發(fā)布時間：2018-06-25 23:36

  本文選題：嘉陵江組 + 地震相分析��； 參考：《成都理工大學》2017年碩士論文

【摘要】：為了進一步加快川東南地區(qū)有利儲層勘探進程,本論文選取優(yōu)勢儲層地區(qū):川東南綦江區(qū)塊。以該區(qū)塊嘉陵江組為研究對象,以野外露頭觀測,測井、地震資料為基礎,以沉積巖石學,地震地層學,相關分析等學科技術為理論指導。開展了川東南地區(qū)綦江區(qū)塊嘉陵江組地層地震相分析及儲層預測研究,在此基礎上劃分出該地區(qū)有利儲層區(qū)帶,并對儲層區(qū)帶進行評價。取得的認識成果如下:(1)將采集巖樣與鉆、測井資料,結合沉積學、層序地層學相關理論,對目標地層進行沉積相分析研究。分析沉積環(huán)境,明確層序格架內(nèi)沉積模式,結合單井沉積相分析成果,進行剖面沉積格架刻畫。將研究區(qū)嘉陵江組發(fā)育沉積體系為碳酸鹽巖臺地沉積相,并劃分為4個亞相,若干個微相。(2)合成地震記錄并結合地震地層學相關理論進行地震剖面解釋,將地震剖面與測井資料結合,劃分地震相。將研究區(qū)劃分出4個地震相,Ⅰ類頂部與內(nèi)部均以空白反射為主,偶見頂部有斷續(xù)反射,Ⅱ類頂部為單相位、弱振幅、連續(xù)較連續(xù)席狀反射,內(nèi)部主要為空白反射,局部有斷續(xù)弱反射,Ⅲ類,頂部為雙相位,較連續(xù)席狀反射,局部為斷續(xù)反射,內(nèi)部為空白反射,Ⅳ類中高頻,3-4個相位,弱-中強振幅、連續(xù)較連續(xù)席狀反射。(3)根據(jù)測井和地震響應特征,確定局部地震異常。得到研究區(qū)西部嘉陵江組發(fā)育較多前積、前積伴隨波狀、短軸狀、星點狀等局部異常體。東北方向沉積泥質(zhì)含量加重。(4)分析測井、鉆井資料,結合嘉陵江組儲層特征與資料條件,根據(jù)地震波組特征和波阻抗聯(lián)合分析,對研究區(qū)目的層進行相控分析,通過計算得到部分地區(qū)主要儲層灘相速度與子波主頻率,預測優(yōu)勢沉積相相關性好的區(qū)域。與沉積相地震相平面展布結合,成功劃分出有利儲層相帶。(5)綜合以上成果,劃分出6個川東南綦江地區(qū)嘉陵江組儲層有利區(qū)帶,其中Ⅰ類1個,Ⅱ類3個,Ⅲ類2個。
[Abstract]:In order to speed up the process of favorable reservoir exploration in southeastern Sichuan, this paper selects the superior reservoir area: Qijiang block in southeastern Sichuan. Taking Jialingjiang formation in this block as the research object, taking outcrop observation, logging and seismic data as the basis, and taking sedimentary petrology, seismostratigraphy, correlation analysis and other disciplines as theoretical guidance. The seismic facies analysis and reservoir prediction of Jialingjiang formation in Qijiang block in southeast Sichuan are carried out. On the basis of this the favorable reservoir zones in this area are divided and the reservoir zones are evaluated. The results obtained are as follows: (1) Sedimentary facies analysis of target strata is carried out based on the collection of rock samples drilling and logging data combined with the related theories of sedimentology and sequence stratigraphy. The sedimentary environment is analyzed and the sedimentary model in sequence framework is defined. Combined with the results of single well sedimentary facies analysis, the profile sedimentary framework is described. The sedimentary system of Jialingjiang formation is divided into four subfacies and several microfacies. (2) synthetic seismogram and seismic stratigraphic theory are used to interpret the seismic profile. Seismic facies are divided by combining seismic profile with logging data. The study area is divided into four seismic facies. The top and interior of type I are mainly composed of blank reflection, occasionally there is intermittent reflection at the top of the top, and the top of type II is single phase, weak amplitude, continuous and continuous sheet reflection, and the interior is mainly blank reflection. There are intermittent weak reflections in the region, type 鈪，

本文編號：2068029