Cyclic Water Injection Simulations for Evaluations of its Potential in Lagocinco Field

Stirpe, Mario; Guzmán, Jessica J.; Manrique, Eduardo; Alvarado, Vladimir

doi:10.2118/89378-ms

Cited by 16 publications

(5 citation statements)

References 17 publications

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“…Therefore, an optimum injection frequency, 100 Hz, is revealed via the numerical model for enhanced oil recovery. At the optimum injection frequency, the oil recovery is enhanced by 9% compared with that upon the water injection without an oscillatory boundary, which is consistent with the highest EOR obtained from a conventional reservoir reported in the literature [26,27,29].…”

Section: The Critical Frequencysupporting

confidence: 88%

“…They solved the model numerically and predicted the EOR of the field in 5 years ranging from 3% to 8%. Stirpe et al [27] constructed a three-dimension black oil model by using the parameters extracted from the Lagocinco Field. They used the model to calculate and predict the EOR performance for diverse cycles, pressure and well spacing by adopting the CWI.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation on EOR in Porous Media by Cyclic Water Injection with Vibration Frequency

Yang

Lao

Tong

et al. 2022

Water

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Water injection with an oscillatory pressure boundary is a promising technology, which can achieve a more economical and environment-friendly EOR (enhanced oil recovery). However, due to the unclear critical injection frequency, its oil production performance has been unstable and is far from reaching the optimal level. Here, a numerical model is established for oil recovery by the water injection with the oscillatory boundary condition to find out the critical frequency for the optimal EOR. The correlations between the water injection frequency and the EOR level at diverse oil–water surface tensions and oil viscosities are integrated into the model. Our numerical model reveals that an optimal EOR of roughly 10% is achieved at the critical water injection frequency compared with water injection without an oscillatory boundary. The EOR mechanism is revealed showing that upon water injection with the optimum frequency, the formation of the preferential pathways is inhibited and the pressure transmits to the wall sides to displace the oil. Moreover, it is indicated that the required critical frequency increases with higher surface tension and larger oil viscosity. In addition, the difference between the residual oil saturation at the optimal frequency increases with the increase in surface tension compared with water injection without an oscillatory boundary. Last but not least, it is elucidated that at a constant injection frequency, a higher EOR is achieved when the water–oil surface tension is lower but the oil viscosity is larger. Our work promises economic, eco-friendly and controllable enhanced oil recovery.

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Section: The Critical Frequencysupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on EOR in Porous Media by Cyclic Water Injection with Vibration Frequency

Yang

Lao

Tong

et al. 2022

Water

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“…The recovery performance of cyclic water flooding in conventional reservoirs has been demonstrated by lots of experimental and simulation studies as well as field practice reports (Li et al, 1995;Stirpe et al, 2004;Shchipanov et al, 2008;Surguchev et al, 2008). The concept of such cyclic injection is based on (1) pulsed injection and (2) alternating waterflood patterns.…”

Section: Introductionmentioning

confidence: 99%

A comparative experimental study of IOR potential in fractured shale reservoirs by cyclic water and nitrogen gas injection

Sheng

2017

Journal of Petroleum Science and Engineering

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Oil production from tight and shale formations accounted for more than half of total U.S. oil production in 2015 (EIA, 2016). Such amount is expected to grow significantly as the active development of low permeability reservoirs continues. Since the primary recovery is becoming less effective and large amounts of oil are locked in matrix, IOR techniques should be considered to face such challenge. Many recent studies have evaluated the potential of gas injection in shale plays. However, few studies discussed the feasibility of water huff-n-puff process. This study evaluated the potential of cyclic water injection (CWI) in shale plugs and compared it with the performance of cyclic gas injection (CGI). Eagle Ford core samples were used in this study and saturated with dead shale oil. X-ray diffraction (XRD) technique was employed to analyze the mineral composition of the sample. To reduce clay swelling, 5 wt.% of potassium chloride (KCl) solution was used as the injection fluid in CWI tests. Two groups of experiments were performed to examine the effects of soaking time and injection pressure (P in) on the recovery performance. For one cycle of huff-n-puff, after reaching the P in , the core plug was soaked with water for a certain time, then the surrounding pressure was released to enter the production period. Under the same operating conditions, CGI tests were conducted to compare the two IOR performances. The CWI experimental results show that soaking time affects the recovery factor (RF) of a single cycle within a certain range, which was similarly concluded from the CGI tests. Injection pressure can affect the recovery performance of CWI significantly. For example, after performing 12 cycles of water huff-n-puff, the RF for tests with P in of 1,000 psi and 5,000 psi were 14% and 21%, respectively. When applying 5,000 psi, fractures were created on the plug and the size enlarged with further cycles operated. Comparing the two processes of CWI and CGI, different recovery characters can be observed. CWI showed the recovery potential at the first four cycles, and then the incremental oil recovery decreased dramatically in the subsequent cycles. By contrast, CGI presented a more continuous and steady recovery performance with high incremental RF, and then gradually diminished after seven cycles of huff-n-puff processes.

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“…In light of these challenges, both domestic and international scholars have conducted extensive research on technical and numerical simulation methods for layer division, layer recombination, and chemical profile control [16][17][18][19][20][21][22][23]. Subdivision-based stratigraphic recombination plays a vital role in reducing differences between reservoir layers and achieving balanced development in multilayer reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Study on the Countermeasures and Mechanism of Balanced Utilization in Multilayer Reservoirs at Ultra-High Water Cut Period

Wang,

Jiang,

Wang

et al. 2023

Processes

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After entering the ultra-high water cut stage of multilayer oil reservoirs, the remaining oil is highly dispersed. Due to the continuous development of general water injection, the generation of advantageous channels makes interlayer contradictions more prominent, and the differences in the utilization between different layers are even greater. After the water drive development of multilayer oil reservoirs enters the ultra-high water cut stage, the development effect deteriorates year by year. Layer restructuring is an effective method of improving the water injection development effect and increasing the degree of utilization. In essence, its goal is to achieve balanced utilization for multiple development layers to increase the degree of recovery. This article mainly employs physical simulation experiments combined with reservoir numerical simulation technology to jointly study the effects of different equilibrium production strategies in the ultra-high water cut period of multilayer oil reservoirs and their mechanism of action based on the remaining oil distribution field and streamline field. As a specific implementation, we use large-plate physical simulation to demonstrate the effectiveness of the rotational injection and production strategy, and to supplement the physical simulation experiment with a reservoir numerical simulation model, we analyze the mechanism of different balanced production strategies. The research results for the combination of physical simulation experiments and numerical simulation experiments show that the combined strategy of rotary injection and rotary production is the most effective method for use in multilayer and ultra-high water cut oil reservoirs. The displacement effect of the high-permeability layer is better, and the increase in the recovery degree is relatively large, while the displacement effect of the low-permeability layer is relatively weak. After conventional water drive oil recovery, the remaining oil mainly exists in the edge area of the research area. However, the use of three-dimensional well network injection wheel recovery changes the streamline field, produces the effect of fluid flow diversion, expands the water drive sweep coefficient, and improves the recovery rate. Chemical plugging can effectively replace water drive oil recovery and will become the main method for improving the recovery rate of such reservoirs in the lower part.

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Cyclic Water Injection Simulations for Evaluations of its Potential in Lagocinco Field

Cited by 16 publications

References 17 publications

Numerical Investigation on EOR in Porous Media by Cyclic Water Injection with Vibration Frequency

Numerical Investigation on EOR in Porous Media by Cyclic Water Injection with Vibration Frequency

A comparative experimental study of IOR potential in fractured shale reservoirs by cyclic water and nitrogen gas injection

Study on the Countermeasures and Mechanism of Balanced Utilization in Multilayer Reservoirs at Ultra-High Water Cut Period

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