Managing Paraffin Wax Deposition in Oil Wells - Related Problems in Nigerian Oil Fields

2012 ◽  
Author(s):  
C. Ijogbemeye Oseghale ◽  
E.J. Akpabio
Keyword(s):  
Oil Wells ◽  
Oil Fields ◽  
Paraffin Wax ◽  
Wax Deposition

On the effect of wax content on paraffin wax deposition in a batch oscillatory baffled tube apparatus

2008 ◽  
Vol 137 (2) ◽  
pp. 205-213 ◽  
Author(s):  
Lukman Ismail ◽  
Robin E. Westacott ◽  
Xiongwei Ni
Keyword(s):  
Paraffin Wax ◽  
Wax Deposition ◽  
Wax Content

NUMERICAL MODEL FOR WAX DEPOSITION IN OIL WELLS

2001 ◽  
Vol 19 (5-6) ◽  
pp. 587-608 ◽  
Author(s):  
Edgar Ramirez-Jaramillo ◽  
Carlos Lira-Galeana ◽  
Octavio Manero Brito
Keyword(s):  
Numerical Model ◽  
Oil Wells ◽  
Wax Deposition

scholarly journals Two-Stage Geothermal Well Clustering for Oil-to-Water Conversion on Mature Oil Fields

Geosciences ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 470
Author(s):  
Josipa Hranić ◽  
Sara Raos ◽  
Eric Leoutre ◽  
Ivan Rajšl
Keyword(s):  
Spatial Arrangement ◽  
Oil Wells ◽  
Oil Field ◽  
Oil Fields ◽  
Two Stage ◽  
Oil Companies ◽  
Geothermal Potential ◽  
Clustering Approach ◽  
Water Cut

There are numerous oil fields that are approaching the end of their lifetime and that have great geothermal potential considering temperature and water cut. On the other hand, the oil industry is facing challenges due to increasingly stringent environmental regulations. An example of this is the case of France where oil extraction will be forbidden starting from the year 2035. Therefore, some oil companies are considering switching from the oil business to investing in geothermal projects conducted on existing oil wells. The proposed methodology and developed conversions present the evaluation of existing geothermal potentials for each oil field in terms of water temperature and flow rate. An additional important aspect is also the spatial distribution of existing oil wells related to the specific oil field. This paper proposes a two-stage clustering approach for grouping similar wells in terms of their temperature properties. Once grouped on a temperature basis, these clusters should be clustered once more with respect to their spatial arrangement in order to optimize the location of production facilities. The outputs regarding production quantities and economic and environmental aspects will provide insight into the optimal scenario for oil-to-water conversion. The scenarios differ in terms of produced energy and technology used. A case study has been developed where the comparison of overall fields and clustered fields is shown, together with the formed scenarios that can further determine the possible conversion of petroleum assets to a geothermal assets.

Technical solution for supplying a wax (deposition) inhibitor to a tubing string of oil wells

2020 ◽  
pp. 82-88
Author(s):  
S. E. Cheban ◽  
M. D. Valeev ◽  
S. A. Leontiev ◽  
A. F. Semenenko
Keyword(s):  
Oil Wells ◽  
Field Conditions ◽  
Technical Solution ◽  
Oil Well ◽  
Wax Deposition ◽  
Chemical Reagents ◽  
Tubing String

For prevention and combating paraffin deposites different chemical regents are widely used (wax inhibitors). In field conditions many ways of chemical regents dosing are applied. Injection of chemical reagents in oil well tubing is the most effective for wax inhibitors; in this case consumption of reagents is largely decreasing by comparison with chemical reagents dosing through the well-casing annulus. The article describes design and operating processes of technology of wax inhibitor dosing in electric centrifugal well pumps installation. This process opens fluid access to oil well tubing at higher pressure at the wellhead. Reagent RT-1-3 is used as aromatic wax inhibitor. In RT-1-3 there is butylbenzene fraction of Kazanorgsintez PJSC containing a mixture of butylbenzene, isopropylbenzene and polyalkylbenzene.

Waterflooding Viscous Oil Reservoirs

2009 ◽  
Vol 12 (05) ◽  
pp. 689-701 ◽  
Author(s):  
Dennis Beliveau
Keyword(s):  
High Water ◽  
Oil Field ◽  
Oil Fields ◽  
Wax Deposition ◽  
Fractional Flow ◽  
Viscous Oil ◽  
The Usa ◽  
Barmer Basin ◽  
Development Plans

Summary In 2004, the large Mangala, Aishwariya, and Bhagyam oil-fields were discovered in the remote Barmer basin of Rajasthan, India. The fields contain light, paraffinic crude oils with wax-appearance temperatures only 5°C less than reservoir temperatures and in situ viscosities that range from 8 to 250 cp. As these were the first significant hydrocarbon discoveries in this part of India, there were few analog performance data available. Development plans for the fields are based on hot waterflooding to prevent problems with in-situ wax deposition, with production startup expected in 2009. This article presents some waterflood results from viscous-oil fields around the world, benchmarks the expected performance of the newly discovered Rajasthan fields to this database, and discusses several issues associated with waterflooding viscous oils. Given that the Rajasthan oils have some properties that might be considered "unusual" and potentially troublesome for waterflooding and that there are no long-term production data or a history match of waterflood performance in hand, these benchmarks were considered important reality checks. In fact, fields with similar or much higher viscosities are waterflooded routinely with excellent recoveries in Canada, the USA, and elsewhere. Introduction Waterflooding is sometimes dismissed as an ineffective process for a viscous-oil field, with development plans focused on more-exotic and -expensive recovery mechanisms such as chemical or thermal processes. However, basic application of Darcy's law and fractional flow theory, combined with operations that focus on production at very high water cuts, clearly shows that viscous-oil fields can yield reasonably good ultimate recoveries under waterflood.

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