【摘要】：低阻油氣層是一種特殊的、隱蔽性極強(qiáng)的油氣層,國(guó)內(nèi)外將其定義為:油層電阻率小于或接近于圍巖電阻率,或者與水層電阻率差別不大甚至出現(xiàn)相互交叉變化的不易識(shí)別的油氣層;或定義為電阻增大率小于2的油氣層。其本質(zhì)問(wèn)題是難識(shí)別性或隱蔽性,由于復(fù)雜的地質(zhì)成因和形成條件,油層與水層在電性上難以準(zhǔn)確區(qū)分,導(dǎo)致其識(shí)別評(píng)價(jià)難度較大,依靠傳統(tǒng)的識(shí)別評(píng)價(jià)方法很容易低估或漏掉該類(lèi)油氣層。近年來(lái),低阻油氣層識(shí)別方法成為了研究的熱點(diǎn),而且也成為了油田勘探開(kāi)發(fā)重點(diǎn)攻關(guān)對(duì)象之一。渤海海域的勘探歷經(jīng)幾十年的歷史,隨著勘探認(rèn)識(shí)的加深、勘探程度的不斷提高,在一些地區(qū)陸續(xù)發(fā)現(xiàn)了較多的低阻油氣層,經(jīng)測(cè)試證實(shí),許多低電阻率油氣層具有較高的產(chǎn)能。因此,研究低阻油氣層識(shí)別評(píng)價(jià)方法有著非常重要的實(shí)踐意義。本文通過(guò)分析渤海海區(qū)低阻油層的表現(xiàn)特征、成因類(lèi)型,以及不同電阻率油氣層地化錄井資料特征及影響程度對(duì)比研究,優(yōu)選了地化錄井技術(shù)識(shí)別低阻油氣層敏感參數(shù),形成一套適合不同成因的低阻油氣層有效的識(shí)別方法和評(píng)價(jià)手段,在渤海海區(qū)得到了有效的推廣和深化應(yīng)用,為低電阻率油層測(cè)錄井綜合解釋評(píng)價(jià)研究積累寶貴的經(jīng)驗(yàn)和認(rèn)識(shí),在油氣勘探和儲(chǔ)量落實(shí)過(guò)程中發(fā)揮了重要作用。
[Abstract]:The low-resistance oil-gas layer is a kind of special, well-concealed oil-gas layer, and its definition is that the resistivity of the oil layer is less than or close to the resistivity of the surrounding rock, or the oil-gas layer which is not easy to be recognized by the difference of the resistivity of the water layer and the resistivity of the water layer does not even change with each other; Or an oil and gas layer defined as an increase in resistance of less than 2. The essential problem is difficult to identify or conceal. Due to the complex geological formation and formation conditions, the oil layer and the water layer are difficult to accurately distinguish between the electric property and the water layer, so that the identification and evaluation difficulty is large, and the oil-gas layer can be underestimated or missed by the traditional identification and evaluation method. In recent years, the identification method of low-resistance oil and gas layer has become the hot spot of the research, and has also become one of the key problems in the exploration and development of oil field. The exploration of the Bohai Sea is a history of several decades. With the deepening of the exploration and the increasing of the degree of exploration, many low-resistivity oil and gas layers have been discovered in some areas, and the tests confirm that many of the low-resistivity oil and gas layers have higher production capacity. Therefore, it is of great practical significance to study the evaluation method of low-resistance oil and gas layer identification. In this paper, by analyzing the characteristics of the low-resistivity oil layer in the Bohai Sea area, the origin type, and the characteristics of the geochemical logging data and the influence degree of the different resistivity oil and gas layers, the sensitive parameters of the low-resistance oil and gas layer are preferably identified by the geochemical logging technology. An effective identification method and an evaluation method for a low-resistance oil-gas layer with different origin are formed, and an effective promotion and deepening application is obtained in the Bohai sea area, and valuable experience and knowledge are accumulated for the comprehensive interpretation and evaluation research of the low-resistivity oil-layer logging well. It plays an important role in the process of oil and gas exploration and reserve implementation.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P618.13

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本文編號(hào)：2494318