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Articles by Auda Jabbar Braihi
Total Records ( 2 ) for Auda Jabbar Braihi
  Auda Jabbar Braihi , Reyam Jumaa Jehad and Sajjad Hamead Enad
  This research aims to design drilling muds using different polymers and nano filler for a certain section in Al-Halffia oilfield in Maysan Government (Iraq) and study their properties. Carboxymethyl Cellulose (CMC), Poly Vinyl Alcohol (PVA) and Superabsorbent Polymer (SAP) were added in five ratios (1, 1.6, 2.1, 2.6, 3.2 wt. %) individually. Silica Nano Particle (SNP) was added to the best formula in five ratios (1, 2, 3, 4, 5 wt. %). Properties of drilling muds such as gel strength, density, viscosity, filtration and alkalinity were studied. Results showed that the PVA addition causes fluctuation in filtration and viscosity properties and decreasing in PH values, while the density remain constant approximately. SAP addition causes sharp decreasing in the filtration ability and increasing in viscosity, alkalinity and density. CMC addition causes the same behavior as SAP effect but with little decrease in filter loss and increasing in gel strength property. From the optimization view point, CMC with 2.1 wt% seems to be the best formula for the certain section of Al-Halffia oilfield. The addition of SNP to the best formula increased the filtration and the alkalinity, while viscosity and density sever from fluctuations.
  Sihama Issa Salih , Fadhel Abbas Hashem and Auda Jabbar Braihi
  Synthesize Super Absorbent Polymer Nano Composites (SAPNCs) is done by addition of three nano materials individually to the neat blend which formed from carboxymethyl cellulose, starch and alum as cross-linker. These materials are nano Graphite Oxide (GO) Silica Nano Particles (SNP) and nano Hydroxy Apatite (HA). SAPNC with nano GO showed higher absorption capacity (69 g) than those prepared from SNP (64 g) and from HA (59 g), therefore, several samples of SAPNC were prepared with 0.1, 0.2, 0.3, 0.4 and 0.5 wt.% nano GO. Many tests suggest that GO with the neat blend forming a structure similar to the molecular sieves with an entrance which enhance water molecules to enter to the new structure which is responsible for the above increment beside the hydrogen bonding formation. As the GO concentration increased and reached the maximum absorbency at 0.3%. After that the absorbency decrease. This is due to the excess GO which partially or completely plug the entrance of structure. Sodium chloride effect on the swelling behaviors of GO-SAPNA was studied and showed absorption reduction with the increasing of the ionic strength of surrounding media. Results showed that SAPNC with 0.3 wt.% nano GO have highest free swelling ratio, highest Absorbency Under Load (AUL) and lowest re-swelling ability while SAPNC with 0.5 wt.% of nano GO have the opposite corresponded values.
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