BITART type 140 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 eccentric plastic guide plug is resistant to high axial compression and bending loads;
  • During string rotation guide plug allows shoe bypassing obstacles providing uninterrupted casing or liner RIH;
  • Presence of additional option side holes adjustable opening pressure allows casing RIH with high efficiency flushing through central holes in guide plug with no risk of accidents connected with loss of circulation due to shoe plugging.

Shoe modification with plastic guide plug BITART:

Additional options
Modifications 
BITART type 140
BITART type 141
Base version +
+
Side holes
- +

Technical characteristics:

Shoes with plastic guide plug BITART type 140 are produced for equipping casings in diameter 101,60mm (4 in) up to 339,70mm (13 3/8 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 140. At customers option BITART type 140 can be equipped with additional options not included to the base set and can be produced in modification BITART type 141.

:

Side holes adjustable opening pressure during RIH the circulation goes through central holes of shoe guide plug; the side holes are closed by bursting discs, which if necessary can be activated by means of creation over pressure in casing.

Technical characteristics of shoe with eccentric plastic guide plug BITART type 140,141:

Parameter
Value
Casing OD, mm
101,60 114,30 146,05 168,28 177,80 244,48
Max. OD, mm
111,00 127,00 166,00 188,00 198,00 270,00
Min. ID after drilling-out, mm
88,00 100,00 130,00 149,00 159,00 226,00
Circulation hole diameter in guide plug, mm
22,00
27,00 30,00 30,00 35,00 35,00
Diameter of body circulation holes, mm*
22,00 22,00 22,00 22,00 26,00 26,00
Quantity of holes in guide plug, ea.*
3
Quantity of holes in body, ea.*
3
Side holes opening pressure, MPa*
5,0
Max. operating temperature,
  130,0
Type of tool joint
      OTTM, OTTG, Buttress thread
Shoe length in modification:
- OTTM
- OTTG
- Buttress thread
 

324,00
341,00
349,00
 

348,00
365,00
383,00
 

457,00
472,00
492,00
 

460,00
475,00
495,00
 

465,00
480,00
500,00
 

530,00
545,00
565,00
Weight, kg
12,0 15,0 20,0 25,0 30,0 40,0
*parameter for shoes BITART type 141