本文選題：石臼坨凸起陡坡帶　切入點(diǎn)：扇三角洲　出處：《大慶石油地質(zhì)與開(kāi)發(fā)》2017年06期

【摘要】：為了明確成巖作用對(duì)石臼坨凸起陡坡帶東三段扇三角洲砂體的控制作用,利用巖心觀察、鑄體薄片、掃描電鏡、陰極發(fā)光、巖石物性測(cè)試及包裹體等多種資料,分析了研究區(qū)砂體成巖演化規(guī)律、成巖作用強(qiáng)度和成巖改造孔隙度并利用"反演回剝法"以成巖演化序列為約束,根據(jù)鑄體薄片中各種自生礦物和溶解孔隙的面積百分比,定量計(jì)算壓實(shí)作用后各期成巖作用強(qiáng)度。研究結(jié)果表明:研究區(qū)東三段扇三角洲砂體目前處于中成巖B期,成巖演化序列為壓實(shí)作用→早期碳酸鹽膠結(jié)→長(zhǎng)石、巖屑、碳酸鹽膠結(jié)物溶蝕/高嶺石膠結(jié)→石英加大→晚期碳酸鹽膠結(jié);壓實(shí)作用導(dǎo)致目標(biāo)樣品面孔率損失率為34.86%,成巖早期菱鐵礦膠結(jié)和晚期含鐵碳酸鹽礦物膠結(jié)導(dǎo)致面孔率損失率為12.29%,以高嶺石為主的黏土礦物膠結(jié)導(dǎo)致面孔率損失率為42.68%,溶蝕作用使得面孔率增加率為22.21%;沉積物源中高剛性顆粒含量有助于原生孔隙的保存,以中酸性火成巖碎屑為主的易溶成分是溶蝕作用發(fā)生的主要對(duì)象;物源是形成優(yōu)質(zhì)儲(chǔ)層的先決條件,后期酸性流體對(duì)易溶組分的溶蝕有效改善了砂體物性。定量表征成巖演化過(guò)程,明確物性差異主控因素并有效恢復(fù)砂體孔隙度演化史,對(duì)指導(dǎo)渤海海域內(nèi)深層油氣勘探具有重要意義。
[Abstract]:In order to clarify the controlling of diagenesis on shijiutuo uplift steep slope section of East three fan delta sand body, based on the core observation, cast thin section, scanning electron microscope, cathodoluminescence, rock mechanics test and inclusions of various materials, the analysis of the formation of sand rock evolution rules, diagenetic intensity and diagenesis and porosity by back stripping method "to diagenetic evolution sequence constraints, according to the casting area percentage of autogenetic mineral and dissolved pore thin sections, quantitative calculation of compaction after each period of diagenesis intensity. The results show that the study area east three fan delta sand body in the middle B diagenetic stage, diagenetic sequence compaction, carbonate cementation, early feldspar, debris and carbonate cement dissolution / kaolinite cementation, quartz overgrowth and carbonate cementation; compaction caused loss of face sample rate 34.86%, early diagenetic siderite cementation and late carbonate cementation caused porosity loss rate was 12.29% and the cementation of clay minerals kaolinite leads to porosity loss rate is 42.68%, the rate of increase of face dissolution rate was 22.21%; in the sediment source high rigid particle content help the preservation of primary porosity and in acidic igneous rocks clastics soluble composition is the main object of dissolution; provenance is a prerequisite for the formation of high quality reservoir, the acid fluid on the soluble component of the solution can effectively improve the physical properties of sand bodies. The quantitative characterization of the diagenetic evolution process, clear differences between the main control the factors and effective recovery of sand body porosity evolution history, is of great significance to guide the Bohai sea in deep oil and gas exploration.

【作者單位】： 中海石油(中國(guó))有限公司天津分公司渤海石油研究院;中海油能源發(fā)展股份有限公司工程技術(shù)分公司;
【基金】：國(guó)家科技重大專項(xiàng)“渤海海域勘探新領(lǐng)域及關(guān)鍵技術(shù)研究”(2016ZX05024-003)
【分類號(hào)】：P618.13

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