【摘要】：四川盆地北部礁、灘氣藏領(lǐng)域經(jīng)過多年來的研究,取得了一系列的成果認識,對該區(qū)的滾動開發(fā)起到了重要的指導(dǎo)作用。本文以沉積學、有機地球化學、儲層地質(zhì)學、開發(fā)地質(zhì)學、油氣地質(zhì)學、構(gòu)造地質(zhì)學等理論為基礎(chǔ),綜合應(yīng)用研究區(qū)及鄰區(qū)內(nèi)已有的鉆井、錄井、測井等資料,開展了龍崗東部龍會場區(qū)塊飛仙關(guān)組地層劃分與對比、鮞粒灘展布規(guī)律、儲層特征、儲層發(fā)育控制因素、有利區(qū)優(yōu)選等方面的研究。 基于區(qū)域上飛仙關(guān)組向上變淺旋回特點,以沉積旋回理論為指導(dǎo),建立了相似巖性特征的地層劃分方案及地層格架,將研究區(qū)飛仙關(guān)組劃分為5個旋回,詳細而準確界定了各級旋回特征。同時,建立了相應(yīng)的沉積相模式,將研究區(qū)飛仙關(guān)組沉積相劃分為：開闊臺地相、局限臺地相、蒸發(fā)臺地相、海槽相-斜坡相帶和若干個亞相、微相,其中臺緣相為最有利儲集相帶。在臺緣相區(qū)內(nèi)Ⅱ、Ⅲ旋回是鮞粒壩(灘)發(fā)育的時期,Ⅱ旋回單層厚度最大,橫向分布最為穩(wěn)定,云化強烈,儲層發(fā)育最好。 區(qū)內(nèi)主要發(fā)育裂縫孔隙性鮞灘儲層,巖性主要為鮞粒白云巖和亮晶鮞�；�?guī)r,以Ⅲ類儲層為主,少見Ⅰ、Ⅱ類。沉積相、構(gòu)造裂縫、成巖作用是本區(qū)飛仙關(guān)組儲層三大受控因素,其中優(yōu)質(zhì)鮞灘儲層發(fā)育主要受混合水白云石化及兩期埋藏溶蝕作用等地質(zhì)因素影響。 研究認為,臺地邊緣相帶為最有利富集區(qū),隨海槽逐漸關(guān)閉、臺地增生,原斜坡相-海槽過渡區(qū)為次有利區(qū)。結(jié)合最新三維地震成果,計算得有利相帶面積為334.61km2,三維鮞灘“亮點'面積為212.96km2,鮞灘儲層最有利的發(fā)育區(qū)域面積約為178km2。借用前期參數(shù)成果,計算了龍會場、鐵山南鮞灘氣藏儲量,分別為27.216×108m3、46.79×108m3。并在各典型氣藏開展了18個圈閉資源量估算,18個圈閉的總面積為133.77km2,總資源量為325.43×108m3。
[Abstract]:After many years of research in the field of reef and beach gas reservoir in northern Sichuan basin, a series of achievements have been obtained, which plays an important role in guiding the rolling development of the area. This paper is based on the theories of sedimentology, organic geochemistry, reservoir geology, development geology, oil and gas geology, tectonic geology, etc. The stratigraphic division and correlation of the Feixianguan formation, the distribution law of oolitic beach, reservoir characteristics, reservoir development control factors, favorable area selection and so on are studied. Based on the upward shallow cycle characteristics of the Feixianguan formation in the region, and guided by the sedimentary cycle theory, the stratigraphic division scheme and stratigraphic framework with similar lithologic characteristics are established, and the Feixianguan formation in the study area is divided into five cycles. Detailed and accurate definition of the characteristics of cycles at all levels. The sedimentary facies of the Feixianguan formation are divided into open platform facies, limited platform facies, evaporation platform facies, trough facies, slope facies and several subfacies, microfacies. The platform margin facies is the most favorable reservoir zone. The 鈪，

本文編號：2401943