also maintain insurance to partially protect against loss of production revenues from our producing assets. Operations by Geographic Area We currently have operations in Africa and South America. Presently, all operating revenues are generated from our operations offshore Ghana. We also have an equity method investment generating revenues with operations offshore Equatorial Guinea. Our Fields Information about our deepwater fields is summarized in the following table. Kosmos Participating Fields License Interest Operator Stage Ghana Jubilee(1) . . . . . . . . . . . . . . . WCTP/DT(2) 24.1%(2) Tullow Production TEN(1) . . . . . . . . . . . . . . . . DT 17.0%(4) Tullow Production Akasa . . . . . . . . . . . . . . . . . . WCTP 30.9%(5)(6) Kosmos(5) Appraisal Wawa . . . . . . . . . . . . . . . . . . DT 18.0%(6) Tullow Appraisal Mauritania Ahmeyim . . . . . . . . . . . . . . . Block C8(3) 28.0%(7) BP Appraisal Marsouin . . . . . . . . . . . . . . . Block C8 28.0%(7) BP Appraisal Senegal Guembeul . . . . . . . . . . . . . . Saint Louis Offshore Profond(3) 30.0%(8) BP(8) Appraisal Teranga . . . . . . . . . . . . . . . . Cayar Offshore Profond 30.0%(8) BP(8) Appraisal Yakaar . . . . . . . . . . . . . . . . . Cayar Offshore Profond 30.0%(8) BP(8) Appraisal Equatorial Guinea Ceiba Field and Okume Complex—Equity Method Investment(1) . . . . . . . . . . Block G 40.4%(9) KTEGI(9) Production (1) For information concerning our estimated proved reserves as of December 31, 2017, see ‘‘—Our Reserves.’’ (2) The Jubilee Field straddles the boundary between the West Cape Three Points (‘‘WCTP’’) petroleum contract and the Deepwater Tano (‘‘DT’’) petroleum contract offshore Ghana. To optimize resource recovery in this field, we entered into the Unitization and Unit Operating Agreement (the ‘‘UUOA’’) in July 2009 with the Ghana National Petroleum Corporation (‘‘GNPC’’) and the other block partners of each of these two blocks. The UUOA governs the interests in and development of the Jubilee Field and created the Jubilee Unit from portions of the WCTP petroleum contract and the DT petroleum contract areas. As a result of the approval of the GJFFDP by Ghana’s Ministry of Energy in October 2017, operatorship for the Mahogany and Teak discoveries transferred to Tullow which are now included in the Jubilee Field. These interest percentages are subject to redetermination of the participating interests in the Jubilee Field pursuant to the terms of the UUOA. Our paying interest on development activities in the Jubilee Field is 26.9%. (3) The Greater Tortue resource, which includes the Ahmeyim discovery in Mauritania Block C8 and the Guembeul discovery in the Senegal Saint Louis Offshore Profond Block, straddles the border between Mauritania and Senegal. 13