Singapore-based upstream oil and gas producer KrisEnergy has completed drilling of the Tayum-1 exploration well in the Kutai production sharing contract (PSC) offshore Kalimantan, in the Makassar Strait, Indonesia.

KrisEnergy has drilled the well using Randolph Yost jack-up rig, which is owned by Shelf Drilling.

Located about 8km east-southeast of the Dambus-1 gas indication well, the Tayum-1 well was drilled to a total depth of 11,095ft measured depth (MD) or -8,410ft total vertical depth subsea (TVDSS).

As per preliminary estimates, the well encountered approximately 49 vertical feet of net gas pay from multiple sandstone intervals between 2,377ft MD and 7,180ft MD within the Miocene to Pliocene section.

Apart from two gas samples from the Miocene to Pliocene section, the company also recovered two gas samples from shaly-sand gas pay intervals between 6,647ft MD and 6,660ft MD, and 7,366ft MD to 7,402ft MD.

"KrisEnergy has drilled the well using Randolph Yost jack-up rig, which is owned by Shelf Drilling."

KrisEnergy said that the Tayum-1 well has been plugged and abandoned as a gas discovery and the company is currently evaluating the results together with the data from two previous gas discoveries, Dambus and Mangkok.

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The company has a 54.6% operated working interest in the Kutai PSC, while Salamander Energy and Orchid Kutai hold 23.4% and 22% interest, respectively.

KrisEnergy has recently signed agreements to acquire two additional assets in the Gulf of Thailand and in Bangladesh.

A strait between the islands of Borneo and Sulawesi in Indonesia, the Makassar Strait joins the Celebes Sea to the north, while meeting the Java Sea to the south.

Image: Map showing Kalimantan area in Indonesia. Photo: Courtesy of Stefan Ertmann.