EP2877681A1 - System and method for delaying actuation using destructable impedance device - Google Patents

System and method for delaying actuation using destructable impedance device

Info

Publication number
EP2877681A1
EP2877681A1 EP13766029.6A EP13766029A EP2877681A1 EP 2877681 A1 EP2877681 A1 EP 2877681A1 EP 13766029 A EP13766029 A EP 13766029A EP 2877681 A1 EP2877681 A1 EP 2877681A1
Authority
EP
European Patent Office
Prior art keywords
orifice
sliding sleeve
impedance device
actuating system
base pipe
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.)
Withdrawn
Application number
EP13766029.6A
Other languages
German (de)
French (fr)
Inventor
Kristian Brekke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Flowpro Well Technology As
Original Assignee
Flowpro Well Technology As
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Flowpro Well Technology As filed Critical Flowpro Well Technology As
Publication of EP2877681A1 publication Critical patent/EP2877681A1/en
Withdrawn legal-status Critical Current

Links

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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
    • 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/063—Valve or closure with destructible element, e.g. frangible disc
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
    • 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
    • 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
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • 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

Definitions

  • This disclosure relates to a fracturing system and method for acquiring oil and gas.
  • Multi-stage Tracking is a method that involves pumping large amounts of pressurized water or gel, a proppant and/or other chemicals into the wellbore to create discrete multiple fractures into the reservoir along the wellbore.
  • proppant fracturing usually involves multiple steps and requires several tools in order to be performed successfully.
  • Such practice that will allow even distribution of proppant between fractures highly depends on setting, plugs between the fracture stages or using frack balls of increasing sizes.
  • plugs are either set after each fracture has been perforated and pumped, or frack balls are dropped from the surface to successively open fracturing valves placed along the well.
  • frack balls are dropped from the surface to successively open fracturing valves placed along the well.
  • balls of different diameters are dropped into the well corresponding to a specific fracturing valve's seat.
  • the ball will no longer pass through due to a decrease in well diameter.
  • tracking can take place.
  • the plugs must be drilled out and the balls must be recovered.
  • a delayed actuating system can comprise a base pipe comprising a first portion of an orifice, a sliding sleeve around the base pipe, the sliding sleeve comprising a second portion of said orifice, further said sliding sleeve maneuver able into a first position, wherein said first portion of said orifice rests at least partially over said second portion of said orifice, a second position, a distance away from said second position.
  • the delayed actuating system can comprise a biasing device biasing the sliding sleeve toward the second position, and a destructible impedance device at least partially in side said orifice, the destructible impedance device preventing the sliding sleeve from leaving the first position.
  • a method of delaying actuation comprising is disclosed.
  • the method can comprise connecting a base pipe within a pipe string, the base pipe comprising a first portion of an orifice, applying a force on a sliding sleeve using a biasing device, the force configured to actuate the sliding sleeve from a first position to a second position, the sliding sleeve comprising a second portion of an orifice, the sliding sleeve positionable into said first position, wherein the second position of the orifice rests at least partially over the first portion of the orifice, said second portion, a distance away from the second position, and preventing the sliding sleeve from leaving the first position using a destructible impedance device.
  • Figure 1A illustrates a side view of abase pipe.
  • Figure IB illustrates a front view of a base pipe.
  • Figure 1C illustrates a cross sectional view of a base pipe.
  • Figure 2 A illustrates a sliding sleeve
  • Figure 2B illustrates a front view of a sliding sleeve.
  • Figure 2C illustrates a cross sectional view of a sliding sleeve
  • Figure 2D illustrates a cross sectional view of a sliding sleeve that further comprises a fixed sleeve, and an actuator.
  • Figure 3 A illustrates a peripheral view of outer ring.
  • Figure 3B illustrates a front view of an outer ring.
  • Figure 4 A illustrates a valve casing
  • Figure 4B illustrates a fracking port of a valve casing
  • Figure 4C illustrates a production slot of a valve casing.
  • Figure 5 illustrates a fracturing valve at a fracturing state.
  • Figure 6 illustrates one example of an impedance device counteracting actuator, in an embodiment where impedance device is a tension device such as a string.
  • Figure 7 illustrates one example of an impedance device counteracting actuator, in an embodiment where impedance device is a compression device such as a bar.
  • Figure 8 illustrates fracturing valve at production state.
  • FIG. 1A illustrates a side view of a base pipe 100.
  • Base pipe 100 can be connected as a portion of a pipe string.
  • base pipe 100 can be a cylindrical material that can comprise different wall openings and/or slots.
  • Base pipe 100 wall openings can comprise insert port 101, fracking port 102, and/or production port 103.
  • Insert port 101 can be made of one or more small openings in a base pipe 100.
  • Fracking port 102 can also be made of one or more openings.
  • production port 103 can be a plurality of openings in base pipe 100.
  • Figure IB illustrates a front view of base pipe 100 further comprising a chamber 104.
  • Chamber 104 can be a cylindrical opening or a space created inside base pipe 100.
  • As such chamber 104 can be an opening that can allow material, such as frack fluid or hydrocarbons to pass through.
  • Figure 1C illustrates a cross sectional view of a base pipe 100. Each wall opening discussed above can be ckcularly placed around base pipe 100.
  • FIG. 2A illustrates a sliding sleeve 200 connected to a fixed sleeve 205 by an actuator 206, and in line with an outer ring 207.
  • sliding sleeve 200 can be a cylindrical tube that can comprise fracking port 102.
  • fracking port can have a first portion within base pipe 101 and a second portion within sliding sleeve 200.
  • Figure 2B illustrates a front view of a sliding sleeve 200 further comprising an outer chamber 201.
  • outer chamber 201 can be an opening larger than chamber 104. As such chamber 201 can be large enough to house base pipe 100.
  • FIG. 2C illustrates a cross sectional view of a sliding sleeve 200.
  • Sliding sleeve 200 can comprise a first sleeve 202 and a second sleeve 203.
  • First sleeve 202 and second sleeve 203 can be attached through one or more curved sheet 204, the spaces between each curved sheet 204 defining a portion of fracking port 102.
  • Inner surface of first sleeve 202 can have a bottleneck void, or any other void within the inner surface.
  • the void can extend radially around the complete inner diameter of base pipe 101, partially around the inner diameter, or locally. If completely around the inner diameter, the ends of inner surface can have a smaller diameter than the void.
  • Figure 2D illustrates a cross sectional view of a sliding sleeve 200 further comprising fixed sleeve 205, and actuator 206.
  • actuator 206 can be a biasing device.
  • biasing device can be a spring.
  • actuator can be bidirectional and/or motorized.
  • second sleeve 203 of sliding sleeve 200 can be attached to fixed sleeve 205 using actuator 206.
  • sliding sleeve 200 can be pulled towards fixed sleeve 205, thus compressing or otherwise load actuator 206 with potential energy. Later actuator 206 can be released or otherwise instigated, pushing sliding sleeve 200 away from fixed sleeve 205.
  • FIG 3 A illustrates a peripheral view of outer ring 207.
  • outer ring 207 can be a solid cylindrical tube forming a ring chamber 301, as seen in figure 3B.
  • outer ring 207 can be an enclosed solid material forming a cylindrical shape.
  • Ring chamber 301 can be the space formed inside outer ring 207.
  • ring chamber 301 can be large enough to slide over base pipe 100.
  • Figure 4A illustrates a valve casing 400.
  • valve casing 400 can be a cyhndrical material, which can comprise fracking port 102, and production port 103.
  • fracking port 102 can be a plurality of openings circularly placed around valve casing 400, as seen in Figure 4B.
  • production port 103 can be one or more openings placed around valve casing 400, as seen in Figure 4C.
  • FIG. 5 illustrates a fracturing valve 500 in fracturing mode.
  • fracturing valve 500 can comprise base pipe 100, sliding sleeve 200, outer ring 207, and/or valve casing 400.
  • base pipe 100 can be an innermost layer of fracturing valve 500.
  • a middle layer around base pipe 100 can comprise outer ring 207 fixed to base pipe 100 and sliding sleeve 200, wherein fixed sleeve 205 is fixed to base pipe 100.
  • Fracturing valve 500 can comprise valve casing 400 as an outer later.
  • Valve casing 400 can, in one embodiment, connect to outer ring 207 and fixed sleeve 205. In a fracking position, fracking port 102 can be aligned and open, due to the relative position of base pipe 100 and sliding sleeve 200.
  • Fracturing valve 500 can further comprise a frack ball 501, and one or more stop balls 502.
  • stop ball 502 can rest in insert port 101.
  • actuator 206 can be in a closed state, pushing stop ball 502 partially into chamber 104.
  • frack ball 501 can be released from the surface and down the well.
  • Frack ball 501 will be halted at insert port 101 by any protruding stop balls 502 while fracturing valve 500 is in a fracturing mode.
  • stop ball 502 can halt frack ball 501 , In this state, tracking port 102 will be open, allowing flow of proppant from chamber 104 through fracldng port 102 and into a formation, thereby allowing fracturing to take place.
  • FIG. 6 illustrates one example of an impedance device counteracting actuator 206, in an embodiment where impedance device is a tension device such as a string 601.
  • String 601 can connect sliding sleeve 200 with base pipe 100. While intact, string can prevent actuator 206 from releasing.
  • biasing device attempts to push or pull sliding sleeve 200 in one direction, it also applies a tension on string 601.
  • String 601 prevents actuator 206 from actuating. Once the suing 601 is broken, broken, actuator 206 can push sliding sleeve 200.
  • FIG. 7 illustrates a second example of an impedance device counteracting actuator 206, in an embodiment wherein impedance device is compression device such as a bar 701. While intact, bar 701 can prevent actuator 206 from releasing. As actuator 206 attempts to push or pull sliding sleeve 200 in one direction, it applies a tension force bar 701. Bar 701 can be held in place in a number of ways. In one embodiment, bar 701 can be connected to base pipe 100 and/or sliding sleeve 200 in a fixed manner. In another embodiment, the sheering force of sliding sleeve 200 and base pipe 100 can hold bar 700 into place. In another embodiment, bar 701 can fit into brackets attached to shding sleeve 200 and/or base pipe 100.
  • impedance device can be destructible.
  • a deshuctible impedance device is one that is designed to fail under the right conditions.
  • One method of breaking the impedance devices is by pushing a corrosive material reactive with impedance device 206 through tracking port, deteriorating the impedance until actuator 206 can overcome its impedance.
  • This method can work in embodiments wherein impedance device comprises a corrodible material (such as animal hair in the case of string 601). Corrosives material can be an chemical snch as hydrochloric acid. If impedance device comprises erodible material, then other methods can be used to break it.
  • empedance device is made of thin steel or some other material, it can predictably fail after enough fluid passes around it, eroding it over time.
  • Another method of breaking impedance device is by pushing a fluid comprising particulates snch as sand, glass or rocks through fracking port 102, in an embodiment wherein impedance device comprises an erodible material such as a soft rock, or sand that is mixed, formed and hardened with a weak epoxy.
  • Another method of breaking the impedance devices is by pushing a large object such as a ball down the hole and through fracking port 102.
  • Figure 8 illustrates fracturing valve 500 in production mode.
  • fracking port 102 can close and production port 103 can open.
  • track ball 501 can push stop balls 502 back into the inner end of first sleeve 202 which can further allow track ball 501 to slide through base pipe 101, to another fracturing valve 500.
  • production port 103 is opened, extraction of oil and gas can start.
  • production ports can have a check valve to allow fracking to continue downstream without pushing frack fluid through the production port.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Prostheses (AREA)
  • Gloves (AREA)
  • Mechanical Operated Clutches (AREA)
  • Multiple-Way Valves (AREA)
  • Food-Manufacturing Devices (AREA)
  • Pipe Accessories (AREA)
  • Lift Valve (AREA)

Abstract

This disclosure relates to system and method for delaying actuation using a destructible impedance device. In one embodiment, a delayed actuating system can comprise a base pipe (100) comprising a first portion (102) of an orifice, a sliding sleeve (200) around the base pipe, the sliding sleeve comprising a second portion of said orifice, further said sliding sleeve maneuverable into a first position, wherein said first portion of said orifice rests at least partially over said second portion of said orifice, a second position, a distance away from said second position. Further, the delayed actuating system can comprise a biasing device (206) biasing the sliding sleeve toward the second position, and a destructible impedance device (601,701) at least partially in side said orifice, the destructible impedance device preventing the sliding sleeve from leaving the first position.

Description

System and Method for Delaying Actuation using a Destructable Impedance
Title :
Device
BACKGROUND
[0001] This disclosure relates to a fracturing system and method for acquiring oil and gas.
[0002] The demand for natural gas and oil has significantly grown over the years making low productivity oil and gas reservoirs economically feasible, where hydraulic fracturing plays an important part in these energy productions throughout the world. For several decades different technology has been used to enhance methods for producing resources from oil and gas wells. Long horizontal wellbores with multiple fractures is one commonly used process to enhance extraction of oil and gas from wells. This process starts after a well has been drilled and the completion has been installed in the wellbore. Multi-stage Tracking is a method that involves pumping large amounts of pressurized water or gel, a proppant and/or other chemicals into the wellbore to create discrete multiple fractures into the reservoir along the wellbore.
[0003] One of the technologically advanced methods being used today is snnultaneous proppant fracturing of up to thirty fractures in one pumping operation. This method involves usage of proppant to prevent fractures from closing. However, this practice can usually cause an uneven distribution of proppant between the fractures , which will reduce the efficiency of the fracture system. As a result, this practice can also cause fractures to propagate in areas that are out of the target reservoir. Thus, such method can be inefficient and unsafe.
[0004] Additionally, proppant fracturing usually involves multiple steps and requires several tools in order to be performed successfully. Such practice that will allow even distribution of proppant between fractures highly depends on setting, plugs between the fracture stages or using frack balls of increasing sizes. In these methods, plugs are either set after each fracture has been perforated and pumped, or frack balls are dropped from the surface to successively open fracturing valves placed along the well. For each stage, balls of different diameters are dropped into the well corresponding to a specific fracturing valve's seat. At a point in the well, the ball will no longer pass through due to a decrease in well diameter. Once the ball is in place, tracking can take place. After fracking, the plugs must be drilled out and the balls must be recovered. With each fracturing stage while setting plugs, much time and energy is expended in tripping out of the hole between the stages and and drilling out the plugs. Moreover, land-based rigs are usually rented per day basis, and so any delays can be quite expensive. Also, only about 12 different fracture stages is possible with the ball method before a restriction in flow area due to small ball diameter makes fracturing difficult due to large pressure losses.
[0005] As such it would be useful to have an improved system and method for fracturing oil and gas wells. SUMMARY
[0006] This disclosure relates to a system and method for delaying actuation using a destructible impedance device, hi one embodiment, a delayed actuating system can comprise a base pipe comprising a first portion of an orifice, a sliding sleeve around the base pipe, the sliding sleeve comprising a second portion of said orifice, further said sliding sleeve maneuver able into a first position, wherein said first portion of said orifice rests at least partially over said second portion of said orifice, a second position, a distance away from said second position. Further, the delayed actuating system can comprise a biasing device biasing the sliding sleeve toward the second position, and a destructible impedance device at least partially in side said orifice, the destructible impedance device preventing the sliding sleeve from leaving the first position.
[0007] Additionally, a method of delaying actuation comprising is disclosed. The method can comprise connecting a base pipe within a pipe string, the base pipe comprising a first portion of an orifice, applying a force on a sliding sleeve using a biasing device, the force configured to actuate the sliding sleeve from a first position to a second position, the sliding sleeve comprising a second portion of an orifice, the sliding sleeve positionable into said first position, wherein the second position of the orifice rests at least partially over the first portion of the orifice, said second portion, a distance away from the second position, and preventing the sliding sleeve from leaving the first position using a destructible impedance device. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1A illustrates a side view of abase pipe.
[0009] Figure IB illustrates a front view of a base pipe.
[0010] Figure 1C illustrates a cross sectional view of a base pipe.
[0011] Figure 2 A illustrates a sliding sleeve.
[0012] Figure 2B illustrates a front view of a sliding sleeve.
[0013] Figure 2C illustrates a cross sectional view of a sliding sleeve,
[0014] Figure 2D illustrates a cross sectional view of a sliding sleeve that further comprises a fixed sleeve, and an actuator.
[0015] Figure 3 A illustrates a peripheral view of outer ring.
[0016] Figure 3B illustrates a front view of an outer ring.
[0017] Figure 4 A illustrates a valve casing.
[0018] Figure 4B illustrates a fracking port of a valve casing
[0019] Figure 4C illustrates a production slot of a valve casing.
[0020] Figure 5 illustrates a fracturing valve at a fracturing state. [0021] Figure 6 illustrates one example of an impedance device counteracting actuator, in an embodiment where impedance device is a tension device such as a string.
[0022] Figure 7 illustrates one example of an impedance device counteracting actuator, in an embodiment where impedance device is a compression device such as a bar.
[0023] Figure 8 illustrates fracturing valve at production state.
DETAILED DESCRIPTION
[0024] Described herein is an improved fracturing system and method for acquiring oil and gas . The following description is presented to enable any person skilled in the art to make and use the invention as claimed and is provided in the context of the particular examples discussed below, variations of which will be readily apparent to those skilled in the art. Tn the interest of clarity, not all features of an actual implementation are described in this specification. It will be appreciated that in the development of any such actual implementation (as in any development project), design decisions must be made to achieve the designers' specific goals (e.g., compliance with system- and business-related constraints), and that these goals will vary from one implementation to another. It will also be appreciated that such development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the field of the appropriate art having the benefit of this disclosure. Accordingly, the claims appended hereto are not intended to be limited by the disclosed embodiments , but are to be accorded their widest scope consistent with the principles and features disclosed herein. [0025] Figure 1A illustrates a side view of a base pipe 100. Base pipe 100 can be connected as a portion of a pipe string. In one embodiment, base pipe 100 can be a cylindrical material that can comprise different wall openings and/or slots. Base pipe 100 wall openings can comprise insert port 101, fracking port 102, and/or production port 103. Insert port 101 can be made of one or more small openings in a base pipe 100. Fracking port 102 can also be made of one or more openings. Further, production port 103 can be a plurality of openings in base pipe 100.
[0026] Figure IB illustrates a front view of base pipe 100 further comprising a chamber 104. Chamber 104 can be a cylindrical opening or a space created inside base pipe 100. As such chamber 104 can be an opening that can allow material, such as frack fluid or hydrocarbons to pass through. Figure 1C illustrates a cross sectional view of a base pipe 100. Each wall opening discussed above can be ckcularly placed around base pipe 100.
[0027] Figure 2A illustrates a sliding sleeve 200 connected to a fixed sleeve 205 by an actuator 206, and in line with an outer ring 207. In one embodiment, sliding sleeve 200 can be a cylindrical tube that can comprise fracking port 102. Thus fracking port can have a first portion within base pipe 101 and a second portion within sliding sleeve 200. Figure 2B illustrates a front view of a sliding sleeve 200 further comprising an outer chamber 201. In one embodiment outer chamber 201 can be an opening larger than chamber 104. As such chamber 201 can be large enough to house base pipe 100.
[0028] Figure 2C illustrates a cross sectional view of a sliding sleeve 200. Sliding sleeve 200 can comprise a first sleeve 202 and a second sleeve 203. First sleeve 202 and second sleeve 203 can be attached through one or more curved sheet 204, the spaces between each curved sheet 204 defining a portion of fracking port 102. Inner surface of first sleeve 202 can have a bottleneck void, or any other void within the inner surface. The void can extend radially around the complete inner diameter of base pipe 101, partially around the inner diameter, or locally. If completely around the inner diameter, the ends of inner surface can have a smaller diameter than the void.
[0029] Figure 2D illustrates a cross sectional view of a sliding sleeve 200 further comprising fixed sleeve 205, and actuator 206. In one embodiment, actuator 206, can be a biasing device. In such embodiment, biasing device can be a spring. In another embodiment, actuator can be bidirectional and/or motorized. In one embodiment second sleeve 203 of sliding sleeve 200 can be attached to fixed sleeve 205 using actuator 206. In one embodiment, sliding sleeve 200 can be pulled towards fixed sleeve 205, thus compressing or otherwise load actuator 206 with potential energy. Later actuator 206 can be released or otherwise instigated, pushing sliding sleeve 200 away from fixed sleeve 205.
[0030] Figure 3 A illustrates a peripheral view of outer ring 207. hi one embodiment outer ring 207 can be a solid cylindrical tube forming a ring chamber 301, as seen in figure 3B. In one embodiment outer ring 207 can be an enclosed solid material forming a cylindrical shape. Ring chamber 301 can be the space formed inside outer ring 207. Further, ring chamber 301 can be large enough to slide over base pipe 100. [0031] Figure 4A illustrates a valve casing 400. In one embodiment, valve casing 400 can be a cyhndrical material, which can comprise fracking port 102, and production port 103. In one embodiment, fracking port 102 can be a plurality of openings circularly placed around valve casing 400, as seen in Figure 4B. Further, production port 103 can be one or more openings placed around valve casing 400, as seen in Figure 4C.
[0032] Figure 5 illustrates a fracturing valve 500 in fracturing mode. In one embodiment fracturing valve 500 can comprise base pipe 100, sliding sleeve 200, outer ring 207, and/or valve casing 400. In such embodiment, base pipe 100 can be an innermost layer of fracturing valve 500. A middle layer around base pipe 100 can comprise outer ring 207 fixed to base pipe 100 and sliding sleeve 200, wherein fixed sleeve 205 is fixed to base pipe 100. Fracturing valve 500 can comprise valve casing 400 as an outer later. Valve casing 400 can, in one embodiment, connect to outer ring 207 and fixed sleeve 205. In a fracking position, fracking port 102 can be aligned and open, due to the relative position of base pipe 100 and sliding sleeve 200.
[0033] Fracturing valve 500 can further comprise a frack ball 501, and one or more stop balls 502. In one embodiment, stop ball 502 can rest in insert port 101. At a fracturing state, actuator 206 can be in a closed state, pushing stop ball 502 partially into chamber 104. In such state, frack ball 501 can be released from the surface and down the well. Frack ball 501 will be halted at insert port 101 by any protruding stop balls 502 while fracturing valve 500 is in a fracturing mode. As such, the protmding portion of stop ball 502 can halt frack ball 501 , In this state, tracking port 102 will be open, allowing flow of proppant from chamber 104 through fracldng port 102 and into a formation, thereby allowing fracturing to take place.
[0034] Figure 6 illustrates one example of an impedance device counteracting actuator 206, in an embodiment where impedance device is a tension device such as a string 601. String 601 can connect sliding sleeve 200 with base pipe 100. While intact, string can prevent actuator 206 from releasing. As biasing device attempts to push or pull sliding sleeve 200 in one direction, it also applies a tension on string 601. String 601 prevents actuator 206 from actuating. Once the suing 601 is broken, broken, actuator 206 can push sliding sleeve 200.
[0035] Figure 7 illustrates a second example of an impedance device counteracting actuator 206, in an embodiment wherein impedance device is compression device such as a bar 701. While intact, bar 701 can prevent actuator 206 from releasing. As actuator 206 attempts to push or pull sliding sleeve 200 in one direction, it applies a tension force bar 701. Bar 701 can be held in place in a number of ways. In one embodiment, bar 701 can be connected to base pipe 100 and/or sliding sleeve 200 in a fixed manner. In another embodiment, the sheering force of sliding sleeve 200 and base pipe 100 can hold bar 700 into place. In another embodiment, bar 701 can fit into brackets attached to shding sleeve 200 and/or base pipe 100.
[0036] In one embodiment, impedance device can be destructible. A deshuctible impedance device is one that is designed to fail under the right conditions. One method of breaking the impedance devices is by pushing a corrosive material reactive with impedance device 206 through tracking port, deteriorating the impedance until actuator 206 can overcome its impedance. This method can work in embodiments wherein impedance device comprises a corrodible material (such as animal hair in the case of string 601). Corrosives material can be an chemical snch as hydrochloric acid. If impedance device comprises erodible material, then other methods can be used to break it. If empedance device is made of thin steel or some other material, it can predictably fail after enough fluid passes around it, eroding it over time. Another method of breaking impedance device is by pushing a fluid comprising particulates snch as sand, glass or rocks through fracking port 102, in an embodiment wherein impedance device comprises an erodible material such as a soft rock, or sand that is mixed, formed and hardened with a weak epoxy. Another method of breaking the impedance devices is by pushing a large object such as a ball down the hole and through fracking port 102. The systems and methods described in this disclosure regarding delaying actuation using an impedance device can work for orifices other than fracking port 102, as well.
[0037] Figure 8 illustrates fracturing valve 500 in production mode. As sliding sleeve 200 is pushed towards outer ring 207 by actuator 206, fracking port 102 can close and production port 103 can open. Concurrently, track ball 501 can push stop balls 502 back into the inner end of first sleeve 202 which can further allow track ball 501 to slide through base pipe 101, to another fracturing valve 500. Once production port 103 is opened, extraction of oil and gas can start. In one embodiment, production ports can have a check valve to allow fracking to continue downstream without pushing frack fluid through the production port. [0038] Various changes in the details of the illustrated operational methods are possible without departing from the scope of the following claims. Some embodiments may combine the activities described herein as being separate steps. Similarly, one or more of the described steps may be omitted, depending upon the specific operational environment the method is being implemented in. It is to be understood that the above description is intended to be illustrative, and not restrictive. For example, the above- described embodiments may be used in combination with each other. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. In the appended claims, the terms "including" and "in which" are used as the plain-English equivalents of the respective terms "comprising" and "wherein."

Claims

A delayed actuating system comprising a base pipe comprising a first portion of an orifice; and a sliding sleeve around said base pipe, said sliding sleeve comprising a second portion of said orifice, further said sliding sleeve positionable into a first position, wherein said first portion of said orifice rests at least partially over said second portion of said orifice; and a second position, a distance away from said second position. a biasing device biasing said sliding sleeve toward said second position; and a destructible impedence device at least partially in side said orifice, said destructible impedence device preventing said sliding sleeve from leaving said first position.
The delayed actuating system of claim 1 wherein said destructible impedence device is a string.
The delayed actuating system of claim 2, wherein said destructible impedence device comprises a bar.
4. The delayed actuating system of claim 3 wherein said block is attached to said sliding sleeve.
5. The delayed actuating system of claim 3 wherein said block is attched to said base pipe.
6. The delayed actuating system of claim 1 wherein said impedance device is dissolvable by a chemical.
7. The delayed actuating system of claim 6 wherein said chemical is hydrochloric acid.
8. The delayed actuating system of claim 1 wherein said impedance device is erodable by particulates in a fluid stream passing through said orifice.
9. The delayed actuating system of claim 2 wherein said impedance device is dissolvable by a chemical.
10. The delayed actuating system of claim 9 wherein said chemical is hydrochloric acid.
11. The delayed actuating system of claim 2 wherein said impedance device is erodable by particulates in a fluid stream passing through said orifice.
12. The delayed actuating system of claim 3 wherein said impedance device is dissolvable by a chemical.
13. The delayed actuating system of claim 12 wherein said chemical is hydrochloric acid. The delayed actuating system of claim 3 wherein said impedance device is erodable by particulates in a fluid stream passing through said orifice.
A method of delaying actuation comprising connecting a base pipe within a pipe string, said base pipe comprising a first portion of an orifice; applying a force on a sliding sleeve using a biasing device, said force configured to actuate said from a first positoin to a second position, said sliding sleeve comprising a second portion of an orifice, said sliding sleeve positionable into said first position, wherein said second position of said orifice rests at least partially over said first portion of said orifice; and said second portion, a distance away from said second position; preventing said sliding sleeve from leaving said first position using a destructible impedance device.
The method of claim 15, wherein said impedance device is destnictible by a chemical.
The method of claim 16, further comprising the step pouring hydrochloric acid through said orifice to break said impedance device.
The method of claim 15 wherein said impedance device is destructible by errosion. The method of claim 18, further comprising the step sending a fluid comprising particulates through said orifice to errode said impedance device.
The method of claim 15 further comprising pushing an object though said orifice to break said impedance device.
EP13766029.6A 2013-09-20 2013-09-20 System and method for delaying actuation using destructable impedance device Withdrawn EP2877681A1 (en)

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AU2013395453B2 (en) 2017-12-07
EA201590098A1 (en) 2015-09-30
CA2886430A1 (en) 2015-03-26
AU2013395453A1 (en) 2015-04-09
MX2015000913A (en) 2016-08-01
EA029648B1 (en) 2018-04-30
CA2886430C (en) 2017-02-14
CN104903539B (en) 2017-08-25
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CN104903539A (en) 2015-09-09
BR112015011564B1 (en) 2021-07-27

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