首页> 外国专利> METHOD OF GUIDING HORIZONTAL WELLBORE IN TARGET RANGE OF SEDIMENTARY ROCKS BASED ON ELEMENTAL ANALYSIS OF SLURRY

METHOD OF GUIDING HORIZONTAL WELLBORE IN TARGET RANGE OF SEDIMENTARY ROCKS BASED ON ELEMENTAL ANALYSIS OF SLURRY

机译:基于淤泥元素分析的沉积岩目标范围内水平井导引方法

摘要

FIELD: soil or rock drilling.;SUBSTANCE: invention relates to geological tracking of well drilling for correction of trajectory of horizontal wellbore borehole in the target interval of sedimentary rocks on the basis of elemental analysis of slime. Method of horizontal well shaft boring in target range of sedimentary rocks based on element analysis of sludge involves obtaining during drilling of inclination and well logging data from the bottomhole of location of drilling tool, extraction and washing of slurry from drilling fluid with subsequent drying, correction of trajectory of shafting along target interval. Prior to drilling, target interval is divided into patches and sub-patches using logging data, microdescription of core and element composition of rocks, investigated with spacing of not more than 0.3 m. Based on seismic prospecting data and selected patches and sub-patches of target interval in all wells of the deposit by method of layer-by-layer deepening, three-dimensional structural framework of the target interval is constructed, and the planned profile of the horizontal wellbore is selected. Barrel passes through interval of cut, containing maximum volume of headers. Elemental composition of the slurry is quickly analyzed to determine slurry affiliation to a particular patch of the cut, and based on the logging data and the determined patch of the cut, a decision is made on the need to correct the trajectory of the horizontal wellbore.;EFFECT: high accuracy of guiding a horizontal shaft in target patches by accurate determination of the position of the drilling tool in the section of deposits, to minimize risks of flight to non-target patches of the section, loss of the shaft during collapse of unstable rocks, high efficiency of HFF, start-up rate and operating time of the well.;1 cl, 2 tbl, 4 dwg
机译:泥质元素分析技术领域本发明涉及钻井的地质跟踪,以在煤泥的元素分析的基础上校正沉积岩目标间隔内水平井眼的轨迹。基于污泥元素分析在沉积岩目标范围内水平井竖井的方法,包括在钻井过程中从钻具位置的井底获得倾角和测井数据,从钻井液中提取和洗涤泥浆,然后进行干燥,校正沿目标间隔的轴轨迹的变化。在钻探之前,利用测井数据,岩心的微观描述和岩石的元素组成对目标间隔进行划分,将其划分为斑块和子斑块,并以不超过0.3 m的间距进行调查。基于地震勘探数据,通过分层加深的方法,在矿床所有井中选择了目标区间的斑块和子斑块,构造了目标区间的三维结构框架,并规划了水平井的规划剖面。选择井眼。枪管经过切割的时间间隔,其中包含最大数量的割台。快速分析浆液的元素组成,以确定其与切屑特定斑块的关系,并根据测井数据和确定的切屑斑块,决定是否需要校正水平井眼的轨迹。效果:通过准确确定沉积部分中钻具的位置,高精度地在目标斑块中引导水平井筒,从而最大程度地减小了飞向该部分的非目标斑块的风险,以及在塌陷过程中井筒的损失不稳定的岩石,HFF的效率高,井的启动率和运行时间长; 1 cl,2 tbl,4 dwg

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