber and first mentioned fluid switch.
12. A method, comprising:
directing a fluid flow from a wellhead through a first flow path of a surface well choke to an outlet of the surface well choke with a first flow resistance;
moving a fluid deflector in the fluid flow; and
directing the fluid flow, with the fluid deflector, through a second, different flow path of the surface well choke to the outlet with a second, different flow resistance.
13. The method of claim 12 , comprising moving the fluid deflector in the fluid flow to an initial position and directing the fluid flow through the first flow path.
14. The method of claim 13 , comprising cycling the fluid deflector between the initial position and another position at a rate of 0.001 to 1 Hertz.
15. The method of claim 12 , where directing the fluid flow through the second flow path comprises directing the fluid flow through an indirect path to the outlet and directing the fluid flow through the first flow path comprises directing the fluid flow through a more direct path to the outlet.
16. The method of claim 12 , comprising directing a portion of the fluid flow through a bypass concurrently while directing another portion of the fluid flow through the first flow path and the second flow path.
17. A surface well choke system, comprising:
a flow chamber comprising a first flow chamber inlet that has more resistance to flow to an outlet than a second flow chamber inlet has to flow to the outlet;
a fluid switch comprising:
a first flow path from a fluid switch inlet to the first flow chamber inlet;
a second flow path from the fluid switch inlet to the second flow chamber inlet; and
a movable flow deflector actuable to deflect flow from the fluid switch inlet to the first flow path or the second flow path; and
a controller communicably coupled to an actuator of the movable flow deflector, the controller to operate the actuator upon user input.
18. The surface well choke system of claim 17 , comprising at least one sensor communicably coupled to the controller to sense a characteristic of fluid that flows through the well choke system.
19. The surface well choke system of claim 18 , comprising:
a first sensor upstream of the flow chamber to sense a first characteristic of fluid; and
a second sensor downstream of the flow chamber to sense a second characteristic of fluid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/US2013/078288 WO2015102575A1 (en) | 2013-12-30 | 2013-12-30 | Fluidic adjustable choke |
Publications (1)
Publication Number | Publication Date |
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US20160305216A1 true US20160305216A1 (en) | 2016-10-20 |
Family
ID=53493783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/102,113 Abandoned US20160305216A1 (en) | 2013-12-30 | 2013-12-30 | Fluidic adjustable choke |
Country Status (2)
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US (1) | US20160305216A1 (en) |
WO (1) | WO2015102575A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190055814A1 (en) * | 2016-11-18 | 2019-02-21 | Halliburton Energy Services, Inc. | Variable Flow Resistance System for Use with a Subterranean Well |
WO2019089947A1 (en) * | 2017-11-01 | 2019-05-09 | Ensco International Incorporated | Automatic well control |
US11105183B2 (en) | 2016-11-18 | 2021-08-31 | Halliburton Energy Services, Inc. | Variable flow resistance system for use with a subterranean well |
US11131161B2 (en) * | 2018-08-23 | 2021-09-28 | Halliburton Energy Services, Inc. | Shuttle valve for autonomous fluid flow device |
WO2024043912A1 (en) * | 2022-08-25 | 2024-02-29 | Halliburton Energy Services, Inc. | Fluid diode |
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US10041347B2 (en) | 2014-03-14 | 2018-08-07 | Halliburton Energy Services, Inc. | Fluidic pulser for downhole telemetry |
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US11105183B2 (en) | 2016-11-18 | 2021-08-31 | Halliburton Energy Services, Inc. | Variable flow resistance system for use with a subterranean well |
US11753910B2 (en) * | 2016-11-18 | 2023-09-12 | Halliburton Energy Services, Inc. | Variable flow resistance system for use with a subterranean well |
WO2019089947A1 (en) * | 2017-11-01 | 2019-05-09 | Ensco International Incorporated | Automatic well control |
US11131161B2 (en) * | 2018-08-23 | 2021-09-28 | Halliburton Energy Services, Inc. | Shuttle valve for autonomous fluid flow device |
WO2024043912A1 (en) * | 2022-08-25 | 2024-02-29 | Halliburton Energy Services, Inc. | Fluid diode |
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