Optimization Method for Line Pipe Selection & Sizing (A case study from Saudi ARAMCO water injection system)

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper OTC 30407, “Case Study of Nanopolysilicon Materials’ Depressurization and Injection-Increasing Technology in Offshore Bohai Bay Oil Field KL21-1,” by Qing Feng, Nan Xiao Li, and Jun Zi Huang, China Oilfield Services, et al., prepared for the 2020 Offshore Technology Conference Asia, originally scheduled to be held in Kuala Lumpur, 2–6 November. The paper has not been peer reviewed. Copyright 2020 Offshore Technology Conference. Reproduced by permission. Nanotechnology offers creative approaches to solve problems of oil and gas production that also provide potential for pressure-decreasing application in oil fields. However, at the time of writing, successful pressure-decreasing nanotechnology has rarely been reported. The complete paper reports nanopolysilicon as a new depressurization and injection-increasing agent. The stability of nanopolysilicon was studied in the presence of various ions, including sodium (Na+), calcium (Ca2+), and magnesium (Mg2+). The study found that the addition of nanomaterials can improve porosity and permeability of porous media. Introduction More than 600 water-injection wells exist in Bohai Bay, China. Offshore Field KL21-1, developed by water-flooding, is confronted with the following challenges: - Rapid increase and reduction of water-injection pressure - Weak water-injection capacity of reservoir - Decline of oil production - Poor reservoir properties - Serious hydration and expansion effects of clay minerals To overcome injection difficulties in offshore fields, conventional acidizing measures usually are taken. But, after multiple cycles of acidification, the amount of soluble substances in the rock gradually decreases and injection performance is shortened. Through injection-performance experiments, it can be determined that the biological nanopolysilicon colloid has positive effects on pressure reduction and injection increase. Fluid-seepage-resistance decreases, the injection rate increases by 40%, and injection pressure decreases by 10%. Features of Biological Nanopolysilicon Systems The biological nanopolysilicon-injection system was composed of a bioemulsifier (CDL32), a biological dispersant (DS2), and a nanopolysilicon hydrophobic system (NP12). The bacterial strain of CDL32 was used to obtain the culture colloid of biological emulsifier at 37°C for 5 days. DS2 was made from biological emulsifier CDL32 and some industrial raw materials described in Table 1 of the complete paper. Nanopolysilicon hydrophobic system NP12 was composed of silicon dioxide particles. The hydrophobic nanopolysilicons selected in this project featured particle sizes of less than 100 nm. In the original samples, a floc of nanopolysilicon was fluffy and uniform. But, when wet, nanopolysilicon will self-aggregate and its particle size increases greatly. At the same time, nanopolysilicon features significant agglomeration in water. Because of its high interface energy, nanopolysilicon is easily agglomerated, as shown in Fig. 1.

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Transforming Water Injection Process With Real Time Automation

10.2118/207577-ms ◽

2021 ◽

Author(s):

Muhammad Zakwan Mohd Sahak ◽

Eugene Castillano ◽

Tengku Amansyah Tuan Mat ◽

Maung Maung Myo Thant

Keyword(s):

Oil Recovery ◽

Capital Investment ◽

Water Injection ◽

Optimal Operation ◽

Near Miss ◽

Injection System ◽

Injection Technique ◽

Manual Operation ◽

Injection Process ◽

Oil Rim

Abstract For mature fields, water injection is one of the widely deployed techniques to ensure continuous oil recovery from the reservoir by maintaining the reservoir pressure, oil rim and pushing the oil from injection to production wells. Thus, it is critical to ensure a continuous and reliable operation of water injection to have consistent and sustainable rate. This paper demonstrates the new approach, utilizing automation and digital technology providing operational improvement and reduction in unplanned production deferment (UPD). One of the methods to effectively manage the water injection operation is via automation of injection process, especially since most of the water injection facilities still rely heavily on manual operation. First, a discussion on typical water injection technique is discussed. Challenges and sub-optimal operation of water injection processes within the company and industry are analysed. Then, the designing of a fully automated water injection system, such as equipment availability and constraints in matching and responding to well injection requirement are demonstrated. While an immediate adoption of process automation to mature assets may be faced with challenges such as system readiness, hardware availability, capital investment and mindset change, a step-by-step approach such as guided operation and semi-auto operation is explored as preparation prior to a full automation roll-out. With the shift from manual operation reliance to automation, the response time to process changes is improved leading to reduction in near-miss and trip cases, and minimum unplanned deferment.

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Assessment of Condensate Recovery Improvement Through Gas and Water Injection: A Case Study for a Large Heavily Depleted Very Rich Gas Condensate Field in the Sultanate of Oman

10.2118/192684-ms ◽

2018 ◽

Cited By ~ 1

Author(s):

M. Cobanoglu ◽

I. Shukri ◽

R. Omairi

Keyword(s):

Water Injection ◽

Gas Condensate ◽

Sultanate Of Oman

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A novel multi-objective Dynamic Programming optimization method: Performance management of a solar thermal power plant as a case study

Energy ◽

10.1016/j.energy.2018.11.079 ◽

2019 ◽

Vol 168 ◽

pp. 796-814 ◽

Cited By ~ 13

Author(s):

Javad Mahmoudimehr ◽

Parvin Sebghati

Keyword(s):

Dynamic Programming ◽

Power Plant ◽

Performance Management ◽

Thermal Power Plant ◽

Thermal Power ◽

Optimization Method ◽

Method Performance ◽

Multi Objective ◽

Solar Thermal Power

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Large-Diameter Line Pipe Expanding Process

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.192.180 ◽

2012 ◽

Vol 192 ◽

pp. 180-184 ◽

Cited By ~ 1

Author(s):

Ai Xia He ◽

Rong Chang Li

Keyword(s):

Process Parameters ◽

Large Diameter ◽

Dimensional Accuracy ◽

Optimization Method ◽

Main Process ◽

Shape Accuracy ◽

Line Pipe ◽

Factors Affecting ◽

Array Optimization

Mechanical expanding process for large diameter line pipe, a detailed analysis of factors affecting the quality of the final products of the mechanical expansion and proposed optimization using orthogonal array optimization method, as an indicator of dimensional accuracy and shape accuracy of the products, combination of a variety of specifications of mechanical expanding products, the main process parameters to be optimized. Analysis and discussion of results, revealing the degree of influence of various factors on the quality of the final product, and gives the optimum combination of the results. Experiments show that the combination of optimized process parameters, and more help to improve the accuracy of the size and shape of products.

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