Architecture characterization of Ordovician fault-controlled paleokarst carbonate reservoirs in Tuoputai, Tahe oilfield, Tarim Basin, NW China

ZHANG Wenbiao,DUAN Taizhong,LI Meng,ZHAO Huawei,SHANG Xiaofei,WANG Yan

Fig. 1. Overview of and distribution of large-scale main faults in the study area (modified according to reference [26]). P2—Middle Permian; C2x—Upper Carboniferous Xiaohaizi Formation; C1kl—Lower Carboniferous Karasayi Formation; C 1b—Lower Carboniferous Bachu Formation; D3d—Upper Devonian Donghetang Formation; D1-2—Middle-Lower Devonian; S2-3—Middle-Upper Silurian; S1k—Lower Silurian Kepingtag Formation; O3s—Upper Ordovician Sangtam Formation; O3l—Upper Ordovician Lianglitage Formation; O3q—Upper Ordovician Qalbak Formation; O2yj—Middle Ordovician Yijianfang Formation; O1-2y—Middle and Lower Ordovician Yingshan Formation; O1p—Lower Ordovician Penglaiba Formation; —C—Cambrian; T65—The reflection wave interface of the Lower Carboniferous standard limestone (bimodal limestone) top; T 7 0—the reflection wave interface of the Ordovician top; T74—the reflection wave interface of the unconformity caused by the mid-Caledonian tectonic movement; T76 —the reflection wave interface of upper and lower members of Yingshan Formation; T8 0—the reflection wave interface of the Cambrian top; T9 0—the reflection wave interface of the Sinian top; F1—TP12CX fault; F2—S99 fault; F3—Langa fault; F4—T708 fault; F5-T707 fault.