【摘要】：歡喜嶺油田處于遼河坳陷西部凹陷中南段,油藏類型豐富,有常規(guī)構(gòu)造油藏、巖性油藏、地層油藏,同時(shí)也多區(qū)域分布存在著低電阻油層形成的油氣藏,部分試油試采井見(jiàn)到工業(yè)油流,從目前研究成果來(lái)看,具有一定的勘探開(kāi)發(fā)潛力。在對(duì)這類低電阻油藏的研究過(guò)程中,總結(jié)了一套系統(tǒng)的研究和識(shí)別方法。首先從低電阻油層的形成原因入手,歡喜嶺油田低電阻油藏的成因主要有地質(zhì)成因和物理成因兩個(gè)方面。一是地質(zhì)成因主要是指由構(gòu)造作用形成的斷層圈閉、微背斜圈閉或者巖性圈閉,如果這類圈閉構(gòu)造幅度較低的話,油藏含油高度不是很高,油水分異作用就相對(duì)比較差,含油飽和度低,容易形成低阻油氣藏。二是物理成因主要指儲(chǔ)層內(nèi)部因素(高不動(dòng)水飽和度、粘土附加導(dǎo)電)、外部因素(主要指鉆井液的侵入)及其它條件影響的復(fù)合因素。其次是根據(jù)區(qū)塊不同來(lái)系統(tǒng)分析低電阻油藏的各方面特點(diǎn):一是區(qū)域構(gòu)造的影響,歡喜嶺油田處于盆地邊緣,圈閉普遍含油幅度較低,因此油藏方面特征具有低幅度圈閉(60-100m)、低含油飽和度(50-55%)、驅(qū)替壓力小于0.15MPa,較小油水密度差(0.15-0.25g/cm3)等特點(diǎn)。二是歡喜嶺油田處于盆地邊緣,屬于低能量環(huán)境,符合高不動(dòng)水飽和度的形成條件(儲(chǔ)層巖石顆粒較細(xì)、泥質(zhì)含量高、粒度中值小,比表面積增大,流體吸附能力強(qiáng))。由于孔隙結(jié)構(gòu)變差,地層水礦化度降低,不動(dòng)水本身具有較好的導(dǎo)電能力,后期隨著不動(dòng)水飽和度的逐漸升高,儲(chǔ)層電阻率降低,如果油氣運(yùn)移到這類圈閉中則容易形成低電阻油藏。三是在電測(cè)資料的顯示方面具有具有電阻率低、聲波時(shí)差大、自然伽瑪值增大、含油飽和度低、儲(chǔ)層物性差(低孔低滲)的特點(diǎn)。最后總結(jié)歡喜嶺油田低電阻油藏研究方法:用成藏模式分析分析法、氣測(cè)錄井識(shí)別技術(shù)和測(cè)井解釋方法相結(jié)合的三種方法綜合應(yīng)用。在進(jìn)行成藏模式研究的同時(shí),充分利用相鄰區(qū)塊獲工業(yè)油流井的試油試采資料,對(duì)比同類型油藏的沉積環(huán)境及儲(chǔ)層物性。利用氣測(cè)錄井二次解釋及電測(cè)資料模型的建立,對(duì)低電阻油藏進(jìn)行必要的二次認(rèn)識(shí)和評(píng)價(jià),由此得到了一套利用成藏規(guī)律研究,氣測(cè)錄井附加識(shí)別和電測(cè)解釋模型綜合應(yīng)用的低電阻油藏識(shí)別技術(shù)。
[Abstract]:The Hua Xi Ling oilfield is in the middle and south section of the western depression of the Liaohe depression, rich in reservoir types, with conventional structural reservoirs, lithologic and stratigraphic reservoirs. At the same time, there are oil and gas reservoirs formed by low resistance oil layers in the multi region distribution, and some oil test wells see industrial oil flow. From the present research results, it has certain exploration and development potential. In this kind of low resistance reservoir research process, a set of systematic research and identification methods are summed up. First, starting from the formation cause of low resistance oil layer, the cause of low resistance reservoir is mainly two aspects of geological cause and physical cause. One is that the geological cause mainly refers to the fault trap formed by the tectonic action and the micro anticline circle. If this type of trap is closed or lithologic trap, the oil bearing height of the reservoir is not very high, the oil and water differentiation is relatively poor, the oil saturation is low, and the low oil and gas reservoir is easy to form. Two is the physical origin mainly refers to the internal factors of the reservoir (high immovable water satiety and degree, the clay additional conduction), and the external factors (mainly refers to drilling fluid. In the second part, the characteristics of low resistance reservoirs are analyzed systematically according to the different blocks: one is the influence of regional structure, the joxi ridge oil field is on the edge of the basin, and the oil range is low in the trap, so the reservoir features have low amplitude trap (60-100m) and low oil saturation (50-55%). Displacement pressure is less than 0.15MPa, small oil and water density difference (0.15-0.25g/cm3) and other characteristics. Two Shxi ridge oil field is in the edge of the basin, which belongs to low energy environment, conforms to the formation conditions of high immovable water saturation (fine reservoir rock particles, high mud content, small median grain size, larger surface area and stronger fluid adsorption capacity). The formation water salinity is lower and the immovable water itself has good electrical conductivity. In the later period, the resistivity of the reservoir decreases with the gradual increase of the immovable water saturation. If oil and gas move to this type of trap, it will easily form low resistance reservoir. Three it has low resistivity, large sound wave time difference and natural gamma value in the display of electrical data. Increasing, low oil saturation and poor reservoir property (low porosity and low permeability). Finally, it summarizes the research methods of low resistance reservoir in the htik Oilfield: using the analysis and analysis method of reservoir pattern analysis, the combined application of three methods combining gas logging recognition technology and log interpretation method. The test oil test data of the industrial oil flow well, the sedimentary environment and the reservoir physical property of the same type reservoir are compared with the two interpretation of gas logging and the establishment of the electrical measurement data model, and the necessary two knowledge and evaluation for low resistance reservoir are carried out. Application of low resistance reservoir identification technology.
【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
【分類號(hào)】：P618.13;P631.3

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本文編號(hào)：2146930