Compact logging while drilling look around and look ahead tool
A compact sub assembly and well measurement system. The compact sub assembly may comprise a deep transmitter disposed about one end of the compact sub assembly, a shallow dual transmitter disposed on the compact sub assembly between the deep transmitter and a second end of the compact sub assembly, a shallow dual-collocated receiver disposed on the compact sub assembly between the deep transmitter and a second end of the compact sub assembly, and a deep receiver disposed about the second end of the compact sub assembly. A well measurement system for decoupling a component signal may comprise a logging tool. The logging tool may comprise a first sub assembly and a conveyance attached to the logging tool. In examples the first sub assembly is a compact sub assembly comprising a deep transmitter, a shallow dual transmitter, a shallow dual-collocated receiver, and a deep receiver.
1. A compact sub assembly comprising:
a single mandrel;
a deep receiver disposed on the single mandrel and about a first end of the single mandrel;
a deep transmitter disposed on the single mandrel and about a second end of the single mandrel, wherein the deep receiver and the deep transmitter transmit and measure a first full H-field tensor;
a shallow dual transmitter disposed on the single mandrel and between the deep transmitter and the first end of the single mandrel; and
a shallow dual-collocated receiver disposed on the single mandrel and between the deep transmitter and the first end of the single mandrel, wherein the shallow dual-collocated receiver and the shallow dual transmitter transmit and measure a second full H-field tensor that is decoupled from the first full H-field tensor.
2. The compact sub assembly of claim 1 , further comprising an information handling system, wherein the information handling system is disposed within the compact sub assembly.
3. The compact sub assembly of claim 2 , wherein the information handling system controls, the deep transmitter, the shallow dual transmitter, the shallow collocated receiver and the deep receiver.
4. The compact sub assembly of claim 1 , wherein the deep receiver further comprises a triaxial-collocated receiver.
5. The compact sub assembly of claim 1 , wherein the deep receiver further comprises a dual-collocated receiver and a clocking thread.
6. The compact sub assembly of claim 5 , wherein the clocking thread is disposed at the deep receiver at about an angle of 45 degrees in any direction.
7. The compact sub assembly of claim 1 , wherein the shallow dual-collocated receiver includes one or more collocated receivers.
8. The compact sub assembly of claim 7 , further comprising a shield slot cut in the shallow dual-collocated receiver, wherein the one or more collocated receivers are perpendicular to the shield slot cut.
9. The compact sub assembly of claim 1 , wherein the shallow dual transmitter includes one or more tilted transmitters.
10. The compact sub assembly of claim 1 , wherein the compact sub assembly is about 15 feet to about 40 feet in length.
11. A well measurement system for decoupling a component signal comprising:
a logging tool, wherein the logging tool includes: a first sub assembly, wherein the first sub assembly is a compact sub assembly and the compact sub assembly includes:
a single mandrel;
a deep receiver disposed on the single mandrel and about a first end of the single mandrel;
a deep transmitter disposed on the single mandrel and about a second end of the single mandrel wherein the deep receiver and the deep transmitter transmit and measure a first full H-field tensor;
a shallow dual transmitter disposed on the single mandrel and between the deep transmitter and the first end of the single mandrel;
a shallow dual-collocated receiver disposed on the single mandrel and between the deep transmitter and the first end of the single mandrel wherein the shallow dual-collocated receiver and the shallow dual transmitter transmit and measure a second full H-field tensor that is decoupled from the first full H-field tensor; and
a conveyance, wherein the conveyance is attached to the logging tool.
12. The well measurement system of claim 11 , wherein the logging tool comprises one or more sub-assemblies and each sub assembly is one or more compact sub-assemblies.
13. The well measurement system of claim 11 , further comprising an information handling system, wherein the information handling system is disposed within the compact sub assembly.
14. The well measurement system of claim 13 , wherein the information handling system controls, the deep transmitter, the shallow dual transmitter, the shallow dual-collocated receiver, and the deep receiver.
15. The well measurement system of claim 11 , wherein the deep receiver further comprises a triaxial-collocated receiver.
16. The well measurement system of claim 11 , wherein the deep receiver further comprises a dual-collocated receiver and a clocking thread.
17. The well measurement system of claim 16 , wherein the clocking thread is disposed at the deep receiver at about an angle of 45 degree in any direction.
18. The well measurement system of claim 11 , wherein the shallow dual-collocated receiver includes one or more collocated receivers.
19. The well measurement system of claim 18 , further comprising a shield slot cut in the shallow dual-collocated receiver, wherein the one or more collocated receivers are perpendicular to the shield slot cut.
20. The well measurement system of claim 11 , wherein the compact sub assembly is about 15 feet to about 40 feet in length.