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A technology of percussion drilling and hydraulic hammer, which is used in drilling equipment, driving devices for drilling in wellbore, and earth-moving drilling, etc., can solve the problems of short life of hydraulic impactor, inability to adjust the impact load, poor stability, etc. To achieve the effect of increasing the rate of penetration of the machine
Active Publication Date: 2013-08-14
SOUTHWEST PETROLEUM UNIV
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However, hydraulic impactors have not been widely applied and popularized at present. The main reason is that the existing hydraulic impactors have short service life, low impact frequency, poor stability and the inability to adjust the size of the impact load.
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[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0016] Such as Figure 1-7 As shown, a hydraulic hammer rod impact drilling tool is mainly composed of a turbine drive device, a rotary valve flow distribution mechanism, an impact device, an end cap 1, a hammer 12, an outer cylinder 13, an inner cylinder 14, a sealing ring 17, and a flow guide Disc 18, housing 23 and drill bit 24 are formed. It is characterized in that: the turbine driving device includes a fixed shaft 2, an upper deep groove ball bearing 3, a turbine disc 4, a turbine blade 5, a pressure plate 6, a lower deep groove ball bearing 7, a thrust bearing 8, the fixed shaft 2 and the turbine The upper deep groove ball bearing 3, the lower deep groove ball bearing 7 and the thrust bearing 8 are arranged between the disks 4, and the upper deep groove ball bearing 3 and the lower deep groove ball bearing 7 are respectively positioned by the upper sh...
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Abstract
The invention provides a hydraulic hammer rod type impact drilling tool and belongs to the field of geological exploration engineering and oil drilling. The technical scheme of the hydraulic hammer rod type impact drilling tool includes that the hydraulic hammer rod type impact drilling tool is composed of a turbine driving device, a rotary valve flow distribution mechanism, a impact device, an end cap, a punch hammer, an outer cylinder, an inner cylinder, sealing rings, a flow diversion disk, a casing and drill bit. The turbine driving device comprises a fixed shaft, an upper deep groove ball bearing, a turbine disk, turbine blades, a pressing disk, a lower deep groove ball bearing and a thrust bearing, the rotary valve flow distribution mechanism comprises an upper valve plate and a lower valve plate, and the impact device comprises an impact base, a spring and a hammer rod. When the hydraulic hammer rod type impact drilling tool is operated, the turbine driving device drives the upper valve plate to rotate, an input hole is communicated with a first overflowing hole and a second overflowing hole of the lower valve plate alternately so as to enable the punch hammer to reciprocate in the inner cylinder to achieve circulation impact on an impact base, and impact energy is transmitted to the hammer rod for rock breaking. The hydraulic hammer rod type impact drilling tool can form high frequency axial impact force for assisting rock breaking, facilitates prolonging of service life of the drill bit, improves mechanical drilling speed, and is particularly suitable for hard formation drilling.
Description
technical field [0001] The invention belongs to the fields of geological prospecting engineering and petroleum drilling, and in particular relates to a hydraulic hammer rod type percussion drilling tool. Background technique [0002] At present, ordinary rotary drilling technology is mainly used for oil and gas drilling. When drilling into hard formations or abrasive formations, pipe sticking and stick-slip vibrations often occur. These phenomena will shorten the service life of the drill bit and reduce the drilling efficiency. Drilling costs are rising. In order to improve drilling efficiency, rotary percussion drilling technology has been proposed, that is, on the basis of rotary drilling, impact energy with a certain frequency is applied to rock breaking tools. The hydraulic impactor is a typical rotary percussion drilling tool. The hydraulic impactors currently used mainly include valve type and jet type. The valve type impactor mainly realizes the cyclic impact of the...
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