非常规/复杂油藏

将动态气体分离技术集成到SAGD装置中,以提高ESP性能

本文证明了将动态气体分离与现有的气体避免方法集成到同一台电潜泵组中,可以有效解决这些问题。

图 1——ESP 的回收检查和故障分析,显示 MLE 电缆熔化和泵壳绝缘层变色。
图 1——ESP 的回收检查和故障分析,显示 MLE 电缆熔化和泵壳绝缘层变色。
来源:SPE 230260。

蒸汽辅助重力泄油(SAGD)作业中的天然气生产面临诸多挑战,包括产量降低、电潜泵(ESP)运行寿命缩短以及生产不稳定。本文论证了将动态气体分离技术与现有ESP管柱内的气体规避方法相结合,能够有效解决这些问题。结果表明,本文所述的上串联式气体分离器(UT'H5S)技术为SAGD ESP应用中的气体管理提供了一种可靠高效的解决方案。

介绍

Suncor Energy旗下的Firebag油田采用原位开采法提取沥青,主要通过SAGD工艺。截至撰写本文时,该油田的沥青日产量超过23万桶。

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Unconventional/complex reservoirs

Dynamic Gas Separation Integrated Into SAGD for Improved ESP Performance

This paper demonstrates the effectiveness of integrating dynamic gas separation with existing gas-avoidance methods within the same electrical submersible pump string to address these issues.

Fig. 1—Post-retrieval inspection and failure analysis of the ESP showing melted MLE cable and insulation discoloration along the pump housing.
Fig. 1—Post-retrieval inspection and failure analysis of the ESP showing melted MLE cable and insulation discoloration along the pump housing.
Source: SPE 230260.

Gas production in steam-assisted gravity drainage (SAGD) operations presents significant challenges, including reduced production rates, shortened electrical submersible pump (ESP) run life, and unstable production. The complete paper demonstrates the effectiveness of integrating dynamic gas separation with existing gas-avoidance methods within the same ESP string to address these issues. The results indicate that the described technology, an upper-tandem gas separator (UT‑GS), provides a reliable and efficient solution for gas management in SAGD ESP applications.

Introduction

Suncor Energy’s Firebag uses in-situ recovery for bitumen extraction, primarily through the SAGD process. At the time of writing, this operation achieves a production rate of over 230,000 bbl of bitumen per day.

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