Scale control in oilfield operations is the intervention technique deployed to remove the assemblage of solid deposits from the surface of oil and gas well tubular and associated equipment. Common mineral scales that plague production operations are Barium Sulfate, Strontium Sulfate, Calcium Carbonate, and Iron Sulfide. Some of these scales can be dissolved with acid while others cannot. Barium Sulfate which is common at perforations and downstream of chokes is notorious for its resistance to chemical treatment because of its low acid solubility.
This study investigates the effect of different chemical inhibitors on Barium Sulfate scale. The tube blocking test is widely used to evaluate the efficiency of these chemical inhibitors. Although the principal method of investigation was the tube blocking apparatus, preliminary analysis and optimization were done using the static bottle test and a scale inhibitor performance prediction software called French Creek. The static bottle test was used as a screening method whereby ionic interaction between anionic, cationic and inhibitor solutions gave a clear difference in turbidity or otherwise. The French Creek interface allowed multiple iterations over a range of operating conditions and treatment options. A tube blocking apparatus was constructed to simulate the buildup of scale deposits in an oil pipeline. The set up was operated at pressure and temperature of 100psi and 90°C respectively. Of all the additives tested, phosphonate based chemical had the lowest minimum inhibitor concentration.
|Commitee:||Boukadi, Fathi, Feng, Yin|
|School:||University of Louisiana at Lafayette|
|School Location:||United States -- Louisiana|
|Source:||MAI 54/06M(E), Masters Abstracts International|
|Keywords:||Differential pressure, Dynamic scale loop test, French creek, Jar testing, Phosphonate based, Scale control|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be