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• Overview
The WellTools CLoad MHA Assembly is the essential core piece of equipment for all reliable coiled tubing operations. It incorporates four standard tools in one purpose built unit; dual flapper check valves, the safety disconnect, and a dual circulating sub. The dual circulating sub combines a conventional drop ball circulating sub and a pressure activated rupture disc.
The disconnect section has been developed to allow the operator the ability to remove it and use it as a separate unit if required.
• Design Features
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Extremely resistant to vibration and impact loads. |
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Circulation is regained when the Screws have sheared giving surface indication of successful activation. |
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Integral rupture disc in case of loss of circulation. |
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Incorporates drop ball circulation sub. |
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Interchangable Piston Insert allows different size Drop Balls to be used. |
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Shear screws cannot vibrate free during drilling applications. |
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Easily field redressable. |
• Tool Specifications
| Tool OD |
Effective Length |
Tensile Yield |
Torsional Yield |
Standard Drop Ball Sizes |
Standard Connections |
| Ø1-1/4" |
29.441" |
25,000 lbs |
310 ft-lbs |
Ø3/8” (Disconnect)
Ø5/16” (Circ. Sub) |
1.062"-16UN Box & Pin |
| Ø1-1/2" |
28.688" |
31,000 lbs |
430 ft-lbs |
Ø7/16” (Disconnect)
Ø3/8” (Circ. Sub) |
1.125"-10 SA Box & Pin |
| Ø1-11/16" |
31.157" |
34,250 lbs |
500 ft-lbs |
Ø1/2” (Disconnect)
Ø7/16” (Circ. Sub) |
1.000" AMMT Box & Pin |
| Ø2-1/8" |
36.375" |
86,000 lbs |
1,500 ft-lbs |
Ø3/4” (Disconnect)
Ø5/8” (Circ. Sub) |
1-1/2" AMMT Box & Pin |
| Ø2-7/8" |
43.312" |
167,000 lbs |
3,900 ft-lbs |
Ø7/8” (Disconnect)
Ø3/4” (Circ. Sub) |
2-3/8" PAC DSI Box & Pin |
*other sizes available on request.
**High Pressure and/or High Temperature CLoad MHA's are also available.
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