YPFB Chaco to spud Junín-9D gas well in Bolivia

YPFB Chaco set 26 August 2026 as the date to begin drilling the Junín-9D (JNN-9D) development well, aimed at developing remaining gas reserves in the Sara and Piray reservoirs. The well is located in the Santa Rosa complex, Sara province, Santa Cruz department, and will also gather data on the gas potential of the Tariquía, Yecua and Ichoa formations.

The company began dismantling, transporting and reassembling drilling equipment for the well on 3 August 2026, following coordination meetings with contractors to optimize investment. Before mobilizing equipment, YPFB Chaco and specialized companies reviewed the drilling program through a Drilling Well on Paper (DWOP) technical workshop to validate well engineering, identify risks and coordinate critical activities.

Cumulative production is estimated at 9.1 billion cu ft of sales gas. If results are favorable, production is expected to start in November 2026 at an initial rate of 4.5 million standard cu ft per day.