Float Collar

Float Collar

Model No: API certificate
Name: Float Collar
Application: land and offshore wells

Float collar is a casing coupling with check valve. It is one of the casing accessories. In deep wells and special wells, it can be used in combination with casing floating shoes to improve the safety of cement injection operations. In the process of casing running, one-way flow of drilling fluid in the annulus is realized to prevent the backflow of cement slurry during cement injection and to realize pressure relief and setting after cementing impact, which helps to improve the cementing quality of the cement ring and casing; at the same time, the buoyancy of the casing string is adjusted by pouring drilling fluid which is run into the casing string, so that the casing hanging weight can meet the design requirements of the casing operation.

 

When using the casing float collar, it is to control the lowering speed of the casing string to prevent the pressure variation caused by the rapid lowering, which may cause seal failure or crush the fragile formation. By pouring drilling fluid into the casing and adjusting the pressure difference between the inside and outside of the casing, it can effectively prevent the casing from being crushed.

Float Collar Parameter
Specs(mm)/(in) OD(mm) ID(mm) Height(mm) Open Hole
(mm)
Thread Connection Pressure
(MPa)
Unit Weight
(KG)
140 5 1-2 160 127.3-118.6 500 45 API Thread/
Premium Thread
35 38
168 6 5-8 187.8 153.6-144.1 550 45 API Thread/
Premium Thread
35 42
178 7 200 166-150.4 550 45 API Thread/
Premium Thread
35 56
194 7 5-8 219.1 178.4-162 550 45 API Thread/
Premium Thread
35 64
219 8 5-8 244.5 205.6-190.8 550 45 API Thread/
Premium Thread
35 72
244 9 5-8 269.7 226.6-214.3 550 70 API Thread/
Premium Thread
35 78
273 10 3-4 298 258.9-242.8 550 70 API Thread/
Premium Thread
35 98
298 11 3-4 323.9 281.5-273.6 600 70 API Thread/
Premium Thread
35 120
340 13 3-8 365 320.4-313.6 600 70 API Thread/
Premium Thread
35 148
406 16 431.8 384.1-381.3 650 70 API Thread/
Premium Thread
21 182
473 18 5-8 508 450.9 650 70 API Thread/
Premium Thread
21 230
508 20 531.2 485.7-475.7 650 70 API Thread/
Premium Thread
21 312
You also could customize the size and specs and, then we could design and manufacture them accordingly.
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