基于日费制管理模式的彬4井钻井关键技术

日费制管理模式突出甲方主导作用，实现管理程序的优化和生产运行的紧凑高效。彬4井是中国石化为钻井完井日费制管理市场化运行而在国内试点的第一口日费制探井，该井钻遇地层具有缝洞发育、漏失风险高、研磨性强和可钻性差等特点，钻井面临易漏失、易坍塌掉块、蹩跳钻严重和机械钻速低等技术难点。针对上述钻井技术难点，在严格执行中国石化钻井完井工程日费制管理体系的前提下，制定了各井段提速破岩方案，优选各井段的破岩钻具组合，研制封堵防塌钻井液，形成了综合高效钻井关键技术。实钻结果表明，该井在生产时效、钻井完井周期、复杂处理及平均机械钻速等方面均实现了突破，钻井期间零故障、零停待，实钻井深 4?056?m，钻井周期35.06 d，完井周期39.79 d，全井平均机械钻速16.04 m/h，钻井周期、完井周期和平均机械钻速等指标均创彬长工区探井施工纪录。研究结果表明，日费制管理模式在新技术集成应用和管理效率方面具有优势，彬4井钻井关键技术和管理模式具有可复制性、可借鉴性，为日费制管理市场化运行与推广提供了示范。 

Key Drilling Technologies of Well Bin 4 under the Daily Rate System Management Mode

The daily rate system management?mode highlights the leading role of Party A, thereby optimizing management procedures and and increasing the efficiency of completion operations. To promote the market-oriented operation of daily rate system management for drilling and completion, Sinopec selected Well Bin 4 as the first pilot exploratory well to use the system in China. The drilled strata of the well feature fracture-cavity development, high leakage risk, strong abrasiveness, and poor drillability, which lead to many drilling difficulties, such as being very leak-prone, highly likely to collapse and break, subject to serious bit bouncing, and low rate of penetration(ROP). In response to these drilling problems, key technologies for comprehensive and efficient drilling were developed. They are based on the formulation of ROP increase and rock breakage plans for different well sections, the optimal selection of drilling BHA(Bottom Hole Assembly) for rock breakage at different well sections, and the development of a plugging and anti-sloughing drilling fluids while strictly implementing the the daily rate system management mode which was customized for Sinopec’s drilling and completion projects. The field application revealed that breakthroughs were made in terms of operation efficiency, drilling and completion periods, complex processing, and average ROP, and there were no failures or shutdowns during drilling. With a drilling depth of 4 056 m, the drilling period, well completion period, and the average ROP of the whole well were 35.06 days, 39.79 days, and 16.04 m/h, respectively, all of which set records for exploratory well constructions in the Binchang Work Area. The research shows that the daily rate system management mode has advantages in the integrated application of new technologies and management efficiency. Moreover, the key drilling technologies and management mode of Well Bin 4 are reproducible and can be used as reference, which provide a demonstration for the market-oriented operation and promotion of the daily rate system.