Emerald Operational Update: December 2021 to May 2022

Emerald negotiated an option to operate and test its patented gas-water separation Tool in adjacent, idle wells from now-bankrupt operators.

The idle wells tested required a fair amount of remediation to the down-hole portion of the well as part of this process. After cleaning the wellbore and installing Emerald’s tool string, the team found that formation waters in the productive Wall Coal zone had recharged during six years of shut-in. The well had produced over 680,427 MCF of gas and 1,136,607 barrels of water before being shut-in. In the last month of its operation, the well produced water at the rate of 3.28 gallons per minute.

After cleaning out the wellbore, but before running the Tool and attempting to produce this well, Emerald observed a water influx into the wellbore at a much higher rate of 40 gallons per minute. Several months of testing this well resulted in 0 MCF of production. We have seen similar water recharge rates in Emerald’s own Wall Coal wells.

This experience allowed us to adjust the design of our downhole gas-water separation tool string. Currently, we isolate the formation from any hydrostatic head that may be present above the productive coal formation.

We have since installed the modified gas-water separation tool string in most of our wells and have gotten modest, but positive, gas rate increases as a result.