【摘要】：本文針對(duì)田5斷塊特定的油藏地質(zhì)特點(diǎn)和開(kāi)發(fā)現(xiàn)狀,運(yùn)用一些新的技術(shù)手段,在前人對(duì)該區(qū)研究認(rèn)識(shí)的基礎(chǔ)上,對(duì)目的層段進(jìn)行單砂層級(jí)別的精細(xì)地層劃分對(duì)比,并利用三維地震資料結(jié)合地層劃分對(duì)比的結(jié)果重新進(jìn)行構(gòu)造解釋,在弄清構(gòu)造特征的基礎(chǔ)上,利用鄰區(qū)的實(shí)驗(yàn)數(shù)據(jù)結(jié)合測(cè)井資料重新對(duì)儲(chǔ)層進(jìn)行測(cè)井解釋,并依據(jù)解釋結(jié)果對(duì)儲(chǔ)層的宏觀非均質(zhì)性進(jìn)行研究、對(duì)儲(chǔ)層進(jìn)行分類(lèi)評(píng)價(jià)。在以上研究?jī)?nèi)容的基礎(chǔ)上,建立儲(chǔ)層三維地質(zhì)模型,為后期的油藏?cái)?shù)值模擬工作奠定基礎(chǔ)。田5塊沙二上劃分為三個(gè)砂層組共40個(gè)小層,其中含油小層19個(gè),其中三砂組3小層,四砂組1小層、3小層、7小層是主力含油小層,砂體厚度較大,平面分布穩(wěn)定。通過(guò)精細(xì)構(gòu)造解釋研究認(rèn)為,該區(qū)由南北兩條邊界斷層切割而成,內(nèi)部又被一條近南北向斷層切割為東西兩個(gè)小斷塊,與前人研究結(jié)果相比,南北邊界斷層在平面上的形態(tài)有所變化,包括斷塊內(nèi)所發(fā)育次級(jí)斷層在內(nèi),共識(shí)別斷層4條,在垂向上三個(gè)砂層組的繼承性較好,構(gòu)造均為簡(jiǎn)單的單斜構(gòu)造。通過(guò)測(cè)井二次解釋的認(rèn)識(shí)成果,該區(qū)儲(chǔ)層為中孔中滲儲(chǔ)層,孔隙度的分布范圍大都在20%以上,滲透率的分布范圍在70×10-3μm2~100×10-3μm2之間。對(duì)儲(chǔ)層宏觀非均質(zhì)性研究認(rèn)為,儲(chǔ)層的層間層內(nèi)及平面非均質(zhì)行較強(qiáng),據(jù)此對(duì)儲(chǔ)層進(jìn)行分類(lèi)評(píng)價(jià),將該區(qū)儲(chǔ)層分為三大類(lèi),其中四砂組的一類(lèi)儲(chǔ)層明顯多于二、三砂組。對(duì)該區(qū)進(jìn)行儲(chǔ)量計(jì)算并建立儲(chǔ)層三維地質(zhì)模型,通過(guò)數(shù)據(jù)分布特征及模型儲(chǔ)量計(jì)算結(jié)果,對(duì)模型進(jìn)行檢驗(yàn)。田5斷塊油源主來(lái)來(lái)自于南部臨南洼陷,在北界斷層的封堵作用下聚集成藏,油的分布受構(gòu)造特征的影響,主要分布在北界斷層的構(gòu)造高點(diǎn)附近,由于內(nèi)部次級(jí)斷層的封閉作用,使得東西兩個(gè)斷塊分屬于不同的油水系統(tǒng),具有不用的油水界面。此外,油分布還受儲(chǔ)層非均質(zhì)性的影響,在垂向上,由于層間隔層及層內(nèi)夾層的發(fā)育,使各小層的油幾乎不存在相關(guān)性;在平面上,一般孔隙度滲透率較大的區(qū)域,是油分布的主要區(qū)域。
[Abstract]:In this paper, according to the specific reservoir geological characteristics and development status of Tian5 fault block, using some new technical means, on the basis of the previous people's understanding of this area, the fine stratigraphic classification and correlation of single sand layer level are carried out for the target formation. Using 3D seismic data combined with the result of stratigraphic division and correlation to reinterpret the structure, on the basis of making clear the structural characteristics, using the experimental data of the adjacent area combined with the logging data to reinterpret the reservoir logging. According to the interpretation results, the macroscopic heterogeneity of the reservoir is studied, and the reservoir is classified and evaluated. On the basis of the above research, the reservoir 3D geological model is established, which lays the foundation for the later reservoir numerical simulation. The upper part of Sha 2 of Tian5 block is divided into three sand formations, including 19 oil bearing layers, among which 3 are three sand formation, 1, 3 and 7 are the main oil bearing layers, and the thickness of sand body is large and the plane distribution is stable, the third sand formation is 3 layers, the fourth sand group is 1 small layer, 3 small layers, 7 layers are the main oil bearing substrata, the sand body thickness is large and the plane distribution is stable. Through fine structure interpretation, it is considered that the area is cut by two boundary faults in the north and south, and the interior is cut into two small fault blocks from east to west by a near south to north fault, which is compared with the results of previous studies. The morphology of the north and south boundary faults has changed in the plane, including the secondary faults developed in the fault blocks, and four faults have been identified. The inheritance of the three sand formations in the vertical direction is good, and the structures are all simple monoclinic structures. Through the recognition of the secondary interpretation of logging, the reservoir in this area is mesoporous and permeable, the porosity distribution range is more than 20%, and the permeability distribution range is between 70 脳 10-3 渭 m ~ (-2) and 100 脳 10 ~ (-3) 渭 m ~ (2). Based on the study of the macroscopic heterogeneity of reservoir, it is considered that the interlayer and plane heterogeneity of the reservoir is stronger. According to the classification and evaluation of the reservoir, the reservoir in this area can be divided into three categories, among which the reservoir of four sand groups is obviously more than that of the second and third sand groups. The reserves are calculated and the reservoir 3D geological model is established. The model is verified by the distribution characteristics of the data and the result of the model reserve calculation. The oil source of Tian5 fault block mainly comes from the south of the south depression and accumulates into a reservoir under the action of sealing the north boundary fault. The distribution of oil is affected by the structural characteristics, mainly near the structural high point of the north boundary fault. Due to the sealing effect of internal secondary faults, the two fault blocks belong to different oil-water systems and have no oil-water interface. In addition, oil distribution is also affected by reservoir heterogeneity. In vertical direction, because of the development of interval layer and intercalation, there is almost no correlation between oil in each layer. On the plane, the area with high porosity and permeability is the main area of oil distribution.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【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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