| dc.description.abstract | Sri Lanka is expected to initiate offshore oil and gas exploration in the near future. Sri Lanka’s Petroleum Resources Development Secretariat (PRDS) has identified several blocks for offshore oil exploration in the Mannar Basin and Cauvery Basin as per the recent investigation. Downhole monitoring technologies have advanced considerably in terms of availability, reliability, performance and costs. In downhole monitoring systems deployed in the oil and gas industry measures at various parameters, such as the geological parameters are quantity, location, contents, level of lubricant and weight. Also, measures the environmental and reliable measurements such as downhole flow rate, density and water cut monitoring. Pressure and Temperature parameters are the most important and essential parameters in offshore wells. In this short paper, we discuss the existing wireless systems for downhole monitoring such as Mud Pulse Telemetry (MPT), Radio Frequency transmission and acoustic transmission. Further explanation about the comparison of the existing wireless systems will be also presented. Restrictions of existing technologies require a new and reliable wireless solution for real-time downhole monitoring. As a potential future avenue, we introduce a Visible Light Communication (VLC) based downhole monitoring scheme and, then, discuss the advantages of this system over the existing systems. According to the literature survey, RF transmission is identified as an established system in the oil industry nowadays. However, it is a high cost and power-hungry technique. However, the VLC system can be implemented with a low cost and use without power amplifiers. In this paper, we provide details of the existing schemes and offer a survey for all other competitive schemes in the literature for wireless downhole monitoring schemes. | |
