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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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The Sunniland and Forty Mile Bend fields were the first two oil producing fields of south Florida. The Sunniland field was discovered in 1943, and the Forty Mile Bend field was discovered 10 years later. These two fields are oil productive from the Cretaceous Sunniland formation, and their pay zones are biostratigraphically and lithologically similar. A similar lithology is also found in the pay zone of the Bear Island field, discovered in 1972. The relatively great time span between field discoveries is indicative of the slow pace of exploration in south Florida at that time. In the early 1970s, increased drilling (from 2 to more than 15 wells/year) resulted in the discovery of eight more fields. Since exploration started 73 years ago, only a little over 200 wells, both ildcat and development, have been drilled in this basin. Although exploration methods initially relied on gravity and magnetics, subsequent geophysical methods have proved disappointing. Effective exploration in this area applies to petrology, sedimentology, and electric-log response. Because the biostratigraphy of the Sunniland formation pay zone is not the same in all fields, three fields having similar biostratigraphic pay zones were investigated.
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