【摘要】：含硫多環(huán)芳烴(二苯并噻吩、苯并萘并噻吩)是石油和沉積有機(jī)質(zhì)中一類重要的含雜原子多環(huán)芳烴化合物。由于其高電負(fù)性和硫原子外環(huán)存在一對(duì)未成鍵的孤對(duì)電子,所以硫原子和疏導(dǎo)介質(zhì)中的氫原子可以形成氫鍵。因此二苯并噻吩類及苯并萘并噻吩參數(shù)可以作為有效的分子示蹤參數(shù)。本論文所研究的哈拉哈塘凹陷位于塔里木盆地塔北隆起中部,勘探前景良好。通過(guò)精細(xì)的剖析該地區(qū)典型原油的地球化學(xué)特征,進(jìn)行油-油對(duì)比的研究,進(jìn)而劃分原油族群,在此基礎(chǔ)上,研究典型油藏的成藏期次與時(shí)間,選定示蹤油藏運(yùn)移的分子參數(shù),示蹤油氣藏的運(yùn)移方向與路徑。并結(jié)合典型油藏的地質(zhì)條件,對(duì)研究區(qū)的油氣運(yùn)移方向、充注途徑和成藏特征進(jìn)行綜合分析。本次論文共采集了哈拉哈塘及周緣地區(qū)共78口井80件奧陶系原油樣品,通過(guò)對(duì)這些原油樣品進(jìn)行的地球化學(xué)分析研究,發(fā)現(xiàn)哈拉哈塘凹陷奧陶系油藏的原油樣品屬于同一原油族群,并與周緣塔河油田樣品具有很好的對(duì)比性。表明該地區(qū)奧陶系原油源自于同一烴源層/灶,并且具有相似的充注/成藏歷史。通過(guò)對(duì)3口典型井的儲(chǔ)層包裹體觀測(cè)和測(cè)溫、結(jié)合一維數(shù)值模擬重建的單井地層埋藏史-熱歷史曲線,確定哈拉哈塘地區(qū)奧陶系油藏存在著兩期成藏,相應(yīng)的成藏時(shí)間為:第一期420~410Ma,相當(dāng)于中—晚志留世;第二期成藏時(shí)間為20~6Ma,相當(dāng)于中新世時(shí)期。利用篩選出的二苯并噻吩類含硫多環(huán)芳烴分子參數(shù)(4-/1-甲基二苯并噻吩,4,6-/(1,4+1,6)-二甲基二苯并噻吩,(2,6+3,6)-/(1,4+1,6)-二甲基二苯并噻吩,2,4,6-/(1,4,6+1,4,8+3,4,6)-三甲基二苯并噻吩,(2,4,7+2,4,8)-/(1,4,6+1,4,8+3,4,6)-三甲基二苯并噻吩及苯并萘并噻吩參數(shù))對(duì)哈拉哈塘及周緣托甫臺(tái)、艾丁及躍進(jìn)區(qū)塊奧陶系油藏進(jìn)行了連片示蹤,結(jié)果表明該區(qū)奧陶系油藏整體由南向北運(yùn)移,推測(cè)出該地區(qū)烴源灶位于哈拉哈塘凹陷南部的滿西低凸起上。并結(jié)合該地區(qū)的油氣運(yùn)移方向、優(yōu)勢(shì)運(yùn)移通道與縫洞發(fā)育情況,原油的產(chǎn)量分布情況之間的關(guān)系,發(fā)現(xiàn)分子地球化學(xué)參數(shù)示蹤得到的優(yōu)勢(shì)運(yùn)移通道均位于縫洞系統(tǒng)上,且優(yōu)勢(shì)運(yùn)移通道上均為油氣產(chǎn)量的高產(chǎn)區(qū)。通過(guò)對(duì)分子地球化學(xué)示蹤參數(shù)結(jié)合地質(zhì)特征、油藏分布特征綜合分析,推斷出哈拉哈塘凹陷南部區(qū)域可能是進(jìn)一步油氣勘探的指向區(qū)。
[Abstract]:Polycyclic aromatic hydrocarbons (PAHs) containing sulfur (dibenzothiophene, benzonaphthalene) are an important class of hetero-atomic polycyclic aromatic hydrocarbons (PAHs) in petroleum and sedimentary organic matter. Because of its high electronegativity and the existence of a pair of unbonded lone electrons in the outer ring of sulfur atoms, the hydrogen atoms of sulfur atoms and hydrophobic media can form hydrogen bonds. Therefore, the parameters of dibenzothiophene and benzonaphthalene can be used as effective molecular tracer parameters. The halahatang sag studied in this paper is located in the middle of Tarim Basin and has a good prospect of exploration. Through the detailed analysis of the geochemical characteristics of typical crude oil in this area and the study of oil-oil correlation, the oil population is further divided. On the basis of this, the time and time of reservoir formation are studied, and the molecular parameters of migration of tracer reservoir are selected. Migration direction and path of tracer reservoirs. Combined with the geological conditions of typical reservoirs, the oil and gas migration direction, filling path and reservoir forming characteristics in the study area are comprehensively analyzed. In this paper, a total of 80 samples of Ordovician crude oil from 78 wells in Hara Hattang and its surrounding areas were collected and studied through geochemical analysis of these crude oil samples. It is found that the crude oil samples of Ordovician reservoirs in Hala Hattang Sag belong to the same crude oil group and have a good comparison with the samples from the surrounding Tahe Oilfield. It is shown that the Ordovician crude oil in this area originated from the same hydrocarbon source bed / stove and has a similar history of filling / reservoir formation. Based on the observation and temperature measurement of reservoir inclusions in three typical wells, combined with one-dimensional numerical simulation reconstruction of single well burial history and thermal history curve, it is determined that there are two periods of reservoir formation in Ordovician reservoir in Hala Hattang area. The corresponding time of reservoir formation is as follows: the first period 420 ~ (10) Ma, equivalent to the Middle and late Silurian; The second stage of reservoir formation is 20 ~ 6 Ma, which is equivalent to the Miocene period. The molecular parameters of dibenzothiophene containing sulfur polycyclic aromatic hydrocarbons (4 / 1-methyldibenzothiophene, 4o 6 / (1o 41N 6) -dimethyl dibenzothiophene, (2n 63N 6)-/ (1n 4 1n 6) -dimethyl dibenzothiophene, 24H, 24N, 24N, 24N) were obtained by using the selected molecular parameters of dibenzothiophene sulfur containing polycyclic aromatic hydrocarbons (4 / 1-methyldibenzothiophene, 4- / (1-) -dimethyldibenzothiophene). The effects of 6 / (1 / (1 / 4) (1 / 4) 4 / (1 / (1 / 4) 4 / (1 / (1 / 4) 4 / 6)-trimethyldibenzothiophene and benzonaphthalenothiophene parameters) on Haradang and its peripheral Tofu platform were studied. The Ordovician reservoirs in Aiding and Yuejin blocks have been followed by successive tracers. The results show that the Ordovician reservoirs in this area are migrated from south to north, and it is inferred that the hydrocarbon source ranges in this area are located on the low uplift of the southern part of the Hala Hattang Sag. Combined with the relationship between the migration direction of oil and gas, the development of dominant migration channels and the development of fracture and cave, and the distribution of crude oil production, it is found that the dominant migration channels obtained by tracing molecular geochemical parameters are located in the system of fractures and cavities. And the high yield area of oil and gas is located on the dominant migration channel. Based on the comprehensive analysis of the molecular geochemical tracer parameters combined with geological characteristics and reservoir distribution characteristics, it is inferred that the southern region of the Hala Hattang depression may be the direction of further oil and gas exploration.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(北京)
【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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本文編號(hào)：2375705