Innovative Progressive Cavity Pump Design for Brown Fields in South of Oman

Shukri, M.; Abou-ElKhair, Abdel-Monaim

doi:10.2118/126049-ms

Cited by 3 publications

References 7 publications

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First Application of Progressive Cavity Pumps for Appraisal Well Testing in the Ugandan Albertine Graben Basin

Sathyamoorthy¹,

Steyn²,

Mcgilvray³

et al. 2012

All Days

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Over 28 production well tests and 2 interference tests have been conducted in the Albertine Graben Basin in Uganda since the first oil discovery in 2006. The Uganda crude is moderately viscous, low GOR and later discoveries were mostly in shallow lower energy systems. In addition, Uganda crude has relatively high pour points and Wax Appearance Temperatures which result in flow assurance challenges during production testing operations. Production challenges brought about by the low energy scenario is offset by high formation permeability (mostly in the multi-Darcy range). Field X was discovered in 2008 by Well X-1, and subsequently appraised by several wells. Zone 1 of Well X-1 was production tested under natural flow without a rig. Although hydrocarbons were brought to surface successfully during the testing operation, the maximum flow rate achieved was ca. 262 BOPD, and a stable flow rate could not be sustained. Fluid segregation effects distorted the early time data. In addition, flow assurance challenges prevented acquisition of late time response from the Pressure Build-Up (PBU). Therefore, important dynamic information, particularly with regards to flow barriers, was not obtained. A change in completion philosophy was proposed after detailed analysis of the test results. Well X-1 was re-tested with a new completion design incorporating real-time Surface-Read-Out (SRO) pressure and temperature monitoring capability, a hydraulically controlled Inflow Control Valve (ICV), a Progressive Cavity Pump (PCP) and a surface controlled electrical heat trace system. High quality well test data was acquired and the real time data was used extensively throughout operations to optimize flow and build-up periods, and well operating envelopes. Several challenges were faced during the first completion run leading to the use of the contingent insert PCP system to re-test Zone 1. This paper highlights the first application of a PCP completion in Uganda, and describes the challenges faced during the completion and well testing operation. The experience from Well X-1 has demonstrated that high quality exploration and appraisal well test data can be acquired using a PCP completion. Similar well completion designs will be utilized in Uganda for appraisal of other discoveries.

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First Application of Progressive Cavity Pumps for Appraisal Well Testing in the Ugandan Albertine Graben Basin

Sathyamoorthy¹,

Steyn²,

Mcgilvray³

et al. 2012

All Days

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First Application of Progressing Cavity Pumps for Appraisal Well Testing in the Ugandan Albertine Graben Basin

Sathyamoorthy¹,

Steyn²,

Fuchs³

et al. 2013

SPE Production &Amp; Operations

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Summary Over 28 production well tests and two interference tests have been conducted in the Albertine Graben basin in Uganda since the first oil discovery in 2006. The Uganda crude is moderately viscous, and low-gas/oil ratio (GOR), and later discoveries were mostly in shallow lower-energy systems. In addition, Uganda crude has relatively high pour points and wax appearance temperatures (WATs), which result in flow-assurance challenges during production testing operations. Production challenges brought about by the low energy scenario are offset by high formation permeability (mostly in the multi-Darcy range). Field X was discovered in 2008 by Well X-1, and subsequently appraised by several wells. Zone 1 of Well X-1 was production tested under natural flow without a rig. Although hydrocarbons were brought to surface successfully during the testing operation, the maximum flow rate achieved was approximately 262 BOPD, and a stable flow rate could not be sustained. Fluid-segregation effects distorted the early-time data. In addition, flow-assurance challenges prevented acquisition of late-time response from the pressure buildup (PBU). Therefore, important dynamic information, particularly in regard to flow barriers, was not obtained. A change in completion philosophy was proposed after detailed analysis of the test results. Well X-1 was retested with a new completion design incorporating real-time surface-readout (SRO) pressure and temperature monitoring capability, a hydraulically controlled inflow control valve (ICV), a progressing cavity pump (PCP), and a surface-controlled electrical heat trace system. High-quality well-test data was acquired, and the real-time data was used extensively throughout operations to optimize flow and buildup periods and well operating envelopes. Several challenges were faced during the first completion run, leading to the use of the contingent insert PCP system to retest Zone 1. This paper highlights the first application of a PCP completion in Uganda and describes the challenges faced during the completion and well-testing operation. The experience from Well X-1 has demonstrated that high-quality exploration and appraisal well-test data can be acquired using a PCP completion. Similar well-completion designs will be used in Uganda for appraisal of other discoveries.

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Artificial Lift System Applications in Tight Formations: The State of Knowledge

Kolawole

Gamadi

Bullard

2020

SPE Production &Amp; Operations

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Summary The artificial lift (AL) system is the most efficient production technique in optimizing production from the unconventional horizontal oil and gas wells. Nonetheless, due to declining reservoir pressure during the production life of a well, artificial lifting of oil and gas remains a critical issue. Notwithstanding the attempt by several studies in the past few decades to understand and develop cutting-edge technologies to optimize the application of AL in tight formations, there remains differing assessments of the best approach, AL type, optimum time, and conditions to install AL during the life of a well. This report presents a comprehensive review of AL system application with specific focus on tight oil and gas formations across the world. The review focuses on over 35 successful and unsuccessful field tests in the unconventional horizontal wells over the past few decades. The purpose is to apprise the industry and academic researchers on the various AL optimization approaches that have been used and suggest AL optimization areas where new technologies can be developed.

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Innovative Progressive Cavity Pump Design for Brown Fields in South of Oman

Cited by 3 publications

References 7 publications

First Application of Progressive Cavity Pumps for Appraisal Well Testing in the Ugandan Albertine Graben Basin

First Application of Progressive Cavity Pumps for Appraisal Well Testing in the Ugandan Albertine Graben Basin

First Application of Progressing Cavity Pumps for Appraisal Well Testing in the Ugandan Albertine Graben Basin

Artificial Lift System Applications in Tight Formations: The State of Knowledge

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