Pulsed-jet longitudinal impactor

A technology of pulse jet and impactor

Inactive Publication Date: 2017-05-24
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] An object of the present invention is to provide a pulse jet longitudinal impactor, which

Method used

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  • Pulsed-jet longitudinal impactor
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  • Pulsed-jet longitudinal impactor

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[0032] Below in conjunction with accompanying drawing, the present invention is further described:

[0033] combine figure 1 , figure 2 As shown, this pulse jet longitudinal impactor includes a main body short circuit 1, a pump upper cover 2, a pump outer cover 3, a central rotor 4, a pump central shaft 5, a lower cover plate 6, a fixed cover nut 7, a valve body 8, a fixed cover Bolts 21, upper valve plate 9, lower valve plate 10, impact valve 11, hexagonal sleeve 12, impact joint 13; the lower end of the pump upper cover 2 and the upper end of the pump cover 3 are fixed together by threaded fitting, and the lower end of the pump upper cover 2 is connected to the central rotor 4; The upper end of the pump shaft 5 has threads and is fixed to the lower end of the central rotor 4. The pump shaft 5 passes through the boss and sits on the lower cover 6; the lower cover refers to Image 6 , the lower cover plate 6 is fixed inside the lower end of the pump cover 3, and the lower c...

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Abstract

The invention relates to a pulsed-jet longitudinal impactor. The lower end of a pump upper cover and the upper end of a pump outer cover are connected through a thread, the lower end of the pump upper cover is connected with a central rotor, the upper end of a pump middle shaft is provided with a thread, and the pump middle shaft is fixed at the lower end of the central rotor and sits on a lower cover plate through a boss; the lower cover plate is fixed inside the lower end of the pump outer cover and fixes the central rotor and the pump middle shaft inside the pump outer cover at the same time, the pump outer cover is fixed inside a main pup joint by a fixing cover nut, a valve is fixed at the lower end of the pump middle shaft, and an upper valve plate is fixed inside the valve through a fixing bolt; a lower valve plate is fixed at the upper end of an impact valve which is provided with a thread, the impact valve is in threaded connection with an impact joint which is fixed inside a hexagonal sleeve, the upper portion of the main pup joint is connected with an upper drill column while the lower portion of the same is connected with the hexagonal sleeve, and the impact valve is fixed above the hexagonal sleeve and provided with a passageway inside. The pulsed-jet longitudinal impactor is few in middle structure, low in energy consumption, large in impact force and long in service life.

Description

technical field [0001] The invention relates to a high-efficiency rock-breaking tool suitable for medium-hard to hard formations used for well drilling in the petroleum industry, in particular to a pulse jet type longitudinal impactor. Background technique [0002] In recent years, with the deepening of exploration and development of oil and gas fields, oil and gas drilling has gradually changed from shallow formations to deep formations. The rock hardness and drillability level of the formations encountered have increased, the mechanical penetration rate has decreased, the rock breaking efficiency has decreased, and the drilling cost has increased. Therefore, efficient drilling and rock breaking technology has highlighted its own importance in various drilling technologies. [0003] At present, various impactors are the main downhole power tools to improve the ROP of deep wells. Among them, the pulse type oscillation impactor is the most. By placing a certain hydraulic en...

Claims

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Application Information

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IPC IPC(8): E21B4/16
CPCE21B4/16
Inventor 汪海阁纪国栋胡志坚王灵碧龚小卫赵欢
Owner BC P INC CHINA NAT PETROLEUM CORP
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