The field is located 20 km north of Mehsana town in north Gujarat and has an area of 5.65 sq km. Two wells (Un #4 and Un #8) were drilled by ONGC in which U #4 proved to be an oil producer from olpad formation and Un #8 was found dry and abandoned. Subsequently, in the year 2001 field was awarded under Production Sharing Contract and since then GSPC acted as Operator representing Contractor partner with JV partner M/s. GNRL Oil and Gas Limited.
The field was taken over by the JV in 2003, revived the well Un #4 and kept under regular production through an artificial lift system. In July 2008, JV drilled one appraisal well Un #1A to probe the hydrocarbon potential Olpad pay.
Currently, GOGL is the sole party comprising the contractor under PSC pursuant to the assignment of PI held by GSPC to GOGL vide PSC amendment executed on August 2021. As on date, GOGL is the operator for the field with 100%.
Strategies are put in place to achieve optimum recoveries through the implementation of optimal reservoir technologies. Acquired advanced cased hole pulsar neutron and sonic scanner logs in the inventory of oil wells in the field during June 2022 with an objective to assess the hydrocarbon potential of the current producers and the upside potential like bypassed oil/low resistivity pays in the well which could not have been identified from old (Russian) conventional logs. Also targeted to acquire VP/VS data to support advanced pre-stack seismic inversion studies for field development planning.
Based on the ELAN inputs, potential hydrocarbon zones have been identified in Un #1A for testing within olpad formation (1440 – 1444m ;1446 – 1450m; 1420 to 1425m; 1330 to 1340m) and Kadi formation of interval (1157 to 1161m). In June 2022, tested intervals 1440 – 1444m; 1446 – 1450m within Olpad formation. Found hydrocarbon presence and further testing in progress.