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Keywords: polymer
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Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174175-MS
... over the last few years. Oil-based or synthetic-based drill-in fluids can meet temperature requirements easily, but are often not desirable for drill-in applications. Brine-based drill-in fluids usually use bio-based polymers as viscosifiers, but they are not suitable for high temperature applications...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174169-MS
... approaches have been used to prevent these losses. The most common is viscous fluid-loss control pills with sized particulates, such as calcium carbonate, which often requires a further treatment to remove the solids. An alternative is a solids-free crosslinked viscous polymer pill, which must be spotted and...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174225-MS
... Abstract The main objective of the laboratory and field studies was to develop an efficient and flexible reservoir conformance control (RCC) technology through improvement of the standard silicate method with joint application of "liquid” polymer and nanoparticle (silica) suspension. Similarly...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174210-MS
... meet challenging Oil and Gas rheological performance targets focusing on high temperature efficiency, associative polymers are here prepared using the Micellar polymerization process. This process consists of the aqueous polymerization of hydrophilic monomers in presence of micelles containing...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174232-MS
... MPa. Abstract Polymer injection into unconsolidated sand-packs saturated with either brine or model medium-heavy oil was investigated using a bore-hole simulator (BHS). The high-pressure vessel of this apparatus enables fluid injection under radial or spherical flow regimes into porous...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174228-MS
... brine. Also the effect of increasing cesium formate concentrations on xanthan T m was examined again in detail to see if the original results obtained by Shell Research in 1995 ( Howard, 1995 ) were reproducible. Lastly, and most importantly, a number of well-known antioxidants and polymer...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174279-MS
... water sample. Samples of the micro-emulsion, brine, HEC/XC-polymer and cement slurry filtrate were generated in the laboratory based on the field job proposal recipe (see Tables 1 & 2 ). The mix water and cement filtrate were evaluated for their density, pH while the crude/emulsion samples were...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174280-MS
... conventional one showed higher friction reduction than 0.25 gpt. Sun and coworkers investigated a novel synthetic polymer ( Sun 2010 , Sun 2013 ). The polymer shows fast hydration to allow almost instantaneous viscosity generation and adjustment. It also incorporates easily breakable linkages in its...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165091-MS
... application of a unique RPM system developed for water control. This RPM system is based on a hydrophobically modified water soluble polymer (HRPM) that, once adsorbed to the surface of the rock, selectively reduces water effective permeability with little to no damage to oil or gas production. The...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165130-MS
... this viscosity is typically achieved by cross-linking polymer solutions. Slickwater fracturing, different from fracturing using cross-linked fluids, has been developed and used in tight gas sand reservoirs since successful operations in the Cotton Valley Sand in East Texas in 1997. Because of the...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165096-MS
... increase in downhole temperature due to the polymer crosslinking at elevated temperatures. The formulation will be gelled completely when the crosslinking of the polymer reaches a certain value ( Fig. 5 (b) ). Table 2 shows the minimum time required to convert the formulation into a gel at different...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165105-MS
... to phase j at Sj saturation condition after treatment application As schematically shown in figure 1 , RPMs are polymeric branched solutions and most of them use branched organic polymers of high molecular weight. Branches are preferably hidrophilic and the polymer contains ionic groups...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165176-MS
... Fig. 4 Effect of polymers and alcohol concentration on surface tension (alcohol = methanol, c p = 0.5 g/l, t = 30 °C) It has been shown by numerous papers in the past decades that the reversible expansion/contraction of polymer coils can be utilized for selective restriction of...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165168-MS
... the water sensitive shales. However, polymeric shale stabilizers are not without potential detriments. Polymers can lead to formation damage by blocking pore throats and reducing permeability. Additionally, the use of cationic polymers can limit the use of other chemical compounds used in treating...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165191-MS
... system is discussed that provides high differential pressure for the fluid flow by forming a low-permeability filter cake on the formation face or bridging the perforation tunnel, or by plugging pore throats, which helps divert fluid to other zones. The system consists of degradable polymer particulates...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-143042-MS
... drilling fluid selection and formulation acidizing polymer well control drilling fluids and materials upstream oil & gas perforated foot aqueous fluid drilling fluid chemistry hydraulic fracturing drilling fluid formulation injection pressure application leakoff control fluid...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-143643-MS
... enhanced recovery upstream oil & gas concentration regular acid complex reservoir carbonate reservoir pressure drop acid injection waterflooding polymer residual oil saturation acidizing breakthrough acid wormhole in-situ gelled acid propagation injection rate acid...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-143785-MS
... have a number of properties – controlled leak off into the formation, minimal residual (polymer) damage in the matrix and proppant pack and low friction pressures while being pumped. However, the design methodology used to fracture high permeability formations is very different from that used to...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-143725-MS
...-degradation, molar dC Bs is breaker consumption on polymeric sugars, molar. The rate law for polymer links consumption is given in Eq. 9 : (9) d C L d t = − d C L T d t − d C L B d t = − R T C L − E B ( d C B S d...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-143929-MS
... of polymer based viscosifiers. It easily breaks at low pH and readily flows back during production. It leaves the least amount of polymeric residue when broken, but little polymer residue may stay behind which can cause some formation damage. There is also some experimental evidence that...

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