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Title:
DOWNHOLE DEVICE FOR HORIZONTAL WELLS AND THE OPERATING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/059369
Kind Code:
A1
Abstract:
The invention relates to pumping engineering. The inventive downhole device consists of a pipe string (1) comprising a packer (2) which is upwardly mounted therein and provided with a central through channel (3). Said downhole device also comprises a bearing (4) which is provided with transfer windows (5) and an axial stepwise channel (6) embodied therein. Said stepped channel is constructed in such a way that it is possible to place a blocking insert having a central through channel or a jet pump (9) therein. A well logging instrument (20) is mounted on the lower end of a flexible tube (19). The inventive method for operating said downhole device consists in measuring the background quantities of geophysical parameters of a productive formation during the run of the jet pump (9) into the well, setting the body (10) of the jet pump (9) in the stepwise channel (6) of the bearing (4) and in running the well logging instrument (20) in the productive formation area by means of the flexible tube (19). Afterwards, a range of depression is produced in the tail area of the well simultaneously with the well flow rate and a bottom-hole pressure recording, followed by recording the quantities of geophysical parameters of the productive formation. Said invention makes it possible to intensify the well study, test and preparatory works.

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Inventors:
Khomynets, Zinoviy Dmitrievich (Zeleny pr-t, 46-4 Moscow, 6, 11139, RU)
Application Number:
PCT/RU2004/000359
Publication Date:
June 30, 2005
Filing Date:
September 14, 2004
Export Citation:
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Assignee:
Khomynets, Zinoviy Dmitrievich (Zeleny pr-t, 46-4 Moscow, 6, 11139, RU)
International Classes:
E21B43/12; F04F5/54; (IPC1-7): F04F5/54; E21B47/12
Foreign References:
RU2121610C1
SU1146416A1
RU2059891C1
US4744730A
US4293283A
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