| Date Filed | Type | Description |
| 05/20/2011 |
15-12G
| Form 15-12G - Securities registration termination [Section 12(g)] |
| 05/13/2011 |
10-Q
| Quarterly Report for the period ended March 31, 2011 |
| 03/31/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 11/12/2010 |
10-Q
| Quarterly Report for the period ended September 30, 2010 |
| 08/13/2010 |
10-Q
| Quarterly Report for the period ended June 30, 2010 |
| 06/25/2010 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 06/25/2010 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 05/14/2010 |
10-Q
| Quarterly Report for the period ended March 31, 2010 |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 11/16/2009 |
10-Q
| Quarterly Report for the period ended September 30, 2009 |
| 08/14/2009 |
10-Q
| Quarterly Report for the period ended June 30, 2009 |
| 06/25/2009 |
SC 13D/A
| CLAYTON WILLIAMS ENERGY INC has filed a Schedule 13D for Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 06/25/2009 |
SC 13D/A
| Form SC 13D/A -- General statement of acquisition of beneficial ownership [amend] |
| 05/15/2009 |
10-Q
| Quarterly Report for the period ended March 31, 2009 |
| 03/27/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 11/14/2008 |
10-Q
| Quarterly Report for the period ended September 30, 2008 |
| 08/14/2008 |
10-Q
| Quarterly Report for the period ended June 30, 2008 |
| 06/27/2008 |
SC 13D/A
| Form SC 13D/A -- General statement of acquisition of beneficial ownership [amend] |
| 06/27/2008 |
SC 13D/A
| SOUTHWEST ROYALTIES INC has filed a Schedule 13D for Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 05/14/2008 |
10-Q
| Quarterly Report for the period ended March 31, 2008 |
| 03/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 12/27/2007 |
SC 13D/A
| CLAYTON WILLIAMS ENERGY INC has filed a Schedule 13D for Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 12/27/2007 |
SC 13D/A
| SOUTHWEST ROYALTIES INC has filed a Schedule 13D for Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 11/13/2007 |
10-Q
| Quarterly Report for the period ended September 30, 2007 |
| 08/13/2007 |
10-Q
| Quarterly Report for the period ended June 30, 2007 |
| 07/11/2007 |
SC 13D/A
| CLAYTON WILLIAMS ENERGY INC has filed a Schedule 13D for Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 07/11/2007 |
SC 13D/A
| SOUTHWEST ROYALTIES INC has filed a Schedule 13D for Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 05/14/2007 |
10-Q
| Quarterly Report for the period ended March 31, 2007 |
| 04/12/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 11/13/2006 |
10-Q
| Quarterly Report for the period ended September 30, 2006 |
| 08/14/2006 |
10-Q
| Quarterly Report for the period ended June 30, 2006 |
| 07/10/2006 |
SC 13D/A
| SOUTHWEST ROYALTIES INC reports a 34.1% stake in Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 07/10/2006 |
SC 13D/A
| CLAYTON WILLIAMS ENERGY INC reports a 34.1% stake in Southwest Royalties Institutional Income Fund VIII-B, L.P. |
| 05/15/2006 |
10-Q
| Quarterly Report for the period ended March 31, 2006 |
|