本文選題：留楚地區(qū)　切入點(diǎn)：輸導(dǎo)通道　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：為了研究冀中坳陷留楚地區(qū)東二、三段油氣輸導(dǎo)通道及其控藏作用,在幾何學(xué)研究的基礎(chǔ)上,運(yùn)用斷裂生長指數(shù)法結(jié)合斷裂穿層性分析法、構(gòu)造平衡剖面法厘定斷裂的活動(dòng)期次,分析斷裂的形成演化史,對(duì)斷裂系統(tǒng)進(jìn)行劃分,結(jié)合油氣成藏關(guān)鍵時(shí)期,厘定油源斷裂。依據(jù)斷面埋深等值線法與三維地質(zhì)建模方法相結(jié)合的方法識(shí)別油源斷裂優(yōu)勢(shì)輸導(dǎo)通道,結(jié)合烴源巖供烴能力分析,對(duì)油源斷裂優(yōu)勢(shì)輸導(dǎo)通道進(jìn)行級(jí)別劃分。通過統(tǒng)計(jì)不同構(gòu)造斷接厚度與各層油氣分布關(guān)系、含油氣層位與各層平均砂地比之間關(guān)系,確定泥巖蓋層斷接厚度下限與側(cè)向分流平均砂地比下限,從而確定油氣側(cè)向分流層位。運(yùn)用充注點(diǎn)刻畫的方法,確定各層油氣充注部位。通過油源斷裂側(cè)向充注點(diǎn),不同區(qū)域構(gòu)造脊及河道砂體的展布3個(gè)因素相結(jié)合的方法,刻畫各層油氣側(cè)向運(yùn)移路徑。根據(jù)試油、測(cè)井、錄井?dāng)?shù)據(jù)及典型油藏的精細(xì)解剖,分析各構(gòu)造單元油氣藏類型及油水分布特征,綜合上面研究,確定油氣輸導(dǎo)通道對(duì)油氣成藏與分布的控制作用。在研究過程中主要取得了以下幾方面認(rèn)識(shí):(1)根據(jù)對(duì)留楚地區(qū)斷裂垂向優(yōu)勢(shì)輸導(dǎo)通道能力特征的研究,將油源斷裂斷面脊劃分為3類:溝通高效烴源巖的斷面脊(I類)、溝通有效烴源巖的斷面脊(II類)和溝通低效-無效烴源巖的斷面脊(III類)。(2)留楚地區(qū)東一、二段泥巖蓋層斷接厚度下限為272m,油氣側(cè)向分流的平均砂地比下限為0.2,其大部分地區(qū)為泥巖蓋層封閉油氣區(qū),只在中部及南部部分地區(qū)油氣能上調(diào)運(yùn)移至東一段、館陶組中。東二、三段各個(gè)層段砂地比值高于側(cè)向分流界限,是油氣主要的分流運(yùn)移層位。(3)留楚地區(qū)油氣輸導(dǎo)通道對(duì)油氣成藏與分布的控制作用主要有三點(diǎn):油源斷裂優(yōu)勢(shì)輸導(dǎo)通道位置、個(gè)數(shù)控制供烴部位和數(shù)量;側(cè)向分流層位控制油氣運(yùn)聚層位;側(cè)向運(yùn)移路徑控制油氣運(yùn)聚分布區(qū)。
[Abstract]:In order to study the oil and gas migration channels and their reservoir control in the second and third sections of the East second and third member of Liuchu area in the Jizhong Depression, the fracture growth index method combined with the fracture transgressive analysis method is used on the basis of geometric study. The tectonic equilibrium section method determines the active stages of faults, analyzes the evolution history of the faults, divides the fault system, and combines the key period of hydrocarbon accumulation. Oil source faults are determined. The dominant channel of oil source faults is identified according to the combination of section depth isoline method and 3D geological modeling method, and the hydrocarbon supplying ability of source rock is analyzed. The dominant channel of oil-source fault is classified. The relationship between oil and gas distribution and the relationship between oil-bearing gas layer and the average sand to ground ratio of each layer are analyzed by statistical analysis of different structural fracture thickness and distribution of oil and gas. The lower limit of fault thickness of mudstone caprock and the lower limit of average sand to ground ratio of lateral distributary are determined to determine the position of lateral distribution of oil and gas. By using the method of injection point description, the location of oil and gas filling in each layer is determined, and the lateral filling point of oil source fault is obtained. The lateral migration paths of oil and gas in different zones are described by combining the three factors of distribution of structural ridges and channel sandbodies in different regions. According to the oil testing, well logging, logging data and fine anatomy of typical reservoirs, the oil and gas lateral migration paths of each layer are described. The oil and gas reservoir types and oil-water distribution characteristics of each structural unit are analyzed. In the course of the study, the following several aspects have been obtained: 1) based on the study of the characteristics of vertical dominant migration channels of faults in Liuchu area, the control effect of oil and gas migration channels on the formation and distribution of oil and gas reservoirs has been determined. The fault section ridges of oil-source faults are divided into three types: the cross-section ridges of high-efficiency source rocks, the cross-section ridges of effective source rocks, and the cross-section ridges of low-efficient and ineffective source rocks, which are classified into three types: type I of cross-section ridges communicating high-efficiency source rocks, type II of cross-section ridges of effective source rocks, and type III ridges of low-efficient and ineffective source rocks. The lower limit of fault thickness of mudstone caprock is 272 m, and the lower limit of average sand to ground ratio of lateral distribution of oil and gas is 0.2. Most of the area is mudstone capping oil and gas area, only in the central and southern parts of the area oil and gas can be transferred up to the eastern section. In Guantao formation, the ratio of sand to soil in each formation of the second and third formations of Guantao formation is higher than that of the lateral distributary boundary. There are three main controlling effects of oil and gas migration channel on hydrocarbon accumulation and distribution in Liuchu area: the location of dominant migration channel of oil source fault, the number of hydrocarbon supplying position and quantity; The lateral distributary layer controls the oil and gas migration and accumulation horizon, and the lateral migration path controls the hydrocarbon migration and accumulation distribution area.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P618.13

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