WO2003058023A1 - Module de transmission d'energie d'un impacteur, impacteur a jet hydraulique, et application correspondante - Google Patents

Module de transmission d'energie d'un impacteur, impacteur a jet hydraulique, et application correspondante Download PDF

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Publication number
WO2003058023A1
WO2003058023A1 PCT/CN2003/000027 CN0300027W WO03058023A1 WO 2003058023 A1 WO2003058023 A1 WO 2003058023A1 CN 0300027 W CN0300027 W CN 0300027W WO 03058023 A1 WO03058023 A1 WO 03058023A1
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WO
WIPO (PCT)
Prior art keywords
impactor
anvil
cylinder
cavity
power transmission
Prior art date
Application number
PCT/CN2003/000027
Other languages
English (en)
French (fr)
Other versions
WO2003058023A8 (fr
Inventor
Xinghua Tao
Guoqiang Xu
Xutian Hou
Yijin Zeng
Original Assignee
China Petroleum & Chemical Corporation
Exploration & Production Research Institute, Sinopec
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 CN 02200714 external-priority patent/CN2530018Y/zh
Priority claimed from CN 02200716 external-priority patent/CN2550477Y/zh
Application filed by China Petroleum & Chemical Corporation, Exploration & Production Research Institute, Sinopec filed Critical China Petroleum & Chemical Corporation
Priority to US10/487,303 priority Critical patent/US7426965B2/en
Priority to DE10392218T priority patent/DE10392218B4/de
Priority to AU2003207096A priority patent/AU2003207096A1/en
Priority to CA2458124A priority patent/CA2458124C/en
Publication of WO2003058023A1 publication Critical patent/WO2003058023A1/zh
Publication of WO2003058023A8 publication Critical patent/WO2003058023A8/zh
Priority to NO20043382A priority patent/NO330004B1/no

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00Drives for drilling, used in the borehole

Definitions

  • Impactor power transmission mechanism hydrodynamic jet impactor and uses thereof
  • the present invention relates to rotary drilling tools. Specifically, the present invention relates to an impactor power transmission mechanism and a hydrodynamic jet impactor. The invention also relates to the use of the hydrodynamic jet impactor. Background technique
  • Hydrodynamic jet impactor is a kind of downhole power drilling tool that realizes rotary drilling technology.
  • Rotary drilling is a new drilling technology developed on the basis of conventional drilling. Its working principle is A hydraulic impactor is added to the upper part of the core cylinder. During the drilling process, the drill bit rotates with the drill string under a certain bit pressure. At the same time, the drill bit also receives high-frequency impact force from the impactor. Under the combined action of rotation and impact, The rock is broken, which can greatly increase the drilling speed.
  • the currently developed hydrodynamic jet impactors generally include an upper joint 1, an outer cylinder with an upper end screwed to the lower end of the upper joint 2, and an upper end with the outer joint.
  • the lower end of the barrel is threaded and provided with a central joint 3 with a central channel, an outer tube whose upper end is threaded with the lower end of the middle joint 4, and a multi-square sleeve threaded with the lower end of the outer tube and provided with a central channel. 5.
  • An anvil installed in the square sleeve and tapped with an external thread at its lower end 6.
  • a hole at its upper end is connected to the lower end of the anvil by an internal thread and an internal tap is provided at the lower end for a screwing tool
  • the central channel of the middle joint is in communication with the outer tube lumen, and one of the outer tube, the middle joint and the outer tube is provided with a Central and upper shunting gland 8 with multiple shunt holes, a jet element 9 with multiple outflow holes 90, a cylinder block 10 with an inner cavity, a piston 11 disposed in the inner cavity of the cylinder body, and a
  • the piston is connected to a piston rod 12, a lower cylinder head 13 mounted on the bottom end of the cylinder block and having a central opening through which the piston rod passes, and a piston rod connected to the piston rod and facing the anvil.
  • the impact hammer 14 that exerts an impact on the top end of the cylinder is composed of the shunt holes of the upper shunt gland, which can drain the working fluid that does not need to participate in the impactor to make it participate in the drilling cycle. It is divided into an upper cavity 15 and a lower cavity 16, one of the outflow holes of the jet element communicates with the lower cavity through a cylinder side cavity channel 17, and the corresponding inner wall surface of the outer cylinder and the outer peripheral surface of the cylinder are defined The interface of this side cavity channel is formed in other words, the side cavity channel is formed between the corresponding inner wall surface of the outer cylinder and the outer peripheral surface of the cylinder, that is, a cross section is roughly drawn on the outer peripheral surface of the cylinder.
  • the torque on the drill string is transmitted to the anvil through the square sleeve and then to the lower joint, and finally to the drill bit, so that the screw
  • the drill and the like mounted on the lower joint are drilled under the action of rotation and impact.
  • Such a hydrodynamic jet impactor can greatly improve drilling efficiency and reduce drilling costs.
  • the anvil, the square sleeve and the lower joint generally constitute a so-called impactor power transmission mechanism.
  • the consumables in the hydrodynamic jet impactor need to be replaced due to wear and tear, which results in a short single-use life of the hydrodynamic jet impactor.
  • These wearing parts mainly appear in two parts, that is, the shunt hole of the upper shunt gland and the 0-shaped rubber seal ring between the outer peripheral surface of the cylinder and the inner wall surface of the outer cylinder, in order to seal the side cavity passage of the cylinder body.
  • a 0-shaped rubber seal is used to allow the liquid from the jet element to enter the lower cavity of the cylinder.
  • the 0-shaped seal is called the main seal. It is known from practice that its service life is usually less than 30 Hours and therefore the single-shot service life of this hydrodynamic jet impactor is less than 30 hours.
  • the reason why the above rubber main seal is easy to wear during work is because the speed of the drilling fluid flowing through the seal is too high and the shapes of various components are irregular, so it is easy to cause swirl or vortex to directly erode the seal, and because of the bottom of the well Due to the high temperature, high pressure and corrosion of drilling fluid, premature aging or damage to the main seal due to erosion of main internal parts will occur.
  • the reason that the above-mentioned shunt hole is easy to wear is that the upper shunt gland material is generally an alloy structural steel with a lower hardness such as HRC28-32, such as 40Cr, 35CrMo, etc. Therefore, under the action of high-speed fluid, the shunt hole is extremely easy Eroded. Generally, the service life of the shunt hole is about 30 hours.
  • the use of impactors to increase drilling speed is not very effective. This is mainly because when the impact energy is transmitted to the drill through the impactor power transmission mechanism, the impact energy has been reduced by about 60%, that is, the impact energy transmitted to the drill is less than 40%, so The working efficiency of the rock breaking method of impact + rotation is greatly reduced.
  • the upper shunt glands need to be replaced frequently.
  • One reason for replacing the upper shunt gland is that the shunt hole is easy to be eroded as described above, and another reason is that because the shunt hole is a fixed size, in order to cope with different working liquid flow rates, the upper shunt gland needs to be
  • the shunt holes are reprocessed into corresponding different sizes, or a series of upper shunt glands with different shunt hole sizes need to be provided for use. Therefore, this causes an increase in the operating cost of the upper shunt gland and is not conducive to the improvement of work efficiency.
  • An object of the present invention is to provide a hydrodynamic jet impactor capable of overcoming the problem of short single-use life of the impactor in the prior art mentioned above and thereby improving working efficiency.
  • Another object of the present invention is to provide a hydrojet impactor capable of improving impact energy transmission efficiency by improving the impactor power transmission mechanism, thereby improving drilling speed and thus working efficiency.
  • Still another object of the present invention is to provide a hydraulic jet impactor without replacing the entire upper shunt gland, thereby reducing the production cost of the upper shunt gland and improving work efficiency.
  • a hydrodynamic jet impactor which includes an outer cylinder, a jet element installed in the outer cylinder and having a plurality of outflow holes, and A cylinder body having an inner cavity in the outer cylinder, an upper shunt gland having a plurality of shunt holes, a piston disposed in the inner cavity of the cylinder body by dividing the inner cavity of the cylinder into an upper cavity and a lower cavity, A piston rod connected to the piston, a lower cylinder head with a central opening, an impact hammer connected to the piston rod, and an impactor power transmission mechanism, wherein the cylinder body is provided at its outer peripheral wall with a jet stream A side cavity channel in which one of the outflow holes of the element communicates with the lower cavity, wherein the side cavity channel is formed at the outer peripheral wall of the iris, that is, the side cavity channel is liquid-tight relative to the inner wall surface of the outer cylinder Ground seal None open.
  • This embodiment changes the formation structure of the side cavity channel of the hydrodynamic jet impactor and thus eliminates the rubber main seal. In this way, the problem of the premature failure of the seal of the hydrodynamic jet impactor is fundamentally solved and improved. In order to improve the drilling speed and drilling efficiency, the single service life of the hydraulic jet impactor has been increased by more than twice.
  • the side cavity channel of the hydrodynamic jet impactor of the present invention is formed at the outer peripheral wall of the cylinder block, that is, the outer peripheral surface of the cylinder block is cut out into a substantially C-shaped cross section. And the groove is welded and sealed from the outside by an arc-shaped metal piece that matches the contour of the cut edge, or the side cavity channel is formed in the outer peripheral wall of the cylinder body by casting, so that The outer peripheral wall of the cylinder itself constitutes the interface of the side cavity channel.
  • a metal mating gasket for axially tightly sealing is provided between the jet element and the upper shunt gland of the cylinder block, and / or is embedded in the central opening of the lower cylinder head.
  • a copper sleeve that tightly surrounds the piston rod.
  • the impactor power transmission mechanism includes: an inner multi-square multi-square sleeve, which passes through a male thread at an upper end thereof and a lower end of an outer tube A female screw connection is arranged in the outer tube; an outer polygonal anvil is slidably assembled in the inner square of the multi-square sleeve, and more than one fluid channel is provided on the top surface of the anvil.
  • These fluid channels communicate with a hollow channel inside the anvil, and a hole with a female thread and for installing a tool with a male thread is provided at the lower end of the anvil, that is, the hole and the hollow
  • the channels are in fluid communication so that drilling fluid can flow through the fluid channels and the hollow channels flow to tools installed in the holes.
  • a nozzle is replaceably installed in the diverter hole of the upper diverter gland, and the nozzle is a series of nozzles having different inner hole sizes.
  • One of the nozzles is made of an alloy steel having a material hardness value HRC of at least about twice the material hardness of the upper split gland.
  • the nozzle is preferably installed in the shunt hole by a clamp, and the inner diameter of the outlet of the nozzle is H, and the inner diameter of the inlet is L, where 0 ⁇ H ⁇ L.
  • an impactor power transmission mechanism which includes: a polygonal sleeve having an inner multi-square shape, which is disposed in the outer tube through an upper end connected to the outer tube; A multi-square anvil is slidably sleeved in the inner square of the multi-square sleeve, and more than one fluid channel is provided on the top surface of the anvil.
  • the channel communicates with a hollow channel inside the anvil, where a hole with a female thread and for mounting a tool with a male thread is provided at the lower end of the anvil, that is, the hole is fluid with the hollow channel Connected so that drilling fluid can flow through the fluid channel and the hollow channel to a tool installed in the hole.
  • the transmission efficiency of impact energy is improved and thus the work efficiency is improved, because when the anvil and the lower joint are combined into one, there is less one thread interface during the transmission of the impact stress wave, and the transmission efficiency of the impact energy It can be increased by 20%, and the transmission distance is shortened due to the shortening of the square box, thereby increasing the transmission efficiency by about 20%.
  • the transmission efficiency of impact energy will be increased by more than 40%.
  • the top surface of the anvil preferably has a circular truncated shape, and the upper surface of the anvil immediately adjacent to the top is a hollow cylindrical shape.
  • the hole is cylindrical, and the connection between the upper end of the square sleeve and the outer tube is a screw connection.
  • an upper sleeve of the anvil is clipped with an open sleeve, which is composed of two semi-circular clips and forms a clearance fit with the outer tube.
  • the inner square of the multi-square sleeve and the outer square of the lower portion of the anvil are preferably regular 11 polygons, where n is 3-10 and preferably 8.
  • the ratio of the length of the inner square of the multi-square sleeve to the diameter of the outer circle of the polygonal cross section is 0.7-1.1, preferably 0.8-1.0.
  • the slope of the top round table of the anvil is 25 ° -75 ° and preferably 45 ° -75 °.
  • the fluid channels are four.
  • the multi-square sleeve is used to control the axial displacement of the anvil.
  • the tool and the anvil are automatically lowered and the impact hammer is lowered, thereby stopping the power mechanism and thereby preventing the impact hammer from impacting the anvil when the tool is suspended.
  • a hydrodynamic jet impactor which includes an outer cylinder, a jet element installed in the outer cylinder and having a plurality of outflow holes, and an inner cylinder and an inner cylinder.
  • the cylinder body is provided at its outer peripheral wall with one of the outflow holes of the jet element and A side cavity channel communicating with the lower cavity, wherein a nozzle is replaceably installed in the shunt hole of the upper shunt gland, and the nozzle is One of a series of nozzles with different bore sizes and is made of an alloy steel with a material hardness value HRC of at
  • the nozzle is preferably installed in the shunt hole through a clamp, or the nozzle is fixed in the shunt hole through a pin.
  • the inner diameter of the outlet of the nozzle hole is H
  • the inner diameter of the inlet thereof is L, where 0 ⁇ H L.
  • a hydrodynamic jet impactor which includes an outer cylinder, a jet element installed in the outer cylinder and having a plurality of outflow holes, and an inner cylinder and an inner cylinder.
  • impact energy transmission efficiency is improved.
  • a nozzle is replaceably installed in the split hole of the upper split gland.
  • the nozzle is one of a series of nozzles with different inner pore sizes and the material hardness value HRC is at least about the same.
  • the upper split gland is made of alloy steel with twice the hardness.
  • the nozzle is preferably installed in the shunt hole through a clamp, or the nozzle is fixed in the shunt hole through a pin.
  • the inner diameter of the outlet of the nozzle hole is H
  • the inner diameter of the inlet is L, where 0 ⁇ H ⁇ L.
  • the hydraulic jet impactor according to the first, third, and fourth aspects of the present invention for drilling hard and brittle fractured formations
  • the lithology of the formations is according to the country Industry standard
  • hardness value is 5 or more
  • compressive strength is OMPa
  • rock drillability extreme value is 5 or more.
  • FIG. 1 is a cross-sectional view of a hydrodynamic jet impactor according to the prior art
  • FIG. 2 is a sectional view of a hydrodynamic jet impactor according to the present invention, which shows the area where the main seal is located;
  • 3 is a cross-sectional view of a cylinder block and a side cavity passage shown in FIG. 2;
  • FIG. 4 is a left side view of the cylinder shown in FIG. 2;
  • FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;
  • Fig. 6 is a sectional view taken along line B-B of Fig. 3;
  • Fig. 7 schematically shows a metal welded sealing structure of the side cavity channel shown in Fig. 1;
  • Fig. 8 is a cross-sectional view showing an impactor power transmission mechanism of the present invention
  • FIG. 9 is a sectional view taken along line A'-A 'of FIG. 8;
  • FIG. 10 is a sectional view taken along line B'-B 'of FIG. 8;
  • FIG. 11 is a cross-sectional view showing an upper split gland according to the present invention.
  • Figure 12 is a sectional view showing a single nozzle
  • Fig. 13 shows a sectional view of the upper split gland provided with the nozzle. detailed description
  • the main seal of the hydrodynamic jet impactor is improved, while in other aspects, the fluid
  • the dynamic jet impactor may have the same structure or feature as the impactor described in CN2385068Y, or it may also adopt the improved feature or structure of other aspects of the present invention to be described below. Therefore, in the hydrodynamic jet impactor according to the first aspect of the present invention, only parts or components related to the main seal will be described.
  • a hydrodynamic jet impactor includes an outer cylinder 2, a jet element 9 having a plurality of outflow holes 90, a cylinder 10, an upper shunt gland 8, and a cylinder provided in the cylinder.
  • the piston divides the inner cavity of the cylinder into an upper cavity 15 and a lower cavity. 16.
  • the cylinder body 10 has a side cavity channel 17 at a part of its outer peripheral wall to fluidly connect one of the outflow holes 90 of the jet element 9 and the lower cavity 16.
  • the side cavity channel is so formed in the cylinder At the outer peripheral wall, that is, a groove having a substantially C-shaped cross section but closed to the inner wall surface of the outer cylinder is pulled out from the outer peripheral surface of the cylinder, that is, the side cavity channel is hermetically isolated from the inner wall surface of the outer cylinder 2, Therefore, the working fluid in the side cavity channel 17 cannot contact the inner wall surface of the outer cylinder, and this seal is isolated This is done by sealing the cutout with an arc-shaped metal sheet that matches the contour of the cutout edge from the outside, so that there is a side cavity channel in the form of an axial channel inside the outer wall of the cylinder.
  • the inner wall surface of the outer cylinder no longer constitutes the interface of the side cavity channel as in CN2385068Y, and therefore it is no longer necessary to set a corresponding O-shaped rubber seal ring between the inner wall surface of the outer cylinder and the outer peripheral surface of the cylinder, so it is avoided
  • the premature aging or damage of the main seal occurs due to the swirling or vortex generated by the high drilling fluid velocity and directly eroding the main seal, and because the metal material is more wear-resistant than the rubber seal, the resistance of the main seal is The abrasiveness is stronger, so the single service life of the hydraulic jet impactor is significantly improved. According to experiments, the single-shot service life of the liquid jet impactor of the present invention reaches 70-80 hours.
  • the formation method or structure of the side cavity channel 17 may not be limited to the above scheme.
  • the side cavity channel 17 may be formed in the outer peripheral wall of the cylinder body by means of casting processing, that is, the outer peripheral wall of the cylinder body itself constitutes the interface of the side cavity channel 17. The advantage brought by this embodiment is that since the side cavity channel is easier to manufacture, the production cost is reduced.
  • a surface may be used between the jet element 9 and the upper shunt gland on the cylinder 10.
  • a smooth metal fits the sealing gasket for axial compression sealing.
  • a copper sleeve 18 is embedded in the central opening of the lower cylinder head 13, which closely surrounds the piston rod 12, moves up and down on the piston rod, and drives an impact hammer for impact During the movement, the copper sleeve and the piston rod are sealed and matched, so the phenomenon of mud seepage and erosion of the impact hammer along the piston rod is prevented.
  • an impactor power transmission mechanism capable of improving impact energy transmission efficiency
  • it includes: an inner multi-square multi-square sleeve, which is disposed at an upper end thereof by being connected to an outer tube;
  • an outer square anvil is slidably sleeved in the inner square of the multi-square sleeve, and more than one fluid channel is provided on the top surface of the anvil, and these fluid channels and the anvil A hollow channel inside the child is in communication, and a hole with a female thread and for installing a tool with a male thread is provided at the lower end of the anvil so that the hole is in fluid communication with the hollow channel.
  • the drilling fluid can flow through the fluid channel and the hollow channel to a tool installed in the hole, and the tool may be a drill bit, a coring tube, or the like.
  • the starting point for designing the power transmission mechanism of the impactor is that according to the relevant wave theory, the impact stress wave will be reflected through the interface. The energy loss is about 20%, and the attenuation of the stress wave is approximately proportional to the transmission distance.
  • the designer has made significant improvements to the transmission mechanism from the consideration of reducing transmission components and minimizing the transmission distance, combining the anvil and the lower joint in the prior art into one.
  • the multi-square set is shortened, thereby increasing the energy transfer efficiency.
  • the transmission efficiency of the impact energy can be increased by 20%.
  • the transmission distance is shortened due to the shortening of the square sleeve, thereby improving the transmission efficiency.
  • the transmission efficiency of impact energy will be increased by more than 40%.
  • a hydrodynamic jet impactor in order to provide a hydrodynamic jet impactor capable of eliminating the need to replace the entire upper shunt gland, thereby reducing the operating cost of the upper shunt gland and improving work efficiency, according to the third aspect of the present invention, as shown in Figure 1 1-
  • a hydrodynamic jet impactor includes an outer cylinder 2, a jet element 9 having a plurality of outflow holes 90, a cylinder block 10, an upper shunt gland 8, and an inner cavity provided in the cylinder.
  • one of the split holes of the upper split gland 8 is replaceably installed with a Nozzle 21, wherein the nozzle is one of a series of nozzles having different inner bore sizes.
  • the inner diameter of the outlet of the nozzle hole is H
  • the inner diameter of the inlet thereof is L, where 0 ⁇ H ⁇ L.
  • the nozzle is made of alloy steel whose material hardness HRC value is at least about twice that of the upper shunt gland material, that is, HRO60 alloy steel such as YG8, YG11 and other hard alloy steel. Therefore, they Has higher wear resistance than the upper shunt gland.
  • nozzles with different inner diameters can be installed in the split holes of the same split gland to meet the needs of different flows.
  • the nozzle can be fixed in the shunt hole by a spring 22 or a pin.
  • the erosion resistance of the splitting holes can be greatly improved and the life of the splitting holes can be prolonged.
  • the nozzles can be easily replaced to meet the needs of different flow rates.
  • the hydrodynamic jet impactor in order to provide a hydrodynamic jet impactor that improves the transmission efficiency of impact energy by improving the power transmission mechanism of the impactor and thereby improves the drilling speed, includes a Outer cylinder 2, a jet element 9 having a plurality of outflow holes 90, a cylinder block 10, an upper shunt gland 8, a piston 11, a piston rod 12, and a central opening provided in the inner cavity of the cylinder
  • the impactor power transmission mechanism includes: A polygonal square sleeve 5 is placed in the outer tube through a male thread on its upper end and a female thread on the lower end of an outer tube 4; an outer polygonal anvil 6 is slidably assembled in the outer tube 4
  • the inner square of the multi-square sleeve 5 is provided with more than one fluid channel on the top surface of the anvil, these fluid channels communicate with a hollow channel inside the anvil, and an attacking
  • a threaded hole for mounting a tool with a male thread that is, the hole is in fluid communication with the hollow channel, so that drilling fluid can flow through the fluid channel and the hollow channel to the tool installed in the hole.
  • the lower joint is omitted.
  • the power transmission components are reduced, so the shock stress wave transmission loss is reduced.
  • the efficiency of impact energy transmission is improved.
  • the present invention in addition to the measures of combining the original anvil and the lower joint into one as described above, the present invention also adopts an The new measure is to provide an opening sleeve 19 on the upper part of the anvil, which is two semi-circular clamping blocks, which are hooped on the upper part of the anvil 6 and form a clearance fit with the outer tube 4.
  • the working process of the open sleeve 19 is as follows: the impact silver 14 hits the anvil 6 downward and transmits the impact stress wave to the tool such as a drill bit, and the multi-square sleeve 5 plays a role of torque transmission during the drilling process, when the drill is lifted away At the bottom of the well, the axial displacement of the anvil 6 is controlled by the square sleeve 5 and the drill and the anvil 5 automatically slide down until the open sleeve 19 sits on the upper end of the square sleeve 5. At the same time, the piston 11 and impact hammer 14 follow Sliding down, thereby stopping the power mechanism, thereby preventing runaway.
  • the opening sleeve 19 plays a role of fixing, protecting and avoiding damage and deformation of the outer tube due to blows.
  • the top of the anvil 5 can be in the shape of a truncated cone or other shape, such as a mushroom head, and four fluid channels are evenly distributed on the surface of the top, and they communicate with a hollow channel inside the anvil. .
  • the anvil and the square sleeve are sealed with a rubber seal 20.
  • the upper part of the anvil close to the top of the outer surface is hollow cylindrical
  • the middle and lower part of the anvil has a hollow outer polygonal shape that cooperates with the inner and outer sides of the multi-square sleeve
  • the lower part of the anvil is cylindrical with the hole.
  • the inner squares of the multi-square set and the outer squares of the lower portion of the anvil are preferably regular n polygons, where n is 3-10 and preferably 8.
  • the ratio of the length of the inner square of the multi-square sleeve to the diameter of the polygonal outer circle of its cross-section is 0.7-1.1, preferably 0.8-1.0.
  • the slope of the top end of the anvil is 25 ° -75 ° and preferably 45 ° -75 °.
  • a hydrodynamic jet impactor includes an outer cylinder 2, a jet element 9 having a plurality of outflow holes 90, a cylinder block 10, an upper shunt gland 8, and an A piston 11 in the inner cavity of the cylinder, a piston rod 12 and a lower cylinder head 13 with a central opening, an impact hammer 14 and an impactor power transmission mechanism, the piston divides the inner cavity of the cylinder into an upper cavity 15 And down cavity 16.
  • the cylinder body 10 is provided with a side cavity channel 17 at a part of the outer peripheral wall thereof, which is in fluid communication with one of the outflow holes 90 of the jet element 9 and the lower cavity 16.
  • the side cavity channel is formed in the cylinder At the outer peripheral wall, that is, a groove having a substantially C-shaped cross section but closed to the inner wall surface of the outer cylinder is pulled out from the outer peripheral surface of the cylinder, that is, the side cavity channel is sealed and isolated from the inner wall surface of the outer cylinder 2,
  • the impactor power transmission mechanism includes: an inner polygonal square box 5 which is placed in the outer pipe through a male thread at its upper end and a lower female thread of an outer pipe 4;
  • a square anvil 6 is slidably assembled in the inner square of the multi-square sleeve 5.
  • At the top surface of the anvil more than one fluid channel is provided, and these fluid channels communicate with a hollow channel inside the anvil.
  • a hole with a female thread and for installing a tool with a male thread is provided in such a manner that the hole is in fluid communication with the hollow channel, thereby drilling. May be through the fluid passage, the hollow passage to the installation tool in the bore.
  • the hydrodynamic jet impactor includes an outer cylinder 2, a jet element 9 having a plurality of outflow holes 90, a cylinder block 10, an upper shunt gland 8, and a cylinder provided in the cylinder.
  • the piston divides the body cavity into an upper cavity 15 and Cavity 16.
  • the cylinder body 10 is provided with a side cavity channel 17 at a part of the outer peripheral wall thereof, which is in fluid communication with one of the outflow holes 90 of the jet element 9 and the lower cavity 16.
  • the side cavity channel is formed in the cylinder At the outer peripheral wall, that is, a groove having a substantially C-shaped cross section but closed to the inner wall surface of the outer cylinder is pulled out from the outer peripheral surface of the cylinder, that is, the side cavity channel is sealed and isolated from the inner wall surface of the outer cylinder 2,
  • a nozzle 21 is replaceably installed in the shunt hole of the upper shroud gland 8.
  • the nozzle is one of a series of nozzles with different inner hole sizes, and the nozzle is made of a material whose hardness HRC value is at least above
  • the split gland material is made of alloy steel with about twice the hardness.
  • a hydrodynamic jet impactor includes an outer cylinder 2, a jet element 9 having a plurality of outflow holes 90, a cylinder block 10, an upper shunt gland 8, and a A piston 11, a piston rod 12, and a centrally-opened lower cylinder head 13 in the inner cavity of the cylinder, and an impact hammer 14 and an impactor power transmission mechanism
  • the impactor power transmission mechanism includes: Polygonal sleeve 5, which is placed in the outer tube by a male thread on its upper end connected to the female thread of the lower end of an outer tube 4; an outer polygonal anvil 6, which is slidably assembled on the polygonal sleeve 5 In the inner side of the anvil, more than one fluid channel is provided on the top surface of the anvil, and these fluid channels communicate with a hollow hollow channel inside the anvil, and a female thread is formed on the lower end of the anvil.
  • a hole for installing a tool with a male thread that is, the hole is in fluid communication with the hollow channel, so that drilling fluid can flow through the fluid channel and the hollow channel to the installation Tools in the hole.
  • a nozzle 21 is replaceably installed in the shunt hole of the upper shroud gland 8.
  • the nozzle is one of a series of nozzles having different inner bore sizes, and the nozzle is made of a material having a hardness HRC value of at least
  • the upper shunt gland material is made of about twice the hardness of the alloy steel.
  • a hydrodynamic jet impactor includes an outer cylinder 2, a jet element 9 having a plurality of outflow holes 90, a cylinder block 10, an upper shunt gland 8, and an The piston 11 in the inner cavity of the cylinder, a piston rod 12 and a lower cylinder head 13 with a central opening, an impact hammer 14 and an impactor power transmission mechanism.
  • the impactor power transmission mechanism includes: A polygonal square sleeve 5 is placed in the outer tube through a male thread on its upper end and a female thread on the lower end of an outer tube 4; an outer polygonal anvil 6 is slidably assembled in the outer tube 4
  • the inner square of the multi-square sleeve 5 is provided with more than one fluid channel on the top surface of the anvil, these fluid channels communicate with a hollow channel inside the anvil, and an attack opening is provided on the lower end of the anvil.
  • a female threaded hole for mounting a tool with a male thread, that is, the hole is in fluid communication with the hollow channel, so that the drilling fluid can flow through the fluid channel and the hollow channel to the worker installed in the hole. .
  • a nozzle 21 is replaceably installed in the split hole of the upper split gland 8.
  • the nozzle is one of a series of nozzles having different inner bore sizes, and And the nozzle is made of alloy steel whose material hardness HRC value is at least about twice that of the upper shunt gland material.
  • the side cavity channel is formed at the outer peripheral wall of the cylinder, that is, a groove having a substantially C-shaped cross section but closed to the inner wall surface of the outer cylinder is cut out from the outer peripheral surface of the cylinder.
  • the side cavity channel is hermetically isolated from the inner wall surface of the outer cylinder 2.
  • the advantage of this embodiment is that, while extending the service life of the main seal and the shunt hole, the upper shunt gland can be adapted to the needs of different flows by replacing the nozzles with different apertures, and the impact energy transmission efficiency can be improved. This improves work efficiency.
  • the lithology of the formations is such that the hardness value is 5 or more and its resistance
  • the compressive strength is 150 MPa and the extreme value of rock drillability is 5 or more. Since the hydraulic jet impactor of the present invention has a stronger impact energy transmission effect and an excellent single service life, it is particularly suitable for formations having the above-mentioned lithology.
  • the particularly applicable range of the hydrodynamic jet impactor of the present invention includes all fields of application of impactors such as petroleum rotary drilling wells, geological core impact rotary drilling, and the like.
  • the impactor power transmission mechanism of the present invention can be used for various impactors such as a jet impactor, a forward-acting impactor, a reverse-acting impactor, a valve-type double-acting impactor, and a jet-suction impactor.

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Description

冲击器功率传递机构、 液动射流式冲击器及其用途 技术领域
总的来说, 本发明涉及旋冲钻井工具。 确切地说, 本发明涉及冲 击器功率传递机构和液动射流式冲击器。 本发明还涉及该液动射流式 冲击器的用途。 背景技术
液动射流式冲击器是一种实现旋冲钻井工艺技术的井下动力钻 具, 而旋冲钻井是在常规钻井基础上发展起来的一项钻井新技术, 它 的工作原理是, 在钻头或取芯筒的上部增加一个液动冲击器, 在钻进 过程中, 钻头在一定钻压下随钻柱旋转, 同时, 钻头还受到来自冲击 器的高频冲击力, 在旋转和冲击的联合作用下, 岩石被破碎, 从而可 以较大幅度地提高钻井速度。
如 CN2385068Y所述并如图 1 所示, 目前研制使用的液动射流式 冲击器一般包括一个上接头 1、 一个其上端与该上接头的下端螺紋连 接的外筒 2、 一个其上端与该外筒的下端螺紋连接的并开设有一中央 通道的中接头 3、 一个其上端与该中接头的下端螺纹连接的外管 4、 一个与该外管的下端螺紋连接的并开设有一中央通道的多方套 5、 一 个安装在该多方套中的且其下端攻有外螺纹的砧子 6、 一个其上端的 孔通过内螺紋与该砧子下端连接的并且其下端设有一个内攻有用于拧 装工具如钻头等的螺纹的孔的下接头 7 , 在这里, 中接头的中央通道 与外管管腔是连通的, 而且在该外筒、 中接头和外管中, 依次设有一 个其上开设有一中央孔和多个分流孔的上分流压盖 8、 一个有多个流 出孔 90 的射流元件 9、 一个有一内腔的缸体 10、 一个设置在该缸体 内腔中的活塞 11、 一个与该活塞相连的活塞杆 12、 一个安装在该缸 体的底端上的并具有一个被该活塞杆穿过其中的中央开孔的下缸盖 13 以及一个与该活塞杆相连的并对该砧子的顶端施加冲击作用的冲击锤 14构成, 其中该上分流压盖的分流孔可以将不需要参与冲击器工作的 工作液体排走以使其参与钻井循环, 而且该活塞将该缸体内腔分成一 个上腔 15 和一个下腔 16 , 该射流元件的其中一个流出孔通过一条缸 体侧腔通道 17 与该下腔连通, 对应的外筒内壁面和缸体外周面限定 出这条侧腔通道的界面, 换句话说, 该侧腔通道是如此在对应的外筒 内壁面和缸体外周面之间形成的, 即在缸体的外周面上掏出一个横截 面大致成 C形的且对外筒内壁面是敞开的槽。 射流元件的作用是已知 的并例如在 CN2385068Y已描述了, 因此在此就不重复说明了。 现在, 具体说明液动射流式冲击器的工作过程。 来自上压盖中央孔的工作液 体通过射流元件并分别通过其流出孔进入缸体的上腔和下腔中, 活塞 和进而活塞杆与冲击锤因上下腔之间的压力差而受控制地往复运动, 从而冲击能被传递给砧子顶端、 下接头和进而钻头, 与此同时, 钻柱 上的扭矩通过多方套传到砧子并进而再传给下接头, 最后传到钻头, 从而使拧装在下接头上的钻头等在旋转和冲击的作用下钻进。 这样的 液动射流式冲击器可以较大幅度地提高钻井效率并降低钻井成本。 在 这里, 砧子、 多方套和下接头一般构成所谓的冲击器功率传递机构。
但是, 在 CN2385068Y 所述的液动射流式冲击器及其功率传递机 构中, 存在以下几个问题。
首先, 液动射流式冲击器中的易损件因磨损而需要更换, 这造成 液动射流式冲击器的单次使用寿命短。 这些易损件主要出现在两个部 位上, 即上分流压盖的分流孔和在缸体外周面和外筒内壁面之间的 0 形橡胶密封圈, 为了密封所述的缸体侧腔通道而使用了 0形橡胶密封 圏, 以使来自射流元件的液体进入缸体下腔, 在这里, 0 形密封圈被 称为主密封, 从实践中得知, 它的使用寿命通常不到 30 个小时并且 由此决定了这种液动射流式冲击器的单次使用寿命不到 30 个小时。 上述橡胶主密封在工作中易于磨损的原因是, 由于流经密封的钻井液 的速度过高并且各部件形状不规则, 所以极易造成旋流或涡流而直接 冲蚀密封件, 并且由于井底钻井液高温、 高压及腐蚀作用的影响, 所 以会出现因主要内部零件受到冲蚀而导致的主密封过早老化或损坏。 此外, 上述分流孔易于磨损的原因是, 上分流压盖材料例如一般是具 有较低硬度如 HRC28-32 的合金结构钢, 例如 40Cr、 35CrMo等, 因 此, 在高速流体作用下, 分流孔极易被冲蚀。 通常, 分流孔的使用寿 命为 30个小时左右。
其次, 使用冲击器来提高钻井速度的效果不十分理想。 这主要是 由于, 当冲击能通过冲击器功率传递机构传到钻头时, 冲击能已有约 60%左右的衰减, 也就是说, 传给钻头的冲击能只有不到 40%, 因而 使得冲击 +旋转的破岩方式的工作效率大大降低。
最后, 需要经常更换上分流压盖。 更换上分流压盖的一个原因是 如上所述的分流孔易于被冲蚀, 而另一个原因是, 由于分流孔为一固 定尺寸, 所以为了应付不同的工作液体流量, 就需要把上分流压盖的 分流孔重新加工成对应的不同尺寸, 或是需要提供一系列有不同的分 流孔尺寸的上分流压盖以备使用。 因此, 这造成上分流压盖的运营成 本提高并且不利于工作效率的提高。
上述这些问题的存在严重影响和制约着液动射流式冲击器的单次 使用寿命和工作效率并进而影响到旋冲钻井工艺技术的推广应用和经 济技术效益。 发明内容
本发明的一个目的是, 提供一种能够克服上述现有技术中的冲击 器单次使用寿命短的问题并由此提高工作效率的液动射流式冲击器。
本发明的又一个目的是提供一种具有更高的冲击能传递效率的冲 击器功率传递机构。
本发明的另一个目的是, 提供一种能够通过改进冲击器功率传递 机构来提高冲击能传递效率并由此提高钻进速度和进而工作效率的液 动射流式冲击器。
本发明的又一个目的是提供一种不用更换整块上分流压盖并由此 降低上分流压盖的生产成本并提高工作效率的液动射流式冲击器。
本发明的再一个目的是提供将根据本发明的液动射流式冲击器用 于在硬脆性破碎性地层中进行钻探的用途。
为实现其中一个上述目的, 根据本发明的笫一方面, 提供一种液 动射流式冲击器, 它包括一个外筒、 一个装在该外筒中并有多个流出 孔的射流元件、 一个装在该外筒中的并有一内腔的缸体、 一个有多个 分流孔的上分流压盖、 一将该缸体内腔分成一上腔和一下腔地设置于 该缸体内腔中的活塞、 一个与该活塞相连的活塞杆、 一个中央开孔的 下缸盖以及一个与该活塞杆相连的冲击锤和一个冲击器功率传递机 构, 其中该缸体在其外周壁处开设有一条使该射流元件的其中一个流 出孔与下腔连通的侧腔通道, 其中侧腔通道是如此成形于所述虹体的 外周壁处的, 即该侧腔通道相对所述外筒的内壁面被不透液地密封隔 绝开。 这个实施例改变了液动射流式冲击器的侧腔通道的形成结构并 由此取消了橡胶主密封, 这样一来, 从根本上解决了液动射流式冲击 器密封过早失效的问题并提高了钻井速度和钻井工作效率, 液动射流 式冲击器的单次使用寿命被提高到两倍以上。
根据另一个实施例, 本发明液动射流式冲击器的侧腔通道是如此 成形于所述缸体的外周壁处的, 即该缸体的外周面被掏出一个横截面 大致成 C形的槽并且所迷槽被从外面用一块与该掏槽的边缘的轮廓吻 合的圓弧状金属片被焊接密封起来, 或者, 该侧腔通道通过铸造成形 于该缸体的外周壁内, 从而所述缸体本身的外周壁构成该侧腔通道的 界面。 '
根据本发明的其它实施例, 在射流元件与缸体的上分流压盖之间 设有一个用于轴向压紧密封的金属配合密封垫片, 和 /或在下缸盖的中 央开孔内镶嵌有一个紧密围绕活塞杆的铜套。
根据本发明的又一个实施例, 在上述液动射流式冲击器的基础 上, 冲击器功率传递机构包括: 一个呈内多方形的多方套, 它通过其 上端的公螺紋与一外管的下端母螺紋连接而被安置在该外管中; 一个 呈外多方形的砧子, 它可滑动地被装配在多方套的内多方, 在所述砧 子的顶端面上开设有一个以上的流体通道, 这些流体通道与该砧子内 部的一条中空通道连通, 在该砧子的下端如此开设有一个攻有母螺紋 的并用于安装一个带有公螺紋的工具的孔, 即所述孔与该中空通道是 流体连通的, 从而钻井液可经过所述流体通道、 该中空通道流向安装 在该孔中的工具。
根据本发明的又一个实施例, 在上述液动射流式冲击器的基础 上, 在上分流压盖的分流孔中, 可更换地安装有一个喷嘴, 该喷嘴是 一系列具有不同内孔 尺寸的喷嘴中的一个并且是用材料硬度值 HRC 至少约是该上分流压盖的材料硬度的两倍的合金钢制成的。
此外, 所述喷嘴最好通过卡箍被安装在该分流孔内, 而且所述喷 嘴的喷孔的出口内径为 H, 其入口内径为 L, 其中 0<H < L。
根据本发明的笫二方面, 提供一种冲击器功率传递机构, 它包括: 一个呈内多方形的多方套, 它通过其上端与一外管连接而被安置在该 外管中; 一个呈外多方形的砧子, 它可滑动地被套装在多方套的内多 方中, 在所述砧子的顶端面上开设有一个以上的流体通道, 这些流体 通道与砧子内部的一条中空通道连通, 其中在该砧子的下端如此开设 有一个攻有母螺紋的并用于安装一个带有公螺紋的工具的孔, 即所述 孔与该中空通道是流体连通的, 从而钻井液可经过所述流体通道、 该 中空通道流向安装在该孔中的工具。 根据这个实施例, 冲击能传递效 率提高了并由此提高了工作效率, 这是因为, 当砧子和下接头合二为 一时, 冲击应力波传递过程中少经过一个螺纹界面, 冲击能传递效率 可提高 20% , 由于多方套缩短而使传递距离缩短, 从而使传递效率也 提高约 20% , 与原结构相比, 冲击能的传递效率将提高 40%以上。
此外, 所述砧子的顶端面最好呈圆台状, 其外表面紧靠顶端的上 部为中空圆柱形, 其中下部呈与多方套的内多方配合的中空外多方形 状, 其最下部呈带有所述孔的圆柱形, 并且多方套上端与外管的连接 是螺紋连接。
根据另一个实施例, 在上述冲击器功率传递机构的基础上, 所述 砧子的上部卡设有一个开口套, 它由两个半圆形卡块构成并且与外管 形成间隙配合。 此外, 多方套的内多方和砧子下部的外多方最好为正 11边形, 其中 n为 3-10并优选为 8。 另外, 多方套的内多方的长度与 其横截面多方形外接圆的直径之比为 0.7-1.1 , 优选地是 0.8-1.0。 此夕卜, 该砧子的顶端圆台的坡度为 25° -75° 并最好为 45° -75° 。 此外, 所 述流体通道是四条。
根据另一个实施例, 在上述冲击器功率传递机构的基础上, 在多 方套和开口套之间有一个水平环形空隙, 如此形成一个防空打机构, 即通过多方套来控制砧子轴向位移, 所述工具和砧子自动下滑并使冲 击锤下滑, 从而使动力机构停止工作并由此防止该冲击锤在该工具悬 空时冲击所述砧子。
根据本发明的笫三方面, 提供一种液动射流式冲击器, 它包括一 个外筒、 一个装在该外筒中并有多个流出孔的射流元件、 一个装在该 外筒中的并有一内腔的缸体、 一个有多个分流孔的上分流压盖、 一将 该缸体内腔分成一上腔和一下腔地设置于该缸体内腔中的活塞、 一个 与该活塞相连的活塞杆、 一个中央开孔的下缸盖以及一个与该活塞杆 相连的冲击锤和一个冲击器功率传递机构, 其中该缸体在其外周壁处 开设有一条使该射流元件的其中一个流出孔与下腔连通的侧腔通道, 其中在上分流压盖的分流孔中, 可更换地安装有一个喷嘴, 该喷嘴是 一系列具有不同内孔径尺寸的喷嘴中的一个并且是用材料硬度值 HRC 至少约是该上分流压盖的材料硬度的两倍的合金钢制成的。 根据这个 实施例 , 分流孔的使用寿命延长了并且可以根据不同流量要求来更换 喷嘴。
此外, 所述喷嘴最好通过卡箍被安装在该分流孔内, 或者, 所述 喷嘴通过销栓被固定在该分流孔内。 另外, 所述喷嘴的喷孔的出口内 径为 H, 其入口内径为 L, 其中 0<H L。
居本发明的第四方面, 提供一种液动射流式冲击器, 它包括一 个外筒、 一个装在该外筒中并有多个流出孔的射流元件、 一个装在该 外筒中的并有一内腔的缸体、 一个有多个分流孔的上分流压盖、 一将 该缸体内腔分成一上腔和一下腔地设置于该缸体内腔中的活塞、 一个 与该活塞相连的活塞杆、 一个中央开孔的下缸盖以及一个与该活塞杆 相连的沖击锤和一个冲击器功率传递机构, 其中该缸体在其外周壁处 开设有一条使该射流元件的其中一个流出孔与下腔连通的侧腔通道, 其中该冲击器功率传递机构是根据本发明第二方面的冲击器功率传递 机构。 根据这个实施例, 提高了冲击能传递效率。
在其它实施例中, 在上分流压盖的分流孔中, 可更换地安装有一 个喷嘴, 该喷嘴是一系列具有不同内孔径尺寸的喷嘴中的一个并且是 用材料硬度值 HRC 至少约是该上分流压盖的材料硬度的两倍的合金 钢制成的。 此外, 所述喷嘴最好通过卡箍被安装在该分流孔内, 或者, 所述喷嘴通过销栓被固定在该分流孔内。 另外, 所述喷嘴的喷孔的出 口内径为 H, 其入口内径为 L, 其中 0<H < L。
根据本发明的笫五方面, 提供了将根据本发明第一、 第三、 笫四 方面的液动射流式冲击器用于钻探硬脆性破碎性地层的用途, 所述地 层的岩性为, 按国家行业标准, 硬度值为 5 级以上并且抗压强度为 OMPa并且岩石可钻性极值为 5级以上。 附图说明
以下, 结合附图来详细描迷本发明的实施形式, 所述附图示出了: 图 1是根据现有技术的液动射流式冲击器的截面图;
图 2 是根据本发明的液动射流式冲击器的截面图, 它示出了主密 封所在区域; 图 3是图 2所示缸体、 侧腔通道的截面图;
图 4是图 2所示缸体的左视图;
图 5是沿图 3的 A-A线的截面图;
图 6是沿图 3的 B-B线的截面图;
图 7示意地表示图 1所示侧腔通道的金属焊接密封结构; 图 8是表示本发明的冲击器功率传递机构的剖面图;
图 9是沿图 8的 A'-A'线的截面图;
图 10是沿图 8的 B'-B'线的截面图;
图 11是表示根据本发明的上分流压盖的截面图;
图 12是表示一个单独喷嘴的截面图;
图 13以截面图表示装有该喷嘴的上分流压盖。 具体实施方式
以下, 结合附图来详细描述本发明的液动射流式冲击器的实施形 式。 在这里, 具有与表示现有技术的图 1 相同的功能的部件或部分用 同一标记来表示并且将不再进行描述了。
为了提供一种能够克服单次使用寿命短的问题的液动射流式冲击 器, 根据本发明的笫一方面, 对液动射流式冲击器的主密封进行了改 进, 而在其它方面, 该液动射流式冲击器可以具有和如 CN2385068Y 所述冲击器一样的结构或特征, 或者也可以采用以下要描述的本发明 其它方面的改进特征或结构。 因此, 在根据本发明第一方面的液动射 流式冲击器中, 仅描述与主密封相关的部分或部件。
根据本发明笫一方面, 一个液动射流式冲击器包括一个外筒 2、 一有多个流出孔 90的射流元件 9、 一个缸体 10、 一个上分流压盖 8、 一设置于该缸体内腔中的活塞 11、 一个活塞杆 12 和一中央开孔的下 缸盖 13 以及一冲击锤 14和一个冲击器功率传递机构, 该活塞将缸体 内腔分成的一上腔 15和一下腔 16。 缸体 10在其局部外周壁处开设有 一奈将射流元件 9的其中一个流出孔 90与下腔 16流体连通起来的侧 腔通道 17 , 在这个实施例中, 该侧腔通道是如此形成于缸体外周壁处 的, 即在缸体外周面上掏出一个横截面大致成 C形的但对外筒内壁面 是封闭的槽, 即该侧腔通道与外筒 2 的内壁面是密封隔绝的, 因此, 在侧腔通道 17 中的工作液体无法接触到外筒内壁面, 这种密封隔绝 是如此做到的, 即从外面用一块与掏槽边缘的轮廓吻合的圓弧状金属 片将掏槽烊接密封起来, 从而出现呈在缸体外壁内的一轴向通道形式 的侧腔通道, 因此, 由于外筒内壁面不再象在 CN2385068Y 中那样构 成该侧腔通道的界面并因而不再需要在外筒内壁面与缸体外周面之间 设置相应的 O形橡胶密封圈, 所以避免了因钻井液流速过高而产生旋 流或涡流并直接冲蚀主密封而出现主密封过早老化或损坏的问题, 并 且由于采用了比橡胶密封更耐磨的金属材料, 所以主密封部的耐磨性 更强, 因而, 液动射流式冲击器的单次使用寿命得到显著提高。 根据 实验, 本发明的液动射流式冲击器的单次使用寿命达到了 70-80 个小 时。
• 当然, 侧腔通道 17 的形成方式或其结构可以不局限于上述方案。 根据本发明的一个实施例, 侧腔通道 17 可以通过铸造加工等方式形 成于缸体的外周壁内, 即缸体本身的外周壁就构成侧腔通道 17 的界 面。 由这个实施例的带来的优点是, 由于更容易制造侧腔通道, 所以 降低了生产成本。
此外, 才艮据本发明的其它实施例, 如图 2 所示, 除了在上述主密 封处的改进外, 在射流元件 9 与缸体 10 上的上分流压盖之间, 还可 以用一个表面光滑的金属配合密封垫片进行轴向压紧密封。 根据另一 个实施例, 除了在上述主密封的改进外, 在下缸盖 13 的中央开孔内 镶嵌有一个铜套 18, 它紧密围绕活塞杆 12 , 在活塞杆上下运动并带 动冲击锤作沖击运动时, 由于该铜套与活塞杆密封配合, 所以杜绝了 泥浆沿活塞杆渗流冲蚀沖击锤的现象的发生。
为提供一种能够改善冲击能传递效率的冲击器功率传递机构, 根 据本发明的笫二方面, 它包括: 一个呈内多方形的多方套, 它通过其 上端与一外管连接而被安置在该外管中; 一个呈外多方形的砧子, 它 可滑动地被套装在多方套的内多方中, 在所述砧子的顶端面上开设有 一个以上的流体通道, 这些流体通道与砧子内部的一条中空通道连 通, 其中在该砧子的下端如此开设有一个攻有母螺紋的并用于安装一 个带有公螺纹的工具的孔, 即所述孔与该中空通道是流体连通的, 从 而钻井液可经过所述流体通道、 该中空通道流向安装在该孔中的工 具, 所述工具可以是钻头、 取芯管等。 如此设计冲击器功率传递机构 的出发点是, 根据有关波动理论, 冲击应力波通过界面会产生反射, 使能量损失约 20%, 而且应力波的衰减幅度与传递距离近似成正比。 为了解决功率传递效率低的问题, 本设计人基于以上理论, 从减少传 递部件和尽量缩短传递距离考虑, 对传递机构进行了重大改进, 将现 有技术中的砧子与下接头合二为一并相应缩短了多方套, 从而增加了 能量传递效率。 因此, 当砧子和下接头合二为一时, 冲击应力波传递 过程中少经过一个螺紋界面, 冲击能传递效率可提高 20%, 由于多方 套缩短而使传递距离缩短, 从而使传递效率也提高约 20%, 与原结构 相比, 冲击能的传递效率将提高 40%以上。
为了提供一种能够不用更换整块上分流压盖并由此降低了上分流 压盖的运营成本并提高工作效率的液动射流式冲击器, 根据本发明的 笫三方面, 如图 1 1-图 13所示, 一个液动射流式冲击器包括一个外筒 2、 一有多个流出孔 90的射流元件 9、 一个缸体 10、 一个上分流压盖 8、 一设置于该缸体内腔中的活塞 11、 一个活塞杆 12和一中央开孔的 下缸盖 13 以及一冲击锤 14和一个冲击器功率传递机构, 其中在上分 流压盖 8的分流孔中, 可更换地安装有一个喷嘴 21, 其中该喷嘴是一 系列具有不同内孔径尺寸的喷嘴中的一个。 所述喷嘴的喷孔的出口内 径为 H, 其入口内径为 L, 在这里, 0<H < L。 所述喷嘴是用材料硬度 HRC 值至少是上分流压盖材料硬度的约两倍的合金钢制成的, 即由 HRO60 的合金钢如 YG8、 YG11 等硬质合金钢制成的, 因此, 它们 具有比上分流压盖更高的耐磨性能。 针对不同的流量, 可以在同一个 上分流压盖的分流孔中装上内孔径不同的喷嘴, 以满足不同流量的需 要。 所述喷嘴被固定在分流孔中的固定方式没有特殊限制, 只要能够 方便取下并更换喷嘴就行, 例如可以通过卡簧 22 或销子把所述喷嘴 固定在分流孔中。 借助利用喷嘴的分流方式, 可以大大提高分流孔的 耐冲蚀性并延长分流孔的寿命, 同时, 可以很方便地更换喷嘴, 来满 足不同流量的需要。
此外, 根据本发明第四方面, 为了提供一种通过改进冲击器功率 传递机构来提高冲击能传递效率并由此提高钻进速度的液动射流式冲 击器, 该液动射流式冲击器包括一个外筒 2、 一有多个流出孔 90的射 流元件 9、 一个缸体 10、 一个上分流压盖 8、 一设置于该缸体内腔中 的活塞 11、 一个活塞杆 12和一中央开孔的下缸盖 13以及一冲击锤 14 和一个冲击器功率传递机构, 该冲击器功率传递机构包括: 一个呈内 多方形的多方套 5, 它通过其上端的公螺紋与一外管 4 的下端母螺紋 连接而被安置在该外管中; 一个呈外多方形的砧子 6 , 它可滑动地被 装配在多方套 5 的内多方, 在所述砧子的顶端面上开设有一个以上的 流体通道, 这些流体通道与砧子内部的一条中空通道连通, 在该砧子 的下端如此开设有一个攻有母螺紋的并用于安装一个带有公螺纹的工 具的孔, 即所述孔与该中空通道是流体连通的, 从而钻井液可经过所 述流体通道、 该中空通道流向安装在该孔中的工具。 与 CN2385068Y 中的冲击器功率传递机构相比, 下接头被省掉了, 由此一来, 如上所 述地, 根据有关的波动理论, 由于减少了功率传递部件, 所以减少了 冲击应力波传递损失并由此提高了冲击能传递效率。
此外, 在本发明的第二方面和 /或笫四方面中, 根据另一个实施例, 除了象上述那样使原来的砧子和下接头合二为一的措施外, 本发明还 采取了一项新的措施, 即在砧子的上部设有一个开口套 19 , 该开口套 为两个半圆形的卡块, 它们箍在砧子 6上部上并且与外管 4形成间隙 配合。 开口套 19的工作过程是这样的: 冲击银 14下行撞击砧子 6并 将冲击应力波传递给工具如钻头, 而多方套 5 在钻进过程中起到了扭 矩传输的作用, 当钻具提离井底时, 由多方套 5控制砧子 6 的轴向位 移, 钻头和砧子 5 自动下滑, 直至开口套 19 坐在多方套 5 的上端面 上, 同时, 活塞 11 和冲击锤 14也随之下滑, 从而使动力机构停止工 作, 由此实现了防止空打。 开口套 19 起到固定、 防护、 避免打击使 外管损坏变形的作用。 此外, 与 CN2385068Y—样地, 砧子 5的顶端 可以呈圓台状或其它形状如蘑菇头状, 并且在该顶端的表面上均匀分 布有四条流体通道, 它们与砧子内部的一条中空通道连通。 此外, 砧 子与多方套之间用橡胶密封圈 20 进行密封。 另外, 外表面紧靠顶端 的砧子上部为中空圆柱形, 砧子中下部呈与多方套的内多方配合的中 空外多方形状, 砧子最下部呈带有所述孔的圆柱形。 根据另一个实施 例, 多方套的内多方和砧子下部的外多方最好为正 n边形, 其中 n为 3-10 并优选为 8。 另外, 多方套的内多方的长度与其横截面多方形外 接圆的直径之比为 0.7-1.1 , 优选地是 0.8-1.0。 此外, 该砧子的顶端圆 台的坡度为 25° -75° 并最好为 45° -75° 。
尽管结合附图描述了本发明的以上四个方面, 但显然可以在不超 出本申请的发明构思的精神和范围的前提下对本申请进行各种修改和 组合。
例如, 根据本发明的一个实施例, 液动射流式冲击器包括一个外 筒 2、 一有多个流出孔 90的射流元件 9、 一个缸体 10、 一个上分流压 盖 8、 一设置于该缸体内腔中的活塞 1 1、 一个活塞杆 12 和一中央开 孔的下缸盖 13 以及一冲击锤 14和一个冲击器功率传递机构, 该活塞 将缸体内腔分成的一上腔 15和一下腔 16。 缸体 10在其局部外周壁处 开设有一条将射流元件 9的其中一个流出孔 90与下腔 16流体连通起 来的侧腔通道 17 , 在这个实施例中, 该侧腔通道是如此形成于缸体外 周壁处的, 即在缸体外周面上掏出一个横截面大致成 C形的但对外筒 内壁面是封闭的槽, 即该侧腔通道相对外筒 2的内壁面是密封隔绝的, 而且, 该冲击器功率传递机构包括: 一个呈内多方形的多方套 5, 它 通过其上端的公螺纹与一外管 4 的下端母螺纹连接而被安置在该外管 中; 一个呈外多方形的砧子 6 , 它可滑动地被装配在多方套 5 的内多 方, 在所述砧子的顶端面上开设有一个以上的流体通道, 这些流体通 道与该砧子内部的一条中空通道连通, 在该砧子的下端如此开设有一 个攻有母螺紋的并用于安装一个带有公螺纹的工具的孔, 即所述孔与 该中空通道是流体连通的, 从而钻井液可经过所述流体通道、 该中空 通道流向安装在该孔中的工具。 这个实施例的优点在于, 在改进主密 封的同时, 又提高了冲击能传递效率, 从而提高了工作效率。
根据本发明的又一个实施例, 液动射流式冲击器包括一个外筒 2、 一有多个流出孔 90的射流元件 9、 一个缸体 10、 一个上分流压盖 8、 一设置于该缸体内腔中的活塞 1 1、 一个活塞杆 12 和一中央开孔的下 缸盖 13 以及一冲击锤 14和一个冲击器功率传递机构, 该活塞将缸体 内腔分成的一上腔 15和一下腔 16。 缸体 10在其局部外周壁处开设有 一条将射流元件 9的其中一个流出孔 90与下腔 16流体连通起来的侧 腔通道 17 , 在这个实施例中, 该侧腔通道是如此形成于缸体外周壁处 的, 即在缸体外周面上掏出一个横截面大致成 C形的但对外筒内壁面 是封闭的槽, 即该侧腔通道相对外筒 2 的内壁面是密封隔绝的, 其中 在上分流压盖 8的分流孔中, 可更换地安装有一个喷嘴 21 , 该喷嘴是 一系列具有不同内孔径尺寸的喷嘴中的一个, 而且所述喷嘴是用材料 硬度 HRC 值至少是上分流压盖材料硬度的约两倍的合金钢制成的。 这个实施例带来的优点是, 在改善主密封的使用寿命的同时, 延长了 分流孔使用寿命并能够通过更换上有不同孔径的喷嘴而使上分流压盖 适应不同流量的需要。
根据本发明的另一个实施例, 一个液动射流式冲击器包括一个外 筒 2、 一有多个流出孔 90的射流元件 9、 一个缸体 10、 一个上分流压 盖 8、 一设置于该缸体内腔中的活塞 11、 一个活塞杆 12 和一中央开 孔的下缸盖 13 以及一冲击锤 14和一个冲击器功率传递机构, 该冲击 器功率传递机构包括: 一个呈内多方形的多方套 5 , 它通过其上端的 公螺紋与一外管 4 的下端母螺纹连接而被安置在该外管中; 一个呈外 多方形的砧子 6 , 它可滑动地被装配在多方套 5 的内多方, 在所述砧 子的顶端面上开设有一个以上的流体通道, 这些流体通道与该砧子内 部的一奈中空通道连通, 在该砧子的下端如此开设有一个攻有母螺紋 的并用于安装一个带有公螺紋的工具的孔, 即所述孔与该中空通道是 流体连通的, 从而钻井液可经过所述流体通道、 该中空通道流向安装 在该孔中的工具。 此外, 在上分流压盖 8 的分流孔中, 可更换地安装 有一个喷嘴 21, 该喷嘴是一系列具有不同内孔径尺寸的喷嘴中的一 个, 而且所述喷嘴是用材料硬度 HRC 值至少是上分流压盖材料硬度 的约两倍的合金钢制成的。 这个实施例带来的优点是, 延长长分流孔 的使用寿命并能够通过更换上有不同孔径的喷嘴而使上分流压盖适应 不同流量的需要, 提高了冲击能传递效率, 由此提高了工作效率。
根据本发明的一个优选实施例, 一个液动射流式沖击器包括一个 外筒 2、 一有多个流出孔 90的射流元件 9、 一个缸体 10、 一个上分流 压盖 8、 一设置于该缸体内腔中的活塞 1 1、 一个活塞杆 12 和一中央 开孔的下缸盖 13 以及一冲击锤 14和一个冲击器功率传递机构, 该沖 击器功率传递机构包括: 一个呈内多方形的多方套 5 , 它通过其上端 的公螺紋与一外管 4 的下端母螺紋连接而被安置在该外管中; 一个呈 外多方形的砧子 6 , 它可滑动地被装配在多方套 5 的内多方, 在所述 砧子的顶端面上开设有一个以上的流体通道, 这些流体通道与该砧子 内部的一条中空通道连通, 在该砧子的下端如此开设有一个攻有母螺 紋的并用于安装一个带有公螺紋的工具的孔, 即所迷孔与该中空通道 是流体连通的, 从而钻井液可经过所述流体通道、 该中空通道流向安 装在该孔中的工具。 在上分流压盖 8 的分流孔中, 可更换地安装有一 个喷嘴 21 , 该喷嘴是一系列具有不同内孔径尺寸的喷嘴中的一个, 而 且所述喷嘴是用材料硬度 HRC 值至少是上分流压盖材料硬度的约两 倍的合金钢制成的。 在这个实施例中, 该侧腔通道是如此形成于缸体 外周壁处的, 即在缸体外周面上掏出一个横截面大致成 C形的但对外 筒内壁面是封闭的槽, 即该侧腔通道相对外筒 2 的内壁面是密封隔绝 的。 这个实施例的优点是, 在延长了主密封和分流孔的使用寿命的同 时, 能够通过更换上有不同孔径的喷嘴而使上分流压盖适应不同流量 的需要并且能够提高冲击能传递效率, 由此提高了工作效率。
此外, 根据本发明的笫五方面, 提供了将本发明的液动射流式冲 击器用于钻探硬脆性破碎性地层的用途, 所述地层的岩性为, 其硬度 值为 5 级以上并且其抗压强度为 150MPa并且岩石可钻性极值为 5级 以上。 由于本发明的液动射流式冲击器具有更强的冲击能传递效果以 及出色的单次使用寿命, 所以它特别适用于具有上述岩性的地层。 工业实用性
本发明的液动射流式冲击器特别适用的范围包括所有石油旋冲钻 井、 地质岩芯冲击回转钻探等应用冲击器的领域。 本发明的冲击器功 率传递机构可被用于射流式沖击器、 正作用式冲击器、 反作用式冲击 器、 阀式双作用冲击器、 射吸式冲击器等各种冲击器。

Claims

权 利 要 求
1. 一种液动射流式冲击器, 它包括一个外筒 (2) 、 一个装在该 外筒中并有多个流出孔 (90 ) 的射流元件 (9 ) 、 一个装在该外筒中 的并有一内腔的缸体 ( 10) 、 一个有多个分流孔的上分流压盖 (S) 、 一将该缸体内腔分成一上腔 (15) 和一下腔 ( 16) 地设置于该缸体内 腔中的活塞 ( 11 ) 、 一个与该活塞相连的活塞杆 ( 12) 、 一个中央开 孔的下缸盖 ( 13 ) 以及一个与该活塞杆相连的冲击锤 ( 14) 和一个冲 击器功率传递机构, 其中该缸体在其外周壁处开设有一条使该射流元 件的其中一个流出孔与下腔 (16) 连通的侧腔通道( 17) , 其特征在 于, 侧腔通道 ( 17 )是如此成形于所述缸体的外周壁处的, 即该侧腔 通道相对所述外筒的内壁面被不透液地密封隔绝开。
2. 根据权利要求 1 所述的液动射流式冲击器, 其特征在于, 侧腔 通道 ( 17) 是如此成形于所述缸体的外周壁处的, 即该缸体的外周面 被掏出一个横截面大致成 C形的槽并且所述槽从外面用一块与该掬槽 的边缘的轮廓吻合的圆弧状金属片被焊接密封起来。
3. 根据权利要求 1 所述的液动射流式冲击器, 其特征在于, 侧腔 通道 ( 17 ) 通过铸造成形于该缸体的外周壁内, 从而所迷缸体本身的 外周壁构成该侧腔通道的界面。
4. 根据权利要求 1-3之一所述的液动射流式冲击器, 其特征在于, 在射流元件 ( 1 ) 与缸体 (2) 的上分流压盖 (3 ) 之间, 设有一个用 于轴向压紧密封的金属配合密封垫片。
5. 根据权利要求 1-3之一所述的液动射流式冲击器, 其特征在于, 在下缸盖 ( 12) 的中央开孔内, 镶嵌有一个紧密围绕活塞杆 ( 5 ) 的 铜套 ( 13) 。
6. 根据权利要求 1-3之一所述的液动射流式冲击器, 其特征在于, 该冲击器功率传递机构包括: 一个呈内多方形的多方套 (5 ) , 它通 过其上端的公螺紋与一外管 (4 ) 的下端母螺纹连接而被安置在该外 管中; 一个呈外多方形的砧子 (6) , 它可滑动地被装配在多方套(5) 的内多方, 在所述砧子的顶端面上开设有一个以上的流体通道, 这些 流体通道与该砧子内部的一条中空通道连通, 在该砧子的下端如此开 设有一个攻有母螺纹的并用于安装一个带有公螺纹的工具的孔, 即所 述孔与该中空通道是流体连通的, 从而钻井液可经过所述流体通道、 该中空通道流向安装在该孔中的工具。
7. 根据权利要求 1 -3之一所述的液动射流式冲击器, 其特征在于, 在上分流压盖 (8 ) 的分流孔中, 可更换地安装有一个喷嘴 (21 ) , 该喷嘴是一系列具有不同内孔径尺寸的喷嘴中的一个并且是用材料硬 度值 HRC至少约是该上分流压盖的材料硬度的两倍的合金钢制成的。
8. 根据权利要求 6所述的液动射流式冲击器, 其特征在于, 在上 分流压盖 (8 ) 的分流孔中, 可更换地安装有一个喷嘴 (21 ) , 该喷 嘴是一系列具有不同内孔径尺寸的喷嘴中的一个并且是用材料硬度值 HRC至少约是该上分流压盖的材料硬度的两倍的合金钢制成的。
9. 根据权利要求 7所述的液动射流式冲击器, 其特征在于, 所述 喷嘴通过卡箍被安装在该分流孔内。
10. 根据权利要求 7 所述的液动射流式冲击器, 其特征在于, 所 述喷嘴的喷孔的出口内径为 H, 其入口内径为 L, 其中 0<H ;
11. 一种冲击器功率传递机构, 它包括: 一个呈内多方形的多方 套 (5 ) , 它通过其上端与一外管 (4 ) 连接而被安置在该外管中; 一 个呈外多方形的砧子 (6 ) , 它可滑动地被套装在多方套 (5 ) 的内多 方中, 在所述砧子的顶端面上开设有一个以上的流体通道, 这些流体 通道与该砧子内部的一条中空通道连通, 其特征在于, 在该砧子的下 端如此开设有一个攻有母螺紋的并用于安装一个带有公螺紋的工具的 孔, 即所述孔与该中空通道是流体连通的, 从而钻井液可经过所述流 体通道、 该中空通道流向安装在该孔中的工具。
12. 根据权利要求 11 所述的冲击器功率传递机构, 其特征在于, 所述砧子的顶端面呈圆台状, 其外表面紧靠顶端的上部为中空圓柱 形, 其中下部呈与多方套 (5 ) 的内多方配合的中空外多方形状, 其 最下部呈带有所述孔的圆柱形, 并且多方套 (5 ) 上端与外管 (4 ) 的 连接是螺纹连接。
13. 根据权利要求 11 所述的冲击器功率传递机构, 其特征在于, 在所述砧子的上部卡设有一个开口套 ( 19 ) , 它由两个半圆形卡块构 成并且与外管 (4 ) 形成间隙配合。
14. 根据权利要求 11-13 之一所述的冲击器功率传递机构, 其特 征在于, 多方套 (5 ) 的内多方和砧子 (6 ) 下部的外多方为正 n边形, 其中 n为 3-10。
15. 根据权利要求 11-13 之一所述的冲击器功率传递机构, 其特 征在于, 多方套 (6) 的内多方的长度与其横截面多方形外接圆的直 径之比为 0.7-1.1。
16. 根据权利要求 11-13 之一所述的冲击器功率传递机构, 其特 征在于, 多方套 (6) 为内八方, 砧子 (5) 的中下部为外八方。
17. 根据权利要求 11-13 之一所述的冲击器功率传递机构, 其特 征在于, 砧子 (5) 的顶端圆台的坡度为 25° -75° 。
18. 根据权利要求 11-13 之一所述的冲击器功率传递机构, 其特 征在于, 所述流体通道是四条。
19. 根据权利要求 11 所述的冲击器功率传递机构, 其特征在于, 在多方套 (5 ) 和开口套 ( 19) 之间有一个水平环形空隙, 如此形成 一个防空打机构, 即通过多方套 ( 5) 来控制砧子 (6) 轴向位移, 所 述工具和砧子 ( 5 ) 自动下滑并且一冲击锤也下滑, 从而使动力机构 停止工作并由此防止该冲击锤在该工具悬空时冲击所述砧子。
20. 根据权利要求 12所述的冲击器功率传递机构, 其特征在于, 砧子 (6 ) 的顶端圆台的坡度为 45° -75° , 多方套 (5) 的内多方的 长度与其横截面正多方形外接圆的直径之比为 0.8-1.0。
21. 一种液动射流式冲击器, 它包括一个外筒 (2) 、 一个装在该 外筒中并有多个流出孔 (90) 的射流元件 (9) 、 一个装在该外筒中 的并有一内腔的缸体 ( 10 ) 、 一个有多个分流孔的上分流压盖 (8) 、 一将该缸体内腔分成一上腔 (15) 和一下腔 ( 16) 地设置于该缸体内 腔中的活塞 ( 11 ) 、 一个与该活塞相连的活塞杆 ( 12) 、 一个中央开 孔的下缸盖 ( 13 ) 以及一个与该活塞杆相连的冲击锤 ( 14) 和一个冲 击器功率传递机构, 其中该缸体在其外周壁处开设有一条使该射流元 件的其中一个流出孔与下腔 (16) 连通的侧腔通道 ( 17) , 其特征在 于, 该冲击器功率传递机构是如权利要求 11-20 之一所迷的冲击器功 率传递机构。
22. 如权利要求 21 所述的液动射流式冲击器, 其特征在于, 在上 分流压盖 (8 ) 的分流孔中, 可更换地安装有一个喷嘴 (21 ) , 该喷 嘴是一系列具有不同内孔径尺寸的喷嘴中的一个并且是用材料硬度值 HRC至少约是该上分流压盖的材料硬度的两倍的合金钢制成的。
23. 根据权利要求 22所述的液动射流式冲击器, 其特征在于, 所 述喷嘴通过卡箍被安装在该分流孔内。
24. 根据权利要求 22所述的液动射流式冲击器, 其特征在于, 所 迷喷嘴的喷孔的出口内径为 H, 其入口内径为 L, 其中 0<H<L。
25. 一种液动射流式冲击器, 它包括一个外筒 (2) 、 一个装在该 外筒中并有多个流出孔 (90) 的射流元件 (9) 、 一个装在该外筒中 的并有一内腔的缸体 ( 10) 、 一个有多个分流孔的上分流压盖 (8) 、 一将该缸体内腔分成一上腔 (15) 和一下腔 (16) 地设置于该缸体内 腔中的活塞 ( 11 ) 、 一个与该活塞相连的活塞杆 ( 12) 、 一个中央开 孔的下缸盖 ( 13) 以及一个与该活塞杆相连的冲击锤 (14) 和一个冲 击器功率传递机构, 其中该缸体在其外周壁处开设有一条使该射流元 件的其中一个流出孔与下腔 (16) 连通的侧腔通道(17) , 其特征在 于, 在上分流压盖(8)的分流孔中, 可更换地安装有一个喷嘴(21), 该喷嘴是一系列具有不同内孔径尺寸的喷嘴中的一个并且是用材料硬 度值 HRC至少约是该上分流压盖的材料硬度的两倍的合金钢制成的。
26. 根据权利要求 25所述的液动射流式冲击器, 其特征在于, 所 述喷嘴通过卡箍被安装在该分流孔内。
27. 根据权利要求 25所述的液动射流式冲击器, 其特征在于, 所 述喷嘴的喷孔的出口内径为 H, 其入口内径为 L, 其中 0<H《L。
28. 将根据权利要求 1-10和 21-27之一所述的液动射流式冲击器 用于钻探硬脆性破碎性地层的用途, 所述地层的岩性为, 硬度值为 5 级以上, 抗压强度为 150MPa并且岩石可钻性极值为 5级以上。
PCT/CN2003/000027 2002-01-14 2003-01-14 Module de transmission d'energie d'un impacteur, impacteur a jet hydraulique, et application correspondante WO2003058023A1 (fr)

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CN2385068Y (zh) * 1998-05-15 2000-06-28 长春科技大学 深井钻孔液动射流式冲击器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7426965B2 (en) 2002-01-14 2008-09-23 China Petroleum & Chemical Corporation Power transmission unit of an impactor, a hydraulic jet impactor and the application thereof
CN104612583A (zh) * 2015-01-28 2015-05-13 中国地质科学院勘探技术研究所 液动锤分流机构、液动锤以及井下钻探装置

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RU2004123611A (ru) 2006-01-20
DE10392218T5 (de) 2005-08-25
DE10392218B4 (de) 2013-07-18
US20060011362A1 (en) 2006-01-19
AU2003207096A1 (en) 2003-07-24
RU2317395C2 (ru) 2008-02-20
CA2458124A1 (en) 2003-07-17
CA2458124C (en) 2011-03-08
US7426965B2 (en) 2008-09-23
NO20043382L (no) 2004-08-13
NO330004B1 (no) 2011-02-07
WO2003058023A8 (fr) 2004-02-12

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