FIELD: oil and gas industry.
SUBSTANCE: group of inventions relates to oil and gas industry, in particular, to equipment and works in drilling wells with control of pressure. To implement the method: determine required setting pressure in the well, add a correction to the setting pressure if the actual pressure in the well deviates from the setting value by preset value, and adjust the flow rate control device in such a way that the actual pressure in the well becomes closer to the setting one taking the correction into account. Well system may include flow rate control device, which controllably limits the flow rate from the well, and a control system, which determines the required setting pressure in the well, compares the setting value to the actual pressure in the well and, at the specified level of deviation of the actual pressure in the well from the setting value, adds a correction to the setting value, due to which the control system regulates the flow rate control device and therefore brings the actual pressure in the well to the set pressure value with the correction.
EFFECT: higher accuracy of pressure regulation is achieved.
20 cl, 6 dwg
