本文選題：黃驊坳陷 + 孔西斷裂帶　； 參考：《成都理工大學(xué)》2017年碩士論文

【摘要】：黃驊坳陷位于渤海灣盆地中部,是一個(gè)在中生代盆地基礎(chǔ)上發(fā)展起來的新生代斷陷盆地,其東西兩側(cè)被埕寧隆起和滄縣隆起所夾持,北端與燕山褶皺帶相接。本文的研究區(qū)孔西斷裂帶位于黃驊坳陷孔店構(gòu)造帶的孔南地區(qū),孔西斷裂帶屬于盆地內(nèi)的一個(gè)三級(jí)構(gòu)造單元。孔西斷裂帶的主體區(qū)形成棗園油田,以往在孔西斷裂帶的勘探過程中主要將孔西斷裂帶的構(gòu)造高部位做為勘探的重點(diǎn)區(qū)帶,隨著勘探開發(fā)程度的增高,發(fā)現(xiàn)此類有利目標(biāo)的難度逐漸加大。近期在孔西斷裂帶構(gòu)造低部位的勘探取得了突破,為該區(qū)勘探工作提供了新的思路。本文以孔西斷裂帶的構(gòu)造特征為切入點(diǎn),分析了孔西斷裂帶的活動(dòng)性及其演化過程,總結(jié)出孔西地塹帶的演化機(jī)制,明確了孔西地塹帶與油氣成藏要素之間的耦合關(guān)系,建立了孔西斷裂帶地塹成藏模式。該模式的提出突破了以往只注重在斷裂帶構(gòu)造高部位尋找油氣的思維定式,因此本文的研究對(duì)于該區(qū)的油氣勘探具有重要的實(shí)踐意義,同時(shí)也對(duì)老油區(qū)高成熟區(qū)塊的進(jìn)一步勘探開發(fā)具有一定的指導(dǎo)意義。本次研究的主要工作及其認(rèn)識(shí)成果如下:1、在孔西斷裂帶沈家鋪地區(qū)厘定出三條地塹帶。地塹帶的演化機(jī)制從大的背景上分析,受新生代太平洋板塊與歐亞板塊的相互作用影響,太平洋板塊俯沖方向的變化,導(dǎo)致該區(qū)受到伸展與走滑應(yīng)力的疊加。從局部構(gòu)造背景分析,地塹帶的演化直接是受該區(qū)風(fēng)化店斷層與孔西斷層的控制,其中孔西斷層起著更主要作用。孔西斷層具有分段活動(dòng)的特點(diǎn),各段的活動(dòng)性具有明顯的差異,導(dǎo)致孔西斷層各斷與其傾向相向的風(fēng)化店斷層在底部相交形成了南、中、北三條地塹,三條地塹的整體形態(tài)相似,走向都為北東-南西向,在平面上成雁列式展布。2、孔西地塹帶的發(fā)育演化與油氣成藏要素之間有著密切關(guān)系。地塹帶的發(fā)育區(qū)位于研究區(qū)的主要生油凹陷(滄東-南皮凹陷)內(nèi),地塹帶底部切入孔二段的生油層,能夠溝通油源。地塹帶的發(fā)育控制著有利砂體的沉積,同一時(shí)期沉積在每條地塹帶內(nèi)的砂體都明顯表現(xiàn)出沉積增厚的特征,并且在平面上整體沿地塹帶分布。地塹帶的發(fā)育過程中,控塹斷裂的活動(dòng)性影響著油氣的運(yùn)移與聚集;在地塹帶的低部位,生油層能夠與儲(chǔ)層形成對(duì)接,由于斷層在低部位活動(dòng)較弱,油氣主要發(fā)生側(cè)向運(yùn)移,形成“旁生側(cè)儲(chǔ)型”油藏;在地塹帶的高部位由于斷層活動(dòng)性強(qiáng),油氣能夠沿?cái)鄬酉蛏线\(yùn)移在高部位構(gòu)造有利處聚集成藏。3、在孔西地塹帶建立了地塹成藏模式。該成藏模式在形式上表現(xiàn)為“滿塹含油、連片分布”的特征,即在地塹帶中油氣在縱向上沿?cái)鄬映啥鄬訕鞘藉e(cuò)位疊置分布,在橫向上的油氣由構(gòu)造低部位到高部位疊合連片分布。地塹成藏模式的主要成藏機(jī)制為:地塹帶內(nèi)的主要生油層系單一、儲(chǔ)層發(fā)育、斷裂控制油氣的運(yùn)聚,在地塹帶的構(gòu)造低部位油源對(duì)接成藏,高部位斷裂運(yùn)移構(gòu)造成藏。
[Abstract]:The Huanghua depression is located in the middle of the Bohai Bay basin. It is a Cenozoic fault basin developed on the basis of Mesozoic basin. Its East and west sides are held by chengning uplift and Cangxian uplift, and the northern end is connected with the Yanshan fold belt. The Kongxi fault zone in the study area is located in the Kongnan area of the Huang Huaao travinedian structural belt and the Kongxi fault zone. A three stage tectonic unit in the basin. Zao Yuan Oilfield is formed in the main area of the hole west fault zone. In the past, during the exploration of the Kong Xi fault zone, the main structure of the hole west fault zone was the key zone of exploration. With the increase of exploration and development, it was found that the difficulty of this kind of goal was gradually increased. The exploration of the low part of the structure has made a breakthrough and provides a new way of thinking for the exploration work in this area. This paper, taking the structural characteristics of the hole west fault zone as the breakthrough point, analyzes the activity and evolution process of the hole west fault zone, summarizes the evolution mechanism of the Kong Xi graben zone, and clarifies the coupling relationship between the hole West graben zone and the oil and gas accumulation factors. In this paper, the study of this model has important practical significance for oil and gas exploration in this area, and also has certain guidance for the further exploration and development of the high maturity block in the old oil area. The main work and achievements of this study are as follows: 1, three graben belts are determined in the shenjiapu area of the Kong West fault zone. The evolution mechanism of the graben zone is analyzed from a large background, influenced by the interaction between the Cenozoic Pacific plate and the Eurasian plate, and the change of the subduction direction of the Pacific plate, which leads to the extension and movement of the region. From the local tectonic background analysis, the evolution of the graben zone is directly controlled by the weathering store fault and the hole west fault in the area, in which the hole west fault plays a more important role. The fault is formed in the south, middle and Northern graben at the bottom of the fault. The overall shape of the three graben is similar, and the trend is North East to South West, and in the plane it is.2. The development and evolution of the hole west of the graben zone are closely related to the oil and gas accumulation factors. The hair zone of the graben zone lies in the main oil depression in the study area (Cangdong Nanpi) In the depression, the two segments of the cut hole in the bottom of the graben can communicate with the oil source. The development of the graben belt controls the deposition of favorable sand bodies. The sand bodies deposited in each graben zone in the same period are obviously characterized by sedimentary thickening and distributed along the graben zone in the plane. In the development of the graben belt, the cutting fracture is controlled. The movement affects the migration and accumulation of oil and gas. In the low part of the graben belt, the oil and gas can form a docking with the reservoir. Because the fault is weak in the low part of the fault, the oil and gas mainly migrate laterally and form the "side side reservoir" reservoir, and the high part of the graben belt is capable of moving upward along the fault because of the strong fault activity. The formation of.3 is formed in the favorable area, and a pattern of graben formation is established in the Guxi graben zone. The reservoir pattern is characterized by the characteristics of "full cut oil bearing, continuous distribution", that is, the oil and gas in the graben belt are vertically stacked and stacked vertically along the fault, and the oil and gas in the transverse direction are overlapped from low to high position. The main formation mechanism of the pattern of the formation of the graben is that the main oil-bearing strata in the graben belt are single, the reservoir is developed, the fracture controls the migration and accumulation of oil and gas, the oil source in the low part of the graben belt is butted into the reservoir, and the high part of the fault is transported to the reservoir.

【學(xué)位授予單位】：成都理工大學(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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