本文選題：精細(xì)構(gòu)造解釋 + 相干體技術(shù)��； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：敖南油田Q區(qū)塊是水平井開發(fā)區(qū),水平井在鉆井過程中對儲層埋深在橫向上的變化要求精度十分高,構(gòu)造解釋精度直接關(guān)系到儲層反演及地質(zhì)建模的精度,因此會影響到水平井成功率,影響到對構(gòu)造特征分析的準(zhǔn)確程度。針對研究區(qū)對構(gòu)造解釋精度的特殊要求,論文對研究區(qū)進(jìn)行精細(xì)構(gòu)造解釋,加強(qiáng)對該區(qū)的構(gòu)造特征的認(rèn)識。本文在認(rèn)真分析和借鑒前人研究成果的基礎(chǔ)上,充分利用地震、測井和鉆井資料,對敖南油田Q區(qū)塊展開了深入細(xì)致的研究,對該區(qū)的葡一組油層組進(jìn)行了精細(xì)解釋,重點解釋葡一組頂界面(P32)與底界面(P52)及其斷裂研究,同時解釋了P11、P22、P42共五個小層,對全區(qū)地震層位解釋和斷層解釋,解釋測網(wǎng)密度為1x1。在解釋過程中,先后進(jìn)行地震地質(zhì)層位標(biāo)定,斷層解釋。針對研究區(qū)斷層發(fā)育、研究單元地震分辨率低,井震矛盾突出、小層刻畫難,應(yīng)用水平切片解釋技術(shù)、相干體時間切片解釋技術(shù)對平面斷層進(jìn)行解釋。采用剖面縱向放大技術(shù)對剖面斷層進(jìn)行解釋。最終得出敖Q區(qū)塊的P11、P22、P32、P42、P52小層等值線間隔為5m的構(gòu)造圖,開展葡一組頂界面(P32)與底界面(P52)微幅度構(gòu)造、小斷層研究,搞清主要目的層局部構(gòu)造的空間展布情況,搞清斷層平面及空間展布情況。共解釋斷層31條,分析得出了斷層傾向、一般長度、斷層斷距等數(shù)據(jù)。并且對敖南油田Q區(qū)塊的構(gòu)造形態(tài)的認(rèn)識也發(fā)生了較大的變化,得出研究區(qū)斷塊整體構(gòu)造形態(tài)為一北西傾的單斜,發(fā)現(xiàn)構(gòu)造高點位N2560312井區(qū),高點埋深-1155m,以及研究區(qū)北部葡一組頂面(P32)埋深-1200米左右。通過本次精細(xì)構(gòu)造解釋,使整個研究區(qū)深度目標(biāo)更加可靠,提供準(zhǔn)確的構(gòu)造和垂深,對敖南油田Q區(qū)塊的構(gòu)造特征進(jìn)行準(zhǔn)確的分析,為水平井設(shè)計奠定基礎(chǔ)。
[Abstract]:Q block in Aonan Oilfield is a horizontal well development zone, which requires high accuracy in horizontal variation of reservoir depth during drilling. The accuracy of structural interpretation is directly related to the accuracy of reservoir inversion and geological modeling. Therefore, it will affect the success rate of horizontal wells and the accuracy of structural characteristics analysis. In view of the special requirements of structural interpretation accuracy in the study area, the paper makes fine structural interpretation of the study area and strengthens the understanding of the structural characteristics of the study area. On the basis of careful analysis and reference of previous research results, this paper makes full use of seismic, logging and drilling data to carry out a thorough and meticulous study of Q block in Aonan Oilfield, and makes a fine interpretation of the Puyi formation in this area. Emphasis is placed on the interpretation of the top interface P32) and the bottom interface P52) and their faults. At the same time, the paper explains that there are five sublayers P11, P22 and P42, and that the density of the interpretation network is 1 x 1 for seismic horizon interpretation and fault interpretation in the whole area. In the process of interpretation, seismic geological horizon calibration and fault interpretation have been carried out successively. In view of the fault development in the study area, the seismic resolution of the research unit is low, the conflict between well and earthquake is prominent, and it is difficult to depict the small layer, the horizontal slice interpretation technique and the coherent volume time slice interpretation technique are used to interpret the plane fault. The longitudinal amplification technique is used to interpret the fault. Finally, the structural map of the P11P2P2P32P42P52 sublayer with a interval of 5m in AoQ block is obtained, and the micro amplitude structure and small fault of the top and bottom interfaces of the first group of Portugal are carried out to find out the spatial distribution of the local structures of the main target layers. To find out the distribution of fault plane and space. The data of fault inclination, general length and fault fault distance are obtained. Moreover, the understanding of the structural form of Q block in Aonan Oilfield has also changed greatly. It is concluded that the overall structural form of the fault block in the study area is a north-west dip monoclinal, and the well area N2560312 is found to have a high structural point. The buried depth of the high point is -1155 m, and that of the top surface of a group of Portugal in the northern part of the study area is about -1200 m. Through this fine structure interpretation, the depth target of the whole study area is more reliable, and the accurate structure and vertical depth are provided. The structural characteristics of Q block in Aonan Oilfield are analyzed accurately, which lays a foundation for horizontal well design.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13;TE243
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本文編號：1778282