[12] Patent
[11] Patent No.:GC0009434  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/141997
Date of the Decision to Grant the Patent:20/Dec/2018

[21] Application No.:GC 2014-27508

[22] Filing Date:8/7/2014

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventor: TANG, Yumei

[73] Owner: HALLIBURTON ENERGY SERVICES, INC., 10200 Bellaire Boulevard, Texas 77072, Houston, USA

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C




E21B 47/00, 47/09, 47/13

[56] Cited Documents:

-YUMEI TANG ET AL: An efficient multi-boundaries determination method for geosteering complex reservoirs. 1-20 SEG TECHNICAL PROGRAM EXPANDED ABSTRACTS (2012-09-01). pages 1-5. XP055175438.
-Pedro Anguiano-Rojas ET AL: SPE 168079 1-20 Field Evaluation of LWD Resistivity Logs in Highly Deviated and Horizontal Wells in Saudi Arabia (2013-05-19). XP055175448.
-Burkay Donderici ET AL: INVERSION 1-20 PROCESSING FOR DUAL BOUNDARIES: COMPARATIVE CASE HISTORIES.SPWLA 53 rd Annual Logging Symposium. (2012-06-16). XP055175478.
Examiner: Eng. Mohammed A. AlShamrani

[57] Abstract: Systems, methods, and software for detecting boundary locations of multiple subsurface layers are described. In some aspects, the boundaries of multiple subsurface layers in a subterranean region are identified based on measurements associated with multiple different transmitter-receiver spacings. The measurements are generated based on operating multiple transmitters and multiple receivers of a resistivity logging tool at a tool depth in a wellbore in the subterranean region. A first pair of the subsurface boundary locations are determined based on a first measurement associated with a first transmitter-receiver spacing. A second, different pair of the subsurface boundary locations are determined based on a second measurement associated with a second, longer transmitter-receiver spacing. The first pair of subsurface boundary locations reside between the second pair of subsurface boundary locations in the subterranean region.
No. of claims: 16     No. of figures: 10


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