本文選題：海上油田　切入點(diǎn)：層序地層學(xué)　出處：《海洋地質(zhì)前沿》2016年11期

【摘要】：渤海新近紀(jì)淺水三角洲沉積儲(chǔ)層縱橫向變化快、隔夾層發(fā)育,在少井條件下如何開(kāi)展儲(chǔ)層展布研究及水平井部署是海上油田開(kāi)發(fā)早期亟待解決的問(wèn)題。以渤中A油田淺水三角洲相X沉積體為例,據(jù)巖心、測(cè)井、地震等資料分析儲(chǔ)層沉積特征,在高分辨率層序地層學(xué)指導(dǎo)下細(xì)分成因單元,分析單砂體對(duì)應(yīng)測(cè)井、地震波形特征并刻畫(huà)其展布。研究區(qū)儲(chǔ)層類型以疊置分流河道、河口壩及河道間沉積為主,結(jié)合高分辨率地層學(xué)將目的層劃分為1個(gè)短期旋回、4個(gè)超短期旋回,反映了一套基準(zhǔn)面逐漸下降至暴露環(huán)境,后基準(zhǔn)面上升至再次湖泛的過(guò)程。根據(jù)儲(chǔ)層沉積特征、地震響應(yīng)特征和復(fù)合砂體精細(xì)構(gòu)型研究,識(shí)別出復(fù)合砂體的3種接觸關(guān)系,同時(shí)對(duì)X沉積體進(jìn)行了單河道識(shí)別和隔夾層分布規(guī)律研究,將X沉積體細(xì)分為3期單元砂體,并總結(jié)出3種儲(chǔ)層結(jié)構(gòu)類型,結(jié)合已有水平井的生產(chǎn)動(dòng)態(tài)特征,提出X沉積體水平井部署的4種開(kāi)發(fā)模式,有效指導(dǎo)了開(kāi)發(fā)井實(shí)施。
[Abstract]:In the Neogene shallow water delta sedimentary reservoir in Bohai Sea, the vertical and horizontal direction changes rapidly and the intercalation is developed. How to develop reservoir distribution and horizontal well deployment under the condition of few wells is an urgent problem to be solved in the early stage of offshore oilfield development.Taking the X sedimentary body of shallow water delta facies in Bozhong A Oilfield as an example, the sedimentary characteristics of reservoir are analyzed according to core, logging and seismic data. Under the guidance of high resolution sequence stratigraphy, genetic units are subdivided to analyze the corresponding logging of single sand body.The characteristics of seismic waveform and its distribution are described.The reservoir types in the study area are mainly superimposed distributary channel, estuarine dam and interchannel sedimentation. Combined with high resolution stratigraphy, the target layer is divided into a short cycle and four ultra short term cycles, which reflects the decreasing of a set of datum level to exposed environment.The process of rising to the level of the lake again.According to reservoir sedimentary characteristics, seismic response characteristics and fine configuration of composite sand body, three contact relationships of composite sand body are identified. At the same time, single channel identification and intercalation distribution law of X sedimentary body are studied.X sedimentary body is subdivided into 3 stage unit sand bodies, and three reservoir structure types are summarized. Combined with the production dynamic characteristics of existing horizontal wells, four development models of horizontal wells in X sedimentary body are put forward, which effectively guide the implementation of development wells.
【作者單位】： 中海石油(中國(guó))有限公司天津分公司渤海石油研究院;
【分類號(hào)】：TE53;P618.13

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本文編號(hào)：1707420