The oil and gas industry has attempted for many years to find new ways to analyze and determine the
type of rocks drilled on a real time basis. Mud analysis logging is a direct method of detecting oil and gas in
formations drilled, it depends on the "feel" of the bit to decide formation type, as well as, geochemical analysis
which was introduced 30 years ago, starting with a pulsed-neutron generator (PNG) based wireline tool upon
which LWD technology was based.
In this paper, we are studying the feasibility of introducing a new technology for real-time geochemical analysis.
Laser-induced breakdown spectroscopy (LIBS) is a type of atomic emission spectroscopy, It is a cutting-edge
technology that is used for many applications such as determination of alloy composition, origin of manufacture
(by monitoring trace components), and molecular analysis (unknown identification). LIBS can analyze any material
regardless of its state (solid, liquid or gas), based upon that fact, we can analyze rocks, formation fluids' types and
contacts between them.
In cooperation with the National Institute of Laser Enhanced Science, Cairo University in Egypt, we've done tests on
sandstone, limestone and coal samples acquired from different places using Nd: YAG Laser with in addition to other
components that are explained in details through this paper to understand the ability of Laser to analyze rock
samples and provide their elemental composition using LIBS technique.
We've got promising results from the sample analysis via LIBS and discussed the possibility of deploying this
technology in oilfields suggesting many applications and giving a base for achieving a quantitative elemental
analysis method in view of its shortcomings and solutions.