The casing head is designed with features of versatile straight-bore according to API 6A, the casing head and casing spool can be equipped with mandrel hanger and slip hanger, to handle any emergency effectively while the flange housing remains unchanged. The casing head is used to support the weight of technical casing and intermediate casing and seal the annular space between the casings, which provides a transition joint for the installation of the tubing head, Christmas tree and other wellheadsThe improvement of the casing head structure make the operation procedures simple and saves operating time.
| Casing size | Top flange size | Working pressure | Dimensions |
| 11-3/4" | 13-5/8" | 2, 000 | 470 (18.50) | 279 (10.98) | 350 (13.80) |
| 3, 000 | 470 (18.50) | 279 (10.98) | 350 (13.80) |
| 5, 000 | 520 (20.47) | 279 (10.98) | 350 (13.80) |
| 16-3/4" | 3, 000 | 444 (17.48) | 279 (10.98) | 422 (16.61) |
| 5, 000 | 457 (17.99) | 279 (10.98) | 422 (16.61) |
| 12-3/4" | 13-5/8" | 5, 000 | 520 (20.47) | 312 (12.28) | 350 (13.80) |
| 13-3/8" | 13-5/8" | 2, 000 | 470 (18.50) | 318 (12.52) | 350 (13.80) |
| 13-3/8" | 13-5/8" | 3, 000 | 470 (18.50) | 318 (12.52) | 350 (13.80) |
| 5, 000 | 520 (20.47) | 318 (12.52) | 350 (13.80) |
| 16-3/4" | 3, 000 | 470 (18.50) | 318 (12.52) | 425 (16.73) |
| 5, 000 | 520 (20.47) | 318 (12.52) | 425 (16.73) |
| 16" | 16-3/4" | 2, 000 | 445 (17.52) | 386 (15.20) | 425 (16.73) |
| 3, 000 | 445 (17.52) | 386 (15.20) | 425 (16.73) |
| 5, 000 | 457 (17.99) | 386 (15.20) | 425 (16.73) |
| 20" | 20-1/4" | 2, 000 | 490 (19.29) | 482 (18.98) | 510 (20.08) |
| 20-3/4" | 3, 000 | 490 (19.29) | 482 (18.98) | 527 (20.75) |
| 21-1/4" | 2, 000 | 490 (19.29) | 482 (18.98) | 540 (21.26 |
About JC Wellhead
Jingcheng Petroleum Machinery Manufacturing Co.,Ltd was established in 2008, we are specialized in design and manufacturing of the oilfield wellhead equipment. We - YCJC are a registered supplier for CNPC, GWDC, CCDC in China.
YCJC also engaged in abroad marketing, through these years of efforts, our wellhead equipment is exported to many countries, such as Thailand, UAE, Iran, Brazil, Argentina, USA etc. and enjoyed good reputation from the customers.
With profession engineers we also offer the R&D service to the clients who have special requirements in the oilfield drilling operation and production operation.The wellhead equipment we manufacture and supply include casing head, tubing head, casing spool, tubing spool, Gate valve, Choke valve, Check valve, X-mas tree, VR plug, Tubing hanger, casing hanger, Running tool, Wear bushing, spacer spool, flange adapter, union flange, Hammer union, Elbow, swivel joint, block cross, Block Tee, companion flange, instrument flange, weldneck flange, FC gate, FC seat, FC stem, API Clamp, API Clamp Hub
