本文選題：成巖作用　切入點(diǎn)：濁沸石膠結(jié)　出處：《巖性油氣藏》2017年02期

【摘要】：近年來(lái),在長(zhǎng)嶺斷陷龍鳳山地區(qū)埋藏深度大于3000 m的營(yíng)城組地層中,已有多口鉆井獲得工業(yè)油氣流,顯示出良好的油氣勘探潛力,但其優(yōu)質(zhì)儲(chǔ)層的形成機(jī)理與控制因素均不明確,制約了進(jìn)一步的油氣勘探和開(kāi)發(fā)。綜合利用巖心觀察、鑄體薄片分析、CT掃描、物性測(cè)試及恒速壓汞等方法,對(duì)龍鳳山地區(qū)優(yōu)質(zhì)儲(chǔ)層的形成機(jī)理與控制因素進(jìn)行了分析。結(jié)果表明:營(yíng)城組儲(chǔ)層物性主要受成巖作用的控制,根據(jù)膠結(jié)物的特征可劃分出壓實(shí)致密砂巖、綠泥石膠結(jié)砂巖和濁沸石膠結(jié)砂巖3種類型砂巖;在淡水充注和湖水作用的控制下,儲(chǔ)層膠結(jié)作用和溶蝕作用均具有明顯的分帶性,并據(jù)此建立了不同砂巖的發(fā)育模式。中成巖期濁沸石膠結(jié)砂巖受到有機(jī)酸的溶蝕,在扇三角洲外前緣形成優(yōu)質(zhì)儲(chǔ)層分布區(qū),有利于油氣的聚集成藏,可作為下一步勘探開(kāi)發(fā)的"甜點(diǎn)"區(qū)域。
[Abstract]:In recent years, in the Yingcheng formation with burial depth greater than 3000 m in Longfengshan area, Changling fault depression, many wells have been drilled to obtain industrial oil and gas flow, which shows good oil and gas exploration potential.However, the formation mechanism and controlling factors of its high quality reservoir are not clear, which restricts the further exploration and development of oil and gas.The formation mechanism and controlling factors of high quality reservoir in Longfeng Mountain area are analyzed by means of core observation, thin slice analysis of cast body CT scan, physical property test and constant speed mercury pressure.The results show that the reservoir physical properties of Yingcheng formation are mainly controlled by diagenesis. According to the characteristics of cementation, there are three types of sandstone: compacted tight sandstone, chlorite cemented sandstone and zeolite cemented sandstone.Under the control of fresh water filling and lake water, the reservoir cementation and dissolution have obvious zonation, and the development models of different sandstone have been established.In the middle diagenetic period, the zeolite cemented sandstone is dissolved by organic acid and forms a high quality reservoir distribution area on the front edge of fan delta, which is favorable for oil and gas accumulation and reservoir formation, and can be used as the "dessert" area for further exploration and development.
【作者單位】： 油氣藏地質(zhì)及開(kāi)發(fā)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室·西南石油大學(xué);西南石油大學(xué)地球科學(xué)與技術(shù)學(xué)院;中國(guó)石化西南油氣分公司勘探開(kāi)發(fā)研究院;中國(guó)石油長(zhǎng)慶油田分公司采油二廠華池作業(yè)區(qū);
【基金】：國(guó)家自然科學(xué)基金青年基金項(xiàng)目“大氣淡水在碎屑巖次生孔隙形成中的作用”(編號(hào):41302115)資助
【分類號(hào)】：P618.13

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