塔里木盆地新和地區(qū)中生界地震烴類(lèi)檢測(cè)及有利圈閉預(yù)測(cè)
發(fā)布時(shí)間：2018-08-09 11:00
【摘要】：新和地區(qū)位于新疆塔里木盆地北部的天山南地區(qū),構(gòu)造上處于庫(kù)車(chē)坳陷與沙雅隆起兩大構(gòu)造單元的結(jié)合區(qū)域,是斷裂發(fā)育和油氣聚集的重點(diǎn)區(qū)帶。然而中國(guó)石化前期在新和地區(qū)針對(duì)大型構(gòu)造圈閉的勘探結(jié)果不佳,使得在該地區(qū)應(yīng)用地震烴類(lèi)檢測(cè)技術(shù)開(kāi)展隱蔽圈閉預(yù)測(cè)就顯得尤為必要。本次論文在前人研究的基礎(chǔ)上,從構(gòu)造及沉積相分析出發(fā),利用地震烴類(lèi)檢測(cè)技術(shù)預(yù)測(cè)了新和地區(qū)中生界目的層位的能量衰減異常區(qū),并從石油地質(zhì)條件聚焦分析了異常區(qū)油氣成藏的可能性。當(dāng)?shù)貙雍袩N類(lèi)尤其是含氣時(shí),會(huì)導(dǎo)致地層的吸收衰減系數(shù)變大,地震波通過(guò)時(shí),會(huì)表現(xiàn)出“低頻共振,高頻衰減”的特征。通過(guò)離散傅里葉變換將時(shí)間域的新和三維地震數(shù)據(jù)體分為頻率域間隔5Hz的離散能量數(shù)據(jù)體,以開(kāi)展針對(duì)中生界目的層位的烴類(lèi)檢測(cè)。新和地區(qū)庫(kù)車(chē)坳陷內(nèi)的三疊系目的層位哈拉哈塘組存在含油氣有利區(qū),其油氣主要來(lái)自庫(kù)車(chē)坳陷內(nèi)部三疊系的陸相烴源巖,由坳陷內(nèi)部運(yùn)移至構(gòu)造斜坡帶,并在哈拉哈塘組頂部的泥巖蓋層封堵和高部位斷裂遮擋的作用下,使得油氣賦存于三疊系哈拉哈塘組的砂巖儲(chǔ)層中,存在形成受斷裂、構(gòu)造和巖性共同控制的復(fù)合圈閉油氣藏的可能。新和地區(qū)白堊系的目的層位巴西蓋組與舒善河組上段存在含油氣有利區(qū),其油氣主要來(lái)自寒武系至奧陶系的主力烴源巖,并在淺層的白堊系走滑拉分扭張斷裂體系作用下,沿?cái)嗔淹ǖ阑虿徽厦孢\(yùn)移至淺層的巴西蓋組和舒善河組有效儲(chǔ)層,并在上覆巴西蓋組頂部泥巖封堵及構(gòu)造高部位斷裂遮擋的作用下,存在形成受斷裂、構(gòu)造和巖性共同控制的復(fù)合圈閉油氣藏的可能。本次論文研究所應(yīng)用的地震烴類(lèi)檢測(cè)技術(shù)在新和地區(qū)的可適用性驗(yàn)證及其預(yù)測(cè)結(jié)果對(duì)在塔里木盆地北部的新和地區(qū)乃至整個(gè)天山南地區(qū)尋找隱蔽圈閉油氣藏具有重要的指導(dǎo)意義。
[Abstract]:Xinhe area is located in Tianshannan area in northern Tarim Basin, Xinjiang. It is located in the combination area of Kuqa depression and Shaya uplift, and is the key zone of fault development and oil and gas accumulation. However, in the early stage of Sinopec, the exploration results of large-scale structural traps in Xinhe area are not good, so it is necessary to use seismic hydrocarbon detection technology to predict subtle traps in this area. On the basis of previous studies, based on the structural and sedimentary facies analysis, the energy attenuation anomaly area of the Mesozoic target horizon in the Neo-Hehe area is predicted by using seismic hydrocarbon detection technique. The possibility of oil and gas accumulation in anomalous areas is analyzed from petroleum geological conditions. When the layer contains hydrocarbon, especially gas, the absorption and attenuation coefficient of the formation will become larger. When the seismic wave passes through, it will show the characteristic of "low frequency resonance and high frequency attenuation". The new and three-dimensional seismic data volumes in time domain are divided into discrete energy data volumes of 5Hz in frequency domain by discrete Fourier transform to detect hydrocarbons for Mesozoic target horizon. There is a favorable oil-gas bearing area in the Triassic target horizon of Ha-Hattang formation in Xinhe area, which mainly comes from the continental source rocks of Triassic in Kuqa depression, and migrates from the internal depression to the structural slope zone, and the oil and gas mainly come from the continental source rocks of the Triassic in the Kuqa Depression. Under the action of mudstone caprock plugging at the top of the Hafatang formation and fault occlusion at the high position, the oil and gas exists in the sandstone reservoir of the Triassic Hala Hattang formation, and the formed fault exists. The possibility of complex traps controlled by structure and lithology. The target strata of the Cretaceous in the Xinhe area are the Brazilian cap formation and the upper part of the Shushanhe formation, which are favorable for oil and gas, mainly from the main source rocks from Cambrian to Ordovician, and under the action of the shallow Cretaceous strike-slip extensional and tensional fault system. Along the fault channel or unconformable surface, the effective reservoirs of the Brazilian cap formation and the Shushanhe formation are migrated to the shallow layer, and under the action of sealing the mudstone at the top of the overlying Brazil cap formation and blocking the faults at the high part of the structure, there are formed faults. The possibility of complex traps controlled by structure and lithology. The applicability of seismic hydrocarbon detection technology applied in this paper in Xinhe area and its prediction results are useful for finding subtle traps in the northern part of Tarim Basin and even in the whole Tianshannan area. Important guiding significance.
【學(xué)位授予單位】：西北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：P618.13
，
本文編號(hào)：2173866
[Abstract]:Xinhe area is located in Tianshannan area in northern Tarim Basin, Xinjiang. It is located in the combination area of Kuqa depression and Shaya uplift, and is the key zone of fault development and oil and gas accumulation. However, in the early stage of Sinopec, the exploration results of large-scale structural traps in Xinhe area are not good, so it is necessary to use seismic hydrocarbon detection technology to predict subtle traps in this area. On the basis of previous studies, based on the structural and sedimentary facies analysis, the energy attenuation anomaly area of the Mesozoic target horizon in the Neo-Hehe area is predicted by using seismic hydrocarbon detection technique. The possibility of oil and gas accumulation in anomalous areas is analyzed from petroleum geological conditions. When the layer contains hydrocarbon, especially gas, the absorption and attenuation coefficient of the formation will become larger. When the seismic wave passes through, it will show the characteristic of "low frequency resonance and high frequency attenuation". The new and three-dimensional seismic data volumes in time domain are divided into discrete energy data volumes of 5Hz in frequency domain by discrete Fourier transform to detect hydrocarbons for Mesozoic target horizon. There is a favorable oil-gas bearing area in the Triassic target horizon of Ha-Hattang formation in Xinhe area, which mainly comes from the continental source rocks of Triassic in Kuqa depression, and migrates from the internal depression to the structural slope zone, and the oil and gas mainly come from the continental source rocks of the Triassic in the Kuqa Depression. Under the action of mudstone caprock plugging at the top of the Hafatang formation and fault occlusion at the high position, the oil and gas exists in the sandstone reservoir of the Triassic Hala Hattang formation, and the formed fault exists. The possibility of complex traps controlled by structure and lithology. The target strata of the Cretaceous in the Xinhe area are the Brazilian cap formation and the upper part of the Shushanhe formation, which are favorable for oil and gas, mainly from the main source rocks from Cambrian to Ordovician, and under the action of the shallow Cretaceous strike-slip extensional and tensional fault system. Along the fault channel or unconformable surface, the effective reservoirs of the Brazilian cap formation and the Shushanhe formation are migrated to the shallow layer, and under the action of sealing the mudstone at the top of the overlying Brazil cap formation and blocking the faults at the high part of the structure, there are formed faults. The possibility of complex traps controlled by structure and lithology. The applicability of seismic hydrocarbon detection technology applied in this paper in Xinhe area and its prediction results are useful for finding subtle traps in the northern part of Tarim Basin and even in the whole Tianshannan area. Important guiding significance.
【學(xué)位授予單位】：西北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：P618.13
，
本文編號(hào)：2173866
本文鏈接：http://sikaile.net/kejilunwen/diqiudizhi/2173866.html
最近更新
教材專(zhuān)著
