A mechanical hydraulic jar

Abstract

The present invention provides a mechanical hydraulic jar, which relates to the technical field of drilling jars, and comprises a joint balance pipe group, an energy storage pipe group and a reset jarring pipe group, wherein the joint balance pipe group, the energy storage pipe group and the reset jarring pipe group are connected end to end in sequence; the present invention connects the connecting pipeline on the ground through a joint threaded pipe, then outputs the oil pressure to the jarring connecting pipe through an oil pressure output valve, and transmits the oil pressure to the lower end through the jarring connecting pipe, wherein the hole on the side of the jarring connecting pipe passes through the jarring core upper casing and is connected to the inside of a pressure relief chamber, so that the backwash pressure caused by the rapid backflow of the oil pressure during the jarring can be reduced, and the backwash pressure discharged into the pressure relief chamber is absorbed by the balancing sliding spring at the rear end of the balancing sliding spring plug, thereby achieving a hydraulic balance effect.

Description

Technical Field

[0001] The invention relates to the technical field of drilling jars, in particular to a mechanical hydraulic jar. Background Art

[0002] The main types of jars are: drilling jars, salvage jars and ground jars. When the drill string is stretched elastically under tension, it can store elastic energy to produce a jarring effect. It can be used to deal with drill bit jams and is conducive to safe drilling. In drilling operations, the hardness of the rock formation and the geological distribution boundary are not cleaned when drilling the rock formation, which may cause the drill bit to get stuck. At this time, a salvage jar is needed to release the stuck jar, such as a hydraulic mechanical drilling jar with application number CN201010224934.5. In the above-mentioned technical solution for salvage jarring, it relies solely on the jarring effect in a single direction. If the drill bit is stuck in the rock formation and is opposite to the jarring direction, the jarring in a single direction will not only fail to release the drill bit, but will be damaged by repeated jarring, resulting in the scrapping of the drilling and the inability to continue the operation. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a mechanical hydraulic jar to solve the problems raised in the background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a mechanical hydraulic jar, comprising a joint balance pipe group, an energy storage pipe group and a reset jar pipe group, wherein the joint balance pipe group, the energy storage pipe group and the reset jar pipe group are connected end to end in sequence;

[0005] The joint balance pipe group includes: a hydraulic joint control pipe, a balance pipe housing, a joint pipe groove, a joint threaded pipe, and a hydraulic output valve. The upper end of the hydraulic joint control pipe is integrally provided with a joint threaded pipe, a joint pipe groove is provided inside the joint threaded pipe, a hydraulic output valve is fixedly installed at the bottom of the joint pipe groove, and the rear end of the hydraulic joint control pipe is connected to the balance pipe housing;

[0006] The energy storage tube group comprises: an energy storage tube shell, a lower casing front sealing sleeve, and a shock through-core lower casing. The lower end of the shock through-core upper casing is integrally provided with a shock through-core lower casing, the upper end of the shock through-core lower casing is sleeved with a lower casing front sealing sleeve, and the outer ring of the lower casing front sealing sleeve is sleeved with an energy storage tube shell;

[0007] The reset shock tube group includes: a reset tube shell, a reset tube sealing base, a sealing base fixing clamp ring, and a hydraulic reset spring seat. The lower end of the lower connecting tube sleeve is integrally provided with a shock tube head, the upper end of the shock tube head is sleeved with a reset tube sealing base, the outer end of the reset tube sealing base is sleeved with a reset tube shell, the outer end of the reset tube sealing base is located on the inner wall bracket of the upper end of the reset tube shell and is provided with a sealing base fixing clamp ring, and the outer end of the shock tube head and located inside the reset tube shell is sleeved with a hydraulic reset spring seat.

[0008] Preferably, a driving oil pressure chamber is provided at the rear end of the oil pressure output valve, a pressure relief chamber is provided in the balancing tube housing, a shock through-core upper sleeve is provided in the pressure relief chamber, a balancing sliding spring plug is provided on the shock through-core upper sleeve, a balancing sliding spring is provided on the shock through-core upper sleeve and at the lower end of the balancing sliding spring plug, a spring base ring is provided at the rear end of the balancing sliding spring, a balancing tube fixed bottom plug is provided at the rear end of the spring base ring, and a balancing tube fixed bottom tube seat is provided at the rear end of the balancing tube fixed bottom plug.

[0009] Preferably, a shock connecting pipe is provided inside the shock-through upper casing.

[0010] Preferably, an energy storage spring base is fixedly sleeved at the lower end of the shock through-core lower casing, and an energy storage spring is sleeved on the shock through-core lower casing and between the front sealing sleeve of the lower casing and the energy storage spring base.

[0011] Preferably, the shock through-core lower casing and the lower end of the energy storage spring base are provided with an energy storage tube sealing base, an energy storage tube clamping ring is provided between the outer ring of the energy storage tube sealing base and the inner wall of the lower end of the energy storage tube shell, and a lower connecting pipe sleeve is provided at the lower end of the energy storage tube sealing base;

[0012] An oil pressure connecting shock pipe is arranged in the lower connecting pipe sleeve, the shock through-core lower sleeve and the energy storage pipe sealing base.

[0013] Preferably, a return buffer spring is arranged between the hydraulic return spring seat and the return tube sealing base, and a return retaliatory protection spring is arranged at the rear end of the hydraulic return spring seat.

[0014] Preferably, a shock platform ring is integrated on the inner wall of the reset tube shell, a protective spring rear sealing seat is provided on the upper end of the shock platform ring, an oil pressure pushing bucket is provided on the lower end of the shock tube head, the oil pressure connecting shock tube passes through the shock tube head and the oil pressure pushing bucket, and a pressure control valve is fixedly installed on the lower end of the oil pressure connecting shock tube.

[0015] Preferably, a tube shell connecting sealing ring is provided at the lower end of the reset tube shell, a shock tube shell is provided at the lower end of the tube shell connecting sealing ring, a circuit oil chamber is opened inside the shock tube shell, a secondary shock valve assembly is fixedly installed in the circuit oil chamber, a lower drill bit connecting pipe head is provided at the lower end of the shock tube shell, a plug sealing ring is provided between the lower end of the shock tube shell and the lower drill bit connecting pipe head, and an oil chamber plug is fixedly installed at the upper end of the plug sealing ring and located in the circuit oil chamber.

[0016] Preferably, the secondary shock valve assembly comprises: a secondary shock valve top plate, a check valve, a secondary shock chamber, a secondary shock shock core, a secondary shock pressure relief groove, an oil pressure injection pipe, a secondary shock cavity, an inertial secondary shock hammer, a secondary shock spring plate, a secondary shock reset spring, and a check valve cover;

[0017] A secondary shock valve top plate is fixedly installed on the inner wall of the circuit oil chamber, two check valves with opposite check directions are fixedly installed on the secondary shock valve top plate, a check valve cover is fixedly installed in each check valve, wherein a secondary shock chamber is integrated at the lower end of the middle check valve, a secondary shock core is slidably arranged in the secondary shock chamber, a secondary shock pressure relief groove is opened at one end of the secondary shock core, and an oil pressure injection pipe is opened in the secondary shock pressure relief groove;

[0018] A secondary shock cavity is also provided in the secondary shock core, and an inertial secondary shock hammer is movably arranged in the secondary shock cavity. A secondary shock spring plate is integrally arranged at one end of the secondary shock cavity away from the secondary shock pressure relief groove, and a secondary shock reset spring is arranged between the inner side of the secondary shock spring plate and the secondary shock core.

[0019] Preferably, both ends of the through groove of the secondary shock pressure relief groove are arranged outside the inner wall of the check valve through pipe, and the upper end of the oil pressure injection pipe faces the check valve cover.

[0020] The present invention provides a mechanical hydraulic jar having the following beneficial effects:

[0021] 1. The present invention connects the connecting pipes on the ground through the joint threaded pipe, then outputs the oil pressure to the shock connecting pipe through the oil pressure output valve, and transmits the oil pressure to the lower end through the shock connecting pipe, wherein the shock connecting pipe is connected to the inside of the pressure relief chamber through the hole on the side of the shock connecting pipe through the shock through the upper casing, so as to reduce the backwash pressure caused by the rapid backflow of the oil pressure during the shock, and the backwash pressure discharged into the pressure relief chamber is absorbed by the balance sliding spring at the rear end of the balance sliding spring plug, thereby achieving the effect of hydraulic balance;

[0022] 2. The present invention connects the oil pressure to the oil pressure connecting shock pipe through the shock connecting pipe at the upper end, and then presses the oil into the gap between the energy storage spring base and the energy storage pipe sealing base through the oil hole on the side of the oil pressure connecting shock pipe, so that the energy storage spring base can be pushed to squeeze the energy storage spring, and the shock through-core lower casing can be pushed to push the energy storage pipe shell to the lower end, so that it can serve as an auxiliary shock acceleration when the lower end shocks upward, thereby increasing the shock effect;

[0023] 3. The present invention communicates the oil pressure in the shock pipe to the front end of the pressure control valve through the oil pressure, and communicates the oil pressure to the shock pipe head and the shock table ring through the oil hole on the inner wall. The gap between the two is gradually closed by the oil pressure, and the reset buffer spring is squeezed. When the shock pipe head reaches the oil pressure pushing bucket, the oil pressure is released from the side oil hole at the bottom of the oil pressure connected shock pipe, and the internal support of the oil pressure is lost. The shock pipe head slides back suddenly, and when its head end is exposed to the oil hole again, the oil pressure is restored, and the sudden sliding stops, achieving the shock effect;

[0024] 4. When the shock pipe head of the present invention is reset at a relatively slow speed relative to the shock, the oil pressure passes through the secondary shock valve assembly along the constant pressure of the pressure control valve, and the secondary shock valve assembly vibrates in a direction perpendicular to the shock, thereby enabling the stuck drill bit to vibrate in the vertical direction to release the rock structure that is stuck with it;

[0025] The oil pressure is connected downward through the check valve cover, enters the oil pressure injection pipe, and gradually enters the sealed cavity on one side of the secondary shock pressure relief groove, and squeezes the secondary shock reset spring by moving the secondary shock core to one side. When the secondary shock pressure relief groove is exposed inside the inner wall of the lower tube of the check valve, the inside and outside lose pressure and are suddenly pushed back by the secondary shock reset spring. The inertial secondary shock hammer strikes again due to inertia, thereby achieving the effect of lateral shock, accelerating the speed of unblocking, and increasing the efficiency of unblocking. When the main shock occurs, it flows back from the other check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the joint balance pipe group in the present invention;

[0028] Figure 3 It is a side view structural schematic diagram of the joint balance pipe group in the present invention;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure along line aa;

[0030] Figure 5 It is a structural schematic diagram of the energy storage tube group in the present invention;

[0031] Figure 6It is a side view structural schematic diagram of the energy storage tube group in the present invention;

[0032] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure of the middle bb line;

[0033] Figure 8 It is a structural schematic diagram of the reset shock pipe group in the present invention;

[0034] Fig. 9 It is a side view structural schematic diagram of the reset shock pipe group in the present invention;

[0035] Fig.10 For the present invention Fig. 9 Schematic diagram of the cross-sectional structure of the center cc line;

[0036] Fig.11 It is a structural schematic diagram of the auxiliary shock valve assembly in the present invention;

[0037] Fig.12 It is a side view structural schematic diagram of the auxiliary shock valve assembly in the present invention;

[0038] Fig.13 For the present invention Fig.12 Schematic diagram of the cross-sectional structure of the dd line.

[0039] Among them, 1. Joint balance pipe group; 101. Oil pressure joint control pipe; 102. Balance pipe shell; 103. Joint pipe groove; 104. Joint threaded pipe; 105. Oil pressure output valve; 106. Drive oil pressure oil chamber; 107. Pressure relief chamber; 108. Shock through-core upper casing; 109. Balance sliding spring plug; 110. Balance sliding spring; 111. Spring base ring; 112. Balance pipe fixed bottom plug; 113. Balance Pipe fixing bottom pipe seat; 114, shock connecting pipe; 2, energy storage pipe group; 201, energy storage pipe shell; 202, lower connecting pipe sleeve; 203, lower casing front sealing sleeve; 204, oil pressure connecting shock pipe; 205, shock through-core lower casing; 206, energy storage spring; 207, energy storage spring base; 208, energy storage pipe clamping ring; 209, energy storage pipe sealing base; 3, reset shock pipe group; 301, reset pipe shell; 302, pipe shell Connecting sealing ring; 303, shock tube shell; 304, lower drill bit connecting tube head; 305, reset tube sealing base; 306, sealing base fixing clamp ring; 307, reset buffer spring; 308, hydraulic reset spring seat; 309, reset retaliatory protection spring; 310, protection spring rear sealing seat; 311, shock tube head; 312, shock table ring; 313, oil pressure push bucket; 314, pressure control valve; 315, auxiliary shock valve group Parts; 3151, auxiliary shock valve top plate; 3152, check valve; 3153, auxiliary shock chamber; 3154, auxiliary shock core; 3155, auxiliary shock pressure relief groove; 3156, oil pressure injection pipe; 3157, auxiliary shock cavity; 3158, inertia auxiliary shock hammer; 3159, auxiliary shock spring plate; 31510, auxiliary shock reset spring; 31511, check valve cover; 316, circuit oil chamber; 317, oil chamber plug; 318, plug sealing ring. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 As shown, an embodiment of the present invention provides a mechanical hydraulic jar, comprising a joint balance pipe group 1, an energy storage pipe group 2 and a reset jar pipe group 3, wherein the joint balance pipe group 1, the energy storage pipe group 2 and the reset jar pipe group 3 are connected end to end in sequence;

[0042] like Figure 1 , Figures 2 to 4As shown, the joint balance pipe group 1 includes: an oil pressure joint control pipe 101, a balance pipe housing 102, a joint pipe groove 103, a joint threaded pipe 104, and an oil pressure output valve 105. The upper end of the oil pressure joint control pipe 101 is integrally provided with a joint threaded pipe 104, the joint pipe groove 103 is provided inside the joint threaded pipe 104, and the bottom of the joint pipe groove 103 is fixedly installed with an oil pressure output valve 105. The rear end of the oil pressure joint control pipe 101 is connected to the balance pipe housing 102; the rear end of the oil pressure output valve 105 is provided with a driving oil pressure oil chamber 106, and the balance pipe housing 102 is provided with a A pressure relief chamber 107 is provided in the pressure relief chamber 107, and a balancing sliding spring plug 109 is sleeved on the balancing sliding spring plug 109. A balancing sliding spring 110 is provided on the balancing sliding spring plug 109 and at the lower end of the balancing sliding spring plug 109. A spring base ring 111 is provided at the rear end of the balancing sliding spring 110, and a balancing pipe fixed bottom plug 112 is provided at the rear end of the spring base ring 111. A balancing pipe fixed bottom pipe seat 113 is provided at the rear end of the balancing pipe fixed bottom plug 112, and a balancing pipe fixed bottom pipe seat 113 is provided at the rear end of the balancing pipe fixed bottom plug 112. A jarring connecting pipe 114 is provided inside the jarring upper sleeve 108.

[0043] Through the above-mentioned technical scheme, the connecting pipes on the ground are connected through the joint threaded pipe 104, and then the oil pressure is output to the shock connecting pipe 114 through the oil pressure output valve 105, and the oil pressure is transported to the lower end through the shock connecting pipe 114, wherein the shock connecting pipe 114 is connected to the inside of the pressure relief chamber 107 through the hole on the side of the shock connecting pipe 114 through the shock through-core upper sleeve 108, which can reduce the backwash pressure caused by the rapid backflow of oil pressure during shock, and the oil pressure discharged into the pressure relief chamber 107 is absorbed by the balancing sliding spring 110 at the rear end of the balancing sliding spring plug 109, thereby achieving the effect of hydraulic balance.

[0044] like Figure 1 , Figures 5 to 7As shown, the energy storage tube group 2 includes: an energy storage tube shell 201, a lower casing front sealing sleeve 203, and a shock through-core lower casing 205. The lower end of the shock through-core upper casing 108 is integrally provided with a shock through-core lower casing 205, the upper end of the shock through-core lower casing 205 is sleeved with a lower casing front sealing sleeve 203, and the outer ring of the lower casing front sealing sleeve 203 is sleeved with an energy storage tube shell 201; the lower end of the shock through-core lower casing 205 is fixedly sleeved with an energy storage spring base 207, and the shock through-core lower casing 205 and located on the lower casing front sealing sleeve 203 is provided with an energy storage spring base 207. An energy storage spring 206 is sleeved between the sleeve 203 and the energy storage spring base 207, an energy storage tube sealing base 209 is arranged at the lower ends of the shock through-core lower sleeve 205 and the energy storage spring base 207, an energy storage tube clamping ring 208 is arranged between the outer ring of the energy storage tube sealing base 209 and the inner wall of the lower end of the energy storage tube shell 201, and a lower connecting pipe sleeve 202 is arranged at the lower end of the energy storage tube sealing base 209; an oil pressure connecting shock tube 204 is arranged in the lower connecting pipe sleeve 202, the shock through-core lower sleeve 205 and the energy storage tube sealing base 209.

[0045] Through the above technical solution, the oil pressure is connected down to the oil pressure connecting shock tube 204 through the shock connecting tube 114 at the upper end, and then pressed into the gap between the energy storage spring base 207 and the energy storage tube sealing base 209 through the oil hole on the side of the oil pressure connecting shock tube 204, so that the energy storage spring base 207 can be pushed to squeeze the energy storage spring 206 while pushing the shock through-core lower casing 205 to push the energy storage tube shell 201 to the lower end, so that it can serve as an auxiliary shock acceleration when the lower end is shocked upward, thereby increasing the shock effect.

[0046] like Figure 1 , Figures 8 to 10As shown, the reset shock pipe group 3 includes: a reset pipe shell 301, a reset pipe sealing base 305, a sealing base fixing collar 306, and a hydraulic reset spring seat 308. The lower end of the lower connecting pipe sleeve 202 is integrally provided with a shock pipe head 311, the upper end of the shock pipe head 311 is sleeved with a reset pipe sealing base 305, the outer end of the reset pipe sealing base 305 is sleeved with a reset pipe shell 301, the outer end of the reset pipe sealing base 305 is located on the inner wall bracket of the upper end of the reset pipe shell 301 and is provided with a sealing base fixing collar 306, the outer end of the shock pipe head 311 and located in the reset pipe shell 301 is sleeved with a hydraulic reset spring seat 308; a reset buffer spring 307 is provided between the hydraulic reset spring seat 308 and the reset pipe sealing base 305, a reset retaliatory protection spring 309 is provided at the rear end of the hydraulic reset spring seat 308, and a shock ring 31 is integrally provided on the inner wall of the reset pipe shell 301. 2. The upper end of the shock ring 312 is provided with a protective spring rear sealing seat 310, the lower end of the shock pipe head 311 is provided with an oil pressure push bucket 313, the oil pressure connecting shock pipe 204 passes through the shock pipe head 311 and the oil pressure push bucket 313, and the lower end of the oil pressure connecting shock pipe 204 is fixedly installed with a pressure control valve 314, the lower end of the reset pipe shell 301 is provided with a pipe shell connecting sealing ring 302, and the lower end of the pipe shell connecting sealing ring 302 is provided There is a shock tube shell 303, and a circuit oil chamber 316 is opened inside the shock tube shell 303. A secondary shock valve assembly 315 is fixedly installed in the circuit oil chamber 316. A lower drill bit connecting pipe head 304 is provided at the lower end of the shock tube shell 303. A plug sealing ring 318 is provided between the lower end of the shock tube shell 303 and the lower drill bit connecting pipe head 304. An oil chamber plug 317 is fixedly installed at the upper end of the plug sealing ring 318 and located in the circuit oil chamber 316.

[0047] Through the above technical scheme, the oil pressure in the shock tube 204 is connected to the front end of the pressure control valve 314 through the oil pressure connection, and the oil pressure is connected to the shock tube head 311 and the shock platform ring 312 through the oil hole on the inner wall. The gap between the two is gradually narrowed by the oil pressure, and the reset buffer spring 307 is squeezed. When the shock tube head 311 reaches the oil pressure pushing bucket 313, the oil pressure is released from the side oil hole at the lower end of the oil pressure connected shock tube 204, and the internal support of the oil pressure is lost. The shock tube head 311 suddenly slides back, and when its head end is exposed to the oil hole again, the oil pressure is restored, and the sliding stops suddenly to achieve the shock effect.

[0048] like Fig.10 , Figures 11 to 13As shown, the secondary shock valve assembly 315 includes: a secondary shock valve top plate 3151, a check valve 3152, a secondary shock chamber 3153, a secondary shock shock core 3154, a secondary shock pressure relief groove 3155, an oil pressure injection pipe 3156, a secondary shock cavity 3157, an inertial secondary shock hammer 3158, a secondary shock spring plate 3159, a secondary shock reset spring 31510, and a check valve cover 31511; a secondary shock valve top plate 3151 is fixedly installed on the inner wall of the circuit oil chamber 316, and two check valves 3152 with opposite check directions are fixedly installed on the secondary shock valve top plate 3151, and a check valve cover 31511 is fixedly installed in each of the check valves 3152, wherein the lower end of the middle check valve 3152 is integrated with a secondary shock chamber 3153, and the secondary shock chamber 3153 A secondary shock core 3154 is provided for internal sliding, and a secondary shock pressure relief groove 3155 is provided at one end of the secondary shock core 3154, and an oil pressure injection pipe 3156 is provided in the secondary shock pressure relief groove 3155; a secondary shock cavity 3157 is also provided in the secondary shock core 3154, and an inertial secondary shock hammer 3158 is movably provided in the secondary shock cavity 3157, and a secondary shock spring plate 3159 is integrally provided at one end of the secondary shock cavity 3153 away from the secondary shock pressure relief groove 3155, and a secondary shock reset spring 31510 is provided between the inner side of the secondary shock spring plate 3159 and the secondary shock core 3154, and both ends of the through groove of the secondary shock pressure relief groove 3155 are arranged outside the inner wall of the through pipe of the check valve 3152, and the upper end of the oil pressure injection pipe 3156 faces the check valve cover 31511.

[0049] Through the above technical solution, when the shock pipe head 311 is reset at a speed relatively slow to the shock, the oil pressure passes through the secondary shock valve assembly 315 along the constant pressure of the pressure control valve 314, and the secondary shock valve assembly 315 vibrates in a direction perpendicular to the shock, so that the stuck drill bit can vibrate in the vertical direction to release the rock structure clamped with it. The oil pressure is connected downward through the check valve cover 31511, enters the oil pressure injection pipe 3156, and gradually enters the sealed cavity on one side of the secondary shock pressure relief groove 3155, and squeezes the secondary shock reset spring 31510 by moving the secondary shock core 3154 to one side. When the secondary shock pressure relief groove 3155 is exposed inside the inner wall of the lower tube of the check valve 3152, the inside and outside lose pressure and are suddenly pushed back by the secondary shock reset spring 31510, and the inertial secondary shock hammer 3158 hammers again due to inertia, and when the main shock occurs, it flows back from the other check valve 3152.

[0050] Working principle:

[0051] The present invention connects the connecting pipe on the ground through the joint threaded pipe 104, then outputs the oil pressure to the shock connecting pipe 114 through the oil pressure output valve 105, and transmits the oil pressure to the lower end through the shock connecting pipe 114, wherein the shock connecting pipe 114 is connected to the inside of the pressure relief chamber 107 through the hole on the side of the shock connecting pipe 114 through the shock through-core upper sleeve 108, which can reduce the backwash pressure caused by the rapid backflow of the oil pressure during the shock, and the pressure is released into the pressure relief chamber 107 and absorbed by the balance sliding spring 110 at the rear end of the balance sliding spring plug 109, thereby achieving the effect of hydraulic balance;

[0052] The oil pressure is connected to the oil pressure connecting shock pipe 204 through the shock connecting pipe 114 at the upper end, and then pressed into the gap between the energy storage spring base 207 and the energy storage pipe sealing base 209 through the oil hole on the side of the oil pressure connecting shock pipe 204, so that the energy storage spring base 207 can be pushed to squeeze the energy storage spring 206, and the shock through-core lower casing 205 can be pushed to push the energy storage pipe shell 201 to the lower end, so that it can serve as an auxiliary shock acceleration when the lower end shocks upward, thereby increasing the shock effect;

[0053] The oil pressure in the shock pipe 204 is connected to the front end of the pressure control valve 314 through the oil pressure, and the oil pressure is connected to the shock pipe head 311 and the shock platform ring 312 through the oil hole on the inner wall. The gap between the two is gradually closed by the oil pressure, and the reset buffer spring 307 is squeezed. When the shock pipe head 311 reaches the oil pressure push bucket 313, the oil pressure is released from the side oil hole at the bottom of the oil pressure connected shock pipe 204, and the internal support of the oil pressure is lost. The shock pipe head 311 slides back suddenly, and when its head end is exposed to the oil hole again, the oil pressure is restored, and the sliding stops suddenly, achieving the shock effect.

[0054] When the shock pipe head 311 is reset at a relatively slow speed relative to the shock, the oil pressure passes through the secondary shock valve assembly 315 along the constant pressure of the pressure control valve 314, and the secondary shock valve assembly 315 vibrates in a direction perpendicular to the shock, so that the stuck drill bit can vibrate in the vertical direction to release the rock structure stuck with it;

[0055] The oil pressure is connected downward through the check valve cover 31511, enters the oil pressure injection pipe 3156, and gradually enters the sealed cavity on one side of the secondary shock pressure relief groove 3155, and squeezes the secondary shock reset spring 31510 by moving the secondary shock core 3154 to one side. When the secondary shock pressure relief groove 3155 is exposed inside the inner wall of the lower tube of the check valve 3152, the inside and outside lose pressure and are suddenly pushed back by the secondary shock reset spring 31510, and the inertial secondary shock hammer 3158 strikes again due to inertia, thereby achieving the effect of lateral shock, accelerating the speed of unblocking, and increasing the efficiency of unblocking. When the main shock occurs, it flows back from the other check valve 3152.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A mechanical hydraulic jar, comprising a joint balancing pipe group (1), an energy storage pipe group (2) and a reset jar pipe group (3), characterized in that: The joint balance pipe group (1), the energy storage pipe group (2) and the reset shock pipe group (3) are connected end to end in sequence; The joint balance pipe assembly (1) comprises: an oil pressure joint control pipe (101), a balance pipe housing (102), a joint pipe groove (103), a joint threaded pipe (104), and an oil pressure output valve (105); the upper end of the oil pressure joint control pipe (101) is integrally provided with a joint threaded pipe (104); the joint pipe groove (103) is provided inside the joint threaded pipe (104); the bottom of the joint pipe groove (103) is fixedly installed with an oil pressure output valve (105); and the rear end of the oil pressure joint control pipe (101) is connected to the balance pipe housing (102); A driving oil pressure chamber (106) is provided at the rear end of the oil pressure output valve (105); a pressure relief chamber (107) is provided in the balancing tube housing (102); a shock through-core upper sleeve (108) is provided in the pressure relief chamber (107); a balancing sliding spring plug (109) is sleeved on the shock through-core upper sleeve (108); a balancing sliding spring (110) is provided on the shock through-core upper sleeve (108) and at the lower end of the balancing sliding spring plug (109); a spring base ring (111) is provided at the rear end of the balancing sliding spring (110); a balancing tube fixed bottom plug (112) is provided at the rear end of the spring base ring (111); and a balancing tube fixed bottom tube seat (113) is provided at the rear end of the balancing tube fixed bottom plug (112); The energy storage tube group (2) comprises: an energy storage tube shell (201), a lower casing front sealing sleeve (203), and a shock through-core lower casing (205); the shock through-core upper casing (108) is integrally provided with a shock through-core lower casing (205) at the lower end; the shock through-core lower casing (205) is sleeved with a lower casing front sealing sleeve (203) at the upper end; and the outer ring of the lower casing front sealing sleeve (203) is sleeved with an energy storage tube shell (201); An energy storage spring base (207) is fixedly sleeved on the lower end of the shock through-core lower sleeve (205), and an energy storage spring (206) is sleeved on the shock through-core lower sleeve (205) and located between the lower sleeve front sealing sleeve (203) and the energy storage spring base (207); An energy storage tube sealing base (209) is disposed at the lower ends of the shock through-core lower casing (205) and the energy storage spring base (207); an energy storage tube clamping ring (208) is disposed between the outer ring of the energy storage tube sealing base (209) and the inner wall of the lower end of the energy storage tube shell (201); and a lower connecting tube sleeve (202) is disposed at the lower end of the energy storage tube sealing base (209); An oil pressure communicating shock pipe (204) is arranged inside the lower connecting pipe sleeve (202), the shock through-core lower sleeve (205) and the energy storage pipe sealing base (209); The reset shock pipe assembly (3) comprises: a reset pipe shell (301), a reset pipe sealing base (305), a sealing base fixing collar (306), and a hydraulic reset spring seat (308); the lower end of the lower connecting pipe sleeve (202) is integrally provided with a shock pipe head (311); the upper end of the shock pipe head (311) is sleeved with a reset pipe sealing base (305); the outer end of the reset pipe sealing base (305) is sleeved with a reset pipe shell (301); the outer end of the reset pipe sealing base (305) is located on the inner wall bracket of the upper end of the reset pipe shell (301) and is provided with a sealing base fixing collar (306); the outer end of the shock pipe head (311) and located inside the reset pipe shell (301) is sleeved with a hydraulic reset spring seat (308); The lower end of the reset tube shell (301) is provided with a tube shell connection sealing ring (302), the lower end of the tube shell connection sealing ring (302) is provided with a shock tube shell (303), a circuit oil chamber (316) is provided inside the shock tube shell (303), a secondary shock valve assembly (315) is fixedly installed in the circuit oil chamber (316), a lower drill bit connection pipe head (304) is provided at the lower end of the shock tube shell (303), a plug sealing ring (318) is provided between the lower end of the shock tube shell (303) and the lower drill bit connection pipe head (304), and an oil chamber plug (317) is fixedly installed at the upper end of the plug sealing ring (318) and located in the circuit oil chamber (316); The secondary shock valve assembly (315) comprises: a secondary shock valve top plate (3151), a check valve (3152), a secondary shock chamber (3153), a secondary shock core (3154), a secondary shock pressure relief groove (3155), an oil pressure injection pipe (3156), a secondary shock cavity (3157), an inertial secondary shock hammer (3158), a secondary shock spring plate (3159), a secondary shock reset spring (31510), and a check valve cover (31511); A secondary shock valve top plate (3151) is fixedly mounted on the inner wall of the loop oil chamber (316), two check valves (3152) with opposite check directions are fixedly mounted on the secondary shock valve top plate (3151), a check valve cover (31511) is fixedly mounted in each check valve (3152), a secondary shock chamber (3153) is integrally arranged at the lower end of the middle check valve (3152), a secondary shock core (3154) is slidably arranged in the secondary shock chamber (3153), a secondary shock pressure relief groove (3155) is provided at one end of the secondary shock core (3154), and an oil pressure injection pipe (3156) is provided in the secondary shock pressure relief groove (3155); A secondary shock cavity (3157) is also provided in the secondary shock core (3154), an inertial secondary shock hammer (3158) is movably arranged in the secondary shock cavity (3157), a secondary shock spring plate (3159) is integrally arranged at one end of the secondary shock cavity (3153) away from the secondary shock pressure relief groove (3155), and a secondary shock reset spring (31510) is arranged between the inner side of the secondary shock spring plate (3159) and the secondary shock core (3154).

2. A mechanical hydraulic jar according to claim 1, characterized in that: A shock connecting pipe (114) is arranged inside the shock-through upper casing (108).

3. A mechanical hydraulic jar according to claim 2, characterized in that: A return buffer spring (307) is provided between the hydraulic return spring seat (308) and the return tube sealing base (305), and a return retaliatory protection spring (309) is provided at the rear end of the hydraulic return spring seat (308).

4. A mechanical hydraulic jar according to claim 3, characterized in that: The inner wall of the reset tube shell (301) is integrally provided with a shock platform ring (312); the upper end of the shock platform ring (312) is provided with a protective spring rear sealing seat (310); the lower end of the shock pipe head (311) is provided with an oil pressure push bucket (313); the oil pressure connecting shock pipe (204) passes through the shock pipe head (311) and the oil pressure push bucket (313); and the lower end of the oil pressure connecting shock pipe (204) is fixedly provided with a pressure control valve (314).

5. A mechanical hydraulic jar according to claim 4, characterized in that: Both ends of the through groove of the secondary shock pressure relief groove (3155) are arranged outside the inner wall of the through pipe of the check valve (3152), and the upper end of the oil pressure injection pipe (3156) faces the check valve cover (31511).

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