SU883369A1 - Well-operating method - Google Patents

Description

(54) METHOD OF OPERATING WELLS

one

The invention relates to the oil and gas industry and can be used to increase production rates of oil or gas wells using gas lift.

Izvesgao device for automatic regulation of the gaslift well operation mode 1. There is also known a method of operating a well using regulating the supply of a working agent to a fountain and separating a product into a well and a gaseous well in the wellhead 2.

The method of operation is carried out by maintaining a predetermined flow rate or pressure of the groove in the pipeline supplying additional gas to the well by stabilizing the pressure drop across the measuring washer installed in the pipeline bringing the gas to the well by adjusting the opening degree of the fitting lines.

The disadvantages of the regulation method are the high flow rate of the gas supplied from the switch.

surface, and a decrease in well production due to the fact that the inflow of gas and liquid into the well 1 and the pressure in the flow line change significantly over time.

The purpose of the invention is to increase the productivity of wells and reduce the flow rate of gas supplied from the surface.

The goal is achieved by those. that they measure the pressure drop across the section of the pipeline that drains the gas from the separator, and keep it constant.

The drawing shows a scheme that implements the proposed method of operating a well.

To the annular space formed between the explosive 1 and placed in

15 a fountain half 2 is connected to the pipeline for supplying a working agent with a control valve 3, and a separator 4 is installed on the discharge pipe from the fountain column, from the upper part of which comes out

Claims (2)

20 gas, and from the bottom - liquid. To control the flow of gas in the path of the gas flow, a device for measuring pressure drop 5 with differential pressure gauge 6 is installed, the lower pipe 7 of the separator is bent upwards and connected to the discharge line by an additional tube 10. To control the movement of the pelvis, the differential pressure gauge is connected the regulator 8 and the control unit 9, which through the communication line are supplied to the regulating valve 3. Gas is supplied from the high pressure source to the well through the valve 3 into the annulus. Through the annular space, g enters the fountain column 2, in which it mixes with gas coming from the reservoir and rises to the wellhead together with the liquid. At the wellhead in the baffle 4, the gas is separated from the liquid and fed to the collecting manifold through the pressure loss measurement device 5, and the liquid through the lower opening in the baffle through the pipeline also enters the collecting collector. By placing the pipeline 7 with a slope upward, the liquid level in the bump stop is kept below the connection point of the pipeline 7 with a collecting manifold by the value: fi. The gas flow mode is controlled by a differential pressure gauge 6, the signal from which Well comes to regulator 8, in which it is compared with a predetermined Hi signal, as a result, the regulator generates an error signal supplied through control unit 3 to regulating valve 3, which controls the flow of operating agent in the well. At the time of the start-up of the well from the reservoir, there is practically no gas flow and the fluid rises only by the working agent. As the fluid is removed from the fountain column 2, the back pressure to the reservoir decreases and gas begins to flow from the reservoir, which mixes with the working agent in order to maintain the desired flow of gas in the well and, consequently. through the device 5, the amount of working agent gas entering the well is reduced by changing the degree of opening of the control valve 3. When the flow of gas from the reservoir decreases, the supply of gas of the working agent increases in the same way. The advantage of the proposed well operation method is that the well is operated with a greater depression on the formation and with a lower working pressure and flow rate of the working agent due to the fact that the pressure loss in the wellbore during the operation is maintained at the optimum level at which the pressure at the bottom of the well maintained at a predetermined level determined by the well survey. The invention The method of operating a well using the regulation of the flow of the working agent. into the fountain column and separation in the separator at the wellhead of its production into liquid and gaseous, characterized in that, in order to increase the productivity of the well and reduce the flow rate of the working agent, the pressure drop across the pipeline section leading off the gas from the separator is measured and maintained constant. Sources of information taken into account in the examination 1. The author's certificate of the USSR No. 700641, cl. E 21 B 43/00, 1975. 2. Muraviev I.M. and others. Technologists and equipment for oil and gas production. M., Nedra, 1971, p. 258-259.