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US-12535613-B2 · Jan 27, 2026 · US
Apparatus and methods for measuring formation characteristics
US8969792B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8969792-B2 |
| Application number | US-201314103878-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 12, 2013 |
| Priority date | Jul 16, 2009 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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An apparatus can measure characteristics of a formation surrounding a borehole. The apparatus includes a tool body having a neutron measurement section and a density measurement section. The neutron measurement section includes a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source. The density measurement section includes a gamma ray source and a gamma ray detector arrangement spaced in an axial direction from the gamma ray source. The neutron measurement section and the density measurement section are positioned in the tool body so that the sections overlap in the axial direction and are azimuthally spaced apart in the tool body. The tool body also includes shielding to block a direct signal path from the neutron source to the gamma ray detector arrangement and to block a direct signal path from the gamma ray source to the neutron detector arrangement.
First claim
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The invention claimed is: 1. An apparatus for measuring characteristics of a formation surrounding a borehole comprising a tool body including: a neutron measurement section including a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source; a density measurement section including a gamma ray source and a gamma ray detector arrangement spaced in an axial direction from the gamma ray source, wherein the neutron measurement section…
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- What does patent US8969792B2 cover?
- An apparatus can measure characteristics of a formation surrounding a borehole. The apparatus includes a tool body having a neutron measurement section and a density measurement section. The neutron measurement section includes a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source. The density measurement section includes a gamma ray source and…
- Who is the assignee on this patent?
- Schlumberger Technology Corp
- What technology area does this patent fall under?
- Primary CPC classification G01V5/145. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).