现场/项目开发

遥测方法可在地质灾害中实现最佳井位

本文讨论了北海和加利福尼亚近海的案例,其中高保真压力和动态测量与高速遥测相结合,有助于克服复杂的岩土工程挑战。

图1-显示损失区的井剖面。GOC = 气/油界面;FWL = 自由水位
图 1 — 显示损失区的井剖面。GOC = 气/油界面;FWL = 自由水位。
来源:SPE 219627。

全球范围内,有线钻杆(WDP;高速遥测)、沿钻柱测量(ASM)和先进的随钻测井(LWD)工具已在全球多个油井中部署,以应对其他技术通常无法克服或替代技术可能无法获得最佳效果的特定挑战。完整的论文探讨了高保真压力和动态测量与高速遥测相结合的应用案例,这些应用案例用于应对低覆盖层、页岩反应性和岩溶储层等复杂的岩土工程挑战。

介绍

在多家运营商的全球作业中,一些现代化且非常简单的钻机配备了地面接口和高速有线网络。该系统的关键组件包括有线井底钻具组合(包括随钻测井和接口短节)。这允许以接近内存质量的流式传输地层评估数据,具体取决于工具固件。

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Field/project development

Telemetry Approach Enables Optimal Well Placement Despite Geohazards

This paper discusses cases from the North Sea and offshore California in which high-fidelity pressure and dynamics measurements, combined with high-speed telemetry, helped overcome complex geotechnical challenges.

Fig. 1—Well profile showing loss zones. GOC = gas/oil contact; FWL = free water level
Fig. 1—Well profile showing loss zones. GOC = gas/oil contact; FWL = free water level.
Source: SPE 219627.

Wired drillpipe (WDP; high-speed telemetry), along-string measurements (ASMs), and advanced logging-while-drilling (LWD) tools have been deployed in multiple wells worldwide to address specific challenges that typically have been either insurmountable with other techniques or likely to experience suboptimal results with alternative technologies. The complete paper discusses use cases in which high-fidelity pressure and dynamics measurements, combined with high-speed telemetry, were used to address complex geotechnical challenges such as low overburden, shale reactivity, and karstified reservoirs.

Introduction

Across global operations with multiple operators, several modern and very simple rigs have been equipped with surface interfaces and a high-speed wired network. Key components in the system include the wired bottomhole assembly, including LWD and an interface sub. This allows streaming of formation evaluation data at approximately memory quality, depending on tool firmware.

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