Collet Connectors For BOP Stacks Connector Brochure
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Collet Connectors Connectors for BOP stacks Drilling challenge Applications: Offshore drilling environments have ventured into increased water depths, greater pressures, and harsher environments. Collet connectors need to be reliable with a long fatigue life to help drillers improve safety, minimize operational downtime, and maximize equipment availability and uptime. ■■ BOP stack to wellhead connection ■■ LMRP to lower stack connection Features: ■■ Cameron collet connectors Our collet connectors continue evolving to provide greater bending and tension capabilities in deeper waters and higher pressures. These collet connectors are designed to withstand the bending stresses and separating forces caused by well pressure, riser tension, and vessel motion for long, reliable operation. With five models to choose from, our collet connectors meet various preload requirements to help resist hub separation. All of these collet connectors utilize metal-to-metal sealing to ensure seal integrity and perform successful disconnect when required for enhanced operational safety. ■■ ■■ High strength and stiffness with a direct load path through the connector Cameron-designed AX, CX, and AX/AT gaskets. Other gasket designs are also available Positively driven-open collet segments during unlock with a secondary unlock function for successful disconnect ■■ Inconel inlays on all sealing surfaces exposed to seawater ■■ Option of studded, flanged, or clamped tops ■■ Inherent self-locking characteristics Working pressures: up to 15,000 psi † Collet Connector Selection Cameron offers five collet connector models that meet varying connection sizes and types, preload requirements, and height restraints. Technical Specifications Preload, lbf Height, in [mm] Maximum Subsea Wellhead OD, in [mm] Maximum Connector OD, in [mm] Model 70 Up to 245,000 38.45 [797.31] 31.39 [797.31] 64.00 [1625.60] HC Up to 5.91 MM 44.00 [1117.60] 31.39 [797.31] 62.00 [1574.80] HCH4 Up to 4.34 MM 44.00 [1117.60] 27.00 [685.80] 62.00 [1574.80] EVO-Con Up to 8.92 MM 63.06 [1601.7] 30.00 [762.00] 72.00 [1828.80] DWHC Up to 12.05 MM 66.78 [1696.21] 35.25 [895.35] 75.25 [1911.35] EVO-Con* collect connector ■■ ■■ Built upon proven design Interchangeable parts allow ultimate versatility—the same connector fits various wellhead brands and sizes (including 27-in H4 and 30-in H4) ■■ Strength of DWHC with a shorter swallow ■■ Simple design has only one hydraulic circuit which uses less hydraulic fluid for locking and unlocking EVO-Con collet connector † Cameron is currently developing a 20,000 psi connector line of products Model 70* collet connector ■■ ■■ ■■ Cylinders may be easily repaired or replaced Short swallow, tapered hub profile and positive unlocking system allow disconnection at angles up to 30° 25° angles on the clamp segment faces and a large actuating piston area create a greater clamping force at a given hydraulic pressure ■■ Standard manual override ■■ Actuated by hydraulic cylinders which provide high clamping preloads Model 70 collet connector HCH4 ■■ ■■ Includes standard HC operating system and load carrying components Unique locking design includes three load shoulders on the collet segment or fingers, allowing the HC connector to lock onto an H4 wellhead and maintain a direct load path ■■ Designed specifically to fit on a mandrel-style hub ■■ Simple design has only one hydraulic circuit which uses less hydraulic fluid for locking and unlocking HCH4 collet connector HC* high-capacity collet connector ■■ Short swallow, tapered hub profile and positive unlocking system allows disconnection at angles up to 30° ■■ Shortest swallow of any major wellhead connector available on the market ■■ Large actuating piston area creates a greater preload at a given hydraulic pressure than the Model 70 ■■ Higher applied loads can be tolerated without causing hub face separation because of the higher preloads ■■ Uses annular cylinder with larger annular piston for higher locking and unlocking force ■■ Compact design minimizes height and weight ■■ Has a hydraulic secondary unlock ■■ Simple design has only one hydraulic circuit which uses less hydraulic fluid for locking and unlocking HC collet connector DWHC* deepwater, high-capacity collet connector ■■ Engineered for high loads encountered in ultra-deepwater applications ■■ Segment and hub geometry and a large actuating piston area create a greater clamping force ■■ DWHC collet connector Flange exceeds API standards with a thicker neck, a larger bolt circle, and a larger bolt diameter to match the capacity of the DWHC ■■ Hub profile accommodates high load-carrying capacity ■■ Provides 21MMlb total equivalent tension capacity, based on API design criteria ■■ Simple design has only one hydraulic circuit which uses less hydraulic fluid for locking and unlocking Operational Data and Dimensions C B C C B B A A A D D D HC connector Model 70 connector HCH4 connector C C B B A A D D EVO-Con connector DWHC connector Collet Connector Dimensions Bore wellhead size, in Model 70† 183/4 HC †† 183/4 183/4 HCH4§§ 183/4 183/4 EVO-Con‡‡ 183/4, 27 183/4, 30 DWHC 183/4 † Working pressure, psi Fluid requirements, galUS [L] Open Close A, in [mm] B, in [mm] C, in [mm] D, in [mm] Weight,§ lbm [kg] 10,000 4.97 [18.81]‡ 6.27 [23.72] 38.28 [972.31] 18.75 [476.25] 64.00 [1625.60] 13.54 [339.85] 16,000 [7530] 10,000 15,000 18.50 [70.02] 25.00 [94.63] 14.90 [56.40] 20.00 [75.70] 44.00 [1117.60] 43.71 [1110.23] 18.75 [476.25] 18.75 [476.25] 59.00 [1498.60] 62.00 [1574.80] 12.50 [317.50] 12.50 [371.50] 20,600 [9,344] 23,100 [10,478] 10,000 15,000 18.50 [70.02] 25.00 [94.63] 14.90 [56.40] 20.00 [75.70] 44.00 [1117.60] 43.72 [1110.49] 18.75 [476.25] 18.75 [476.25] 59.00 [1498.60] 62.00 [1574.80] 11.63 [295.40] 11.63 [295.40] 23,200 [10,524] 25,350 [11,499] 15,000 15,000 36.12 [136.71] 36.12 [136.71] 28.37 [107.38] 28.37 [107.38] 63.06 [1601.7] 63.06 [1601.7] 18.75 [476.23] 18.75 [476.23] 72.00 [1828.8] 72.00 [1828.8] 13.24 [336.4] 13.24 [336.4] 44,902 [20,367] 41,815 [18,967] 15,000 52.80 [199.85] 42.20 [159.73] 66.78 [1696.21] 18.75 [476.25] 75.25 [1911.35] 24.51 [622.55] 67,000 [30,391] Also available in the following sizes and working pressures—135/8 in 5000 and 10,000 psi; 163/4 in 10,000 psi. § Additional 2.49 galUS [9.43 L] is necessary for secondary unlock. ‡ Except for the EVO-Con, weights shown are for a studded top configuration. †† Also available in the following sizes and working pressure—135/8 in 15,000 psi; 211/4 in 5000 psi. §§ Also available in the following size and working pressure—163/4 in 10,000 psi. ‡‡ Dimensions shown include hydrate seal and flanged top design. Note: Hydrate seal available for all models Load Paths A load path is the way the applied loads are transmitted through the connector. The more direct the load path, the fewer components it travels through, yielding a stiffer, more stable connection. In turn, this stiff and stable connection directly affects resistance to hub face separation. All of Cameron collet connectors have direct load paths which provide high resistance to hub face separation. Model 70 connector load path HC connector load path HCH4 connector load path EVO-Con connector load path DWHC connector load path sk-154590-01R EvoCon Connector Versatility The DWHC collet connector can be used with the standard wellhead hub, as well as a unique, Cameron-designed dual wellhead hub profile. This DWHC hub allows other collet connectors to be used in applications where the loading requirements are not as severe. The DWHC collet connector locks onto the wellhead hub, while the standard HC collet connector or Model 70 lock onto the DWHC hub without any modification to either collet connector. DWHC connector HC connector DWHC hub Model 70 connector Hub Interchangeability DWHC connector HC connector Model 70 connector Standard hub EVO-Con connector § HCH4 connector H4 Hub (27 in) § The EVO-Con is available with an adapter kit for H4 27-in and 30-in wellheads. Collet Connector Data—Performance Performance Model 70 Pressure rating, psi [MPa] Bending at 0 pressure, 0 tension,† ft.lbf Bending at 0 pressure, 0 tension,† N.m Bending at 10M psi, 0 tension,† ft.lbf Bending at 10M psi, 0 tension,† N.m Bending at 10M psi, 2MM lb tension,† ft.lbf Bending at 10M psi, 2MM lb tension,† N.m Bending at 15M psi, 2MM lb tension,† ft.lbf Bending at 15M psi, 2MM lb tension,† N.m Preload, lbf Preload, N Load shoulder angle housing [connector] Maximum release angle Water depth rating, ft [m] Connector style (hub, collet, etc.) Maximum subsea wellhead OD, in [mm] Maximum connector OD, in [mm] Swallow,§ in [mm] Operating pressure, psi nominal [maximum] Operating pressure, MPa nominal [maximum] 10,000 [69.00] HC 10,000 psi 10,000 [69.00] 15,000 psi 15,000 [103.40] HCH4 10,000 psi 10,000 [69.00] 15,000 psi 15,000 [103.40] EVO-Con 27 in‡ EVO-Con 30 in‡ 3,645,000 4,048,000 5,293,000 2,961,000 4,942,000 5,488,000 7,176,000 1,706,000 3,219,000 2,313,000 15,000 [103.40] 15,000 [103.40] 15,000 [103.40] 3,316,000 5,650,000 8,550,000 11,000,000 4,014,000 4,516,000 7,660,000 11,592,000 14,914,000 3,308,000 3,045,000 3,975,000 5,800,000 9,040,000 10,100,000 4,364,000 4,485,000 4,128,000 5,389,000 7,864,000 12,257,000 13,694,000 549,000 2,063,000 2,151,000 2,109,000 2,969,000 4,800,000 7,960,000 9,100,000 744,000 2,797,000 2,916,000 2,859,000 4,025,000 6,508,000 10,792,000 12,338,000 – – 1,161,000 – 2,369,000 4,350,000 7,500,000 7,950,000 – – 1,574,000 – 3,212,000 5,898,000 10,169,000 10,779,000 245,000 1,090,000 25° [25°] 4,385,000 19,505,000 25° [25°] 5,910,000 26,289,000 25° [25°] 4,740,000 21,085,000 45° [0°] 4,337,000 19,292,000 45° [0°] 5,513,008 24,523,000 45° [0°] 8,922,000 39,687,000 45° [0°] 12,050,000 53,601,000 25° [10°] ≤30° ≤10,000 [3,048] ≤30° ≤10,000 [3,048] ≤30° ≤10,000 [3,048] 4° ≤10,000 [3,048] 4° ≤10,000 [3,048] 4° ≤10,000 [3,048] 4° 4° ‡ ≤10,000 [3,048] ≤10,000 [3,048] Collet with hub Collet with hub Collet with hub Collet with hub Collet with hub Collet with hub Collet with hub Collet with hub 31.39 [97.31] 31.39 [797.31] 31.39 [797.31] 27.00 [685.80] 27.00 [685.80] 27.00 [685.80] 30.00 [762.00] 64.00 [1,625.60] 59.00 [1,498.60] 62.00 [1,574.80] 59.00 [1,498.60] 62.00 [1,574.80] 72.00 [1,828.80] 72.00 [1,828.80] 75.25 [1,911.35] 13.38 [339.85] 1,500 [3,000] 12.50 [17.50] 1,500 [3,000] 12.50 [317.50] 1,500 [3,000] 11.63 [295.40] 1,500 [3,000] 11.63 [295.40] 1,500 [3,000] 11.51 [292.35] 1,500 [3,000] 10.30 [20.60] 10.30 [20.60] 10.30 [20.60] 10.30 [20.60] 10.30 11.51 [292.35] 1,500 [2,000 max]†† 10.30 [13.70] † 10.30 [20.60] Ratings are based on API allowable stresses for normal design loads. Bending capacities listed above are for the connector. The top connection will provide bending capacity limitations. Wellhead datum to bottom of connector. If the hydrate seal is used, the swallow will increase by approximately 2 in [50.8 mm]. The 4° release angle limit applies to initial connector/wellhead lift off of 0 to 1 in [25.4 mm]. For greater than 1 in [25.4 mm] of lift off, the connector can be rotated up to 6° while clearing the wellhead. †† Exceeding 2,000 psi maximum lock pressure may result in damage of the 27-in wellhead. §§ Exceeding 1,500 maximum lock pressure may result in damage of the wellhead. ‡‡ Interchange kit available for 27-in and 30-in H4 profiles. § ‡ Additional options and capacities are available. Contact your Cameron representative for more information. DWHC 35.25 [895.35] 24.51 [622.55] 1,500 [1,500 max]§§ 10.30 [20.60] Collet Connectors cameron.slb.com/colletconnectors * Mark of Schlumberger Other company, product, and service names are the properties of their respective owners. Copyright © 2017 Schlumberger. All rights reserved. 17-DRL-257882
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