印尼南蘇門答臘盆地油氣成藏規(guī)律研究及油氣藏精細(xì)勘探
[Abstract]:Based on the theory of sedimentology, sequence stratigraphy and mathematical geology, this paper deeply studies the development and distribution of the reservoir in the layer-by-layer sequential grid under the control of the phase-controlled base level cycle, and provides guidance for the study of reservoir formation law and the fine exploration of oil and gas. Based on a large number of drilling data, well-logging data and seismic data, combined with the geological outcrop section as the first-hand research material, the phase-controlled deposition is closely combined with the mathematical modeling on the basis of the study of the sedimentary system and the reference-level cycle sequence stratigraphy, and various geological variables are fully utilized, In particular, the accurate geological model of the reservoir collective distribution in the sequence framework is established by using the reservoir geology variable which is closely related to the distribution of the sand body. Based on the precise geological model, the development and distribution of the reservoir are studied in the base level cycle sequence framework, and the target reservoir can be more clearly recognized, the accuracy of the reservoir prediction is improved, And the success rate of rolling and exploration in the oil-gas field area is further improved. The research idea of the paper is the inheritance and development of the traditional sequence stratigraphy theory. The utility and limitations of the Vail theory, the Galloway theory, the Johnson's theory and the Cross theory are deeply studied. The former three points stress that the change of sea level is the main mechanism to control the formation and distribution of the layer-by-layer sequence, and the study on the continental strata is limited. Cross theory, it is emphasized that the principle of the reference plane is applicable to the marine and continental strata, and the practice of oil and gas exploration in recent years has shown that this theory and method are more applicable to the alluvial fan and the river delta which are not directly controlled by the elevation of the sea (lake) plane. The fine division and contrast of the land-phase deposition system, such as the submarine fan. But it has some limitations for some special sedimentary system, such as the sequence division of the deep bedrock weathering crust. Therefore, under the guidance of the theory of the traditional sequence stratigraphy, the research method of phase-controlled deposition is introduced, and the model of the sequence formation is divided and compared by using the model of the sedimentary facies belt and the reference plane cycle sequence stratigraphy of the Cross, and then the method of the mathematical geological modeling is used. The accurate geological model of the reservoir collective distribution in the sequence framework is established, so that the accuracy of the reservoir prediction research is greatly improved. The three-level sequence stratigraphic framework is divided into three-level sequence stratigraphic framework to analyze the sedimentary system and sedimentary facies of the South Sumatra Basin in the south of the study area under the guidance of the phase-controlled reference-level cycle sequence stratigraphy, and the favorable reservoir facies belt is predicted. By using the theory of sequence stratigraphy and sedimentology to study the combination analysis of the oil and gas reservoirs in the South Sumatra Basin, the relationship between the oil and gas and the law of oil and gas accumulation are studied, and the theoretical basis and the scientific basis for the rolling exploration and rational development of the oil and gas field are provided. This paper is based on the research work of the "Sequence Stratigraphy and Hydrocarbon Accumulation in the South Sumatra Basin, Indonesia" of the key project of China's oil key--"Research on the Exploration and Development of the Overseas Oil and Gas Field" (No. Y2013JF8-02). The three-level sequence stratigraphic framework is divided into three-level sequence stratigraphic framework, and the characteristics of sedimentary facies of different sequences are analyzed. By combining the sequence stratigraphy and the theory of sedimentology, the combination of the basin and gas reservoirs is analyzed, the favorable reservoir facies belt is predicted, the understanding of the oil and gas accumulation law is deepened, the identification method and the exploration idea of the formation-lithologic reservoir are put forward, and the oil and gas exploration in the research area is also guided. The following research work is carried out: the characteristics of regional structure and its structural evolution characteristics; the establishment of the stratigraphic framework of the drilling, the formation of the seismic sequence stratigraphic framework, the formation of the sequence system and the evolution of the sedimentary filling, the study of the sequence boundary of the main oil-gas-bearing strata, and the seismic facies, Study on sedimentary facies and its distribution characteristics; seismic attribute analysis, reservoir inversion and evaluation; formation-lithological reservoir identification and parities; response characteristics of seismic frequency and oil and gas detection; sequence stratigraphy and oil and gas accumulation law; The evaluation of rolling exploration targets and the fine exploration of oil and gas fields. On the basis of the above research work, the following main innovation points and application effects are obtained:1. The bottleneck problem of long-term "Lack of understanding of reservoir" in the research area is solved. Based on the analysis of single well cycle and multi-well sequence comparison, the sequence stratigraphic division of the study area is carried out based on the analysis of single well cycle and the comparative study of multi-well sequence. Based on the method of the combination of the deterministic modeling and the stochastic modeling, the reservoir phase control model under the study area sequence is established, and the accurate geological model of the target layer is established. On this basis, the distribution characteristics of the sedimentary facies of the target layer are studied, and the reservoir in the sequence interface is predicted accurately.2. The study method of reservoir prediction, oil-gas reservoir relation and the reservoir-forming rule under a set of "facies-controlled sequence stratigraphy" control is created. A quantitative model of reservoir prediction and reservoir description is established by using the phase-controlled sequence model and well bore data and the characteristics of the seismic attributes in the reservoir prediction and the reservoir cognition by using the phase-controlled sequence model and well bore data in the study area sequence, combining the drilling comprehensive analysis, the target layer and the key target area of the oil and gas exploration, and establishing a reservoir prediction and reservoir description quantitative model, It is considered that the oil and gas accumulation in this area is: in addition to the large-scale tectonic oil and gas reservoir in the west, there is a large amount of formation-lithologic reservoir in the middle and eastern slope areas, and the direction of oil and gas rolling and fine exploration in the next step is defined. A new method and new method for reservoir identification, oil and gas reservoir cognition and fine exploration of oil and gas reservoir are formed, and a set of "Sequence-controlled deposition, sedimentary determination of reservoir and reservoir-determined oil and gas reservoir" formation-lithological and oil-gas accumulation model is summarized. The exploration ideas and working methods of the formation-lithological oil and gas reservoir are put forward, and it is continuously improved in the practical work. In the study of the fine exploration of oil and gas in the research area, the sequence stratigraphy, sedimentology and reservoir study are combined organically, the prediction precision of the target layer is greatly improved, the cognition of the formation-lithologic reservoir is enhanced, the fine exploration of the oil and gas is effectively guided, and good effects are obtained. Through the application and implementation of the research results, the oil and gas production of the block is increased to over 2 million tons of oil equivalent of the oil in the middle of 2010, up to nearly 6 million tons of oil equivalent in the peak period of 2010, and the oil and gas production in the last few years is maintained at about 5 million tons of oil equivalent.
【學(xué)位授予單位】:成都理工大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位授予年份】:2016
【分類號(hào)】:P618.13
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