Oscillating pulse loosening device for drill rod power tongs

Abstract

The utility model provides a drill rod power tong oscillation pulse unbuckling device, which relates to the technical field of petroleum drilling and comprises a C-shaped chain component, a spring, a plurality of air picks, a first tightening cylinder, a second tightening cylinder and an air supply system. According to the utility model, the vibration pulse loosening device is used for assisting the drill rod power tongs to work, so that the drill rod connection with high torque and expansion of drill rod threads can be conveniently disassembled, namely the high stress torque between the threads is gradually released along with the pressurization loosening of the drill rod power tongs by adopting the vibration principle, and the loosening is realized; therefore, the drill rod and the detaching tool can be prevented from being damaged, dangerous accidents are avoided, and the detaching efficiency of the drill rod can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a drill pipe power tongs oscillation pulse loosening device. Background Art

[0002] In recent years, with the continuous increase in drilling depth, the construction of new layers in the construction area is limited, the failure to timely start the drill bit and the higher the downhole failure rate, the greater the load of the drilling tool, and the high torque and buckle expansion of the drill pipe thread caused by strong pulling, strong twisting, and improper operation. The conventional unbuckling of the drill pipe power tongs cannot meet the production needs. The forced pressure loosening during operation causes great damage to the equipment, high maintenance costs, high labor intensity, low work efficiency, and great safety risks.

[0003] In order to reduce safety risks and maintenance costs and improve work efficiency, the utility model provides a drill pipe power tongs oscillation pulse loosening device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a drill pipe power tongs oscillation pulse loosening device and a use method, which solves the problem that the drill pipe power tongs are inconvenient to disassemble the upper and lower drill pipes when the drill pipe threads have high torque and the threads are stretched.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A drill pipe power tongs oscillating pulse loosening device is used to assist the drill pipe power tongs in disassembling the upper drill pipe and the lower drill pipe. The oscillating pulse loosening device is installed between the upper and lower tongs of the power tongs.

[0007] Specifically include:

[0008] C-chain assembly;

[0009] A spring, the bottom end of which is fixedly connected to the lower jaw housing of the lower jaw, the spring is inclined toward the upper center of the lower jaw, the C-shaped chain assembly is fixedly mounted on the top of the spring, a plurality of springs are provided, and the plurality of springs are evenly distributed along the outer side of the C-shaped chain assembly;

[0010] A pneumatic pick, the pneumatic pick is fixedly mounted on the top of the C-shaped chain assembly, and a plurality of pneumatic picks are provided, and the plurality of pneumatic picks are evenly distributed along the outer side of the C-shaped chain assembly;

[0011] A first tightening cylinder and a second tightening cylinder, wherein the first tightening cylinder and the second tightening cylinder are both fixedly connected to the lower jaw housing of the lower jaw, an output end of the first tightening cylinder is fixedly connected to the first end of the C-shaped chain assembly, and an output end of the second tightening cylinder is fixedly connected to the second end of the C-shaped chain assembly;

[0012] An air supply system is provided, wherein the air supply system is used to supply air to a first tightening cylinder, a second tightening cylinder, and a plurality of pneumatic picks.

[0013] Preferably, the gas supply system comprises:

[0014] Gas source;

[0015] An air storage chamber, wherein the air outlet end of the air source is connected to the air storage chamber;

[0016] The fourth air circuit and the third air circuit, the air inlet ends of the fourth air circuit and the third air circuit are fixedly connected to the air storage chamber, the air outlet end of the third air circuit is connected to a two-position three-way air valve, the two air outlet ends of the two-position three-way air valve are respectively connected to the first air circuit and the second air circuit, the first air circuit supplies air to the forward stroke of the first tightening cylinder and the second tightening cylinder, the second air circuit supplies air to the backward stroke of the first tightening cylinder and the second tightening cylinder, the air outlet end of the fourth air circuit is connected to a distributor, the distributor has a plurality of air outlet branches, and the plurality of air outlet branches supply air to a plurality of pneumatic picks;

[0017] The third gas path is connected with a third pressure regulating valve and a third switch valve;

[0018] The fourth gas path is connected with a fourth switch valve and a fourth pressure regulating valve.

[0019] Preferably, there are five pneumatic picks, which are sequentially distributed along the outline of the C-shaped chain assembly as follows: pneumatic pick No. 1, pneumatic pick No. 4, pneumatic pick No. 2, pneumatic pick No. 5, and pneumatic pick No. 3;

[0020] The distributor has an upper interface for gas entry; the distributor has a first lower joint, a second lower joint, a third lower joint, a fourth lower joint, and a fifth lower joint which are sequentially distributed in an annular pattern and are all used for gas output;

[0021] The first lower joint is connected to the No. 1 pneumatic pick through an air pipe, the No. 4 pneumatic pick is connected to the fourth lower joint through an air pipe, the No. 2 pneumatic pick is connected to the second lower joint through an air pipe, the No. 5 pneumatic pick is connected to the fifth lower joint through an air pipe, and the No. 3 pneumatic pick is connected to the third lower joint through an air pipe;

[0022] The distributor comprises:

[0023] A lower shell, wherein the first lower joint, the second lower joint, the third lower joint, the fourth lower joint and the fifth lower joint are arranged at the bottom of the lower shell;

[0024] An upper shell, wherein the upper shell is fixedly mounted on the top of the lower shell, and an upper interface is arranged on the top of the upper shell;

[0025] A notch swivel, a notch is provided on the side of the notch swivel, the notch swivel is rotatably mounted on the inner side of the lower shell, and the notch swivel blocks four lower joints among the first lower joint, the second lower joint, the third lower joint, the fourth lower joint, and the fifth lower joint, and during the rotation of the notch swivel, the lower joints that are not blocked are sequentially transformed;

[0026] A stopper assembly is installed on the inner side of the lower shell. The stopper assembly has five groups and is distributed in a circular array. The stopper assembly is used to stop the notch swivel from rotating.

[0027] A triggering member, the triggering member is rotatably mounted on the notch swivel and is used to release the stopping effect of the stop assembly close to the notch on the notch swivel;

[0028] An elastic telescopic stopper, which is installed above the notch swivel and is used to transmit a thrust for driving the notch swivel to rotate, and when the thrust is greater than a first threshold, the elastic telescopic stopper retracts downward to give way;

[0029] A transmission shaft, on which a fan blade assembly is fixedly connected, a cylindrical portion is provided on the upper shell at the outer side of the fan blade assembly, and a central gear is fixedly connected on the transmission shaft and below the fan blade assembly;

[0030] An inner gear ring, the inner gear ring is rotatably connected to the upper shell, a planetary gear set is arranged between the inner gear ring and the central gear, and a central frame of the planetary gear set is fixedly connected to the upper shell;

[0031] The bottom of the inner gear ring is fixedly connected with a shifting block corresponding to the triggering member and the elastic telescopic stopper.

[0032] Preferably, an elliptical punch is fixedly mounted on the pneumatic pick output head by a pin.

[0033] Preferably, the lower shell comprises: an inner shell, and an outer shell fixedly mounted on the outer side of the inner shell, and an annular sandwich is formed between the inner shell and the outer shell;

[0034] The stop assembly includes: a rectangular hole opened on the side of the inner shell, an I-shaped clamp is fixedly provided on the inner side of the rectangular hole, a sliding hole is opened on the side of the I-shaped clamp, a stopper is slidably connected to the inner side of the sliding hole, one end of the stopper is fixedly connected to an elastic rear pad inside the annular interlayer, a limiting plate is fixedly connected to the side of the stopper near the elastic rear pad, and a bayonet is opened at the position corresponding to the notch swivel and the stopper.

[0035] Preferably, the trigger member includes: a shaft member, the shaft member is rotatably connected to the notched swivel, a push pin is fixedly connected to the top of the shaft member, the notched swivel has a mounting opening at the bottom end of the shaft member, and an arc-shaped push plate is fixedly connected to the bottom end of the shaft member and located on the inner side of the mounting opening.

[0036] Preferably, a mounting block is fixedly connected to the center position of the inner bottom of the lower shell, and the bottom end of the transmission shaft is rotatably connected to the mounting block.

[0037] Preferably, the elastic telescopic stopper comprises: a mounting groove is provided at the top of the notched swivel, a plate body is slidably arranged in the mounting groove, and an elastic bottom pad is fixedly connected to the bottom end of the plate body.

[0038] Preferably, the position height of the No. 1 pneumatic pick is lower than that of the No. 4 pneumatic pick, the position height of the No. 4 pneumatic pick is lower than that of the No. 2 pneumatic pick, the position height of the No. 2 pneumatic pick is lower than that of the No. 5 pneumatic pick, and the position height of the No. 5 pneumatic pick is lower than that of the No. 3 pneumatic pick.

[0039] The utility model provides a drill pipe power tongs oscillation pulse loosening device and its use has the following technical effects:

[0040] The utility model utilizes an oscillating pulse loosening device to assist the work of the drill pipe power tongs, thereby facilitating the disassembly of some drill pipe connections with high torque and expansion of the drill pipe threads, that is, the high stress torque between the threads is gradually released by the oscillation principle accompanied by the pressurized loosening of the drill pipe power tongs, and the loosening is achieved, thereby avoiding damage to the drill pipe and disassembly tools (reducing maintenance costs), avoiding the occurrence of dangerous accidents, and improving the efficiency of drill pipe disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the installation position of a drill pipe power tongs oscillation pulse loosening device proposed by the utility model;

[0042] Figure 2 This is a schematic diagram of the principle of a drill pipe power tongs oscillation pulse loosening device proposed by the utility model;

[0043] Figure 3 It is a three-dimensional schematic diagram of a drill pipe power tongs oscillation pulse loosening device proposed by the utility model;

[0044] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0045] Figure 5 A three-dimensional schematic diagram of a distributor of a drill pipe power tongs oscillation pulse loosening device proposed by the utility model;

[0046] Figure 6 This is a front view of a distributor of a drill pipe power tongs oscillation pulse loosening device proposed by the utility model;

[0047] Figure 7 for Figure 6Section view of the section line at BB;

[0048] Figure 8 for Figure 7 The partial enlarged view at D in the middle;

[0049] Fig. 9 for Figure 6 Section view of the section line at CC;

[0050] Fig.10 This is a schematic diagram of the interior of a distributor of a drill pipe power tongs oscillation pulse loosening device proposed by the utility model;

[0051] Fig.11 A schematic diagram of the coordination between the gear ring and the distribution plate of the vibration pulse loosening device of the drill pipe power tongs proposed by the utility model;

[0052] Fig.12 A schematic diagram of the cooperation between a shifting block and a triggering member of a drill pipe power tongs oscillation pulse loosening device proposed by the utility model;

[0053] Fig.13 The utility model provides a top view of a distributor bottom shell of a drill pipe power tongs oscillation pulse loosening device.

[0054] Among them, 1. power tongs; 101. upper tongs; 102. lower tongs; 1021. lower tongs housing; 2. oscillating pulse release device; 201. C-shaped chain assembly; 202. first tightening cylinder; 203. second tightening cylinder; 204. spring; 205. pneumatic pick; 2051. No. 1 pneumatic pick; 2052. No. 2 pneumatic pick; 2053. No. 3 pneumatic pick; 2054. No. 4 pneumatic pick; 2055. No. 5 pneumatic pick; 205a. pneumatic pick output head; 205b. elliptical shaped punch; 205c, pin; 3, upper drill rod; 4, lower drill rod; 5, first gas circuit; 6, second gas circuit; 7, third gas circuit; 8, two-position three-way valve; 9, third pressure regulating valve; 10, third switch valve; 11, fourth gas circuit; 12, gas storage chamber; 13, gas source; 14, fourth switch valve; 15, fourth pressure regulating valve; 16, distributor; 161, lower shell; 161a, first lower joint; 161b, second lower joint; 161c, third lower joint; 1 61d, fourth lower joint; 161e, fifth lower joint; 16101, inner shell; 16102, outer shell; 16103, annular sandwich; 162, upper shell; 163, cylindrical part; 164, upper interface; 165, stopper assembly; 1651, rectangular hole; 1652, "X"-shaped clamp; 1653, sliding hole; 1654, stopper; 1655, limit plate; 1656, elastic rear pad; 166, notch; 167, notch swivel; 168, installation Mounting mouth; 169, bayonet; 1610, trigger member; 161001, shaft member; 161002, arc-shaped push plate; 161003, push pin; 1611, fan blade assembly; 1612, mounting block; 1613, transmission shaft; 1614, center gear; 1615, planetary gear set; 1616, center frame; 1617, inner ring gear; 1618, shift block; 1619, elastic telescopic stopper; 16191, plate body; 16192, elastic base pad. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0056] Embodiment 1:

[0057] like Figure 1 As shown, an embodiment of the utility model provides an oscillation pulse loosening device for a drill rod power tong, which is used to assist the drill rod power tong 1 in disassembling the upper drill rod 3 and the lower drill rod 4. The oscillation pulse loosening device is installed between the upper clamp 101 and the lower clamp 102 of the power tong 1. When the drill rod power tong 1 is working, the device works synchronously.

[0058] Reference Figure 1-Figure 3 The oscillating pulse loosening device specifically includes: a C-shaped chain assembly 201, a spring 204, a plurality of pneumatic picks 205, a first tightening cylinder 202, a second tightening cylinder 203 and an air supply system.

[0059] The bottom end of the spring 204 is fixedly connected to the lower jaw housing 1021 of the lower jaw 102, and the spring 204 is inclined toward the upper center of the lower jaw 102. The C-shaped chain assembly 201 is fixedly installed on the top of the spring 204, and the C-shaped chain assembly 201 is coaxial with the lower jaw housing 1021. A plurality of springs 204 are provided, and the plurality of springs 204 are evenly distributed along the outer side of the C-shaped chain assembly 201. The plurality of springs 204 are used to elastically support the C-shaped chain assembly 201. A pneumatic pick 205 is fixedly installed on the top of the C-shaped chain assembly 201. A plurality of pneumatic picks 205 are provided, and the plurality of pneumatic picks 205 are evenly distributed along the outer side of the C-shaped chain assembly 201. The head end of the pneumatic pick 205 is used to perform pulse vibration impact on the drill rod to assist the operation of the drill rod power clamp 1. The vibration generated by the operation of the pneumatic pick 205 is buffered by the plurality of springs 204 to prevent the vibration from being transmitted to the lower jaw 102, thereby ensuring stable and reliable operation.

[0060] The first tightening cylinder 202 and the second tightening cylinder 203 are both fixedly connected to the lower clamp housing 1021 of the lower clamp 102. The output end of the first tightening cylinder 202 is fixedly connected to the first end of the C-shaped chain assembly 201, and the output end of the second tightening cylinder 203 is fixedly connected to the second end of the C-shaped chain assembly 201.

[0061] During general design, the C-shaped chain assembly 201 is designed to be slightly smaller than the center opening of the lower clamp housing 1021 so that the drill rod can enter the inner side of the C-shaped chain assembly 201. Before the pneumatic pick 205 works, the first tightening cylinder 202 and the second tightening cylinder 203 are controlled to tighten the two ends of the C-shaped chain assembly 201, thereby shrinking the C-shaped chain assembly 201 and driving multiple pneumatic picks 205 close to the drill rod.

[0062] The air supply system is used to supply air to the first tightening cylinder 202 , the second tightening cylinder 203 , and the plurality of pneumatic picks 205 .

[0063] Reference Figure 2 In one embodiment, the gas supply system includes: a gas source 13, a gas storage chamber 12, a fourth gas path 11, and a third gas path 7; wherein the gas source 13 can be a compressor, an air compressor, etc.

[0064] The air outlet end of the air source 13 is connected to the air storage chamber 12, which is used to supply air to the air storage chamber 12, forming a stable pressure environment inside the air storage chamber 12. The air inlet ends of the fourth air circuit 11 and the third air circuit 7 are fixedly connected to the air storage chamber 12, and the fourth air circuit 11 and the third air circuit 7 are used to distribute air to the first tightening cylinder 202, the second tightening cylinder 203 and the pneumatic pick 205.

[0065] The air outlet end of the third air circuit 7 is connected to a two-position three-way air valve 8, and the two air outlet ends of the two-position three-way air valve 8 are respectively connected to the first air circuit 5 and the second air circuit 6. The two-position three-way air valve 8 switches the first air circuit 5 and the second air circuit 6 on and off. The first air circuit 5 supplies air to the forward stroke of the first tightening cylinder 202 and the second tightening cylinder 203, and the second air circuit 6 supplies air to the backward stroke of the first tightening cylinder 202 and the second tightening cylinder 203. The air outlet end of the fourth air circuit 11 is connected to a distributor 16, and the distributor 16 has a plurality of air outlet branches, and the plurality of air outlet branches correspond to supply air to a plurality of pneumatic picks 205.

[0066] Furthermore, the third gas path 7 is connected to a third pressure regulating valve 9 and a third switch valve 10 ; and the fourth gas path 11 is connected to a fourth switch valve 14 and a fourth pressure regulating valve 15 .

[0067] When in use, the user first adjusts the two-position three-way air valve 8 to connect the first air circuit 5 with the third air circuit 7, and controls the third switch valve 10 on the third air circuit 7 to open. At this time, the air pressure drives the forward stroke of the first tightening cylinder 202 and the second tightening cylinder 203 to tighten the C-shaped chain assembly 201; conversely, the two-position three-way air valve 8 is adjusted to connect the second air circuit 6 with the third air circuit 7, and controls the third switch valve 10 on the third air circuit 7 to open. At this time, the air pressure drives the backward stroke of the first tightening cylinder 202 and the second tightening cylinder 203, and cooperates with the action of multiple springs 204 to realize the opening of the C-shaped chain assembly 201.

[0068] The user controls the fourth switch valve 14 on the fourth air path 11 to open, and the air pressure passing through the fourth air path 11 passes through the distributor 16 and is distributed to multiple pneumatic picks to drive the pneumatic picks to work.

[0069] Reference Figure 1-Figure 13 In one embodiment, the pneumatic picks 205 have five pneumatic picks, which are sequentially distributed along the outline of the C-shaped chain assembly 201 as follows: pneumatic pick No. 1 2051 , pneumatic pick No. 4 2054 , pneumatic pick No. 2 2052 , pneumatic pick No. 5 2055 , and pneumatic pick No. 3 2053 .

[0070] The distributor 16 has an upper interface 164 for gas entry; the distributor 16 has a first lower joint 161a, a second lower joint 161b, a third lower joint 161c, a fourth lower joint 161d, and a fifth lower joint 161e which are sequentially distributed in an annular pattern and are all used for gas output.

[0071] The first lower joint 161a is connected to the No. 1 pneumatic pick 2051 through an air pipe, the No. 4 pneumatic pick 2054 is connected to the fourth lower joint 161d through an air pipe, the No. 2 pneumatic pick 2052 is connected to the second lower joint 161b through an air pipe, the No. 5 pneumatic pick 2055 is connected to the fifth lower joint 161e through an air pipe, and the No. 3 pneumatic pick 2053 is connected to the third lower joint 161c through an air pipe.

[0072] The distributor 16 realizes the opening of the first lower joint 161a, the second lower joint 161b, the third lower joint 161c, the fourth lower joint 161d, and the fifth lower joint 161e in sequence, thereby corresponding to the sequential operation of the No. 1 pneumatic pick 2051, the No. 2 pneumatic pick 2052, the No. 3 pneumatic pick 2053, the No. 4 pneumatic pick 2054, and the fifth lower joint 161e, as shown in FIG. Figure 3 As shown in , it realizes the staggered annular working mode, which helps to remove the threads on the drill pipe.

[0073] Specifically, the distributor 16 includes: a lower shell 161, an upper shell 162, a notched swivel 167, a stop assembly 165, a trigger member 1610, an elastic telescopic stop member 1619, a transmission shaft 1613, and a planetary gear reduction mechanism composed of an inner ring gear 1617, a central gear 1614, and a planetary gear set 1615.

[0074] The first lower joint 161a, the second lower joint 161b, the third lower joint 161c, the fourth lower joint 161d and the fifth lower joint 161e are arranged at the bottom of the lower shell 161, and a notch 166 is arranged on the side of the notch swivel 167. The notch swivel 167 is rotatably installed on the inner side of the lower shell 161, and the notch swivel 167 blocks four lower joints of the first lower joint 161a, the second lower joint 161b, the third lower joint 161c, the fourth lower joint 161d and the fifth lower joint 161e, and during the rotation of the notch swivel 167, the lower joints that are not blocked are changed sequentially, that is, during the rotation of the notch swivel 167, the first lower joint 161a is not blocked, and then the first lower joint 161a is blocked, the second lower joint 161b is not blocked, and then the second lower joint 161b is blocked, and the third lower joint 161c is not blocked..., thereby realizing a sequential change.

[0075] The upper shell 162 is fixedly mounted on the top of the lower shell 161 , and the two form a sealing area. The upper interface 164 is arranged on the top of the upper shell 162 for inputting high pressure gas into the sealing area between the upper shell 162 and the lower shell 161 .

[0076] The stop assembly 165 is installed on the inner side of the lower shell 161. The stop assembly 165 has five groups and is distributed in a circular array. The stop assembly 165 is used to block the rotation of the notch swivel 167. The trigger member 1610 is rotatably installed on the notch swivel 167 to release the stopping effect of the stop assembly 165 close to the notch 166 on the notch swivel 167. The elastic telescopic stopper 1619 is installed above the notch swivel 167 to transmit the thrust for driving the notch swivel 167 to rotate, and when the thrust is greater than a first threshold, the elastic telescopic stopper 1619 retracts downward to make way.

[0077] The fan blade assembly 1611 is fixedly connected to the transmission shaft 1613, and a cylindrical portion 163 is provided on the upper shell 162 at the outer side of the fan blade assembly 1611. A central gear 1614 is fixedly connected to the transmission shaft 1613 and located below the fan blade assembly 1611. The inner ring gear 1617 is rotatably connected to the upper shell 162, and a planetary gear set 1615 is provided between the inner ring gear 1617 and the central gear 1614. The center frame 1616 of the planetary gear set 1615 is fixedly connected to the upper shell 162, and a shift block 1618 corresponding to the trigger member 1610 and the elastic telescopic stop member 1619 is fixedly connected to the bottom of the inner ring gear 1617.

[0078] The working principle is as follows: the air duct composed of the fan blade assembly 1611 and the cylindrical portion 163 drives the fan blade assembly 1611 to rotate when the airflow passes through, and then drives the transmission shaft 1613 to rotate, so that the central gear 1614 rotates, and the planetary gear reduction mechanism composed of the inner ring gear 1617, the central gear 1614, and the planetary gear set 1615 drives the inner ring gear 1617 to rotate (here the first stage of speed reduction is realized), and the inner ring gear 1617 drives the shift block 1618 to rotate, as shown in FIG. Fig. 9 As shown in , when the shift block 1618 passes the trigger member 1610, the stop assembly 165 at the corresponding position is pushed, so that the notched swivel 167 can continue to rotate, and after the shift block 1618 passes over the trigger member 1610, it pushes the elastic telescopic stopper 1619, and then pushes the notched swivel 167 to rotate until the notched swivel 167 is blocked by the next stop assembly 165. The force applied by the shift block 1618 to the elastic telescopic stopper 1619 increases, and when it is greater than the first threshold, the shift block 1618 passes over the elastic telescopic stopper 1619. Since the notched swivel 167 rotates a certain angle (72° in this embodiment), a lower joint located in the front is blocked and a lower joint located in the rear is opened. When the inner gear ring 1617 continues to rotate nearly 360° after passing the elastic telescopic stopper 1619, it will contact the trigger member 1610 again, and then the above steps are repeated.

[0079] In one embodiment, an elliptical punch 205b is fixedly mounted on the pneumatic pick output head 205a of the pneumatic pick 205 via a pin 205c. The elliptical punch 205b is not easily damaged and is not likely to cause damage to the side of the drill pipe. The elliptical punch 205b of the mounting structure is easy to replace.

[0080] In one embodiment, the lower shell 161 includes: an inner shell 16101 and an outer shell 16102 fixedly mounted on the outer side of the inner shell 16101 , and an annular sandwich 16103 is formed between the inner shell 16101 and the outer shell 16102 .

[0081] The stop assembly 165 includes: a rectangular hole 1651 opened on the side of the inner shell 16101, an I-shaped clamp 1652 is fixedly provided on the inner side of the rectangular hole 1651, a sliding hole 1653 is opened on the side of the I-shaped clamp 1652, a stopper 1654 is slidably connected to the inner side of the sliding hole 1653, one end of the stopper 1654 is fixedly connected to an elastic rear pad 1656 located inside the annular interlayer 16103, a limiting plate 1655 is fixedly connected to the side of the stopper 1654 and close to the elastic rear pad 1656, and a bayonet 169 is opened at the position of the notched swivel 167 corresponding to the stopper 1654.

[0082] In this structure, the stopper 1654 protruding toward the inner side of the inner shell 16101 is used to limit the rotation of the notched swivel 167 . When the stopper 1654 is subjected to thrust, its rear end will squeeze the elastic rear pad 1656 , thereby achieving the retraction of the stopper 1654 .

[0083] In one embodiment, the trigger member 1610 includes: a shaft member 161001, the shaft member 161001 is rotatably connected to the notched swivel 167, a push pin 161003 is fixedly connected to the top of the shaft member 161001, the notched swivel 167 is provided with a mounting opening 168 at the bottom end of the shaft member 161001, and an arc-shaped push plate 161002 is fixedly connected to the bottom end of the shaft member 161001 and located on the inner side of the mounting opening 168.

[0084] When the push pin 161003 is pushed and rotated by the shift block 1618, the arc-shaped push plate 161002 fixed coaxially therewith is driven to rotate. The rotation of the arc-shaped push plate 161002 pushes the stopper 1654 to retract. After the retraction, the stopper 1654 can no longer restrict the rotation of the notched swivel 167.

[0085] In one embodiment, a mounting block 1612 is fixedly connected to the center of the inner bottom of the lower shell 161 , and the bottom end of the transmission shaft 1613 is rotatably connected to the mounting block 1612 .

[0086] In one embodiment, the elastic telescopic stopper 1619 includes: a mounting groove is provided at the top of the notched swivel 167, a plate body 16191 is slidably arranged in the mounting groove, and an elastic bottom pad 16192 is fixedly connected to the bottom end of the plate body 16191.

[0087] When the plate body 16191 is subjected to force near the top, it will shrink downward, and when it shrinks back into the installation groove, the shift block 1618 can pass over the top of the plate body 16191.

[0088] In one embodiment, the position height of the No. 1 pneumatic pick 2051 is lower than the position height of the No. 4 pneumatic pick 2054, the position height of the No. 4 pneumatic pick 2054 is lower than the position height of the No. 2 pneumatic pick 2052, the position height of the No. 2 pneumatic pick 2052 is lower than the position height of the No. 5 pneumatic pick 2055, and the position height of the No. 5 pneumatic pick 2055 is lower than the position height of the No. 3 pneumatic pick 2053, that is, the No. 1 pneumatic pick 2051, the No. 4 pneumatic pick 2054, the No. 2 pneumatic pick 2052, the No. 5 pneumatic pick 2055, and the No. 3 pneumatic pick 2053 have a spirally increasing structure, and each increase is about 10MM.

[0089] The high stress torque between the threads is gradually released and the loosening is achieved by using the oscillation principle accompanied by the pressurized loosening of the drill pipe power tongs, thereby avoiding damage to the drill pipe and disassembly tools, avoiding the occurrence of dangerous accidents, and improving the efficiency of drill pipe disassembly.

[0090] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drill pipe power tongs oscillation pulse loosening device, used to assist a drill pipe power tongs (1) in disassembling an upper drill pipe (3) and a lower drill pipe (4), characterized in that: The oscillating pulse loosening device is installed between the upper clamp (101) and the lower clamp (102) of the power clamp (1); Specifically include: C-chain assembly (201); A spring (204), wherein the bottom end of the spring (204) is fixedly connected to a lower jaw housing (1021) of the lower jaw (102), the spring (204) is inclined toward the center above the lower jaw (102), the C-shaped chain assembly (201) is fixedly mounted on the top of the spring (204), a plurality of springs (204) are provided, and the plurality of springs (204) are evenly distributed along the outer side of the C-shaped chain assembly (201); A pneumatic pick (205), wherein the pneumatic pick (205) is fixedly mounted on the top of the C-shaped chain assembly (201), and a plurality of pneumatic picks (205) are provided, and the plurality of pneumatic picks (205) are evenly distributed along the outer side of the C-shaped chain assembly (201); A first tightening cylinder (202) and a second tightening cylinder (203), wherein the first tightening cylinder (202) and the second tightening cylinder (203) are both fixedly connected to a lower clamp housing (1021) of the lower clamp (102), an output end of the first tightening cylinder (202) is fixedly connected to a first end of a C-shaped chain assembly (201), and an output end of the second tightening cylinder (203) is fixedly connected to a second end of the C-shaped chain assembly (201); An air supply system is provided, wherein the air supply system is used to supply air to a first tightening cylinder (202), a second tightening cylinder (203), and a plurality of pneumatic picks (205).

2. The drill pipe power tongs oscillation pulse loosening device according to claim 1, characterized in that: The gas supply system comprises: Gas source (13); An air storage chamber (12), wherein the air outlet end of the air source (13) is connected to the air storage chamber (12); A fourth air circuit (11) and a third air circuit (7), wherein the air inlet ends of the fourth air circuit (11) and the third air circuit (7) are fixedly connected to the air storage chamber (12), the air outlet end of the third air circuit (7) is connected to a two-position three-way air valve (8), and the two air outlet ends of the two-position three-way air valve (8) are respectively connected to the first air circuit (5) and the second air circuit (6), wherein the first air circuit (5) supplies air to the forward stroke of the first tightening cylinder (202) and the second tightening cylinder (203), and the second air circuit (6) supplies air to the backward stroke of the first tightening cylinder (202) and the second tightening cylinder (203), and the air outlet end of the fourth air circuit (11) is connected to a distributor (16), and the distributor (16) has a plurality of air outlet branches, and the plurality of air outlet branches supply air to a plurality of pneumatic picks (205); The third gas path (7) is connected to a third pressure regulating valve (9) and a third switch valve (10); The fourth gas path (11) is connected to a fourth switch valve (14) and a fourth pressure regulating valve (15).

3. The drill pipe power tongs oscillation pulse loosening device according to claim 2, characterized in that: The pneumatic picks (205) have five pneumatic picks, which are sequentially distributed along the outline of the C-shaped chain assembly (201): a No. 1 pneumatic pick (2051), a No. 4 pneumatic pick (2054), a No. 2 pneumatic pick (2052), a No. 5 pneumatic pick (2055), and a No. 3 pneumatic pick (2053); The distributor (16) has an upper interface (164) for gas to enter; the distributor (16) has a first lower connector (161a), a second lower connector (161b), a third lower connector (161c), a fourth lower connector (161d), and a fifth lower connector (161e) which are sequentially distributed in an annular pattern and are all used for gas to exit; The first lower joint (161a) is connected to the first pneumatic pick (2051) via an air pipe, the fourth pneumatic pick (2054) is connected to the fourth lower joint (161d) via an air pipe, the second pneumatic pick (2052) is connected to the second lower joint (161b) via an air pipe, the fifth pneumatic pick (2055) is connected to the fifth lower joint (161e) via an air pipe, and the third pneumatic pick (2053) is connected to the third lower joint (161c) via an air pipe; The distributor (16) comprises: A lower shell (161), wherein the first lower joint (161a), the second lower joint (161b), the third lower joint (161c), the fourth lower joint (161d), and the fifth lower joint (161e) are arranged at the bottom of the lower shell (161); An upper shell (162), wherein the upper shell (162) is fixedly mounted on the top of the lower shell (161), and an upper interface (164) is arranged on the top of the upper shell (162); A notch swivel (167), a side surface of the notch swivel (167) being provided with a notch (166), the notch swivel (167) being rotatably mounted on the inner side of the lower shell (161), and the notch swivel (167) blocking four lower joints of a first lower joint (161a), a second lower joint (161b), a third lower joint (161c), a fourth lower joint (161d), and a fifth lower joint (161e), and during the rotation of the notch swivel (167), the lower joints that are not blocked are sequentially changed; A stopper assembly (165), the stopper assembly (165) being installed on the inner side of the lower shell (161), the stopper assembly (165) comprising five groups and distributed in a circular array, the stopper assembly (165) being used to prevent the notched swivel (167) from rotating; a trigger member (1610), the trigger member (1610) being rotatably mounted on the notch swivel (167) and being used to release the stopping effect of the stop assembly (165) close to the notch (166) on the notch swivel (167); An elastic telescopic stopper (1619), the elastic telescopic stopper (1619) being installed above the notched rotating ring (167) and used for transmitting a thrust for driving the notched rotating ring (167) to rotate, and when the thrust is greater than a first threshold, the elastic telescopic stopper (1619) retracts downward to give way; a transmission shaft (1613), the transmission shaft (1613) being fixedly connected to a fan blade assembly (1611), a cylindrical portion (163) being provided on the upper shell (162) and located outside the fan blade assembly (1611), and a central gear (1614) being fixedly connected to the transmission shaft (1613) and located below the fan blade assembly (1611); An inner gear ring (1617), the inner gear ring (1617) being rotationally connected to the upper shell (162), a planetary gear set (1615) being provided between the inner gear ring (1617) and the central gear (1614), and a central frame (1616) of the planetary gear set (1615) being fixedly connected to the upper shell (162); A shifting block (1618) corresponding to the triggering member (1610) and the elastic telescopic stopper (1619) is fixedly connected to the bottom of the inner gear ring (1617).

4. The drill pipe power tongs oscillation pulse loosening device according to claim 1, characterized in that: An elliptical punch (205b) is fixedly mounted on the pneumatic pick output head (205a) of the pneumatic pick (205) via a pin (205c).

5. The drill pipe power tongs oscillation pulse loosening device according to claim 3, characterized in that: The lower shell (161) comprises: an inner shell (16101), and an outer shell (16102) fixedly mounted on the outside of the inner shell (16101), wherein an annular sandwich (16103) is formed between the inner shell (16101) and the outer shell (16102); The stopper assembly (165) comprises: a rectangular hole (1651) provided on the side of the inner shell (16101); a "J"-shaped clamp (1652) is fixedly provided on the inner side of the rectangular hole (1651); a sliding hole (1653) is provided on the side of the "J"-shaped clamp (1652); a stopper (1654) is slidably connected to the inner side of the sliding hole (1653); an elastic rear pad (1656) is fixedly connected to one end of the stopper (1654) and located inside the annular interlayer (16103); a limiting plate (1655) is fixedly connected to the side of the stopper (1654) and close to the elastic rear pad (1656); and a bayonet (169) is provided on the notch swivel (167) at a position corresponding to the stopper (1654).

6. The drill pipe power tongs oscillation pulse loosening device according to claim 5, characterized in that: The trigger member (1610) comprises: a shaft member (161001), the shaft member (161001) being rotatably connected to a notched swivel (167), a push pin (161003) being fixedly connected to the top end of the shaft member (161001), a mounting opening (168) being provided at the bottom end of the notched swivel (167), and an arc-shaped push plate (161002) being fixedly connected to the bottom end of the shaft member (161001) and located inside the mounting opening (168).

7. The drill pipe power tongs oscillation pulse loosening device according to claim 6, characterized in that: A mounting block (1612) is fixedly connected to the center position of the inner bottom of the lower shell (161), and the bottom end of the transmission shaft (1613) is rotatably connected to the mounting block (1612).

8. The drill pipe power tongs oscillation pulse loosening device according to claim 6, characterized in that: The elastic telescopic stopper (1619) comprises: a mounting groove is provided at the top of the notched rotating ring (167), a plate body (16191) is slidably arranged in the mounting groove, and an elastic bottom pad (16192) is fixedly connected to the bottom end of the plate body (16191).

9. The drill pipe power tongs oscillation pulse loosening device according to claim 6, characterized in that: The position height of the No. 1 pneumatic pick (2051) is lower than the position height of the No. 4 pneumatic pick (2054), the position height of the No. 4 pneumatic pick (2054) is lower than the position height of the No. 2 pneumatic pick (2052), the position height of the No. 2 pneumatic pick (2052) is lower than the position height of the No. 5 pneumatic pick (2055), and the position height of the No. 5 pneumatic pick (2055) is lower than the position height of the No. 3 pneumatic pick (2053).

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