Case Studies of the ROZ CO2 Flood and the Combined ROZ/MPZ CO2 Flood at the Goldsmith Landreth Unit, Ector County, Texas. Using ''Next Generation'' CO2 EOR Technologies to Optimize the Residual Oil Zone CO2 Floo

doi:10.2172/1224947

GSTDTAP > 地球科学

DOI	10.2172/1224947
报告编号	None
来源ID	OSTI ID: 1224947
	Case Studies of the ROZ CO₂ Flood and the Combined ROZ/MPZ CO₂ Flood at the Goldsmith Landreth Unit, Ector County, Texas. Using ''Next Generation'' CO₂ EOR Technologies to Optimize the Residual Oil Zone CO₂ Floo
	Trentham, Robert C.; Melzer, L. Stephen; Kuuskraa, Vello; Koperna, George
	2015-06-30
出版年	2015
页数	231
语种	英语
国家	美国
领域	地球科学
英文摘要	The technology for CO₂ Enhanced Oil Recovery (CO₂ EOR) has significantly advanced since the earliest floods were implemented in the 1970s. At least for the Permian Basin region of the U.S., the oil recovery has been now been extended into residual oil zones (ROZs) where the mobile fluid phase is water and immobile phase is oil. But the nature of the formation and fluids within the ROZs has brought some challenges that were not present when flooding the MPZs. The Goldsmith-Landreth project in the Permian Basin was intended to first identify the most pressing issues of the ROZs floods and, secondly, begin to address them with new techniques designed to optimize a flood that commingled the MPZ and the ROZ. The early phase of the research conducted considerable reservoir and fluid characterization work and identified both technical and commercial challenges of producing the enormous quantities of water when flooding the ROZs. It also noted the differing water compositions in the ROZ as compared to the overlying MPZs. A new CO₂ gas lift system using a capillary string was successfully applied during the project which conveyed the CO₂ to the deeper and differing ROZ reservoir conditions at Goldsmith and added a second capillary string that facilitated applying scale inhibitors to mitigate the scaling tendencies of the mixing ROZ and MPZ formation waters. The project also undertook a reservoir modeling effort, using the acquired reservoir characterization data, to history match both the primary and water flood phases of the MPZ and to establish the initial conditions for a modeling effort to forecast response of the ROZ to CO₂ EOR. With the advantage of many profile logs acquired from the operator, some concentration on the original pattern area for the ROZ pilot was accomplished to attempt to perfect the history match for that area. Several optional scenarios for producing the ROZ were simulated seeking to find the preferred mode of producing the two intervals. Finally, the project attempted to document for the first time the production performance of commingled MPZ and ROZ CO₂ EOR project at the nearby Seminole San Andres Unit. The analysis shows that over 10,000 bopd can be shown to be coming from the ROZ interval, a zone that would have produced no oil under primary or water flood phases. A similar analysis was done for the GLSAU project illustrating that 2000 bopd of incremental EOR oil is currently being produced. The results of the modeling work would suggest that 800 bopd can be attributed to the ROZ alone at GLSAU.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6819
专题	地球科学
推荐引用方式 GB/T 7714	Trentham, Robert C.,Melzer, L. Stephen,Kuuskraa, Vello,et al. Case Studies of the ROZ CO₂ Flood and the Combined ROZ/MPZ CO₂ Flood at the Goldsmith Landreth Unit, Ector County, Texas. Using ''Next Generation'' CO₂ EOR Technologies to Optimize the Residual Oil Zone CO₂ Floo,2015.