Description
1. Application
KKQ, KKQ4 series fixed diameter hole opener is a
kind of universal hole opening tool, which is widely used in
onshore and offshore oilfield drilling hole opening. It will finish
both drilling and opening at the same time by connected with
bit.
2. Working
principle
To realize hole opening, the upper
part of hole opener will be given drilling pressure and rotary
mandrel will bring along cone to break different kinds of
formations.
3. Main
structure
KKQ series hole opener is a three
cone hole opener. The mandrel is forged by high-qualified alloy
steel and heat treated reasonablely, which buid up his
hardness.Cutting armand
supporting bracketare welded on
mandrel by specialized welding materials, which make the hole
opening more firm.
KKQ4 series hole opener is a four
cone hole opener. The mandrel is same with the manufacturing
technology of KKQ series. All the front plate, middile bowl, rear
plate and strenghten rib are connected with mandrel reasonablely
and welded with mandrel tightly, which makes the structure more
steadily. All the four cones improve the efficiency of hole
opening.
Above two series of cones asembly
interior have rolling bodies, which make cones run more reliably.
The cone assembly is changeble and different type of cones meet
various type of formations hole opening from sofy to hard.
Different cones equipped as per customers’s
requirements
The hole opener is equipped with
nozzle-changeble extension injection pipe, which clean hole quickly
and extend working life of cone. The nozzle is fixted with circlip
and specilized locking cap, which make replacement fastly and
conviniently.
4. Cone
types
KKQ series: SM type
cone-soft，medium-hard
formation;
MH type cone-medium-hard,
hard formation;
HX type of cone-hard
formation
KKQ4 series: steel tooth cone(I)-sofy
formation;
steel tooth cone(II)-hard
formation
5. Maintenance
1) After
each putting out of hole, tool surface and injection pipe interior
should be cleaned.
2) Each
nozzles should be checked and changed if they are damaged. The
method of taking out of nozzle is taking out locking cap
through nozzle by locking cap wrench.
3) Each
group of cones assembly should be checked and changed if cones or
bearings damage.
other side hole of the supporting bracket, then pin shaft 3 will be
took out by shaft puller and cone assembly will be
disconnected.
6 Specifications and
technical parameters
|
Hole
Dia.
|
Type
|
Blade
No.
|
Min.
guiding hole
|
Mandrel
Fighing
neck Diameter
|
Mandrel
I.D.
|
Upper
threads (Pin thread)
|
Lower
threads ( Box thread)
|
Overall
Length
|
|
*6”
|
KKQ**0
|
3
|
*7”1/2
|
*0”
|
3”
|
7”5/8
REG
|
7”5/8
REG
|
*9”
|
|
*6”
|
KKQ****4
|
4
|
*6”
|
*0”
|
3”1/2
|
7”5/8
REG
|
7”5/8
REG
|
**4”3/8
|
7. How to order
1) Cone type and products type should
be supply when there is a order
2) Please supply cone type and
products type when there is a need of other specifications and we
can make supplying.
