Jubilant announced that the Kathalchari-NE (KL-NE) well was spudded on February 21, 2012 in the Tripura block. This is the second well drilled to appraise the Kathachari-1 (K-1) discovery. The well is located 2.5 miles (4 kilometers) north-northeast and up-dip from K-1 and 1.6 miles (2.6 kilometers) northwest and down dip of the first appraisal well Srikantabari-1.
The KL-NE will be a vertical well drilled to a total depth of 9,809.7 feet (2,990 meters) Measured Depth ("MD").
This well will test the Middle Bhuban equivalent sands encountered in the K-1 well, one zone of which had flowed at a rate of 5.2 MMscfd. These equivalent sands are expected to be encountered approximately 1,969 feet (600 meters) up-dip of the K-1 sands. The well is the fifth well to be drilled on the block.
As previously announced, the first appraisal well, Srikantabari-1 (S-1) was drilled to a depth of 9754 feet (2,973 meters) Measured Depth ("MD") compared to planned target depth of 10,902 feet (3,323 meters) MD. At 9,751 feet (2,972 meters) MD, a gas kick was witnessed while drilling and recorded a maximum gas of 48.9 percent. Due to well control issues the drilling was terminated at 9754 feet (2,973 meters) MD and Jubilant plans to test the sands encountered while drilling. A gas kick was also observed at 9,124 feet (2,781 meters) MD.
Based on the interpretation of the sub-surface data such as Mud logs, Dipole Shear Sonic Imager (DSI) log, Logging While Drilling (LWD) logs and Wireline logs, five zones of interest, totaling to approximately 303 feet (93 meters) gross thickness, have been identified for testing within the Middle Bhuban formation. Jubilant is now planning to test these five zones in a sequential manner with a workover rig along with Kathalchari-NE (KL-NE) testing.
Jubilant holds a 20 percent participating interest in this block through its subsidiary Jubilant Oil & Gas Private Limited, India which is also the Operator for the block. GAIL India Limited holds the balance 80 percent participating interest.
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