Matches in SemOpenAlex for { <https://semopenalex.org/work/W4230689330> ?p ?o ?g. }
Showing items 1 to 50 of
50
with 100 items per page.
- W4230689330 abstract "Stimulation of High-Temperature Sandstone Formations from West Africa with Chelating Agent-Based Fluids Syed Afaq Ali; Syed Afaq Ali ChevronTexaco ETC Search for other works by this author on: This Site Google Scholar Emee Ermel; Emee Ermel ChevronTexaco ETC Search for other works by this author on: This Site Google Scholar John Clarke; John Clarke Search for other works by this author on: This Site Google Scholar Michael James Fuller; Michael James Fuller Schlumberger Search for other works by this author on: This Site Google Scholar Zhijun Xiao; Zhijun Xiao Schlumberger Search for other works by this author on: This Site Google Scholar Brad Malone Brad Malone Schlumberger Search for other works by this author on: This Site Google Scholar Paper presented at the SPE European Formation Damage Conference, Sheveningen, The Netherlands, May 2005. Paper Number: SPE-93805-MS https://doi.org/10.2118/93805-MS Published: May 25 2005 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Ali, Syed Afaq, Ermel, Emee, Clarke, John, Fuller, Michael James, Xiao, Zhijun, and Brad Malone. Stimulation of High-Temperature Sandstone Formations from West Africa with Chelating Agent-Based Fluids. Paper presented at the SPE European Formation Damage Conference, Sheveningen, The Netherlands, May 2005. doi: https://doi.org/10.2118/93805-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE European Formation Damage Conference and Exhibition Search Advanced Search AbstractFluids based on chelating agents have been developed for matrix stimulation of high-temperature sandstone formations. These fluids dissolve sizeable amounts of calcite and clays and maintain high levels of dissolved metal in solution over time with minimal precipitation. A series of field samples from high-temperature (149°C) sandstone reservoirs in a West African formation bear carbonate concentrations ranging from 2 to 37% (w/w). The effects of matrix treatment using a chelating agent-based system on these field samples were studied using coreflood and slurry reactor experiments.Linear coreflood test data show dramatic increases in the formation permeability after treatment with the chelating agent-based fluid. The improvement in permeability is ascribed to the removal of carbonate minerals and soluble clays, without secondary metal-precipitation. Slurry reactor tests elucidated the kinetics of mineral dissolution in mechanically ground field samples. Treatment with acidic chelant fluids generated high levels of dissolved calcium, silicon, and aluminum that remained in solution over time. For comparison, conventional mineral acid treatment of the field samples generated high levels of metals in solution that declined over the same period of time, indicative of secondary precipitation. The effectiveness of the chelant fluid for stimulation of this high temperature formation was confirmed through increased formation permeability and high levels of dissolved minerals.IntroductionTypically, the purpose of acidizing a carbonate formation is to remove near-wellbore damage and to produce wormholes to increase the permeability of the critical matrix. However, owing to the rapid reaction between hydrochloric acid (HCl) and carbonates, diverting agents such as ball sealers, viscoelastic surfactant diverters, and foams[1] are used to direct some of the acid flow away from large channels that may form initially and take all of the subsequent acid volume. Fredd and Fogler[2–4] have proposed the use of ethylenediaminetetraacetate (EDTA) chelating agents as the primary active components in fluids used to stimulate limestone and dolomite formations. By adjusting the composition and pH of these fluids, it is possible to customize the chelant solutions and target specific well conditions to achieve maximum wormhole formation with a minimal volume of solvent. Control over reaction kinetics is vital when acidizing carbonate formations at high temperatures in which high reaction rates can overwhelm some treatment fluids.For comparison, sandstone reservoirs undergo matrix acidizing treatments to remove damaging aluminosilicate minerals and reduce the skin value. The precipitation of silica is thought to be the major reason that sandstone-acidizing jobs fail to produce the anticipated decrease in skin, especially at temperatures > 150ºF or in the presence of acid-sensitive clay. Acid treatment of sandstone at high temperatures, therefore, requires a retarded acid. Additionally, conventional acid treatment of sandstone formations (such as a mud acid treatment) involves many stages of fluid, thereby increasing the complexity of the treatment. An alternative approach uses chelating agents combined with acids as the main treatment agent.Chelating agents are materials that are used to control undesirable reactions of metal ions. In oilfield applications, chelating agents[5] are frequently added to acidic stimulation fluids to prevent precipitation of solids as the acid spends on the formation. The use of chelating agents is one proposed approach to stimulation because they can complex many of the metal ions found in sandstone formations. Chelating agents are also used as components in many scale-removal and scale-prevention formulations.[6] EDTA fluids have been used extensively to control iron precipitation and to remove scale. For example, disodium EDTA has been used as a scale-removal agent in the Prudhoe Bay field of Alaska.[7] In this application, calcium carbonate scale had precipitated in the perforation tunnels and in the near-wellbore region of a sandstone formation. High decline rates followed conventional HCl treatments, but 17 wells treated with disodium EDTA maintained production after these treatments. Keywords: chelant fluid, acidizing, concentration, experiment, dissolution, upstream oil & gas, asphaltene inhibition, high-temperature sandstone formation, hydrate inhibition, scale inhibition Subjects: Production Chemistry, Metallurgy and Biology, Reservoir Characterization, Reservoir Fluid Dynamics, Acidizing, Inhibition and remediation of hydrates, scale, paraffin / wax and asphaltene, Exploration, development, structural geology, Flow in porous media, Well Operations, Optimization and Stimulation This content is only available via PDF. 2005. Society of Petroleum Engineers You can access this article if you purchase or spend a download." @default.
- W4230689330 created "2022-05-11" @default.
- W4230689330 creator A5002318539 @default.
- W4230689330 creator A5010797318 @default.
- W4230689330 creator A5012615112 @default.
- W4230689330 creator A5016755104 @default.
- W4230689330 creator A5035972648 @default.
- W4230689330 creator A5074222747 @default.
- W4230689330 date "2005-05-01" @default.
- W4230689330 modified "2023-09-22" @default.
- W4230689330 title " Stimulation of High-Temperature Sandstone Formations from West Africa With Chelating Agent-Based Fluids " @default.
- W4230689330 doi "https://doi.org/10.2523/93805-ms" @default.
- W4230689330 hasPublicationYear "2005" @default.
- W4230689330 type Work @default.
- W4230689330 citedByCount "0" @default.
- W4230689330 crossrefType "proceedings-article" @default.
- W4230689330 hasAuthorship W4230689330A5002318539 @default.
- W4230689330 hasAuthorship W4230689330A5010797318 @default.
- W4230689330 hasAuthorship W4230689330A5012615112 @default.
- W4230689330 hasAuthorship W4230689330A5016755104 @default.
- W4230689330 hasAuthorship W4230689330A5035972648 @default.
- W4230689330 hasAuthorship W4230689330A5074222747 @default.
- W4230689330 hasConcept C161191863 @default.
- W4230689330 hasConcept C166957645 @default.
- W4230689330 hasConcept C2778805511 @default.
- W4230689330 hasConcept C41008148 @default.
- W4230689330 hasConcept C52119013 @default.
- W4230689330 hasConcept C95457728 @default.
- W4230689330 hasConceptScore W4230689330C161191863 @default.
- W4230689330 hasConceptScore W4230689330C166957645 @default.
- W4230689330 hasConceptScore W4230689330C2778805511 @default.
- W4230689330 hasConceptScore W4230689330C41008148 @default.
- W4230689330 hasConceptScore W4230689330C52119013 @default.
- W4230689330 hasConceptScore W4230689330C95457728 @default.
- W4230689330 hasLocation W42306893301 @default.
- W4230689330 hasOpenAccess W4230689330 @default.
- W4230689330 hasPrimaryLocation W42306893301 @default.
- W4230689330 hasRelatedWork W1991916714 @default.
- W4230689330 hasRelatedWork W2126189245 @default.
- W4230689330 hasRelatedWork W2142127890 @default.
- W4230689330 hasRelatedWork W2182399872 @default.
- W4230689330 hasRelatedWork W2322382814 @default.
- W4230689330 hasRelatedWork W2748952813 @default.
- W4230689330 hasRelatedWork W2899084033 @default.
- W4230689330 hasRelatedWork W4231226515 @default.
- W4230689330 hasRelatedWork W4232745934 @default.
- W4230689330 hasRelatedWork W587885555 @default.
- W4230689330 isParatext "false" @default.
- W4230689330 isRetracted "false" @default.
- W4230689330 workType "article" @default.