This paper presents the requirements that led to the successful implementation of a subsea hydraulic hammer for installation of conductors offshore Brazil. The Parque das Conchas development required conductors both for wells and for the two Artificial Lift Manifolds (ALM). For the 36 inch well conductors it was important that the conductors were installed off the rig critical path and for the 48 inch ALM conductors the critical issue was the accuracy of the conductor height for subsequent manifold placement. The solution was to install the respective conductors using a subsea hammer deployed from an Anchor Handling Vessel (AHV). The ALM templates were transported offshore vertically on the AHV’s A-frame, submerged and rotated to a horizontal position, and deployed to the seafloor. Once the templates were correctly positioned, the well and ALM conductors were transported offshore on a specially outfitted barge. The conductors were launched from the barge while connected by a line to the anchor handler. Then they were lowered and allowed to self-penetrate into the seabed. Once all the conductors were installed, they were hammered to depth using a subsea hydraulic hammer. Both ALM templates were placed accurately in position within 1.5 deg heading and 0.5 m in the horizontal plane and all conductors were successfully installed within verticality and height tolerances. The campaign included many industry firsts, in water depths ranging between 1650 and 1920m in relatively harsh metocean conditions. The industry firsts include: ? Vertical template transportation/insertion through water plane followed by horizontal lowering from AHV ? Deepwater hydraulic hammer spread deployed and operated from AHV ? A new depth record (1920 m water depth) for deepwater hammering. With the installations in Brazil the operating envelope of deepwater conductor installation with a hydraulic hammer has been significantly increased and provides a viable alternative to conductor installations with a deepwater drilling rig.
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机译：本文介绍了导致海底液压锤的成功实施，以便在巴西安装导线。 Parque DAS Conchas开发需要孔和两个人工升降歧管（ALM）的导体。对于36英寸井导体，导体安装在钻机关键路径上并为48英寸ALM导体安装关键问题是导体高度的准确性，以便随后的歧管放置。该解决方案是使用从锚固件（AHV）部署的海底锤安装相应的导体。 ALM模板在AHV的A型框架上垂直运输，浸没在水平位置，并部署到海底。一旦模板正确定位，井和ALM指挥就在特殊装备的驳船上运送了近海。通过一行到锚处理程序的连接时，导体从驳船启动。然后他们被降低并使其自渗透到海床中。一旦安装了所有导体，它们就会使用海底液压锤敲击深度。两种ALM模板都准确地放置在1.5°标题内，水平平面中的0.5米，所有导体都成功安装在垂直度和高度公差范围内。该活动包括许多行业首先，在相对苛刻的地区条件下，在1650至1920米之间的水深在水深范围内。行业的第一款包括：？垂直模板运输/插入通过水平面，然后从AHV下降水平深水液压锤蔓延从AHV部署和操作？深水锤击的新深度记录（1920米水深）。通过巴西的安装，深水导体安装的操作包络有一个液压锤的装置已经显着增加，并提供了具有深水钻井平台的导体装置的可行替代品。
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