US 11,753,911 B1
Controlling fluid pressure at a well head based on an operation schedule
Todd R. Kabrich, Tomball, TX (US); Andy Publes, Katy, TX (US); Casey A. Otten, Spring, TX (US); Brandon J. Mabe, Houston, TX (US); Perry D. Converse, Lafayette, IN (US); and Jason T. Herlehy, The Woodlands, TX (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Mar. 11, 2022, as Appl. No. 17/692,905.
Int. Cl. E21B 34/02 (2006.01); E21B 43/26 (2006.01); E21B 43/12 (2006.01); E21B 47/00 (2012.01)
CPC E21B 43/12 (2013.01) [E21B 34/02 (2013.01); E21B 43/2607 (2020.05); E21B 47/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hydraulic fracturing system, comprising:
one or more fracturing rigs;
one or more blending equipment fluidly connected to inlets of the one or more fracturing rigs;
one or more power sources electrically connected to a first subset of the one or more fracturing rigs, or one or more fuel sources fluidly connected to a second subset of the one or more fracturing rigs;
one or more missile valves fluidly connected to outlets of the one or more fracturing rigs;
one or more zipper valves fluidly connected to outlets of the one or more missile valves;
one or more well head valves fluidly connected to outlets of the one or more zipper valves;
one or more well heads fluidly connected to outlets of the one or more well head valves; and
a controller, wherein the controller is configured to:
monitor, for a well head of the one or more well heads, an operation or a state of one or more subsystems of the hydraulic fracturing system, and
control, based on an operation schedule for the hydraulic fracturing system and based on monitoring the operation or the state, the state or equipment changes.