BITART type 120 and modifications

Designation:

It designed for fitting bottomhole assembly for the purpose of its direction along the wellbore and protection from damage during running and well casing.

Equipping:

It is equipped with high strength guide plug made from plastic material.

The shoe is resistant to high axial compression and bending loads which allow using it in well construction with complex profile.

Guide plug has central circulating hole, three additional side circulation holes and made in shoe body. The use of easy drilling plastic provides quick drilling-out using PDC bit without damages to the bit.

Example of conventional designation at the time of order:

BITART type XXX Box with float back valve for OK YYY thread ZZZ where,
OK casing;
XXX type (modification) of device;
YYY casing diameter;
ZZZ type of tool joint.

Advantages (features):

  • Design is fully adapted for drilling-out with PDC bit;
  • The strength of plastic guide plug used in this design is 5 times higher than the strength of concrete guide plug conventionally used in making shoes;
  • Rather than concrete plug the plastic one is not subject to destruction during transportation, mounting to casing or tripping-in hole;
  • Compact size and small weight ease the transportation, storage and mounting the shoe to casing on the rig.

Shoe modification with plastic guide plug BITART:

Additional options
Modifications 
BITART type 120
BITART type 121
Base version +
+
Side holes
+
-

Technical characteristics:

Shoes with plastic guide plug BITART type 120 are produced for equipping casings in diameter 114,3mm (4 ½ in) up to 323,85mm (12 ¾ in), can be produced with the following types of tool joints: buttress thread under GOST 632-80, buttress thread under API 5B and premium threads TMK FMC, TMK GF, TMK PF, TMK PF ET, VAM TOP.

The base version of shoe BITART type 120. At customers option BITART type 120 can be equipped with additional options not included to the base set and can be produced in modification BITART type 121.

Additional options:

Without side holes absence of additional side circulation holes in shoe body.

Technical characteristics of shoe with plastic guide plug BITART type 120, 121:


Parameter
Value
Casing OD. mm
101,60 114,30 146,05 168,28 177,80 244,48 323,85 339,70
Max. OD, mm
111,00 127,00 166,00 188,00 198,00 270,00 350,00 365,00
Min. ID after drilling-out, mm
88,00 100,00 130,00 149,00 159,00 226,00 304,00 318,00
Circulation hole diameter in guide plug, mm
60 80 100 100 110 160 180 200
Diameter of body circulation holes, mm*
20 20 22 22 22 26 26 26
Quantity of holes in body, ea*
3
Max. operating temperature,
130
Type of tool joint
OTTM, OTTG, Buttress thread
Shoe length in modification:
- OTTM
- OTTG
- Buttress thread
 


160,00
180,00
180,00
 


146,00
181,00
185,00
 


162,00
192,00
202,00
 


170,00
205,00
210,00
 


177,00
207,00
217,00
 


195,00
230,00
230,00
 


200,00
230,00
230,00
 


200,00
230,00
240,00
Weight, kg
2,5 3,0
6,0 9,0 12,0 20,0 30,0 40,0
*parameter for shoes BITART type 120