WO2022247043A1 - 一种水力造斜定向钻进装置与方法 - Google Patents
一种水力造斜定向钻进装置与方法 Download PDFInfo
- Publication number
- WO2022247043A1 WO2022247043A1 PCT/CN2021/116176 CN2021116176W WO2022247043A1 WO 2022247043 A1 WO2022247043 A1 WO 2022247043A1 CN 2021116176 W CN2021116176 W CN 2021116176W WO 2022247043 A1 WO2022247043 A1 WO 2022247043A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- jet nozzle
- water jet
- hydraulic
- directional
- rod
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 216
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 200
- 238000002347 injection Methods 0.000 claims abstract description 78
- 239000007924 injection Substances 0.000 claims abstract description 78
- 239000003245 coal Substances 0.000 claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 claims description 59
- 239000010959 steel Substances 0.000 claims description 59
- 238000007789 sealing Methods 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 238000010586 diagram Methods 0.000 description 13
- 210000003128 head Anatomy 0.000 description 10
- 230000035699 permeability Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229920002457 flexible plastic Polymers 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
Definitions
- the invention relates to the technical field of coal mine gas disaster prevention and control, in particular to a hydraulic deflection directional drilling device and method.
- the invention belongs to the technical field of coal mine gas disaster prevention and control, and in particular relates to a radial rotary device and a method for drilling a small radius by hydraulic jet drilling in a coal seam.
- Coalbed methane is one of the important unconventional natural gas resources.
- the coalbed methane is extracted from the high gassy coal seam underground in coal mines, whether the coalbed methane extraction from the unstressed coal seam can achieve better results depends mainly on the permeability of the coal seam.
- most of the coal seams in China's mining areas are high-gas and low-permeability coal seams.
- the coal is soft and has poor permeability, and the permeability is only 10 -4 ⁇ 10 -3 mD.
- the permeability of coal seams directly determines the efficiency of coal mine gas extraction and utilization.
- the object of the present invention is to provide a hydraulic deflection directional drilling device and method.
- the invention is mainly used for hydraulic deflection and directional drilling in underground coal seams. Compared with radial rotary hydraulic jet drilling technology, it has the advantages of large radius of gyration, small propulsion resistance, simple process and low cost. Compared with the horizontal well directional drilling technology, it has the advantages of small radius of gyration, simple process and low cost.
- the present invention provides the following technical solutions:
- a hydraulic deflection directional drilling device includes a hydraulic deflection directional drilling tool, an elastic drill rod, a push assembly and a high-pressure water injection pump; the elastic drill rod is screwed to the hydraulic deflection directional drilling Deviated directional drilling tools include water jet nozzles and deflection auxiliary components;
- the pushing component is connected with the elastic drill pipe, and the pushing component is a rod type pushing component or a hydraulic pushing component; Inject water.
- the water jet nozzle includes a first water jet nozzle body, and the first water jet nozzle body has an inclined structure from the bottom to the head;
- the deflection auxiliary assembly includes a directional guide body, and an directional connection section, a first water guide section and a first elastic drill pipe connection section are sequentially arranged inside the directional guide body from top to bottom; the directional guide body passes through the The directional connecting section is threadedly connected with the first water jet nozzle body, and is threadedly connected with the elastic drill pipe through the first elastic drill pipe connecting section, and the first water jet nozzle body is guided by the directional guide body and the elastic drill pipe. Pass;
- the push assembly is a rod-type push assembly, including a seal push rod and a drilling rig.
- the seal push rod is threaded with multiple connected elastic drill rods.
- the high-pressure seal push rod is clamped and controlled by the drill rig, and the high-pressure seal push rod passes through the high-pressure rubber hose. Connect with high pressure water injection pump.
- the water jet nozzle includes a second water jet nozzle body, the second water jet nozzle body is in a vertical structure from the bottom to the head, and the left and right sides of the middle section of the second water jet nozzle body are opposite to each other.
- the position is provided with a first pilot injection hole and a second pilot injection hole, and the diameter of the second pilot injection hole is larger than that of the first pilot injection hole;
- the deflection auxiliary assembly includes a first water-guiding flexible pipe, and a first nozzle connecting section, a second water-guiding section and a second elastic drill pipe connecting section are sequentially arranged inside the first water-guiding flexible pipe from top to bottom;
- the first water-conducting flexible pipe is threadedly connected with the second water jet nozzle body through the first nozzle connection section, and is threaded with the elastic drill pipe through the second elastic drill pipe connection section, and the water jet nozzle body is Through the first water-guiding flexible pipe and the elastic drill pipe; the diameter of the second guide injection hole is larger than that of the first guide injection hole.
- the push assembly is a rod-type push assembly, including a seal push rod and a drilling rig.
- the seal push rod is threaded with multiple connected elastic drill rods.
- the high-pressure seal push rod is clamped and controlled by the drill rig, and the high-pressure seal push rod passes through the high-pressure rubber hose. Connect with high pressure water injection pump.
- the water jet nozzle includes a fifth water jet nozzle body, the fifth water jet nozzle body is in a vertical structure from the bottom to the head; the fifth water jet nozzle body is connected to the elastic drill rod through threads ;
- the deflection auxiliary component includes a steel wire fixing ring, a steel wire and a steel wire traction winch; the steel wire is seized and fixedly connected with the front end of the elastic drill pipe through the steel wire fixing ring, the end of the steel wire is wound on the steel wire traction winch, and the steel wire traction winch is fixed outside the borehole,
- the traction steel wire controls the deflection of the elastic drill pipe, so that the water jet nozzle produces a drilling deflection;
- the push assembly is a rod-type push assembly, including a seal push rod and a drilling rig.
- the seal push rod is threaded with multiple connected elastic drill rods.
- the high-pressure seal push rod is clamped and controlled by the drill rig, and the high-pressure seal push rod passes through the high-pressure rubber hose. Connect with high pressure water injection pump.
- the water jet nozzle includes a sixth water jet nozzle body, and the bottom to the head of the sixth water jet nozzle body is a vertical structure;
- the auxiliary building assembly includes an auxiliary building body, an exit window, a guide slope and a whole-body push rod, and the sixth water jet nozzle body is threadedly connected with the elastic drill pipe; the auxiliary building body is in a tubular shape, and the The side wall of the auxiliary bevel is provided with an exit window for the extension of the sixth water jet nozzle body, and a guide slope is arranged on the inner wall of the auxiliary bevel, one end of the guide is welded and fixed to the upper edge of the auxiliary bevel, and the other end is connected to The inner wall of the auxiliary ramping body is welded and fixed, and the angle between the auxiliary ramping body and the axial direction is ⁇ .
- the bottom end of the auxiliary ramping body is screwed with a plurality of whole-body push rods, and the whole body push rods are tubular in shape. Arranged in the borehole, it provides a guiding slope for the sixth water jet nozzle body and the elastic drill rod. After the multiple elastic drill rods drive the sixth water jet nozzle body to push it to the guiding slope, it bends, and the drill exits from the exit window along the guiding slope. Enter;
- the push assembly is a rod-type push assembly, including a seal push rod and a drilling rig.
- the seal push rod is threaded with multiple connected elastic drill rods.
- the high-pressure seal push rod is clamped and controlled by the drill rig. Water injection pump connection.
- the water jet nozzle includes a seventh water jet nozzle body, and the bottom to the head of the seventh water jet nozzle body is a vertical structure;
- the auxiliary building assembly includes an auxiliary building body, an exit window, a guiding slope and a whole-body push rod, and the seventh water jet nozzle body is threadedly connected with the elastic drill pipe;
- the auxiliary building body is in a tubular shape, and the
- the side wall of the auxiliary bevel is provided with an exit window for the extension of the seventh water jet nozzle body, and a guide slope is arranged on the inner wall of the auxiliary bevel, one end of the guide is welded and fixed to the upper edge of the auxiliary bevel, and the other end is connected to
- the inner wall of the auxiliary ramp is welded and fixed, and the angle between the auxiliary ramp and the axial angle is ⁇ , and the bottom end of the auxiliary ramp is threadedly connected with a plurality of whole body push rods, and the whole body push rods are in the shape of a whole body tube;
- the pushing component is a hydraulic pushing component, including a second piston, a piston rod, a piston rod water guide eyelet, a steel wire rope, a sealed bearing, a sealing rubber ring, a liquid injection joint, a wire rope winch, a limit slope, and a bearing; wherein the second piston Installed on the piston rod, one end of the piston rod is threadedly connected to the elastic drill rod, and the other end is connected to the steel wire rope through a bearing for relative rotation, and the outer wall of the piston rod is provided with a piston rod water guiding flower eye.
- the two pistons can seal and slide along the push rod of the whole body and the inner wall of the auxiliary bevelling body, and a limited bevel is welded and fixed on the inner wall of the auxiliary bevelling body port, which is used for the second piston limit and plays the role of blocking coal gangue; one end of the liquid injection joint is connected to the whole body
- the thread of the push rod is connected to each other, and the other end is connected to the thread of the sealed bearing;
- the sealed bearing is provided with a sealing rubber ring, and the steel wire rope passes through the inner hole of the sealing rubber ring and slides along the sealed bearing, and is fixed and pulled by the wire rope winch.
- the steel wire rope includes a steel wire rope body and a sealing compound coated on the outside of the steel wire rope body.
- a hydraulic deflection directional drilling method which specifically includes the following steps:
- Step 1 After the construction drilling to the inside of the coal seam is completed, use the push assembly and the elastic drill rod to send the water jet nozzle of the hydraulic deflection directional drilling tool to the designed deflection drilling position in the borehole;
- Step 2 Connect the rod-type push assembly or the hydraulic push assembly to the high-pressure water injection pump through the high-pressure rubber hose, turn on the high-pressure water injection pump, and the high-pressure water flows through the elastic drill pipe to the water jet nozzle of the hydraulic deflection directional drilling tool for hydraulic deflection directional breaking Coal, producing directional hydrojet holes whose centerlines are not in the same direction as the borehole centerlines;
- Step 3 Use the pushing component to continue pushing, the elastic drill pipe is deflected by force, and drives the hydraulic deflection directional drilling tool to gradually drill in a directional direction along the directional hydraulic injection hole, forming a hydraulic deflection directional drilling hole;
- Step 4 Use the push assembly to retract the elastic drill pipe and the hydraulic deflection directional drilling tool to the borehole;
- Step 5 Use the push component to drive the elastic drill pipe and the hydraulic deflection directional drilling tool to rotate or move to another designed directional jet drilling direction, repeat steps 3-4, and complete the multi-cluster hydraulic deflection directional jet drilling.
- the beneficial effects of the present invention are as follows: the present invention uses the hydraulic deflection directional drilling tool to replace the traditional small-radius rotary control device, and pushes through the elastic drill rod to gradually rotate along the coal body to form a hydraulic deflection Directional drilling; the size of the water jet nozzle and the elastic drill pipe are not limited by the size of the small-radius slewing control device, which provides a larger gyration radius for the rotation of the hydraulic deflection directional drilling tool and the elastic drill pipe, compared with the use of small-radius slewing control
- the radial rotary hydraulic jet drilling technology of the device has the advantages of large radius of gyration, small propulsion resistance, large size and high performance of water jet nozzle and elastic drill pipe, simple pushing and drilling process, and low cost. Compared with the directional drilling technology that combines screw drilling tools and conventional hard drill pipes, it has the advantages of small turning radius along the coal body, simple process and low cost, and is suitable for multi-branch directional drilling in small
- Fig. 1 is a structural schematic diagram of a hydraulic deflection directional drilling device of the present invention; it is also a structural schematic diagram of Embodiment 1 of the present invention
- Fig. 2 is a schematic diagram of the installation structure of the water jet nozzle and the deflection auxiliary assembly according to Embodiment 1 of the present invention
- Fig. 3 is a schematic diagram of the installation structure of the water jet nozzle and the deflection auxiliary assembly according to the second embodiment of the present invention
- Fig. 4 is a schematic diagram of the drilling method of the deflection-building directional drilling device in Embodiment 1 to Embodiment 2;
- Fig. 5 is a schematic diagram of the installation structure of the water jet nozzle and the deflection auxiliary assembly according to the third embodiment of the present invention.
- Fig. 6 is a schematic diagram of a deflecting directional drilling device and a drilling method thereof according to Embodiment 3 of the present invention.
- Fig. 7 is a schematic diagram of a deflecting directional drilling device and a drilling method thereof according to Embodiment 4 of the present invention.
- FIG. 8 is a schematic structural view of a water jet nozzle and an elastic drill pipe according to Embodiment 4 of the present invention.
- Fig. 9 is the a-a direction sectional view of Fig. 8.
- Fig. 10 is a schematic structural diagram of a ramping auxiliary assembly according to Embodiment 4 of the present invention.
- Fig. 11 is a schematic diagram of a deflecting directional drilling device and a drilling method thereof according to Embodiment 5 of the present invention.
- Fig. 12 is a schematic diagram of hydraulic fracturing for hydraulic deflection and directional drilling into a coal seam section
- Fig. 13 is a schematic diagram of the first structure of the elastic drill rod in the specific embodiment of the present invention.
- Fig. 14 is a sectional view along the line A-A of Fig. 13;
- Fig. 15 is a second structural schematic diagram of an elastic drill rod in a specific embodiment of the present invention.
- Fig. 16 is a sectional view along b-b direction of Fig. 15;
- Push component 31. Sealed push rod; 32. Drilling rig;
- the first water guiding flexible pipe 12021, the first nozzle connecting section; 12022, the second water guiding section; 12023, the second elastic drill pipe connecting section;
- a kind of hydraulic deflection directional drilling device comprises hydraulic deflection directional drilling tool 1, elastic drill pipe 2, pushing assembly 3 and high-pressure water injection pump 5; Described elastic drill pipe 2 and The hydraulic deflection directional drilling tool 1 is threaded, and the hydraulic deflection directional drilling tool 1 includes a water jet nozzle 11 and a deflection auxiliary component 12;
- the push assembly 3 is connected with the elastic drill rod 2, and the push assembly 3 is a rod-type push assembly or a hydraulic push assembly; the push assembly 3 is also connected with the high-pressure water injection pump 5 through a high-pressure rubber hose, and the high-pressure water injection pump 5 The hydraulic deflection directional drilling tool 1 is injected with water.
- the water jet nozzle 11 includes a first water jet nozzle body 1101, and the first water jet nozzle body 1101 has an inclined structure from the bottom to the head;
- the deflection auxiliary assembly 12 includes a directional guide body 1201, inside the directional guide body 1201, an directional connecting section 12011, a first water guiding section 12012 and a first elastic drill pipe connecting section 12013 are sequentially arranged inside the directional guiding body 1201;
- the directional guide body 1201 is threadedly connected to the first water jet nozzle body 1101 through the directional connecting section 12011, and is threadedly connected to the elastic drill pipe 2 through the first elastic drill pipe connecting section 12013.
- the first water jet The nozzle body 1101 communicates with the elastic drill pipe 2 through the directional guide body 1201;
- the pushing assembly 3 is a rod-type pushing assembly, including a sealing pushing rod 31 and a drilling rig 32, the sealing pushing rod 31 is threadedly connected with a plurality of connected elastic drilling rods 2, and the high-pressure sealing pushing rod 31 is clamped and controlled by the drilling rig 32, The high-pressure sealing push rod 31 is connected with the high-pressure water injection pump 5 through a high-pressure rubber hose.
- the water jet nozzle 11 includes a second water jet nozzle body 1102, the bottom of the second water jet nozzle body 1102 is a vertical structure, and the middle section of the second water jet nozzle body 1102 is on the left side. 1.
- a first pilot injection hole 11021 and a second pilot injection hole 11022 are provided at opposite positions on the right sides, and the diameter of the second pilot injection hole 11022 is larger than that of the first pilot injection hole 11021;
- the deflection auxiliary assembly 12 includes a first water guiding flexible pipe 1202, inside the first water guiding flexible pipe 1202 there are sequentially arranged a first nozzle connecting section 12021, a second water guiding section 12022 and a second elastic drill Rod connecting section 12023; the first water guiding flexible pipe 1202 is threadedly connected with the second water jet nozzle body 1102 through the first nozzle connecting section 12021, and connected with the elastic drill pipe through the second elastic drill pipe connecting section 12023 2 are threaded, the water jet nozzle body 21 is connected to the elastic drill pipe 2 through the first water guiding flexible pipe 1202; the diameter of the second guiding injection hole 11022 is larger than that of the first guiding injection hole 11021, when the water jet is drilling, The second water jet nozzle body 1102 generates a lateral force F, which acts on the first water guiding flexible pipe 1202, thereby realizing the orientation of the drilling tool;
- the pushing assembly 3 is a rod-type pushing assembly, including a sealing pushing rod 31 and a drilling rig 32, the sealing pushing rod 31 is threadedly connected with a plurality of connected elastic drilling rods 2, and the high-pressure sealing pushing rod 31 is clamped and controlled by the drilling rig 32, The high-pressure sealing push rod 31 is connected with the high-pressure water injection pump 5 through a high-pressure rubber hose.
- the water jet nozzle 11 includes a fifth water jet nozzle body 1105, the fifth water jet nozzle body 1105 is a vertical structure from the bottom to the head; the fifth water jet nozzle body 1105 and the fifth water jet nozzle body 1105
- the elastic drill pipe 2 is connected by threads;
- the deflection auxiliary component 12 includes a steel wire fixing ring 12117, a steel wire 12118 and a steel wire traction winch 12119; the steel wire 12118 is seized and fixedly connected with the front end of the elastic drill pipe 2 through the steel wire fixing ring 12117, and the end of the steel wire 12118 is wound on the steel wire traction winch 12119, and the steel wire
- the traction winch 12119 is fixed outside the borehole, and the deflection of the elastic drill pipe 2 is controlled by the traction steel wire 12118, so that the water jet nozzle 11 produces a drilling deflection angle;
- the pushing assembly 3 is a rod-type pushing assembly, including a sealing pushing rod 31 and a drilling rig 32, the sealing pushing rod 31 is threadedly connected with a plurality of connected elastic drilling rods 2, and the high-pressure sealing pushing rod 31 is clamped and controlled by the drilling rig 32, The high-pressure sealing push rod 31 is connected with the high-pressure water injection pump 5 through a high-pressure rubber hose.
- the water jet nozzle 11 includes a sixth water jet nozzle body 1106, and the bottom to the head of the sixth water jet nozzle body 1106 is a vertical structure;
- the auxiliary building assembly 12 includes an auxiliary building body 12120, an exit window 12121, a guide inclined surface 12122 and a whole-body push rod 12123, and the sixth water jet nozzle body 1106 is screwed to the elastic drill pipe 2;
- the auxiliary building body 12120 is tubular in shape, and an exit window 12121 for the sixth water jet nozzle body 1106 to protrude is provided on the side wall of the auxiliary slanting body 12120, and a guiding inclined surface 12122 is provided on the inner wall of the auxiliary slanting body 12120, and the guiding inclined surface
- One end of 12122 is welded and fixed to the upper edge of the auxiliary bevel 12120, and the other end is welded and fixed to the inner wall of the auxiliary bevel 12120.
- the whole body push rod 12123 is threadedly connected, and the whole body push rod 12123 is in the shape of a whole body tube.
- the auxiliary deflection auxiliary component 12 is arranged in the borehole to provide a guiding slope for the sixth water jet nozzle body 1106 and the elastic drill pipe 2.
- An elastic drill pipe 2 drives the sixth water jet nozzle body 1106 to push to the guide slope 12122, bends, and drills through the exit window 12121 along the guide slope 12122;
- the push assembly 3 is a rod-type push assembly, including a seal push rod 31 and a drilling rig 32.
- the seal push rod 31 is threaded with a plurality of connected elastic drill rods 2.
- the high-pressure seal push rod 31 is clamped and controlled by the drill rig 32, and the high-pressure seal
- the push rod 31 is connected with the high-pressure water injection pump 5 through a high-pressure rubber hose.
- the water jet nozzle 11 includes a seventh water jet nozzle body 1107, and the bottom to the head of the seventh water jet nozzle body 1107 is a vertical structure;
- the auxiliary building assembly 12 includes an auxiliary building body 12120, an exit window 12121, a guiding slope 12122 and a whole body push rod 12123, the seventh water jet nozzle body 1107 is screwed to the elastic drill pipe 2; the auxiliary building body 12120 is tubular in shape, and an exit window 12121 for the extension of the seventh water jet nozzle body 1107 is provided on the side wall of the auxiliary slanting body 12120, and a guiding inclined surface 12122 is provided on the inner wall of the auxiliary slanting body 12120, and the guiding inclined surface
- One end of 12122 is welded and fixed to the upper edge of the auxiliary bevel 12120, and the other end is welded and fixed to the inner wall of the auxiliary bevel 12120.
- the whole body push rod 12123 is threadedly connected, and the whole body push rod 12123 is in the shape of a whole body tube;
- the push assembly 3 is a hydraulic push assembly, including a second piston 301, a piston rod 302, a piston rod water guiding eye 303, a steel wire rope 304, a sealed bearing 305, a sealing rubber ring 306, a liquid injection joint 307, a wire rope winch 308, a limiter Inclined surface 309, bearing 310; wherein the second piston 301 is mounted on the piston rod 302, one end of the piston rod 302 is connected to the elastic drill rod 2 through thread conduction, and the other end is relatively rotatably connected with the steel wire rope 304 through the bearing 310 , and on the outer wall of the piston rod 302, there is a piston rod water-guiding eye 303, the second piston 301 can seal and slide along the whole body push rod 12123 and the inner wall of the auxiliary beveling body 12120, and weld and fix the limiting inclined surface on the inner wall of the auxiliary beveling body 12120 port 309, used to limit the position of the second piston 301, and play a role in
- the steel wire rope 304 includes a steel wire rope body 3041 and a sealant 3042 coated on the outside of the steel wire rope body 3041 .
- a hydraulic deflection directional drilling method is provided by using the hydraulic deflection directional drilling device of the first to fifth embodiments, which specifically includes the following steps:
- Step 1 After the construction drilling to the inside of the coal seam is completed, use the push assembly 3 and the elastic drill pipe 2 to send the water jet nozzle of the hydraulic deflection directional drilling tool 1 to the designed deflection drilling position;
- Step 2 Connect the rod-type push assembly or the hydraulic push assembly to the high-pressure water injection pump 5 through the high-pressure rubber hose, turn on the high-pressure water injection pump 5, and the high-pressure water flows through the elastic drill pipe 2 to the water jet nozzle 11 of the hydraulic deflection directional drilling tool 1 to carry out Hydraulic deflection and directional coal breaking, producing directional hydraulic injection holes whose centerline is different from that of the drilling centerline;
- Step 3 Continue to push with the push assembly 3, the elastic drill pipe 2 is deflected under force, and drives the hydraulic deflection directional drilling tool 1 to gradually drill in a directional manner along the directional hydraulic injection hole, forming a hydraulic deflection directional drilling hole;
- Step 4 Use the push assembly 3 to retract the elastic drill pipe 2 and the hydraulic deflection directional drilling tool 1 to the borehole 6;
- Step 5 Use the push assembly to drive the elastic drill pipe 2 and the hydraulic deflection directional drilling tool 1 to rotate or move to another designed directional jet drilling direction, and repeat steps 3-4 to complete multi-cluster hydraulic deflection directional jet drilling.
- the first structure of the elastic drill rod 2 of the present invention is specifically: the elastic drill rod 2 includes a flexible inner tube 201 and an elastic outer rod 202, and at least An elastic outer rod 202, the front and rear ends of the flexible inner tube 201 are respectively provided with a front connector 205 and a tail connector 206; outside the flexible inner tube 201, the plurality of buckles 204 are set and fixed on the outside of the flexible inner tube 201, the buckles 204 are provided with a plurality of through holes for the elastic outer rod 202 to pass through, the elastic
- the outer rod 202 can slide axially relative to the buckle 204 in the through hole; the front end of the elastic outer rod 202 is fixedly connected to the front end of the flexible inner tube 201 through the first front end buckle 203 .
- the elastic outer rod 202 is made of spring steel or nickel-titanium alloy.
- the flexible inner tube 201 can be a glue tube.
- the second structure of the elastic drill rod 2 of the present invention is specifically: the elastic drill rod 2 includes a flexible inner tube 201 and an elastic outer rod 202, and at least An elastic outer rod 202, the front and rear ends of the flexible inner tube 201 are respectively provided with a front end connector 205 and a tail end connector 206; the at least one elastic outer rod 202 and the front end of the flexible inner tube 201 pass through the first
- the two front-end buckles 207 are fixed, and the tail end is fixed by the tail-end buckle 208.
- the elastic outer rod 202 and the flexible inner tube 201 are fixed by a flexible fixing body 209.
- the flexible fixing body 209 is colloid, water-wrapped cloth or flexible plastic.
- the water-wrapped cloth and the flexible plastic fix the elastic outer rod 202 and the flexible inner tube 201 by winding, and the colloid fixes the elastic outer rod 202 and the flexible inner tube 201 by bonding.
- the elastic outer rod 202 is a solid cylinder or a hollow cylindrical tube or a strong spring tube.
- the elastic drill pipe 2 of the present invention can also be replaced by continuous oil pipe, flexible drill pipe, polyethylene pipe or high-pressure rubber hose.
- the elastic drill rods in all the embodiments of the present invention are made of single or multiple elastic drill rods connected by head and tail threads (the number is selected according to needs).
- the water jet nozzle 11 of the present invention is a self-propelled self-rotating jet nozzle or a self-rotating jet nozzle or a multi-hole jet nozzle.
- the size of the hole produced by the water jet nozzle 11 jet breaking coal is larger than the maximum outer diameter of the water jet nozzle 11 and larger than the elastic drill pipe. 2 outer diameters. All the water jet nozzles 11 in this embodiment are provided with a plurality of front jet injection openings and a plurality of rear jet injection openings.
- the hydraulic deflection directional drilling method is specifically:
- Step 11 After the construction drilling to the inside of the coal seam is completed, connect the water jet nozzle 11 of the hydraulic deflection directional drilling tool, the deflection auxiliary component 12, and the elastic drill pipe 2 in sequence, and use the push component 3 (rod type push component) to push the hydraulic
- the deflecting directional drilling tool 1 is sent to the designed deflecting drilling position in the borehole 6;
- Step 21 Connect the sealed push rod 31 to the high-pressure water injection pump 5 through the high-pressure rubber hose, turn on the high-pressure water injection pump 5, and the high-pressure water flows through the sealed push rod 31, the elastic drill pipe 2 to the hydraulic deflection directional drilling tool 1 for hydraulic deflection orientation Breaking coal, producing directional hydraulic injection holes whose centerline is different from that of the drilling centerline;
- Step 31 Use the drilling rig 32 to push the sealed push rod 31, the elastic drill rod 2 deflects under the thrust of the sealed push rod 31 and the reaction force of the coal wall, and drives the hydraulic deflection directional drilling tool 1 to gradually directional drill along the directional hydraulic injection hole Advance to form hydraulic deflection directional drilling hole 7;
- Step 41 Use the drilling machine 32 to retract the sealing push rod 31, and then complete the retraction of the elastic drill pipe 2 and the hydraulic deflection directional drilling tool 1 to the bottom of the borehole 6;
- Step 52 Use the drilling rig 32 to drive the sealing push rod 31 and the elastic drill pipe 2, and then drive the hydraulic deflection directional drilling tool 1 to rotate to another designed directional jet drilling direction, and repeat steps 31-41 to complete multi-cluster hydraulic deflection directional jetting drilled into.
- the hydraulic deflection directional drilling method using the hydraulic deflection directional drilling device of the third embodiment is specifically:
- Step 13 After the construction drilling to the inside of the coal seam is completed, the hydraulic deflection directional drilling tool 1, the elastic drill pipe 2, and the sealing push rod 31 are connected in sequence, and the drilling machine 32 is used to pass one or more sequentially connected sealing push rods 31, and the The hydraulic deflection directional drilling tool 1 is sent to the bottom of the borehole;
- Step 23 Use the steel wire traction winch 12119 to pull back the steel wire 12118 a small amount.
- the elastic drill pipe 2 produces a small amount of deflection, and connect the seal push rod 31 to the high-pressure water injection pump 5 through the high-pressure rubber hose , turn on the high-pressure water injection pump 5, the high-pressure water flows through the sealing push rod 31, the elastic drill pipe 2 to the hydraulic deflection directional drilling tool 1 to perform hydraulic deflection directional coal breaking, and generate a directional hydraulic injection hole whose centerline is different from the borehole centerline ;
- Step 33 Stop pulling the steel wire 12118 by the steel wire traction winch 12119.
- the steel wire 12118 is in a relaxed state.
- Use the drilling rig 32 to push the sealing push rod 31 and the elastic drill rod 2, and drive the steel wire 12118 to be pulled out by the steel wire traction winch 12119, driving the hydraulic deflection directional drilling Tool 1 drills along the directional hydraulic injection hole.
- Step 43 Use the drilling rig 32 to retract the sealing push rod 31, and at the same time recover the steel wire 12118 through the wire traction winch 12119, and complete the retraction of the elastic drill pipe 2 and the hydraulic deflection directional drilling tool 1 to the bottom of the borehole 6;
- Step 53 Use the drilling machine 32 to drive the sealing push rod 31 and the elastic drill pipe 2, and then drive the hydraulic deflection directional drilling tool 1 to rotate to another designed directional jet drilling direction, and repeat steps 33-43 to complete multi-cluster hydraulic deflection directional jetting drilled into.
- Step 61 Use the drilling rig 32 to drive the sealing push rod 31 and the elastic drill pipe 2, and then drive the hydraulic deflection directional drilling tool 1 to move to other designed directional jet drilling positions, and repeat steps 13-53 to complete multi-stage hydraulic deflection directional jetting drilled into.
- Step 14 After drilling the main hole 205 with multiple branches along the coal seam by using the drilling rig 32, use the drilling rig 32 to send the auxiliary slanting body 12120 to the designed directional drilling position for slanting and then fix it through a plurality of whole body push rods 12123;
- Step 24 Connect the sixth water jet nozzle body 1106, multiple elastic drill pipes 2, and sealing push rods 31 in sequence, and use the drilling rig 32 to drive the hydraulic deflection directional drilling tool along the The whole body push rod 12123 is sent to the auxiliary building body 12120 to complete the auxiliary guiding building;
- Step 34 Turn on the high-pressure water injection pump 5, and high-pressure water flows through the sealed push rod 31, the elastic drill pipe 2 to the sixth water jet nozzle body 1106 to perform hydraulic deflection and directional coal breaking, and generate directional hydraulic force with the centerline different from the borehole centerline injection hole;
- Step 44 Use the drilling rig 32 to push the sealing push rod 31 to drive the elastic drill rod 2 and the sixth water jet nozzle body 1106 to continue drilling along the directional hydraulic injection hole to form the branch hole 206;
- Step 54 Use the drilling rig to retract the sealing push rod 31 to complete the retraction of the elastic drill pipe 2 and the sixth water jet nozzle body 1106 to the auxiliary oblique body 12120;
- Step 62 Use the drilling rig 32 to drive the auxiliary deflection assembly 12 to rotate to another designed directional jet drilling direction, and repeat steps 34-54 to complete multi-cluster hydraulic deflection directional jet drilling.
- Step 71 Use the drilling rig to drive the auxiliary deflection assembly to move to another designed directional jet drilling position, and repeat steps 34-62 to complete the multi-stage hydraulic deflection directional jet drilling.
- a hydraulic deflection directional drilling method is provided by using the hydraulic deflection directional drilling device of the fifth embodiment:
- Step 15 After drilling the main hole 205 with multiple branches along the coal seam by using the drilling rig, use the drilling rig 32 to send the auxiliary ramping body 12120 to the designed deflecting directional drilling position through a plurality of whole-body push rods 12123 and then fix it;
- Step 25 Connect the water jet nozzle 11 and multiple elastic drill rods 2 into the whole body push rod 12123, connect the piston rod 302 with the tail end of the elastic drill rod 2, and send them into the whole body push rod 12123;
- the steel wire rope 304 is fixedly connected to the other end of the piston rod 302 after passing through the sealing rubber ring 306, and finally the sealed bearing 305 is connected to the liquid injection joint 307, and the liquid injection joint 307 is passed through
- the high-pressure rubber hose is connected with the high-pressure water injection pump to complete the installation.
- Step 35 Turn on the high-pressure water injection pump 5, and the high-pressure water flows through the liquid injection joint 307 and the whole body push rod 12123, acting on the second piston 301 to generate thrust, pushing the multiple elastic drill pipes 2 and the water jet nozzle 11 forward, and at the same time , open the wire rope winch 308 to control the second piston 301 through the special wire rope 304, and then control the propulsion speed of the elastic drill pipe 2 and the water jet nozzle 11;
- Step 45 Push the elastic drill pipe 2 and the water jet nozzle 11 to the auxiliary building body 12120 to complete the auxiliary building.
- the high-pressure water flows through the piston rod water guide eye 303, the piston rod 302, and multiple elastic drill pipes 2 to the water jet.
- Nozzle 11 is used to realize the directional jet flow of water jet nozzle 11 to break coal and drill.
- Step 55 After drilling the designed distance, stop the high-pressure water injection pump 5, pull the special wire rope 304 through the wire rope winch 308, and then drive the elastic drill pipe 2 and the water jet nozzle 11 to retreat to the auxiliary oblique body 12120.
- Step 63 Use the drilling rig to drive the auxiliary deflection component 12 to rotate to another design direction, and repeat steps 35-55 to complete multi-cluster hydraulic deflection directional jet drilling.
- Step 72 Use the drilling rig to drive the auxiliary whipstock to move to another designed directional jet drilling position, and repeat steps 35-63 to complete multi-stage hydraulic whipstock directional jet drilling.
- hydraulic fracturing tools 102 are used to seal against each other in series. Hydraulic fracturing is carried out in the hole section to guide the expansion of hydraulic fracturing fractures and increase the fracture system.
- the hydraulic deflection directional drilling tool is used to replace the traditional small-radius rotary control device, and the elastic drill rod is pushed to gradually rotate along the coal body to form a hydraulic deflection directional drilling hole; the size of the water jet nozzle and the elastic drill rod are different.
- the small-radius rotary control device Limited by the size of the small-radius rotary control device, it provides a larger rotary radius for the hydraulic deflection directional drilling tool and elastic drill pipe rotation.
- the radial rotary hydraulic jet drilling technology using a small-radius rotary control device it has Large size, small propulsion resistance, large size and high performance of water jet nozzle and elastic drill pipe, simple pushing and drilling process, and low cost.
- the directional drilling technology that combines screw drilling tools with conventional hard drill pipes it has the advantages of small turning radius along the coal body, simple process and low cost, and is suitable for multi-branch directional drilling in small areas.
Abstract
一种水力造斜定向钻进装置，该装置包括水力造斜定向钻具（1）、弹性钻杆（2）、推送组件（3）及高压注水泵（5）；弹性钻杆（2）与水力造斜定向钻具（1）螺纹连接，水力造斜定向钻具（1）包括水射流喷头（11）及造斜辅助组件（12）；推送组件（3）与弹性钻杆（2）相连接，推送组件（3）为杆式推送组件或液压式推送组件；推送组件（3）另外通过高压胶管与高压注水泵（5）连接，高压注水泵（5）向水力造斜定向钻具（1）注水。本发明同时还提供了水力造斜定向钻进装置的钻进方法。本发明主要用于井下煤层水力造斜定向钻进，相较于径向回转水力喷射钻进技术，具备回转半径大、推进阻力小、工艺简单、成本低的优点。相较于水平井定向钻进技术，具有回转半径小，工艺简单，成本低的优点。
Description
本发明涉及煤矿瓦斯灾害防治技术领域，特别涉及一种水力造斜定向钻进装置与方法。
本发明属于煤矿瓦斯灾害防治技术领域，具体涉及煤层中使用水力喷射钻进小半径的径向回转装置及方法。
煤层气是重要的非常规天然气资源之一，在煤矿井下开展高瓦斯煤层的煤层气抽采时，未卸压煤层的煤层气抽采能否取得较好的效果主要取决于煤层的渗透性。但我国大部分矿区的煤层属于高瓦斯低渗煤层，煤质松软且渗透性差，渗透率仅为10
-4～10
-3mD，由于煤层的渗透性直接决定了煤矿瓦斯抽采及利用的效率，解决低渗煤层的煤层气难抽问题已成为确保煤矿安全生产，提高煤层气产量和利用率的关键环节。研发提高低渗煤层的渗透性、煤层气增产的技术与装备，已成为一项艰难而迫切的任务，所以难抽煤层井下增透关键技术及装备研发已成为亟待开展的重要任务。
目前煤层增透多采用密集钻孔方式，单独采用钻孔增透，特别对于穿层钻孔，存在煤体暴露面积少的问题，采用增透技术沿钻孔径向形成多分支径向孔的方式，可显著增大单孔煤体暴露面积。采用径向水力喷射水平钻进技术，煤矿井下钻孔尺寸小，存在回转半径小，推送阻力大，工艺技术复杂等问题，除此之外，由于回转半径限制，水射流喷头与弹性钻杆选型尺寸往往较小，水力钻进与弹性钻杆推送性能较差；采用定向钻进技术，存在回转半径大，施工成本高等问题，不适于单孔多分支小区域钻进增透。
发明内容
本发明的目的在于提供一种水力造斜定向钻进装置与方法。本发明主要 用于井下煤层水力造斜定向钻进，相较于径向回转水力喷射钻进技术，具备回转半径大、推进阻力小、工艺简单、成本低的优点。相较于水平井定向钻进技术，具有回转半径小，工艺简单，成本低的优点。
为实现上述目的，本发明提供如下技术方案：
一种水力造斜定向钻进装置，该装置包括水力造斜定向钻具、弹性钻杆、推送组件及高压注水泵；所述弹性钻杆与水力造斜定向钻具螺纹连接，所述水力造斜定向钻具包括水射流喷头及造斜辅助组件；
所述推送组件与弹性钻杆相连接，所述推送组件为杆式推送组件或液压式推送组件；推送组件另外通过高压胶管与所述高压注水泵连接，高压注水泵向水力造斜定向钻具注水。
进一步地，所述水射流喷头包括第一水射流喷头本体，所述第一水射流喷头本体底部至头部呈倾斜结构；
所述造斜辅助组件包括定向导向体，在所述定向导向体内部从上到下依次设有定向连接段、第一导水段和第一弹性钻杆连接段；所述定向导向体通过所述定向连接段与所述第一水射流喷头本体螺纹连接，通过第一弹性钻杆连接段与所述弹性钻杆螺纹连接，所述第一水射流喷头本体通过定向导向体与弹性钻杆导通；
所述定向连接段的中心线与第一弹性钻杆连接段中心线存在偏角δ，所述第一水射流喷头本体中心线与定向连接段的中心线重合；
所述推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根相连的弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
进一步地，所述水射流喷头包括第二水射流喷头本体，第二水射流喷头本体的底部至头部为竖直结构，在所述第二水射流喷头本体的中间段左、右两侧相对位置设有第一导向喷射孔以及第二导向喷射孔，且第二导向喷射孔 口径大于第一导向喷射孔；
所述造斜辅助组件包括第一导水柔性管，在第一导水柔性管内部从上到下依次设有第一喷头连接段、第二导水段和第二弹性钻杆连接段；所述第一导水柔性管通过第一喷头连接段与所述第二水射流喷头本体螺纹相接，通过第二弹性钻杆连接段与所述弹性钻杆螺纹相接，所述水射流喷头本体通过第一导水柔性管与弹性钻杆导通；第二导向喷射孔口径大于第一导向喷射孔，在水射流钻进时，第二水射流喷头本体产生侧向力F，作用于第一导水柔性管，从而实现钻具定向；
所述推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根相连的弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
进一步地，所述水射流喷头包括第五水射流喷头本体，第五水射流喷头本体的底部至头部为竖直结构；所述第五水射流喷头本体与所述弹性钻杆通过螺纹相接；
所述造斜辅助组件包括钢丝固定环、钢丝和钢丝牵引绞盘；钢丝通过钢丝固定环与弹性钻杆前端扣押固定相连，钢丝末端缠绕于钢丝牵引绞盘上，钢丝牵引绞盘固定在钻孔外部，通过牵引钢丝控制弹性钻杆发生挠曲，使水射流喷头产生钻进偏角；
所述推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根相连的弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
进一步地，所述水射流喷头包括第六水射流喷头本体，所述第六水射流喷头本体的底部至头部为竖直结构；
所述造斜辅助组件包括辅助造斜体、出射窗口，导向斜面及通体推送杆，所述第六水射流喷头本体与所述弹性钻杆螺纹连接；所述辅助造斜体为通体 管状，在所述辅助造斜体的侧壁上开设有用于第六水射流喷头本体伸出的出射窗口，在所述辅助造斜体的内壁设置有导向斜面，导向斜面一端与辅助造斜体上沿焊接固定，另一端与辅助造斜体内壁焊接固定，与辅助造斜体轴向夹角为γ，所述辅助造斜体底端与多根通体推送杆螺纹连接，所述通体推送杆为通体管状，所述辅助造斜辅助组件布置在钻孔内，为第六水射流喷头本体与弹性钻杆提供导向斜面，多根弹性钻杆带动第六水射流喷头本体推送至导向斜面后，产生弯曲，沿导向斜面由出射窗口出射钻进；
推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根相连的弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
进一步地，所述水射流喷头包括第七水射流喷头本体，所述第七水射流喷头本体的底部至头部为竖直结构；
所述造斜辅助组件包括辅助造斜体、出射窗口，导向斜面及通体推送杆，所述第七水射流喷头本体与所述弹性钻杆螺纹连接；所述辅助造斜体为通体管状，在所述辅助造斜体的侧壁上开设有用于第七水射流喷头本体伸出的出射窗口，在所述辅助造斜体的内壁设置有导向斜面，导向斜面一端与辅助造斜体上沿焊接固定，另一端与辅助造斜体内壁焊接固定，与辅助造斜体轴向夹角为γ，所述辅助造斜体底端与多根通体推送杆螺纹连接，所述通体推送杆为通体管状；
所述推送组件为液压式推送组件，包括第二活塞、活塞杆、活塞杆导水花眼、钢丝绳、密封轴承、密封胶圈、注液接头、钢丝绳绞车、限位斜面、轴承；其中第二活塞安装在所述活塞杆上，所述活塞杆一端与弹性钻杆螺纹导通相接，另一端与钢丝绳通过轴承可相对转动连接，并且在所述活塞杆外壁开设有活塞杆导水花眼，第二活塞可沿通体推送杆、辅助造斜体内壁密封滑动，并于辅助造斜体端口内壁焊接固定有限位斜面，用于第二活塞限位， 并起到阻挡煤矸石作用；注液接头一端与通体推送杆螺纹导通相接，另一端与密封轴承螺纹相连；密封轴承内部设有密封胶圈，钢丝绳穿过密封胶圈的内孔并沿密封轴承密封滑动，并由钢丝绳绞车固定与牵引。
进一步地，所述钢丝绳包括钢丝绳本体及包覆在所述钢丝绳本体外部的密封胶体。
利用上述水力造斜定向钻进装置，提供一种水力造斜定向钻进方法，具体包括以下步骤：
步骤1：施工钻孔至煤层内部完毕后，利用推送组件、弹性钻杆将水力造斜定向钻具的水射流喷头送至钻孔内设计造斜钻进位置；
步骤2：将杆式推送组件或液压式推动组件通过高压胶管与高压注水泵连接，开启高压注水泵，高压水流经弹性钻杆至水力造斜定向钻具的水射流喷头进行水力造斜定向破煤，产生中心线与钻孔中心线不同向的定向水力喷射孔；
步骤3：利用推送组件继续推送，弹性钻杆受力挠曲，带动水力造斜定向钻具沿定向水力喷射孔逐步定向钻进，形成水力造斜定向钻进孔；
步骤4：利用推送组件将弹性钻杆与水力造斜定向钻具回撤至钻孔；
步骤5：利用推送组件带动弹性钻杆、水力造斜定向钻具旋转或移动至另外设计定向喷射钻进方向，重复步骤3-4，完成多簇水力造斜定向喷射钻进。
与现有技术相比，本发明的有益效果如下：本发明采用水力造斜定向钻具代替传统小半径回转控制装置，并通过弹性钻杆推送，沿煤体逐步回转钻进，形成水力造斜定向钻孔；水射流喷头与弹性钻杆尺寸均不受小半径回转控制装置尺寸限制，为水力造斜定向钻具与弹性钻杆回转提供了更大回转半径，相较于采用小半径回转控制装置的径向回转水力喷射钻进技术，具备回转半径大、推进阻力小、水射流喷头与弹性钻杆尺寸大且性能高、推送与钻进工艺简单、成本低等优点。相较于采用螺杆钻具与常规硬质钻杆结合的定 向钻进技术，具有沿煤体回转半径小，工艺简单，成本低等优点，适合小区域多分支定向回转钻进。
图1为本发明水力造斜定向钻进装置的结构示意图；也是本发明的实施例一的结构示意图
图2为本发明实施例一的水射流喷头与造斜辅助组件安装结构示意图；
图3为本发明实施例二的水射流喷头与造斜辅助组件安装结构示意图；
图4为实施例一～实施例二的造斜定向钻进装置的钻进方法示意图；
图5为本发明实施例三的水射流喷头与造斜辅助组件安装结构示意图；
图6为本发明实施例三的造斜定向钻进装置及其钻进方法示意图；
图7为本发明实施例四的造斜定向钻进装置及其钻进方法示意图；
图8为本发明实施例四的水射流喷头与弹性钻杆的结构示意图；
图9为图8的a-a向剖视图；
图10为本发明实施例四的造斜辅助组件结构示意图；
图11为本发明实施例五的造斜定向钻进装置及其钻进方法示意图；
图12为水力造斜定向钻进煤层段水力压裂示意图；
图13为本发明具体实施方式中弹性钻杆的第一种结构示意图；
图14为图13的A-A向剖视图；
图15为本发明具体实施方式中弹性钻杆的第二种结构示意图；
图16为图15的b-b向剖视图；
图中：1、水力造斜定向钻具；
2、弹性钻杆；201、柔性内管；202、弹性外杆；203、第一前端扣押；204、套扣；205、前端连接头；206、尾部连接头；207-第二前端扣押；208-尾端扣押；209-柔性固定件；
3、推送组件；31、密封推送杆；32、钻机；
301、第二活塞；302、活塞杆；303、活塞杆导水花眼；304、钢丝绳；3041、钢丝绳本体；3042、密封胶体；305、密封轴；306、承密封胶圈；307、注液接头；308、钢丝绳绞车；309、限位斜面；310、轴承；
5、高压注水泵，6、钻孔，7、水力造斜定向钻进孔，8、水力平直钻进孔；
11、水射流喷头；1101、第一水射流喷头本体；1102、第二水射流喷头本体；11021、第一导向喷射孔；11022、第二导向喷射孔；1105、第五水射流喷头本体；1106、第六水射流喷头本体；1107、第七水射流喷头本体；
12、造斜辅助组件；1201、定向导向体；12011、定向连接段；12012、第一导水段；12013、第一弹性钻杆连接段；
1202、第一导水柔性管；12021、第一喷头连接段；12022、第二导水段；12023、第二弹性钻杆连接段；
12117、钢丝固定环；12118、钢丝；12119、钢丝牵引绞盘；
12120、辅助造斜体；12121、出射窗口；12122、导向斜面；12123、通体推送杆。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
请参阅图1-图2，一种水力造斜定向钻进装置，该装置包括水力造斜定向钻具1、弹性钻杆2、推送组件3及高压注水泵5；所述弹性钻杆2与水力造斜定向钻具1螺纹连接，所述水力造斜定向钻具1包括水射流喷头11及造斜辅助组件12；
所述推送组件3与弹性钻杆2相连接，所述推送组件3为杆式推送组件或液压式推送组件；推送组件3另外通过高压胶管与所述高压注水泵5连接，高压注水泵5向水力造斜定向钻具1注水。
所述水射流喷头11包括第一水射流喷头本体1101，所述第一水射流喷头本体1101底部至头部呈倾斜结构；
所述造斜辅助组件12包括定向导向体1201，在所述定向导向体1201内部从上到下依次设有定向连接段12011、第一导水段12012和第一弹性钻杆连接段12013；所述定向导向体1201通过所述定向连接段12011与所述第一水射流喷头本体1101螺纹连接，通过第一弹性钻杆连接段12013与所述弹性钻杆2螺纹连接，所述第一水射流喷头本体1101通过定向导向体1201与弹性钻杆2导通；
所述定向连接段12011的中心线与第一弹性钻杆连接段12013中心线存在偏角δ，所述偏角δ＜30°，偏角δ的设置可使水射流喷头11产生与钻孔轴向不一致的射流钻进偏角，所述第一水射流喷头本体1101中心线与定向连接段12011的中心线重合；
所述推送组件3为杆式推送组件，包括密封推送杆31和钻机32，所述密封推送杆31与多根相连的弹性钻杆2螺纹连接，高压密封推送杆31通过钻机32夹持控制，高压密封推送杆31通过高压胶管与高压注水泵5连接。
实施例二
与实施例一的不同之处在于：
参照图3，所述水射流喷头11包括第二水射流喷头本体1102，第二水射流喷头本体1102的底部至头部为竖直结构，在所述第二水射流喷头本体1102的中间段左、右两侧相对位置设有第一导向喷射孔11021以及第二导向喷射孔11022，且第二导向喷射孔11022口径大于第一导向喷射孔11021；
所述造斜辅助组件12包括第一导水柔性管1202，在第一导水柔性管1202 内部从上到下依次设有第一喷头连接段12021、第二导水段12022和第二弹性钻杆连接段12023；所述第一导水柔性管1202通过第一喷头连接段12021与所述第二水射流喷头本体1102螺纹相接，通过第二弹性钻杆连接段12023与所述弹性钻杆2螺纹相接，所述水射流喷头本体21通过第一导水柔性管1202与弹性钻杆2导通；第二导向喷射孔11022口径大于第一导向喷射孔11021，在水射流钻进时，第二水射流喷头本体1102产生侧向力F，作用于第一导水柔性管1202，从而实现钻具定向；
所述推送组件3为杆式推送组件，包括密封推送杆31和钻机32，所述密封推送杆31与多根相连的弹性钻杆2螺纹连接，高压密封推送杆31通过钻机32夹持控制，高压密封推送杆31通过高压胶管与高压注水泵5连接。
实施例三
与实施例一的不同之处在于：
参照图5-图6，所述水射流喷头11包括第五水射流喷头本体1105，第五水射流喷头本体1105的底部至头部为竖直结构；所述第五水射流喷头本体1105与所述弹性钻杆2通过螺纹相接；
所述造斜辅助组件12包括钢丝固定环12117、钢丝12118和钢丝牵引绞盘12119；钢丝12118通过钢丝固定环12117与弹性钻杆2前端扣押固定相连，钢丝12118末端缠绕于钢丝牵引绞盘12119上，钢丝牵引绞盘12119固定在钻孔外部，通过牵引钢丝12118控制弹性钻杆2发生挠曲，使水射流喷头11产生钻进偏角；
所述推送组件3为杆式推送组件，包括密封推送杆31和钻机32，所述密封推送杆31与多根相连的弹性钻杆2螺纹连接，高压密封推送杆31通过钻机32夹持控制，高压密封推送杆31通过高压胶管与高压注水泵5连接。
实施例四
与实施例一的不同之处在于：
参照图7-图10，所述水射流喷头11包括第六水射流喷头本体1106，所述第六水射流喷头本体1106的底部至头部为竖直结构；
所述造斜辅助组件12包括辅助造斜体12120、出射窗口12121，导向斜面12122及通体推送杆12123，所述第六水射流喷头本体1106与所述弹性钻杆2螺纹连接；所述辅助造斜体12120为通体管状，在所述辅助造斜体12120的侧壁上开设有用于第六水射流喷头本体1106伸出的出射窗口12121，在所述辅助造斜体12120的内壁设置有导向斜面12122，导向斜面12122一端与辅助造斜体12120上沿焊接固定，另一端与辅助造斜体12120内壁焊接固定，与辅助造斜体12120轴向夹角为γ，γ＜30°，所述辅助造斜体12120底端与多根通体推送杆12123螺纹连接，所述通体推送杆12123为通体管状，所述辅助造斜辅助组件12布置在钻孔内，为第六水射流喷头本体1106与弹性钻杆2提供导向斜面，多根弹性钻杆2带动第六水射流喷头本体1106推送至导向斜面12122后，产生弯曲，沿导向斜面12122由出射窗口12121出射钻进；
推送组件3为杆式推送组件，包括密封推送杆31和钻机32，所述密封推送杆31与多根相连的弹性钻杆2螺纹连接，高压密封推送杆31通过钻机32夹持控制，高压密封推送杆31通过高压胶管与高压注水泵5连接。
实施例五
与实施例一的不同之处在于：
参照图11，所述水射流喷头11包括第七水射流喷头本体1107，所述第七水射流喷头本体1107的底部至头部为竖直结构；
所述造斜辅助组件12包括辅助造斜体12120、出射窗口12121，导向斜面12122及通体推送杆12123，所述第七水射流喷头本体1107与所述弹性钻杆2螺纹连接；所述辅助造斜体12120为通体管状，在所述辅助造斜体12120的侧壁上开设有用于第七水射流喷头本体1107伸出的出射窗口12121，在所述辅助造斜体12120的内壁设置有导向斜面12122，导向斜面12122一端与辅 助造斜体12120上沿焊接固定，另一端与辅助造斜体12120内壁焊接固定，与辅助造斜体12120轴向夹角为γ，γ＜30°，所述辅助造斜体12120底端与多根通体推送杆12123螺纹连接，所述通体推送杆12123为通体管状；
所述推送组件3为液压式推送组件，包括第二活塞301、活塞杆302、活塞杆导水花眼303、钢丝绳304、密封轴承305、密封胶圈306、注液接头307、钢丝绳绞车308、限位斜面309、轴承310；其中第二活塞301安装在所述活塞杆302上，所述活塞杆302一端与弹性钻杆2螺纹导通相接，另一端与钢丝绳304通过轴承310可相对转动连接，并且在所述活塞杆302外壁开设有活塞杆导水花眼303，第二活塞301可沿通体推送杆12123、辅助造斜体12120内壁密封滑动，并于辅助造斜体12120端口内壁焊接固定有限位斜面309，用于第二活塞301限位，并起到阻挡煤矸石作用；注液接头307一端与通体推送杆12123螺纹导通相接，另一端与密封轴承305螺纹相连；密封轴承305内部设有密封胶圈306，钢丝绳304穿过密封胶圈306的内孔并沿密封轴承305密封滑动，并由钢丝绳绞车308固定与牵引。
所述钢丝绳304包括钢丝绳本体3041及包覆在所述钢丝绳本体3041外部的密封胶体3042。
实施例六
利用实施例一～五的水力造斜定向钻进装置，提供一种水力造斜定向钻进方法，具体包括以下步骤：
步骤1：施工钻孔至煤层内部完毕后，利用推送组件3、弹性钻杆2将水力造斜定向钻具1的水射流喷头送至设计造斜钻进位置；
步骤2：将杆式推送组件或液压式推动组件通过高压胶管与高压注水泵5连接，开启高压注水泵5，高压水流经弹性钻杆2至水力造斜定向钻具1的水射流喷头11进行水力造斜定向破煤，产生中心线与钻孔中心线不同向的定向水力喷射孔；
步骤3：利用推送组件3继续推送，弹性钻杆2受力挠曲，带动水力造斜定向钻具1沿定向水力喷射孔逐步定向钻进，形成水力造斜定向钻进孔；
步骤4：利用推送组件3将弹性钻杆2与水力造斜定向钻具1回撤至钻孔6；
步骤5：利用推送组件带动弹性钻杆2、水力造斜定向钻具1旋转或移动至另外设计定向喷射钻进方向，重复步骤3-4，完成多簇水力造斜定向喷射钻进。
参照图13-图14，本发明的弹性钻杆2第一种结构具体为：弹性钻杆2包括柔性内管201与弹性外杆202，在所述柔性内管201外部沿轴向固定有至少一根弹性外杆202，所述柔性内管201的前、后两端分别设有前端连接头205及尾部连接头206；所述至少一根弹性外杆202通过多个套扣204固定在所述柔性内管201外部，所述多个套扣204套装固定在所述柔性内管201外部，所述套扣204上设有多个用于弹性外杆202穿过的通孔，所述弹性外杆202在通孔中可与套扣204之间相对轴向滑动；所述弹性外杆202前端与柔性内管201前端通过第一前端扣押203固定连接。所述弹性外杆202采用弹簧钢或镍钛合金材料制成。柔性内管201可采用胶管。
参照图15-图16，本发明的弹性钻杆2第二种结构具体为：弹性钻杆2包括柔性内管201与弹性外杆202，在所述柔性内管201外部沿轴向固定有至少一根弹性外杆202，所述柔性内管201的前、后两端分别设有前端连接头205及尾部连接头206；所述至少一根弹性外杆202与柔性内管201的前端通过第二前端扣押207相固定，尾端通过尾端扣押208相固定，在第二前端扣押207和尾端扣押208之间通过柔性固定体209将弹性外杆202和柔性内管201相固定，所述柔性固定体209为胶体、水包布或柔性塑料。水包布与柔性塑料采取缠绕的方式将弹性外杆202和柔性内管201相固定，胶体采用粘接的方式将弹性外杆202和柔性内管201相固定。
所述弹性外杆202为实心圆柱体或中空圆柱管体或强力弹簧管体。
另外，本发明的弹性钻杆2还可由连续的油管，柔性钻杆，聚乙烯管或高压胶管代替使用。弹性钻杆根据送入钻孔的难易程度，本发明的所有实施例中弹性钻杆是由单根或多根弹性钻杆首尾螺纹连接而成(数量根据需要进行选择)。
本发明的水射流喷头11为自进自旋转射流喷头或自旋式射流喷头或多孔射流喷头，水射流喷头11射流破煤产生的孔洞尺寸大于水射流喷头11最大外径，且大于弹性钻杆2外径。本实施例中的所有水射流喷头11均具备多个前射流喷射口及多个后射流喷射口。
下面详细地描述采用各实施例的水力造斜定向钻进装置进行水力造斜定向钻进方法：
1、利用实施例一～二的水力造斜定向钻进装置时，水力造斜定向钻进方法具体为：
步骤11：施工钻孔至煤层内部完毕后，依次连接水力造斜定向钻具的水射流喷头11及造斜辅助组件12、弹性钻杆2，利用推送组件3(杆式推送组件)，将水力造斜定向钻具1送至钻孔6钻孔内设计造斜钻进位置；
步骤21：将密封推送杆31与通过高压胶管与高压注水泵5连接，开启高压注水泵5，高压水流经密封推送杆31、弹性钻杆2至水力造斜定向钻具1进行水力造斜定向破煤，产生中心线与钻孔中心线不同向的定向水力喷射孔；
步骤31：利用钻机32推送密封推送杆31，弹性钻杆2在密封推送杆31推力，以及煤壁反力作用下发生挠曲，带动水力造斜定向钻具1沿定向水力喷射孔逐步定向钻进，形成水力造斜定向钻进孔7；
步骤41：利用钻机32回撤密封推送杆31，进而完成弹性钻杆2与水力造斜定向钻具1回撤至钻孔6底部；
步骤52：利用钻机32带动密封推送杆31与弹性钻杆2，进而带动水力 造斜定向钻具1旋转至另外设计定向喷射钻进方向，重复步骤31-41，完成多簇水力造斜定向喷射钻进。
2、参照图6，利用实施例三的水力造斜定向钻进装置进行水力造斜定向钻进方法具体为：
步骤13：施工钻孔至煤层内部完毕后，依次连接水力造斜定向钻具1、弹性钻杆2、密封推送杆31，利用钻机32通过一根或多根依次连接的密封推送杆31，将水力造斜定向钻具1送至钻孔底部；
步骤23：利用钢丝牵引绞盘12119少量回拉钢丝12118，在钢丝12118与密封推送杆31扭矩作用下，弹性钻杆2产生少量挠曲，将密封推送杆31与通过高压胶管与高压注水泵5连接，开启高压注水泵5，高压水流经密封推送杆31、弹性钻杆2至水力造斜定向钻具1进行水力造斜定向破煤，产生中心线与钻孔中心线不同向的定向水力喷射孔；
步骤33：停止钢丝牵引绞盘12119对钢丝12118牵引，钢丝12118处于松弛状态，利用钻机32推送密封推送杆31、弹性钻杆2，带动钢丝12118由钢丝牵引绞盘12119拉出，带动水力造斜定向钻具1沿定向水力喷射孔钻进，钻进一段距离后，再次利用钢丝牵引绞盘12119少量回拉钢丝12118，通过扭矩作用再次产生定向水力喷射孔，参照设计定向钻进轨迹，计算钻进距离，重复上述定向与钻进步骤，形成水力造斜定向钻进孔8；
步骤43：利用钻机32回撤密封推送杆31，同时通过钢丝牵引绞盘12119回收钢丝12118，完成弹性钻杆2与水力造斜定向钻具1回撤至钻孔6底部；
步骤53：利用钻机32带动密封推送杆31与弹性钻杆2，进而带动水力造斜定向钻具1旋转至另外设计定向喷射钻进方向，重复步骤33-43，完成多簇水力造斜定向喷射钻进。
步骤61：利用钻机32带动密封推送杆31与弹性钻杆2，进而带动水力造斜定向钻具1移动至设计的其他定向喷射钻进位置，重复步骤13-53，完成 多段水力造斜定向喷射钻进。
3、参照图7，利用实施例四的水力造斜定向钻进装置，提供一种水力造斜定向钻进方法：
步骤14：利用钻机32沿煤层施工多段分支钻进主孔205完毕后，利用钻机32通过多根通体推送杆12123将辅助造斜体12120送至设计造斜定向钻进位置后固定；
步骤24：依次连接第六水射流喷头本体1106、多根弹性钻杆2、密封推送杆31，利用钻机32通过一根或多根依次连接的密封推送杆31，将水力造斜定向钻具沿通体推送杆12123内部送至辅助造斜体12120，完成辅助导向造斜；
步骤34：开启高压注水泵5，高压水流经密封推送杆31、弹性钻杆2至第六水射流喷头本体1106进行水力造斜定向破煤，产生中心线与钻孔中心线不同向的定向水力喷射孔；
步骤44：利用钻机32推送密封推送杆31，带动弹性钻杆2与第六水射流喷头本体1106沿定向水力喷射孔继续钻进，形成分支孔206；
步骤54：利用钻机回撤密封推送杆31，完成弹性钻杆2与第六水射流喷头本体1106回撤至辅助造斜体12120；
步骤62：利用钻机32带动辅助造斜辅助组件12旋转至另外设计定向喷射钻进方向，重复步骤34-54，完成多簇水力造斜定向喷射钻进。
步骤71：利用钻机带动辅助造斜辅助组件移动至另外设计定向喷射钻进位置，重复步骤34-62，完成多段水力造斜定向喷射钻进。
4、参照图11，利用实施例五的水力造斜定向钻进装置，提供一种水力造斜定向钻进方法：
步骤15：利用钻机沿煤层施工多段分支钻进主孔205完毕后，利用钻机32通过多根通体推送杆12123将辅助造斜体12120送至设计造斜定向钻进位 置后固定；
步骤25：连接水射流喷头11、多根弹性钻杆2送入通体推送杆12123，将活塞杆302与弹性钻杆2尾端连接后，送入通体推送杆12123；
连接注液接头307与通体推送杆12123后，将钢丝绳304，穿过密封胶圈306后与活塞杆302另一端固定连接，最后连接密封轴承305与注液接头307，并将注液接头307通过高压胶管与高压注水泵相连，完成安装。
步骤35：开启高压注水泵5，高压水流经注液接头307、通体推送杆12123，作用于第二活塞301产生推力，将多根弹性钻杆2与水射流喷头11向前推送，与此同时，开启钢丝绳绞车308通过特制钢丝绳304控制第二活塞301，进而控制弹性钻杆2与水射流喷头11推进速度；
步骤45：弹性钻杆2与水射流喷头11推送至辅助造斜体12120后完成辅助造斜，与此同时高压水流经活塞杆导水花眼303、活塞杆302、多根弹性钻杆2至水射流喷头11，实现水射流喷头11射流定向射流破煤钻进。
步骤55：钻进设计距离后，停止高压注水泵5，通过钢丝绳绞车308牵引特制钢丝绳304，进而带动弹性钻杆2与水射流喷头11回撤至辅助造斜体12120。
步骤63：利用钻机带动辅助造斜组件12旋转至另外设计方向，重复步骤35-55，完成多簇水力造斜定向喷射钻进。
步骤72：利用钻机带动辅助造斜器移动至另外设计定向喷射钻进位置，重复步骤35-63，完成多段水力造斜定向喷射钻进。
参照图12，在水力造斜定向钻进完毕，形成单簇或多簇水力造斜定向喷射钻进孔基础上，在水力造斜定向钻进煤层段101，利用水力压裂工具102串对封孔段进行水力压裂，达到对水力压裂裂缝扩展的引导，增加裂缝体系。
本发明采用水力造斜定向钻具代替传统小半径回转控制装置，并通过弹性钻杆推送，沿煤体逐步回转钻进，形成水力造斜定向钻孔；水射流喷头与 弹性钻杆尺寸均不受小半径回转控制装置尺寸限制，为水力造斜定向钻具与弹性钻杆回转提供了更大回转半径，相较于采用小半径回转控制装置的径向回转水力喷射钻进技术，具备回转半径大、推进阻力小、水射流喷头与弹性钻杆尺寸大且性能高、推送与钻进工艺简单、成本低等优点。相较于采用螺杆钻具与常规硬质钻杆结合的定向钻进技术，具有沿煤体回转半径小，工艺简单，成本低等优点，适合小区域多分支定向回转钻进。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。
Claims (7)
- 一种水力造斜定向钻进装置，其特征在于，该装置包括水力造斜定向钻具、弹性钻杆、推送组件及高压注水泵；所述弹性钻杆与水力造斜定向钻具螺纹连接，所述水力造斜定向钻具包括水射流喷头及造斜辅助组件；所述推送组件与弹性钻杆相连接，所述推送组件为杆式推送组件或液压式推送组件；推送组件另外通过高压胶管与所述高压注水泵连接，高压注水泵向水力造斜定向钻具注水。
- 如权利要求1所述的一种水力造斜定向钻进装置，其特征在于，所述水射流喷头包括第一水射流喷头本体，所述第一水射流喷头本体底部至头部呈倾斜结构；所述造斜辅助组件包括定向导向体，在所述定向导向体内部从上到下依次设有定向连接段、第一导水段和第一弹性钻杆连接段；所述定向导向体通过所述定向连接段与所述第一水射流喷头本体螺纹连接，通过第一弹性钻杆连接段与所述弹性钻杆螺纹连接，所述第一水射流喷头本体通过定向导向体与弹性钻杆导通；所述定向连接段的中心线与第一弹性钻杆连接段中心线存在偏角δ，所述第一水射流喷头本体中心线与定向连接段的中心线重合；所述推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根相连的弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
- 如权利要求1所述的一种水力造斜定向钻进装置，其特征在于，所述水射流喷头包括第二水射流喷头本体，第二水射流喷头本体的底部至头部为竖直结构，在所述第二水射流喷头本体的中间段左、右两侧相对位置设有第一导向喷射孔以及第二导向喷射孔，且第二导向喷射孔口径大于第一导向喷射孔；所述造斜辅助组件包括第一导水柔性管，在第一导水柔性管内部从上到 下依次设有第一喷头连接段、第二导水段和第二弹性钻杆连接段；所述第一导水柔性管通过第一喷头连接段与所述第二水射流喷头本体螺纹相接，通过第二弹性钻杆连接段与所述弹性钻杆螺纹相接，所述水射流喷头本体通过第一导水柔性管与弹性钻杆导通；第二导向喷射孔口径大于第一导向喷射孔，在水射流钻进时，第二水射流喷头本体产生侧向力F，作用于第一导水柔性管，从而实现钻具定向；所述推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根相连的弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
- 如权利要求1所述的一种水力造斜定向钻进装置，其特征在于，所述水射流喷头包括第五水射流喷头本体，第五水射流喷头本体的底部至头部为竖直结构；所述第五水射流喷头本体与所述弹性钻杆通过螺纹相接；所述造斜辅助组件包括钢丝固定环、钢丝和钢丝牵引绞盘；钢丝通过钢丝固定环与弹性钻杆前端扣押固定相连，钢丝末端缠绕于钢丝牵引绞盘上，钢丝牵引绞盘固定在钻孔外部，通过牵引钢丝控制弹性钻杆发生挠曲，使水射流喷头产生钻进偏角；所述推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根相连的弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
- 如权利要求1所述的一种水力造斜定向钻进装置，其特征在于，所述水射流喷头包括第六水射流喷头本体，所述第六水射流喷头本体的底部至头部为竖直结构；所述造斜辅助组件包括辅助造斜体、出射窗口，导向斜面及通体推送杆，所述第六水射流喷头本体与所述弹性钻杆螺纹连接；所述辅助造斜体为通体管状，在所述辅助造斜体的侧壁上开设有用于第六水射流喷头本体伸出的出 射窗口，在所述辅助造斜体的内壁设置有导向斜面，导向斜面一端与辅助造斜体上沿焊接固定，另一端与辅助造斜体内壁焊接固定，与辅助造斜体轴向夹角为γ，所述辅助造斜体底端与多根通体推送杆螺纹连接，所述通体推送杆为通体管状，所述辅助造斜辅助组件布置在钻孔内，为第六水射流喷头本体与弹性钻杆提供导向斜面，多根弹性钻杆带动第六水射流喷头本体推送至导向斜面后，产生弯曲，沿导向斜面由出射窗口出射钻进；推送组件为杆式推送组件，包括密封推送杆和钻机，所述密封推送杆与多根弹性钻杆螺纹连接，高压密封推送杆通过钻机夹持控制，高压密封推送杆通过高压胶管与高压注水泵连接。
- 如权利要求1所述的一种水力造斜定向钻进装置，其特征在于，所述水射流喷头包括第七水射流喷头本体，所述第七水射流喷头本体的底部至头部为竖直结构；所述造斜辅助组件包括辅助造斜体、出射窗口，导向斜面及通体推送杆，所述第七水射流喷头本体与所述弹性钻杆螺纹连接；所述辅助造斜体为通体管状，在所述辅助造斜体的侧壁上开设有用于第七水射流喷头本体伸出的出射窗口，在所述辅助造斜体的内壁设置有导向斜面，导向斜面一端与辅助造斜体上沿焊接固定，另一端与辅助造斜体内壁焊接固定，与辅助造斜体轴向夹角为γ，所述辅助造斜体底端与多根通体推送杆螺纹连接，所述通体推送杆为通体管状；所述推送组件为液压式推送组件，包括第二活塞、活塞杆、活塞杆导水花眼、钢丝绳、密封轴承、密封胶圈、注液接头、钢丝绳绞车、限位斜面、轴承；其中第二活塞安装在所述活塞杆上，所述活塞杆一端与弹性钻杆螺纹导通相接，另一端与钢丝绳通过轴承可相对转动连接，并且在所述活塞杆外壁开设有活塞杆导水花眼，第二活塞可沿通体推送杆、辅助造斜体内壁密封滑动，并于辅助造斜体端口内壁焊接固定有限位斜面，用于第二活塞限位， 并起到阻挡煤矸石作用；注液接头一端与通体推送杆螺纹导通相接，另一端与密封轴承螺纹相连；密封轴承内部设有密封胶圈，钢丝绳穿过密封胶圈的内孔并沿密封轴承密封滑动，并由钢丝绳绞车固定与牵引。
- 一种水力造斜定向钻进装置的钻进方法，采用如权利要求1-6任意一项所述的水力造斜定向钻进装置实现，具体包括以下步骤：步骤1：施工钻孔至煤层内部完毕后，利用推送组件、弹性钻杆将水力造斜定向钻具的水射流喷头送至钻孔内设计造斜钻进位置；步骤2：将杆式推送组件或液压式推动组件通过高压胶管与高压注水泵连接，开启高压注水泵，高压水流经弹性钻杆至水力造斜定向钻具的水射流喷头进行水力造斜定向破煤，产生中心线与钻孔中心线不同向的定向水力喷射孔；步骤3：利用推送组件继续推送，弹性钻杆受力挠曲，带动水力造斜定向钻具沿定向水力喷射孔逐步定向钻进，形成水力造斜定向钻进孔；步骤4：利用推送组件将弹性钻杆与水力造斜定向钻具回撤至钻孔；步骤5：利用推送组件带动弹性钻杆、水力造斜定向钻具旋转或移动至另外设计定向喷射钻进方向，重复步骤3-4，完成多簇水力造斜定向喷射钻进。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022510807A JP7293497B2 (ja) | 2021-05-26 | 2021-09-02 | 水力傾斜付け指向性掘削装置及び方法 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110576619.7 | 2021-05-26 | ||
| CN202110576619.7A CN113266281B (zh) | 2021-05-26 | 2021-05-26 | 一种定向回转钻具及使用方法 |
| CN202110780143.9A CN113445915B (zh) | 2021-07-09 | 2021-07-09 | 一种水力造斜定向钻进装置与方法 |
| CN202110780143.9 | 2021-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022247043A1 true WO2022247043A1 (zh) | 2022-12-01 |
Family
ID=84228410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2021/116176 WO2022247043A1 (zh) | 2021-05-26 | 2021-09-02 | 一种水力造斜定向钻进装置与方法 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7293497B2 (zh) |
| WO (1) | WO2022247043A1 (zh) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014201420A1 (de) * | 2014-01-27 | 2015-07-30 | Rüdiger Kögler | Erstellung eines Bohrlochs und gleichzeitige Verlegung einer Rohrleitung in dem Bohrloch |
| CN109083594A (zh) * | 2018-08-17 | 2018-12-25 | 中煤科工集团重庆研究院有限公司 | 煤层水力化方向可调钻进装置 |
| CN111173555A (zh) * | 2020-01-07 | 2020-05-19 | 山西晋煤集团技术研究院有限责任公司 | 一种底抽巷梳状长钻孔的钻冲一体化施工工艺 |
| CN111810086A (zh) * | 2020-06-12 | 2020-10-23 | 煤科集团沈阳研究院有限公司 | 一种前端动力型水力大直径分级造穴卸压增透装置及方法 |
| CN113266281A (zh) * | 2021-05-26 | 2021-08-17 | 中煤科工集团沈阳研究院有限公司 | 一种定向回转钻具及使用方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010538187A (ja) | 2007-08-30 | 2010-12-09 | シュルンベルジェ ホールディングス リミテッド | ２つのボトムホールアセンブリを有する掘削システム |
-
2021
- 2021-09-02 JP JP2022510807A patent/JP7293497B2/ja active Active
- 2021-09-02 WO PCT/CN2021/116176 patent/WO2022247043A1/zh unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014201420A1 (de) * | 2014-01-27 | 2015-07-30 | Rüdiger Kögler | Erstellung eines Bohrlochs und gleichzeitige Verlegung einer Rohrleitung in dem Bohrloch |
| CN109083594A (zh) * | 2018-08-17 | 2018-12-25 | 中煤科工集团重庆研究院有限公司 | 煤层水力化方向可调钻进装置 |
| CN111173555A (zh) * | 2020-01-07 | 2020-05-19 | 山西晋煤集团技术研究院有限责任公司 | 一种底抽巷梳状长钻孔的钻冲一体化施工工艺 |
| CN111810086A (zh) * | 2020-06-12 | 2020-10-23 | 煤科集团沈阳研究院有限公司 | 一种前端动力型水力大直径分级造穴卸压增透装置及方法 |
| CN113266281A (zh) * | 2021-05-26 | 2021-08-17 | 中煤科工集团沈阳研究院有限公司 | 一种定向回转钻具及使用方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7293497B2 (ja) | 2023-06-19 |
| JP2023523873A (ja) | 2023-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108643869B (zh) | 一种海底浅层天然气水合物固态流化绿色开采装置及方法 | |
| CN101660391B (zh) | 一种径向水平钻井装置 | |
| CN110617044B (zh) | 一种超高压水射流割缝系统及其使用方法 | |
| CN203081296U (zh) | 水力喷射多喷嘴径向钻孔装置 | |
| CN100387803C (zh) | 磨料水射流井下多辐射孔超深钻孔装置 | |
| CN101824966A (zh) | 一种高压水力喷射超短半径水平井眼的装置 | |
| CN203201467U (zh) | 液控中空球形关节连接喷射钻进径向井导向工具 | |
| CN202325239U (zh) | 水力喷射径向钻孔装置 | |
| CN105134112A (zh) | 煤矿井下瓦斯抽采钻孔的洗孔方法 | |
| CN110566165A (zh) | 大曲率水平裸眼井筒柔性筛管下入装置及下入方法 | |
| CN106837171B (zh) | 一种致密储层径向钻进工具套件 | |
| WO2022247043A1 (zh) | 一种水力造斜定向钻进装置与方法 | |
| CN108547576A (zh) | 变水压脉冲控制钻具 | |
| CN110630182B (zh) | 水力喷射钻进小半径径向回转装置及方法 | |
| CN1227445C (zh) | 水射流连续推进的定向钻机 | |
| CN201372772Y (zh) | 超短半径径向水平井高压水射流喷射组合工具 | |
| CN103924923B (zh) | 同步多分支径向水平井完井方法及工具 | |
| CN113445915B (zh) | 一种水力造斜定向钻进装置与方法 | |
| CN214463880U (zh) | 一种静态梳状钻孔装置 | |
| CN112682090B (zh) | 基于冲击工艺的煤层钻孔互联方法、系统及瓦斯抽采方法 | |
| CN105201436B (zh) | 利用窄间隙高速流体拖曳力送进高压软管的方法 | |
| CN210134806U (zh) | 煤层瓦斯抽采钻孔修复设备 | |
| CN208885186U (zh) | 一种连续油管输送高压水流系统 | |
| CN208152998U (zh) | 连续油管钢粒射流射孔装置 | |
| CN203559775U (zh) | 煤矿用自进式防爆高压水射流钻机 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 2022510807 Country of ref document: JP Kind code of ref document: A |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21942610 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |