«Onshore and offshore oil and gas well construction»

Optimization of the system for controlling the development of the PK1 reservoir of the oil and gas condensate field by retrofitting tubing string by gas inflow control device

UDC: 622.279.6
DOI: -

Authors:

¹ St. Petersburg Mining University of Empress Catherine II, St. Petersburg, Russia

Keywords: uneven rise of gas-water contact (GWC) level and premature water-flooding, gas inflow control device, calculation of the maximum water-free flow rates of wells, calculation of the time of the water-free period of wells operation, dependence of the period of gas wells water-free operation on the conditional radius of the supply circuit, building of a sector three-dimensional hydrodynamic model, calculation of technological indicators development on a three-dimensional hydrodynamic model

Annotation:

The effective operation of gas deposits is complicated by the insufficient quality and quantity of data obtained as part of development control, which can lead to rapid and uneven watering of a reservoir. There are many reasons for water manifestation in extracted products. The main reason for water flooding of massive deposits is bottom water, which, due to high vertical permeability, can draw to the bottom-hole zone, forming a cone of water, and enter the well, thus contributing to increased water production and early watering. Technical problems such as cross-flows and casing strings defects can also cause water cones. Improving the control and monitoring system as well as preventing the formation of cones at the well bottom as a result of installing additional equipment in the well, can solve this problem. The authors of the article selected an object of study (a gas reservoir of an oil and gas condensate field), studied the specific features of its geological structure and development history, on the basis of which preliminary conclusions were made about the causes of premature water flooding and uneven rise of the gas-water contact (GWC). Calculation of technological parameters and hydrodynamic modeling were performed and the economic efficiency of using this device was determined.

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