...) and desorption of absorbed hydrocarbon from rock surface. As surfactant has a foam tendency, it becomes an operation challenge to maintain the quality of crude and produced water in the production stream. This paper aimed to describe the operation troubleshooting experience involved in lab analysis and field...

... Abstract Foamed fracturing fluids offer an attractive alternative over conventional stimulation fluids, particularly in water-sensitive formations, to shorten the flowback period and energize the created fracture geometry. The thermal stability of foam at high temperatures is one of the main...

... Abstract Foam-assisted water-alternating-gas (FAWAG) or Enhanced WAG (EWAG) has been identified as one of the methods to improve WAG performance by reducing mobility of its gas phase through foam introduction, hence improving overall sweep efficiency. Foam generation in porous media has been...

... Abstract The foam improves heterogeneity of permeability in oil reservoir and contributes to enhancing oil recovery. Both surfactant and gas are alternatingly injected into oil reservoir in foam EOR, therefore, it has several challenges: high cost of surfactant, formation of precipitation with bivalent...

... as an inoculation source in the experiment. Abstract Both high cost and environmental load of surfactant are issues to be solved in foam EOR. Moreover, it is difficult to control the injection of surfactant and gas so that the foam is generated in only high permeable zones selectively in oil reservoir...

... eight stages of fracturing treatment in the lateral. Fracturing technology planned for the candidate well was strategized uniquely. It was decided to treat the lateral with three different treatment designs: hybrid slickwater fracturing, conventional fracturing with low polymer loading, and CO 2 foamed...

... such as an ever increasing lift gas demand and deteriorating lift gas utilization factor (GUF). To improve the gas lifting efficiency a pilot project utilizing foam to assist gas lifting was attempted. Based on a literature studies, foam assisted gas lift is expected to be able to reduce the gas lift consumption...

... The use of foam-based fracturing fluid was first introduced in the 1960s ( Mitchell 1969 ; David and Marsden 1969 ) and since then, it has been successfully applied across various formations. Nitrogen is the oldest foaming gas, and its use dates to 1960 ( Petty et al. 1964 ). The other gas...

... reservoir interburden rock chemical system solid issue CSG well brown foam stabilization treatment foam coal seam gas fluid return solid production chemical solution protective solution society of petroleum engineers Surat Basin Australia permeability Introduction Many coal seam gas...

... mobility control, gravity segregation, and viscous fingering, among others. Displacement conformance needs to be improved as to ensure that target regions are properly swept. To address these issues, foam has been proposed to complement the existing EOR applications, with the target to improve overall...

... Abstract Immiscible Water Alternating Gas (WAG) projects can be enhanced by using foaming surfactant in the water slugs with the objective to create viscous foam thereby improving the mobility ratio between gas and the liquid phases. The effective dynamic behavior of foam is complex...

...Conclusion Compared with currently used downhole sand control materials and the resultant Nickel foam after chemical modificationcan have excellent prospects in both sand control and oil/water separation. The new developed multifunctional nickel foam has superior properties in terms...

... has become more important. That’s why a new potential mechanical sand control screen based on the open pore metal foam material was developed. It’s featured by multi layers of different pore-sized metal foams to handle a larger range of particle size distribution, big flowing area with high...

... Abstract Water-flooding is a widely used recovery method of mature oilfields. In recent years, most of the mature oilfields are already at the medium-high even ultra-high water cut period due to water breakthrough and invalid water circulation. Air foam injection has been optioned as an EOR...

... improve oil mobility. However, there are some challenges such as poor sweep efficiency, low oil recovery due to viscous fingering and gravity segregation, and inefficient gas utilization in the field. CO 2 slug combined with surfactant slug will produce foam that will reduce gas mobility and block...

...Study of Foam System Concentrations of foaming agent and foaming stabilizer vs. foam volume and half foam life period The test shows ( Fig. 1-1-1 and 1-1-2 ) that, as the concentration of foaming agent increases, the foam volume doesn’t change greatly, and the half foam life period...

...Foam injection rate experiment The resistant coefficients under six different injection rates were tested out to get the optimum one (SD-4 system with gas fluid ratio of 1:1). From the test results (see table 2 ) we can see that resistance coefficient reaches maximum when injection rate...

... Abstract Many previous researches have proved that foam can increase the sweep efficiency and control gas mobility, and thus increase oil recovery. However, research on the effects of reservoir conditions such as the permeability, reservoir heterogeneity, formation rhythm and the viscosity...

... Abstract The influence of flow velocity and core heterogeneity on foam flow through porous media has been investigated with the aid of X-ray computed tomography (CT). The real time imaging of fluid partitioning, the saturation profiles extracted from the CT images and the pressure drops over...

... solution, the composition is: A 1.2%wt, S 0.3%wt and P 1200 mg/L. The interfacial tension of ASP is 5.6×10 −3 mN/m. The foam of ASP system is the foam system produced by ASP solution and natural gas. Results of Experiments and Comparison of Mechanism After water flooding, the configuration...