Correlation Between Filter Cake Structure and Filtration Properties of Model Drilling Fluids (1995)

Correlation Between Filter Cake Structure and Filtration Properties of Model Drilling Fluids Li Yidan; Li Yidan Institut Français du Petrole Search for other works by this author on: This Site Google Scholar Rosenberg Elisabeth; Rosenberg Elisabeth Institut Français du Petrole Search for other works by this author on: This Site Google Scholar J.F. Argillier; J.F. Argillier Institut Français du Petrole Search for other works by this author on: This Site Google Scholar Durrieu Josianne; Durrieu Josianne Elf Aquitaine Production Search for other works by this author on: This Site Google Scholar Montes Jose Montes Jose Elf Aquitaine Production Search for other works by this author on: This Site Google Scholar Paper presented at the SPE International Symposium on Oilfield Chemistry, San Antonio, Texas, February 1995. Paper Number: SPE-28961-MS https://doi.org/10.2118/28961-MS Published: February 14 1995 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Yidan, Li, Elisabeth, Rosenberg, Argillier, J.F., Josianne, Durrieu, and Montes Jose. "Correlation Between Filter Cake Structure and Filtration Properties of Model Drilling Fluids." Paper presented at the SPE International Symposium on Oilfield Chemistry, San Antonio, Texas, February 1995. doi: https://doi.org/10.2118/28961-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE International Conference on Oilfield Chemistry Search Advanced Search ABSTRACTThis study was undertaken in order to correlate the filtration behavior of water based muds with the structural properties of the cake. The structure of the cake is analysed by cryo scanning electron microscopy that enables the visualisation of a section of the frozen cake.Static and dynamic filtration experiments were performed both through rock slices and paper filters. On rock slices it is possible to visualize the structure of the internal cakes that invade the pores of the rock and in particular to show a selective filtration of the polymer when using a formulation containing bentonite and a fluid loss reducer.When compared to static filtration, dynamic filtration of a clay suspension gives higher filtrate volumes but leads to a cake texture characterized by a more regular network and smaller pore size. The augmentation of the filtrate volumes with shear rates is the result of both a decrease of the cake thickness and a diminution of connections between the clay sheets induced by shear rates. When polymer is added the structure of the pore walls seems less affected by shear rates, probably because of the high degree of dispersion already reached in the suspension by addition of the polymer and the ability of polymer to establish connections between particles.INTRODUCTIONIn drilling operation, it is of major importance to control the loss of fluid through the wellbore into the porous formation to improve the wellbore stability and decrease risks of formation damage when reaching the reservoir. This concern is even more crucial when using water based muds that must replace oil based muds for environment protection reasons. Filtration properties of a mud are directly linked to the properties of the cake that is formed throughout the filtration process. In presence of a permeable formation an internal cake is built within the rock as well as a external cake. Evaluation of filter cakes has been mainly devoted in the past to the study of static filtrations. Since a decade some works have concerned the study of dynamic conditions and described the influence of shear stress at the filtration face on the filtration properties (1-8).The aim of this work is to correlate the filtration behavior of water based muds with the structural properties of the cake and in particular to compare filtration through paper filters and rock slice, the latter enabling the observation of the structure of the internal cake. Another important parameter is the hydrodynamic conditions under which the cake is formed, namely static or dynamic conditions. We used as base fluid a suspension of bentonite and studied the influence of addition of monovalent salt and water soluble polymers. Keywords: drilling fluids and materials, shear rate, thickness, drilling fluid property, spe 28961, upstream oil & gas, naci, paper filter, polymer, rock slice Subjects: Drilling Fluids and Materials, Drilling fluid selection and formulation (chemistry, properties) This content is only available via PDF. 1995. Society of Petroleum Engineers You can access this article if you purchase or spend a download.