Homerun-1 successfully flow tested gas from Zone 2 and the joint venture decided to fracture stimulate the producing zone in order to enhance the production rate.
But between the fracture stimulation and the recovery of the frac fluid, the well bore became obstructed, possibly due to failure of the well casing, and exhaustive attempts to clear the obstruction failed, according to Golden Gate.
Zone 3 was subsequently perforated and tested. Swabbing of Zone 3 did not instigate a sustained flow of gas but 14 barrels of light oil were recovered from the swab pipe, indicating the presence of oil in the reservoir, the company said.
A mini frac of the zone did not result in any sustained flow and given the damage to the well bore the Joint Venture has elected to plug and abandon the well.
“The discovery of oil and gas and the successful initial unstimulated flow tests at both LaPlaya Deep-1 and Homerun-1 have confirmed the prospectivity of the deep section beneath Padre Island,” Golden Gate said.
“The technical challenge is to now successfully implement a fracture stimulation program in these deep hydrocarbon bearing zones. Other operators in the region have successfully implemented fracture stimulation programs in similar reservoirs.”
Golden Gate has a large acreage position across Padre Island with several large prospects ready to drill ranging in potential from 90 bcf to 1 tcf. Many of these prospects are located on a part of the island where the joint venture’s depositional models indicate thicker and better quality reservoirs, the company said.
The Padre Island drilling program is currently being delayed by the takeover of the JV operator (Novus Petroleum Ltd) by Medco Energi and the subsequent decision to sell Novus’ US assets. Golden Gate understands that the trade sale of Novus’ US assets is nearing completion and consequently active exploration should soon recommence.
“Some of the best prospects at Padre Island remain to be drilled and it is anticipated that drilling on these prospects will commence later this year,” the company said.
