Reducing Hydroxypropyl Guar Gum Adsorption on Rock
Abstract This study is to demonstrate the application potential of silica nanoparticles (SNP) in adsorption-entanglement of the fracturing fluid and the adsorption-blocking in the tight reservoir caused by hydroxypropyl guar gum (HPG). An amount of
Chemical Degradation of Polyacrylamide during Hydraulic Fracturing
Reduced adsorption of polyacrylamide-based fracturing
Reduced adsorption of polyacrylamide-based fracturing fluid on shale rock using urea Article (PDF Available) in Energy Science and Engineering · November 2025 with 163 Reads How we measure 'reads'
Polyacrylamide‐based fracturing fluid is commonly used in shale fracturing. Polyacrylamide (PAM) becomes adsorbed in the shale micro‐fractures, decreasing the permeability of the reservoir.
Adsorption damage and control measures of slick-water
The adsorption sites of the rock surface are completely occupied by anionic polyacrylamide, and the adsorption reaches the state of dynamic equilibrium. 2.2. Adsorption rules at different concentrations Three kinds of slick water samples with different relative Fig. 2.
Based on size exclusion chromatog. analyses, the peak mol. wt. of the PAM was reduced by 2 orders of magnitude, from roughly 10 MDa to 200 kDa under typical HPT fracturing conditions. The rate of degrdn. was independent of pressure and salinity but increased significantly at high temps. and in the presence of oxygen dissolved in fracturing fluids.
Polyacrylamide in hydraulic fracturing fluid causes severe
2.2. Synthetic flowback water. Synthetic flowback water was obtained by reacting the synthetic fracturing fluid with 25 g/L shale at 80 ℃ and 83 bar for 24 h simulating downhole conditions encountered in natural gas reservoirs. The variation in these conditions across different gas formations can be large , and its impact on polyacrylamide degradation was investigated previously.
reduced from 85–6% for 7–12 days in the summer and reduced to 10% for 9–33 days in the autumn, at the same time, the volume of sludge was reduced to 15–20%. If a solar hot water
Poster Session 3 - University of Washington
Presenter. Julia Ho Young Joo, Senior, Biochemistry, Biology (Molecular, Cellular & Developmental) Mary Gates Scholar, Innovations in Pain Research Scholar, UW Honors Program, Undergraduate Research Conference Travel Awardee, Washington Research Foundation Fellow; Mentor. Jennifer Rabbitts, Anesthesiology, Seattle Children's Research Institute
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Browse by Publisher - CLOK - Central Lancashire Online
Kandola, Baljinder K. and Hull, T Richard ORCID: 0000-0002-7970-4208 (2025) Special issued based on the 16th European Meeting on Fire Retardant Polymeric Materials, hosted by Universities of Bolton and Central Lancashire, UK, July 2017 [Editorial]. Polymer Degradation and Stability, 155 . p. 194. ISSN 0141-3910
Engineering with Dissertation in Intelligent Energetic Systems are listed in Table 1 below. The number of enrolled students assumes that we will have two new full time students per year, and one new part time student per year.
- Can hydrophobically modified polyacrylamide gel be used in high temperature drilling?
- Enhanced hydrophobically modified polyacrylamide gel for lost circulation treatment in high temperature drilling J. Mol. Liq., 325 ( 2021), p. 115155, 10.1016/j.molliq.2025.115155 Rheological properties of bentonite-free water-based drilling fluids with novel polymer viscosifier J. Petrol. Sci.
- What is modified polyacrylamide drilling fluid?
- Indeed, modified polyacrylamide drilling fluid has been proven to be of great interest for use in the construction of bored piles and diaphragm walls in recent years. 1. Introduction Drilling fluid is a critical component in exploration and excavation, classified into water-based, oil-based, synthetic-based, and gas-based.
- Can cationic-surfactant polyacrylamide be used as a viscosifier in drilling fluid?
- Likewise, Shettigar et al. (2018) designed a cationic-surfactant polyacrylamide as viscosifier in drilling fluid, which showed the improvement of rheology and cutting effect due to the hydrophobic and electrostatic interaction between the surfactant (cetyltrimethyl ammonium bromide) and polymer.
- What is the pH range of modified polyacrylamide drilling fluid?
- Besides, Shettigar et al. (2018) also developed a modified grafted polyacrylamide by maintaining the pH value of 9 by using sodium hydroxide. In short, the modified polyacrylamide drilling fluid must be maintained at a pH range of 7–10 to avoid an acidic environment that is harmful to the environment and society.
