The well was drilled to a total depth (TD) of approximately 2,850m true vertical depth sub-sea (TVDSS) and encountered 23m-27m of net gas pay in a high quality Lower Pliocene sandstone unit at 1,850m TVDSS.
Log evaluation indicates that the formation has porosity of up to 30% and permeability of around 50 millidarcies.
A drill stem test was conducted across a 10m interval of gas-bearing reservoir which flowed at a surface equipment constrained rate of approximately 24 million standard cubic feet per day.
Initial analysis suggests that the gas is dry without any indication of CO2 or H2S.
In the deeper section, the well encountered a gross 256m section of inter-bedded sandstones and shales of Upper Miocene age.
Following petrophysical evaluation of a full suite of wire-line logs, this interval is interpreted to contain a net 120m of oil-bearing sandstones.
A sampling and pressure testing program recovered samples of light oil and gas, though the sandstones were proved to be tight, having low permeability, and are not considered net pay at this location.
The well reached TD in a sequence of Upper Miocene carbonates with strong gas shows.
Salamander has acquired more than 650sqkm of 3D seismic in the Bontang PSC over the Angklung structure and surrounding prospects.
The Angklung trend extends into the neighbouring SE Sangatta block (Salamander 75%, operator) where a 475sqkm 3D seismic survey is currently being acquired.
The well has been plugged and abandoned as a discovery, and the company will now conduct further technical work to evaluate both the resource potential of the Angklung discovery and the large inventory of prospects within Salamander’s acreage that exhibit similar seismic attributes to the pay section seen in Angklung-1 well.
Work will also be undertaken to further understand the Upper Miocene oil play fairway in the area, highlighted by the Angklung-1 well.
Salamander is an Asia focussed upstream oil and gas exploration and production company.
