US 12,146,384 B2
Single trip wellbore cleaning and sealing system and method
Philippe Quero, Houston, TX (US); and Harley Jones, II, Duncan, OK (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 1, 2022, as Appl. No. 18/073,352.
Application 18/073,352 is a continuation in part of application No. 17/124,212, filed on Dec. 16, 2020, granted, now 11,542,777.
Prior Publication US 2023/0099838 A1, Mar. 30, 2023
Int. Cl. E21B 33/16 (2006.01); E21B 33/127 (2006.01); E21B 34/06 (2006.01)
CPC E21B 33/16 (2013.01) [E21B 33/1275 (2013.01); E21B 34/063 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A downhole tool, comprising:
a wash tool configured to generate pulses of a first fluid at a first frequency and a first pressure for washing a target interval of a wellbore; and
a plugging tool in fluid communication with the wash tool and configured for depositing a second fluid at the target interval of the wellbore to form a sealing plug, the plugging tool including an electric motor and an obturation mechanism driven by the electric motor to generate pulses of the second fluid at a second frequency and a second pressure by alternately interrupting and releasing the flow of the second fluid through a fluid passage, and wherein the obturation mechanism comprises a plunger reciprocable by the electric motor to alternately block and unblock the fluid passage.