欢喜岭油田低电阻油藏识别方法研究
发布时间：2018-07-26 18:35
【摘要】：欢喜岭油田处于辽河坳陷西部凹陷中南段,油藏类型丰富,有常规构造油藏、岩性油藏、地层油藏,同时也多区域分布存在着低电阻油层形成的油气藏,部分试油试采井见到工业油流,从目前研究成果来看,具有一定的勘探开发潜力。在对这类低电阻油藏的研究过程中,总结了一套系统的研究和识别方法。首先从低电阻油层的形成原因入手,欢喜岭油田低电阻油藏的成因主要有地质成因和物理成因两个方面。一是地质成因主要是指由构造作用形成的断层圈闭、微背斜圈闭或者岩性圈闭,如果这类圈闭构造幅度较低的话,油藏含油高度不是很高,油水分异作用就相对比较差,含油饱和度低,容易形成低阻油气藏。二是物理成因主要指储层内部因素(高不动水饱和度、粘土附加导电)、外部因素(主要指钻井液的侵入)及其它条件影响的复合因素。其次是根据区块不同来系统分析低电阻油藏的各方面特点:一是区域构造的影响,欢喜岭油田处于盆地边缘,圈闭普遍含油幅度较低,因此油藏方面特征具有低幅度圈闭(60-100m)、低含油饱和度(50-55%)、驱替压力小于0.15MPa,较小油水密度差(0.15-0.25g/cm3)等特点。二是欢喜岭油田处于盆地边缘,属于低能量环境,符合高不动水饱和度的形成条件(储层岩石颗粒较细、泥质含量高、粒度中值小,比表面积增大,流体吸附能力强)。由于孔隙结构变差,地层水矿化度降低,不动水本身具有较好的导电能力,后期随着不动水饱和度的逐渐升高,储层电阻率降低,如果油气运移到这类圈闭中则容易形成低电阻油藏。三是在电测资料的显示方面具有具有电阻率低、声波时差大、自然伽玛值增大、含油饱和度低、储层物性差(低孔低渗)的特点。最后总结欢喜岭油田低电阻油藏研究方法:用成藏模式分析分析法、气测录井识别技术和测井解释方法相结合的三种方法综合应用。在进行成藏模式研究的同时,充分利用相邻区块获工业油流井的试油试采资料,对比同类型油藏的沉积环境及储层物性。利用气测录井二次解释及电测资料模型的建立,对低电阻油藏进行必要的二次认识和评价,由此得到了一套利用成藏规律研究,气测录井附加识别和电测解释模型综合应用的低电阻油藏识别技术。
[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.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P631.3
本文编号：2146930
[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.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P631.3
【参考文献】
相关期刊论文 前1条
1 潘凌飞;浦长龙;;精细构造解释技术在辽河油田J136区块的应用[J];西部探矿工程;2011年03期
，本文编号：2146930
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