WO2017124979A1 - 用于喷封压的装置以及包含其的管柱 - Google Patents

用于喷封压的装置以及包含其的管柱 Download PDF

Info

Publication number
WO2017124979A1
WO2017124979A1 PCT/CN2017/071167 CN2017071167W WO2017124979A1 WO 2017124979 A1 WO2017124979 A1 WO 2017124979A1 CN 2017071167 W CN2017071167 W CN 2017071167W WO 2017124979 A1 WO2017124979 A1 WO 2017124979A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner cylinder
disposed
cylinder
wall
pressure
Prior art date
Application number
PCT/CN2017/071167
Other languages
English (en)
French (fr)
Inventor
甘振维
戚斌
侯治民
胡顺渠
陈晨
谢志
王强
潘敏
赵伟
周怡君
Original Assignee
中国石油化工股份有限公司
中国石油化工股份有限公司西南油气分公司
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
Priority claimed from CN201610037080.7A external-priority patent/CN105672957B/zh
Priority claimed from CN201610037471.9A external-priority patent/CN105696984B/zh
Application filed by 中国石油化工股份有限公司, 中国石油化工股份有限公司西南油气分公司 filed Critical 中国石油化工股份有限公司
Priority to US16/071,143 priority Critical patent/US11236590B2/en
Priority to CA3010268A priority patent/CA3010268C/en
Priority to AU2017209220A priority patent/AU2017209220B2/en
Priority to BR112018014648-0A priority patent/BR112018014648B1/pt
Priority to MX2018008631A priority patent/MX2018008631A/es
Publication of WO2017124979A1 publication Critical patent/WO2017124979A1/zh
Priority to ZA2018/05528A priority patent/ZA201805528B/en

Links

Images

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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11—Perforators; Permeators
    • E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
    • 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
    • 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

  • the invention relates to the technical field of oil and gas completion and reservoir reforming, and particularly relates to a device for spray sealing pressure and a pipe string comprising the same.
  • staged fracturing technology can transform the reservoir in a targeted manner, expand the oil drainage area of the oil and gas production layer, and improve oil and gas recovery.
  • multi-stage segmented reservoir modification is usually carried out by first perforating and fracturing. That is, during the reservoir reconstruction process, the multi-stage segmentation perforation is performed by lowering the entrance hole gun to form a hole in the reservoir. The perforating gun is then raised into the formation. Next, the column with the packer is further lowered, and the packer is set by pitching. Again, the first stage sleeve of the packer is opened by pitching to expose the first stage of fracture holes that cooperate with the holes. Finally, the fracturing fluid is injected into the column, and the fracturing fluid enters the hole through the fracturing hole and forms a crack in the formation. After the fracturing is completed, the ball of the first level is again put into the upper level sliding sleeve to fracturing the upper layer.
  • the present invention proposes a device for spray sealing pressure and a tubular string including the same.
  • this device for spray sealing perforation and fracturing can be achieved by simply inserting the column once. Therefore, the device for the spray sealing pressure can reduce the working process, reduce the operation cost, and improve the accuracy and precision of the fracturing.
  • an apparatus for spray sealing pressure comprising:
  • the upper joint and the outer wall of the upper joint are provided with a fracturing hole connecting the inner and outer portions
  • a nozzle sleeve disposed at a lower end of the upper joint, and a nozzle connected to the inner and outer portions is disposed on the nozzle sleeve,
  • a packer disposed on the outer wall of the nozzle sleeve and the center rod, the packer having a cartridge assembly
  • first inner cylinder disposed inside the upper joint and slidably coupled to the upper joint, and in an initial state, the first inner cylinder blocks the fracture hole
  • a second inner cylinder disposed within the nozzle sleeve and slidably coupled to the nozzle sleeve, and in the initial state, the second inner cylinder blocks the nozzle
  • the second inner cylinder is configured to be movable relative to the nozzle sleeve to expose the nozzle, and at the same time, the rubber cylinder assembly is configured to be deformed under the action of the pressure liquid.
  • the packer is set to seal, and the first inner cylinder is configured to move relative to the upper joint to expose the fracture hole under the action of the second pressure.
  • the packer further comprises:
  • the upper end sleeve is fixedly connected to the outer tube on the outer wall of the nozzle sleeve, and the lower end of the outer tube extends over the center rod.
  • a piston cylinder formed by an upper end surface of the center rod, an inner wall of the outer cylinder, and a nozzle sleeve
  • the upper end is provided with a piston in the piston cylinder, and the lower end of the piston extends downward from the center rod and the outer cylinder and abuts against the rubber cylinder assembly, and the piston is slidably connected with the outer cylinder.
  • a first pressure transmitting hole is disposed on the side wall of the nozzle sleeve, and the first pressure transmitting hole is in communication with the cylinder.
  • a fourth pressure transmitting hole is disposed in the wall of the second inner cylinder, and the fourth pressure transmitting hole is configured to communicate with the first pressure transmitting hole after the second inner cylinder is moved downward.
  • the first pressure transmitting hole includes a first portion for communicating with the fourth pressure transmitting hole, and a second portion communicating with both the first portion and the piston cylinder, wherein the first portion is configured as a radially extending hole And the second portion is configured as a hole extending in the axial direction.
  • a reaming is constructed at the inlet of the first portion.
  • a first ratchet is disposed on an outer wall of the center rod, and a second ratchet that is engageable with the first ratchet is disposed on an inner wall of the piston,
  • a third ratchet is provided on the inner wall of the nozzle sleeve, and a fourth ratchet that can cooperate with the third ratchet is disposed on the outer wall of the first inner cylinder.
  • a first step is disposed on an inner wall of the upper joint, and a second step is disposed on an outer wall of the first inner cylinder, the second step is opposite to the first step and is provided by the upper joint and the first inner cylinder A pressure chamber is formed, and a third pressure transmitting hole communicating with the pressure chamber is disposed on the upper joint.
  • the inner wall of the second inner cylinder is configured with a ball seat that is configured to cooperate with the ball to close the inner cavity of the second inner cylinder when the ball is thrown into the second inner cylinder.
  • the method further includes an opening tool selectively disposed in the second inner cylinder and configured to close a lumen of the second inner cylinder, the opening tool comprising:
  • the elastic card is provided with a convex portion to cooperate with a groove provided on an inner wall of the second inner cylinder.
  • a shift ring is disposed at a lower end of the groove of the second inner cylinder, the shift ring being configured to be axially slidable relative to the second inner cylinder, and at an upper end surface of the retaining ring
  • a seal is disposed between the second inner cylinder and the second inner cylinder to compress the seal during upward movement relative to the second inner cylinder.
  • an elastic boost ring is disposed between the opening tool body and the tee.
  • a deblocking ring disposed at a lower end of the packer, an upper end of the unsealing ring is sleeved on an outer wall of the center rod, and a lower end is passed through a third shear pin
  • the joint is fixedly coupled, and the unsealing ring forms a first space for the relative movement of the unsealing ring and the lower joint with the center rod and the lower joint.
  • a tubular string is provided that includes the apparatus described above.
  • the invention has the advantages that the column of the device having the structure is lowered into the reservoir, and the inner cavity of the second inner cylinder is closed, and the pressure liquid is injected into the column.
  • the second inner cylinder moves relative to the nozzle sleeve to expose the nozzle, and at the same time, the packer is set.
  • the sand carrying fluid can be injected into the formation through a nozzle to create a high velocity jet to complete the reservoir perforation. Perforation in the reservoir After that, the pressure liquid is continuously pumped into the device.
  • the first inner cylinder moves downward to expose the fracture hole for the second inner cylinder that has been descended, and the pressure can be released into the column. Injecting the fracturing fluid (alternatively, it is also possible to simultaneously inject the fracturing fluid into the inside and outside of the column) to complete the large displacement fracturing.
  • the spray sealing device in which the second inner cylinder does not descend, the first inner cylinder does not move.
  • Figure 1 shows an apparatus for squirting pressure in an initial state according to a first embodiment of the present invention
  • Figure 2 is a view showing a device for sealing pressure in a state in which a ball and a ball seat are engaged according to a first embodiment of the present invention
  • Figure 3 is a view showing a device for squirting pressure in a state in which the second inner cylinder is moved down according to the first embodiment of the present invention
  • Figure 4 is a view showing the apparatus for squirting pressure in a state in which the first inner cylinder is moved down according to the first embodiment of the present invention
  • Figure 1A shows an apparatus for squirting pressure in an initial state according to a second embodiment of the present invention
  • FIG. 2A shows a device for squirting pressure in a state of an input opening tool according to a second embodiment of the present invention
  • 3A shows a device for squirting pressure in a state in which a second inner cylinder is moved down according to a second embodiment of the present invention
  • FIG. 4A is a view showing a device for squirting pressure in a state in which a first inner cylinder is moved down according to a second embodiment of the present invention
  • Figure 5 shows a tubular string in accordance with an embodiment of the present invention
  • Fig. 1 shows an apparatus 100 for squirting pressure in an initial state according to a first embodiment of the present invention.
  • the apparatus 100 includes a cylindrical upper joint 1, a nozzle sleeve 2, a center rod 3, a packer 4 (a member in a circle in FIG. 1), a lower joint 5, a first inner cylinder 60, and a second.
  • the upper joint 1 is configured in a cylindrical shape and is used for connection with the oil pipe 8 to feed the device 100 into the reservoir, and a fracturing hole 9 communicating with the inner and outer portions is provided on the outer wall of the upper joint 1.
  • the nozzle cover 2 is disposed at the lower end of the upper joint 1 and is configured in a cylindrical shape.
  • nozzles 7 communicating inside and outside are provided on the peripheral wall of the nozzle cover 2.
  • the center rod 3 is disposed at the lower end of the nozzle sleeve 2 and has a cylindrical shape.
  • the packer 4 is disposed on the outer wall of the lower end of the nozzle sleeve 2 and extends to the outer wall of the center rod 3 for use in the annulus 11 between the device 100 and the sleeve 10.
  • the packer 4 has a cartridge assembly 12.
  • the lower joint 5 is provided at the lower end of the center rod 3 and is configured in a cylindrical shape.
  • the first inner cylinder 60 is disposed inside the upper joint 1 and is slidably coupled to the upper joint 1.
  • the first inner cylinder 60 is used to seal the fracturing hole 9, and under the second pressure, the first inner cylinder 60 can be moved downward relative to the upper joint 1 to expose the fracturing hole 9.
  • the second inner cylinder 6 is slidably coupled to the nozzle sleeve 2 to ensure that the nozzle 7 is closed. Under the first pressure, the second inner cylinder 6 is moved downward to expose the nozzle 7.
  • the pressure liquid is injected into the column 50, when the pressure reaches the first
  • the second inner cylinder 6 moves relative to the nozzle sleeve 2 to expose the nozzle 7, as shown in FIG.
  • the cartridge assembly 12 is actuated to cause the packer 4 to sit.
  • the sand carrying liquid is injected into the second inner cylinder 6, and the sand carrying liquid can generate a high-speed jet through the nozzle 7 to enter the formation to complete the reservoir perforation.
  • the apparatus 100 for spray sealing can reduce the number of working steps and reduce the operating cost.
  • the fracturing is performed at the corresponding position, so that the device 100 can ensure the accuracy and precision of the fracturing, thereby improving the fracturing effect.
  • the packer 4 further comprises an outer cylinder 16, a piston cylinder 13, a piston 14 and a first pressure transmitting orifice 15.
  • the upper end of the outer cylinder 16 is fixedly connected to the outer wall of the nozzle sleeve 2, and the outer cylinder 16 extends downward and over the center rod 3.
  • the piston cylinder 13 is formed by the upper end surface of the center rod 3, the inner wall of the outer cylinder 16, and the nozzle sleeve 2.
  • the upper end of the piston 14 is disposed in the piston cylinder 13, and the lower end of the piston 14 extends downward between the center rod 3 and the outer cylinder 16 and abuts against the cartridge assembly 12.
  • the first pressure transmitting hole 15 is provided on the side wall of the nozzle cover 2. And the first pressure transmitting hole 15 can communicate with the piston cylinder 13 to inject the pressure fluid into the piston cylinder 13 through the first pressure transmitting hole 15. Further, the first pressure transmitting hole 15 is located at the upper end of the upper surface of the piston 14 so that the piston 14 can receive the pressurized liquid from the first pressure transmitting hole 15. Correspondingly, a fourth pressure transmitting hole 53 is provided in the wall of the second inner cylinder 6. In the initial state, the first pressure transmitting hole 15 is closed by the second inner cylinder 6.
  • the second shear pin 17 is sheared under pressure, and the second inner cylinder 6 can be moved downward to cause the fourth pressure transmitting hole 53 to communicate with the first pressure transmitting hole 15.
  • the pressurized fluid enters the piston cylinder 13 through the fourth pressure transmitting hole 53 and the first pressure transmitting hole 15 through the inner cavity of the second inner cylinder 6, and pushes the piston 14, so that the piston 14 moves downward, and the piston 14 moves downward.
  • the cartridge assembly 12 is pushed to cause the cartridge assembly 12 to act to seal the annulus 11.
  • the fourth pressure transmitting hole 53 and the first pressure transmitting hole 15 can communicate with each other in a relative contact manner.
  • the fourth pressure transmitting hole 53 and the first pressure transmitting hole 15 can also communicate through a gap formed between the nozzle cover 2 and the second inner cylinder 6.
  • the axial dimension of the second inner cylinder 6 can be relatively reduced, thereby increasing the strength of the second inner cylinder 6, and reducing the production cost.
  • the first pressure transmitting hole 15 may include a first portion 15' and a second portion 15" communicating with the first portion 15'. wherein the first portion 15' extends radially for communication with the fourth pressure transmitting hole 53, The second portion 15" extends axially in communication with both the first portion 15' and the piston cylinder 13 for providing positive pressure to the piston 14, more effectively urging the piston 14 to move.
  • the inlet of the first portion 15' i.e., where it is required to communicate with the fourth pressure transmitting hole 53
  • the first pressure transmitting hole 15 can more easily receive the pressure liquid while reducing the accuracy requirement of the apparatus 100.
  • the nozzle sleeve 2 can be constructed in a split configuration.
  • the nozzle sleeve 2 is configured as a first nozzle casing 2' and a second nozzle casing 2".
  • the second nozzle casing 2" is disposed at a lower end of the first nozzle casing 2'.
  • the nozzle 7 may be disposed on the outer wall of the first nozzle casing 2'.
  • the packer 4 is coupled to the second nozzle casing 2", and the first pressure transmitting hole 15 is disposed on the wall of the second nozzle casing 2".
  • the cartridge assembly 12 includes a plurality of cartridges 26 with a spacer 27 disposed between adjacent cartridges 26. In another alternative, no spacers are provided between the cartridges. For example, the cartridge assembly 12 includes three cartridges. The packing effect of the packer 4 is enhanced by this arrangement, thereby ensuring the perforation and fracturing efficiency of the device 100.
  • a push rod 29 is disposed between the piston 14 and the cartridge assembly 12 to transfer the force of the piston 14 to the cartridge assembly 12.
  • the upper end of the push rod 29 is fixedly coupled to the piston 14, the lower end is slidably coupled to the center rod 3, and the lower end surface is in contact with the rubber cylinder 26.
  • a first ratchet 18 is provided on the outer wall of the center rod 3.
  • a second ratchet 19 is provided on the inner wall of the piston 14.
  • the second ratchet 19 also moves downwardly, and after the piston 14 is moved into position such that the barrel 26 expands to seal the annulus 11, the second ratchet 19 and the first ratchet 18 Fit to prevent the cartridge assembly 12 from retracting.
  • a third ratchet 71 is provided on the inner wall of the nozzle cover 2.
  • a fourth ratchet 72 that can cooperate with the third ratchet 71 is disposed on the outer wall of the first inner cylinder 60.
  • the length of the first inner cylinder 60 in the axial direction can extend through the nozzle 7, thereby functioning to block the nozzle 7. That is, after the perforation is completed, the nozzle 7 can be closed by the first inner cylinder 60 to ensure that the fracturing fluid is completely discharged through the fracturing hole 9, thereby avoiding pressure loss and improving fracturing efficiency.
  • the second inner cylinder 6 and the second nozzle casing 2" are connected by the first shear pin 20.
  • the first shear pin 20 is sheared, so that the second inner cylinder 6 can be moved downward to expose the nozzle 7, and the fourth pressure transmitting hole 53 is connected to the first pressure transmitting hole 15.
  • the inner wall of the second inner cylinder 6 is constructed with a ball seat 21.
  • the ball 22 shown in Figure 2 can be cast through the ground toward the second inner cylinder 6.
  • the ball 22 cooperates with the ball seat 21 to close the inner cavity of the second inner cylinder 6.
  • pressurized fluid can be pumped into device 100.
  • the apparatus 100 further includes a deblocking ring 23 disposed at the lower end of the packer 4.
  • the upper end of the deblocking ring 23 is sleeved on the outer wall of the center rod 3, and the lower end is fixedly connected to the lower joint 5 via the third shear pin 24.
  • the deblocking ring 23 forms a first space 25 with the center rod 3 and the lower joint 5 to provide a relief space.
  • the joint 1 can be lifted up, and the center rod 3 and the lower joint 5 have a tendency to follow the upward movement of the upper joint 1, since the rubber cylinder 26 is in frictional contact with the annulus 11,
  • the third shear pin 24 is sheared by the pulling force.
  • the deblocking ring 23 moves relative to the lower joint 5 such that the cartridge 26 rebounds to unseal the packer 4.
  • the first inner cylinder 60 in the initial state, is fixed to the upper joint 1 by the fourth shear pin 56 for blocking the fracturing hole 9 in the initial state.
  • a first step 61 is disposed on an inner wall of the upper joint 1
  • a second step 62 is provided on the outer wall of the first inner cylinder 60.
  • the first step 61 is disposed opposite the second step 62 such that the upper joint 1 and the first inner cylinder 60 form a pressure chamber 63.
  • a third pressure transmitting hole 64 is provided in the wall of the upper joint 1 for communicating with the pressure chamber 63 so that the pressure liquid can be injected into the pressure chamber 63 through the annular space 11, thereby actuating the first inner cylinder 60 toward Move down.
  • the pressurized liquid is injected into the annulus 11, and the pressurized liquid enters the pressure chamber 63 through the third pressure transmitting hole 64.
  • the fourth shear pin 56 is sheared, thereby pushing the first inner cylinder 60 downward to expose the fracturing hole 9.
  • the downwardly moved first inner cylinder 60 blocks the nozzle 7, whereby the fracturing effect can be ensured when the pressure operation is performed.
  • a first inner cylinder seat 28 is formed on the inner wall of the second nozzle casing 2" for engaging with the lower end surface of the second inner cylinder 6, defining a downward movement position of the second inner cylinder 6.
  • the first The inner cylinder base 28 is configured as a step on the inner wall of the second nozzle casing 2". Thereby, during the downward movement of the second inner cylinder 6 by force, the lower end surface thereof is finally combined with the first inner cylinder base 28, and the downward movement position of the second inner cylinder 6 is positioned.
  • the axial dimensions of the first inner cylinder 60 and the second inner cylinder 6 are matched to ensure the downward movement position of the first inner cylinder 60. That is, after the first inner cylinder 60 is moved downward, the lower end surface thereof can be combined with the upper end surface of the second inner cylinder 6 to position the first inner cylinder 60.
  • the nozzle cover 2 has an upper end surface 54 that extends into the inner cavity of the upper joint 1, and at the same time, a third step 65 is formed on the outer wall of the first inner cylinder 60. Since the third step 65 is disposed opposite to the upper end surface 54, a second space 66 is formed between the first inner cylinder 60 and the upper joint 1 and the nozzle sleeve 2.
  • a second pressure transmitting hole 67 communicating with the second space 66 is provided on the wall of the first inner cylinder 60.
  • the fluid present in the second space 66 is discharged by the second pressure transmitting hole 67, thereby ensuring that the first inner cylinder 60 is smoothly moved downward.
  • the second pressure transmitting hole 67 is located at an end close to the third step 65. That is, the second pressure transmitting hole 67 is located at the uppermost end of the second space 66.
  • the invention also relates to a tubular string 50.
  • the tubular string 50 includes a tubing 8 and a device 100 fixedly coupled to the tubing 8, as shown in FIG.
  • a plurality of sequentially connected devices 100 can be disposed on a stack of tubes 50.
  • the diameters of the spherical seats 21 of the different second inner cylinders 6 of the apparatus 100 are sequentially decreased in the direction from top to bottom.
  • the second inner cylinder 6 can be moved step by step by inputting the balls 22 of different diameters to perform perforating and fracturing step by step.
  • the device with this structure is for the ground pump
  • the requirements for sending equipment are low, that is, in the case where the ground equipment is unchanged, the purpose of higher displacement and better fracturing effect can be achieved.
  • the tubular string 50 comprising the oil pipe 8 and the apparatus 100 is lowered into the casing 10 such that an annulus 11 is formed between the tubular string 50 and the casing 10.
  • the ball 22 is inserted into the oil pipe 8.
  • the ball 22 cooperates with the ball seat 21 of the second inner cylinder 6 of the corresponding stage to block the inner passage of the corresponding second inner cylinder 6.
  • the pressure fluid is pumped into the oil pipe 8.
  • the pressure fluid is blocked at the ball seat 21 at the corresponding stage.
  • the first pressure for example, the first pressure is 15-25 MPa
  • the first shear pin 20 is sheared, and then the second inner cylinder 6 is moved down to the first inner cylinder base 28, thereby exposing the nozzle 7 .
  • the fourth pressure transmitting hole 53 is in communication with the first pressure transmitting hole 15.
  • the pressurized fluid enters the piston cylinder 13 through the fourth pressure transmitting hole 53 and the first pressure transmitting hole 15, and pushes the piston 14 to move downward, so that the push rod 29 acts on the rubber cylinder 26, so that the rubber cylinder 26 expands.
  • the packer 4 is set.
  • the sand carrying liquid is injected into the oil pipe 8, and the sand carrying liquid is ejected at a high speed through the throttling action of the nozzle 7, and the sand carrying liquid penetrates the casing 10 and enters the stratum. Thereby holes are formed in the formation.
  • the pressure fluid is injected into the annulus 11.
  • the pressure fluid enters the pressure chamber 63 through the third pressure transmission hole 64.
  • the second pressure value for example, the second pressure value is 35-45 MPa
  • the fourth shear pin 56 is sheared, and the first inner portion
  • the barrel 60 is moved downward to expose the fracturing hole 9.
  • the first inner cylinder 60 after the downward movement blocks the nozzle 7 to avoid pressure loss.
  • the fracturing fluid is injected into the oil pipe 8, and the fracturing fluid is formed in the hole in the formation through the fracturing hole 9 into the perforation to complete the fracturing.
  • the fracturing fluid may be injected into the annulus 11 while the fracturing fluid is injected into the annulus 11 to perform rehydration.
  • the multi-stage perforation and fracturing of the reservoir can be completed by a single column 50, thereby reducing the construction process and improving the work efficiency.
  • the opening of the inner cavity of the inner cylinder 6 is achieved by the opening tool 40 instead of using the pitching method as in the first embodiment.
  • other configurations and operational principles of the apparatus 100 in the second embodiment are substantially the same as those of the apparatus 100 of the first embodiment. Thus, only some of the structure and description of the opening tool 40 and the opening tool 40 will be described below.
  • the apparatus 100 further includes an opening tool 40 selectively disposed in the second inner barrel 6 for closing the inner cavity of the second inner barrel 6.
  • the opening tool 40 includes an opening tool body 41, an elastic card 42, a ball seat 21', and a ball 22'.
  • the opening tool body 41 is configured in a cylindrical shape for being disposed in the second inner cylinder 6.
  • the elastic card 42 is disposed at the upper end of the opening tool body 41.
  • the elastic card 42 may be plural and distributed along the circumference.
  • a ball seat 21' is provided at the lower end of the opening tool body 41 for placing the ball 22'.
  • a projection 43 is provided on the elastic card 42.
  • a recess 44 (shown in Figure 1A) is provided on the second inner cylinder 6 for mating with the projection 43.
  • the elastic card 42 is flared outwardly so that the projection 43 cooperates with the recess 44, thereby The opening tool 40 is positioned on the second inner cylinder 6. In this case, the internal circulation passage of the second inner cylinder 6 is blocked, and at this time, the second inner cylinder 6 can be urged to move downward by injecting the pressurized liquid.
  • the downward movement of the second inner cylinder 6 can be realized, and the incomplete full diameter caused by the downward movement of the second inner cylinder 6 by the pitching method can be avoided and The number of stages is limited. That is, the full diameter of the pipe string 50 is achieved by this arrangement, thereby achieving "numerous" class fracturing construction.
  • a first inner cylinder holder 28 is provided on the inner wall of the nozzle sleeve 2 for defining the downward movement position of the second inner cylinder 6.
  • the first inner cylinder block 28 can be constructed as a stepped structure.
  • the fourth step 45 is provided on the inner wall of the lower end of the recess 44 of the second inner cylinder 6 in the direction from the top to the bottom.
  • a stopper 47 is provided on the inner wall of the lower end of the second inner cylinder 6.
  • the limiting member 47 is configured in a cylindrical shape and fixedly coupled to the second inner cylinder 6 and forms a fifth step 46 projecting radially inward.
  • a shift ring 48 is provided at the lower end of the groove 44, and the shift ring 48 is configured in a cylindrical shape.
  • a radially outwardly projecting protruding ring 49 is provided on the axially intermediate portion of the outer wall of the retaining ring 48.
  • the lower end surface of the protruding ring 49 abuts on the fifth step 46 such that the upper end surface of the retaining ring 48 opposes the fourth step 45, and the lower end surface of the retaining ring 48 extends out of the lower end surface of the second inner cylinder 6.
  • a sealing member 51 is provided between the upper end surface of the retaining ring 48 and the fourth step 45.
  • the seal 51 can be a rubber sleeve.
  • the opening tool 40 is put in and the opening tool 40 is moved down together with the second inner cylinder 6, and when the retaining ring 48 is combined with the first inner cylinder base 28, the second inner cylinder 6 continues to move downward, so that the sealing member 51 expands.
  • the seal between the second inner cylinder 6 and the opening tool 40 is increased.
  • the seal between the second inner cylinder 6 and the opening tool 40 can be improved to ensure that the second inner cylinder 6 can be smoothly moved down after the injection of the pressurized liquid.
  • an elastic boost ring 52 is provided between the opening tool body 41 and the ball seat 21' in the axial direction.
  • the elastic boost ring 52 can be a rubber ring. Reduced by setting the elastic boost ring 52 The gap between the opening tool 40 and the oil pipe 8 and the like is opened. Thereby, in the process of feeding the opening tool 40 by pressurization, the liquid leakage is reduced, so that the opening tool 40 can be fed in more smoothly.
  • the apparatus 100 further includes a deblocking ring 23 disposed at the lower end of the packer 4.
  • the upper end of the unsealing ring 23 is sleeved on the outer wall of the center rod 3, and the lower end is fixedly connected to the lower joint 5 via the third shear pin 24.
  • the unsealing retaining ring 23 forms a first space 25 with the center rod 3 and the lower joint 5 to provide a evasive space.
  • the joint 1 can be lifted up, and the center rod 3 and the lower joint 5 have a tendency to follow the upward movement of the upper joint 1, since the rubber cylinder 26 is in frictional contact with the annulus 11,
  • the third shear pin 24 is sheared by the pulling force. After the third shear pin 24 is sheared, the expanded cartridge 26 pushes the unsealing ring 23 downward to unseal the packer 4.
  • the tubular string 50 comprising the oil pipe 8 and the apparatus 100 but without the opening tool 40 is lowered into the casing 10 such that an annulus 11 is formed between the tubular string 50 and the casing 10.
  • the opening tool 40 is put into the oil pipe 8.
  • the opening tool 40 cooperates with the second inner cylinder 6 of the corresponding stage to block the inner passage of the second inner cylinder 6.
  • the pressure fluid is pumped into the oil pipe 8.
  • the first pressure for example, the first pressure is 15-25 MPa
  • the first shear pin 20 is sheared, and the second inner cylinder 6 and the opening tool 40 are moved down to the first inner cylinder base 28, thereby The nozzle 7 is exposed.
  • the pressurized fluid enters the piston cylinder 13 through the fourth pressure transmitting hole 53 and the first pressure transmitting hole 15, and pushes the piston 14 to move downward, so that the push rod 29 acts on the rubber cylinder 26, so that the rubber cylinder 26 expands.
  • the packer 4 is set.
  • the sand carrying liquid is injected into the oil pipe 8, and the sand carrying liquid is ejected at a high speed through the throttling action of the nozzle 7, and the sand carrying liquid penetrates the casing 10 and enters the stratum. Thereby holes are formed in the formation.
  • the pressure fluid is injected into the annulus 11.
  • the pressure fluid enters the pressure chamber 63 through the third pressure transmission hole 64.
  • the second pressure value for example, the second pressure value is 35-45 MPa
  • the fourth shear pin 56 is sheared, and the first inner portion
  • the barrel 60 is moved downward to expose the fracturing hole 9.
  • the first inner cylinder 60 after the downward movement blocks the nozzle 7 to avoid pressure loss and ensure the fracturing effect.
  • the fracturing fluid is injected into the oil pipe 8, and the fracturing fluid is formed in the hole in the formation through the fracturing hole 9 into the perforation to complete the fracturing.
  • the fracturing fluid in order to increase the displacement and improve the fracturing effect, while the fracturing fluid is injected into the oil pipe 8, the fracturing fluid can be injected into the annulus 11 to perform rehydration.
  • the multi-stage perforation and fracturing of the reservoir can be completed by a single column 50, thereby reducing the construction process and improving the work efficiency.
  • orientation terms “upper” and “lower” are both referenced to the orientation in which the device 100 is placed into the formation.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Punching Or Piercing (AREA)

Abstract

一种用于喷封压的装置（100）以及包含其的管柱（50），该装置（100）包括上接头（1）、喷嘴套（2）、中心杆（3）、封隔器（4）、下接头（5）、设置在上接头（1）内的第一内筒（60），设置在喷嘴（7）套（2）内的第二内筒（6）。其中，上接头（1）上设置压裂孔（9），喷嘴套（2）上设置喷嘴（7）。在初始状态下，第一内筒（60）封堵压裂孔（9），第二内筒（6）封堵喷嘴（7）。在第二内筒（6）的内腔被封闭后，向装置（100）内泵送压力液，当压力达到第一压力时，第二内筒（6）下移露出喷嘴（7），且封隔器（4）坐封，此时可进行射孔。射孔完成后，向环空（11）内注入压力液，当压力达到第二压力时，第一内筒（60）下移露出压裂孔（9），此时可进行压裂作业，通过该装置（100）能够提高工作效率，降低作业成本。

Description

用于喷封压的装置以及包含其的管柱
相关申请的交叉引用
本申请要求享有于2016年1月20日提交的名称为“用于多向压力控制式喷封压的工具以及包含其的管柱”的中国专利申请CN201610037471.9的优先权，该申请的全部内容通过引用并入本文中；
本申请要求享有于2016年1月20日提交的名称为“用于多向压力控制式喷封压的工具以及包含其的管柱”的中国专利申请CN201610037080.7的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明涉及油气完井以及储层改造等技术领域，具体涉及一种用于喷封压的装置以及包含其的管柱。
背景技术
随着非常规油气藏勘探开发的推进，完井分段压裂技术作为非常规油气资源开采的主要增产措施也发展迅猛。完井分段压裂技术可有针对性地对储层进行改造，扩大油气产层的泄油面积，提高油气采收率。
现有技术中，多级分段储层改造通常采用先射孔后压裂的方法进行。也就是，在储层改造过程中，先下入射孔枪进行多级分段射孔，以在储层中形成孔洞。然后，将射孔枪提出地层。接着，再下入具有封隔器的管柱，并通过投球的方式使封隔器坐封。再次，通过投球的方式打开封隔器的第一级滑套，以露出与孔洞配合的第一级压裂孔。最后，向管柱内注入压裂液，压裂液通过压裂孔进入到孔洞中，并在地层内形成裂缝。在压裂完成后，再次投入大一级的球打开上一级滑套对上一层地层进行压裂。
通过上述方法，虽然能完成对储层的改造，但是需要下入多次管柱才能完成射孔和加砂压裂。由此，通过上述方法不仅增加了作业工序，提高了作业成本，而且降低了压裂的准确性和精准性。
发明内容
针对现有技术中所存在的上述技术问题的部分或者全部，本发明提出了一种用于喷封压的装置以及包含其的管柱。使用该用于喷封压的装置，只需要下入一次管柱便能实现射孔和压裂。从而，该用于喷封压的装置能减少作业工序，降低作业成本，同时提高了压裂的准确性和精准度。
根据本发明的一方面，提出了一种用于喷封压的装置，包括：
上接头，上接头的外壁上设置连通内外的压裂孔，
设置在上接头的下端的喷嘴套，在喷嘴套上设置连通内外的喷嘴，
设置在喷嘴套的下端的中心杆，
设置在喷嘴套和中心杆的外壁上的封隔器，封隔器具有胶筒组件，
设置在中心杆的下端的下接头，
设置在上接头之内并能与上接头滑动式连接的第一内筒，在初始状态下，第一内筒封堵压裂孔，
设置在喷嘴套之内并能与喷嘴套滑动式连接的第二内筒，在初始状态下，第二内筒封堵喷嘴，
其中，在第二内筒的内腔封闭后，在第一压力作用下，第二内筒构造为能相对喷嘴套移动而露出喷嘴，同时，胶筒组件构造为能在压力液作用下变形以使得封隔器坐封，在第二压力作用下，第一内筒构造为相对于上接头移动而露出压裂孔。
在一个实施例中，封隔器还包括：
上端套式固定连接在喷嘴套的外壁上的外筒，外筒的下端延伸过中心杆，
由中心杆的上端面、外筒的内壁和喷嘴套形成的活塞缸，
上端设置在活塞缸内的活塞，活塞的下端由中心杆与外筒之间向下延伸并与胶筒组件抵接，活塞与外筒滑动式连接，
设置在喷嘴套的侧壁上的第一传压孔，第一传压孔与缸连通。
在一个实施例中，在第二内筒的壁上设置第四传压孔，第四传压孔构造为在第二内筒下移后与第一传压孔连通。
在一个实施例中，第一传压孔包括用于与第四传压孔连通的第一部分，以及与第一部分和活塞缸均连通的第二部分，其中第一部分构造为沿径向延伸的孔，而第二部分构造为沿轴向延伸的孔。
在一个实施例中，在第一部分的入口处构造有扩孔。
在一个实施例中，在中心杆的外壁上设置第一棘齿，在活塞的内壁上设置能与第一棘齿配合的第二棘齿，
或/和在喷嘴套的内壁上设置第三棘齿，在第一内筒的外壁上设置能与第三棘齿相配合的第四棘齿。
在一个实施例中，在上接头上的内壁上设置第一台阶，在第一内筒的外壁上设置第二台阶，第二台阶与第一台阶相对式设置并由上接头和第一内筒形成压力腔，并在上接头上设置连通压力腔的第三传压孔。
在一个实施例中，第二内筒的内壁上构造有球座，在向第二内筒中投球时，球座构造为能与球配合以封闭第二内筒的内腔。
在一个实施例中，还包括选择性设置在所述第二内筒中并用于封闭所述第二内筒的内腔的开启工具，所述开启工具包括：
开启工具主体，
由所述开启工具主体向上延伸的弹性卡片，
设置在所述开启工具主体下端的球座，
与所述球座配合的球，
其中，所述弹性卡片上设置有凸起部以与设置在所述第二内筒的内壁上的凹槽相配合。
在一个实施例中，在所述第二内筒的凹槽的下端设置档环，所述档环构造为能相对于所述第二内筒轴向滑动，并且在所述档环的上端面和第二内筒之间设置密封件以使得所述档环在相对于所述第二内筒向上移动过程中压缩所述密封件。
在一个实施例中，在所述开启工具主体和所述球座之间设置弹性助推环。
在一个实施例中，还包括设置在所述封隔器下端的解封档环，所述解封档环的上端套接在所述中心杆的外壁上，下端通过第三剪切销与所述下接头固定连接，所述解封档环与所述中心杆和所述下接头形成用于所述解封档环和所述下接头相对移动的第一空间。
根据本发明的另一方面，提出了一种管柱，其包括上述的装置。
与现有技术相比，本发明的优点在于，在将具有这种结构的装置的管柱下入到储层，并使得第二内筒的内腔封闭，向管柱内注入压力液，当压力达到第一压力的时候，第二内筒相对喷嘴套移动而露出喷嘴，同时，封隔器坐封。从而，携砂液可以通过喷嘴产生高速射流而进入地层，以完成储层射孔。在储层射孔完成 后，继续向装置内泵送压力液，当压力达到第二压力时，对于第二内筒已下行的喷封压装置，第一内筒下移而露出压裂孔，则可以向管柱内注入压裂液(备选地，也可以向管柱内外侧同时注入压裂液)，以完成大排量压裂。而对于第二内筒未发生下行的喷封压装置，第一内筒不发生移动。由此，使用该用于喷封压的装置，只需要下入一次管柱便能实现射孔和压裂。从而，该用于喷封压的装置能减少作业工序，降低作业成本。同时，在改造储层过程中，由于射孔完成后便在相对应位置进行压裂，由此保证了压裂的准确性和精准度，从而提高了压裂效果。
附图说明
下面将结合附图来对本发明的优选实施例进行详细地描述，在图中：
图1显示了根据本发明的第一实施例的初始状态下的用于喷封压的装置；
图2显示了根据本发明的第一实施例的球与球座配合状态下的用于喷封压的装置；
图3显示了根据本发明的第一实施例的第二内筒下移状态下的用于喷封压的装置；
图4显示了根据本发明的第一实施例的第一内筒下移状态下的用于喷封压的装置；
图1A显示了根据本发明的第二实施例的初始状态下的用于喷封压的装置；
图2A显示了根据本发明的第二实施例的投入开启工具状态下的用于喷封压的装置；
图3A显示了根据本发明的第二实施例的第二内筒下移状态下的用于喷封压的装置；
图4A显示了根据本发明的第二实施例的第一内筒下移状态下的用于喷封压的装置；
图5显示了根据本发明的实施例的管柱；
在附图中，相同的部件使用相同的附图标记，附图并未按照实际的比例绘制。
具体实施方式
下面将结合附图对本发明做进一步说明。
图1显示了根据本发明的第一实施例的初始状态下的用于喷封压的装置100。 如图1所示，装置100包括筒状的上接头1、喷嘴套2、中心杆3、封隔器4(图1中圆圈内的部件)、下接头5、第一内筒60和第二内筒6。其中，上接头1构造为筒状，并用于与油管8连接，以将装置100送入到储层中，并且在上接头1的外壁上设置连通内外的压裂孔9。喷嘴套2设置在上接头1的下端，并构造为筒状。同时，在喷嘴套2的周壁上设置连通内外的喷嘴7。中心杆3设置在喷嘴套2的下端，并呈筒状。封隔器4设置在喷嘴套2的下端外壁上，并延伸到中心杆3的外壁上，以用于封隔装置100与套管10之间的环空11。并且，封隔器4具有胶筒组件12。下接头5设置在中心杆3的下端，并构造为筒状。第一内筒60设置在上接头1之内，并与上接头1滑动式连接。在初始状态下，第一内筒60用于封堵压裂孔9，而在第二压力作用下，第一内筒60能相对于上接头1下移，而露出压裂孔9。第二内筒6与喷嘴套2滑动式连接以保证封堵喷嘴7，在第一压力作用下，第二内筒6下移以露出喷嘴7。
由此，在将具有这种结构的装置100的管柱50下入到储层后，并使得第二内筒6的内腔封闭，再向管柱50内注入压力液，当压力达到第一压力时，第二内筒6相对喷嘴套2移动而露出喷嘴7，如图3所示。同时，胶筒组件12受促动而使封隔器4坐封。从而，再向第二内筒6注入携砂液，携砂液可以通过喷嘴7产生高速射流而进入地层，以完成储层射孔。在储层射孔完成后，如图4所示，通过注入压力液，当压力达到第二压力时，使得第一内筒60下移而露出压裂孔9，则此时可以向管柱50内以及环空同时注入压裂液，以完成大排量压裂。由此，使用该用于喷封压的装置100，只需要下入一次管柱50便能实现射孔和压裂。从而，该用于喷封压的装置100能减少作业工序，降低作业成本。同时，在改造储层过程中，由于射孔完成后便在相对应位置进行压裂，由此该装置100能保证压裂的准确性和精准度，从而提高了压裂效果。
根据本发明，封隔器4还包括外筒16、活塞缸13、活塞14和第一传压孔15。其中，外筒16的上端套式固定连接在喷嘴套2的外壁上，而外筒16向下延伸并越过中心杆3。从而，由中心杆3的上端面、外筒16的内壁和喷嘴套2形成了活塞缸13。活塞14的上端设置在活塞缸13内，活塞14的下端由中心杆3与外筒16之间向下延伸并与胶筒组件12抵接。同时，在初始状态下，活塞14与外筒16通过第二剪切销17连接。第一传压孔15设置在喷嘴套2的侧壁上。并且第一传压孔15能与活塞缸13连通，以通过第一传压孔15向活塞缸13内注入压力液。 另外，第一传压孔15位于位于活塞14的上表面的上端，以使得活塞14能承接来自第一传压孔15的压力液。相对应地，在第二内筒6的壁上设置第四传压孔53。在初始状态下，第一传压孔15由第二内筒6封闭。在注入压力液过程中，在压力作用下，第二剪切销17被剪断，第二内筒6能下移而使得第四传压孔53与第一传压孔15连通。由此，压力液通过第二内筒6的内腔经由第四传压孔53和第一传压孔15进入活塞缸13并推动活塞14，而使得活塞14向下移动，下移的活塞14推动胶筒组件12，以使得胶筒组件12作用而封隔环空11。
需要说明地是，当第二内筒6下移到位后，第四传压孔53与第一传压孔15可以相对接触式连通。当然，第四传压孔53与第一传压孔15还可以通过形成在喷嘴套2和第二内筒6之间的间隙连通。在第二种情况下，可以相对减小第二内筒6的轴向尺寸，从而提高第二内筒6的强度，降低生产成本。
优选地，第一传压孔15可包含第一部分15’和与第一部分15’连通的第二部分15”。其中，第一部分15’径向延伸以用于与第四传压孔53连通，而第二部分15”轴向延伸与第一部分15’和活塞缸13均连通，以用于为活塞14提供正压力，更有效地促动活塞14移动。进一步优选地，第一部分15’的入口处(也就是需要与第四传压孔53连通处)构造为扩口形式，以更好的接受第四传压孔53供给的压力液。通过这种设置能使得第一传压孔15能更容易地接受压力液，同时降低装置100的精度要求。
为了便于加工和安装，喷嘴套2可以构造为分体式结构。例如，如图1所示，喷嘴套2构造为第一喷嘴套体2’和第二喷嘴套体2”。其中，第二喷嘴套体2”设置在第一喷嘴套体2’的下端，并与第一喷嘴套体2’固定连接。并且，喷嘴7可以设置在第一喷嘴套体2’的外壁上。而封隔器4与第二喷嘴套体2”连接，且第一传压孔15设置在第二喷嘴套体2”的壁上。
为了保证封隔的安全性，胶筒组件12包括多个胶筒26，并且在相邻的胶筒26之间设置隔环27。在另一种备选的情况中，胶筒之间不设置隔环。例如，胶筒组件12包括三个胶筒。通过这种设置提高了封隔器4的封隔效果，从而保证了装置100的射孔和压裂效率。
为了使得胶筒26受力均匀，在活塞14和胶筒组件12之间设置推杆29，以传递活塞14的力到胶筒组件12上。推杆29的上端与活塞14固定连接，下端与中心杆3滑动式连接，并且下端面与胶筒26抵接。
为了防止胶筒组件12回退，在中心杆3的外壁上设置第一棘齿18。同时，在活塞14的内壁上设置第二棘齿19。在活塞14向下移动过程中，第二棘齿19也随之向下移动，待活塞14移动到位使得胶筒26膨胀而封隔环空11之后，第二棘齿19与第一棘齿18配合，以防止胶筒组件12回退。通过这种设置能保证封隔器4的坐封安全性，从而保证后续的射孔和压裂操作。
同理地，在喷嘴套2的内壁上设置第三棘齿71。相对应地，在第一内筒60的外壁上设置能与所述第三棘齿71相配合的第四棘齿72。通过这种设置当第一内筒60在下移露出压裂孔9后，第三棘齿71与第四棘齿72配合，以防止第一内筒60回退。
另外，优选的，在第一内筒60下移后，第一内筒60在轴向方向的长度能延伸过喷嘴7，从而起到封堵喷嘴7的作用。也就是，在射孔完成后，可以通过第一内筒60封堵喷嘴7，以保证压裂液完全通过压裂孔9排出，由此避免了压力损失，提高了压裂效率。
根据本发明，第二内筒6与第二喷嘴套体2”通过第一剪切销20连接。从而，在封堵第二内筒6的内腔并向其内注入压力液过程中，随着压力增大到第一压力时，第一剪切销20被剪断，从而可以使得第二内筒6下移而露出喷嘴7，并使得第四传压孔53与第一传压孔15连通。这种结构简单，易于实现。
在第一个优选的实施例中，第二内筒6的内壁上构造有球座21。在将装置100下入地层后，可通过地面向第二内筒6中投球22(图2中示出)。球22与球座21配合以封闭第二内筒6的内腔。此时，可向装置100内泵送压力液。
在一个优选的实施例中，装置100还包括设置在封隔器4下端的解封挡环23。解封挡环23的上端套接在中心杆3的外壁上，下端通过第三剪切销24与下接头5固定连接。同时，解封挡环23与中心杆3和下接头5形成第一空间25，以提供避让空间。在需要解封封隔器4的情况下，可以上提上接头1，中心杆3和下接头5具有跟随上接头1向上运动的趋势，由于胶筒26与环空11摩擦式接触，则在拉力作用下第三剪切销24被剪断。在第三剪切销24被剪断后，解封挡环23与下接头5相对运动使得胶筒26回弹则而解封封隔器4。通过这种设置能提高装置100的作业安全性，以用于在突发情况下将管柱50由套筒10中提出。
根据本发明，在初始状态下，第一内筒60通过第四剪切销56固定在上接头1上，用于在初始状态下封堵压裂孔9。在上接头1的内壁上设置第一台阶61， 并且在第一内筒60的外壁上设置第二台阶62。第一台阶61与第二台阶62相对式设置以使得上接头1和第一内筒60形成压力腔63。同时，在上接头1的壁上设置第三传压孔64以用于与压力腔63连通，以使得能通过环空11向压力腔63内注入压力液，从而促动第一内筒60向下移动。具体地，在射孔完成后，封隔器4处于坐封的情况下，向环空11内注入压力液，压力液通过第三传压孔64进入压力腔63。在压力作用下，第四剪切销56被剪断，从而推动第一内筒60下移而露出压裂孔9。同时，下移的第一内筒60封堵喷嘴7，由此，在进行压力操作时，能保证压裂效果。
在第二喷嘴套体2”的内壁上构造有第一内筒座28，以用于与第二内筒6的下端面配合，限定第二内筒6的下移位置。优选地，第一内筒座28构造为位于第二喷嘴套体2”的内壁上的台阶。由此，在第二内筒6受力向下移动过程中，最终其下端面与第一内筒座28复合，而定位第二内筒6的下移位置。
同理地，第一内筒60和第二内筒6的轴向尺寸相配合，以保证第一内筒60的下移位置。也就是，第一内筒60受力下移后，其下端面能与第二内筒6的上端面相复合，以定位第一内筒60的位置。另外，喷嘴套2具有延伸到上接头1的内腔中的上端面54，同时，在第一内筒60的外壁上构造有第三台阶65。由于第三台阶65与上端面54相对式设置，则在第一内筒60与上接头1和喷嘴套2之间形成了第二空间66。为了保证第一内筒60顺利下移，在第一内筒60的壁上设置与第二空间66连通的第二传压孔67。在第一内筒60相对于喷嘴套2下移过程中，存在于第二空间66内的流体由第二传压孔67排出，从而保证了第一内筒60顺利下移。优选地，第二传压孔67位于靠近第三台阶65的一端。也就是，第二传压孔67位于第二空间66的最上端处。
本发明还涉及一种管柱50。管柱50包括油管8和与油管8固定连接的装置100，如图5所示。为了提高储层改造规模，提高工作效率。可以在一趟管柱50上设置多个依次连接的装置100。而为了实现第二内筒6的封堵，在由上到下的方向上，装置100的不同的第二内筒6的球座21的直径依次减小。由此，在将管柱50下入到地层中后，可通过投入不同直径的球22，逐级促动第二内筒6移动，以逐级进行射孔和压裂。尤其在对当级进行射孔和压裂的过程中，由于目的层之上的封隔器4未启动坐封，目的层及以下的封隔器4实现了坐封，携砂液或者压裂液只能由当级的装置100进入地层。由此，具有这种结构的装置对地面泵 送设备要求低，也就是，在地面设备不变的情况下，能实现作业排量更高，压裂效果更好的目的。
下面根据图1-5详细论述使用具有装置100的管柱50进行改造地层的方法。
第一步，将包含油管8和装置100的管柱50下入到套管10中，并使得管柱50与套管10之间形成环空11。
第二步，向油管8内投入球22。球22与相应级的第二内筒6的球座21配合，以封堵相应的第二内筒6的内通道。
第三步，向油管8中泵送压力液。压力液被阻隔在处于相应级的球座21处。在压力达到第一压力(例如，第一压力为15-25MPa)时，第一剪切销20被剪断，则第二内筒6下移至第一内筒座28处，从而使得喷嘴7露出。并且第四传压孔53与第一传压孔15连通。此时，压力液通过第四传压孔53和第一传压孔15进入到活塞缸13内，并推动活塞14向下运动，使得推杆29作用于胶筒26，从而胶筒26膨胀以实现封隔器4坐封。
第四步，当封隔器4坐封后，向油管8内注入携砂液，携砂液通过喷嘴7的节流作用而高速向外射出，携砂液射穿套管10并进入地层，从而在地层内形成孔洞。
第五步，射孔结束后，向环空11内注入压力液。压力液通过第三传压孔64进入到压力腔63中，当压力达到第二压力值(例如，第二压力值为35-45MPa)时，第四剪切销56被剪断，则第一内筒60下移，从而露出压裂孔9。另外，下移后的第一内筒60封堵了喷嘴7，以避免压力损失。
第六步，向油管8内注入压裂液，压裂液通过压裂孔9进入射孔时形成在地层中的孔洞处，以完成压裂。在此过程中，为了增加排量，提高压裂效果，在向油管8内注入压裂液的同时，还可以向环空11内注入压裂液以进行补液。
在完成相应级的射孔压裂后，重复第二步到第六步(在第二步中，需要向油管8内投入直径较大的球22)，以完成下一级的射孔压裂。从而，通过一趟管柱50可以完成储层的多级射孔和压裂，由此，减少了施工工序，提高了工作效率。
在第二个实施例中，采用开启工具40实现内筒6的内腔的封闭，而不是利用如第一实施例中的投球方式。然而第二实施例中的装置100的其它结构和工作原理与第一实施例的装置100的结构和工作原理大体相同。由此，下面只对开启工具40以及与开启工具40配合的一些结构和作描述。
在一个实施例中，如图2A所示，装置100还包括选择性设置在第二内筒6中并用于封闭第二内筒6的内腔的开启工具40。开启工具40包括开启工具主体41、弹性卡片42、球座21’和球22’。其中开启工具主体41构造为筒状，以用于设置在第二内筒6中。弹性卡片42设置在开启工具主体41的上端。优选地，弹性卡片42可以为多个，并沿着周向分布。球座21’设置在开启工具主体41的下端以用于放置球22’。在弹性卡片42上设置有凸起43。相对应地，在第二内筒6上设置有凹槽44(图1A中示出)以用于与凸起43配合。在将开启工具40投入第二内筒6过程中，当开启工具40遇到与其匹配的第二内筒6后，弹性卡片42向外张开，以使得凸起43与凹槽44配合，从而开启工具40定位于第二内筒6上。在这种情况下，第二内筒6的内部流通通路被堵塞，则此时可以通过注入压力液的方式促动第二内筒6向下移动。通过这种结构的开启工具40与第二内筒6的配合，便能实现第二内筒6的下移，避免了采用投球方式使第二内筒6下移而产生的不能全通径以及级数受限的问题。也就是，通过这种设置实现了管柱50的全通径，进而实现“无数”级压裂施工。
根据本发明第二实施例，如图1A所示，在喷嘴套2的内壁上设置第一内筒座28，以用于限定第二内筒6的下移位置。第一内筒座28可以构造为阶梯台结构。具体地，根据本发明，在从上到下的方向上，于第二内筒6的凹槽44的下端内壁上设置第四台阶45。同时，在第二内筒6的下端内壁上设置限位件47。限位件47构造为筒状并与第二内筒6固定连接，并形成径向向内突出的第五台阶46。相对应地，在凹槽44的下端设置档环48，并且档环48构造为筒状。并且，在档环48的外壁的轴向中间部分上设置径向向外突出的突出环49。此突出环49的下端面抵接在第五台阶46上，以使得档环48的上端面与第四台阶45相对，而档环48的下端面延伸出第二内筒6的下端面。同时，在档环48的上端面与第四台阶45之间设置密封件51。优选地，密封件51可以为胶套。由此，投入开启工具40并使得开启工具40与第二内筒6一起下移，当档环48与第一内筒座28复合后，第二内筒6继续下移，使得密封件51膨胀而提高第二内筒6与开启工具40之间的密封。通过这种设置，可提高第二内筒6与开启工具40之间的密封性，以保证在注入压力液后第二内筒6能够顺利下移。
根据本发明，如图2A所示，在开启工具主体41和球座21’轴向之间设置弹性助推环52。优选地，弹性助推环52可以为胶环。通过设置弹性助推环52减小 了开启工具40与油管8等之间的间隙。由此，在通过加压送入开启工具40的过程中，减小了漏液，以使得开启工具40能更顺利地被送入。
在一个优选的实施例中，装置100还包括设置在封隔器4下端的解封档环23。解封档环23的上端套接在中心杆3的外壁上，下端通过第三剪切销24与下接头5固定连接。同时，解封档环23与中心杆3和下接头5形成第一空间25，以提供避让空间。在需要解封封隔器4的情况下，可以上提上接头1，中心杆3和下接头5具有跟随上接头1向上运动的趋势，由于胶筒26与环空11摩擦式接触，则在拉力作用下第三剪切销24被剪断。在第三剪切销24被剪断后，膨胀的胶筒26推动解封档环23向下运动以解封封隔器4。通过这种设置能提高装置100的作业安全性，以用于在突发情况下将管柱50由套筒10中提出。
下面根据图1A-4A和图5详细论述使用具有装置100的管柱50进行改造地层的方法。
第一步，将包含油管8和装置100但不具有开启工具40的管柱50下入到套管10中，并使得管柱50与套管10之间形成环空11。
第二步，向油管8内投入开启工具40。开启工具40与相应级的第二内筒6配合，以封堵第二内筒6的内通道。
第三步，向油管8中泵送压力液。在压力达到第一压力(例如，第一压力为15-25MPa)时，第一剪切销20被剪断，则第二内筒6与开启工具40下移至第一内筒座28处，从而使得喷嘴7露出。此时，压力液通过第四传压孔53和第一传压孔15进入到活塞缸13内，并推动活塞14向下运动，使得推杆29作用于胶筒26，从而胶筒26膨胀以实现封隔器4坐封。
第四步，当封隔器4坐封后，向油管8内注入携砂液，携砂液通过喷嘴7的节流作用而高速向外射出，携砂液射穿套管10并进入地层，从而在地层内形成孔洞。
第五步，射孔结束后，向环空11内注入压力液。压力液通过第三传压孔64进入到压力腔63中，当压力达到第二压力值(例如，第二压力值为35-45MPa)时，第四剪切销56被剪断，则第一内筒60下移，从而露出压裂孔9。另外，下移后的第一内筒60封堵了喷嘴7，以避免压力损失，保证压裂效果。
第六步，向油管8内注入压裂液，压裂液通过压裂孔9进入射孔时形成在地层中的孔洞处，以完成压裂。在此过程中，为了增加排量，提高压裂效果，在向 油管8内注入压裂液的同时，还可以向环空11内注入压裂液以进行补液。
在完成相应级的射孔压裂后，重复第二步到第六步(在第二步中，需要向油管8内投入与第二内筒6相匹配的另一个开启工具40)，以完成下一级的射孔压裂。从而，通过一趟管柱50可以完成储层的多级射孔和压裂，由此，减少了施工工序，提高了工作效率。
本申请中，所述方位用语“上”和“下”均以装置100下入地层所处的方位为参考。
以上所述仅为本发明的优选实施方式，但本发明保护范围并不局限于此，任何本领域的技术人员在本发明公开的技术范围内，可容易地进行改变或变化，而这种改变或变化都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求书的保护范围为准。

Claims (13)

  1. 一种用于喷封压的装置，其特征在于，包括：
    上接头，所述上接头的外壁上设置连通内外的压裂孔，
    设置在所述上接头的下端的喷嘴套，在所述喷嘴套上设置连通内外的喷嘴，
    设置在所述喷嘴套的下端的中心杆，
    设置在所述喷嘴套和所述中心杆的外壁上的封隔器，所述封隔器具有胶筒组件，
    设置在所述中心杆的下端的下接头，
    设置在所述上接头之内并能与所述上接头滑动式连接的第一内筒，在初始状态下，所述第一内筒封堵所述压裂孔，
    设置在所述喷嘴套之内并能与所述喷嘴套滑动式连接的第二内筒，在初始状态下，所述第二内筒封堵所述喷嘴，
    其中，在所述第二内筒的内腔封闭后，在第一压力作用下，所述第二内筒构造为能相对所述喷嘴套移动而露出所述喷嘴，同时，所述胶筒组件构造为能在压力液作用下变形以使得所述封隔器坐封，在第二压力作用下，所述第一内筒构造为相对于所述上接头移动而露出所述压裂孔。
  2. 根据权利要求1所述的装置，其特征在于，所述封隔器还包括：
    上端套式固定连接在所述喷嘴套的外壁上的外筒，所述外筒的下端延伸过所述中心杆，
    由所述中心杆的上端面、所述外筒的内壁和所述喷嘴套形成的活塞缸，
    上端设置在所述活塞缸内的活塞，所述活塞的下端由所述中心杆与所述外筒之间向下延伸并与所述胶筒组件抵接，所述活塞与所述外筒滑动式连接，
    设置在所述喷嘴套的侧壁上的第一传压孔，所述第一传压孔与所述所述缸连通。
  3. 根据权利要求2所述的装置，其特征在于，在所述第二内筒的壁上设置第四传压孔，所述第四传压孔构造为在所述第二内筒下移后与所述第一传压孔连通。
  4. 根据权利要求3所述的装置，其特征在于，所述第一传压孔包括用于与所述第四传压孔连通的第一部分，以及与所述第一部分和所述活塞缸均连通的第 二部分，其中所述第一部分构造为沿径向延伸的孔，而所述第二部分构造为沿轴向延伸的孔。
  5. 根据权利要求4所述的装置，其特征在于，在所述第一部分的入口处构造有扩孔。
  6. 根据权利要求2所述的装置，其特征在于，在所述中心杆的外壁上设置第一棘齿，在所述活塞的内壁上设置能与所述第一棘齿配合的第二棘齿，
    或/和在所述喷嘴套的内壁上设置第三棘齿，在所述第一内筒的外壁上设置能与所述第三棘齿相配合的第四棘齿。
  7. 根据权利要求2所述的装置，其特征在于，在所述上接头上的内壁上设置第一台阶，在所述第一内筒的外壁上设置第二台阶，所述第二台阶与所述第一台阶相对式设置并由所述上接头和所述第一内筒形成压力腔，并在所述上接头上设置连通所述压力腔的第三传压孔。
  8. 根据权利要求1所述的装置，其特征在于，所述第二内筒的内壁上构造有球座，在向所述第二内筒中投球时，所述球座构造为能与所述球配合以封闭所述第二内筒的内腔。
  9. 根据权利要求1所述的装置，其特征在于，还包括选择性设置在所述第二内筒中并用于封闭所述第二内筒的内腔的开启工具，所述开启工具包括：
    开启工具主体，
    由所述开启工具主体向上延伸的弹性卡片，
    设置在所述开启工具主体下端的球座，
    与所述球座配合的球，
    其中，所述弹性卡片上设置有凸起部以与设置在所述第二内筒的内壁上的凹槽相配合。
  10. 根据权利要求9所述的装置，其特征在于，在所述第二内筒的凹槽的下端设置档环，所述档环构造为能相对于所述第二内筒轴向滑动，并且在所述档环的上端面和第二内筒之间设置密封件以使得所述档环在相对于所述第二内筒向上移动过程中压缩所述密封件。
  11. 根据权利要求9所述的装置，其特征在于，在所述开启工具主体和所述球座之间设置弹性助推环。
  12. 根据权利要求1所述的装置，其特征在于，还包括设置在所述封隔器下 端的解封档环，所述解封档环的上端套接在所述中心杆的外壁上，下端通过第三剪切销与所述下接头固定连接，所述解封档环与所述中心杆和所述下接头形成用于所述解封档环和所述下接头相对移动的第一空间。
  13. 一种管柱，其特征在于，包括根据权利要求1到12中任一项所述的装置。
PCT/CN2017/071167 2016-01-20 2017-01-13 用于喷封压的装置以及包含其的管柱 WO2017124979A1 (zh)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US16/071,143 US11236590B2 (en) 2016-01-20 2017-01-13 Device for jet packing and fracturing and tubular column comprising same
CA3010268A CA3010268C (en) 2016-01-20 2017-01-13 Device for perforating, packing and fracturing and tubing string comprising the device
AU2017209220A AU2017209220B2 (en) 2016-01-20 2017-01-13 Device for jet packing and fracturing and tubular column comprising same
BR112018014648-0A BR112018014648B1 (pt) 2016-01-20 2017-01-13 Dispositivo para perfuração, obturação e fraturamento e coluna de produção compreendendo o dispositivo
MX2018008631A MX2018008631A (es) 2016-01-20 2017-01-13 Dispositivo para perforar, embalar y fracturar y una sarta de tuberia comprendiendo el dispositivo.
ZA2018/05528A ZA201805528B (en) 2016-01-20 2018-08-17 Device for jet packing and fracturing and tubular column comprising same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201610037080.7A CN105672957B (zh) 2016-01-20 2016-01-20 用于多向压力控制式喷封压的工具以及包含其的管柱
CN201610037080.7 2016-01-20
CN201610037471.9 2016-01-20
CN201610037471.9A CN105696984B (zh) 2016-01-20 2016-01-20 用于多向压力控制式喷封压的工具以及包含其的管柱

Publications (1)

Publication Number Publication Date
WO2017124979A1 true WO2017124979A1 (zh) 2017-07-27

Family

ID=59361366

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/071167 WO2017124979A1 (zh) 2016-01-20 2017-01-13 用于喷封压的装置以及包含其的管柱

Country Status (6)

Country Link
US (1) US11236590B2 (zh)
AU (1) AU2017209220B2 (zh)
BR (1) BR112018014648B1 (zh)
CA (1) CA3010268C (zh)
MX (1) MX2018008631A (zh)
WO (1) WO2017124979A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114278262B (zh) * 2021-12-07 2023-10-20 常州大学 一种页岩油开采施工用分级式水力压裂装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979823A (zh) * 2010-10-14 2011-02-23 中国石油天然气股份有限公司 水力喷射射孔压裂气举排液一体化工艺管柱
CN103742099A (zh) * 2013-09-13 2014-04-23 中国石油集团西部钻探工程有限公司 射孔压裂封隔装置
CN204024622U (zh) * 2014-09-01 2014-12-17 中国石油集团渤海钻探工程有限公司 水平井固井用可开关压裂滑套
US20150007994A1 (en) * 2013-07-04 2015-01-08 Charles E. Lancaster Open Hole Casing Run Perforating Tool
CN204098878U (zh) * 2014-07-28 2015-01-14 中国石油化工股份有限公司 一种磨料射孔喷砂压裂联作器
WO2015117224A1 (en) * 2014-02-04 2015-08-13 Rapid Design Group Inc. Pressure activated completion and testing tools and methods of use
CN105672957A (zh) * 2016-01-20 2016-06-15 中国石油化工股份有限公司 用于多向压力控制式喷封压的工具以及包含其的管柱
CN105696984A (zh) * 2016-01-20 2016-06-22 中国石油化工股份有限公司 用于多向压力控制式喷封压的工具以及包含其的管柱
CN106321030A (zh) * 2015-07-02 2017-01-11 中国石油化工股份有限公司 用于射孔及加砂压裂的联作装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7343975B2 (en) * 2005-09-06 2008-03-18 Halliburton Energy Services, Inc. Method for stimulating a well
US20130248192A1 (en) * 2012-03-22 2013-09-26 Canadian Fracturing Ltd. Multizone and zone-by-zone abrasive jetting tools and methods for fracturing subterranean formations

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979823A (zh) * 2010-10-14 2011-02-23 中国石油天然气股份有限公司 水力喷射射孔压裂气举排液一体化工艺管柱
US20150007994A1 (en) * 2013-07-04 2015-01-08 Charles E. Lancaster Open Hole Casing Run Perforating Tool
CN103742099A (zh) * 2013-09-13 2014-04-23 中国石油集团西部钻探工程有限公司 射孔压裂封隔装置
WO2015117224A1 (en) * 2014-02-04 2015-08-13 Rapid Design Group Inc. Pressure activated completion and testing tools and methods of use
CN204098878U (zh) * 2014-07-28 2015-01-14 中国石油化工股份有限公司 一种磨料射孔喷砂压裂联作器
CN204024622U (zh) * 2014-09-01 2014-12-17 中国石油集团渤海钻探工程有限公司 水平井固井用可开关压裂滑套
CN106321030A (zh) * 2015-07-02 2017-01-11 中国石油化工股份有限公司 用于射孔及加砂压裂的联作装置
CN105672957A (zh) * 2016-01-20 2016-06-15 中国石油化工股份有限公司 用于多向压力控制式喷封压的工具以及包含其的管柱
CN105696984A (zh) * 2016-01-20 2016-06-22 中国石油化工股份有限公司 用于多向压力控制式喷封压的工具以及包含其的管柱

Also Published As

Publication number Publication date
CA3010268C (en) 2023-10-31
AU2017209220A1 (en) 2018-07-19
BR112018014648B1 (pt) 2022-10-25
BR112018014648A2 (pt) 2018-12-11
US20210189844A1 (en) 2021-06-24
CA3010268A1 (en) 2017-07-27
US11236590B2 (en) 2022-02-01
MX2018008631A (es) 2019-01-10
AU2017209220B2 (en) 2022-03-17

Similar Documents

Publication Publication Date Title
CN108166965B (zh) 一种喷砂射孔、压裂及封隔一体化装置
CN108386157A (zh) 一种活塞压力开启式滑套开关及水力压裂施工方法
CN105822278A (zh) 一种等通径分段压裂装置及方法
CN103573239A (zh) 分段压裂装置以及该装置的使用方法
CN115324550A (zh) 一种液压型连续油管拖动压裂工具及工艺方法
CN110043237B (zh) 投堵式滑套喷砂器及其控制方法
CN105696994B (zh) 用于多向压力控制式喷封压的装置以及包含其的管柱
WO2017124979A1 (zh) 用于喷封压的装置以及包含其的管柱
CN111691853B (zh) 一种高压蓄能延时开启式趾端滑套及使用方法
CN105672958B (zh) 用于喷封压的工具以及包含其的管柱
CN105672956B (zh) 用于喷封压的装置以及包含其的管柱
WO2017124980A1 (zh) 用于喷封压的工具以及包含其的管柱
CN105696995B (zh) 用于压力级差式喷封压的工具以及包含其的管柱
CN105672959B (zh) 用于压力级差式喷封压的装置以及包含其的管柱
CN105672957B (zh) 用于多向压力控制式喷封压的工具以及包含其的管柱
CN105089554A (zh) 油田水平井带压拖动压裂改造作业阀和反洗井解卡方法
CN114645687B (zh) 一种复合坐封方式的防喷器
CN105696993B (zh) 用于压力级差式喷封压的工具以及包含其的管柱
CN105696983B (zh) 用于喷封压的工具以及包含其的管柱
CN210859161U (zh) 泵下油管液控防喷装置
CN105696984B (zh) 用于多向压力控制式喷封压的工具以及包含其的管柱
CN105672955B (zh) 用于喷封压的装置以及包含其的管柱
CN204804769U (zh) 油田水平井带压拖动压裂改造作业阀
CN117759213A (zh) 一种压裂短节及方法和管柱
CN114893150A (zh) 桥塞液压坐封注灰一体工具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17741010

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 3010268

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: MX/A/2018/008631

Country of ref document: MX

ENP Entry into the national phase

Ref document number: 2017209220

Country of ref document: AU

Date of ref document: 20170113

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112018014648

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112018014648

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20180718

122 Ep: pct application non-entry in european phase

Ref document number: 17741010

Country of ref document: EP

Kind code of ref document: A1