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Keywords: deposition
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Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 2–4, 2021
Paper Number: SPE-207116-MS
... Abstract In-depth knowledge of geostatistical analysis, environment of deposition and reservoir facies types is important for optimal distribution of reservoir properties across the reservoir grid. Geostatistics is a veritable tool that is quantitatively used to model spatial continuity...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 11–13, 2020
Paper Number: SPE-203715-MS
... and the mixes of all the streams were modelled using SCALECHEM to determine their scaling tendencies and the quantity of scale to be deposited based on fluid (produced water) properties and system operating conditions. All the source of produced water to be injected into the G-sands in OML 18 including...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 11–13, 2020
Paper Number: SPE-203750-MS
... The complexity and damages that result from the precipitation and deposition of hydrogen sulfide (H 2 S) in the sour gas reservoirs constitute challenges during modeling of gas production and transportation from such reservoirs. During production from a fractured gas reservoir with high H 2 S saturation...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 11–13, 2020
Paper Number: SPE-203618-MS
... chemistry wax remediation wax inhibition asphaltene remediation flow assurance oilfield chemistry pvt measurement scale inhibition precipitation asphaltene inhibition remediation of hydrates paraffin remediation hydrate remediation hydrate inhibition upstream oil & gas deposition wax...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 11–13, 2020
Paper Number: SPE-203607-MS
... ). Specifcally, precipitation and deposition of wax and asphaltene usually cause serious flow assurance problems during production and transportation of crude oil, which may subsequently have sigficant economic implications ( Chen, 2004 ; Fadairo, 2010 ; Pu, 2014 ; Alade et al., 2020 ). At reservoir...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 11–13, 2020
Paper Number: SPE-203612-MS
.... This continuous precipitation of wax increases the layers of wax which attach themselves to the deposited wax on the walls. The volume of wax crystal deposits increases with time and this is called ageing and this causes hardening of the wax with time. If the oil temperature then falls below the pour point...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 11–13, 2020
Paper Number: SPE-203660-MS
.... For the prevention of wax deposition, the use of a downhole heater was ruled out due to the unavailability of compact power generating units with minimal footprint to be used at the well head considering the fact that the well was located in a remote swamp location and as such the security of the power generator...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 5–7, 2019
Paper Number: SPE-198844-MS
... and deposition in reservoirs and production systems. One commonly used method to achieve this is the scale inhibitor squeeze treatment. The challenge addressed here using modelling is to prolong the squeeze treatment lifetime in heterogeneous reservoirs, thus, reduce the cost per barrel of oil produced...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 6–8, 2018
Paper Number: SPE-193515-MS
... with that of a Paraffin inhibitor, with respect to a producing well's wax formation tendencies and characteristics with the view of optimizing well performance subject to chemical injectivity. In the first case, well fluid was continuously treated with Paraffin dispersant to prevent wax deposition and subsequent...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 6–8, 2018
Paper Number: SPE-193380-MS
... the thickness of the deposited wax ( Chen et al ., 1997 ). Once the frictional pressure drop across a pipe section is measured and the flow rate, density and viscosity of the crude oil in the pipe section are determined, the wax thickness present in the pipe wall can be calculated accurately from the following...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, July 31–August 2, 2017
Paper Number: SPE-189150-MS
... in the country. Between 2014 and 2015, multiple tripping had been observed on the transfer pump at the Beta gas plant. Laboratory analysis of the recovered solid deposits in addition to scale simulations of the hydrocarbon fluid confirmed the presence of calcium carbonate scale (85.2%wt). Although the culprit...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, July 31–August 2, 2017
Paper Number: SPE-189080-MS
... filtration (DBF) to develop simple semi-empirical mathematical models for predicting the time-to-failure of vertical and slightly deviated water injectors. While water-hammer mobilises solid particulates native to the formation and deposits same in the wellbore, DBF entails external particulates suspended...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 2–4, 2016
Paper Number: SPE-184327-MS
... of the South Atlantic Ocean. The rift system linked the Tethys to the South Atlantic through the Sirte, Chad, Anambra, and Niger basins. The Cretaceous delta was deposited in the Anambra Basin until a final Paleocene phase of inversion reactivated the Abakaliki and Onitsha highs (Unomah and Ekweozor, 1993...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 4–6, 2015
Paper Number: SPE-178275-MS
... Abstract Key factors affecting wax deposition in sub-cooled pipelines (wall (coolant) temperature (A), inlet oil temperature (B), and the percentage of wax inhibitors in the crude (C), and oil flow rate (D)) were experimental studied using the fabricated flow loop rig designed to simulate...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 4–6, 2015
Paper Number: SPE-178358-MS
... Exhibition water injector injection impairment society of petroleum engineers mechanism application van den Hoek reservoir formation damage deposition frac-pack injector interpretation fracture surveillance technique kbwpd producer indication injectivity reservoir pressure Injector...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 5–7, 2014
Paper Number: SPE-172443-MS
... Figure 4b De Boer Plot showing the crude state Abstract Flow Assurance – a term used to evaluate the effects of fluid hydrocarbon solids (i.e. asphaltene , hydrate and wax) and their potential to disrupt flow of hydrocarbon fluids in the flow lines due to deposition in the flow system...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 5–7, 2014
Paper Number: SPE-172469-MS
... of the particles, to obtain the optimum transported particle size profile in the formation. Furthermore, the average size of transportable particulates and their total volumes are then obtained and used to determine the volume of deposits which is in turn used to develop a new injectivity decline model...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 5–7, 2014
Paper Number: SPE-172844-MS
... Abstract Reliable technical methods for wax build up control in pipelines are critical to the production of crude oil in deep cold water environments. The effectiveness of groups of acrylate ester copolymers of varying alkyl side chains as pour point depressants (PPD) and as wax deposit...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 5–7, 2013
Paper Number: SPE-167515-MS
... Abstract The ability to determine the severity of wax deposition is an extremely important issue, particularly in the design and development of deepwater oilfields. Though much progress has been made in the last decades to better the understanding of this complex process, yet the ability...
Proceedings Papers

Paper presented at the Nigeria Annual International Conference and Exhibition, August 6–8, 2012
Paper Number: SPE-162943-MS
... in industrial oil production flow assurance include waxing (paraffinic deposition), asphaltenes deposition, sand ingress, and hydrate formation; these conditions tend to foul/block off production equipment during normal hydrocarbon production or transportation. While the relative importance of other types...

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