| | | |
| Name | | Jurisdiction of Formation |
| Copano Energy Finance Corporation | | Delaware |
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| ScissorTail Energy, LLC | | Delaware |
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| Cimmarron Gathering, LP | | Texas |
| |
| Copano Field Services/Copano Bay, L.P. | | Texas |
| |
| Copano Field Services/South Texas, L.P. | | Texas |
| |
| Copano Field Services/Agua Dulce, L.P. | | Texas |
| |
| Copano Field Services/Central Gulf Coast, L.P. | | Texas |
| |
| Copano Field Services/Karnes, L.P. | | Texas |
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| Copano Field Services/Upper Gulf Coast, L.P. | | Texas |
| |
| Copano Field Services/Live Oak, L.P. | | Texas |
| |
| Copano Pipelines/South Texas, L.P. | | Texas |
| |
| Copano Pipelines/Upper Gulf Coast, L.P. | | Texas |
| |
| Copano Pipelines/Hebbronville, L.P. | | Texas |
| |
| Copano Pipelines/TGC, L.P. | | Texas |
| |
| Copano Energy Services/Upper Gulf Coast, L.P. | | Texas |
| |
| Copano Energy Services/Texas Gulf Coast, L.P. | | Texas |
| |
| Copano Field Services/North Texas, L.L.C. | | Delaware |
| |
| Alamo Creek Properties, L.L.C. | | Delaware |
| |
| River View Pipelines, L.L.C. | | Delaware |
| |
| CMW Energy Services, L.L.C. | | Delaware |
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| Greenwood Gathering, L.L.C. | | Delaware |
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| Copano Pipelines/North Texas, L.L.C. | | Delaware |
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| Copano Pipelines/Texas Gulf Coast, L.L.C. | | Delaware |
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| Copano Pipelines/Victoria, L.L.C. | | Delaware |
| |
| Copano Processing/Louisiana, LLC | | Oklahoma |
