Matches in SemOpenAlex for { <https://semopenalex.org/work/W2897070187> ?p ?o ?g. }
- W2897070187 endingPage "562" @default.
- W2897070187 startingPage "548" @default.
- W2897070187 abstract "In order to better predict the petrophysical properties of the tight sandstone reservoirs in the Upper Triassic Yanchang Formation, Ordos Basin, China, the nature of the diagenetic system involved was investigated using a suite of petrographic and geochemical techniques including thin section and X-Ray Diffraction analysis, scanning electron microscopy, MAPS mineralogy, Cathodeluminescence, electron probe microanalysis and fluid inclusion analysis on a set of selected tight sandstone samples. The sandstones investigated are texturally mature but compositionally immature with an average framework grain composition of Q32F41L27. Authigenic quartz, calcite, and chlorite coatings are the major cements, while feldspars are partially dissolved. Two groups of quartz cement are present in the tight sandstone reservoirs. Smectite to illite conversion provided silica source for the first group of quartz overgrowth (Qo-I), while the silica source for the second quartz overgrowth (Qo-II) was mainly originated from feldspar dissolution. Calcite cements consist of two types, namely Ca-I and Ca-II. The Ca-I calcite cement contains no chlorite coatings and have higher concentrations of Fe2+ and Mg2+, whereas the Ca-II calcite cement developed over the chlorite coatings. Plagioclase dissolution appears to be always accompanied by calcite cementation, while K-feldspar albitization forms euhedral albite locally. The burial diagenesis processes were, in most cases, not episodic but occurred as slow adjustments in response to increased burial depths and temperatures. In all the studied diagenetic minerals, elemental distributions appear to be strictly constrained by the interaction of authigenic minerals involved, indicating that the chemical reactions during the diagenesis comply well with the general principle of mass balance. The diagenesis in the Upper Triassic Yanchang Formation tight sandstones was thus mainly developed in a closed geochemical system, where mineral dissolution and precipitation are approximately balanced, and diagenetic fluids were not affected by external sources significantly. Mechanical compaction has played a more important role in destroying the primary porosities of the Upper Triassic Yanchang Formation than the cementation." @default.
- W2897070187 created "2018-10-26" @default.
- W2897070187 creator A5003983927 @default.
- W2897070187 creator A5016451725 @default.
- W2897070187 creator A5028115428 @default.
- W2897070187 creator A5033075045 @default.
- W2897070187 creator A5034107193 @default.
- W2897070187 creator A5054297793 @default.
- W2897070187 creator A5055065745 @default.
- W2897070187 creator A5084344063 @default.
- W2897070187 date "2019-01-01" @default.
- W2897070187 modified "2023-10-17" @default.
- W2897070187 title "Diagenesis of tight sandstone reservoirs in the Upper Triassic Yanchang Formation, southwestern Ordos Basin, China" @default.
- W2897070187 cites W1443000514 @default.
- W2897070187 cites W1866526036 @default.
- W2897070187 cites W1964668356 @default.
- W2897070187 cites W1976292932 @default.
- W2897070187 cites W1987842632 @default.
- W2897070187 cites W1990330246 @default.
- W2897070187 cites W1996737977 @default.
- W2897070187 cites W2001000552 @default.
- W2897070187 cites W2001487723 @default.
- W2897070187 cites W2002137819 @default.
- W2897070187 cites W2006145317 @default.
- W2897070187 cites W2014366360 @default.
- W2897070187 cites W2019199746 @default.
- W2897070187 cites W2020012193 @default.
- W2897070187 cites W2044501279 @default.
- W2897070187 cites W2044537972 @default.
- W2897070187 cites W2044989984 @default.
- W2897070187 cites W2047155676 @default.
- W2897070187 cites W2052694638 @default.
- W2897070187 cites W2056413389 @default.
- W2897070187 cites W2056755178 @default.
- W2897070187 cites W2062647012 @default.
- W2897070187 cites W2071235830 @default.
- W2897070187 cites W2072060587 @default.
- W2897070187 cites W2072964180 @default.
- W2897070187 cites W2079604593 @default.
- W2897070187 cites W2081916534 @default.
- W2897070187 cites W2086441537 @default.
- W2897070187 cites W2088039166 @default.
- W2897070187 cites W2091197632 @default.
- W2897070187 cites W2093565662 @default.
- W2897070187 cites W2100212219 @default.
- W2897070187 cites W2110527041 @default.
- W2897070187 cites W2126963790 @default.
- W2897070187 cites W2137320702 @default.
- W2897070187 cites W2157402307 @default.
- W2897070187 cites W2297482810 @default.
- W2897070187 cites W2306408647 @default.
- W2897070187 cites W2486637737 @default.
- W2897070187 cites W2519525319 @default.
- W2897070187 cites W2541828453 @default.
- W2897070187 cites W2594003132 @default.
- W2897070187 cites W2732626546 @default.
- W2897070187 cites W975730588 @default.
- W2897070187 doi "https://doi.org/10.1016/j.marpetgeo.2018.10.031" @default.
- W2897070187 hasPublicationYear "2019" @default.
- W2897070187 type Work @default.
- W2897070187 sameAs 2897070187 @default.
- W2897070187 citedByCount "70" @default.
- W2897070187 countsByYear W28970701872019 @default.
- W2897070187 countsByYear W28970701872020 @default.
- W2897070187 countsByYear W28970701872021 @default.
- W2897070187 countsByYear W28970701872022 @default.
- W2897070187 countsByYear W28970701872023 @default.
- W2897070187 crossrefType "journal-article" @default.
- W2897070187 hasAuthorship W2897070187A5003983927 @default.
- W2897070187 hasAuthorship W2897070187A5016451725 @default.
- W2897070187 hasAuthorship W2897070187A5028115428 @default.
- W2897070187 hasAuthorship W2897070187A5033075045 @default.
- W2897070187 hasAuthorship W2897070187A5034107193 @default.
- W2897070187 hasAuthorship W2897070187A5054297793 @default.
- W2897070187 hasAuthorship W2897070187A5055065745 @default.
- W2897070187 hasAuthorship W2897070187A5084344063 @default.
- W2897070187 hasConcept C115393850 @default.
- W2897070187 hasConcept C127313418 @default.
- W2897070187 hasConcept C130452526 @default.
- W2897070187 hasConcept C133916931 @default.
- W2897070187 hasConcept C151730666 @default.
- W2897070187 hasConcept C17409809 @default.
- W2897070187 hasConcept C191897082 @default.
- W2897070187 hasConcept C192562407 @default.
- W2897070187 hasConcept C199289684 @default.
- W2897070187 hasConcept C2775859737 @default.
- W2897070187 hasConcept C2777844515 @default.
- W2897070187 hasConcept C2778520076 @default.
- W2897070187 hasConcept C2779181077 @default.
- W2897070187 hasConcept C2779429093 @default.
- W2897070187 hasConcept C2779870107 @default.
- W2897070187 hasConcept C2780191791 @default.
- W2897070187 hasConcept C40212044 @default.
- W2897070187 hasConcept C523993062 @default.
- W2897070187 hasConcept C59235061 @default.
- W2897070187 hasConcept C94556721 @default.
- W2897070187 hasConceptScore W2897070187C115393850 @default.
- W2897070187 hasConceptScore W2897070187C127313418 @default.