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Apparatus and method for downhole well equipment and process management, identification, and actuation
| Details |
Inventors: Thomeer, Hubertus V.; Adnan, Sarmad; Sheffield, Randolph J.; Kenison, Michael H.; Forbes, Kevin J.;
Assignee: Schlumberger Technology Corporation (Sugar Land, TX)
Primary Examiner: Wong; Albert K.
Assistant Examiner:
Attorney, Agent or Firm: Curington; Tim, Nava; Robin, Kanek; Wayne
A method for actuating or installing downhole equipment in a wellbore employs non-acoustic signals (e.g., radio frequency signals) to locate, inventory, install, or actuate one downhole structure in relation to another downhole structure. The method comprises the steps of: (a) providing a first downhole structure that comprises a non-acoustic (e.g., radio frequency) identification transmitter unit that stores an identification code and transmits a signal corresponding to the identification code; (b) providing a second downhole structure that comprises a non-acoustic receiver unit that can receive the signal transmitted by the non-acoustic identification transmitter unit, decode the signal to determine the identification code corresponding thereto, and compare the identification code to a preset target identification code; wherein one of the first downhole structure and the second downhole structure is secured at a given location in a subterranean wellbore, and the other is moveable in the wellbore; (c) placing the second downhole structure in close enough proximity to the first downhole structure so that the non-acoustic receiver unit can receive the signal transmitted by the non-acoustic identification transmitter unit; (d) comparing the identification code determined by the non-acoustic receiver unit to the target identification code; and (e) if the determined identification code matches the target identification code, actuating or installing one of the first downhole structure or second downhole structure in physical proximity to the other. |
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DETAILED DESCRIPTION The present invention relates to a method for actuating, installing, or inventorying downhole equipment in a wellbore.
This method comprises providing a first downhole structure that comprises a non-acoustic identification transmitter unit that stores an identification code and transmits a non-acoustic signal (e.
g.
, a frequency signal, such as a radio frequency signal) corresponding to the identification code.
Also provided is a second downhole structure that comprises a non-acoustic receiver unit that can receive the non-acoustic signal transmitted by the non-acoustic identification transmitter unit, decode the non-acoustic signal to determine the identification code corresponding thereto, and compare the identification code to a target identification code.
One of the first downhole structure and the second downhole structure is secured at a given location in a subterranean wellbore, and the other is moveable in the wellbore.
The second downhole structure is placed in close enough proximity to the first downhole structure so that the receiver unit can receive the signal transmitted by the identification transmitter unit.
It then compares the identification code determined by the receiver unit to the target identification code.
If the determined identification code matches the target identification code, then one of the first downhole structure or second downhole structure is actuated, managed, classified, identified, controlled, maintained, actuated, activated, deactivated, located, communicated, reset, or installed.
For example, the second downhole structure can be installed inside the first downhole structure.
The present invention also relates to apparatus that can be used in the above-described method.
Such apparatus is described in more detail below.
Another aspect of the invention is a method of inventorying downhole equipment, and storing and retrieving identification codes for the inventoried equipment, as well as an inventory of services performed on the well
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