42 Providing subscription-based temporary use of on-line nondownloadable software for oil well management and optimization; Providing subscription-based temporary use of on-line nondownloadable software for predicting, identifying, and monitoring the presence of gas in artificially-lifted wells; Providing subscription-based temporary use of on-line non-downloadable software for remote surveillance of wellsites; Providing subscription-based temporary use of on-line nondownloadable software for monitoring and mitigating gas-related issues in downhole pumping systems; Providing on-line non-downloadable software for oil well management and optimization; Providing on-line nondownloadable software for predicting, identifying, and monitoring the presence of gas in artificially-lifted wells; Providing on-line non-downloadable software for remote surveillance of wellsites; Providing on-line nondownloadable software for monitoring and mitigating gas-related issues in downhole pumping systems