CN2174563Y

CN2174563Y - Drip

Info

Publication number: CN2174563Y
Application number: CN 93221751
Authority: CN
Inventors: 张凤山; 毕文亮; 张彦福
Original assignee: JINZHOU OIL PRODUCTION PLANT LIAOHE PETROLEUM PROSPECTING BUREAU
Current assignee: JINZHOU OIL PRODUCTION PLANT LIAOHE PETROLEUM PROSPECTING BUREAU
Priority date: 1993-08-12
Filing date: 1993-08-12
Publication date: 1994-08-17
Anticipated expiration: 2003-08-12

Abstract

The utility model discloses an impact type oil drip for repairing wells, comprising a short joint and a hollow drip screw. A side hole and a step are arranged on the inner wall of the short joint. At work, the screw can be broken by throwing a heavy rod into the oil drip, and the side hole can be opened, so that residual crude oil in an oil tube can flow into annular space between the oil tube and a casing tube, and the purpose of oil dripping can be obtained. The utility model overcomes the defects of complex processing, higher cost and halfway oil dripping function existing in oil drips in the prior art, and accordingly, the utility model can be widely used for repairing oil wells.

Description

Drip

The utility model relates to a kind of impacting type bleeder that the crude oil of oil pipe can be leaked to pit shaft inside when being used for oil well repairing operation.

Oil well in the oil field is after production after a while, need be to the pump housing and the maintenance of a series of downhole tool of down-hole, therefore, must mention ground to the OIH tubing string, could realize, because the crude oil in promoting the tubing string process in the oil well can constantly flow to ground, pollute, so, oil well is when operate as normal, will link a bleeder above the oil pipe in oil well controls oily stream and flow on the ground, the bleeder that existing technology is used is to be provided with a movable slider in the short tube of through hole is equipped with in one side of main body, and slide block is blocked the fuel injector through hole during ordinary production, makes on the slide block and moves by lifting the oil pipe sucker rod when the oil well operation, the through hole of fuel injector is opened, and the crude oil in the tubing string leaks in the well; Thereby play certain draining effect, but because slide block wherein can not be by giving the position shutoff of thinking or leaving the draining hole in the middle of using, often do not have the effect of draining, the own processed complex of bleeder in addition, often be subjected to certain restriction in the higher use of cost, nowadays a kind of simple bleeder of draining effect and processing and manufacturing that can play fully is not reported.

The purpose of this utility model is in order to overcome the deficiency in the above-mentioned technology, and the bleeder of a kind of impacting type of design, and it is a kind of by the shoulder on the bleeder inwall, makes the sucker rod piston play the draining effect to the way of bleeder screw bump.

Its implementation is

Be that example is illustrated to scheme below

Accompanying drawing is an impacting type bleeder structural representation.

Illustrated below in conjunction with accompanying drawing

It is the pipe nipple 1 and a hollow oil drainage screw 2 and spring washer 3 compositions that have other hole.Car has screw thread 4 above the other hole inwall on pipe nipple, and a shoulder 5 is arranged at the top of pipe nipple inwall, during assembling, can finish assembling above screw 2 and spring washer 3 be screwed into other hole 6 above the pipe nipple.

This device in use, as long as the upper end of bleeder and the standing valve in the oil well pump are connect, tie mutually with the oil pumping pump barrel lower end, just can carry out ordinary production, its operating principle is: when needs oil pipe draining, as long as in oil pipe, drop into a trip rod to bleeder inside, the shoulder 5 of its inwall just can make trip rod sever hollow oil drainage screw 2 above the bleeder by-pass prot, this moment, other hole 6 was exposed, at this moment, the residual oil stream in the oil pipe is excreted to oil pipe and the middle effect of having played draining of sleeve pipe.

Advantage of the present utility model is: this device is owing to adopt the impacting type method, when the needs draining, just can come out as long as drop into a weight bar twist off type screw draining hole, the residual oil in the oil pipe just can flow out, reach the draining purpose, so this device has simple in structure and low in cost.The function that draining is reliable, this bleeder cost only are the 1/5-1/4 of common bleeder.

The utility model during fabrication, the material of its hollow core oil drainage screw 2 is manufactured with copper or cast iron and is formed, the length dimension of screw should be greater than the radius of bleeder itself.

Claims

1, a kind of impacting type bleeder that is used for workover treatment is made up of pipe nipple 1 and hollow oil drainage screw 2, it is characterized in that having above the described pipe nipple inwall an other hole 6 and a shoulder 5.

2, impacting type bleeder according to claim 1 is characterized in that the screw 2 in the bleeder is the hollow body shape.

3, bleeder according to claim 1 is characterized in that the length dimension of oil drainage screw 2 should be greater than the radius of bleeder itself.