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US 10,648,324 B2Granted
Auxiliary system for use in drilling
OwnerWeishan Haninventor
Life of this patent
Estimating the term…
Abstract
The present invention provides a drilling auxiliary system, which establishes one or more links among multiple wells or among different branches of the same well. When the present invention is applied to the EM data transmission, it can significantly reduce unwanted electric energy consumption in the formation, thus effectively improve data transmission efficiency. When the present invention is applied to the casing detection, it can achieve a large detection range and greatly simplify the complexity of the operation, thereby saving costs.
Claims11
A logging while drilling auxiliary system comprising:
- connection wires establishing circuit connection among multiple wells via at least two connection points, wherein the multiple wells comprise a currently drilling well and at least one existing well, one of the at least two connection points is at the terminal of a drilling pipe or casing for the currently drilling well, and one of the at least two connection points is at the terminal of casing for the at least one existing well;
- a transmitting device electrically connected to the drilling pipe, or the casing of the currently drilling well, or the casing of the at least one existing well, or the connection wires, and configured to supply electric current to the drilling pipe, the casing of the currently drilling well, and the casing of the at least one existing well, wherein the connection wires form a current loop in combination with the transmitting device, the drilling pipe, the casing of the currently drilling well, the casing of the at least one existing well, and formation between the currently drilling well and at least one existing well;
- and
- a receiver connected to the current loop and receiving data by detecting an electric signal of the current loop, wherein the electric signal is selected from the group consisting of current, voltage, EM field, and combinations thereof.
1 more element
Dependencies are inferred from the claim text.