发明名称 |
Methods for geosteering a drill bit in real time using drilling acoustic signals |
摘要 |
Disclosed is an apparatus, method, and program product for steering a drill bit within a pay zone in a lateral well. The method includes receiving acoustic signature data from a downhole processor assembly. The acoustic signature data includes an amplitude spectrum and one or more acoustic characteristics evaluated from an acoustic signal provided by a sensor arranged adjacent to a drill bit and generated in real-time as a result of rotational contact of the drill bit with encountered rock in the lateral well during drilling. The method further includes comparing the received real-time acoustic signature data to predetermined acoustic signatures determined for a plurality of rock samples, and identifying a lithology type of the rock being encountered by the drill bit based on the comparison. Further, the method includes steering the drill bit in a predefined direction, in real-time, based on the identified lithology type of the rock, for maintaining the drill bit within the pay zone of the lateral well. |
申请公布号 |
US9103192(B2) |
申请公布日期 |
2015.08.11 |
申请号 |
US201213678202 |
申请日期 |
2012.11.15 |
申请人 |
SAUDI ARABIAN OIL COMPANY |
发明人 |
Yang Yunlai |
分类号 |
E21B47/026;E21B44/00;E21B7/06;E21B44/02;G01V1/50;E21B47/09;E21B7/04 |
主分类号 |
E21B47/026 |
代理机构 |
Bracewell & Giuliani LLP |
代理人 |
Bracewell & Giuliani LLP ;Rhebergen Constance Gall;Chin Brad Y. |
主权项 |
1. A method for steering a drill bit within a pay zone in a lateral well, the method comprising:
receiving acoustic signature data from a downhole processor assembly, wherein the acoustic signature data comprises an amplitude spectrum and one or more acoustic characteristics evaluated from an acoustic signal provided by a sensor arranged adjacent to a drill bit and generated in real-time as a result of rotational contact of the drill bit with encountered rock in the lateral well during drilling; comparing the received real-time acoustic signature data to predetermined acoustic signatures determined for a plurality of rock samples; identifying a lithology type of the rock being encountered by the drill bit based on the comparison; and steering the drill bit in a predefined direction, in real-time, based on the identified lithology type of the rock, for maintaining the drill bit within the pay zone of the lateral well. |
地址 |
SA |