The course of dealings between the parties over a period of time can lead to modifications and waivers of provisions within an oil and gas lease and related contracts. A recent Dallas Court of Appeals case, Tollett v. MPI Surface, LLC, Case No. 05-17-00435-CV (Tex.Civ.App.- Dallas, no writ), illustrates that point.
In 2012, Cecelia Tollett entered into a groundwater sales agreement that allowed MPI Surface, LLC (“MPI”) to extract groundwater from Tollett’s land to sell to others for various uses in the oil and gas industry. Among other provisions, the agreement provided that Tollett was to be paid a 25% royalty of the gross sale proceeds with said royalties to be “… due on the same day of each month in which sale proceeds are collected by MPI.” Furthermore, the agreement provided that failing to timely and fully pay the royalties “shall be considered a material breach” allowing Tollett to terminate the agreement. Further, the agreement required MPI to establish and maintain a point of sale meter to record sales. Under the agreement, Tollett could install her own meters if MPI failed to install meters. The agreement also provided that “… MPI’s failure to timely and fully meter the water sales and disposal water shall be considered a material breach” of the agreement allowing Tollett to terminate.
MPI drilled four wells and began making royalty payments. However, MPI never installed any sort of point-of-sale metering system. Tollett did not complain and did not install her own meters. Over the course of the next four years, royalties were paid monthly but not on the same day on which payments were collected from the third-party buyers. MPI intended to pay the royalties on the 20th of each month, but generally was either a couple of days early or a couple of days late. The agreement contained a 60-day grace period. Over the first four years of the agreement, Tollett never complained about the monthly royalty payments and never complained about whether the payments actually fell on the 20th or a few days later.