Swelling Mechanisms Assessment of Water-Based Drilling Mud by Polyvinyl Alcohol

Danielle Poungui, Yuichi Sugai, Kyuro Sasaki, Ronald Nguele

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Swelling control is an elaborated balancing of solid-liquid ratios in the mud, influencing crucial physiochemical features. Mechanical swelling control methods showing limitations drove recent researchers to consider chemical agents, including polyvinyl alcohol (PVOH). PVOH is known to have a swelling ability to improve mud rheology. The present study investigates the synergy of PVOH and Bentonite in an aqueous environment by analyzing the effluents samples. Three types of PVOH were selected: a standard PVOH and two modified PVOHs (a non-ionic group PVOH and a cationic group PVOH-3 attached to the carbon backbone. Except for the control sample (sample without polymer), PVOHs were added to different mud samples at ranging concentrations of 0.1 wt.% to 0.5 wt.%; each has a bulk volume of 400 ml. Each mud sample was filtrated at room temperature under an applied pressure of 1.28 MPa for 5 hours. The samples' effluents were then analyzed for polymer adsorption. Preliminary filtration tests revealed further effluent production reduction with increased PVOH concentration. Compared to the control sample, samples containing standards PVOH-1, Non-ionic PVOH-2, and Cationic PVOH-3, respectively, had their mud cake mass increase of 48%, 36%, and 38%, while respectively having filtrate recovery reduction of 21%, 19%, and 43%. Adsorption tests showed mud swelling owes primarily to hydrogen bonding which is counteracted by the presence of a charged group. Mud swelling is, therefore, dependent on the rate of hydrogen bounding in a system.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2022, APOG 2022
PublisherSociety of Petroleum Engineers
ISBN (Electronic)9781613998601
DOIs
Publication statusPublished - 2022
Event2022 SPE Asia Pacific Oil and Gas Conference and Exhibition, APOG 2022 - Adelaide, Australia
Duration: Oct 17 2022Oct 19 2022

Publication series

NameSociety of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2022, APOG 2022

Conference

Conference2022 SPE Asia Pacific Oil and Gas Conference and Exhibition, APOG 2022
Country/TerritoryAustralia
CityAdelaide
Period10/17/2210/19/22

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Fuel Technology

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