... Abstract Five different variants of the acrylamidotertiary-butyl sulfonic acid (ATBS) / N,N-dimethylacrylamide (NNDMA) copolymer were examined and evaluated, comparing their mixability and fluid-loss performance. These were characterized using gel permeation chromatography equipped with multi...

... by leak-off. These fluids should not only provide excellent fluid loss prevention, but also exhibit the rheological characteristics needed to perform the traditional functions of conventional fluids. Even though these fluids reduce the amount of particulates entering the formation by containing less...

...-based sulfonated fluid loss polymer were tested. It was found that this C-S-H- based nanocomposite is fully compatible with these additives. The novel accelerator based on a C-S-H-PCE nanocomposite solves the problems generally associated with CaCl 2 , namely undesired viscosity increase, poor...

... Abstract Synthetic polymers have long been used as fluid-loss additives (FLAs) in hydraulic cement slurries for cementing subterranean zones. Typically used synthetic polymeric materials include N,N-dimethylacrylamide and sulfonated acrylamide monomers, which are preferred for high temperature...

... Practice for Testing Well Cements, API Recommended Practice 10 B-2, issued by the American Petroleum Institute (RP 10B-2 2005). Fluid loss tests below 100 °C were performed at a differential pressure of 70 bar N 2 using a 500 mL HP/HT filter press. At temperatures ≥ 100 °C, cement fluid loss was assessed...

... Abstract This paper investigates the performance of different kinds of polycarboxylate (PCE) dispersants in combination with cellulose ethers as fluid loss additives and presents their influence on the fluid loss. The objective was to find out whether PCEs can better enhance the fluid loss...

..., the presence of sodium chloride in a cement slurry can severely impact its properties such as thickening time and fluid loss ( Whisonant, 1988 ). Some formations including Brazil's presalt contain a significant amount of magnesium salts, such as carnalite (KMgCl 3 • 6H 2 O) and tachyhydrite (CaMg 2 Cl 6 • 12H...

... temperatures (250 to 350°F) where generally modified natural polymers, synthetic polymers or combinations can be used. These products support fluid loss control and rheology; however, combinations of different products add cost and complexity to the mud system. These are becoming less robust and often...

... drilling fluid property drilling fluid selection and formulation casing and cementing Upstream Oil & Gas drilling fluids and materials adsorption Biopolymer Effectiveness drilling fluid chemistry drilling fluid formulation fla cement admixture fluid loss control retarder fluid...

.... Application of the customization process to develop WBMs for other shale plays around the globe is also discussed. drilling fluid selection and formulation complex reservoir information shale gas drilling fluid formulation fluid loss drilling fluid property upstream oil & gas spe 140868...

...Laboratory Experiments Various tests were performed to evaluate the usefulness and compatibility of the FEM product on different fracturing fluids. These tests included the measurement of viscosity, fluid loss, core retained permeability, and proppant pack retained conductivity using...

... pcf, latex is required. For wells with drilling fluid densities that are less than 120 pcf, conventional dry fluid loss additives are recommended. These wells with high mud density usually have had considerable flow from the formation. The time required to build the mud volumes to obtain the proper...

... and to uncover the mechanisms responsible for these effects. As such, the performance of a CaATBS- co -NNDMA fluid loss additive which was synthesized in our laboratory with cement and silica flour and at elevated temperature was studied. Besides, its behavior in the presence of different anions, namely sulfate...

... modification of tricalcium aluminate (Ca 9 Al 6 O 18 ) 4 C 4 AF: tetra calcium aluminate ferrite (Ca 4 Al 2 Fe 2 O 10 ) 5 measured by thermogravimetry Fluid loss additives 88% hydrolyzed, non-crosslinked polyvinyl alcohol possessing a M W of between 150,000 and 200,000 g/mol was used...

... for 16 hours at 450°F. Rheology was determined at 120°F on a Fann-35 viscometer, both before and after thermal aging. The HPHT fluid loss of the aged fluids was measured at 350°F, 500 psi. The formulations shown in Table 2 were arrived at after extensive optimization to meet the required specifications...

... fluid loss surfactant fluid chemical flooding methods drilling fluids and materials Funkhouser enhanced recovery experiment Betaine oscillatory stress sweep society of petroleum engineers surfactant viscosity spe 105815 shear rate fluid loss control acidizing concentration steady shear...

... prohibitive, where their use is undesirable. In such circumstances, a high-performance water-based drilling fluid is the only option available. A main challenge in developing a water-based fluid for such applications has been to maintain the stability of key fluid properties such as rheology and fluid loss...

... and related field case histories will be presented. casing and cementing fluid loss spe annual technical conference slurry 1 cement property Upstream Oil & Gas slurry 3 thickening-time plot cement slurry cement formulation transition time fira hydration cement chemistry formation fluid...

... Abstract During completion and workover for the recovery of oil and gas, fluid loss pills are used to control completion brine losses to the formation. Basically, the operator has three types of fluid loss pills to choose. They are linear water soluble polymers like hydroxy ethylcellose (HEC...

... of Friction (C.F.) and Fluid Loss Values of Drilling Fluids Containing Starch-Lubricant Compositions. C.F. % reduction API filtrate HTHP @ 250 °F Drilling Fluid Baroid Westport from control 3 MI MI Base mud (control) 0.325 0.3126 – 8.0 26 Field mud, 3% lubricant 4 0.385...