鄂爾多斯盆地杭錦旗地區(qū)不整合結(jié)構(gòu)類型及運移特征
發(fā)布時間:2018-03-16 08:30
本文選題:運移通道類型 切入點:不整合結(jié)構(gòu)類型 出處:《石油與天然氣地質(zhì)》2016年02期 論文類型:期刊論文
【摘要】:杭錦旗地區(qū)地處鄂爾多斯盆地北部邊緣,存在上古生界-下古生界、上古生界-元古生界、上古生界-太古界3個不整合面。根據(jù)已鉆井測井響應(yīng)特征以及巖心觀察和巖屑錄井資料,對研究區(qū)不整合空間結(jié)構(gòu)特征進行了詳細研究,同時結(jié)合不整合面上下巖性結(jié)構(gòu)的輸導(dǎo)作用以及氣藏分布等因素,分析了不整合結(jié)構(gòu)類型的運移特征,指出了優(yōu)勢運移通道的分布區(qū)域。研究表明,杭錦旗地區(qū)存在9種不整合結(jié)構(gòu)類型:砂-泥-砂、砂-泥-灰、砂-泥-變、砂-變、砂-灰、泥-泥-砂、泥-泥-灰、泥-泥-變和砂-泥-泥結(jié)構(gòu)類型。同時存在3種運移通道類型:雙運移通道Ⅰ型、單運移通道Ⅱ1型和單運移通道Ⅱ2型。雙運移通道Ⅰ型是優(yōu)勢運移通道,主要分布在3個區(qū)域:最大區(qū)域位于中東部,其目標圈閉是斷裂南側(cè)的十里加汗東圈閉以及斷裂北側(cè)的什股壕圈閉,其次是位于西部的新召東圈閉,東部阿鎮(zhèn)圈閉面積最小;十里加汗西圈閉雙運移通道相對不發(fā)育,有利于天然氣就近富集成藏。
[Abstract]:The Hangjinqi area is located in the northern margin of the Ordos Basin. There are Upper Paleozoic and Lower Paleozoic, Upper Paleozoic and Proterozoic. Three unconformities from the Upper Paleozoic to the Archaean. Based on the well logging response characteristics, core observation and cuttings logging data, the unconformity spatial structure of the studied area is studied in detail. At the same time, the migration characteristics of unconformity structure and the distribution of gas reservoir are analyzed, and the distribution area of dominant migration channel is pointed out, which is based on the transportation of upper and lower lithologic structure of unconformity surface and the distribution of gas reservoir. There are 9 types of unconformities in Hangjinqi area: sand-mud-sand, sand-mud-ash, sand-mud-change, sand-change, sand-ash, mud-mud-sand, mud-mud-ash, There are three types of migration channels: double migration channel type I, single migration channel type 鈪,
本文編號:1619118
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