本文選題：鄂爾多斯盆地　切入點(diǎn)：彬長(zhǎng)區(qū)塊　出處：《長(zhǎng)江大學(xué)》2017年碩士論文

【摘要】：鄂爾多斯盆地彬長(zhǎng)區(qū)塊油氣勘查面積3011.8km2,主力含油層系為長(zhǎng)8、長(zhǎng)7、長(zhǎng)6,已打井近百口,二維地震1662.32km,三維地震837.483km2,目前在長(zhǎng)6段、長(zhǎng)7段等組段多口井得到工業(yè)油流,但整體勘探開(kāi)發(fā)水平較低,尚未形成規(guī)模較大的儲(chǔ)量及開(kāi)發(fā)建產(chǎn)區(qū)。彬長(zhǎng)區(qū)塊長(zhǎng)6段和長(zhǎng)7段油層組主要位于湖相三角洲前緣與淺-半深湖相沉積的過(guò)渡地區(qū),雖然砂體發(fā)育面積較廣,但不同期次和不同成因的砂體分布規(guī)律差異較大;長(zhǎng)6段和長(zhǎng)7段油層組儲(chǔ)層多為低孔、低滲、致密的非常規(guī)儲(chǔ)層,受儲(chǔ)層非均質(zhì)性等多因素影響,不同井區(qū)間在儲(chǔ)層物性特征、孔隙特征和測(cè)井電性特征上存在較大差異,尋找低孔特低滲背景下的相對(duì)高滲“甜點(diǎn)”儲(chǔ)層是彬長(zhǎng)區(qū)塊目前面臨的主要問(wèn)題;長(zhǎng)6段和長(zhǎng)7段油層組油水關(guān)系復(fù)雜,油層解釋符合率低,試油成果較差;總的說(shuō)來(lái),彬長(zhǎng)區(qū)塊長(zhǎng)6段和長(zhǎng)7段油層組存在儲(chǔ)層致密,孔喉結(jié)構(gòu)復(fù)雜,裂縫發(fā)育,儲(chǔ)集類型多樣,流體性質(zhì)及分布復(fù)雜,油層類型多樣,產(chǎn)能差別大,低效油層多,油井產(chǎn)能遞減快,穩(wěn)產(chǎn)難度大等問(wèn)題。但總體上彬長(zhǎng)區(qū)塊長(zhǎng)6、長(zhǎng)7油層組砂體發(fā)育,儲(chǔ)層含油性好,油氣資源量大,具有廣闊的勘探開(kāi)發(fā)遠(yuǎn)景,因此開(kāi)展精細(xì)劃分油層組、儲(chǔ)層四性關(guān)系研究、進(jìn)行有效儲(chǔ)層分類、制定儲(chǔ)層的定量評(píng)價(jià)標(biāo)準(zhǔn),并在儲(chǔ)層發(fā)育主要控制因素基礎(chǔ)下,進(jìn)行儲(chǔ)層有利區(qū)域優(yōu)選,為彬長(zhǎng)區(qū)塊低孔、超低滲、低豐度、低產(chǎn)油藏勘探開(kāi)發(fā)提供了技術(shù)支撐,是實(shí)現(xiàn)彬長(zhǎng)區(qū)塊延長(zhǎng)組油層段的進(jìn)一步突破以及快速增儲(chǔ)上產(chǎn)的當(dāng)務(wù)之急。從華北克拉通盆地區(qū)域地質(zhì)背景、區(qū)域構(gòu)造演化、區(qū)塊勘探開(kāi)發(fā)概況及鄰區(qū)的研究成果入手,根據(jù)前人的研究認(rèn)識(shí),本文充分利用彬長(zhǎng)區(qū)塊已有鉆井、測(cè)井、錄井和化驗(yàn)分析等資料,通過(guò)對(duì)厚度變化特征、地層單元沉積旋回及電性特征對(duì)比,對(duì)彬長(zhǎng)區(qū)塊長(zhǎng)6段、長(zhǎng)7段和長(zhǎng)8段地層進(jìn)行地層劃分和對(duì)比,明確層段地層發(fā)育及展布特征,同時(shí)在全區(qū)開(kāi)展延長(zhǎng)組地層劃分和對(duì)比,精細(xì)劃分油層組;在區(qū)域地層劃分與對(duì)比基礎(chǔ)之上,結(jié)合已有的沉積相研究,通過(guò)巖心觀察與薄片分析,結(jié)合露頭資料和測(cè)井分析資料,總結(jié)彬長(zhǎng)區(qū)塊長(zhǎng)6與長(zhǎng)7主要砂體的巖性特征、構(gòu)造特征、粒序特征、剖面結(jié)構(gòu)以及測(cè)井相特征,在對(duì)彬長(zhǎng)區(qū)塊取心段沉積微相研究的基礎(chǔ)上,結(jié)合測(cè)井曲線,對(duì)單井長(zhǎng)6與長(zhǎng)7段的沉積微相開(kāi)展研究,同時(shí)結(jié)合彬長(zhǎng)區(qū)塊外圍研究成果及區(qū)域沉積背景,進(jìn)行沉積微相的劃分及相標(biāo)志的建立,明確有利沉積微相的展布特征;開(kāi)展各油層組的巖性、沉積特征、剖面結(jié)構(gòu)以及測(cè)井相特征研究,側(cè)重對(duì)儲(chǔ)層的巖石學(xué)、孔隙特征、物性特征、儲(chǔ)層孔隙結(jié)構(gòu)特征、沉積相等方面開(kāi)展研究,結(jié)合薄片觀察、壓汞曲線和描述,對(duì)彬長(zhǎng)區(qū)塊基質(zhì)孔隙發(fā)育的因素進(jìn)行分析,進(jìn)行有效儲(chǔ)層的識(shí)別和分類,將彬長(zhǎng)區(qū)塊長(zhǎng)6段和長(zhǎng)7段復(fù)雜砂巖儲(chǔ)層各劃分出2類有效儲(chǔ)層類型;以儲(chǔ)層巖性、物性、電性和含油性等四性關(guān)系研究為基礎(chǔ),尋找出典型井的電性特征及含油性特征,開(kāi)展典型井巖性、物性、電性和含油性等四性分析;研究?jī)?chǔ)層物性與粒度、成分、雜基含量等巖石學(xué)參數(shù)之間的關(guān)系,研究不同成因砂體的儲(chǔ)集物性特征,研究不同成因砂體的成巖演化路徑及各成巖作用強(qiáng)度,確定儲(chǔ)層發(fā)育的主要控制因素;在儲(chǔ)層發(fā)育控制因素分析的基礎(chǔ)上,根據(jù)沉積相、砂體厚度、儲(chǔ)層類型等,進(jìn)行彬長(zhǎng)區(qū)塊儲(chǔ)層分類評(píng)價(jià),研究不同產(chǎn)能段的儲(chǔ)層特征,根據(jù)產(chǎn)能進(jìn)行儲(chǔ)層物性下限研究,并對(duì)儲(chǔ)層進(jìn)行相應(yīng)的分類評(píng)價(jià),在儲(chǔ)層評(píng)價(jià)標(biāo)準(zhǔn)的基礎(chǔ)上,對(duì)長(zhǎng)6段和長(zhǎng)7段儲(chǔ)層開(kāi)展平面上綜合評(píng)價(jià),預(yù)測(cè)和優(yōu)選了彬長(zhǎng)區(qū)塊長(zhǎng)6段和長(zhǎng)7段儲(chǔ)層的有利儲(chǔ)集相帶。成果如下:(1)在掌握彬長(zhǎng)區(qū)塊已完鉆的近百口井資料的基礎(chǔ)上,利用沉積旋回結(jié)合厚度漸變?cè)瓌t,對(duì)彬長(zhǎng)區(qū)塊的近百口井延長(zhǎng)組小層進(jìn)行了重新對(duì)比劃分,將目的層長(zhǎng)6細(xì)分為長(zhǎng)61、長(zhǎng)62和長(zhǎng)63三層,長(zhǎng)7細(xì)分為長(zhǎng)71、長(zhǎng)72和長(zhǎng)73三層,將長(zhǎng)8細(xì)分為長(zhǎng)81和長(zhǎng)82兩層。(2)彬長(zhǎng)區(qū)塊主要沉積一套與砂質(zhì)碎屑流為主、濁流為輔的深水重力流沉積體系,碎屑流砂體單期分布面積較小,但厚度大,發(fā)育期次多,常常多期疊置形成厚層的砂巖,是長(zhǎng)6段和長(zhǎng)7段的主力砂體。(3)結(jié)合壓汞曲線,薄片觀察,儲(chǔ)層的物性、孔隙特征以及孔隙結(jié)構(gòu)特征,辨別出彬長(zhǎng)區(qū)塊長(zhǎng)6段和長(zhǎng)7段各2類有效儲(chǔ)層。(4)在儲(chǔ)層巖性、物性、電性和含油性等四性關(guān)系研究的基礎(chǔ)上,結(jié)合優(yōu)質(zhì)儲(chǔ)層發(fā)育的控制因素,開(kāi)展儲(chǔ)層評(píng)價(jià)研究,根據(jù)儲(chǔ)層評(píng)價(jià)并利用此標(biāo)準(zhǔn)優(yōu)選出長(zhǎng)6段和長(zhǎng)7段的二類油氣有利儲(chǔ)集區(qū)帶,其中一類為砂體厚度大且連片發(fā)育的區(qū)域,另一類為砂體厚度雖較小且局部裂縫發(fā)育的區(qū)域。
[Abstract]:The area of 3011.8km2 oil and gas exploration in Binchang block Erdos basin, the main oil-bearing series for long 8, long 7, long 6, wells has nearly 100 mouth, 2D seismic 1662.32km, 3D seismic 837.483km2, currently in the long 6, long industrial oil flow of 7 sections of group wells, but the overall level of exploration and development low, has not yet formed a large scale reserves and development. Construction area transition area Binchang blocks long 6 and long 7 reservoir group is mainly located in the lacustrine delta front and shallow semi deep lake facies, although the development of sand body wide area, but in different periods and different causes of the distribution of sand body rules are different; Chang 6 and Chang 7 reservoir is of low porosity, low permeability, unconventional tight reservoir, the reservoir heterogeneity and other factors, different wells in the range of the characteristics of reservoir, there is a big difference between the pore characteristics and logging electrical characteristics, find Kong Te low permeability background The relatively high permeability reservoir under the "dessert" is the main problem currently facing the Binchang block; Chang 6 and Chang 7 reservoir group complex relationship between oil and water, reservoir interpretation coincidence rate, test result is poor; in general, Binchang block of Chang 6 and Chang 7 member of Yanchang Formation reservoir is tight, complex pore structure, fracture, reservoir types, fluid properties and distribution of complex reservoir types, the capacity difference is big, inefficient oil, oil production decline fast, stable problem is difficult. But on the whole bin long block length 6, Chang 7 oil-bearing sandbody, reservoir well, the amount of oil and gas resources, has broad prospects for exploration and development, it is necessary to carry out fine division of reservoir group, studying reservoir four relations, effective reservoir classification, quantitative evaluation standard of reservoir, and the main control factors of reservoir development in the foundation, the reservoir favorable zone optimization for long bin area A low porosity, low permeability, low abundance, and provides technical support for exploration and development of reservoir is low, achieve further breakthroughs in Binchang block reservoir of Yanchang Formation and rapid production. Through a pressing matter of the moment of regional geological background from the North China Craton Basin, tectonic evolution, research and development of exploration blocks and adjacent areas of understanding on the basis of previous research, this paper makes full use of the existing Binchang Block drilling, logging, logging and analytical data, based on the thickness variation, stratigraphic sedimentary cycle and the electrical characteristic of Binchang block length contrast, paragraph 6, of the stratigraphic division and correlation of Chang 7 and Chang 8 formation, development and clear the distribution of stratigraphic layers, and carry out the Yanchang formation division and correlation in the whole area, fine division of reservoir group; on the basis of regional stratigraphic division and correlation, combined with the existing phase of deposition, through the core Observation and analysis of thin section, combining outcrop data and logging data, summarized lithology, Binchang block 6 and 7 main sand body structure, grain sequence characteristics, section structure and logging facies, based on coring section of Binchang block study of sedimentary microfacies, combined with logging curves. The deposition of single well long 6 and long 7 microfacies research, combined with the research results of Binchang block and peripheral regional sedimentary background, establish sedimentary microfacies and facies division, clear sedimentary microfacies distribution characteristics; carry out of each reservoir rock, sedimentary characteristics, research section structure well logging facies, focusing on reservoir petrology, pore characteristics, physical properties, pore structure characteristics, sedimentary facies research, combined with thin section observation, mercury injection curves and description of factors of pore development in Binchang block matrix analysis, The identification and classification of effective reservoir, will block Binchang Chang 6 and Chang 7 section of the complex sandstone reservoir are divided into 2 types of effective reservoir types; the reservoir lithology, physical property, electrical property and oiliness of four as the foundation, and the oil-bearing characteristic electrical characteristics for origin well, to carry out the typical well lithology, physical property and oiliness, analysis of four of electricity; and size, reservoir of components, the relationship between the content of matrix and petrological parameters, physical characteristics research of different genetic sandstone reservoir, diagenesis and diagenetic intensity of each path study on various sandbodies, determining the controlling factors of reservoir development; analyzing the controlling factors of development in the reservoir, according to the sedimentary facies, sand body thickness, reservoir type, reservoir of Binchang classification evaluation, reservoir characteristics of different segments of the production capacity, according to the reservoir the lower limit of 鐮旂┒,騫跺鍌ㄥ眰榪涜鐩稿簲鐨勫垎綾昏瘎浠，

本文編號(hào)：1655505