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首页> 外文会议>NACE international corrosion conference and expo >Development of a Combination Scale- and Corrosion Inhibitor for High TDS Brines at High Temperature
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Development of a Combination Scale- and Corrosion Inhibitor for High TDS Brines at High Temperature

机译：高温下高TDS卤水阻垢缓蚀剂的研制

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Accounting for ～1.2 million bbls/day, the Bakken shale plays a significant part in the North American unconventional boom. The formation is characterized with low porosity and permeability, where wells exhibit high initial production rates and steep decline curves. Mitigating excessive decline is paramount to maintain return on investments. The system conditions and the produced water in the Bakken shale causes challenges that can impact productivity. The water composition is generally characterized with high total dissolved solids (TDS), resulting in high scaling tendencies for various species. In addition, corrosion is also a challenge due to high TDS, high downhole temperature (～250 ℉ /121 °C), medium CO_2 partial pressure (40-50 psi / 0.28 - 0.34 MPa), and varying wall shear stress. A chemical qualification process is herein discussed where a combination corrosion- and scale inhibitor has been developed. The chemical is a synergistic blend of corrosion inhibitor actives and surfactants for corrosion mitigation and solids control, combined with scale inhibitor and chelating agent for high iron tolerance scale prevention.
机译：占~120万个BBL /天，Bakken Shale在北美非常规繁荣中起着重要作用。该形成具有低孔隙率和渗透性，井显示出高初始生产率和陡峭的下降曲线。缓解过度下降至关重要，以维持投资回报。 Bakken Shale中的系统条件和生产的水导致可能影响生产率的挑战。水组合物通常具有高总溶解固体（TDS），导致各种物种的高缩放趋势。此外，腐蚀也是由于TDS高，井下温度高（〜250℉/ 121°C），中央CO_2分压（40-50psi / 0.28-0.34MPa），以及不同的壁剪切应力导致挑战。本文讨论了化学验证方法，其中组合腐蚀和规模抑制剂已经开发出来。该化学品是腐蚀抑制剂活性物质和表面活性剂的协同混合物，用于缓解缓解和固体对照，结合水垢抑制剂和螯合剂，用于预防高铁耐耐可。

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