本文選題：溱潼凹陷 + 地層油氣藏�。� 參考：《中國石油大學(xué)(華東)》2015年碩士論文

【摘要】：蘇北盆地溱潼凹陷是一個(gè)勘探程度相對較高的盆地,過去主要是針對構(gòu)造圈閉進(jìn)行勘探。隨著油氣勘探程度不斷深入,構(gòu)造類型圈閉識別難度越來越大,巖性地層油氣藏勘探成為當(dāng)前勘探開發(fā)工作的熱點(diǎn)[1]。地層油氣藏勘探在溱潼凹陷剛剛起步,為了更好地開展該類油氣藏的勘探,需要形成一套適合于蘇北盆地復(fù)雜小斷塊地區(qū)地震資料解釋技術(shù)。本文通過研究近幾年地層油氣藏勘探地震解釋工作成果,初步總結(jié)了一套適用于蘇北盆地溱潼凹陷戴南組地層油氣藏勘探的地震解釋技術(shù)。對于適用于構(gòu)造解釋的地震資料,在解釋性處理中通過感興趣有效頻率識別、拓頻、譜平衡等技術(shù)的應(yīng)用,突出感興趣頻帶的振幅譜,可以提高數(shù)據(jù)的分辨率,有效地改善資料質(zhì)量。在地層圈閉精細(xì)描述中通過相干分析、瞬時(shí)相位及頻譜分解等技術(shù)的應(yīng)用有利于地層超剝線的識別。針對地震同相軸識別的尖滅點(diǎn)與實(shí)際地層超剝尖滅點(diǎn)之間的誤差,通過建立夾角外推量板,可以更加準(zhǔn)確識別實(shí)際地層超剝尖滅位置。地震反演工作前通過測井曲線歸一化、標(biāo)準(zhǔn)化等預(yù)處理和利用擬合聲波有利于提高地震反演精度,同時(shí),明確了在井資料比較豐富的地區(qū),利用基于地質(zhì)統(tǒng)計(jì)學(xué)的隨機(jī)反演有利于提高砂體預(yù)測的精度。通過地震屬性的分析,識別了戴一段地層油氣藏勘探中對儲集層的敏感度相對較高的地震屬性,確定了利用“亮點(diǎn)”技術(shù)和高頻衰減梯度屬性可以進(jìn)行含油氣性檢測。通過多種地震解釋技術(shù)的運(yùn)用,在蘇北盆地溱潼凹陷戴一段地層油氣藏勘探中取得了較好的油氣勘探成果。在溱潼西部斜坡陳家舍、帥北和白馬地區(qū)實(shí)現(xiàn)了戴南組超覆尖滅帶類型的油藏突破,新落實(shí)含油面積2.16km~2,落實(shí)優(yōu)質(zhì)商業(yè)儲量235×10~4t,累建產(chǎn)能3.9×10~4t。
[Abstract]:Qintong sag in Subei basin is a basin with relatively high exploration degree, which was mainly aimed at structural traps in the past. With the deepening of oil and gas exploration, it is more and more difficult to identify the traps of structural types, and the exploration of lithostratigraphic oil and gas reservoirs has become a hot spot in the current exploration and development work [1]. Reservoir exploration in Qintong sag is just beginning. In order to better carry out the exploration of this kind of oil and gas reservoirs, a set of seismic data interpretation techniques suitable for complex small fault blocks in Subei Basin should be formed. Based on the study of seismic interpretation of stratigraphic oil and gas reservoir exploration in recent years, a set of seismic interpretation techniques suitable for exploration of formation oil and gas reservoirs in Qintong sag of Qintong depression in northern Jiangsu Basin are preliminarily summarized in this paper. For seismic data suitable for structural interpretation, the amplitude spectrum of the band of interest can be highlighted by the application of the techniques of effective frequency identification, frequency extension and spectral balance in the interpretation processing, which can improve the resolution of the data. Effectively improve the quality of data. The application of coherent analysis, instantaneous phase and spectrum decomposition in the fine description of stratigraphic traps is beneficial to the recognition of strata overstripping lines. In view of the error between the pinning-out point identified by the cophase axis of the earthquake and the overstripping extinguishing point of the actual stratum, the location of the overpeeling and extinguishing of the actual stratum can be more accurately identified by establishing the angle extrapolation plate. Before seismic inversion work, preprocessing and using fitting sound wave, such as normalization of logging curve, standardization and so on, are helpful to improve the precision of seismic inversion. At the same time, it is clear that the area with abundant well data is clear. Stochastic inversion based on geostatistics is helpful to improve the accuracy of sand body prediction. Based on the analysis of seismic attributes, the seismic attributes with relatively high sensitivity to reservoir in the exploration of formation oil and gas reservoirs in Dayi formation are identified, and the oil-bearing gas properties can be detected by using "bright spot" technique and high-frequency attenuation gradient attribute. Through the application of many seismic interpretation techniques, good oil and gas exploration results have been obtained in the exploration of formation reservoirs in Qintong Sag, Qintong Sag, North Jiangsu Basin. In Chenjiashe, Shuaibei and Baima area of Qintong western slope, the reservoir breakthrough of the type of overlying tip-out zone in Dainan formation has been realized, the oil area of 2.16kmm2 has been newly implemented, the commercial reserves of high quality have been realized 235 脳 10104t, and the cumulative production capacity 3.9 脳 104t has been realized.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13;P631.4

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