本文關(guān)鍵詞： 構(gòu)造 油藏類型 調(diào)驅(qū) 可動(dòng)凝膠 配方篩選 提高采收率　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】：本論文針對(duì)奈1塊井區(qū)存在的地質(zhì)問題,對(duì)該井區(qū)進(jìn)行地質(zhì)特征研究,利用該區(qū)已有的鉆井、錄井、測(cè)井、地震及生產(chǎn)資料,開展構(gòu)造、儲(chǔ)層、沉積、油氣分布規(guī)律等綜合地質(zhì)研究,發(fā)現(xiàn)制約油藏開發(fā)的主要問題。奈1塊是高效水驅(qū)開發(fā)區(qū)塊,目前處于水驅(qū)開發(fā)后期,油藏含水率較高,同時(shí)受到區(qū)塊含油層系多,層間層內(nèi)非均質(zhì)性強(qiáng),原油粘度大等油藏特征影響,油藏開發(fā)矛盾突出,僅靠常規(guī)水驅(qū)采收率難以大幅提高,區(qū)塊穩(wěn)產(chǎn)難度增大,為尋找一種適合于該區(qū)塊油藏特點(diǎn)的提高采收率技術(shù),延緩區(qū)塊產(chǎn)量遞減,緩和油藏開發(fā)矛盾,為油田開發(fā)提供理論指導(dǎo)和方案設(shè)計(jì)。本論文取得的主要認(rèn)識(shí)與成果有:(1)利用較穩(wěn)定的對(duì)比標(biāo)志層,對(duì)工區(qū)主力目的層九佛堂組上、下兩段地層劃分為6個(gè)油層組,14個(gè)砂巖組。(2)本區(qū)斷裂發(fā)育,主要發(fā)育一組北東向正斷層和一組南北向正斷層。北東向斷層和南北向斷層相互切割,早期為油氣的運(yùn)移通道,構(gòu)造成型后,對(duì)油氣有很好的封堵作用。斷裂和構(gòu)造具有長期活動(dòng),繼承性較強(qiáng)的特點(diǎn),各反射層構(gòu)造形態(tài)、斷裂特征基本一致,早期為一半背斜形態(tài),晚期被斷層切割成4個(gè)斷鼻和斷塊構(gòu)造。(3)在綜合沉積背景、沉積相標(biāo)志的基礎(chǔ)上建立該區(qū)塊目的層的扇三角洲沉積模式和微相劃分,以油層組為單元編制沉積相平面圖并進(jìn)行了沉積演化分析。(4)以油層組為單元進(jìn)行了砂體發(fā)育及平面分布特征研究。奈1區(qū)塊九佛堂組上、下兩段油層發(fā)育、厚度大,平面上奈1-60-46塊最好,面積大。依次為奈1-48-38塊、奈1-68-32塊和奈1-42-26塊�？偟奶攸c(diǎn),各斷塊高部位油層厚度大,向低部位逐漸減薄�？v向上九上段Ⅰ、Ⅲ油層組最發(fā)育,其次為Ⅱ油層組,Ⅳ油層組較差,九下段Ⅰ油層組好于Ⅱ油層組�？刂朴退植嫉闹饕蛩厥菢�(gòu)造、沉積相帶等,油藏類型為層狀邊水巖性構(gòu)造油藏。(5)開展區(qū)塊深部調(diào)驅(qū)先導(dǎo)試驗(yàn),在分析奈曼油田特點(diǎn)的基礎(chǔ)上,結(jié)合深部調(diào)剖實(shí)驗(yàn)結(jié)果,確定了該油田深部調(diào)剖體系的類型;推薦體系:0.2%P2000+0.2%JL-5,封堵效率為99.96%,能夠提高采收率14.34%。通過深部調(diào)驅(qū)現(xiàn)場(chǎng)實(shí)施,試驗(yàn)區(qū)見到了明顯的降水效果,表明設(shè)計(jì)的深部調(diào)驅(qū)體系對(duì)奈曼油田深部調(diào)驅(qū)試驗(yàn)區(qū)具有良好的適應(yīng)性。
[Abstract]:In view of the geological problems existing in Nai 1 well area, this paper studies the geological characteristics of this well area, using the existing drilling, logging, logging, seismic and production data to develop structure, reservoir and sedimentation. Comprehensive geological research, such as oil and gas distribution, found that the main problems restricting reservoir development. Block Nai 1 is a high efficiency water drive development block, which is currently in the late stage of water drive development, and the reservoir water cut is relatively high. At the same time, affected by the reservoir characteristics, such as more oil-bearing layers, strong heterogeneity in interlayer, large viscosity of crude oil, the contradiction of reservoir development is prominent, and it is difficult to improve oil recovery by conventional water flooding, and increase the difficulty of stable production in the block. In order to find a kind of oil recovery technology suitable for the reservoir characteristics of the block, delay the decline of production in the block and ease the contradiction of reservoir development. To provide theoretical guidance and scheme design for oil field development. The main knowledge and results obtained in this paper are: 1) using relatively stable contrast marker layer, the main target layer of the work area is Jiu Futang formation. The next two strata are divided into 6 reservoirs and 14 sandstone formations.) faults are developed in this area, mainly a group of NNE normal faults and a group of NNE normal faults. NNE faults and NNE faults cut each other. Early oil and gas migration passage, the formation of the structure has a good plugging effect on oil and gas. Faults and structures have long-term activity, strong inheritance characteristics, the structural morphology of each reflection layer, fracture characteristics are basically the same. It was half anticline in the early stage and was cut into 4 fault nose and fault block structures in the late stage in the integrated sedimentary background. The fan-delta sedimentary model and microfacies division of the target layer of the block are established on the basis of sedimentary facies marks. Taking the reservoir as the unit, the sedimentary facies plane map is compiled and the sedimentary evolution analysis is carried out. 4) the sand body development and plane distribution characteristics are studied with the oil reservoir formation as the unit. In the Jiufutang formation of the Nai 1 block, the sand body development and the plane distribution characteristics are studied. The oil layers of the next two sections are well developed with a large thickness, the best and large area of Nai 1-60-46 on the plane, followed by Nai 1-48-38, Nai 1-68-32 and Nai 1-42-26. The thickness of the oil layer in the high part of each fault block is large and gradually thinning down to the lower part. The formation of 鈪，

本文編號(hào)：1493751