SU883345A1

SU883345A1 - Device for launching well operation

Info

Publication number: SU883345A1
Application number: SU802901955A
Authority: SU
Inventors: Александр Федорович Мосев; Елена Петровна Сидорова; Евгений Александрович Червонцев
Original assignee: Предприятие П/Я М-5703
Priority date: 1980-03-31
Filing date: 1980-03-31
Publication date: 1981-11-23

Description

(54) УСТРОЙСТВО ДЛЯ ОСВОЕНИЯ СКВАЖИН(54) DEVICE FOR DEVELOPING WELLS

1one

Изобретение относитс к горному делу, а именно, к устройствам дл освоени скважин.The invention relates to mining, namely, well completion devices.

Известно,устройство дл освоени скважин, предназначенное дл по.садки фильтра гидроразмывом, включающее фильтровую колонну, оснащенную конической гидронасадкой, в которую, с целью размыва породы водоносного пласта, под давлением подаетс промывочна жидкость 1.It is known that a device for well development, intended for the installation of a filter by hydraulic washing-out, includes a filter column equipped with a conical hydraulic nozzle, into which, in order to wash out the rock of the aquifer, the washing liquid 1 is supplied under pressure.

Недостатком такого устройства вл етс необходимость подачи жидкости под большим давлением, достаточным не только дл разрушени породы продуктивного горизонта, но и создани восход щего потока, со скоростью, обеспёчивакнцей вынос размытой породы на поверхность, что приводит к кольматации фильтровой зоны пласта мелкими частицами размытой породы и тем самым снижает эффективность освоени скважины.The disadvantage of such a device is the need to supply fluid under high pressure, sufficient not only to destroy the rock of the productive horizon, but also to create an upward flow, with a speed that ensures the spread of the diffuse rock to the surface, which leads to clogging of the filter zone of the formation with fine particles of diffuse rock and thereby reducing the efficiency of well completion.

Наиболее близким по технической сзщности к предлагаемому вл етс устройство дл освоени скважины с помощью эрлифта, состо щее из пульпоподъемной колонны, воздуховода, соединенного со смесителем, и наконечником 2.The closest in technical terms to the present invention is a device for the development of a well using an airlift consisting of a pulp-lifting column, an air duct connected to a mixer, and a tip 2.

Недостатком этого устройства вл етс низка эффективность его работы, св занна с тем, что всасывание шла10 ма происходит лишь по площади, а разрушение породы в прифильтровой зоне возможно лишь тогда, когда она представлена несцементированными песками.The disadvantage of this device is the low efficiency of its operation, due to the fact that the absorption of slag occurs only in area, and the destruction of the rock in the filter zone is possible only when it is represented by uncemented sand.

1S1S

Цель изобретени - повышение эффективности размыва и откачки шлама из,прифильтровой зоны.The purpose of the invention is to increase the efficiency of erosion and pumping sludge from the filter zone.

Поставленна цель достигаетс JQ тем, что наконечник снабжен обратным клапаном, в котором установлена гидЬонасадка .The goal is achieved by JQ in that the tip is provided with a check valve in which the hydraulic nozzle is installed.

Claims

FIG. 1 shows a device for well development, which is generally monitored; FIG. 2 is a section A-A in FIG. 1, FIG. 3 is a view of a device operating in a washout mode; in FIG. 4 is a device operating in airlift mode. The well completion device comprises a pulp-lifting column 1 equipped with a mixer 2, provided with a casing 3, and an air duct 4 connected to the mixer 2. In the lower part of the pulp-lifting column 1 a tip 5 is fixed, made in the form outlet, that is, obliquely directed to the axis of the pulp-lifting column 1 section of pipe water. The mouth of the tip 5 is equipped with a check valve 6, in which the gkdronazadka 7 is fixed. One of the walls of the tip 5, preferably top, is made flat, which contributes to the full return of the check valve 6 to it during the operation of the device in the airlift mode and more fully opening the tip mouth 5. Hydraulic nozzle 7 molset be fixed in the valve 6 obliquely, so that the axis of the hydraulic nozzle is located at an acute angle of the plane of the valve 6, in its vertical section, which contributes to the direction of the flushing jet at p The device is operated in the washout mode, by the shortest distance between the nozzle of the hydraulic nozzle 7 and the eroded rock, i.e. The maximum installation depth of the mixer 2 on the pulp-lifting column 1 is determined by the hydrogeological conditions of the well. The development of the well using the proposed device is carried out as follows. After the well has been drilled on, it has been fixed to KpoBjm of the productive horizon by casing pipes, the casing of which is obstructed, the reservoir is opened by a pioneer well — the well is lowered into the well. When the duct 4 is blocked on the surface of the duct 4, a pump is pumped into the pulp-lifting column 1 by the drilling pump, which blurs the walls of the pioneer well through the hydraulic nozzle 7 (FIG. 3). By switching the well completion device to airlift mode, i.e., opening the pulp-lifting column 1 on the surface and injecting air into the duct 4, thereby ensuring suction of the erosion of the pulp through the nozzle 5, the disc valve 6 of which opens to a flat upper tip wall 5. Formula of the Invention A well development device comprising a pulp-lifting column, an air duct connected to a mixer, and a nozzle characterized in that with a efficiency increase a and pumping of sludge prifiltrovoy zone, the tip is provided with a check valve, which is installed gidronasadka. Sources of information taken into account in the examination 1. Balakatov. D.N. Reference up Drilling on water. M., Nedra, 1979, p. 50.

2. Gavrilko V.M. Drill hole filters. M., Nedra, 1976, p. 248 (prototype).