CN2918723Y

CN2918723Y - Water-resistant well washing switch

Info

Publication number: CN2918723Y
Application number: CN 200620086151
Authority: CN
Inventors: 尚兴军; 尚兴忠; 尚文顺; 陈爱民
Original assignee: SHANDONG BAOSHIDA PETROLEUM EQUIPMENT MANUFACTURING Co Ltd
Current assignee: SHANDONG BAOSHIDA PETROLEUM EQUIPMENT MANUFACTURING Co Ltd
Priority date: 2006-06-30
Filing date: 2006-06-30
Publication date: 2007-07-04
Anticipated expiration: 2016-06-30

Abstract

The utility model relates to a well flushing tool used in oil field, in particular to a water blocking well-flushing switch. The technical proposal is that a slip packer is combined with a well-flushing switch to form an integer, which comprises an upper connector, an adjusting ring, a valve cover, a rubber cylinder, a steel ball, a spacing ring, a valve plug, a spacing sleeve, a cone, a centralizer and a track sieve tube from top to bottom, wherein the upper connector, the adjusting ring and the track sieve tube move downwards together; the compressed rubber cylinder can enlarge the utility model diameter to form an upper and a lower layer in the circular space of the sleeve tube. The utility model has the advantages that the utility model changes the disadvantages of the original tool thoroughly; the slip packer is combined with the well-flushing switch to form an integer so as to save sufficient funds; the rubber cylinder can not be scraped off by the sleeve tube when moving into the well and can not be scraped off by the sleeve coupling because the diameter of the rubber cylinder is smaller than the inner diameter of the sleeve tube.

Description

The well-flushing switch blocks water

One, technical field:

The utility model relates to a kind of oil field flushing instrument, particularly a kind of well-flushing switch that blocks water.

Two, background technology:

Oil field development constantly continues; the energy of other layers also just constantly reduces; but clean water has kill-job to oil reservoir effect; very easily make oil reservoir produce water-sensitive again; causing oil reservoir not go out wet goods pollutes; so well-flushing protection instrument occurred; well-flushing instrument existing problems in the past are as follows: flushing fluid can enter the shaft bottom; polluted reservoir; rubber is because its diameter just becomes the fringe shape to wipe off greater than the straight internal diameter of sleeve pipe, and valve is that thickened-oil pump loses effect when drawing, in order to make not meeting of oil pipe elongation activity up and down; also to be lowered to tubing anchor; and the slip insert of tubing anchor is under the effect of high pressure, just can grab to be attached on the internal surface of sleeve pipe, so will make its generation effect; must realize with a cover pump tank car team again, increase expense.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provide a kind of slip-type packer and well-flushing switch in one, can save the well-flushing switch that blocks water of substantial contribution.

Its technical scheme is: be integral by slip-type packer and well-flushing switches set, comprise top connection, adjustable ring, valve cover, rubber tube, steel ball, spacer ring, Versailles, stop collar, cone, centralizer, track screen casing from top to bottom successively, described top connection, adjustable ring and track screen casing are descending together, the compression rubber tube is that its diameter becomes greatly, is two-layer about the sleeve pipe annular space forms.

Described centralizer is made up of slips, slip spider, centralizer body, slip ring pin and slip ring sleeve successively.

The beneficial effects of the utility model are: the shortcoming and defect that can thoroughly change former instrument, slip-type packer and well-flushing switches set are integral, and can save substantial contribution, and rubber tube is wiped off by sleeve pipe at the Shi Buhui that goes into the well, because its diameter less than casing inner diameter, can not wiped off by quilt cover tube coupling hoop yet.

Four, description of drawings:

Accompanying drawing 1 is the structural representation of first of the present utility model;

Accompanying drawing 2 is structural representations of second portion of the present utility model;

Accompanying drawing 3 is structural representations of third part of the present utility model.

Five, the specific embodiment:

In conjunction with the accompanying drawings 1,2,3, the utility model will be further described:

Its technical scheme is: be integral by slip-type packer and well-flushing switches set, Fig. 1,2,3 is connect successively, comprise top connection 1, adjustable ring 2, valve cover 3, rubber tube 4, steel ball 5, spacer ring 6, Versailles 7, stop collar 8, cone 9, slips 10, slip spider 11, centralizer body, slip ring pin 14 and slip ring sleeve 15 composition centralizers, track screen casing 16 from top to bottom successively, described top connection 1, adjustable ring 2 and track screen casing 16 are descending together, compression rubber tube 4 is that its diameter becomes greatly, is two-layer about the sleeve pipe annular space forms.

Operating principle is:

One, seat envelope principle is: when the utility model is gone into the well, packer slip ring pin 14 is in short track top dead-centre, when instrument during down to design attitude, upper lifting pipe post certain altitude is slowly transferred tubing string again, the centralizer of forming because of assembly 10-15 relies on frictional force that the tension force of spring causes wiper block 12 and casing wall to move along the rail groove of track screen casing 16, cause the top dead-centre of the long track of slip ring pin 14 when the top dead-centre of short groove moves to the seat envelope, slips presses 10 just to become from contraction state and strut shape (being leaned on the strength on slope to push open by cone 9), and the firm inwall that is stuck in sleeve pipe, simultaneously, seat envelope shear pin is cut off under the effect of upper tool part oil pipe weight, top connection 1, adjustable ring 2, inner orbit screen casing 16 is descending together, compression rubber tube 4 makes its diameter become big, is that the sleeve pipe annular space forms two layers up and down.

Two, well-flushing principle: flushing fluid enters the upper strata of sleeve pipe annular space, and this moment, the steel ball of standing valve was lived valve seat, made well-flushing liquid can not enter lower floor.

Three, deblocking principle: when oil well because safeguard etc. when having needed flowline, the upper body oil pipe: top connection 1, adjustable ring 2 and track screen casing 16 are up together, the centralizer that assembly 10-15 is formed is descending, slip ring pin 14 moves to bottom dead centre, cone 9 withdraws from slip insert 10, regain unfreezing, rubber tube is regained deblocking under self endogenetic process simultaneously.

Claims

1, a kind of well-flushing switch that blocks water, it is characterized in that: be integral by slip-type packer and well-flushing switches set, comprise top connection, adjustable ring, valve cover, rubber tube, steel ball, spacer ring, Versailles, stop collar, cone, centralizer, track screen casing from top to bottom successively, described top connection, adjustable ring and track screen casing are descending together, the compression rubber tube is that its diameter becomes greatly, is two-layer about the sleeve pipe annular space forms.

2, the well-flushing switch that blocks water according to claim 1, it is characterized in that: described centralizer is made up of slips, slip spider, centralizer body, slip ring pin and slip ring sleeve successively.