【摘要】：錄井?dāng)?shù)據(jù)記錄了鉆井過(guò)程中的各種信息,是地質(zhì)分析解釋、指導(dǎo)勘探開(kāi)采的基礎(chǔ)。隨著計(jì)算機(jī)技術(shù)的發(fā)展以及錄井行業(yè)的需求變化,傳統(tǒng)的以二維圖件來(lái)展示、分析、處理錄井?dāng)?shù)據(jù)的方法已經(jīng)不能滿足深入理解地質(zhì)構(gòu)造的要求,三維地質(zhì)模型以其傳遞信息的直觀性、完整性等優(yōu)勢(shì),已成為發(fā)展的必然趨勢(shì)。本文從屬性建模和構(gòu)造建模兩個(gè)方面,研究基于錄井?dāng)?shù)據(jù)的三維地質(zhì)建模方法。主要研究?jī)?nèi)容與研究成果包括以下幾個(gè)方面：1)論述三維地質(zhì)建模的基本理論和常用方法,對(duì)不同方法進(jìn)行對(duì)比分析,總結(jié)各個(gè)模型的優(yōu)缺點(diǎn)和適用范圍,為本文的研究奠定基礎(chǔ)。2)研究錄井?dāng)?shù)據(jù)的分類以及不同類別的數(shù)據(jù)在三維建模中的作用,闡述錄井?dāng)?shù)據(jù)未經(jīng)過(guò)分層處理的特點(diǎn),分析錄井?dāng)?shù)據(jù)的空間特征,總結(jié)錄井?dāng)?shù)據(jù)對(duì)屬性建模和構(gòu)造建模的要求,明確本文的研究目標(biāo)。3)分析普通克里金方法的基本原理,在此基礎(chǔ)上,采用按海拔搜索的方式,以變組長(zhǎng)進(jìn)行分組,計(jì)算實(shí)驗(yàn)半變異函數(shù),分別研究球面模型、局部加權(quán)擬合和三次多項(xiàng)式擬合的半變異函數(shù)擬合方法,通過(guò)井內(nèi)估計(jì)和井間估計(jì)實(shí)驗(yàn),驗(yàn)證三次多項(xiàng)式擬合方法更能夠適應(yīng)錄井?dāng)?shù)據(jù)的分布特點(diǎn),估計(jì)結(jié)果精度較高。4)研究構(gòu)造建模中的表面模型和實(shí)體模型。研究曲面三角網(wǎng)格法,以刻畫(huà)目的層的不規(guī)則結(jié)構(gòu),降低模型對(duì)數(shù)據(jù)的依賴性。利用規(guī)則網(wǎng)格模型和長(zhǎng)方體實(shí)體模型的轉(zhuǎn)換,實(shí)現(xiàn)錄井?dāng)?shù)據(jù)的快速展示與輔助地質(zhì)分析的目的。5)分析與設(shè)計(jì)基于錄井?dāng)?shù)據(jù)的三維地質(zhì)建模系統(tǒng),討論系統(tǒng)的架構(gòu)和模塊劃分,設(shè)計(jì)相應(yīng)的三維數(shù)據(jù)庫(kù),對(duì)系統(tǒng)進(jìn)行編碼實(shí)現(xiàn)。通過(guò)應(yīng)用實(shí)例,驗(yàn)證本文研究方法的可行性與有效性。本文研究的三維建模方法,實(shí)現(xiàn)了錄井?dāng)?shù)據(jù)的三維展示與分析,模型的精度較高,能夠滿足錄井行業(yè)的需求,對(duì)于促進(jìn)錄井行業(yè)的發(fā)展具有重要的現(xiàn)實(shí)意義。
[Abstract]:Logging data record all kinds of information in drilling process, which is the basis of geological analysis and interpretation, guiding exploration and exploitation. With the development of computer technology and the change of mud logging demand, the traditional method of displaying, analyzing and processing logging data with two-dimensional maps can not meet the requirements of deep understanding of geological structure. 3D geological model has become an inevitable trend of development because of its advantages such as the intuitiveness and integrity of information transmission. In this paper, the 3D geological modeling method based on mud logging data is studied from two aspects: attribute modeling and structural modeling. The main research contents and results include the following aspects: 1) the basic theory and common methods of 3D geological modeling are discussed, the different methods are compared and analyzed, and the advantages and disadvantages and applicable scope of each model are summarized. 2) studying the classification of logging data and the role of different types of data in 3D modeling, expounding the characteristics of logging data without stratification processing, and analyzing the spatial characteristics of logging data. This paper summarizes the requirements of mud logging data for attribute modeling and structural modeling, and clarifies the research objectives of this paper. 3) analyzing the basic principles of the common Kriging method. The semi-variogram fitting methods of spherical model, local weighted fitting and cubic polynomial fitting are studied, respectively. The experiments of in-well estimation and cross-well estimation are carried out. It is verified that the cubic polynomial fitting method is more suitable for the distribution of logging data, and the accuracy of estimation results is high. 4) the surface model and solid model in structural modeling are studied. In order to depict the irregular structure of the target layer and reduce the dependence of the model on the data, the triangular mesh method of curved surface is studied. By using the transformation of regular grid model and cuboid solid model, the purpose of rapid display of logging data and auxiliary geological analysis is realized. 5) the 3D geological modeling system based on logging data is analyzed and designed, and the architecture and module partition of the system are discussed. Design the corresponding three-dimensional database and code the system. The feasibility and effectiveness of the method are verified by an application example. The 3D modeling method studied in this paper realizes the 3D display and analysis of logging data. The accuracy of the model is high, which can meet the needs of logging industry, and has important practical significance to promote the development of logging industry.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P628.3

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本文編號(hào)：2269390