... performance of the first phase, the same surfactant with high foaming tendencies, high gas solubility, and low adsorption characteristics was implemented in the new patterns. In contrast to the first foam pattern, gas injectivity was reduced by 20 to 50% after only 2 foam cycles in the new patterns. Based...

... injection start-up, and they constitute the input data for the numerical reactive transport models. This workflow has been recently applied for different CCS project in Europe in which there is no evidence of a continuous brine source to the storage complex ( Ricci et al., 2021 ; Elgendy et al., 2021...

... injection into the annuli. Biomineralizing fluids were then pumped into the well, where they formed crystalline calcium carbonate in the micro annuli. After 1.5 days of treatment, the injection rate dropped by several orders of magnitude. Subsequent monitoring by a state regulator determined surface...

... Fresh water from Ping formation was utilized to in polymer preparation process. Utilizing low salinity, low solids content, and stable composition yields both cost and operational advantages. This included less polymer consumption, simple viscosity control, fewer injectivity issues, and decreased...

... ( Delamaide 2021 ). Hereby, the complex methods which involve multiple chemistries can be challenging to qualify as a suitable business case owing to the high costs of the injection chemicals ( Dean et al. 2020 ). Applicability of AP flooding has been confirmed on the laboratory scale for reservoirs...

... In this case study, the Burgan formation was targeted while drilling a new water-injection well in an onshore location. Burgan is composed primarily of siliclastics and is known to be a challenging formation due to lithofacies variation, lateral heterogeneity, and thickness variation, in addition...

... Reservoir cooling as a result of water injection is well known phenomena. Temperature decline originates at the injector and follows the path of the injection water at a distance behind the flood front ( Figure 3 ), arriving at producers well (in time) after water has arrived ( Van DeVerg et al...

... been commonly applied to high-BHST carbonate reservoirs but, its high viscosity, the high-pressure losses due to use of small tubing sizes, and the wellhead pressure limitation often limit the acid injection rate. Another drawback of using the DEA is the complicated emulsion mixing process...

..., to initiate an injection regime in the openhole section. The measured seepage (i.e. injection) in the formation is of 1 bpm (0.5 bpm from each half sections), as per natural formation injectivity. The differential rates are closely monitored with Coriolis metering at inlet and outlet. The inlet fluid...

.... The horizontal wells have been plagued with problems of high fracturing pressures, low injectivity and premature screenouts. This paper describes a comprehensive analysis performed to understand the reasons for these difficulties and to determine how to improve the perforation interval selection criteria...

... Abstract Matrix acidizing is a common but complex stimulation treatment that could significantly improve production/injection rate, particularly in carbonate reservoirs. However, the desired improvement in all zones of the well by such operation may not be achieved due to existing...

... Abstract Water-alternating-gas (WAG) injection, both miscible and immiscible, is a widely used enhanced oil recovery method with over 80 field cases. Despite its prevalence, the numerical modeling of the physical processes involved remains poorly understood, and existing models often lack...

... during water injection. This proppant technology has been described previously ( Palisch et al. 2014 , 2015 ) and has been deployed in multiple applications around the world ( Saldungaray and Palisch 2018 ; Hoq et al. 2018 ). It consists of three key characteristics—an extremely round and smooth...

...Experimental setup Abstract Polymers have been successfully deployed in the oil&gas industry in various field implementations, including mobility control in waterflood, flow divergence, and well conformance control. However, lab and field applications of polymer injections often...

... Abstract Improved field management for monitoring, estimating zone productivity/injectivity, and controlling wells with intelligent completions can broaden application of advanced well designs. We have developed a coupled Simulation-Surface Network modeling workflow to evaluate the potential...

... Abstract Several field cases reported that polymer injection in a horizontal well is a viable solution to increase oil recovery. The injectivity, however, may vary significantly depending on fluid, reservoir, and geomechanical conditions. Polymer injection without understanding these factors...

... In preparation for a field pilot of cyclic solvent injection (CSI) on two depleted cold heavy oil production with sand (CHOPS) wells, a series of oilsands coreflood experiments were conducted to evaluate the effectiveness of various commercially available solvents and make a solvent recommendation for the pilot...

... The testing device used in this study was built to compress suspensions of fine-grained solid particles in 3% wt KCl brine. The solid particles were prepared to represent common contaminants in injection waters targeting specific particle sizes for each type of solid. Table 1 presents the solid...

.... A comprehensive suite of scenarios and parameters has been analyzed that affect water disposal. Prognosis based on this study will lead to safe water-disposal operation without the adverse effect. A suite of reservoir models involving water injection helped understand disposal-well performance. The well...

... There are two basic techniques in gas injection – continuous (straight) gas flooding and water-alternating-gas (WAG) injection. The WAG injection was proposed to improve sweep efficiency of gas injection, with water being used for mobility control, and stabilizing the displacement front...