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:

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);
BK-M are shoes with metal cap “bullet-shaped” (a cap is made of aluminium alloy
according to D16T GOST 4784-97);
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.
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
CODE	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
CODE	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
CODE	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
CODE	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

EXTERNAL CASING ATTACHMENTS

Casing shoe BK