膨胀式防砂筛管概览.ppt

膨胀式防砂筛管的目标 最大限度的提高产能 产能高于其他防砂方式 防砂效果好 作业效率高 用于套管内时具备分层功能 为何下膨胀式防砂筛管（ ESS? ）? 增加您的投资回报 提高采油指数 PI (加快回收) 更好的采收率 (更多的回收) 延缓底水锥进 (降低成本) 更多，更快收回投资 Maxus Cinta B-6 油田 英国北海水平井 整合膨胀的优点 价值 － 简化作业 安装 ESS? 的作业简便 泥浆配伍 后勤支持简便 作业灵活 可重复 HSE Issues 吊重轻 不需高压管线 改善环境 (不需处理/储存液体) 节省时间和成本 ESS? 设计 规格尺寸 我们可以 制造能力 ESS? 使用情况 防砂项目管理 应用 – 水平井 更高的 PI 大内径 = 减小摩阻 均匀流入 更小的压差 延缓水锥 改善油藏管理 提高采收率 应用 – 多油层 与套管内砾石充填比较 分层 可采用一次下井完成 简单 风险小 省时、省费用 应用 – 多分支井 减小井眼尺寸 ESS 有较大的内径 8 ?” 井眼充填后的内径为 4.89” 6” 井眼下 ESS 后的内径为 5.00” 内径对产能的影响 应用 – 注水井 高速注水 开口面积大 无渗透率伤害 极高的破裂强度 膨胀式防砂筛管的优点 整合膨胀 消除环空 稳定及支撑井壁 内径最大化. 改善向井流/提高采油指数PI 开口面积大 抗堵塞 不需更换泥浆 在裸眼井中使用具有套管井的功能 全是关于经济学 !! The cost associated with Internal Gravel Packing ESS for 3 different completion types is compared above (From Shell (BSP) - Reference SPE-68634) Time for 2nd 3rd jobs with ESS actually reduces despite being more complex and more zones (due to learnings and optimisation of procedures). Inflow Performance Relationship (IPR) curves showing flow rate versus drawdown. The effect of diameter alone has this impact on PI. In this case it can be seen that a 4” ESS inside 6” hole is better than 5 ?” stand alone screen inside 8 ?” hole. This means that at least the same productivity can be achieved with a smaller hole size by using ESS. Just as ESS has productivity benefits for production wells, injection wells benefit from the same features. Typically higher rates can be achieved as there is a large ID./ open area (more to plug). Borehole support means a low skin and no annulus. This slide is a visual illustration of the statements on the last slide showing even distribution of flow with a larger bore ESS and water coning at the heel of a well with a small ID. Gravel pack! Output from ECLIPSE a standard reservoir modeling software package marketed by Schlumberger Shows water moving rapidly towards heel of the well in the EGP however ESS is a much flatter profile giving an even distribution of flow. Time to water breakthrough with ESS is longer