Rheological properties of some oil based muds used in reservoirs in the Niger Delta, Nigeria

Onojake, M. C.; Chikwe, T.N.

doi:10.4314/gjpas.v25i1.6

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…The ability of the drilling mud to suspend drilling cuttings and other solid additives when there is no applied shear stress is known as the gel strength (Salem et al, 2023). It is a measure of the shear stress required to initiate flow after a static period or a period of inactivity (Onojake and Chikwe, 2019). A higher gel strength value is required to prevent mud sagging and fluid loss, and also to maintain wellbore stability when drilling operations are paused provided it falls within the API range of 2 -35 lb/100ft 2 for 10 minutes gel strength (Biwott et al, 2019;Khan et al, 2023).…”

Section: Resultsmentioning

confidence: 99%

Comparison of Performance Properties of Muds Formulated With Synthesized C14 and C16 Esters of Lauric Acid

Orji,

Ekpo,

Ibezim-Ezeani

et al. 2024

jasem

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Drilling muds have relied on a range of base fluids, with mineral oil-based formulations dominating the landscape for decades. However, mineral oil-based muds contain a plethora of toxic aromatic compounds which are persistent in the environment. Hence, the objective of the paper was to synthesize and compare the performance properties of drilling muds formulated with C14 and C16 esters of lauric acid using appropriate standard procedures. Benchmarking of the esters with a reference synthetic base fluid indicated that the esters have suitable physicochemical properties for application as synthetic base drilling fluid. Their kinematic viscosities are within the API recommended range, ethyl laurate (EL) has a lower cloud point relative to the reference, and the two base fluids have higher flash point and electrical stabilities relative to the reference. The results obtained from comparing the rheology of muds prepared with ester products and that prepared with the reference fluid indicate that the muds prepared with ethyl, and n-butyl laurate have higher electrical stability than the mud prepared with the reference base fluid. The results also show that the muds prepared with the esters synthesized in this work displayed better rheology profiles than the mud prepared with the reference synthetic base fluid. However, ethyl laurate (EL) formulated mud had better thermal stability than n-butyl laurate (BL) at the temperature range studied. Through the investigation of these ester-based drilling muds, we showcased the potential of these esters to enhance drilling efficiency, minimize environmental impact, and optimize operational performance.

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Section: Resultsmentioning

confidence: 99%

Comparison of Performance Properties of Muds Formulated With Synthesized C14 and C16 Esters of Lauric Acid

Orji,

Ekpo,

Ibezim-Ezeani

et al. 2024

jasem

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“…The apparent viscosity (AV) of drilling mud plays a crucial role in suspending drilled cuttings and ensuring effective hole cleaning [20,21]. The AV in Fig.…”

Section: Apparent Viscositymentioning

confidence: 99%

Evaluation of Shell Powders of Bush Mango and Hamburger Bean as Eco-friendly Fluid Loss Control Additives in Drilling Mud

Nwiyoronu,

Onuoha,

Chukunedum

et al. 2024

Preprint

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Fluid loss within a permeable formation is one of the expensive problems encounter during drilling of a wellbore. Commercially available materials such as Hydroxyl Ethyl Cellulose (HEC), Polyanionic Cellulose (PAC), and Carboxyl Methyl Cellulose (CMC) are employed to minimize fluid loss but they are costly and cause increased viscosity when faced with high salinity and hardness. This study evaluate the application of shell powders of hamburger bean and bush mango as eco-friendly and cheap filtration control additives in water-based mud. Sixteen samples were formulated with different concentrations (5g, 10g, 15g and 20g) of the shell powders. The effect of the additives on the rheological property was determined. Filtration test was determined using API 13B-I LPLP filter press. Results obtained showed that 15g and 20g of Bush mango reduced fluid loss, while the mud samples with hamburger beans exhibited a progressive decrease in filtration rate as the hamburger bean content increased. Both Bush Mango and Hamburger Bean-based mud produced cake thickness between 1.2-1.8 mm. The overall result indicates that Hamburger bean provide effective filtration control than Bush mango.

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“…Modern Engineering Materials and Efficient Technologies rate is too high, the mud does not lift rock chips from the bottom of the drill, resulting in deposition and can hamper the drilling process [15]. From the test of drilling mud viscosity results with variations of CMC and constant SA concentration, it was found that the CMC addition of 1 g gives the viscosity in the minimum limit of the API 13A (30 cP).…”

Section: Figmentioning

confidence: 99%

Characterization and Rheological Improvement of Boyolali White Bentonite with Soda Ash and Carboxy Methyl Cellulose

Nuryono

Purnomo

Istiawan

et al. 2022

KEM

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The main objective of this study was to evaluate the effect of soda ash (SA) and carboxy methyl cellulose (CMC) on the rheological of white bentonite collected from Boyolali, Indonesia (BWB). The first work was the determination of BWB composition with XRF and the study on the effect of SA on the swelling index. The second step was to study adding SA and CMC on viscosity at 600 and 300 rpm. Another rheological parameter (yield point to plastic viscosity ratio, μP/μV) was determined based on the viscosity data. The results showed that the BWB sample tended to be categorized as Ca-bentonite with a calcium oxide content of 0.70 wt.% and contained montmorillonite, quartz, and pyrophyllite. SA and CMC in BWB increased the interlayer space of the montmorillonite. The addition of 14 wt.% SA to the BWB sample showed the maximum swelling index of 10 mL/2 g. The optimal formula meeting API 13A specifications is BWB sample of 81.23 wt.%, soda ash 14 % (w/w), and CMC 4.77 wt.%. This product results in the viscosity at a reading of 600 rpm of 30 cP and the μP/μV ratio of 1.0. Therefore, the product is potential as a candidate material for drilling mud.

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Rheological properties of some oil based muds used in reservoirs in the Niger Delta, Nigeria

Cited by 8 publications

References 3 publications

Comparison of Performance Properties of Muds Formulated With Synthesized C14 and C16 Esters of Lauric Acid

Comparison of Performance Properties of Muds Formulated With Synthesized C14 and C16 Esters of Lauric Acid

Evaluation of Shell Powders of Bush Mango and Hamburger Bean as Eco-friendly Fluid Loss Control Additives in Drilling Mud

Characterization and Rheological Improvement of Boyolali White Bentonite with Soda Ash and Carboxy Methyl Cellulose

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