CN102003164A - Dropped initiation device - Google Patents
Dropped initiation device Download PDFInfo
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- CN102003164A CN102003164A CN2010105329591A CN201010532959A CN102003164A CN 102003164 A CN102003164 A CN 102003164A CN 2010105329591 A CN2010105329591 A CN 2010105329591A CN 201010532959 A CN201010532959 A CN 201010532959A CN 102003164 A CN102003164 A CN 102003164A
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- blind hole
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Abstract
The invention discloses a dropped initiation device which is suitable for impacted initiation perforating operation transmitted by oil pipes of an oil well. The device consists of a dropped primer and a transmission detonation joint which are independent to each other; the dropped primer consists of a rod body and a rod point which are in screw connection, and a delay firing mechanism and priming system components which are arranged in the rod body and the rod point; the transmission detonation joint is composed of a guide sleeve and a gun joint which are in screw connection, and a booster which is arranged in the gun joint. When in perforating operation, the upper end and the lower end of the transmission detonation joint are respectively connected with the oil tube and a perforating gun; when the transmission detonation joint drops into a destination layer in the well and the dropped primer is dropped to the destination along the oil tube, a cone boss at the upper end of the gun joint is located in a V-shaped hollowness at the lower end of the rod point; after a certain delay, the delay firing mechanism fires the priming system components to output a high speed jet flow; the high speed jet flow passes through the outer wall of the rod point and the gun joint, and then ignites the transmission detonation joint, thereby igniting perforating bullets and finishing the perforating operation. The device is safe, reliable and low in cost.
Description
Technical field
The invention belongs to oil gas well oil tube transmission perforation operation field, relate generally to a kind of priming device, relate in particular to a kind of releasing type priming device.
Background technology
Caber impact initiation perforation is a kind of important detonation mode in oil gas well tubing transmission (TCP) perforating job.During the caber perforating job, general earlier priming device being directly connected in the perforation construction pipe string is lowered in the construction well with construction pipe string, and during perforation, operating personnel directly drop into a caber at well head, the descending impact initiation device of caber.Though this traditional caber impact initiation perforation mode has advantages such as simple to operate, that perforation is with low cost, but also have following defective: (1) caber might be hung rod in the process of advancing, can't strike priming device, bring potential safety hazard for follow-up fishing.(2) possibility of objective reality initiator misfire in case take place, just must propose oil pipe, changes perforator, removes and incurs loss through delay the duration, increases outside the cost, has also reduced safety.(3) if be hampered in the process that perforation pipe string is gone into the well, pier bores, and produces violent pressure pulse and can make the initiator accidental ignition, causes the perforation accident of missing.(4) for the hole condition of superhigh temperature owing to have priming in the initiator, so its heatproof temperature and heatproof time be subjected to very big restriction, be difficult in the ultradeep well of superhigh temperature, use, limited the range of application of impact initiation perforation mode).(5) the oil gas well that detonates for some layering, owing to require perforator holdup time in well to reach a couple of days, same because the restriction of initiator heatproof time can't be adopted impact initiation perforation mode, can not bring into play the superiority of this detonation mode.
Summary of the invention
The technical problem to be solved in the present invention is at the problem that existing caber impact initiation perforating job exists, to provide a kind of safe, reliable and low releasing type priming device of cost.
For solving the problems of the technologies described above, priming device provided by the invention comprises throws in initiator and transmission detonation joint; Described input initiator contains barred body, the time-delay firing lock, the priming system assembly, the rod point, the upper end of barred body is provided with fishing head, the lower end edge axis is provided with first blind hole, the opening end of first blind hole is provided with internal thread, the bottom of first blind hole is provided with a plurality of entrance pressure passages that communicate with the barred body external diameter, the time-delay firing lock is installed in first blind hole, the sharp epimere outer wall of rod is provided with external screw thread and seal groove and hypomere and is provided with circumferential V-shaped groove near port position, be provided with second blind hole along excellent spivot line direction upper end and the lower end is provided with the V-arrangement recess, be provided with many discharge opeing inclined holes that lead to circumferential V-shaped groove in the V-arrangement recess, the priming system assembly is installed in second blind hole; Rod sharp epimere and the barred body lower end firing lock that is threaded and delays time with sealing means is adjacent with the priming system assembly; Described transmission detonation joint contains guide cylinder and has the body of a gun joint of detonating primer, the sidewall of guide cylinder is provided with the husky passage of row and many group production fluid return ports, the head front end of body of a gun joint is provided with the cone boss and the head rear end that are complementary with described V-arrangement recess and is provided with external screw thread, the afterbody of body of a gun joint is provided with the rifle button that is connected with perforating gun, body of a gun joint inside is provided with in the center propagation of explosion hole of head front end with extraneous not conducting, and detonating primer is arranged in propagation of explosion hole, center; The lower end of guide cylinder is threaded with the head rear end of body of a gun joint; During perforating job, the guide cylinder upper end is connected with oil pipe, the afterbody of body of a gun joint is connected with perforating gun, when described transmission detonation joint throw along oil pipe with oil pipe target zone and described input initiator in the well put in place after, described cone boss is positioned in the described V-arrangement recess, through after the certain time-delay, described time-delay percussion assembly is pulled the trigger described priming system assembly output high-speed jet, and the described detonating primer of ignition behind the outer wall of described excellent point and described body of a gun joint is passed in high-speed jet.
According to the present invention, described time-delay firing lock is dynamo-electric time-delay firing lock, it comprises mechanical pressure switches, spring, watch box, heatproof battery, collet and contains delay circuit and the detonation chain plate of firing circuit, the cylinder of mechanical pressure switches is provided with and is used for spacing boss, watch box is that U-shaped cover and bottom are provided with the through hole of diameter greater than described boss diameter, and watch box is enclosed within the outside of described heatproof battery; Mechanical pressure switches, spring and heatproof battery are put into described first blind hole successively, and mechanical pressure switches is positioned at first blind hole bottom, its boss points to the opening end of first blind hole, and spring one end is enclosed within on the boss of mechanical pressure switches, and the other end withstands on the bottom of watch box; Described priming system assembly contains pipe cap, electric cap and cumulative propagation squib, cumulative propagation squib and electric cap are placed in described second blind hole successively and pipe cap is enclosed within the electric cap outside, be placed on the port of second blind hole behind the detonation chain plate overcoat collet, the output of its firing circuit links to each other with the input of electric cap, and the output of heatproof battery links to each other with the delay circuit of detonation chain plate.
According to the present invention, described time-delay firing lock is a clock and watch time-delay firing lock, it comprises the clock and watch delayer, preloading spring, steady pin, casing for clock and watch and firing pin, casing for clock and watch is a cylinder, be circumferentially with two sections axisymmetric arc-shaped slots along its cylinder, then be provided with two sections axisymmetric straight line grooves along the cylinder generatrix direction, the terminal of two arc-shaped slots and two corresponding one by one communicating of straight line groove, the clock and watch delayer is connected in the inner chamber of casing for clock and watch, preloading spring is enclosed within on the rotor of clock and watch delayer, and the front end and the firing pin of rotor are connected, steady pin crosses the corresponding respectively initiating terminal that is supported on two arc-shaped slots of firing pin afterbody and steady pin two ends, clock and watch time-delay firing lock integral body is placed in described first blind hole, and described firing pin points to the opening end of first blind hole; Described priming system assembly contains igniter cap, stab detonator and cumulative propagation squib, and cumulative propagation squib and stab detonator are placed in described second blind hole successively, and igniter cap is enclosed within the outside of stab detonator, and the input port of igniter cap is over against described firing pin.
The present invention also comprises a rubber pad, and this rubber pad is installed in the V-arrangement recess port of described barred body.
Overall technology effect of the present invention is embodied in the following aspects:
When (one) adopting the present invention to carry out perforating job, in case when initiator occurring throwing in and hanging rod, time-delay percussion lock meeting excites the priming system module, salvages the potential safety hazard that exists thereby eliminated; And when throwing in the initiator misfire, the whole construction oil pipe need not be proposed, and need only be subjected to the temperature back of losing efficacy to salvage and throw in rod for a long time at initiator, throw new input initiator again again, neither incur loss through delay the duration, reduced construction cost again, realize safety operation.
(2) because interior non-priming of the transmission detonation joint among the present invention and firing lock, if so in perforation pipe string is gone into the well process, be hampered, pier bores, the phenomenon that yet can not occur accidental ignition when producing violent pressure pulse can not cause mistake perforation accident, has strengthened the safety of perforating job.
(3) when the present invention when the superhigh temperature hole condition is used, has only 20min owing to throw in the initiator running, the priming system module that it has during this period of time can be born 250 ℃ high temperature fully, and the high temperature that the booster explosive in the transmission detonation joint generally can bear is 250 ℃/48h, therefore, the present invention can be competent at fully in superhigh temperature and ultradeep well and uses.
(4) the oil gas well that detonates for some layering promptly requires perforator holdup time in well to reach a couple of days, has only the releasing type of employing detonation mode just can finish, and therefore, it is strong that the present invention has compliance, the characteristics that range of application is wide.
Description of drawings
Fig. 1 forms schematic diagram for the structure of the present invention's first preferred embodiment.
Fig. 2 is that the input initiator structure shown in Fig. 1 is formed schematic diagram.
Fig. 3 is the transmission detonation joint schematic diagram shown in Fig. 1.
Fig. 4 is for throwing in the descending view that puts in place of initiator in the perforating job.
Fig. 5 forms schematic diagram for the input initiator structure in the present invention's second preferred embodiment.
Fig. 6 is the composition schematic diagram of clock and watch shown in Figure 5 time-delay firing lock.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 1, first preferred embodiment of releasing type priming device of the present invention is formed by throwing in initiator 1 and transmission detonation joint 2, under user mode not, throws in initiator 1 and transmission detonation joint 2 independence separately.
According to shown in Figure 2, throw in initiator 1 and comprise barred body 1-1, time-delay firing lock, priming system assembly, excellent sharp 1-11 and rubber pad 1-12.The upper end of barred body 1-1 is provided with fishing head, and the lower end edge axis is provided with first blind hole, and first blind hole is two rank shoulder holes, and the outermost macropore of first blind hole is provided with box thread, and the bottom minimum aperture of first blind hole is provided with a plurality of entrance pressure passages that communicate with barred body 1 external diameter.The time-delay firing lock is dynamo-electric time-delay firing lock, and it comprises mechanical pressure switches 1-2, spring 1-3, watch box 1-4, heatproof battery 1-5, collet 1-6 and contains delay circuit and the detonation chain plate 1-7 of firing circuit.The cylinder of mechanical pressure switches 1-2 is provided with seal groove and an end and is provided with and is used for spacing boss.Watch box 1-4 is the U-shaped cover, and its outer wall is provided with screw thread and the bottom is provided with the through hole of diameter greater than the boss diameter, and watch box 1-4 is enclosed within the outside of heatproof battery 1-5.Mechanical pressure switches 1-2 installs first blind hole bottom that is placed on barred body 1 behind the sealing ring, and its boss points to uncovered, and the end face of the other end then is positioned on first cascaded surface in first blind hole.Watch box 1-4 is threaded with barred body 1 and locate on second cascaded surface in first blind hole bottom, in the space of spring 1-3 between mechanical pressure switches 1-2 and watch box 1-4, spring 1-3 one end is enclosed within on the boss of mechanical pressure switches 1-2, and the other end withstands on the bottom of watch box 1-4.The sharp 1-11 of rod upper end is provided with second blind hole and is two rank shoulder holes, the lower end ecto-entad is provided with cylinder shoulder hole and V-arrangement recess successively, its epimere outer wall is provided with external screw thread and seal groove, be provided with circumferential V-shaped groove at hypomere near port position, be connected by the box thread of its external screw thread after the sharp 1-11 epimere of rod is installed sealing ring, be provided with many discharge opeing inclined holes that lead to circumferential V-shaped groove in the V-arrangement recess with barred body 1-1 lower end.The priming system assembly contains pipe cap 1-8, electric cap 1-9 and cumulative propagation squib 1-10.Cumulative propagation squib 1-10 is installed in the aperture of second blind hole, be placed on behind the electric cap 1-9 outer cover pipe cap 1-8 in the macropore of excellent sharp 1-11 second blind hole and adjacent with cumulative propagation squib 1-10, the energy-gathering jetting that the isolation thickness of the V-arrangement recess of excellent sharp 1-11 should satisfy cumulative propagation squib 1-10 can penetrate this thickness and can reliably ignite detonating primer in the transmission detonation joint 2.Be placed on the macropore port of second blind hole behind the detonation chain plate 1-7 overcoat collet 1-6, the output of its firing circuit links to each other with electric cap 1-9 input.The output of heatproof battery 1-5 links to each other with the delay circuit of detonation chain plate 1-7.Rubber pad 1-12 is bonded in the cylinder shoulder hole of excellent sharp 1-11 by seccotine.
According to shown in Figure 3, transmission detonation joint 2 is made of guide cylinder 2-1 and the body of a gun joint 2-2 that has detonating primer 2-3.Guide cylinder 2-1 upper end is provided with public tubing thread, this pipe thread is connected with oil pipe by box cupling, the lower end is provided with the ladder locating hole that is connected with body of a gun joint 2-2, the ladder macropore is provided with box thread, the sidewall of ladder aperture is provided with the husky passage 2-4 of row of two symmetries, top certain distance at the husky passage 2-4 of row is provided with many group production fluid return port 2-5, and every group of production fluid return port 2-5 contains uniform vertically four or a plurality of through hole.The head rear end of body of a gun joint 2-2 is provided with one section external screw thread, and external screw thread the place ahead is taper and cylinder assembly, and conical nose is provided with excellent sharp 1-11 and goes up the cone boss that the V-arrangement recess is complementary; The afterbody of body of a gun joint 2-2 is provided with the rifle button that is connected with perforating gun; Establish propagation of explosion hole, center and head one end and not conducting of the external world in the body of a gun joint 2-2., suppress the place, propagation of explosion hole, center that the detonating primer 2-3 that forms is positioned at the head back segment by high explosive.The lower end of guide cylinder 2-1 is threaded with body of a gun joint 2-2 head rear end.
According to shown in Figure 4, when the releasing type priming device of using first preferred embodiment carries out perforating job, at first transmission detonation joint 2 is not connected with the input of oil pipe 3 with perforating gun 4 by the tubing thread of guide cylinder 2-1 upper end and the rifle deduction of points of lower end, and is delivered to target zone by oil pipe 3 with perforation pipe string; After pipe string school is dark, to throw in initiator 1 at well head puts in the oil pipe 3, in the descending process of throwing in initiator 1, liquid enters barred body 1-1 inner chamber by four entrance pressure passages in the well, continuous increase along with fluid pressure, force the mechanical pressure switches 1-2 in the time-delay firing lock to move down, under the cushioning effect of spring 1-3, the boss of mechanical pressure switches 1-2 be inserted into gently in the bottom through-hole of watch box 1-4 and with heatproof battery 1-5 conducting, heatproof battery 1-5 begins to power and starts delay circuit on the detonation chain plate 1-7; Subsequently, throw in initiator 1 and import in the transmission detonation joint 2, and the cone boss of body of a gun joint 2-2 is positioned in the V-arrangement recess of excellent sharp 1-11 end face by guide cylinder 2-1; After this, after the delay time of delay circuit is used up, the firing circuit conducting is also exported firing current, under the firing current effect, electric cap 1-9 detonates, and ignites cumulative propagation squib 1-10, and ignition detonating primer 2-3 behind the outer wall of excellent sharp 1-11 and body of a gun joint 2-2 is passed in the high-speed jet of its output in succession, thereby the ignition perforating bullet is finished perforating job.
According to shown in Figure 5, second preferred embodiment of releasing type priming device of the present invention and the main difference part of first preferred embodiment are that the time-delay firing lock of throwing in the initiator 1 is different with the priming system assembly, and simultaneously, the structure of barred body 1-1 slightly changes.The priming system assembly is by being made up of igniter cap 1-8 ' stab detonator 1-9 ' and cumulative propagation squib 1-10.First blind hole of barred body 1-1 is two rank ladder blind holes, and clock and watch time-delays firing lock is installed in the aperture of first blind hole and firing pin 8 sweeps away.Excellent sharp 1-11 difference is that segment length is than installing the stab detonator 1-9 ' that is with igniter cap 1-8 ' on it in the macropore in short and second blind hole in the sharp 1-11 of rod and first preferred embodiment, and the aperture of second blind hole is still installed cumulative propagation squib 1-10.
According to shown in Figure 6, clock and watch time-delay firing lock is made of clock and watch delayer 5, preloading spring 6, steady pin 9, casing for clock and watch 7 and firing pin 8.Casing for clock and watch 7 is a cylinder, is circumferentially with two sections axisymmetric arc-shaped slot 7-1 along its cylinder, and the arc length of arc-shaped slot 7-1 is decided according to defer time; Then be provided with two sections axisymmetric straight line groove 7-2 along the cylinder generatrix direction, and the terminal of two arc-shaped slot 7-1 communicates with corresponding straight line groove 7-2 all.Clock and watch delayer 5 is fixedly mounted in the inner chamber of casing for clock and watch 7, preloading spring 6 is enclosed within on the rotor 5-1 of clock and watch delayer 5, and the front end of rotor 5-1 and firing pin 8 are connected, and steady pin 9 crosses the corresponding respectively initiating terminal that is supported on two arc-shaped slot 7-1 of firing pin afterbody and steady pin 9 two ends.
When the releasing type priming device of using second preferred embodiment carries out perforating job, transmission detonation joint 2 is not connected with the input of oil pipe 3 with perforating gun 4 by the tubing thread of guide cylinder 2-1 upper end and the rifle deduction of points of lower end, and is delivered to target zone by oil pipe 3 with perforation pipe string; After school, pipe string location is dark, start the clock and watch delayer 5 of clock and watch time-delay firing lock at well head, and will throw in initiator 1 and put in the oil pipe 3, clock and watch delayer 5 is in timing course, its rotor 5-1 drives the two ends of steady pin 9 to carry out circumferentially moving along arc-shaped slot 7-1 by firing pin 8, when the two ends of steady pin 9 move to straight line groove 7-2 place, firing pin 8 is pulled the trigger the stab detonator 1-9 ' in the priming system assembly downwards under the effect of preloading spring 6, ignite cumulative propagation squib 1-10, the high-speed jet of its output is ignited detonating primer 2-3 after passing the outer wall of excellent sharp 1-11 and body of a gun joint 2-2 in succession, thereby the ignition perforating bullet is finished perforating job.
Claims (4)
1. releasing type priming device, comprise and throw in initiator (1) and transmission detonation joint (2), it is characterized in that: described input initiator (1) contains barred body (1-1), the time-delay firing lock, the priming system assembly, rod point (1-11), the upper end of barred body (1-1) is provided with fishing head, the lower end edge axis is provided with first blind hole, the opening end of first blind hole is provided with internal thread, the bottom of first blind hole is provided with a plurality of entrance pressure passages that communicate with barred body (1) external diameter, the time-delay firing lock is installed in first blind hole, rod point (1-11) epimere outer wall is provided with external screw thread and seal groove and hypomere and is provided with circumferential V-shaped groove near port position, rod point (1-11) axis direction upper end, edge is provided with second blind hole and the lower end is provided with the V-arrangement recess, be provided with many discharge opeing inclined holes that lead to circumferential V-shaped groove in the V-arrangement recess, the priming system assembly is installed in second blind hole; Rod point (1-11) epimere and barred body (1-1) the lower end firing lock that is threaded and delays time with sealing means is adjacent with the priming system assembly; Described transmission detonation joint (2) contains guide cylinder (2-1) and has the body of a gun joint (2-2) of detonating primer (2-3), the sidewall of guide cylinder (2-1) is provided with row's husky passage (2-4) and many group production fluid return ports (2-5), the head front end of body of a gun joint (2-2) is provided with the cone boss and the head rear end that are complementary with described V-arrangement recess and is provided with external screw thread, the afterbody of body of a gun joint (2-2) is provided with the rifle button that is connected with perforating gun, body of a gun joint (2-2) inside is provided with in the center propagation of explosion hole of head front end with extraneous not conducting, and detonating primer (2-3) is arranged in propagation of explosion hole, center; The lower end of guide cylinder (2-1) is threaded with the head rear end of body of a gun joint (2-2); During perforating job, guide cylinder (2-1) upper end is connected with oil pipe, the afterbody of body of a gun joint (2-2) is connected with perforating gun, when described transmission detonation joint (2) throw along oil pipe (3) with oil pipe (3) target zone and described input initiator (1) in the well put in place after, described cone boss is positioned in the described V-arrangement recess, through after the certain time-delay, described time-delay firing lock is pulled the trigger described priming system assembly output high-speed jet, and high-speed jet is ignited described detonating primer (2-3) after passing the outer wall of described rod point (1-11) and described body of a gun joint (2-2).
2. releasing type priming device according to claim 1, it is characterized in that: described time-delay firing lock is dynamo-electric time-delay firing lock, it comprises mechanical pressure switches (1-2), spring (1-3), watch box (1-4), heatproof battery (1-5), collet (1-6) and contain delay circuit and the detonation chain plate of firing circuit (1-7), the cylinder of mechanical pressure switches (1-2) is provided with and is used for spacing boss, watch box (1-4) overlaps for U-shaped and the bottom is provided with the through hole of diameter greater than described boss diameter, and watch box (1-4) is enclosed within the outside of described heatproof battery (1-5); Mechanical pressure switches (1-2), spring (1-3) and heatproof battery (1-5) are put into described first blind hole successively, and mechanical pressure switches (1-2) is positioned at first blind hole bottom, its boss points to the opening end of first blind hole, spring (1-3) end is enclosed within on the boss of mechanical pressure switches (1-2), and the other end withstands on the bottom of watch box (1-4); Described priming system assembly contains pipe cap (1-8), electric cap (1-9) and cumulative propagation squib (1-10), cumulative propagation squib (1-10) and electric cap (1-9) are placed in described second blind hole successively and pipe cap (1-8) is enclosed within electric cap (1-9) outside, be placed on the port of second blind hole behind detonation chain plate (1-7) the overcoat collet (1-6), the output of its firing circuit links to each other with the input of electric cap (1-9), and the output of heatproof battery (1-5) links to each other with the delay circuit of detonation chain plate (1-7).
3. releasing type priming device according to claim 1, it is characterized in that: described time-delay firing lock is a clock and watch time-delay firing lock, it comprises clock and watch delayer (5), preloading spring (6), steady pin (9), casing for clock and watch (7) and firing pin (8), casing for clock and watch (7) is a cylinder, be circumferentially with two sections axisymmetric arc-shaped slots (7-1) along its cylinder, then be provided with two sections axisymmetric straight line grooves (7-2) along the cylinder generatrix direction, the terminal of two arc-shaped slots (7-1) communicates with two straight line grooves (7-2) are corresponding one by one, clock and watch delayer (5) is connected in the inner chamber of casing for clock and watch (7), preloading spring (6) is enclosed within on the rotor (5-1) of clock and watch delayer (5), and the front end of rotor (5-1) and firing pin (8) are connected, steady pin (9) cross firing pin afterbody and steady pin (9) two ends respectively correspondence be supported on the initiating terminal of two arc-shaped slots (7-1), clock and watch time-delay firing lock integral body is placed in described first blind hole, and described firing pin (8) points to the opening end of first blind hole; Described priming system assembly contains igniter cap (1-8 '), stab detonator (1-9 ') and cumulative propagation squib (1-10), cumulative propagation squib (1-10) and stab detonator (1-9 ') are placed in described second blind hole successively, and igniter cap (1-8 ') is enclosed within the outside of stab detonator (1-9 '), and the input port of igniter cap (1-8 ') is over against described firing pin (8).
4. according to claim 1 or 2 or 3 described releasing type priming devices, it is characterized in that: also comprise a rubber pad (1-12), this rubber pad (1-12) is installed in the V-arrangement recess port of described barred body (1-1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010532959.1A CN102003164B (en) | 2010-11-04 | 2010-11-04 | Dropped initiation device |
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|---|---|---|---|
| CN201010532959.1A CN102003164B (en) | 2010-11-04 | 2010-11-04 | Dropped initiation device |
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| CN102003164A true CN102003164A (en) | 2011-04-06 |
| CN102003164B CN102003164B (en) | 2014-05-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767207A (en) * | 2016-12-22 | 2017-05-31 | 河北工程大学 | A kind of CUMULATIVE BLASTING device |
| CN109681153A (en) * | 2019-01-18 | 2019-04-26 | 西安物华巨能爆破器材有限责任公司 | A kind of perforating oil gas well percussion primer |
| CN117307110A (en) * | 2023-12-01 | 2023-12-29 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
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| CN201620848U (en) * | 2009-11-27 | 2010-11-03 | 中国兵器工业第二一三研究所 | Vertical well orientation multi-pulse increase-benefit perforating device |
| CN201851099U (en) * | 2010-11-04 | 2011-06-01 | 西安物华巨能爆破器材有限责任公司 | Drop type priming device |
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| CN106767207A (en) * | 2016-12-22 | 2017-05-31 | 河北工程大学 | A kind of CUMULATIVE BLASTING device |
| CN109681153A (en) * | 2019-01-18 | 2019-04-26 | 西安物华巨能爆破器材有限责任公司 | A kind of perforating oil gas well percussion primer |
| CN117307110A (en) * | 2023-12-01 | 2023-12-29 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
| CN117307110B (en) * | 2023-12-01 | 2024-02-27 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
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