Back to results
US 2023/0399902 A1Published application
Apparatus and method for early kick detection and loss of drilling mud in oilwell drilling operations
OwnerH. Udo Zeidlerinventor
Life of this patent
Estimating the term…
Abstract
The flow of well mud being pumped by a drilling rig pump into a wellbore is sensed by monitoring at least one signal from at least one sensor of drilling mud, determining a total well drilling pump mud output rate, and determining an apparent annular mud rate based on the at least one signal and the total pump drilling rate.
Claims3
A wellbore fluid monitoring method, the wellbore fluid being pumped by a drilling rig pump into a wellbore, the wellbore including a return wellbore having a central axis and an interior diameter for returning wellbore fluid to the drilling rig pump, the method comprising:
- a) providing a flow sensing apparatus comprising:
- (i) a central pipe having the same interior diameter as the interior diameter of the return wellbore,
- (ii) three flow chambers, each flow chamber including a bidirectional ultrasonic flow sensor for detecting the flow rate in the respective flow chamber, the bidirectional fluid sensors indicating the direction of fluid flow;
- b) monitoring the direction of fluid flow and the flow rate in each flow chamber.
1 more element
Dependencies are inferred from the claim text.