Thomas Teillet

• Doctor of Philosophy
• PostDoc Position at King Abdullah University of Science and Technology

Detection of pore types and diagenetic features from seismic data is a major challenge for the evaluation of carbonate reservoirs in the subsurface. Based on a detailed petrographical and petrophysical analysis of carbonate rock using optical and scanning electron microscopy, mercury-injection measurements, digital image analysis, and well logs, we...

The comments raised by Paumard et al. (2020) led us to identify some pitfalls and limitations regarding the use of seismic geomorphology and seismic stratigraphy for paleoenvironmental reconstructions of carbonate systems and to add some clarifications on the Teillet et al. (2020a) depositional model. The comparison of the paleoenvironmental predic...

The Miocene Yadana carbonate platform is a major offshore gas reservoir located in the Andaman Sea (offshore Myanmar). The integration of petrographic analysis of carbonate rocks, stable isotope measurements and seismic interpretation provided new insights into the diagenetic history of the Upper Burman Limestone reservoir. The high (28%) average p...

The geological origin of seismic reflections, within a carbonate gas reservoir, has been determined on the basis of an integrative analysis of cores, well-logs, pre-production and 4D time-lapse-seismic data. The gas reservoir is subdivided into meter to decameter-thick diagenetic units which are characterized by distinct acoustic properties. Low im...

In numerous Middle Eastern carbonate reservoirs, peloidal wackestone–packstone–grainstone facies deposited in shallow-marine environments are rock types with excellent pore storage potential in microporous and micritic/micritized grains. While the origin of microporosity has been extensively studied, the process of early marine micritization remain...

The Midyan Peninsula between the northern Red Sea and Gulf of Aqaba is the only place along the Red Sea where Lower to Middle Miocene syn-rift sedimentary strata (Aquitanian to Langhian) are continuously exposed, including exceptionally preserved carbonate platforms. We selected four focus areas onshore and one offshore in the Duba Basin to explore...

This study examines the morphodynamic evolution of the shoreline and coral reef coverage along the Arabian Sea coast of Oman over the past five decades (1972–2022). The Peninsula of Bar Al Hikman, the largest low-lying coastal area in Oman (550 km²; elevations < 10 m), hosts unique, monospecific coral reefs developing under a monsoon climate. Unlik...

Dramatic climatic and environmental changes over the last 12,000 years have significantly impacted Arabian coastal stratigraphy and human populations. The Bar Al Hikman peninsula (BAH), the largest low-lying area (1000 km2) along the Arabian Sea coast of Oman is a monsoon storm-dominated carbonate-evaporite system, where late Neolithic artifacts su...

In numerous carbonate reservoirs in the Middle East, peloidal packstone‐grainstones are rock types with excellent pore storage potential in micritised microporous grains. However, the origin of the micro‐porosity and associated micro‐spar remains unclear, and one hypothesis is that both micro‐spar and porosity originate from early marine micritisat...

Micritization is an early diagenetic process that gradually alters primary car-bonate sediment grains through cycles of dissolution and reprecipitation of microcrystalline calcite (micrite). Typically observed in modern shallow marine environments, micritic textures have been recognized as a vital component of storage and flow in hydrocarbon reserv...

When the modern features of large-scale Asian monsoonal circulation were set-up is poorly constrained and pre-Neogene monsoonal archives are rare. This study investigates the temporal evolution of neritic carbonates in the proto-South China Sea to reconstruct East Asian monsoonal currents and winds during the middle to late Paleogene. Analysis of t...

Pores smaller than 10 microns in diameter (microporosity) can make up more than 90% of the total porosity in giant Arabian carbonate reservoirs. While a lot of research has been done to understand the distribution of microporosity, the diagenetic processes initiating its development are still debated. Since microporosity occurs in highly diagenetic...

The Yadana carbonate buildup is a mature gas field, located in the Andaman Sea, offshore Myanmar and producing since 1998. The reservoir is an isolated carbonate platform, Oligocene to Miocene in age, sealed below 1200 m of siliciclastic sediments. Predicting hydrocarbon resources and water flows during the production has become a major challenge f...

The development history of an oligo-mesophotic, early Miocene, isolated carbonate system (>160 m in thickness), forming the uppermost part of the Oligo-Miocene Yadana buildup (northern Andaman Sea), has been evidenced from the integration of sedimentological core studies from 4 wells (cumulated core length: 343 m), well correlations, seismic interp...

The equivalent pore aspect ratio provides a tool to detect pore types by combining compressional and shear wave velocities, porosity, bulk density, and mineralogical composition of carbonate rocks. The integration of laboratory measurements, well logs, and petrographic analysis of carbonate rocks from various depositional and diagenetic settings (L...

Seismic reservoir characterization within the pre-salt carbonate context faces two challenges. One is that the data quality, resolution and amplitudes reliability might not be good enough to let classical approach working. Second is that although Ip-Porosity or Ip/Is- Ip laws are often used to interpret the seismic as a porosity or a geological fac...