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首页> 外文会议>Society of Petroleum Engineers International Petroleum Technology Conference >Gas Lift Journey to Maximize the Asset Value in Platong Field, Gulf of Thailand
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Gas Lift Journey to Maximize the Asset Value in Platong Field, Gulf of Thailand

机译：气体升降之旅，最大化Platong Field，泰国海湾的资产价值

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Operating Platong field in the Gulf of Thailand (GoT) is challenging because of the small compartmentalized reservoirs in the fluvial deposition environment. As the completion strategy has to be low cost in order to achieve the economic hurdle rate and the initial strategy is to develop to be a gas field, a lot of existing oil wells do not have the artificial lift system in place. Without artificial lift, most of the oil wells usually cease flowing in 2-6 months. Therefore, the artificial lift is crucial to prolong the well life in Platong. Gas lift currently plays a very important role in Platong field. With the continuous initiation and operation improvement, production from Platong gas lifted wells has been gradually increasing from 10% in June 2008 to 50% of total field production in June 2011. The subsurface challenge for gas lift mainly involves with the effort of cost reduction. Drilling and completion improvements from 2-trip to mono-trip gas lifted completion in 2008 reduces a rig time by ~1 day/well (from total ~7 to ~6 days/well). Converting the existing producers that are not equipped with gas lift mandrels was initially undertaken by installing coiled tubing gas lifted assemblies. This method was subsequently replaced with the installation of slickline run straddle pack-off gas lift assemblies in 2010 at a cost saving by -73%. In terms of the production operation aspect, proper gas lift candidate selection process, excellent collaboration between office and offshore are the key components for the success. Beyond the gas lift injection rate optimization, the surface challenge is mainly related to the optimization of the gas lift sources from the back pressure reduction systems, i.e. Remote Compressor (RC) and the mobile Well Unloading Unit (WUU). The RC functions in both back pressure reduction and providing the high pressure gas lift gas to the producers. Several efforts have been put on the RC unit optimization and modification to maximize gas lift rate, for example the RC inter-stage is modified to increase gas lift rate from 2 to 5 MMscf/d which resulted in the oil increase of +500 bopd/platform. In May 2011, the modified WUU that can provide high pressure gas lift was implemented to revive the platform that does not have the RC to provide gas lift with the incremental oil of +1,000 bopd/platform. In Q2 and Q4 2011, four main gas lifted platforms are scheduled to commence the gas lift injection from a gas supply pipeline, where the gas source is supplied from the Central Processing Platform (CPP). We walk away from the gas lift from RC due to the limited gas reserves on those four platforms. With the continued gas lift completion and operation innovations in both surface and subsurface, proper working process in place, sufficient gas lift trainings for all personnel, and excellent collaboration between office located subject matter experts (SMEs) and offshore production operators, gas lift could significantly prolong the well life and certainly increase the recovery; as a result, enhance the asset value.
机译：由于河流沉积环境中的小隔间储层，泰国湾（GOT）在泰国湾（GOT）的普遍挑战。由于完成策略必须低成本，以实现经济障碍率和初始策略是发展成为一个天然气领域，很多现有的油井没有人工升力系统就位。没有人造升力，大多数油井通常在2-6个月内停止流动。因此，人工升力至关重要，延长了铂金中的井寿命。天然气升降机目前在铂金领域发挥着非常重要的作用。随着持续启动和运行改进，铂金煤气升起的井的产量从2008年6月的10％逐渐增加到2011年6月的总现场产量的50％。气体升力的地下挑战主要涉及成本降低的努力。 2008年2次钻探和完工改进到单行程气体举起完成，减少了〜1天/井（从总约7至6天/孔）减少了钻机时间。最初通过安装盘管气体升起的组件，最初通过安装燃气升降芯轴的现有生产者进行转换。随后在2010年安装了SLICKLINE REN跨跨量包装件瓶盖件的安装，以节省-73％的成本所示。就生产操作方面而言，适当的气体升降候选选择过程，办公室和海上之间的优异合作是成功的关键部件。除了气升注射速率优化之外，表面挑战主要与来自背压还原系统的气体升力源的优化相关，即远程压缩机（RC）和移动井卸载单元（Wuu）。 RC在后压减少和向生产者提供高压气体提升气体的作用。已经施加了几项努力，对RC单元优化和修改来最大化气体升程速率，例如RC间阶段被修改，以增加2至5 mmscf / d的气体升程速率，从而导致+500鲍普/升级的油增加/平台。 2011年5月，可以提供高压气体升力的改进的武力以恢复没有RC的平台，以通过+1,000个BoPD /平台的增量油提供燃气升力。在2011年Q2和Q4，调度了四个主要的气体提升平台以开始从气体供应管道注入气源，其中气体源从中央处理平台（CPP）提供。由于这四个平台上的天然气储备有限，我们从RC远离RC的汽提。随着持续的气体升力完成和运行创新，在地面和地下，适当的工作过程到位，所有人员的充分的气体升力培训，以及办公室所在主题专家（中小企业）和海上生产经营者之间的良好合作，燃气升力可能会显着延长井生命，肯定会增加复苏;因此，提高资产价值。

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