US 11,873,705 B1
Multi-stage fracturing techniques in oil and gas
Mohammed Sameer Almajed, Alhasa (SA); Ahmed M. Alghuryafi, Udhailiyah (SA); Zuhair Mohammed Alhassan, Dhahran (SA); and Nasser Mohammed Alhassan, Alhasa (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Oct. 20, 2022, as Appl. No. 17/969,968.
Int. Cl. E21B 33/13 (2006.01); E21B 43/26 (2006.01); E21B 33/134 (2006.01); E21B 33/16 (2006.01)
CPC E21B 43/261 (2013.01) [E21B 33/134 (2013.01); E21B 33/165 (2020.05)] 15 Claims
OG exemplary drawing
 
1. A method of fracturing a rock formation, the method comprising:
deploying a production pipe to a wellbore within the rock formation for flowing formation fluid through the production pipe to a surface of the rock formation, wherein a seat is attached to an inner surface of the production pipe;
cementing the production pipe to the wellbore with cement to isolate a first section of the wellbore from a second section of the wellbore along an outer surface of the production pipe, wherein the second section is located above the first section;
deploying a perforation tool to the production pipe along the first section of the wellbore;
activating the perforation tool to form access ports along the first section of the wellbore that fluidly connect the production pipe to the wellbore;
delivering treatment fluid from the production pipe to the wellbore through the access ports;
flowing formation fluid from the rock formation into the production pipe through the access ports; and
closing an opening in the seat to isolate the first section of the wellbore from the second section of the wellbore.