... directional drilling tester aston drilling fluid property barite reduction lubricant spe 56562 concentration modification bead drilling mud lubricity tester particle microbead torque Introduction Mechanical friction during drilling operations is a problem in long narrow, highly inclined...

... (LSR) by adding superabsorbent materials and lightweight fillers such as bentonite, diatomaceous earth, expanded perlite, etc. Another technology is to add glass microbeads materials which have low densities, such as fly ash, floating beads, hollow beads, and so on. They can replace some of the cement...

... proceeds further, a large number of optically anisotropic mesophase spherules appears in petroleum pitch. Those spherules can be separated from the pitch as a quinoline insoluble matter, the spherules thus separated being called meso-carbon microbeads. The microbeads can be used as a binder pitch improver...

.... (1999) used polymer microbeads in WBM system to decrease the coefficient of friction; they reported a 40% reduction in the coefficient of friction using mono-sized polystyrene crosslinked with divinylbenzene polymer microbeads. Schamp et al. (2006) investigated mechanical torque reduction tools...

... provided almost twice the shear bond strength and increased tensile strength by 50% compared to other slurry compositions. In the current work, cement-resin composite, synthetic latex modified, microbead-based, water-extended, and elastomer-modified slurries are compared at 13 lbm/gal. Various parameters...

... filter. Glass microbeads, available in a wide range of particle sizes, was used as the packing material. Microbeads giving a permeability of 21 μm 2 (Darcy) were used to simulate a high-permeable zone in the middle third of the model, while both edge portions were packed with microbeads that have...

... by preserved core. The core plug was centrifuged to reach residual oil saturation (S orw ) conditions and 50 PV of seawater was injected into the plug to mimic the injector’s near wellbore condition in the field. Then 50PV of SW mixed with only 2μm microbeads was injected into the core; the purpose...

.... Kilaas , A.D. Dyrli , and J. Sveen , SINTEF Microbeads as Lubricant in Drilling Muds Using a Modified Lubricity Tester , SPE 56562 Terrell Jensen and Ken Slater , M-I SWACO, a Schlumberger Company, Product Selection Process Utilizing New Lubricity Device Accurately Predicts...

...-pressure oil and gas wells. At present, there are mainly two types of low-density cement slurry systems used for low-pressure leakage-prone Permian stratum, i.e., the 1.40-1.50 g/cm3 high-resistance microbead low-density cement slurry or 1.60 g/cm3 fly ash low-density cement slurry. There are mainly two...

... polymer, reverse emulsion breaker, or a combination of both. Emulsion polymers are defined here as dispersions of a hydrogel of water-soluble polymer in an oil medium, with dispersed hydrated polymer in the shape of microbeads of 1 µm average diameter. With the stabilization of surfactant...

... of mannose-binding lectin, or a fragment thereof, linked to a portion of a Fc region. In some embodiments, the microbe-targeting molecules or microbe-binding molecules can be conjugated to a substrate, e.g., a magnetic microbead, forming a microbe-targeting substrate (e.g., a microbe-targeting magnetic...

.... : " Microbeads as Lubricant in Drilling Muds Using a Modifies Lubricity Tester, " SPE 56562 presented at the 1999 SPE Annual Technical Conference and Exhibition , Houston , 3-6 October . Stribeck , R. : " Die Wesentlichen Eigenschaften der Gleit- und Rollenlager. " Zeitschrift des Vereines Deutscher...

... with spherical glass microbeads, was attached to each measurement point on the surface of the sample. This ensured that the Doppler shifted beam was reflected back into the sensor head. The output signal of the LDI was fed to a Tek- tronix TDS 3034C oscilloscope from which waveforms were Page 2755SEG Denver 2014...

...- scale effects rather than the physical property differences among the ume fraction of the beads and epoxy in each sample. We used the measured samples. Class-V, close sized uni-sphere glass-beads which are the products of MICROBEADS DEPARTMENT, CATAPHOTE DIVISION, FERRO COR- INTRODUCTION PORATION. We...