Tool positioning technique
AssigneeSchlumberger Technology Corporation
InventorsMuhannad Abdelaziz Abuhaikal, Suraj Kiran Raman
Life of this patent
Estimating the term…
Abstract
Systems and techniques for establishing tool location in a well and conveyance line characteristics of a conveyance line accommodating the tool. The systems and techniques are directed at a closed loop manner of acquiring well location information. Thus, multiple pass detections of a well feature may be utilized to map, update and/or provide well location information in addition to conveyance line characteristic information in real-time. This may occur in absence of prior stored well mapping information or with supplemental information thereof.
Claims20
A system for establishing an estimated well depth at a location in a well with a locator tool of a well conveyance line, the system comprising:
- a toolstring of the line for detecting the location with the locator tool on multiple passes by the location;
- a control unit at a surface location adjacent the well for obtaining location information from the locator tool;
- and
- a fusion processor of the control unit to fuse the location information with other downhole information to establish the estimated well depth and well conveyance line condition information.
A method of estimating well depth at a location of a downhole conveyance line in the well, the method comprising:
- deploying the downhole conveyance line into the well with a locator tool to a location;
- detecting a well feature with the locator tool;
- determining a characteristic of the conveyance line with information from the detecting of the well feature;
- and
- estimating the well depth at the location with information from the detecting of the well feature and information from the determining of the conveyance line characteristic.
A well conveyance line coupled to surface equipment adjacent a well and comprising:
- a toolstring of the line for communication with a control unit of the surface equipment;
- a locator tool of the toolstring for detecting a signature location in the well;
- and
- a fusion processor of the control unit for obtaining the detecting of the signature location in a closed loop manner and in combination with one of additional information relative the well and the conveyance line.
Dependencies are inferred from the claim text.