SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Act of 1934 Date of Report (Date of earliest event reported): January 29, 1999 GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-B GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-C GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F --------------------------------------------------------------- (Exact name of Registrant as specified in its Articles) I-B: 0-14657 I-B: 73-1231998 I-C: 0-14658 I-C: 73-1252536 I-D: 0-15831 I-D: 73-1265223 I-E: 0-15832 I-E: 73-1270116 Oklahoma I-F: 0-15833 I-F: 73-1292669 - ---------------- --------------- ------------------- (State or other (Commission (I.R.S.Employer jurisdiction of File No.) Identification) incorporation or organization) Two West Second Street, Tulsa, Oklahoma 74103 ---------------------------------------------------------------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (918) 583-1791 ITEM 5: OTHER EVENTS Year-End Values. The General Partner is required to provide year-end values of the Geodyne Energy Income Limited Partnership I-B, Geodyne Energy Income Limited Partnership I-C, Geodyne Energy Income Limited Partnership I-D, Geodyne Energy Income Limited Partnership I-E, and Geodyne Energy Income Limited Partnership I-F (collectively, the "Partnerships") underlying properties to its limited partners pursuant to the Partnerships' partnership agreements. Attached is a form of the letter to be sent to the limited partners on or about January 29, 1999, and a chart showing, on a per-unit basis, the 1998 Year-End Estimated Valuations for the Partnerships. ITEM 7: EXHIBITS 20.1 Form of letter to be sent to the limited partners of the Partnerships on or about January 29, 1999. 99.1 Chart showing on a per-unit basis the 1998 Year-End Estimated Valuations for the Partnerships. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-B GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-C GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F By: GEODYNE RESOURCES, INC. General Partner DATE: January 29, 1999 // Dennis R. Neill// --------------------------------------------- Dennis R. Neill President