The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Jun. 02, 2009
Moustafa E. Oraby, Cairo, EG;
Moustafa E. Oraby, Cairo, EG;
Halliburton Energy Services, Inc. (“HESI”), Houston, TX (US);
Abstract
Formation density is calculated from acoustic logging measurements. This technique does not require a radioactive source and in fact it may offer better precision particularly in rugose boreholes. In at least some embodiments, the technique exploits an observed relationship between a transmission coefficient T(p, V, pV) and a breakdown resistance μB(p, V, V) to enable determination of the formation density pb from measurements of the formation's compressional wave velocity V, the formation's shear wave velocity Vs, and the borehole fluid's acoustic impedance pV. The desired measurements can be acquired by attaching or integrating a fluid cell with an acoustic logging tool that measures acoustic wave propagation velocities. Real-time density logs can be obtained from both wireline and logging-while-drilling implementations.