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Keywords: matrix
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Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174198-MS
... the effects of temperature, permeability, flow velocity, and acid type and concentration on the wormhole propagation rate. Abstract Success in matrix acid stimulation of carbonate formations depends largely on the acid distribution and the created wormhole length. Treatment design is still as...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174270-MS
... scale inhibitor (SI) along the wormholes, and into the matrix. In this study the same approach adopted by Furui and co-authors is adopted ( Furui et al., 2012 ), where the wormhole pattern is highly symmetrical in a homogenous and isotropic formation. Carbonate reservoirs are commonly...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174246-MS
... conformance sealant (SPCS) system for water and gas control applications. This system combines an organically crosslinked polymer (OCP) gel system with fluid-loss control additives and noncement particulates. The additives/particulates provide leakoff control properties, which can lead to shallow matrix...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165082-MS
... (1) S f s = π b s 2 X f ( K K s − 1 ) Adegbola and Boney (2002) presented a relationship between the fluid loss and viscosity of a fracturing fluid invading the fracture-face matrix and the resulting fracture-face skin. The distance that a fracturing...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165091-MS
... system water cut reservoir flow in porous media perforated interval History reduction wellbore application produced water management and control HRPM treatment pay zone matrix production rate water production permeability gas production formation evaluation wellbore schematic radial...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165100-MS
... important issue when flow paths or pressure drop are important to fluid placement. This work addresses the implementation of an empirical wormhole propagation model on a CFD software. We have two goals: the simulation of different pumping strategies for matrix acidizing treatments aiming acid placement...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-143788-MS
..., producing heavy crude. Gravel packing is required to avoid sand production. However, the Productivity Index after conventional gravel packing is only 50% of the open-hole potential due to drill-solids—calcium carbonate —plugging the matrix and fines migration. Non-acid and acid based preflushes have been...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-143777-MS
... formation. Mud acids, blends of hydrofluoric acid (HF) and hydrochloric acid (HCl), and organic mud acids, blends of HF acid and acetic acid (C 2 H 4 O 2 ) or formic acid (CH 2 O 2 ), have been used in matrix acidizing treatments of siliceous clay-containing formations for many years to improve productivity...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-144114-MS
... Ineffective fracture cleanup is considered as one of the most widely accepted reason of the unsuccessful hydraulic fracturing job. Cleaning fracture fluid from matrix and fracture is a complex process and controlled by many parameters. To date, many numerical and experimental studies have been...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, June 7–10, 2011
Paper Number: SPE-144803-MS
... system, but generally those solutions represent an economical impact that makes the matrix stimulation in mature fields almost inaccessible. When low-viscosity treating fluids, such as acid, are injected into the matrix of the formation below the fracturing pressure, there is a tendency for the...
Proceedings Papers

Paper presented at the 8th European Formation Damage Conference, May 27–29, 2009
Paper Number: SPE-121916-MS
... flow in porous media hydraulic fracturing viscosity Holditch matrix Upstream Oil & Gas cleanup efficiency reduction fracture permeability fracture ff invasion gas production Permeability reduction saturation invasion Modeling & Simulation Fluid Dynamics relative...
Proceedings Papers

Paper presented at the 8th European Formation Damage Conference, May 27–29, 2009
Paper Number: SPE-121865-MS
... at which the curve of concentration reaches zero could be considered to represent skin radius caused by drilling operation. Similarly the position in lateral direction at which the concentration reaches zero represents lateral penetration of the drilling fluid in the matrix from its corresponding...
Proceedings Papers

Paper presented at the 8th European Formation Damage Conference, May 27–29, 2009
Paper Number: SPE-122357-MS
... flow in porous media carbonate reservoir vug Upstream Oil & Gas concentration pressure drop experiment complex reservoir Fluid Dynamics heterogeneity flow direction matrix porosity wormhole PVBT acidizing breakthrough Vuggy Carbonate connectivity flow path dispersion...
Proceedings Papers

Paper presented at the European Formation Damage Conference, May 30–June 1, 2007
Paper Number: SPE-107296-MS
... dissolution matrix acid system brazil producer single step matrix formulation Abstract For over 50 years, mixtures of hydrochloric and hydrofluoric acids have been used for the removal of near-wellbore damage in sandstone formations. Such mixtures dissolve many siliceous minerals, including clays...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 25–27, 2005
Paper Number: SPE-95022-MS
... rock matrix.However, for short inter-well distances, such as may occur in onshore developments, and where fracture conductivity is high enough that inhibitor contact with the matrix rock is minimal, then this technique can provide adequate protection against scale induced formation damage in production...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 25–27, 2005
Paper Number: SPE-94790-MS
... Abstract Matrix acidizing of sandstone formations in Western Siberia, Russia has been a technology application that has been largely ignored by operators in this area. Poor acidizing practices and difficult mineralogies have lead to poor results from matrix acidizing treatments applied in the...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 25–27, 2005
Paper Number: SPE-94649-MS
... understand the processes that occur in the formation during and after a fracturing treatment.[3–6] The landmark paper by Holditch in 1979 that numerically explored the effects of formation damage in the matrix extending from the fracture face seemed to settle the issue for most. For most readers, the paper...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 13–14, 2003
Paper Number: SPE-82271-MS
... Abstract Although hydrochloric acid has been used for more than 60 years to matrix acidize carbonate reservoirs, the process is still as much art as science. Historically, design engineers have used a "rule-of-thumb" based on field experience to quantify the design parameters for a candidate...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 13–14, 2003
Paper Number: SPE-82573-MS
... permeability upstream oil & gas hydraulic fracturing frequency acid application damage removal reservoir completion installation and operations carbonate formation horizontal well wellbore fracture matrix spe 82573 productivity society of petroleum engineers oil industry...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 13–14, 2003
Paper Number: SPE-82260-MS
... matrix acid stimulation sandstone reservoir scale inhibition paraffin remediation acidizing drilling fluid chemistry matrix reaction inhibitor drilling fluid formulation mineral production chemistry application asphaltene inhibition oilfield chemistry drilling fluid property...

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