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Keywords: deposition
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Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200704-MS
... Abstract Barium sulfate is one of the most serious problem in mineral scale precipitation, the deposition of barite on the surface is a concern to flow assurance in the oil well. The scale formation is typically predicted by thermodynamic solubility limit. However, it is believed...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200668-MS
... conceptual model unconventional production unconventional reservoir hydraulic fracturing upstream oil & gas unconventional play deposition scale prediction field fluid residence time case study scale management scale inhibitor treatment scale formation society of petroleum engineers...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200655-MS
... for controlling scale deposition increase significantly. The formation of the more common mineral scales (barium/strontium sulfate, calcium carbonate, and calcium) is expected in these produced waters and often other challenges associated with high TDS brines include the propensity for halite (sodium chloride...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200670-MS
... ineffective to prevent barite deposition in the typical conditions for unconventional gas production. Morever, gypsum and iron carbonate are not effectively inhibited by typical threshold inhibitors, probably because of relatively higher solubility of gypsum and insoluble iron(II)-inhibitor salts ( Al-Borno...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200714-MS
... concentration pipe scale formation production chemistry upstream oil & gas deposition pressure drop pressure distribution valve orifice particle size distribution scale inhibition precipitation flow rate experiment orifice reynolds number valve In the oil industry, inorganic scale...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200705-MS
... to study the effect of permeability on scale inhibition and deposition, sandpacks with higher permeability were also prepared and used for test. Figure 2 Schematic of coreflood experimental apparatus In this study, phosphino polycarboxylic acid (PPCA) is used as barium sulfate inhibitor...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200664-MS
... particles (5-8 microns) which pass through the production system, preventing heterogeneous nucleation and deposition. This paper summarises an experimental programme to examine the proposed mechanism of operation of the EMD under controlled laboratory conditions. Flow experiments were performed under...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200689-MS
... Abstract This work provides a preliminary study of solids adherence on the surfaces of a sliding-sleeve valve (SSV), aiming to mimic inorganic scaling process. SSVs assembled in production sites subjected to water flooding might suffer from scale deposits of barium sulphate. Scaling may result...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190696-MS
... and no deposition before the induction time. However, in this study, we observed that most of the barite deposition either formed at the beginning of the reaction tubing or where the temperature increased, while classical nucleation theory would predict no deposition. The result suggests that the classical...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190700-MS
... saturation from equilibrium and heating the solution until a state of oversaturation is achieved. Experiments were carried out in tubes made of stainless steel, mild steel, and PTFE, and the deposition kinetics and mineralogy of the scale deposits were analyzed. The rate of scale inhibition was also...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190706-MS
... on the main methods used in the industry such as the injection of LSSW, smart well technology with active ICD and SS, coatings, careful mixing of produced gases and brines and re-injection and in situ scale deposition deep in the reservoir. SRP uses nano filtration membranes to remove the sulphates...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190707-MS
... Figure 1 Molecular structure of a) triethylene glycol (TEG), b) monoethylene glycol (MEG), c) methanol (MeOH) There is no standard method for monitoring halite scale deposition and evaluating inhibitors against it. The static bottle test is one of the most common and efficient...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190709-MS
... with clear success in inhibiting sulfide deposition and establishing stable production. Also presented are the development methods and chemical synthesis details for the development of a squeezable product. A novel fast screening technique is detailed as well as a new type of residual monitoring method...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190731-MS
... Abstract Deposition of inorganic scale on downhole completion equipment contributes to significant downtime and loss of production within the oil and gas industry. High temperature/high pressure (HT/HP) fields have reported build-up of lead sulfide (PbS) scale as a consequence of reservoir...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190736-MS
... of halite squeeze treatments from two different fields; an ultra hot (420°F) deep (17,460ft) dolomite gas well with severe halite deposition that required water washing every 48-72 hours and a shallow (6,000ft) hot (250°F) shale with erratic production where several water washes, work-overs and varied shut...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190748-MS
... Table 2 Test Design of Corrosion Coupon Test Coupons 1 2 3 Sulfide (mg/L) 0 100 200 Fe 2+ (mg/L) 0 0 0 Abstract Iron sulfide deposition on downhole tubular is a ubiquitous phenomenon in sour gas wells, especially for these producing from high temperature...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190737-MS
... is somewhat oversaturated (Saturation Ratio, SR >1) but the driving force is not sufficiently large and so the deposition is kinetically "slow". The industry response to this situation has been to come up with some simple heuristics based on field observations, and "rules of thumb" have been developed...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190712-MS
... Abstract This paper describes a number of different evaporative processes which can cause flow assurance issues within oilfield production systems including chemical application via gas lift systems, halite deposition and gunking in injection lines. Similarities and differences are described...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190749-MS
... Figure 7 Schematic and location of uncoated and EN-coated joints in a SAGD well The optical images ( Fig 8 A ) of all the samples show that EN-coated samples have cleaner surfaces with less materials adhered, compared with the uncoated samples. However, there are still some depositions...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190730-MS
... Abstract There is an increasing demand in using intelligent well completions such as ICV (Inflow Control Valve) due to increased reservoir and production complexity in subsea fields. Failure of a functional ICV due to scale deposition can cause severe production impairment, R&D efforts...

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