本文選題：鎮(zhèn)原地區(qū) + 沉積體系　； 參考：《西安石油大學(xué)》2015年碩士論文

【摘要】：鎮(zhèn)原油區(qū)位于鄂爾多斯盆地西南部鎮(zhèn)原油區(qū),是多油層復(fù)合的油氣富集區(qū),在延8、延9、延10、長3、長4+5、長8分別獲得工業(yè)油流。從多年勘探開發(fā)情況來看,長3油藏具有資源潛力大、油藏分布零散、出油井點多、單井產(chǎn)量高等特點。但鎮(zhèn)原油區(qū)勘探程度較低,隨著產(chǎn)建規(guī)模的不斷擴(kuò)大,后備資源難以滿足鎮(zhèn)原油田快速發(fā)展的矛盾日益突出。本文針對以上矛盾,重點從古地貌特征、沉積相特征、砂體展布特征、儲層特征、油藏的富集規(guī)律等方面進(jìn)行論證,建立儲層分類標(biāo)準(zhǔn),篩選長3油層組有利建產(chǎn)區(qū)。結(jié)合前人研究的成果,從面臨的問題、研究的主要任務(wù)、構(gòu)造、沉積相和儲層入手,應(yīng)用多學(xué)科理論,在與鄰區(qū)對比的基礎(chǔ)上,結(jié)合現(xiàn)代測試技術(shù)方法,對研究區(qū)沉積相、儲層和成藏主控因素進(jìn)行了系統(tǒng)地研究,進(jìn)一步揭示了鎮(zhèn)原油區(qū)的油氣成藏規(guī)律,建立了油氣成藏模式,確定了進(jìn)一步勘探的優(yōu)選目標(biāo)。研究表明鎮(zhèn)原油區(qū)長3油層組為三角洲沉積體系,發(fā)育三角洲平原亞相,分流河道是最有利的微相,且平面上砂體呈南西-東北向展布;鎮(zhèn)原油區(qū)油氣運移疏導(dǎo)體系為斷裂、裂縫、裂縫-滲透性砂巖和干酪根網(wǎng)絡(luò)組合。此外,油氣以垂向運移為主,油氣成藏具“多元控油,鼻狀構(gòu)造成藏”的運聚模式。通過建立長3油藏分類評價標(biāo)準(zhǔn),優(yōu)選出Ⅰ類有利建產(chǎn)區(qū)3個,優(yōu)選出Ⅱ類有利建產(chǎn)區(qū)7個,優(yōu)選出Ⅲ類有利建產(chǎn)區(qū)1個。
[Abstract]:Zhenyuan oil area is located in the town crude oil area of southwestern Ordos Basin. It is a complex oil and gas accumulation area with multiple oil layers. Industrial oil flows are obtained in Yan8, Y9, Y10, Chang3, Chang 45 and Chang8, respectively. According to the exploration and development for many years, Chang 3 reservoir has the characteristics of large potential, scattered reservoir distribution, many oil well points and high single well production. However, the exploration level in Zhenyuan oil area is low. With the expansion of production and construction scale, the contradiction that reserve resources can not meet the rapid development of Zhenyuan oil field is becoming increasingly prominent. In view of the above contradictions, this paper focuses on the demonstration of paleogeomorphic features, sedimentary facies characteristics, sandbody distribution characteristics, reservoir enrichment rules, and so on, establishes the reservoir classification standard, and screens the Chang 3 reservoir formation to establish favorable production areas. Combining with the achievements of previous studies, starting with the problems, the main task of the study, the structure, sedimentary facies and reservoir, applying the multi-disciplinary theory, on the basis of contrast with the adjacent area, combining with the modern testing technique, the sedimentary facies in the study area are analyzed. The reservoir and the main controlling factors of the reservoir formation are studied systematically, which further reveals the oil and gas accumulation law in the Zhen crude oil area, establishes the oil and gas accumulation model, and determines the optimal selection target for further exploration. The results show that the Chang 3 oil formation in Zhen crude oil area is a delta sedimentary system with delta plain subfacies developed, distributary channel is the most favorable microfacies, and the sand bodies on the plane are distributed in the south west to northeast direction, and the oil and gas migration and dredging system in the Zhenyuan oil area is a fault. Fracture, fracture-permeability sandstone and kerogen network combination. In addition, the migration of oil and gas is mainly vertical, and the accumulation pattern of oil and gas accumulation is "multiple control of oil and formation of nasal structure". By establishing the criteria of classification and evaluation of Chang 3 reservoir, 3 favorable construction areas of class I, 7 favorable areas of construction and 1 favorable production area of class 鈪，

本文編號：2052630