靖邊采油廠青陽岔油區(qū)基礎(chǔ)地質(zhì)研究
發(fā)布時間：2018-10-22 20:08
【摘要】：本文運(yùn)用石油地質(zhì)學(xué)、沉積巖石學(xué)、構(gòu)造地質(zhì)學(xué)等相關(guān)學(xué)科的理論和研究方法,利用測井資料進(jìn)行地層精細(xì)劃分對比,對構(gòu)造特征、沉積相及砂體展布、儲層特征、油藏特征進(jìn)行系統(tǒng)研究。靖邊油田青陽岔油區(qū),以長2油藏為儲產(chǎn)主力,砂巖儲層極為發(fā)育,屬于三角洲平原亞相沉積。儲層巖性以淺灰、灰綠色細(xì)粒、細(xì)-中粒及中粒長石砂巖為主�？紫额愋鸵粤ｉg溶孔及殘余粒間孔為主。平均孔隙度為15.85%;平均滲透率為24.63×10-3μm2,屬于中孔低滲儲層,部分為中滲透型及特低滲透型;巖石潤濕性為親水型。區(qū)域內(nèi)長1油層組以泥質(zhì)粉砂巖、粉砂質(zhì)泥巖、暗色泥巖等互層組合,構(gòu)成了穩(wěn)定分布的良好的蓋層。長2油藏頂面構(gòu)造面貌總體為一個在西傾單斜背景上發(fā)育的較大型的低幅度的鼻褶復(fù)合構(gòu)造帶,構(gòu)造頂部比較開闊平緩,其上自西向東發(fā)育有三排低幅度鼻褶構(gòu)造帶,間夾兩個平行延伸的低洼構(gòu)造。構(gòu)造帶軸向接近北東-南西方向。與沉積相帶展布方向大體一致。長2油層組主要微相類型為河道砂壩與河漫灘、河間洼地。主要物源為東北方向,各層位砂體的平面分布特征嚴(yán)格受物源方向與沉積相帶空間展布規(guī)律的控制,總體呈北東-南西向展布。長2砂巖儲層頂面的構(gòu)造起伏對油層的發(fā)育分布控制作用十分明顯,海拔高的部位往往含油較好,油井產(chǎn)量也較高,海拔較低的部位,往往含水較高。長2油層在縱向剖面上具有較好的油水分異,油水界面比較清晰和明顯,油田內(nèi)基本具備統(tǒng)一的油水界面,整體呈現(xiàn)北高南低,東高西低的特點(diǎn)。結(jié)合構(gòu)造特征、沉積相、砂體展布、儲層特征、油藏特征等多方面的研究,為青陽岔油區(qū)下一步開發(fā)提供有力依據(jù)。
[Abstract]:In this paper, using the theories and research methods of petroleum geology, sedimentary petrology, tectonic geology and other related disciplines, the stratigraphic fine division and correlation are carried out by using logging data, and the structural characteristics, sedimentary facies and sandbody distribution, reservoir characteristics, etc. The reservoir characteristics are systematically studied. In Qingyangcha area of Jingbian Oilfield, Chang 2 reservoir is the main reservoir and sandstone reservoir is very developed, which belongs to delta plain subfacies. The reservoir lithology is light gray, gray-green fine grain, fine-medium grain and medium grain feldspar sandstone. The main pore types are intergranular dissolved pores and residual intergranular pores. The average porosity is 15.85 and the average permeability is 24.63 脳 10 ~ (-3) 渭 m ~ (2), which belongs to the medium-porosity and low-permeability reservoirs, and the wettability of the rocks is hydrophilic. The Chang 1 oil formation in the region is composed of shaly siltstone silty mudstone dark mudstone and other interbedded layers which form a stable distribution of good caprock. The structural features of the top surface of Chang2 reservoir are generally a relatively large low amplitude rhinopleat complex belt developed in the westward inclined monoclinal background. The top of the structure is relatively open and gentle, and there are three rows of low amplitude nasal fold structural belts developed from west to east. Between two parallel extension of low-lying structures. The axial direction of the tectonic belt is close to the NE-NW direction. It is consistent with the distribution direction of sedimentary facies belt. The main microfacies types of Chang 2 oil formation are river bar, flood bank and interriver depression. The main material source is the northeast direction. The plane distribution characteristics of each layer sand body are strictly controlled by the source direction and the spatial distribution law of sedimentary facies belt. The structural fluctuation of the top surface of Chang 2 sandstone reservoir controls the development and distribution of the reservoir obviously. The parts with high altitude tend to have better oil content, the oil well production is also higher, and the parts with lower altitude tend to have higher water content. Chang2 reservoir has better oil-water differentiation in vertical profile, the oil-water interface is clear and obvious, and the oil-water interface in the oil field is basically unified, which is characterized by the north high and the south low, the east high and the west low. Combined with the structural characteristics, sedimentary facies, sand distribution, reservoir characteristics, reservoir characteristics and other aspects of the study, for the Qingyangcha oil development in the next step to provide a strong basis.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13
本文編號：2288180
[Abstract]:In this paper, using the theories and research methods of petroleum geology, sedimentary petrology, tectonic geology and other related disciplines, the stratigraphic fine division and correlation are carried out by using logging data, and the structural characteristics, sedimentary facies and sandbody distribution, reservoir characteristics, etc. The reservoir characteristics are systematically studied. In Qingyangcha area of Jingbian Oilfield, Chang 2 reservoir is the main reservoir and sandstone reservoir is very developed, which belongs to delta plain subfacies. The reservoir lithology is light gray, gray-green fine grain, fine-medium grain and medium grain feldspar sandstone. The main pore types are intergranular dissolved pores and residual intergranular pores. The average porosity is 15.85 and the average permeability is 24.63 脳 10 ~ (-3) 渭 m ~ (2), which belongs to the medium-porosity and low-permeability reservoirs, and the wettability of the rocks is hydrophilic. The Chang 1 oil formation in the region is composed of shaly siltstone silty mudstone dark mudstone and other interbedded layers which form a stable distribution of good caprock. The structural features of the top surface of Chang2 reservoir are generally a relatively large low amplitude rhinopleat complex belt developed in the westward inclined monoclinal background. The top of the structure is relatively open and gentle, and there are three rows of low amplitude nasal fold structural belts developed from west to east. Between two parallel extension of low-lying structures. The axial direction of the tectonic belt is close to the NE-NW direction. It is consistent with the distribution direction of sedimentary facies belt. The main microfacies types of Chang 2 oil formation are river bar, flood bank and interriver depression. The main material source is the northeast direction. The plane distribution characteristics of each layer sand body are strictly controlled by the source direction and the spatial distribution law of sedimentary facies belt. The structural fluctuation of the top surface of Chang 2 sandstone reservoir controls the development and distribution of the reservoir obviously. The parts with high altitude tend to have better oil content, the oil well production is also higher, and the parts with lower altitude tend to have higher water content. Chang2 reservoir has better oil-water differentiation in vertical profile, the oil-water interface is clear and obvious, and the oil-water interface in the oil field is basically unified, which is characterized by the north high and the south low, the east high and the west low. Combined with the structural characteristics, sedimentary facies, sand distribution, reservoir characteristics, reservoir characteristics and other aspects of the study, for the Qingyangcha oil development in the next step to provide a strong basis.
【學(xué)位授予單位】：西安石油大學(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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