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School of Petroleum Engineering

Engineering and Technology

Materials Today: Proceedings

Modifications of petroleum industry effluent treatment Method: An approach for quality improvement of process water for ASP flooding and chemical EOR

The treatment and disposal of oil field-produced water from pay zones presents a variety of issues for the hydrocarbon industry. Significant laboratory experimentation is carried out in this research program to design optimized dosages of oil field chemicals to design a water treatment plant for a thin stacked reservoir containing heavy viscous oil. When produced water is produced by pay zones containing heavy viscous oil, treatment can be difficult. For a better understanding of treatment procedures, chemical properties and physical properties of produced water are analysed. For re-injection of producing water to maintain reservoir pressure, the produced water must be compatible with the rheology of the reservoir under study. If the water leaving oil fields is untreated, it creates problems with injectivity loss and formation degradation, contaminating local groundwater resources and causing a significant environmental disaster. When significant amounts of oil field water is generated, the cost of water treatment chemicals rises dramatically. As a result, after examining the ionic concentration of generated water, this research effort recommends optimizing chemical dosing. Various filtration tests for effective rock fluid compatibility, include series, care, and coarse. The entire water treatment system was designed on prescribed treatment chemical dosages. The primary phase of generated water purification in this study relies heavily on the water treatment technologies of coagulation and flocculation. This processed oil field-produced water is ideal for Enhanced Oil Recovery such as Alkali Surfactant-Polymer flooding. © 2023 Elsevier Ltd. All rights reserved.

Dose optimization of oil field produced water and advanced water treatment for heavy viscous oil

One of the major problems faced by the oil industry is the problem of unwanted water production. High rates of unwanted water production in a well can make the well uneconomical and reduces the good lifespan. The paper studies the problems faced by a field experiencing a large amount of unwanted water production in the majority of its wells. The data gathered from one of the Indian Western Offshore Oil Fields have been analyzed to identify the problems faced in several wells. Also, the initiatives taken by the company to control high water cut has been discussed. Understanding the water shut-off methods used for mitigating the problem of high water cut and their efficiency, the availability of various Inflow Control Systems for well completion to prevent unwanted water production is studied. Studying the performance of these systems from numerous case studies and literature surveys for mitigating unwanted water production, the paper provides a complete strategy for water control in horizontal wells for different reservoir properties and for future redevelopment plan of the Indian Western Offshore Field followed by the conclusion. © 2022 The authors and IOS Press.

School of Chemical Engineering

Advances in Transdisciplinary Engineering

Completion Strategy for Water Control in Horizontal Wells of an Indian Western Offshore Oilfield: A Case Study

Environmental pollution has been determined to be the root cause of a large number of deaths and illnesses around the world. Heavy metals in wastewater have been a major problem in recent years due to their hazardous effects. Human health, living resources, and ecological systems are all at risk because of the increasing levels of hazardous metals that are being released into the environment as industrial wastes. Heavy metals in wastewater are strictly regulated by environmental organizations and authorities due to their harmful health impacts and toxicological properties. As a result, adequate safeguards must be taken, and technologies for detecting, quantifying, and removing heavy metals from effluent waterways must be developed. The most prevalent method for removing heavy metals from wastewater is adsorption. As a result of recent advances in adsorption technology, it's a potential wastewater treatment method. In recent years, the utilization of agricultural waste materials has grown in popularity. Due to their physicochemical and nontoxic properties, agricultural wastes have the potential to be employed as adsorbents. A low-cost adsorbent made from agricultural waste is one of the most common applications for agricultural waste products. This review provides an overview of applications for various agricultural waste materials added to their ability to absorb heavy metals. The different properties of agricultural waste materials are also summarized. The review article also covered the treatment procedure's effectiveness, difficulties, effects on the environment and public health, and other elements. The process parameters, the adsorption isotherm, and the adsorption kinetics are all thoroughly discussed. In this review, it has been shown that several heavy metals can be effectively removed from wastewater using inexpensive adsorbents. © 2022

A review on application of low-cost adsorbents for heavy metals removal from wastewater

Produced water is a complex mixture of organic and inorganic compounds. In this research paper, the output is not theoretical as the work is implemented in the field to bring the produced water generated from the pay zone into a desirable range. The produced water from the pay zone is challenging as well as plays a crucial role in the oil and gas industry. The produced water contains many impurities which are not desirable for injection into the well to bring them into a desirable range study of Physico-chemical parameters and biological parameters of the raw effluent has been done experimentally. The water produced was treated effectively under suitable methods and filters viz, coagulation and flocculation by optimizing dose as per requirement, and various filtration techniques like selective filtration, series filtration, and cerini filtration. The fluid compatibility test was carried out to determine the scale and corrosion and to check the permeability retention of the XZ formation to make treated effluent water fit for injection. The treatment design was implemented properly to achieve desirable parameters for a desirable range. © 2022 Elsevier Ltd. All rights reserved.

Optimizing produced water quality for enhancing oil recovery

Due to increase in population coupled with mining, extraction, and use of various metals as different industrial and household materials, the load of toxic metal pollution in the environment is increasing. Toxic metals can be hazardous even at very low concentration. When they get into water supplies and aqueous environments the health of plants and animals as well as humans can be impaired. The demand of chromium has been increasing globally because of its extensive use in various metallurgical, chemical, and leather tanning industries due to its various physico-chemical properties. The adsorption of toxic metals is strongly dependent on pH, temperature, contact time, and initial adsorbate concentration. The studies on adsorption were conducted by varying various parameters such as contact time, amount of adsorbent, temperature, and agitation speed. The increase of adsorbent dose provides more surface area for adsorption hence increased the adsorption capacity of the adsorbent. Agitation speed has little effect on adsorption. Experimental data for the adsorbent was fitted to different isotherm models such as Freundlich and Langmuir isotherm. Langmuir adsorption isotherm was employed in order to evaluate the optimum adsorption capacity of the adsorbent. It was concluded that adsorbent prepared from Peas Shell can be used for removal of Cr(VI) from wastewater. © 2018 by Apple Academic Press, Inc. All rights reserved.

Novel Water Treatment and Separation Methods: Simulation of Chemical Processes

Investigation on elimination of Cr(VI) from wastewater by powdered shell of peas as adsorbent

Pure water is very important for human life. All agriculture, industrial and commercial sector need water of required quality. Pollution of water is due to all these sectors. Waste from all sectors is entering freshwater everyday. The demand for water is increasing while water availability is less because of improper waste disposal. The removing pollutant from all water resources is costly so there is need for new technologies, which are less expensive, require less maintenance and are energy effective. Chromium is widely used in electroplating, alloying, leather tanning, corrosion protection, etc. [1]. Chromite mining and processing units produce waste and effluent containing chromium in two oxidation states, for example, Cr(VI) and Cr(III) in aqueous solution. Cr(VI) oxidizing properties is dangerous due to carcinogenicity [2]. The potable water allows only 0.05 mg/lit Cr(VI) because of toxicity [3]. Higher concentrations are in the industrial and mining effluents, which crosses permissible limit. © 2017 by Apple Academic Press, Inc.