【摘要】：本論文選取安岳-簡陽地區(qū)須家河組沉積相及儲(chǔ)層特征為研究對(duì)象,根據(jù)地表露頭剖面、巖心、鉆井資料、測井資料,結(jié)合測試分析成果,以沉積學(xué)、儲(chǔ)層地質(zhì)學(xué)和石油地質(zhì)學(xué)理論為指導(dǎo),對(duì)安岳-簡陽地區(qū)須家河組地層、沉積相及儲(chǔ)層特征進(jìn)行了詳細(xì)深入的研究,取得了如下研究成果和認(rèn)識(shí):1、須家河組至下向上分為6段,分別為須一~須六段。在地層劃分、對(duì)比的基礎(chǔ)上,系統(tǒng)研究了研究區(qū)須家河組及各段地層平面分布特征。2、在沉積微相識(shí)別標(biāo)志研究基礎(chǔ)上,將安岳-簡陽地區(qū)須家河組劃分為辮狀河三角洲和湖泊沉積體系。其中,三角洲沉積進(jìn)一步識(shí)別出辮狀河三角洲前緣和前三角洲巖相,湖泊沉積劃分為濱湖、淺湖亞相。在單井及井間沉積相對(duì)比研究基礎(chǔ)上,對(duì)安岳-簡陽地區(qū)須家河組各段沉積相平面展布特征做了系統(tǒng)研究,研究表明:研究區(qū)儲(chǔ)層段(須二段、須四段、須六段)均為辮狀河三角洲前緣亞相,具有由南至北的展布特征。3、對(duì)安岳-簡陽地區(qū)須家河組鉆井巖心觀察及普通薄片及鑄體薄片觀察、鑒定基礎(chǔ)上,系統(tǒng)研究了須家河組儲(chǔ)層段儲(chǔ)層巖性特征及孔隙結(jié)構(gòu)特征。研究區(qū)儲(chǔ)層段巖性以長石巖屑砂巖、巖屑長石砂巖為主,部分為巖屑砂巖。研究區(qū)須家河組儲(chǔ)層的孔隙類型可分為原生粒間孔隙、粒間溶蝕孔隙、雜基內(nèi)微孔隙、粒內(nèi)溶蝕孔隙、裂縫五類,有儲(chǔ)集意義的主要是原生粒間孔隙和粒間溶蝕孔隙。喉道類型有縮頸型喉道、點(diǎn)狀喉道、片狀喉道、彎片狀喉道、管束狀喉道。4、根據(jù)安岳-簡陽地區(qū)須家河組巖心物性分析資料,研究區(qū)須家河組屬特低孔、特低滲儲(chǔ)層。儲(chǔ)層類型以孔隙型儲(chǔ)層為主,并發(fā)育有裂縫-孔隙型儲(chǔ)層。5、應(yīng)用Q型逐步聚類分析方法進(jìn)行了儲(chǔ)層分類,在考慮孔隙度、滲透率、參數(shù)范圍的基礎(chǔ)上,結(jié)合孔隙結(jié)構(gòu)參數(shù)特征進(jìn)行綜合儲(chǔ)層分類。共劃分出四個(gè)類別的儲(chǔ)層,其中Ⅰ類儲(chǔ)層為好儲(chǔ)層,Ⅱ類為較好儲(chǔ)層,Ⅲ類為中等儲(chǔ)層,而Ⅳ類為差儲(chǔ)層。其中,研究區(qū)須家河組以Ⅲ類儲(chǔ)層為主,Ⅱ類儲(chǔ)層僅零星分布,Ⅰ類儲(chǔ)層極少。6、以上述儲(chǔ)層評(píng)價(jià)標(biāo)準(zhǔn)為標(biāo)準(zhǔn),在對(duì)研究區(qū)單井儲(chǔ)層劃分及儲(chǔ)層垂向演化特征研究基礎(chǔ)上,編制了須家河組須二段、須四段及須六段儲(chǔ)層孔隙度及儲(chǔ)層厚度平面分布圖,系統(tǒng)研究了各儲(chǔ)層段平面分布規(guī)律。
[Abstract]:In this paper, the sedimentary facies and reservoir characteristics of Xujiahe formation in Anyue-Jianyang area are selected as the research objects. Based on the outcrop profile, core, drilling data and logging data, combined with the results of test and analysis, sedimentology is studied. Under the guidance of reservoir geology and petroleum geology theory, the formation, sedimentary facies and reservoir characteristics of Xujiahe formation in Anyue-Jianyang area are studied in detail and deeply. The following research results and understandings are obtained: 1. The Xujiahe formation is divided into 6 sections from the bottom to the bottom. It is one to six paragraphs respectively. On the basis of stratigraphic division and correlation, the stratigraphic distribution characteristics of Xujiahe formation and its sections in the study area are systematically studied. The Xujiahe formation in Anyue-Jianyang area is divided into braided river delta and lacustrine sedimentary system. Among them, the delta sediments further identify the braided river delta front and pre-delta lithofacies, and the lacustrine deposits are divided into littoral and shallow lacustrine subfacies. Based on the comparative study of single well and interwell sedimentary facies, the distribution characteristics of sedimentary facies in Xujiahe formation of Anyue Jianyang area are systematically studied. ) are braided river delta front subfacies with the characteristics of spreading from south to north. 3. On the basis of the observation of drilling core and ordinary and cast thin sections of Xujiahe formation in Anyue-Jianyang area, The lithologic characteristics and pore structure characteristics of Xujiahe formation reservoir are systematically studied. The lithology of the reservoir in the study area is mainly composed of feldspathic sandstone, lithic feldspathic sandstone and partly lithic sandstone. The pore types of Xujiahe formation reservoir in the study area can be divided into primary intergranular pore, intergranular dissolution pore, intergranular micropore, intragranular dissolution pore and fracture. The main reservoir significance is primary intergranular pore and intergranular dissolution pore. The throat types include neck-necked throat, point throat, flaky throat, curved flaky throat and tubular bundle throat. 4According to the physical property analysis data of Xujiahe formation in Anyue and Jianyang area, the Xujiahe formation belongs to very low porosity and very low permeability reservoir. The reservoir type is mainly pore type reservoir, and there are fractures and pore type reservoirs. 5. The reservoir classification is carried out by using the method of Q type gradual clustering analysis, on the basis of considering porosity, permeability and parameter range, Combined with pore structure parameters, comprehensive reservoir classification is carried out. There are four types of reservoirs, one of which is good reservoir, the second is better reservoir, the third is middle reservoir, and the fourth is poor reservoir. Among them, the Xujiahe formation in the study area is mainly composed of type 鈪，

本文編號(hào)：2293237