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Keywords: lignosulfonate
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Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, December 6–7, 2021
Paper Number: SPE-204327-MS
...Introduction Lignosulfonates are by-products obtained during acidic sulfite pulping of wood. The introduction of sulfonic acid groups in lignin molecule during the pulping process makes the lignin water soluble, thereby finding utilization in various industrial applications as dispersants...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 8–10, 2013
Paper Number: SPE-164116-MS
... cake gel breaker fracturing fluid residue filtrate USA breaker permeability breakdown pressure range lignosulfonate gel characterization Compound polysuccinimide spe 164116 Introduction Permeability damage caused by formation invasion and filter cake deposition by polymers used...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 8–10, 2013
Paper Number: SPE-164103-MS
... FLA enhance its affinity for the surface of cement and thus render it more robust against the negative impact from other admixtures. Second, compatibility between a Na + lignosulfonate retarder and the CaATBS-co-NNDMA FLA was investigated. Here, surprisingly a dual synergistic effect was found. Na...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 2–4, 2005
Paper Number: SPE-93098-MS
... Abstract Equilibria and kinetics are two basic ingredients for the proper understanding of adsorption and desorption processes between surfactants and rocks. The adsorption and desorption of calcium lignosulfonate (CLS), commonly used as a sacrificial agent in surfactant-based EOR processes...
Proceedings Papers

Paper presented at the International Symposium on Oilfield Chemistry, February 5–7, 2003
Paper Number: SPE-80244-MS
... of lignosulfonate, kraft lignin and a pentose sugar. Laboratory studies have shown that the performance of this product exceeds that of conventional set retarders with regard to maintaining the stability of the foamed cement system. This set retarder can also function in non-foamed applications. Several wells have...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 14–17, 1995
Paper Number: SPE-28957-MS
... Abstract A synthetic cement retarder which provides excellent retardation and compressive strength development has been synthesized. The response properties and temperature ranges of the synthetic retarder far exceed those of commonly used retarders such as lignosulfonates. The chemical nature...
Proceedings Papers

Paper presented at the SPE Oilfield and Geothermal Chemistry Symposium, April 9–11, 1985
Paper Number: SPE-13559-MS
... with aqueous base to form anionic polymers which pro- duce the changes in mud rheology noted above. Both components of the reaction product are active in con- trolling mud properties. INTRODUCTION ·Since the introduction of calcium lignosulfonate deflocculants in 1947 (1)* and chrome lignosulfonate modifiers...

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