... was discarded due to lower viscosities of oil of the order of ~0.45 cp. Consequently, miscible gas process was evaluated as a more suitable EOR mechanism for Mumbai High field. Laboratory studies indicated that the oil recovery with miscible gas injection was indeed higher; however, the minimum miscibility...

... already gone through this optimization process with expected gains up to two hundred million barrels of additional oil recovery. A balance between audacious strategies for project and profit acceleration and flexibility strategies for path correction and optimization has been fundamental...

... Abstract Polymer flooding is very promising chemical enhanced oil recovery technique because it has been widely field tested in many oil fields and commercially applied in several countries in onshore reservoirs. The understanding of polymer flooding mechanisms is still developing, even though...

...) process functions to enhance oil recovery by placing vertical gas injectors at the top of the reservoir combined with a series of horizontal wells located in the lower part of the reservoir for oil and water production. The injected gas accumulates to form or enhance a gas cap, while oil and water drain...

... largely increased, and the optimal recovery period of polymer flooding was extended greatly, especially for the heterogeneous formations. Therefore, the rheology type of polymer plays a significant role in the incremental oil recovery and injection profile of the horizontal well system given the pilot...

...Introduction and Background The attention for enhanced oil recovery (EOR) methods is increasing due to the currently global energy demand. About two thirds of the original oil in place (OOIP) is left behind after primary and secondary recovery techniques and is considered as a target for EOR...

... Abstract For decades, polymer flooding proved to be one of the most effective enhanced oil recovery (EOR) methods. In addition, low salinity/engineered water injection (LSWI/EWI) has been gaining momentum over the last few years. Both techniques seem to be cheaper than other EOR methods...

..., and the production rate declined rapidly. To further improve the oil recovery, research is carried out for optimization of the replacement production method. First, the reasons for gas breakthrough are analyzed. Potential methods are all analyzed and compared by reservoir simulation and physical experiments...

...Abstract Abstract Enhanced oil recovery (EOR) and maximizing recovery from declining production fields remain a challenge in the offshore industry. The challenge is to find an EOR method that is both technically and economically feasible considering the high capital and operating costs...

... Two major challenges in CO 2 enhanced oil recovery (EOR) are the high mobility of CO 2 and reservoir heterogeneity. High CO 2 mobility, related to the low density and viscosity of CO 2 , compared to in-situ fluids can cause viscous fingering, gravity override, and flow in thief zones...

...OTC-30601-MS Potential Oil Recovery Enhancement by a Polymeric Nanogel Combined with Surfactant for Sandstone Reservoirs Mustafa Mohammed Almahfood, Saudi Aramco Missouri University of Science and Technology; Baojun Bai, Missouri University of Science and Technology Copyright 2020, Offshore...

... and high-strength foam, respectively), this simulation study reveals the following findings. First, compared to gas-water injection with no foams, injection of foams can improve cumulative oil recovery and sweep efficiency significantly. Such a tendency is observed consistently at three high, intermediate...

... million gridblocks with sufficiently small gridblock sizes to ensure physical accuracy. Four case studies of polymer flooding and surfactant-polymer flooding are presented. The grid sizes range from 800,000 to 3.7 million gridblocks. The incremental enhanced oil recovery is illustrated by comparison...

...Abstract Abstract Surfactant Chemical EOR is a proven technology to increase oil recovery with several successful field trials. Offshore trials are less frequent due to the complexity of operations and also because of the limited availability of suitable chemicals adapted to sea water...

... and which drivers were and were not considered during the decision making process. gas lift oil recovery subsea system reduction in-well gas lift fluid temperature capex flowline subsea processing hydraulic jet pump recovery subsea production equipment differential pressure offshore...

...Abstract Abstract CO 2 injection to improve oil recovery has been successfully implemented in many oil reservoirs worldwide for almost half century. Conventional CO 2 injection strategies, such as continuous CO 2 flooding, water-alternating-gas (WAG) or carbonated water injection (CWI), were...

... reservoirs and increase the recovery factors beyond primary depletion by implementing improved and enhanced oil recovery (IOR/EOR) methods. This paper presents detailed review of the advances in IOR/EOR technologies applied to unconventional oil reservoirs. A thorough review of the pertinent published...

... start for the design of any field measurements including EOR pilot operations. concentration numerical model oil recovery simulation laboratory measurement upstream oil & gas capillary end effect experiment relative permeability flooding injection reservoir calibration saturation...

... Abstract In surfactant flooding for enhanced oil recovery, adsorption of surfactants on the porous media of an oil reservoir is a major concern. It weakens the efficacy of the injected surfactant in reducing oil–water interfacial tension (IFT) and makes the oil recovery process uneconomical...

... for improved field economics with a greater ability than ever before to maximize profit by increasing the oil recovery and reduce the total production time by, in some cases, several years. This has demonstrated to provide considerably improved net present value since the oil production peaks out years earlier...