Apparatus and methods for cemented multi-zone completions
AssigneeWeatherford Technology Holdings, LLC
InventorsJeffrey John Lembcke, Charles D. Parker, Jason Scott Kiddy, Iain Greenan
Life of this patent
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Abstract
A method and apparatus for determining a parameter of a production fluid in a wellbore by providing an initially blocked isolated communication path between a sensor and an aperture formed in a sleeve. The isolated communication path is subsequently unblocked to allow measurements of the parameter of the production fluid.
Claims27
A method for determining a parameter of a production fluid in a wellbore, comprising:
- attaching a plurality of sensors to a string of tubing equipped with a plurality of sleeves;
- providing an isolated communication path for fluid communication between at least one of the plurality of sensors and at least one of a plurality of apertures formed in the sleeves, the apertures initially closed and the isolated communication path initially blocked, wherein the isolated communication path is initially blocked by a removable seal positioned between a bore of the string of tubing and the plurality of sensors to initially block fluid communication therebetween;
- inserting the string of tubing into the wellbore;
- cementing the string of tubing in the wellbore;
- remotely opening the apertures in the sleeves;
- injecting a fracking fluid into a formation adjacent the wellbore via the apertures, thereby perforating the cement;
- unblocking the isolated communication path;
- and
- measuring the parameter of the production fluid adjacent the apertures.
A tool string for determining a parameter of a production fluid in a wellbore, comprising:
- a tubing equipped with a sleeve, wherein at least one aperture is formed in the sleeve;
- a sensor on a sensing cable, wherein the sensor is spaced from the at least one aperture;
- a sensor container, wherein the sensor is at least partially enclosed in the sensor container;
- and
- an isolated communication path that spans a predetermined distance from the sensor container to the nearest at least one aperture, wherein the isolated communication path includes a removable seal positioned between a bore of the tubing and the sensor to initially block fluid communication therebetween.
A container for determining a parameter of a production fluid in a wellbore, comprising:
- a container cover and a container base;
- a port on the container;
- at least one fluid channel creating fluid communication between the port and a compartment in the container, the at least one fluid channel formed in the container cover;
- an isolated communication path coupled to the port, wherein the isolated communication path is blocked;
- a sensor at least partially enclosed by the container cover and the container base, wherein the sensor is isolated from external fluids;
- and
- a groove formed in the container cover or the container base to accommodate a sensor cable therethrough for connection to the sensor.
Dependencies are inferred from the claim text.