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HomeCatalogEXTERNAL CASING ATTACHMENTSCasing shoe BK

EXTERNAL CASING ATTACHMENTS

Casing shoe BK

BK is a casing shoe applied for directing a casing string during its running in the well bore.
There are 4 options of design:
1. BK-M are shoes with metal cap (if the customer approves, a cap is made of aluminium
alloy according to D16T GOST 4784-97 or of cast iron mark Sch20 GOST 1412-85,
default variant is aluminium);
2. BK-M are shoes with metal cap “bullet-shaped” (a cap is made of aluminium alloy
according to D16T GOST 4784-97);
3. BK-P are shoes with polymer cap. BK-P shoes can also be produced without wash ports
(“blind”). Index “G” is added to such models.
4. BK-Vr are rotating shoes with rotating eccentric cap (a cap is made of aluminium alloy
according to D16T GOST 4784-97).

Shoes with polymer-concrete cap

CODE VALUE
Casing string
nominal diameter,
mm		 Central hole
diameter, mm		 Side holes
diameter, mm		 Drift diameter, mm Connecting
threads1, according
to GOST 632-80		 Outer diameter,
mm, not more		 Length, mm Weight, kg,
not more
BK-P 89 89 40 10 80 89 108 262 7,4
BK-P 102 102 40 12 91 ОТТМ 102 110 260 5,7
BK-P 114 114 50 12 102 ОТТМ 114 127 287 8,1
BK-P 127 127 60 12 115 ОТТМ 127 141,3 285 9,9
BK-P 140 140 70 15 127 ОТТМ 140 153,7 294 15,4
BK-P 146 146 70 15 133 ОТТМ 146 166 302 15,5
BK-P 168 168 80 15 155 ОТТМ 168 187,7 316 18,6
BK-P 178 178 90 18 164 ОТТМ 178 194,5 341 19,6
BK-P 194 194 100 20 178 ОТТМ 194 216 365 28,1
BK-P 219 219 110 20 205 ОТТМ 219 245 370 35,8
BK-P 245 245 120 20 228 ОТТМ 245 270 390 43,1
BK-P 273 273 130 20 259 ОТТМ 273 298,5 384 56,6
BK-P 299 299 150 20 281 ОТТМ 299 324 389 63,4
BK-P 324 324 160 20 307 ОТТМ 324 351 400 62,6
BK-P 340 340 170 20 323 ОТТМ 340 365 405 63,6
BK-P 426 426 220 20 406 ОТТМ 426 451 433 123,5

1 Connecting thread type is agreed with the Customer. For BK-P 89, BK-P 89G the thread is produced according to GOST 633-80; for
the shoe BK-P 102, BK-P 102G, BK-M 102 the thread is produced according to TU 14-161-163-96.

Shoes with metal cap

CODE VALUE
Casing string
nominal
di		 Central hole
diameter, mm		 de holes
diameter, mm		 Drift diameter,
mm		 Connecting
threads1,
according to
GOST 632-80		 Outer diameter,
mm, not more		 Length, mm Weight, kg,
not more
BK-M 89 89 45 10 82 89 108 198 5,2
BK-M 102 102 50 12 94 ОТТМ 102 110 218 4
BK-M 114 114 55 15 107 ОТТМ 114 127 259 7,1
BK-M 127 127 60 15 119 ОТТМ 127 141,3 269 8,2
BK-M 140 140 70 15 132 ОТТМ 140 153,7 263 9,7
BK-M 146 146 70 15 138 ОТТМ 146 166 268 12,5
BK-M 168 168 80 15 160 ОТТМ 168 187,7 282 15,9
BK-M 178 178 90 20 170 ОТТМ 178 194,5 293 16,5
BK-M 194 194 100 20 185 ОТТМ 194 216 308 22,9
BK-M 219 219 110 20 210 ОТТМ 219 245 328 31,4
BK-M 245 245 120 20 236 ОТТМ 245 270 341 36,8
BK-M 273 273 130 20 264 ОТТМ 273 298,5 350 43,6
BK-M 299 299 150 20 290 ОТТМ 299 324 352 47,8
BK-M 324 324 160 20 315 ОТТМ 324 351 359 56,4
BK-M 340 340 170 20 331 ОТТМ 340 365 364 58,4
BK-M 426 426 220 20 415 ОТТМ 426 451 406 89,7

1 Connecting thread type is agreed with the Customer. For BK-M 89, BK-M 89G the thread is produced according to GOST 633-80; for
the shoe BK-M 102, BK-M 102G the thread is produced according
to TU 14-161-163-96; for the shoe BK-M 426 the thread is produced according to TU 14-3-760-78.

Bullet-shaped
shoes

CODE VALUE
Casing string
nominal diameter,
mm		 Central hole
diameter, mm		 Side holes
diameter, mm		 Drift diameter, mm Connecting
threads1, according
to GOST 632-80		 Outer diameter,
mm, not more		 Length, mm Weight, kg,
not more
BK-M 102P 102 35 15 94 ОТТМ 102 110 450 7,8
BK-M 114P 114 35 15 107 ОТТМ 114 127 465 11

1 Connecting thread type is agreed with the Customer. For BK-M 102P the thread
is produced according to TU 14-161-163-96.

Shoes with rotating
eccentric cap

CODE VALUE
Casing string
nominal diameter,
mm		 Central hole
diameter, mm		 Drift diameter after
drilling, mm		 Connecting
threads1, according
to GOST 632-80		 Outer diameter,
mm, not more		 Length, mm Weight, kg, not
ьore
BK-Vr 102 102 45 88 ОТТМ 102 110 273 5,7
BK-Vr 114 114 50 99 ОТТМ 114 127 333 9,4
BK-Vr 127 127 60 117 ОТТМ 127 141,3 347 11,4
BK-Vr 168 168 65 155 ОТТМ 168 188 427 22,1