Известия Томского политехнического университета: Инжиниринг георесурсов (Mar 2020)
METHODOLOGY FOR ASSESSING THE EXPECTED STARTING FLOW RATES OF HORIZONTAL WELLS IN GAS AND GAS CONDENSATE FIELDS
Abstract
The relevance of research is caused by the necessity for oil and gas sector to make the correct forecast of production capabilities of the wells planned for drilling both at those being developed and the new ones which are being planned putting into commercial operation. Estimation of achievable production rates during planning a field development strategy allows not only evaluating the projected production level, but as well making a decision on improving the strategy for launching and developing fields. A sustainable planning reduces the negative impact on the environment and leads to energy and resource conservation. Moreover, it minimizes as well the risks of failure to achieve targets, which results in constant adjustment of production levels downwards, accelerating the launch of new wells, which increases the negative impact of drilling on the environment, reduces the standard-recommended time for activities and the quality of well construction. The main aim of the study is to assess the reservoir potential in a particular zone during selecting the location of the project fund of wells before drilling, leading to more sustainable planning of hydrocarbon production volumes determined based on calculations on the simulation model. Objects: hydrocarbon fields under development and those, putting into commercial operation (new). Methods: individual approach to each well during determination of the initial production rates of wells at the engineering design stage of a field development. Results. The authors have developed the new methodology for identifying the starting production rates of project wells, which allows more accurate prediction of the initial production rate of a horizontal well in a specific area in an unreleased or already developing oil, gas and gas condensate field.
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