ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,980, issued on July 29, was assigned to GHW Solutions LLC (Fort Worth, Texas).

"Gravity assisted reservoir drainage systems and methods" was invented by Jonathon Weiss (Fort Worth, Texas) and Stephen Andrew Graham (Fort Worth, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Gravity assisted reservoir drainage systems and methods, which improve preexisting reservoir drainage systems and artificial lift methods using the interwell hydraulic communication that exists between closely spaced horizontal wells in certain fully developed leases completed with large multi-stage hydraulic fracture treatments in batch fashion."

The patent was filed on Ap...