Natural Gas Geoscience

A new understanding of the causes of the banded sand body in the fourth member of Akekule Formation, eastern Tahe Oilfield, Tarim Basin

Jin-hua Liu, Rui Guo, Hong-tao Ma, Bu-yu Xia, Wei Xian, A-ming Jiang, Zheng-jun Ge

Natural Gas Geoscience, 2019, 30(9): 1253-1262. DOI: 10.11764/j.issn.1672-1926.2019.06.002

地层				视厚度/m	岩性简述
系	统	组	代号	视厚度/m	岩性简述
三叠系	上统	哈拉哈塘组	T₃h²	40~60	深灰色泥岩夹灰色泥质粉砂岩，底部灰黑色炭质泥岩为三叠系区域标志层
	上统	哈拉哈塘组	T₃h¹	45~65	浅灰色含砾细粒长石岩屑砂岩、细粒长石岩屑砂岩夹深灰色泥岩、粉砂质泥岩，即三叠系上油组
	中统	阿克库勒组	T₂a⁴	85~95	深灰色泥岩与浅灰色细粒长石岩屑砂岩、泥质粉砂岩呈略等厚互层
			T₂a³	25~45	浅灰色细粒长石岩屑砂岩夹深灰色粉砂质泥岩，即三叠系中油组
			T₂a²	13~30	灰色泥岩、粉砂质泥岩
			T₂a¹	112~131	浅灰色细粒长石岩屑砂岩夹灰色粉砂质泥岩
	下统	柯吐尔组	T₁k	30~100	灰绿、深灰色泥岩，局部为褐色泥岩，偶夹灰色粉砂岩、砂岩

Table 1 Table of strata encountered of the Triassic, east of Tahe Oilfield

Other figure/table from this article

Fig.1 Tectonic zoning map in northern Tarim Basin
Fig.2 Triangular chart of rock classification of the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.3 Lithologic characteristics of the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.4 Sedimentary structure characteristics of the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.5 Granularity characteristics of the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.6 The phase sequence characteristics of the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.7 The north-south well-tie sections in the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.8 The attribute prediction map of the No.5 sublayer in the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.9 The plane figure of microscopic sedimentary facies of the No.5 sublayer in the fourth member of Akekule Formation, east of Tahe Oilfield
Fig.10 Genetic evolution model of shore-shallow lacustrine sandy bars in eastern Tahe Oilfield