SU1221388A1 - Method of hydraulic treatment of producing seam - Google Patents

Description

1221388

2. The method according to claim 1, distinguishing between the hydraulic interfacing between adjacent injectors and the fact that, prior to the start of the bullet wells, the working agent is

The invention relates to the mining industry and can be used for pumping water into a productive formation, particularly coal, to create safe working conditions for miners in the coal and other industrial sectors.

The purpose of the invention is to reduce the energy costs of injecting water from an aquifer into the reservoir due to the creation of a water-resistant horizon in an aquifer.

FIG. 1 shows a hydroprocessing scheme for a productive formation using an aquifer, a vertical section; in fig. 2 shows section A-A in FIG. 1 (in the plane of the water level).

The method is carried out as follows.

A production well 1 is drilled with the intersection of the reservoir 2 and the aquifer 3. In the production well 1 a casing 4 is constructed and the perforations 5 are made (in the casing 4, the plane of the reservoir 2 and the aquifer 3). Then, at some distance from the production well 1, calculated using the formulas of underground hydraulics, the grid of injection wells 6 is drilled, and the barrier wells 7 are drilled along the contour of their influence when they are injected, forming a hydraulically conductive collector 8 , and high-viscosity fluid is injected into them. In the aquifer, water resistance is formed up to 9, which resists the water distribution of aquifer 3 from the production well 1 deep into the massif during the period of the displacement of aquifer water.

horizon during injection of the working agent in injection wells 6.

To ensure uniform water displacement .; from the aquifer to the production well and

making it possible to regulate the hydrostatic process, hydroseat to form a hydroconductive reservoir 10. Hydroprocessing of the productive formation 2 is carried out

water, pushed aside from the aquifer 3, by means of - injecting a working agent into it into injection wells 6. At the mouth of the production well, a hermetic tube is installed. tizator 11.

The injection agent (for example, compressed air) pushes the water from the aquifer to the production well, and through the well enters the reservoir, treating it. Highly viscous fluid forms in the water horizon which is pre-pumped into it. It is impermeable to water, which is a barrier that prevents water from being pushed into the bulk of the array.

Editor A. Revin

Compiled by A, Gubaylovsky

Tehred N. Bonkalo Proofreader L. Pilipenko

Order 1625/41 Circulation 436Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

(rig, 2

Claims (2)

1. METHOD OF HYDRO-TREATMENT 'PRODUCTIVE STRING, including highly viscous fluid. drilling a production well into a producing formation with an intersection of the aquifer, casing it, perforating the casing in the planes of the producing formation and the aquifer, sealing the wellhead, drilling a grid of injection wells on the aquifer and injecting a working agent into them, characterized in that, In order to reduce the energy costs of hydroprocessing by creating an waterproof belt by the capacity of the aquifer, an additional bu Barrier wells are drilled onto the aquifer ®, hydraulic breakdown is carried out between adjacent barrier wells and injected SU „„ 1221388 2. The method according to p. 1, excellent> s-hydraulic breakdown between adjacent injection pumps and the fact that prior to injection wells, melting of the working agent is carried out