EXHIBIT 10.21 SIXTH AMENDMENT TO AMENDED AND RESTATED AGREEMENT OF PARTNERSHIP GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-FAgreement of Partnership • March 29th, 2006 • Geodyne Energy Income LTD Partnership I-E • Crude petroleum & natural gas
This Sixth Amendment to Amended and Restated Agreement of Partnership of Geodyne Energy Income Production Partnership I-F (the "Partnership") is entered into by and between Geodyne Resources, Inc. ("Resources"), a Delaware corporation, as successor Managing Partner, and Geodyne Energy Income Limited Partnership I-F ("Geodyne I-F"), as General Partner.
EXHIBIT 4.23 Seventh Amendment to Amended and Restated Agreement and Certificate of Limited Partnership of Geodyne Energy Income Limited Partnership I-E This Seventh Amendment to Amended and Restated Agreement and Certificate of Limited Partnership of...Seventh Amendment to Amended and Restated Agreement and Certificate of Limited Partnership • March 29th, 2006 • Geodyne Energy Income LTD Partnership I-E • Crude petroleum & natural gas
