scholarly journals Assessment of some baryte ores from Northern Cross-River, Nigeria, for oilfield drilling fluid supplement

2021 ◽  
Vol 9 (1) ◽  
pp. 3015-3026
Author(s):  
Debrah Memshima Oahimire ◽  
Victor Uchechi Ukaegbu ◽  
Joel Friday Ogbonna
Keyword(s):  
Oil And Gas ◽  
Drilling Fluid ◽  
American Petroleum Institute ◽  
Drilling Fluids ◽  
X Ray Diffraction ◽  
Cross River ◽  
X Ray ◽  
Oil And Gas Fields ◽  
Local Quality ◽  
Gas Fields

There is a very high demand for the American Petroleum Institute (API) grade baryte in Nigeria due to the continuous massive drilling in oil and gas fields. Considering the presumption that local baryte is of low quality, processed baryte is imported, leading to great national revenue losses. Some baryte deposits in the Northern Cross River, Nigeria were sampled and studied in field and laboratories, based on API standard requirements (2004 and 2010), to ascertain their suitability for use as weighting additive in drilling fluids. Furthermore, flame testing of the samples yielded yellowish-green flame indicating barium presence; X-ray diffraction (XRD) and X-Ray fluorescence (XRF) analyses confirmed the mineralogy and chemical composition of the samples, respectively. The results revealed the Specific Gravity, SG range of 4.37 to 4.52; concentration of alkali earth metals as calcium 8.40mg/kg to 62.10mg/Kg; the residue >75micron and particle sizes <6microns processed had normal range, respectively below 3% and 30%; and the samples’ BaSO4 %weightcomposition was over 90%. The chemical analysis indicated no significant undesired minerals. Galena gangue with baryte was observed in three locations though these could be easily beneficiated through physical separation. The tests and analyses result qualified the Northern Cross River baryte samples as high-grade API standard baryte, suitable for oilfield drilling fluid. Further estimation of the baryte reserves in this region was highly recommended, as this might proffer a substantial solution to the sustainable supply of excellent local quality drilling baryte in Nigerian oilfields.

Clay Mineral Alteration in Oil and Gas Fields: Integrated Analyses of Surface Expression, Soil Spectra, and X-Ray Diffraction Data

2020 ◽  
Vol 46 (2) ◽  
pp. 237-251
Author(s):  
Tri Muji Susantoro ◽  
Asep Saepuloh ◽  
Fitriani Agustin ◽  
Ketut Wikantika ◽  
Agus Handoyo Harsolumakso
Keyword(s):  
Clay Mineral ◽  
Diffraction Data ◽  
Oil And Gas ◽  
Surface Expression ◽  
X Ray Diffraction ◽  
X Ray ◽  
Oil And Gas Fields ◽  
Mineral Alteration ◽  
Gas Fields

Applications of Nanomaterials in Wellbore Fluids in Oil and Gas Fields

2021 ◽  
Vol 881 ◽  
pp. 33-37
Author(s):  
Wei Na Di
Keyword(s):  
Oil And Gas ◽  
Drill String ◽  
Wellbore Stability ◽  
Petroleum Engineering ◽  
Cement Stone ◽  
Drilling Fluids ◽  
Cement Slurry ◽  
Oil And Gas Fields ◽  
Gas Channeling ◽  
Gas Fields

The application of nanomaterials in oil and gas fields development has solved many problems and pushed forward the development of petroleum engineering technology. Nanomaterials have also been used in wellbore fluids. Nanomaterials with special properties can play an important role in improving the strength and flexibility of mud cake, reducing friction between the drill string and wellbore and maintaining wellbore stability. Adding nanomaterials into the cement slurry can eliminate gas channeling through excellent zonal isolation and improve the cementing strength of cement stone, thereby facilitating the protection and discovery of reservoirs and enhancing the oil and gas recovery. This paper tracks the application progress of nanomaterials in wellbore fluids in oil and gas fields in recent years, including drilling fluids, cement slurries. Through the tracking and analysis of this paper, it is concluded that the applications of nanomaterials in wellbore fluids in oil and gas fields show a huge potential and can improve the performance of wellbore fluids.

Quality assessment of some baryte ores in Benue state area, Nigeria for oilfield drilling

2021 ◽  
Vol 8 (4) ◽  
pp. 2861-2872
Author(s):  
Debrah Memshima Oahimire ◽  
Victor Uchechi Ukaegbu ◽  
Joel Friday Ogbonna
Keyword(s):  
Drilling Fluid ◽  
Field Studies ◽  
American Petroleum Institute ◽  
Chemical Compositions ◽  
X Ray Diffraction ◽  
Standard Requirement ◽  
X Ray ◽  
Weight Percentage ◽  
Exploration And Production ◽  
Drilling Operations

The massive exploration and production well drillings in Nigerian oilfield indicate the demand for drilling fluid supplements such as baryte, in managing over-pressured formations and preventing hazardous blowouts. The underdevelopment of Nigerian solid minerals has created a wide gap between the demand and supply of the local resource, whereas there exist some assertions that the Nigerian baryte quality is below the American Petroleum Institute, API, standard. This study aimed at testing and evaluating qualitatively, based on API standards, some baryte ores from the Benue area, Nigeria, to establish their usefulness or otherwise in oilfield drilling operations. General field studies and sampling with laboratory studies were done including flame tests, X-ray Diffraction and X-ray fluorescence, to confirm mineralogy and chemical compositions of the barytes respectively and very importantly, the API tests prescribed for drilling grade barytes were carried out. The results showed impressive quality barytes with a specific gravity range from 4.10 to 4.49 and concentration of alkaline earth metals as calcium, Ca, 20mg/kg to 48mg/kg, particle sizes processed within API standard requirement, and the weight percentage of BaSO4 composition of the ores ranged from 93.55% to 99.61%. There were no significant impurities of threat such as carbonates, iron ores, silicates and sulphides. The estimation of reserves and proper development of the resource is highly recommended as the quantity and quality might enhance the sustainability of local drilling grade baryte supply and save Nigeria the current huge capital flight and other plights

Experimental Study of the Factors Influencing Filtrate Loss of the High-Density Brine Drilling Fluid

2011 ◽  
Vol 361-363 ◽  
pp. 461-464
Author(s):  
Ming Zhang ◽  
Tian Tai Li ◽  
Xi Feng Zhang
Keyword(s):  
Laboratory Experiments ◽  
Oil And Gas ◽  
Drilling Fluid ◽  
Field Application ◽  
High Density ◽  
Fluid Loss ◽  
Affecting Factors ◽  
Oil And Gas Fields ◽  
Filtrate Loss ◽  
Gas Fields

High density brine drilling fluid has been widely applied in the high pressure and complex oil and gas fields. Effectively controlling high density brine drilling fluid loss is an important factor for reducing the reservoir damage and keeping well stability. Base on general drilling fluid formulations，the affecting factors of filtrate loss of high density brine drilling fluid were analysed through mass laboratory experiments. The results show that the main fctor was the content of caustic soda and bentonite, secondly the density and the shape of adding product. The combination of adding product is one of effective method to control the filtration property of high density brine drilling fluid. The results will provide reliable foundation for successful field application.

X-ray tomography in petrophysical studies of core samples from oil and gas fields

2015 ◽  
Vol 56 (5) ◽  
pp. 782-792 ◽  
Author(s):  
S.V. Galkin ◽  
A.A. Efimov ◽  
S.N. Krivoshchekov ◽  
Ya.V. Savitskiy ◽  
S.S. Cherepanov
Keyword(s):  
Oil And Gas ◽  
X Ray ◽  
Core Samples ◽  
Oil And Gas Fields ◽  
Gas Fields

scholarly journals Mechanism and modelling of CO 2 corrosion on downhole tools

2019 ◽  
Vol 6 (4) ◽  
pp. 181899 ◽  
Author(s):  
Jigang Wang ◽  
Lihui Meng ◽  
Zhenzhong Fan ◽  
Qingwang Liu ◽  
Zhineng Tong
Keyword(s):  
Oil And Gas ◽  
Influential Factors ◽  
Localized Corrosion ◽  
X Ray Diffraction ◽  
Corrosion Failure ◽  
Oil And Gas Exploration ◽  
Oil And Gas Fields ◽  
Metal Rubber ◽  
Corrosion Mechanisms ◽  
Gas Fields

The conditions surrounding oil and gas exploration are becoming more hazardous, especially in oil and gas fields with a high quantity of corrosive components such as CO 2 . CO 2 causes localized corrosion of tools made from metal, rubber and other materials in humid environments; this leads to corrosion failure in metal equipment and downhole tools such as drills pipes, casings and oil pipes, thereby reducing their service life. In this study, the composition, lattice and crystalline forms of corrosion products and corroded materials were analysed using scanning electron microscopy, energy spectrum analysis, X-ray diffraction and polarization curves, in order to investigate the corrosion mechanisms and influential factors for several common tool materials. A CO 2 corrosion model was established for two materials and the results were verified with optimal prediction values.

scholarly journals Influence of reactivity and mineralogical composition on instability due to the disintegration of shales from Paraíba and Ceará States, Brazil

Cerâmica ◽  
2019 ◽  
Vol 65 (375) ◽  
pp. 400-406
Author(s):  
C. A. Leal ◽  
M. N. C. Brunet ◽  
L. V. Amorim ◽  
H. L. Lira ◽  
F. C. C. Nogueira ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Bentonite Clay ◽  
Mineralogical Composition ◽  
Particle Size Analysis ◽  
Exchange Capacity ◽  
Potassium Citrate ◽  
American Petroleum Institute ◽  
Size Analysis ◽  
X Ray Diffraction ◽  
X Ray

Abstract This work aimed to correlate the reactivity and mineralogical composition of shales to their disintegration. To accomplish this, five samples of shale from Rio do Peixe Basin and Araripe Basin, located in the Brazilian States of Paraíba and Ceará, respectively, were characterized. A sample of industrialized bentonite clay was used as a reference to provide a comparison. Characterization was performed through cation exchange capacity, particle size analysis, X-ray fluorescence, and X-ray diffraction. Disintegration tests were performed according to the American Petroleum Institute standards in the presence of deionized water, aqueous potassium citrate solution, and drilling fluid. The results suggested that samples presenting no reactive clay mineral content may be unstable and the higher the reactivity of the samples to aqueous fluids does not necessarily imply a higher level of disintegration. This demonstrated that different mechanisms not associated with clay swelling may assume greater or lesser relevance on the instability of a formation.

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