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Shaanxi Senwell Drilling Equipment Co., Ltd
Jenny(General manager)
Tel:0086-29-85370919
Fax:0086-29-85370919
E-mail:Jennysaless@vip.163.com
                sales@oiltoolsdp.com
Website:Http://www.oiltoolsdp.com
 

Variable Diameter Stabilizer

Variable Diameter Stabilizer basic infomation

Catalog: Stabilizer
Keywords: Variable Diameter Stabilizer
Tel: 0086-29-85370919
Fax: 0086-29-85370919
E-mail: Jennysaless@vip.163.com
Variable Diameter Stabilizer basic infomation

Variable Diameter Stabilizer(Adjustable Stabilizer)
 

Variable Diameter stabilizer is one of main drill tool assembly in hole guiding. During drilling in deviating and horizontal well, in view of workmanship, stabilizer OD is required to be equal or 1~2mm less than drill bit so that too small clearance between borehole wall and stabilizer usually causes stabilizer to be easily stuck during tripping out of hole.

 
However, variable diameter stabilizer solves the problem which common stabilizer can’t solve. During drilling in directional well, by use of differential pressure at nozzle produced by circulation of fluid among inside and outside of drilling string, stabilizer stretch out supporting head to reach full hole so that stabilizer equipped with different drill tools to increase or angle drop or stabilizer hole inclination. Meanwhile, when stop pump circulation, support head draw back so that stabilizer OD becomes small to improve tripping out smoothly.

 

Detail Specification:

Technical specifications and parameters for Variable Diameter stabilizer

Type

Body OD(mm)

I.D.(mm)

Support head assembly O.D.(mm)

Support head Nos.

Overall length(mm)

Box thread

Pin thread

O.D. varied

ZBW 8 3/4"

201

55

80

15

1350

NC50

NC50

211~213

ZBW 8 1/2"

204

55

80

15

1350

NC50

NC46

214~216

 

Technical specifications and parameters for Variable Diameter stabilizer

Type

Min. pressure when support head stretch out (Mpa)

Radial force of main support heads under 10Mpa differential pressure(KN)

Max. working allowed pressure (Mpa)

Max. differential pressure

ZBW 8 3/4"

0.1

513

20

40

ZBW 8 1/2"

0.1

513

20

40

Shaanxi Senwell Drilling Equipment Co.,Ltd    Jenny (General Manager)
Tel:0086-29-85370919     Fax:0086-29-85370919
Email:Jennysaless@vip.163.com     sales@oiltoolsdp.com
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