... The following rational was used to design the treatments at the Hardwicke-University Unit. Whenever the desire is to sweep SPE 59528 Injection-side Application of MARCIT Polymer Gel Improves Waterflood Sweep Efficiency, Decreases Water-Oil Ratio, and Enhances Oil Recovery in the McElroy Field, Upton County...

... of Marcit SM gels were injected in each of two adjacent injection wells. Seven months after the Marcit gel treatments, the operator began a colloidal dispersion gel (CDG) pilot in the same two patterns, injecting a total CDG pore volume of approximately 18% in certain layers of the Comodoro Rivadavia...

... performed. From 1980 to 2013, there were a total of 110 patterns where conformance controls were executed primarily utilizing MARCIT SM gel. To have an objective definition of success or failure, a Spotfire® dashboard was created to systematically compare incremental oil production and decline rates before...

...Fig. 5B Post MARCIT sM treatment schematic illustrating the ability to increase reservoir drawdown with a substantial reduction in water production. ...

... several field projects in four hydrocarbon basins in Argentina and Venezuela are described based on the application of two available polymer gel technologies: Marcit℠ and Unogel. The types of reservoirs and reservoir conditions where polymer gels have been successful, and unsuccessful, are illustrated...

...Figure 13 Formed MARCIT Gel ...

... increase of polymer concentrations are used to optimize the gel plugging efficiency. In addition, small volumes of cement or low molecular weight, fast-maturing, rigid gels are injected in front (only gels) or behind the MARCIT SM gels as capping materials. The unsuccessful gel pilots had significantly...

... control) strategies to optimize offshore waterfloods. Abstract Chemical EOR technologies used offshore can either be short term reservoir conformance treatments such as Marcit Gels for near-wellbore and BrightWater® for in-depth permeability modifications or long term floods such as mobility control...

... in producer wells five months after gel injection with 26,850 incremental barrels of oil. The PLT logs showed evidence of plugging of thief zone in the U3 sand and redirection of water to U2. Polymer Gel System Used in the Pilot Test The commercial polymer gel system MARCIT sm , used in the pilot test...

... for permeability modification (e.g. MARCIT) may not have sufficient strength to block big fractures and "wormholes" found in heavy oil reservoirs. The polymer gels formulated for total zone isolation (e.g. MARA-SEAL) have sufficient mechanical strength but may invade deeply into the pay zone. The polymer invading...

... El Tordillo Field (Argentina) represents one of the fields with the largest number of CDG treatments (11 wells). Reported incremental oil recoveries are between 3 and 3.5% of the OOIP ( Menconi et al. 2013 ). However, CDG injection was combined with MARCIT sm gel treatments to control severe...

... historical pressure during waterflooding in order to keep the gelant flowing under the same conditions it had when breakthrough happened. Field Implementation The Marcit gel was injected in different stages of increasing concentration in the four candidate wells. Even all treatments were pre-designed...

...Fig.12 Schematic sketch of the AK41 injector before the Marcit treatment Permeabilities of the different layers and PLT data are also presented. ...