... Abstract The instant paper relates to the successful water shut-off treatment in heavy-oil fields of India through squeezing polymer into the gravel pack completion well. Santhal and Balol are heavy oil fields with viscosities ranging from 50 cp-1500 cp, API gravity 16-17°, permeability 3-5...

... of carbon footprint reduction opportunities. Modern logging technologies are able to accurately characterize the formation and measure its production behavior. Polymer injection technologies have the potential to significantly reduce water cut, thereby helping to optimize the carbon footprint. We evaluated...

... in the laboratory after comprehensive studies and its proper placement in the reservoir by designing of well specific job plan. In polymeric gel system, crosslinking reaction occurs wherein, a low viscosity solution containing polymer (PHPA) and cross linkers (HA & HQ), called Gelant is converted...

... injector I3 and producers A1, I1 as well as A5 are relatively high, which is an indication of a potential thief zone. Primary slugs of gel injection are designed for all injectors with channeling effects. The CMOST evaluation results show that the optimal formula of strong primary slug is polymer...

.... To control the permeability effect, the mud system was designed to have very low fluid loss properties (comparable with SBM) by using a blend of various fluid loss reducing polymers. Having low fluid loss was also beneficial in controlling the differential sticking and loss circulation risks due...

... chemical EOR candidate. Due to higher reservoir temperature (>100°C) it is always challenging to develop a surfactant-based chemical EOR solution due to pronounced issues in chemical compatibility. For any economical surfactant-based chemical EOR process an optimized surfactant or surfactant-polymer...

... good results in terms of sand production reduction and preservation of well performances. The polymer adsorbs strongly on the reservoir rock, forming a continuous film on pore walls. The film has a consistency of thin sticky gel stabilizing the rock. Moreover, the polymeric film acts as Relative...

... additives [ 11 ]. Polyvinyl Alcohol (PVOH) is a manufactured polymer that is essentially made from polymerized vinyl acetate [ 12 ][ 13 ] and partial hydrolysis where vinyl acetate is replaced by highly hydrophilic hydroxyl group (OH-), amplifying the sorption characteristic of PVOH at every additional...

... stage of recovery on several EOR target layers. It was previously identified after several studies and reviews of historical data as a potential candidate for chemical EOR. In the current paper chemical EOR method of injecting surfactant-polymer (SP) formulation to extract additional crude oil...

... to achieve maximum viscosity of the respective fluid. Abstract Hydraulic fracturing, commonly referred to as fracking, is a widely used technology to enhance the productivity of low-perm reservoirs and the aqueous-based fracturing fluids use guar as the rheology builder. Residual polymer layer over...

... Abstract Polymer flood is proved an effective method for EOR in China. Traditional segmented polymer injection technique cannot obtain continuous layer parameters. Real-time monitoring is necessary for polymer flood because downhole pressure and flowrate vary more often than waterflood...

.... Microspheres are polymeric balls with very stable crosslinked structure inside. The thermal and mechanical stability is better than the linear polymer. The particle size of the microsphere ranges from nano meter to micron, which is in the same level with the pore size of the target reservoir. All these make...

... Breakers Proppant-pack permeability can be severely damaged by polymeric gelling agents such as guar or its derivatives. The amount of damage increases as polymer concentration increases. Breakers are used to reduce the viscosity of the fracturing fluid by degrading the polymer that is concentrated...

... Abstract Block-X Oilfield in Bohai Bay (China) is a typical offshore heavy oil reservoir, which has an oil viscosity of 24-452 mPa·s, an average porosity of 31% and stronger permeability heterogeneity (average 2000 mD). Before polymer flooding, over 10 years water flooding achieved a recovery...

... Abstract Polymer flooding is a mature Enhanced Oil Recovery process which is used worldwide in many large- scale field expansions. Encouraged by these positive results, operators are still looking at applying the process in new fields even in the context of low oil prices and are evaluating its...

... fingering patterns with tip-splitting or suppressed tip-splitting and side-branching. This difference was attributed to different interactions between the modified NP and the polymeric chains of the two polymers. The areal sweep efficiency of the HPAM polymer solutions did not improve by the addition...

.... drilling fluid chemistry drilling fluid formulation high performance stability stress direction drilling fluid selection and formulation drilling fluids and materials Upstream Oil & Gas polymer calcium carbonate particle filtrate graphite overbalance drilling fluid property wellbore...

... In the case of synthetic polymers, specialty monomers such as AMPS can be added to the chain to improve its salt resistance, thermal, and shear stability ( Sigale and Omari 1997 ). This has been investigated by many authors using different terpolymers involving AMPS and has been shown to help...

... to minimizing the destabilization of these high-clay-content formations. An ultralow molecular weight cationic organic polymer (PC-4) was spearheaded into the reservoirs to provide long-term water-sensitivity protection by rendering water-swelling clays insensitive to changes in water salinity; this process...

... based on previously completed methodologies and observed production declines. A two stage vertical well was selected for proof of concept. The original completion used a 5 ½-in. casing, applying multi-stage sand jetting fracturing. The application of the gelled polymer system for re-fracturing utilized...