發(fā)布時(shí)間：2018-05-10 23:32

  本文選題：和什托洛蓋盆地 + 布龍果爾凹陷��； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：隨著世界范圍內(nèi)對能源需求量的不斷上漲，常規(guī)油資源已經(jīng)無法滿足需求，而油砂等非常規(guī)油氣則成為填補(bǔ)能源缺口的重要部分。中國具有豐富的油砂資源，但整體勘探程度較低。本文以和什托洛蓋盆地布龍果爾地區(qū)，一直處于勘探空白期的泥盆系油砂為研究對象，結(jié)合野外踏勘及和砂1井鉆井資料所取得的認(rèn)識(shí)，對布龍果爾地區(qū)油砂地質(zhì)特征、成藏條件及模式進(jìn)行了研究。布龍果爾油砂礦作為北疆地區(qū)首個(gè)泥盆系油氣藏，對推動(dòng)研究區(qū)油砂勘探與開發(fā)具有重要意義。 油砂的定義至少有兩種：一種是油和砂的混合物，第二種是特指該種混合物的原油。當(dāng)表示第二種定義的時(shí)候，油砂和瀝青砂為等同的。布龍果爾地區(qū)油砂在野外露頭中主要表現(xiàn)為儲(chǔ)層瀝青及裂縫中充填瀝青脈。通過野外踏勘，結(jié)合鉆井資料，確定泥盆系呼吉爾斯特組碎屑巖層為瀝青（油）砂主要儲(chǔ)層，儲(chǔ)集空間包括原生孔隙、次生孔隙和裂縫孔三種典型孔隙類型。其上部流紋巖為次要儲(chǔ)層，儲(chǔ)集空間類型有溶蝕孔隙和裂縫孔隙。 布龍果爾地區(qū)瀝青（油）砂礦成藏條件：（1）盆地內(nèi)石油地質(zhì)背景有利于瀝青砂礦的形成；（2）儲(chǔ)層中裂縫、孔隙極其發(fā)育且相互配合，形成油氣運(yùn)移優(yōu)勢通道。（3）背斜高部位和圈閉是瀝青砂礦形成的有利場所。 布龍果爾地區(qū)古油藏存在兩期成藏過程，瀝青（油）砂礦為抬升改造型成藏模式。（一）早-中侏羅世，此時(shí)泥盆系呼吉爾斯特組煤和泥質(zhì)烴源巖達(dá)到排烴門限，經(jīng)歷生、排烴過程，并沿著區(qū)域構(gòu)造活動(dòng)下形成的大量裂隙運(yùn)移至背斜高部位砂巖儲(chǔ)集層聚集成藏；（二）早白堊世，在區(qū)域構(gòu)造作用下，布龍果爾凹陷發(fā)育大量逆沖斷層。八道灣組泥質(zhì)烴源巖達(dá)到排烴門限，排烴沿?cái)鄬舆\(yùn)移到頂部圈閉中，形成油氣藏。中-晚侏羅世至白堊世，古油藏不斷抬升，，導(dǎo)致油藏圈閉遭到破壞。直至抬升到地表后，油氣經(jīng)過氧化、水洗、生物降解作用最終變?yōu)楣腆w瀝青充填在儲(chǔ)層及裂縫內(nèi)。
[Abstract]:With the increasing demand for energy in the world, conventional oil resources can not meet the demand, and oil sands and other unconventional oil and gas have become an important part of filling the energy gap. China has abundant oil sand resources, but the overall exploration level is low. In this paper, taking the Devonian oil sand, which has been in the blank stage of exploration, as the research object, and combining the understanding obtained from the field exploration and the drilling data of well No. 1, the geological characteristics of the oil sand in the Bronggoer area are discussed. The conditions and models of reservoir formation were studied. As the first Devonian oil and gas reservoir in northern Xinjiang, the Buronggoer oil placer is of great significance to promote the exploration and development of oil sands in the research area. Oil sands are defined in at least two ways: one is a mixture of oil and sand, and the second is crude oil that specifically refers to that mixture. Oil sands and tar sands are equivalent when the second definition is expressed. Oil sands in Bronggoer area are mainly composed of reservoir asphalt and bituminous veins filled in fractures in field outcrops. Through field exploration and drilling data, the clastic rock of Hujierst formation of Devonian system is determined to be the main reservoir of asphalt (oil) sand. The reservoir space includes three typical pore types: primary pore, secondary pore and fracture pore. The upper rhyolite is a secondary reservoir, and the reservoir space types are corrosion pore and fracture pore. The petroleum geological background in the petroleum geological background of the petroleum geological background in the petroleum basin is conducive to the formation of cracks in the tar sands reservoir, and the pores are extremely developed and cooperate with each other, and the petroleum geological background is favorable to the formation of the asphalt (oil) placer reservoirs in the Brongguor area. The high position and trap of anticline are favorable places for the formation of tar sands. There are two stages of reservoir formation process in the Paleoreservoir of Bronggoer area. The asphalt (oil) placer is uplift and reformed reservoir forming model. (1) in the Early-Middle Jurassic, when the coal and muddy source rocks of the Hujierst formation of the Devonian system reached the hydrocarbon expulsion threshold and experienced the process of generating and expelling hydrocarbon, And a large number of fissures formed along the regional tectonic activity migrated to the sandstone reservoir at the high part of the anticline to form reservoir (2) early Cretaceous. Under the action of regional tectonics, a large number of thrust faults were developed in Bronggoer sag. The muddy source rocks of Badaowan formation reach the threshold of hydrocarbon expulsion, and hydrocarbon expulsion moves along the fault to the top trap to form oil and gas reservoirs. From the middle to late Jurassic to the Cretaceous, the paleoreservoir was uplifted continuously, resulting in the destruction of the reservoir trap. After uplifting to the surface, the oil and gas are oxidized, washed and biodegraded into solid asphalt filling in the reservoir and fracture.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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