SU855194A1 - Method of developing well - Google Patents

Description

(54) METHOD OF DRILLING WELLS

The invention of fires to work on mastered borehole. The known method has been mastered for the use of wells tiy- those kx raeglvnveaaiv vibroimpact on the pump-compressor pipes, equipped with special discs. The implementation of this method in 1Ikayut alternating hydraulic impulses l. However, the method is sloppy in implementation and not sufficiently effective. A well-known method of the well and the well involves pumping fluid from the reservoir using an airlift and creating hydropercussion pulses in the well 1 2j. However, the method is not effective enough due to the slight hydrodynamic effect on the formation. The goal of izofeteny is to increase the hydrodynamic effect on olasg. This goal is achieved by pumping out the fluid alternately from two layers that are isolated from each other, and, when switching to the second interval, simultaneously block the first one. The method is carried out as follows. By means of a packer or other device lowered into the well on pump-compressor pipes, two reservoir intervals are isolated. Turn on the compressor and begin to conduct pumping through the lower interval. Once the flow rate has stabilized, moving the tubing closes the lower interval and translates the airlift to the upper interval. At the moment of overlap, a hydraulic impact occurs in the lower interval of the reservoir, which spreads through the filtering zone (however. Immediately after this, the pumped-out fluid begins to flow into the water: demolition pipes through the interval. .

The gidrou / wp spreads in the upper interval

So of course, it is possible to switch the airlift from one flight to / Fugoy, to & pumping is carried out with the impact of pulsed impulses on the n;) odonic layer.

With the relative Simplicity of technical means, the proposed method improves the effect of pumping into reducing qp OKA well completion. In addition, the use of the pulsating pumping mode allows you to increase flow rates (relative to pumping by the usual airlift). First trials show a margin (almost 1 times debit value.

The drawing shows the device dd implementation of the proposed method.

This device contains a two-interval packer device, its spacing 1 has a fastening thread with lower KSSH10M water-lifting pipes (not shown), pump-compres- sor pipes 2, which end with cork 3 and 4x valve 4, the cork serves for opening one of pumped intervals 5,6, tip for closing the window 7, rubber elements 8-1О serve to isolate pumped $ x intervals.

In the position shown in the drawing, the device is lowered at the end of the airlift into the well, preliminarily compressing the rubber elements 8-1О, so that after they are installed at the required filter interval, they are insulated. Having turned on the compressor, they start pumping out through the lower interval, i.e. through the holes 6. As soon as the flow rate of the pumped-out liquid is stabilized, the pump-compressor pipe 2 is lowered and the plug 3 closes the holes 6 - a hydraulic shock occurs in the interval between elements 9 and 10, which spreads through the filtering zone. Immediately after this, the pumped-out liquid begins to flow into the water pipes through the upper interval and the openings 5. After some time, the pipes 2 are lifted, after the openings 5, between the elements 8 and 9 there is a shock, etc.

Claims (2)

1. USSR author's certificate No. 262042, cl. E 21 B 43/00, 1967. 2.Avtsky certificate CCCF according to application No. 2428979/22-ОЗ, cl. Е 21 В 43 / ОО, 1976.