Mud properties using barite as the weighting …
A common weighting material used in the oil and gas industry is barite. In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling ...
A common weighting material used in the oil and gas industry is barite. In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling ...
The Einstein equation represents the effect of ''inert'' particles like barite fairly well, at least until their concentration becomes so great that the particles begin interacting with each other. Most particles in drilling fluids, however, have strong surface charges and interact strongly with each other at any concentration.
Actually, discarding any solids from a drilling fluid decreases density. Replacing low-gravity solids with barite will decrease the total solids concentration, make filter cakes more compressible, decrease the propensity for stuck pipe and lost circulation, and improve the possibility of faster drilling (by increasing the founder point).
This report concerns the analysis of the factors (bentonite, barite, salt contamination and sand content) that affects basic properties of drilling fluid specifically; mud weight (density), apparent viscosity and hydrogen ion concentration).
Add Barite to obtain the required drilling fluid density. Fluid System Guidelines. Fluid maintenance is the same as for the KCL- PHPA-Polymer system, the only difference being the presence of Glycol (DCP-208), where cloud point is monitored. ... (DCP-208) concentration in a mud system can be obtained by making use of its …
It was also observed that when the barite concentration was 0%, the plastic viscosity decreased as the temperature increased meaning that the drilling mud sagged whereas an increase in barite concentration to 10% revealed an opposite relationship, the plastic viscosity increased as the temperature increased. ... Keywords: Barite; Galena ...
Bentonite continues to rank second in quantity only to barite as a mud additive, as shown in Fig. 11-2.14 In spite of the partial replacement of bentonite by polymers in some muds, about 1,160,000 short tons (1,050,000 tonnes) of swelling-type bentonite, with a well-site cost of roughly $120,000,000 (check also oil well drilling well …
In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling fluid properties are density, pH value, filtration behavior, and rheological ...
A barite additive concentration of 135 lb/sk of cement will provide a maximum slurry weight of 19 lb/gal. ... Drilling barite in the mud and associated drill cuttings are the largest volume wastes ...
Drilling mud and associated drill cuttings are the largest volume wastes associated with drilling of oil and gas wells and often are discharged to the ocean from offshore drilling platforms. ... were calculated for determining the predicted environmental concentration (PEC; the bioavailable fraction) of metals from drilling mud barite in the ...
The instability in the drilling mud properties results from various contaminants in the mud system. Generally, good drilling mud is simple and contains few additives. This allows easier maintenance and …
A major issue with the use of the weighting agents is that they settle out of the mud, causing density fluctuations that ultimately result in pipe sticking, lost circulation, and even well abandonment (Amani, 2018; Amighi and Moghadam, 2011; Paslay et al., 2007).This phenomenon is called barite sagging (Fig. 1), due to the predominant use of …
Because reservoir pressure usually increases with well depth, the concentration of barite in the drilling mud is increased as the well is drilled deeper (Neff et al. 1987). Barite is a soft, dense (4.1–4.5 g/cm3) natural mineral. Drilling mud barite is at least 92% pure (USEPA 1985), has a specific gravity greater than 4.2 g/cm3, and 97 ...
As show in Fig. 4, Fig. 5, Fig. 6, ES drops in half as the drilled solid (bentonite) concentration increases from 0 to 75 lb/bbl.The HPHT FL doubles while the YP quadruples as the bentonite concentration increases. The bentonite which is reactive, lacking any surfactant to it oil-wet adsorbs and removes any available emulsifier and …
The thickness of the mud cake for WBDFs weighted with the mixture of API barite and mMB primarily decreased and then increased slowly with the increase of the …
the concentration of barite in the drilling mud is increased as the well is drilled deeper (Neff et al. 1987). Barite is a soft, dense (4.1–4.5 g/cm3) natural mineral.
The mud viscosity was maintained using bentonite and xanthan gum polymer. Then, starch and low viscosity polyanionic cellulose (PAC-LV), and calcium carbonate were employed to enhance the filtration control capability of the drilling fluid. The clay was stabilized with potassium chloride, and the mud's density was increased using …
An extensive offshore testing program and procedure was developed, and two extra mud engineers were mobilized to the rig with the sole task of conducting hourly lab testing of SOURSCAV concentration and H2S …
Barite-seawater and barite-porewater distribution coefficients (Kd) were calculated for determining the predicted environmental concentration (PEC; the bioavailable fraction) of metals …
After finding the optimum concentration for each of the drilling mud ingredients. The sag tests were performed for the optimum formulation of the drilling fluid using various barite concentrations (4, 5, 6, and 8) wt.%. The sag test was conducted to evaluate the effect of barite concentration on the drilling fluid stability.
Barite dosages of 250, 350, and 450 grams resulted in drilling mud density equal to 13.9, 15.6, and 17.5 ppg, respectively. Another important property is the …
API barite was easy to settle down, and under a certain pressure difference, mud cake could be quickly formed which decreased the filtration volume (Fig. 8). API barite/WBDFs showed a bimodal distribution (Fig. 10 and Table 4) which contributed to the less filtration loss. The particle size distribution of mMB/WBDFs showed a unimodal peak.
A common weighting material used in the oil and gas industry is barite. In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling ...
This behavior indicates a decrease of the plastic viscosity sensitivity with an oil fraction disturbance, in a drilling mud with an excess of barite concentration (or …
Before placing the cement in the annulus between the formation and casing, the wellbore drilling mud is conditioned and displaced with a spacer or other pre-flush with the intention of displacing all the mud and preventing mud-cement contact [6, [15], [16], [17]].Multiple studies have shown that the efficacy of mud displacement is not 100 % …
This behavior indicates a decrease of the plastic viscosity sensitivity with an oil fraction disturbance, in a drilling mud with an excess of barite concentration (or with an increase of mud weight). However, Fig. 4 (A) and (B) also indicate a downward trend of the emulsifier concentration sensitivity with the mud weight increase. This ...
The consistency index (K) increases as the barite concentration is increased, which indicated that the fluid becomes more viscous when barite concentration is increased. …
It was also observed that when the barite concentration was. 0%, the plastic viscosity decreased as the temperature increased meaning that the drilling mu d sagged. whereas an increase in barite ...
Drilling fluid is a critical component in drilling operation due to its various functions. It consists of many elements, and one of the main components is the weighting material which controls the mud density. …
The yield point at 0% barite concentration gave the least yield point; this signifies that the barite concentration aids in the carrying capacity of the drilling mud. It was also observed that the barite concentration can be used to make the fluid more pseudo-plastic in nature.
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