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HPHT Horizontal Sand Control Completion

机译：HPHT水平防砂完工

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The Marnock field is a retrograde gas condensaternaccumulation in the central area of the North Sea. Compared tornconventional North Sea reservoirs it is near HPHT with arnpressure of 9123 psia and a temperature of 3100F.rnThe development plan comprised six horizontal wells, withrnaverage reservoir sections of 750m length. Drilling wasrnconducted in two phases and has delivered four wells capablernof the original plateau rate expected from six wells.rnWell completion design for this field presented significantrnchallenges. The main ones were; installing downhole sandrncontrol in a horizontal well, flow back of 1.9 sg drilling mudrnthrough sand screens and the use of an isolation valve to allowrnthe upper completion to be installed under balance.rnCompletion operations were initially delayed by equipmentrnfailures, and difficulties achieving the hole quality required forrninstallation of sand screens. The main elements of therncompletion design were revised to a modular approach,rnreducing interdependency and adding flexibility to thernoperation. Improvements in the drilling and preparation of thernreservoir section were also implemented.rnThe four wells completed are capable of delivering sandrnfree production, with individual well rates of up torn120mmscf/d.
机译：马诺克气田是北海中部的逆行凝析气气藏。与常规的北海储层相比，它的高压为9123 psia，温度为3100°F。开发计划包括6口水平井，平均储层长度为750m。钻井分两个阶段进行，已交付了4口井，能够满足6口井预期的原始平稳率。该井的完井设计带来了重大挑战。主要的是；在水平井中安装井下砂岩控制装置，将1.9 sg的钻井泥浆通过砂滤网回流，并使用隔离阀使上部完井装置平衡安装。-最初由于设备故障而推迟了完井作业，并且难以达到安装所需的井眼质量沙筛网。完成设计的主要元素被修改为模块化方法，从而减少了相互依赖性并增加了操作的灵活性。还对储层段的钻探和准备工作进行了改进。完成的四口井能够进行无砂生产，每口井的产能最高可达120mmscf / d。

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