High gamma ray sandstone
WebOn the basis of GR log analysis alone, the high GR sandstone reservoirs would probably have been regarded as mudstone and interpreted to be non-reservoir, which has greatly affected the exploration and exploitation of oil and gas reservoir to some extent. Therefore, the principles and standards to distinguish high GR sandstone reservoir from … Web1 de jan. de 2004 · Gamma ray (GR) logs measure the natural radioactivity in formations and can be used for identifying lithologies and for correlating zones. Shale-free …
High gamma ray sandstone
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Web15 de dez. de 2024 · Comparing the variations in the values of gamma ray well logs, the calculated average grain size and measured average grain size of the Well Yue 112, it is found that 1) the calculated average grain size of some layers is lower than 0.01 mm, but these layers have a relative low gamma ray reading and are commonly interpreted as … Web27 de jun. de 2024 · These zones were characterized by the low gamma ray response, relatively high porosity, neutron–density crossover, and high resistivity value Figs. 12 and 13. The photoelectric effect values in Tables 2 and 4 and neutron-density response show the dominant reservoir lithology is from shaley sandstone to sandstone.
WebHowever, clean sandstone (i.e., with low shale content) might also produce a high gamma ray response if the sandstone contains potassium feldspars, micas, glauconite, or uranium-rich waters. In zones where the geologist is aware of the presence of potassium feldspars, micas, or glauconite,….Therefore, If a zone has a high potassium content coupled with a … WebAirborne gamma ray spectrometric (AGRS) and magnetic (AM) surveys were undertaken between 1986-1987 by Atomic Minerals Division, to locate uranium mineralisation along Son-Narmada rift zone. The imaging and interpretation of gridded AGRS data revealed many areas of anomalous radio elemental concentrations.
Web1 de jan. de 2013 · Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China … Web13 de abr. de 2024 · The filling characteristics of the underground river and the underlying mechanism thereof were explained, and the conduits in different periods were compared: (i) Sandstone and sandstone-cemented breakdown breccia primarily filled with a combination of mechanical and collapse fillings developed in the doline.
Web30 de abr. de 2024 · The coarse-grained sandstone and calcareous mudstone intervals show low response of gamma-ray, while mudstone intervals are indicated by high response of gamma-ray. The use of spectral gamma responses is then useful for detailed interpretation of depositional environments, because K, Th, and U are found to be …
Web16 de fev. de 2004 · Its range of distribution is located in the lower central part of the cross-plot. For andesite, the resisitivity value is also comparatively high, often above 200 Ωm, and the gamma-ray value is about 60 API. The gamma-ray value for andesitic tuff is 70–80 API, and that of the resistivity is comparatively low, although it varies widely. dusty bones cookersWeb1 de nov. de 1991 · The generally high background is considered to be due to potassium feldspar concentrations of up to 27% and this is enhanced by the presence of radioactive … cryptomineldtWeb31 de mai. de 2013 · The results show that the high-gamma-ray reservoirs have the typical logging response characteristics, such as significant spontaneous potential (SP) negative … dusty blush tank topWeb1 de jan. de 2010 · The well log curve features of the higher gamma ray, higher acoustic transit time and lower resistivity of the high-gamma-ray reservoirs are similar to that of … cryptomine คือWeb13 de abr. de 2024 · The Songliao Basin is located in Northeast China, covers an area of more than 260,000 square kilometers and is one of the largest oil–gas basins in China (Jia et al., 2016; Zhao et al., 2016; Yang et al., 2024; Hou et al., 2024).In the deep fault depression of the basin, there is a huge volcanic reservoir of more than 10 11 stere of … cryptomine to thbWebHigh natural gamma sandstones consist of terrigenous detrital rocks with particle sizes ranging from silt to sand. They represent turbidite deposits characterized by high … cryptomine raspberry piWeb31 de mai. de 2013 · The results show that the high-gamma-... Characteristics of High‐Gamma‐Ray Sandstone Reservoirs for Yanchang Formation in Ordos Basin - ZHANG - 2010 - Chinese Journal of Geophysics - Wiley Online Library dusty bones