《川东北河坝构造地层可钻性分析与破岩方式优选》-毕业论文设计（学术).doc

川东北河坝构造地层可钻性分析与破岩方式优选 摘 要 岩石可钻性是指在一定技术条件下，钻进破碎岩石的难易程度，或者是井底岩石抵抗钻头破碎的能力。地层可钻性研究是钻井中的一项基础工作，也是钻井设计和施工中必备的一个基本环节，是确定钻井方式、选择破岩工具、预测钻速、用于钻井参数优选的主要依据，是优化钻井技术和科学钻井系统工程的基础。 川东北地层属于海相沉积，大部分地层是碳酸岩岩层，而且地层复杂，所以钻进尤为困难。对该区块的地层进行可钻性分析，可以评价已知的地层和预测将要钻探的地层，建立这一区块的地层可钻性剖面。这样我们就可以对每一个岩层段选用最优最合理的破岩方式，取得最好的经济效益。 本文通过收集川东北河坝构造地层已钻的几口井的地质资料和钻井资料，总结分析分析河坝构造的地质概况和钻井概况，提出目前河坝构造钻井中存在的主要技术问题。收集河坝构造的测井资料和岩心资料，研究地层可钻性和研磨性的预测模型，计算地层可钻性和研磨性，分析河坝地区的地层特点，建立地层可钻性综合剖面。进而统计分析川东北和川西地区的钻井资料，对钻井方式、钻头类型及使用效果、钻进参数等进行分析；根据河坝构造的地层特点，优选适合不同层段的钻井方式、钻头类型和钻进参数。 关键词：岩石可钻性；研磨性；可钻性剖面 ABSTRACT Drillability refers to certain technical conditions, the ease of broken rock or the ability of rock bottom of the wells to resist broken bits.The study of drillability is a basis for drilling work,is also an essential and fundamental aspect to design and construction.The main basis for determining the drilling mode, selecting rock tools, drilling rate forecast for the optimal drilling parameters,optimizing the drilling technical and scientific basis for systems engineering. Northeast Sichuan are marine sedimentary strata, the majority of rock formation is a carbonate rock, and the formation is complex,so it is particularly difficult for drilling.Drillability analysis for the formation of the block, to evaluate and predict the formation known and to be known, to establish the formation of the block drillability profile. So that we can select the most reasonable way for each and every paragraph to obtain the best value for money. In this paper, analysis the dam construction and drilling Geology Overview by collecting geological data and drilling data of a few wells have been drilled of the northeastern Sichuan dam structure formation, and put the main technical problems forward. Establish an integrated stratigraphic section of drillability by collecting log data and core data, studying the prediction model of the formation of drilling and grinding, calculating of the drilling and grinding, analysising the characteristics of da