CN1121979A

CN1121979A - Supercharged hydraulic drilling tool

Info

Publication number: CN1121979A
Application number: CN 94104934
Authority: CN
Inventors: 牛中元; 牛子章
Original assignee: 王春然
Priority date: 1994-05-09
Filing date: 1994-05-09
Publication date: 1996-05-08

Abstract

The booster-type hydraulic drilling tool for petroleum or geological drilling has an external and an internal pipes, between which an annular space is formed, where ring piston and ring plug rod are arranged from top to bottom. Said ring piston boosts the liquid and high-pressure liquid pushes the ring plug rod to realize drilling pressure. Said external pipe delivers torque via spline to telescopic ring plug rod and in turn to drill bit to make drill bit rotate, so reducing axial load of external pipe.

Description

Supercharged hydraulic drilling tool

Supercharged hydraulic drilling tool belongs to petroleum geology drilling technology field, before the present invention, oil both domestic and external and geological drilling all use the drill string deadweight that the stratum is applied the pressure of the drill, the shortcoming that above technology exists is: 1. owing to be subjected to the drill string of axial compression very long, drill string is compressed against on the borehole wall, and frictional force makes the pressure when creeping into inaccurate.2. be subjected to the jumping chisel post of axial heavy load, during drilling tool axial vibration, will reduce drilling speed and drill tool life.The objective of the invention is: adopt the novel hydraulic drilling tool, reduce the drill string axial load, reach safety, high-quality, economic drilling well.Main points of the present invention are: supercharged hydraulic drilling tool is installed in the rigid drilling bottom, throttling pressurization by inner body, highly pressurised liquid will act on the ring taps bar of bottom, connect drill bit and telescopic ring taps bar, can change hydraulic thrust into the pressure of the drill.

Drilling tool structure such as Fig. 1, Fig. 2, Fig. 3, Fig. 4.

By illustrating structure, the structure of drilling tool is made up of top connection part 1, roof pressure cap spare 2, venting plug spare 3, nozzle member 4, last outer tube part 5, floating pipe fitting 6, interior pipe cap spare 7, oil filler plug spare 8, interior tube body spare 9, following outer tube part 10, ring taps rod member 11, lower contact part 12, elastic circlip spare 13 and " O " RunddichtringO spare 14, part 15, part 16, part 17, part 18, part 19.

Interior pipe cap 7 and interior tube body 9 are suspended on the urceolus, by the sealing that " O " RunddichtringO 17 is realized between part 5, the part 9, form annular piston referring to Fig. 1, Fig. 3 by part 2, part 6, part 4, part 13, part 14, part 15." O " RunddichtringO spare 14, part 16 are realized the interior external diameter sealing to annular piston, and " O " RunddichtringO spare 18, part 19 are realized the interior external diameter sealing of ring taps bar, also can stretch mutually by the spline transfer torque between part 10, the part 11, as Fig. 2.Fig. 4 explanation can be processed into a part with part 2, part 6, and nozzle 4 can be fixing with welding.

Essential implementation:

1. inciting somebody to action everywhere by technical condition, connecting thread screws.

2. instrument is placed in oblique position, dismantles venting plug 3, oil filler plug 8, inject hydraulic oil, treat steam vent discharge oil, stop oiling, successively screw part 3, part 8 at oil filler point.

3. when creeping into, can produce hydraulic thrust behind the turn on pump and on drill bit, form the pressure of the drill.

4. rotation drilling tool by the spline structure between part 10, the part 11, as Fig. 2, is passed to drill bit with moment of torsion, implements rotary drilling.

5. when overhauling, need by specification on the drilling tool assembling and disassembling stand, to overhaul.

Claims

1. supercharged hydraulic drilling tool of being made up of parts such as urceolus, inner core, annular piston, ring taps bars is characterized in that:

A. inner core of being made up of part 7, part 9 and the urceolus of being made up of part 5, part 10 have constituted the annular space that sectional area does not up and down wait and is interconnected, and sealed annular piston of interior external diameter and ring taps bar are arranged in the annular space from top to bottom.

B. between ring taps rod member 11 and the following outer tube part 10 spline structure is arranged, can slide relatively with flexible.

2. by the described supercharged hydraulic drilling tool of claim 1, the part 2 in the annular piston, part 6 can be processed into a part, as Fig. 4.

3. by the described supercharged hydraulic drilling tool of claim 1, it is characterized in that: all sealings allow without form.

4. by the described supercharged hydraulic drilling tool of claim 1, it is characterized in that: nozzle 4 can be that welding is fixing.