2%時,排烴效率變化不明顯;有機質(zhì)類型越好,排烴效率越高;有機質(zhì)成熟度越高,排烴效率越高。關 鍵 詞:有機質(zhì)豐度;有機質(zhì)類型;有機質(zhì)" />
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摘 要:烴源巖生烴對排烴效率有著重要的影響,其影響因素主要可以分為有機質(zhì)的豐度、有機質(zhì)的類型、有機質(zhì)的成熟度三個方面。通過研究松遼盆地北部齊家古龍凹陷青山口組各類型有機質(zhì)的原始生烴潛力,并計算古12井和英16井的排烴效率,分析其有機質(zhì)豐度、有機質(zhì)類型、有機質(zhì)成熟度對排烴效率的影響,得出以下結(jié)論:有機質(zhì)豐度越好,排烴效率越高,當TOC>2%時,排烴效率變化不明顯;有機質(zhì)類型越好,排烴效率越高;有機質(zhì)成熟度越高,排烴效率越高。
關 鍵 詞:有機質(zhì)豐度;有機質(zhì)類型;有機質(zhì)成熟度;排烴效率
中圖分類號:TQ 028 文獻標識碼: A 文章編號: 1671-0460(2015)10-2391-04
Analysis on Factors Affecting the Hydrocarbon Expulsion Efficiency
From the Perspective of Hydrocarbon Generation
ZHANG Wen-hua1,XUE Hai-tao2,TIAN Shan-si2,DU Tian-tian2, WANG Tao3
(1. Northeast Petroleum University, Heilongjiang Daqing ,163000,China;
2. China University of Petroleum, Shandong Qingdao, 266580,China;
3. CNPC Greatwall Grilling Company Fracturing and Acidizing Technology Institute, Liaoning Panjin 124010,China)
Abstract: The hydrocarbon generation of source rocks has a significant influence to the expulsion efficiency. The influence factors can be divided into three aspects: the abundance of organic matter, organic matter type and the maturity of organic matter. The expulsion efficiencies of Gu 12 and Gu 16 wells of Qijiagulong depression in Northern Songliao Basin were calculated by studying the original hydrocarbon potential of various types of organic matter of Qingshankou formation. The influence of the abundance of organic matter, organic matter type and the maturity of organic matter to the expulsion efficiency was analyzed. The results show that, the better the abundance of organic matter, the higher the expulsion efficiency; When TOC> 2%, the expulsion efficiency change is not significant; The better the type of organic matter, the higher the expulsion efficiency; The higher the maturity of organic matter ,the higher the expulsion efficiency.
Key words: Organic matter abundance; Organic matter type; Organic matter maturity ; Expulsion efficiency
排烴效率對于常規(guī)和非常規(guī)油氣的勘探都有重要的指導作用,排烴效率對于定量評價烴源巖,相對準確地計算油氣資源量,動態(tài)地分析油氣的運聚過程及其與圈閉形成時期的匹配關系,進而預測油氣的分布規(guī)律都有重要的理論和實踐意義。烴源巖的排烴效率是受烴源巖的生烴量及其自身的殘烴量控制的。烴源巖的生烴量則受有機質(zhì)豐度、有機質(zhì)類型和有機質(zhì)成熟度的影響,烴源巖的殘烴量不僅受上述三種因素的影響,還受烴源巖自身的性質(zhì)(巖性、孔隙度、滲透率等)的影響[1,2]。本文主要研究有機質(zhì)豐度、類型和成熟度對排烴效率的影響。
松遼盆地青山口組是該盆地主要的烴源巖層,烴源巖厚度大,成熟度從低熟到高成熟階廣泛分布,有機質(zhì)類型也涵蓋了不同的類型,TOC變化也大,有利于對研究烴源巖內(nèi)部因素對排烴效率的影響。通過……