王府地区地层抗钻特性研究及钻头选型

发布时间：2018-10-20 20:44

【摘要】：王府气田是2013年吉林油田天然气评价开发的重点区块,共部署20口井,计划建产能1.65亿方。该气田下部登娄库组至沙河子组地层钻井速度慢、周期长,下部四分之一井段钻井周期占全井施工周期的三分之二。2012年,虽然在城深602井开展涡轮配合孕镶金刚石钻头钻井提速技术试验取得了初步成功,但其经济性差,难以全面推广应用。为进一步提高钻井速度、加快该区气藏开发步伐,需要进一步开展以高效钻头优选为突破口的钻井提速技术研究。本文从王府气田地层抗钻特性入手,分别对岩石可钻性、研磨性等抗钻特性参数进行测定,包括:岩石硬度、塑性系数、微牙轮钻头可钻性、微PDC钻头可钻性、研磨性测试,并以测试数据为基础,运用数理统计方法,建立了地层抗钻特性参数与测井资料的相关性模型,并形成了王府气田城深604、城深605和城深606井3口井抗钻特性剖面。将抗钻特性剖面与虚拟强度指数法结合起来评价已施工井钻头选型情况及钻井参数使用情况。本文以机械钻速、进尺和单只钻头使用时间为效果评价指标,运用主成分分析法形成钻头优选方案,同时运用优化的以能量消耗为指标的虚拟强度指数钻头选型方法进行王府地区下部地层钻头优选,将两种评价方式不同的钻头选型方法所得出的优选结果进行对比分析,形成最终的钻头优选方案,为后续王府气田钻井提速及安全钻井施工,提供了依据。
[Abstract]:Wangfu gas field is a key block in Jilin Oilfield natural gas evaluation and development in 2013, with a total of 20 wells deployed, with a planned production capacity of 165 million square meters. The drilling speed of formation from Denglouku formation to Shahezi formation in the lower part of the gas field is slow and the period is long. The drilling cycle of the lower 1/4 well section accounts for 2/3. 2012 of the whole well operation cycle. Although the preliminary success has been obtained in the test of drilling speed raising technology with turbo and impregnated diamond bit in Chengshen 602 well, its economy is poor and it is difficult to be popularized and applied in an all round way. In order to further improve the drilling speed and speed up the development of gas reservoirs in this area, it is necessary to further develop the drilling speed raising technology based on the high efficient bit selection as the breakthrough point. Starting with the drilling resistance of Wangfu gas field, the drilling resistance parameters of rock, such as rock drillability and abrasive property, are measured, including: rock hardness, plasticity coefficient, drillability of micro-cone bit, drillability of micro-PDC bit, abrasive property test, etc. Based on the test data, the correlation model between drilling resistance parameters and logging data is established by means of mathematical statistics, and the drilling resistance characteristic profiles of Chengshen 604, Chengshen 605 and Chengshen 606 wells in Wangfu Gas Field are formed. The drilling characteristic profile and virtual strength index method are combined to evaluate the drill bit selection and drilling parameters. In this paper, the mechanical drilling speed, the ruler and the service time of a single bit are taken as the evaluation indexes, and the principal component analysis method is used to form the optimum selection scheme of the bit. At the same time, the optimized virtual strength index bit selection method based on energy consumption is used to optimize the bit selection in the lower strata of Wangfu area, and the optimal selection results obtained by the two different evaluation methods are compared and analyzed. The final scheme of bit selection provides a basis for increasing drilling speed and safe drilling construction in Wangfu gas field.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE921.1

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