Abstract
Thailand is lacked of gas that more information of probable (P2) and possible (P3) reserve data including shale gas can be acceptable to prove (P1) reserve data for new gas field. This research had implicated for understanding of unconventional reservoir rock by rock mechanical, micro-CT, and geochemistry analysis of the Huai Hin Lat Formation. The rock mechanical analysis is composed of average young’s modulus, Poisson’s ratio, and compressive strength of 1933.79 MPa, 0.1472, and 52.56 MPa. The average porosity of 6.89% consists of 5.41% and 1.48% of closed and open porosities. The average mineralogical results consist mainly of 57.60% and 42.40% of brittle and ductile minerals indicating more elasticity except Bed 6. The Bed 6 is significantly higher quartz (15%) and brittle minerals (64%) indicating to easier fracture are, therefore, lower compressive strength (25.93 MPa), young’s modulus (1729.10 MPa) and Poisson’s ratio (0.0705). The Beds 3B is slightly higher clay containing slightly higher closed porosity (5.46%) but the Bed 14 is slightly higher brittle mineral indicating to slightly higher open porosity.
Highlights
The Bed 6 is significantly higher quartz (15%) and brittle minerals (64%) indicating to easier fracture are, lower compressive strength (25.93 MPa), young’s modulus (1729.10 MPa) and Poisson’s ratio (0.0705)
The compressive strength, Poisson’s ratio, and young modulus are shown in Table 1 with compressive longitudinal splitting [3]
The Bed 6 is of significantly higher percentage of brittle mineral (64%) referring to easier fracture
Summary
Another gas field is the Dong Mun that was newly discovered. It is absolutely proved that a proved (P1) reserve data will belong to a probable (P2) and possible (P3) reserve data by more studying. Some researchers are interested in unconventional gas field especially shale gas. The Huai Hin Lat Formation is one among others that are tried to develop a new shale gas field. Source rock potential is successful by former researchers. More understanding rock mechanic properties are key control evaluation of unconventional reservoir rock
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