Greymouth gets sidetracked at Moturoa

NEW Zealand private company Greymouth Petroleum has almost finished the second stage of its long-term field development program for the historic Moturoa oilfield at Port Taranaki, New Plymouth.
Greymouth gets sidetracked at Moturoa Greymouth gets sidetracked at Moturoa Greymouth gets sidetracked at Moturoa Greymouth gets sidetracked at Moturoa Greymouth gets sidetracked at Moturoa

The Auckland-based company has completed drilling the third well at the port, Moturoa-7, and nearly finished the first sidetrack of that well.

Greymouth also plans applying for a petroleum mining permit for the field with the Government’s Crown Minerals unit in the next month or two, chief operating officer John Sturgess told today.

“We are still working on the same shallow sands, and once the rig is gone we will re-instate early production test facilities,” he said.

Greymouth is again using Bonus Drilling Rig 2 to drill into the shallow zones that last May flowed at rates in excess of 200 barrels of oil per day.

At that time Sturgess said this was Greymouth’s first shallow onshore oil pay and that crude from the Moturoa-5 and 6 wells initially flowed naturally from multiple zones, though the waxy crude would probably need pumping to get reliable reserves estimates.

He added then that the flows confirmed the discovery of some significant extensions to New Zealand's historic first commercial oil and gas field.

Operator Greymouth (98% interest) and the Ngati Te Whiti Hapu Society (which holds a 2% carried interest) drilled the Moturoa-5 and 6 wells in exploration licence PEP 38464 in late 2006-early 2007.

Moturoa-5 was drilled as a deviated well to a measured depth of 2571m and encountered hydrocarbons in a number of sections. Moturoa-6 was drilled to a measured depth of 1250m and then sidetracked horizontally twice to test the lateral extent of one of the oil reservoirs discovered.

Today Sturgess said these multiple sidetracks were deliberate as there was limited seismic data

“We are using early sidetracks as pilots to tie down structures or faults,” he said.

All the relevant test results from the wells would form part of Greymouth’s field development plan it would soon submit to Crown Minerals. The company’s exploration licence expires next November.