本文選題：延吉盆地 + 銅佛寺組��； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：延吉盆地是位于吉林省延邊朝鮮族自治州境內(nèi)的一小型中生代殘留斷陷盆地，自西向東表現(xiàn)為西部斜坡、中央坳陷、太平隆起與東部坳陷的兩坳一隆一斜坡構(gòu)造格局，南北長(zhǎng)50km，東西寬40km，總面積達(dá)1670km2。盆地主要發(fā)育白堊紀(jì)地層，銅佛寺組與大砬子組地層在盆地中廣泛分布，發(fā)育有數(shù)百米厚的砂巖與暗色泥巖，是盆地主要的油氣勘探目的層。圈閉是油氣聚集的場(chǎng)所，本次研究是在圈閉識(shí)別的基礎(chǔ)上，以石油地質(zhì)學(xué)理論指導(dǎo)下，選擇典型的圈閉評(píng)價(jià)參數(shù)，利用層次分析法等方法對(duì)圈閉進(jìn)行綜合評(píng)價(jià)，優(yōu)選出有利圈閉，這對(duì)發(fā)現(xiàn)新的油氣藏具有重要參考作用。 根據(jù)多口巖心、測(cè)井與地震資料分析，以層序地層學(xué)為指導(dǎo)，通過(guò)對(duì)盆地內(nèi)的地震剖面解釋?zhuān)⑴璧貥?gòu)造格架，識(shí)別出多種構(gòu)造圈閉類(lèi)型。其中，銅佛寺組識(shí)別出18個(gè)構(gòu)造圈閉，以斷塊、斷鼻為主，其面積介于0.5km2～21.35km2，閉合幅度100m～750m；大砬子組識(shí)別出18個(gè)構(gòu)造圈閉，同樣也以斷塊、斷鼻為主，面積介于0.26km2～39.3km2，閉合幅度50～350m。 有機(jī)地球化學(xué)測(cè)試分析資料表明，銅佛寺組暗色泥巖是盆地主要的烴源巖。有效烴源巖有效烴源巖主要分布在朝陽(yáng)川凹陷、清茶館凹陷、德新凹陷三個(gè)凹陷中，平均累計(jì)厚度在200m左右，分布面積達(dá)400多平方公里，該套烴源巖具有一定的資源潛力。烴源巖有機(jī)質(zhì)豐度高，有機(jī)碳分布范圍0.26%～5.95%，平均值為2.18%；有機(jī)質(zhì)類(lèi)型以Ⅱ型為主；朝陽(yáng)川凹陷與清茶館凹陷中的烴源巖處于低熟～成熟階段，德新凹陷中的烴源巖處于低熟階段。 銅佛寺組與大砬子組時(shí)期皆為扇三角洲～湖泊沉積環(huán)境，砂巖都比較發(fā)育。銅佛寺組砂巖砂巖累計(jì)厚度介于15.2m～516.09m，平均累計(jì)厚度為173.45m，平均累計(jì)厚度為190m；大砬子組砂巖分布范圍與厚度都較銅佛寺組大，大砬子組砂巖累計(jì)厚度介于79.5m～552.57m，平均累計(jì)厚度為295.76m。儲(chǔ)層物性上，銅佛寺組為孔隙度平均值在8.0%左右，為特低孔、特低滲儲(chǔ)層；大砬子組孔隙度在平均值11.5%左右，為低孔、低滲儲(chǔ)層。在含油氣情況上，盆地中現(xiàn)已發(fā)現(xiàn)油氣流主要賦存在銅佛寺組儲(chǔ)層中，，故銅佛寺組儲(chǔ)層為現(xiàn)階段勘探重點(diǎn)。 根據(jù)銅佛寺組與大砬子組不同石油地質(zhì)條件，對(duì)銅佛寺組圈閉從圈閉條件、烴源巖條件、儲(chǔ)層條件，保存條件中優(yōu)選出14項(xiàng)中參數(shù)，利用層次分析法確定各項(xiàng)參數(shù)權(quán)重；對(duì)大砬子組圈閉優(yōu)選9項(xiàng)參數(shù)，利用相對(duì)比較法確定各項(xiàng)參數(shù)權(quán)重。從而使每項(xiàng)圈閉評(píng)價(jià)參數(shù)獲得較為合理的權(quán)重值。 針對(duì)本區(qū)實(shí)際情況，對(duì)優(yōu)選出來(lái)的特征參數(shù)大小進(jìn)行分級(jí)，給出合理的分值，進(jìn)而對(duì)銅佛寺組與大砬子組圈閉進(jìn)行綜合評(píng)價(jià)。根據(jù)評(píng)價(jià)結(jié)果，銅佛寺組構(gòu)造圈閉中有2個(gè)I類(lèi)圈閉，5個(gè)II類(lèi)圈閉，11個(gè)III類(lèi)圈閉；大砬子組中有2個(gè)I類(lèi)圈閉，9個(gè)II類(lèi)圈閉，7個(gè)III類(lèi)圈閉。延吉盆地勘探開(kāi)發(fā)的I類(lèi)有利區(qū)主要位于在盆地東部坳陷帶東南部的德新凹陷的延4～延9井區(qū)、盆地東部坳陷帶東北部的清茶館凹陷延10～延12井區(qū)；延吉盆地勘探開(kāi)發(fā)的II較有利區(qū)主要位于盆地中部朝陽(yáng)川凹陷延參1～延1井區(qū)以及太平隆起帶上；延吉盆地勘探開(kāi)發(fā)III類(lèi)遠(yuǎn)景區(qū)主要位于朝陽(yáng)川凹陷延3～延D3井區(qū)以及分散分布在盆緣各處。
[Abstract]:The Yanji basin is a small MESOZOIC RESIDUAL fault basin located in the Korean Autonomous Prefecture of Yanbian, Jilin province. From west to East, it shows the western slope, central depression, Taiping uplift and the eastern depression of the two depression and one uplift structure, the north and the south are 50km and the East and the West are 40km. The total area reaches the Cretaceous strata in the 1670km2. basin, the bronze Buddha is mainly developed. The formation of the Temple group and the Dali group is widely distributed in the basin, and the sandstone and dark mudstone are developed hundreds of meters thick. It is the main oil and gas exploration target layer in the basin. The trap is the place of oil and gas accumulation. This study is based on the identification of the traps. Under the guidance of the petroleum geology theory, the typical trap evaluation parameters are selected and the analytic hierarchy process is used. Comprehensive evaluation of traps is made by the method and so on, and favorable traps are selected. This is of important reference for finding new oil and gas reservoirs.
Based on the analysis of multi mouth core, logging and seismic data, guided by sequence stratigraphy, by interpreting seismic profiles in the basin, the tectonic framework of the basin is established and various types of structural traps are identified. Among them, 18 tectonic traps are identified in the cupric Temple group, with the fault block and the fault nose as the main area, with the area of 0.5km2 to 21.35km2 and the closed range of 100m to 750m The 18 structural traps are identified in the great Lazi formation, which are also mainly fault blocks and broken noses, with an area ranging from 0.26km2 to 39.3km2, with a close range of 50 to 350m..
The data of organic geochemistry test and analysis show that the dark mudstone of the copper Buddha Temple group is the main source rock of the basin. The effective source rocks of the effective source rocks are mainly distributed in Chaoyang Sichuan sag, and in the three depression of the Qing tea house depression and Dexin depression, the average accumulative thickness is about 200m and the distribution area is more than 400 square kilometers. Source potential. The organic matter abundance of source rocks is high, the distribution range of organic carbon is 0.26% to 5.95%, the average value is 2.18%, the type of organic matter is type II mainly, the source rock in Chaoyang Sichuan sag and Qing tea house sag is in the stage of low mature to mature, and the source rocks in Dexin sag are in the low mature stage.
The period of the copper Buddha Temple group and the great La formation are both fan delta and lake sedimentary environment, and sandstone is more developed. The cumulative thickness of sandstone sandstone in the copper Buddha Temple group is between 15.2m to 516.09m, the average accumulative thickness is 173.45m, the average accumulative thickness is 190m, and the distribution range and thickness of the sandstones are larger than that of the copper Buddha Temple group, and the sandstones of the great La formation are thicker. In the range of 79.5m ~ 552.57m and the average accumulative thickness of 295.76m. reservoir, the average porosity of the copper Buddha Temple group is about 8%, which is a special low porosity and ultra low permeability reservoir, and the porosity of the big La formation is about 11.5%, the low porosity and low permeability reservoir. In the case of oil and gas, the oil and gas flow in the basin has now been found mainly in the copper Buddha Temple Reservoir. In the layer, the reservoir of the copper Buddha group is the focus of exploration at this stage.
According to the different petroleum geological conditions of the cupric Temple group and the great Lai Zi formation, 14 parameters are selected from the trap condition, the source rock condition, the reservoir condition and the preservation condition, and the weight of each parameter is determined by the analytic hierarchy process. The weight of each parameter is selected and the weight of each parameter is determined by the relative comparison method, and the relative comparison method is used to determine the weight of the parameters. Thus, a reasonable weight value can be obtained by closing the evaluation parameters of each collar.
According to the actual situation in this area, the size of the selected characteristic parameters is classified, and the reasonable score is given. Then the copper Buddha Temple group and the great La group trap are synthetically evaluated. According to the evaluation results, there are 2 I trap, 5 II type trap, 11 III trap, 2 I trap and 9 II class in the big La group. Trap, 7 III traps. The I favorable areas for exploration and development in the Yanji basin are mainly located in the 4 ~ 9 well area in Dexin depression in the southeastern part of the eastern depression of the basin, the 10 ~ 12 well area of the Qing tea house sag in the northeast of the basin in the East of the basin, and the more favorable areas for the exploration and development of the Yanji basin in the central Chaoyang depression in the middle of the basin. In the 1 - Yan 1 well area and the Taiping uplift zone, the exploration and development of the Yanji basin in the Yanji basin is mainly located in the extended 3 ~ D3 well area in Chaoyang Sichuan depression and the scattered distribution in the basin margin.

【學(xué)位授予單位】：吉林大學(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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