The demand for accessible fossil fuels has made unconventional reservoirs more and more important as alternative energy resources. Unlike conventional reservoirs that have been characterized through numerous methodologies, unconventional formations have not yet undergone advanced characterization, and much remains to be done. Laser technology has the advantages of non-contact, high sensitivity and immunity from electromagnetic interference, showing important scientific research and application value in the oil-gas field, and is expected to provide a new technology and index for the characterization and evaluation of oil-gas resources. The laser-induced voltage (LIV) technique studies the physical properties of materials by means of photovoltage, photocurrent and photoconductivity of materials irradiated by laser source, which is expected to be an effective supplement to the existing research methods of unconventional oil-gas reservoirs. In this paper, we present a brief review of recent studies aimed at the application of LIV measurement in unconventional reservoirs, including the anisotropic characterization of shales, organic yield evaluation and pyrolysis processed of oil shales.
Optical properties of the group components in crude oil were studied using terahertz time-domain spectroscopy (THz-TDS) under nitrogen environment at ambient temperature. The group composition of crude oil from different oil fields were analyzed on the basis of terahertz spectra. Both time delay and amplitude of terahertz wave were modulated in accordance with group composition. The features of terahertz spectra which contain information from different parts of the crude oil group composition can be qualitatively analyzed to detect the group components of the crude oil.
Terahertz spectroscopy was used to study the sintering process of traditional ceramic by scanning sample with different final temperatures (from 100-1450°C). Absorption coefficient (α) and refractive index (n) were obtained with different final temperatures. The sintering process was divided into four stages on the basis of α and n, which characterized the ceramic sintering process well. The results coincide with the actual situation. Therefore, THz-TDS represents a promising technique to monitor the synthesis process of materials.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.