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CHARACTERISTICS OF TERTIARY RESERVOIR SEDIMENTARY FACIES IN THE NORTH PART OF QAIDAM BASIN

Peng Wang

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Abstract

The north part of the Qaidam basin is one of the three oil\|bearing units in Qinghai oilfield. The Tertiary reservoirs are mainly distributed in the strata from low\|Gancaigou formation to low\|Youshashan formation. The former research on Tertiary sedimentary facies determined that fluvial and flood plain are the main facies. A comprehensive study on petrology, structures, facies models, facies associations and sedimentary systems in this paper shows that the main facies in Tertiary are shore\|lake and shallow\|lake subfacies, and lake delta facies from low\|Gancaigou formation to low\|Youshashan formation. This new conclusion is very important in theory and economics during the course of calculating the geological reserve of Tertiary.

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What this paper is about

The north part of the Qaidam basin is one of the three oil\|bearing units in Qinghai oilfield. The Tertiary reservoirs are mainly distributed in the strata from low\|Gancaigou formation to low\|Youshashan formation. The former research on Tertiary sedimentary facies determined that fluvial and flood plain are the main facies. A comprehensive study on petrology, structures, facies models, facies associations and sedimentary systems in this paper shows that the main facies in Tertiary are shore\|lake and shallow\|lake subfacies, and lake delta facies from low\|Gancaigou formation to low\|Youshashan formation. This new conclusion is very important in theory and economics during the course of calculating the geological reserve of Tertiary.

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Available abstract

The north part of the Qaidam basin is one of the three oil\|bearing units in Qinghai oilfield. The Tertiary reservoirs are mainly distributed in the strata from low\|Gancaigou formation to low\|Youshashan formation. The former research on Tertiary sedimentary facies determined that fluvial and flood plain are the main facies. A comprehensive study on petrology, structures, facies models, facies associations and sedimentary systems in this paper shows that the main facies in Tertiary are shore\|lake and shallow\|lake subfacies, and lake delta facies from low\|Gancaigou formation to low\|Youshashan formation. This new conclusion is very important in theory and economics during the course of calculating the geological reserve of Tertiary.

Key concepts: Facies, Geology, Fluvial, Structural basin, Sedimentary rock, Geochemistry, Delta, Petrology

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CHARACTERISTICS OF TERTIARY RESERVOIR SEDIMENTARY FACIES IN THE NORTH PART OF QAIDAM BASIN — Research Paper | ScholarLens