Testing of Environmental Friendly Paraffin Removal Products

Armacanqui, J. Samuel; Eyzaguirre, Luz; Flores, Merino; Zavaleta, D. Ernesto; Camacho, F. E.; Grajeda, A. W.; Alfaro, A.; Viera, Marisa

doi:10.2118/181162-ms

Cited by 9 publications

(1 citation statement)

References 7 publications

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“…In other words, organic scales deposition is also influenced by as a result of physicochemical and thermodynamic (volume, temperature, PH and pressure) changes in properties of the produced fluid. Scale deposition can occur (volume, temperature, pH and pressure), which can deposit at any part of the production system (Armacanqui et al, 2016). Sometimes organic scale deposition is directly connected to the heavy crude production nature of a field that is somehow globally distributed.…”

Section: Introductionmentioning

confidence: 99%

An experimental approach to the descaling of production tubing using high pressure flat fan nozzles

Yar’Adua¹,

Abbas²,

Suleiman³

et al. 2021

J. Petroleum Gas Eng.

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The mechanical approach of utilizing high-pressure water for scale removal has gained wider acceptance by multinationals despite facing poor downhole performance challenges (cavitation) that need abrasion compensation (sand) with side effect of jeopardizing the integrity of the well completions. The replacement of sand with sterling beads was excellent with good post descaling well completion integrity at the expense of environmental complexity. While the recent single nozzle, solid free aerated jetting descaling technique was characterized with poor scale coverage and high descaling time. This investigation presents the novel technique of scale removal utilizing multiple high-pressure flat fan nozzles at different distances, nozzle configurations and injection pressure to remove soft scale sample made of paraffin. The scale shaped in two different patterns of hollow and solid signifying different growth stages of paraffin in production tubing. The results at 25 mm stand-off distances showed that the scale removal was within the range of 0.8 to 42.8 g (for hollow shape scale) and 0.3 to 5.2 g (for solid shape scale) at 4.8 MPa with different nozzle configurations. Increasing the injection pressure to 6 MPa removed more scale within the range of 1.1 to 93.7 g (for hollow shape scale) and 0.7 to 7.3 g (for solid shape scale). Moreover, at 10 MPa injection pressure the scale removal was within the range of 1.1 to 253.8 g (for hollow shape scale) and 1.1 to 103.7 g (for solid shape scale). This result will provide a practical approach to the removal of organic scales at varying descaling conditions of injection pressure, standoff distance and nozzle configurations.

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Section: Introductionmentioning

confidence: 99%

An experimental approach to the descaling of production tubing using high pressure flat fan nozzles

Yar’Adua¹,

Abbas²,

Suleiman³

et al. 2021

J. Petroleum Gas Eng.

View full text Add to dashboard Cite

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Managing Oil Fields in a Low Oil Price Environment

Armacanqui¹,

Eyzaguirre²,

Lujan³

et al. 2016

Day 2 Thu, October 20, 2016

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Cycles of Low Oil Prices have occurred so far three times in the last two decades, and it has become evident that it is a feature of the Industry. In the low oil price scenario a condition arises whereby the break even value of the field is higher than the sales price. The traditional response recipes have been so far a resize of the activity involving layoffs and cancelling or putting projects indefinitely on hold. A closer look tough shows that while the average production cost of the barrel may be non economical, still certain oil generating activities can yield profitable oil. On the other side stream lining the process for both surface and down hole activities incorporating cost effective innovative solutions and best practices can reduce the production cost. Further looking into the capital expenses with critical eyes, performance oriented contracts, merging from purchasing to leasing, among others can result in additional savings. Likewise goal alignment to explore for creative models jointly with the Product and Service Providers provides another stream of cost optimization. This paper presents a viable alternative that allows E & Ps to refocus on cost effective measures to keep profitability or at least to minimize loses. Specific real case examples are shared. For heavy and Extra heavy Oil Fields the impact of above is emphasized due to the lowered marked price that the higher oil viscosity triggers.

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Improvements in EOR Screening, Laboratory Flood Tests and Model Description to Effectively Fast Track EOR Projects

Tafur¹,

Rojas²,

Hassan

2017

Day 3 Wed, November 15, 2017

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One of the operator's main concerns on EOR projects is related to the time to reach the pilot test stage. This paper aims to support a fast tracking of the implementation of Chemical EOR Projects. The proposed techniques and tools shorten this time and reduce cost associated to carry out key phases such as the EOR Screening, the Laboratory Core Flood and the Geological and Reservoir Modeling by making use of simple yet effective techniques. A comprehensive Integrated and systematic Workflow is presented that allows a reduction of associated uncertainties and the implementation time and to serve as a tool for a comprehensive EOR Project Management. A developed EOR-Screening System utilizing algorithms of neural networks and genetic algorithms, enabled a rapid and reliable selection of the most appropriate EOR method from among 8 available methods (steam injection, miscible/immiscible CO2, miscible hydrocarbon, in-situ combustion, polymer injection, surfactant injection y ASP,). The EOR Screening method was applied to fields located in the Marañon basin of the Peruvian jungle fields of heavy and light crude, resulting in Steam-Injection and chemical ASP Injection as the most appropriate methods. The problematic of multiple Chemicals to be pre-selected in flood experiments is addressed by using a testing loop that incorporates a developed capillary model that utilizes predefined granulated sand in a glass holder that enables multiple tests in short time. Sets of Laboratory Flood Tests were carried out in 3 core flow model types; a capillary tube and a synthetic solid core, both showed good repeatability and significantly reduced time and cost for Core Flood Tests. Target reservoirs are usually real core constrained and synthetic cores are used, however those have a wide range of permeability rarely matching the required ones. Therefore, a solid synthetic core was developed based on a blend of sand, and chemically neutral additives that allow adjusting the permeability as needed. Both the Capillary model and the synthetic solid core allowed a fast qualitative and quantitative evaluation of multiple chemical EOR products. Specific geo-reservoir description best practices from prior EOR field applications are shared such as defining non-sealing faults, proper candidate selection prior numerical simulation, in the environment of data scarcity among others. Those aim to fast tracking EOR Projects. Specific Improvements to Fast Track EOR Projects are presented. The first one relates to a novel EOR Screening Method that expands the current systems by including more input variables and EOR Methods. The second one relates to laboratory core flood experiments that are improved by adding a capillary model to preselect the chemical and a solid core of adjustable permeability range to run slug size optimization experiments. The geological-reservoir model description is enhanced by using techniques that enable both defining nearby non-sealing faults and proper selection of the production-injection candidate wells using well-field production-pressure history, prior of using numerical simulation.

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Testing of Environmental Friendly Paraffin Removal Products

Cited by 9 publications

References 7 publications

An experimental approach to the descaling of production tubing using high pressure flat fan nozzles

An experimental approach to the descaling of production tubing using high pressure flat fan nozzles

Managing Oil Fields in a Low Oil Price Environment

Improvements in EOR Screening, Laboratory Flood Tests and Model Description to Effectively Fast Track EOR Projects

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