防喷器控制装置应用水基溶液代替液压油作为液压介质,有利于减少生态环境污染,而该技术成功应用的关键在于装置所使用的阀件在水基溶液状态下的防锈、抗磨、耐腐性能.介绍了水基溶液特性,对水基溶液防喷器控制装置上所应用的关键元件的密封性能及材料选用进行分析,并对该技术应用前景进行了展望.

MaHW6007井位于准噶尔盆地玛湖油田玛18井区,是一口水平井,目的层三叠系百口泉组.该井水平段钻至5 100m换钻头下钻过程中,受相邻生产井油气窜影响,发生一起溢流事件,处理难度大、周期长.在邻井油气压力干扰极大的情况下,分析了MaHW6007井溢流压井案例,对其他区块井控作业具有一定借鉴意义.

金龙125井位于位于准噶尔盆地西部隆起中拐凸起金龙10井区,该井钻井过程中,上部地层承压能力弱易漏,目的层石炭系油气显示活跃,易发生溢流事件.在同一井筒两套压力系统并存的条件下,钻井施工井控风险较高.金龙125井运用非常规井控处置技术成功处理一起井控险情,通过该井溢流压井案例分析,对其他区块井控作业具有一定借鉴意义.

从中国石油2003年至2013年间发生的典型溢流井喷险情入手,分析了导致这些典型事故发生的常见原因,从设计、操作、设备、意识、培训、监督6个方面提出了加强设计的准确性、操作的规范性、设备的完整性、意识的防范性、培训的重要性和监督的专业性等基层井控管理工作的对策和建议.

介绍了JZZY-178和XZMC-178两种型号井下减振增压钻井工具技术原理、结构和技术特点,并对工具入井使用规范进行说明.通过现场应用实例介绍了井下减振增压钻井工具在新疆油田现场应用情况,对比邻井分析了提速效果,对提高深井硬地层机械钻速具有借鉴意义.

The tight oil reservoir drilling in Jimsar sag of Permian in Junggar basin is faced with several problems such as poor and slow rate of penetration,poor wellbore stability,serious blockage during tripping,etc. According to different geological conditions,a series of new drilling technologies were used to improve drilling speed in this area in 2012,including high efficiency PDC bit,self oscillating rotary percussion drilling tools,Torkbuster,etc,which allowed the drilling penetration rate to be improved and the complex damage rate to be de creased significantly or obviously.

Technologic challenges of improving drilling speed in WuXia area of Junggar basin include:low drilling penetration rate in hard formation,borehole deviation,serious circulation loss,high risk of well blowout,etc.Therefor,a series of new drilling techniques to improve drilling speed in this area was experimentally used in recent years,including foam drilling,Nitrogen drilling,impregnated diamond bit +high speed turbine drilling,vertical drilling,etc,through using the above new techniques,the drilling penetration rate was improved significantly,the complex time was decreased obviously.

克拉玛依风城井区风城组地层厚度超过1000m,可钻性差,地层岩石抗压强度高,常规钻井周期长,机械钻速低;通过认真总结、分析前期涡轮钻具使用经验,结合风城组地层地质特点,通过优选孕镶金刚石钻头、优化钻具组合,强化钻井参数,首次在北疆深部硬地层成功试用涡轮钻具,初步形成了针对准噶尔盆地深部硬地层以"涡轮钻具配合孕镶金刚石钻头"为主要提速手段的技术方案.

MS1 is the deepest exploratory well planned by PetroChina and it is one of the key science and technical research project examined at field too.φ311mm hole section was designed with 2000 m long and featured with hard stringers interbeded,poor drillability and higher mud weight.Drilling progress and cost will be immediately affected by bit performance.Rock confined compressive strength was analyzed to optimize PDC bit design for the third drilling interval,which will be used as the factors to determine cutter density,lay-out profile and working angles and hydraulic structures.Computer simulation on the spot was introduced to analyze bit movement to ensure bit working in a stable manner.It was verified after field application that the PDC bit performance designed by optimum design technology was much better than offsite well's and that played a positive role in the aspect of reducing drilling cost.