CN2455933Y

CN2455933Y - Choke

Info

Publication number: CN2455933Y
Application number: CN00253163U
Authority: CN
Inventors: 许苏明
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-22
Filing date: 2000-11-22
Publication date: 2001-10-24
Anticipated expiration: 2010-11-22

Abstract

The utility model discloses a choked flow device, which is composed of an upper joint, a lower joint, an inner choked flow tube, and an outer choked flow tube, wherein, the inner and the outer choked flow tubes are arranged in the upper and the lower joints. The utility model is additionally connected between an oil well perforating gun and a testing device, the shock and the vibration which are passed to the testing device because of connected operation when the perforating gun is operated can be effectively reduced, and the beneficial effect of protecting the testing device from destruction can be performed.

Description

Flow plug

The utility model discloses a kind of flow plug, and particularly suitable uses in oilfield perforating test connection is done, and belongs to the improvement of fluid-transporting tubing technology.

The enormous impact ripple that produces during oil field downhole perforation operation can produce impact endurance test shock to tester, the lighter can reduce the application life and the measuring accuracy of instrument greatly, the damage of serious caused instrument, this situation has been a problem that urgency is to be solved in the oil field perforation testing combination operation process.

The purpose of this utility model is exactly at the problem of above-mentioned existence and provide can significantly reduce the suffered perforating job impact endurance test shock of tester in the oil well test process, thus a kind of flow plug that can effectively protect tester to avoid damaging.

The utility model flow plug is added in actual use to be connected between oil well perforation rifle and the tester; by between from the perforating gun to the tester by the iris action that is had in formed this section liquid-transport pipe-line of the utility model flow plug; can weaken the perforating job impact endurance test shock greatly; infringement to tester; advance you and make tester obtain intact protection, the specific embodiments of the utility model flow plug will specifically provide in the following embodiments.

Description of drawings:

Fig. 1 is the utility model flow plug structural representation.

A kind of flow plug of embodiment

Present embodiment is a kind of embodiment that the utility model flow plug is done to use in the work at the oil well test connection.Its left end of present embodiment flow plug has the hollow tube top connection (1) of a tool three stairstepping external cylindrical surfaces, be processed with the dovetail shaped taper thread in this top connection (1) left end stop portion endoporus, low order end single order face of cylinder stop portion inner surface has choke tube in (4) through thread connection on it, should be welded with end socket (6) shutoff sealing in interior choke tube right-end openings place, and also have through hole in this on choked flow tube wall and form runner; At aforementioned low order end single order face of cylinder stop portion external surface choke tube (5) outside thread connection has, should be set on outside the interior choke tube (4) by outer choke tube, its right-end openings place also is welded with an end socket (7) shutoff sealing, should also have through hole formation runner on the outer choked flow tube wall, in the middle of top connection (1), seal through suit sealing (2) on the single order cylindrical outer surface, thread connection has lower contact (3), this lower contact (3) is set on outside the outer choke tube (5), its interbody spacer has runner, and this lower contact (3) right-hand member stop portion is processed with the dovetail shaped outer cone thread.

The present embodiment flow plug is connected its lower contact right-hand member taper thread in use with perforating gun; its left end top connection is connected with tester through inside tapered thread; can carry out test job after connecting; when perforating gun work connection is done; in the oil well vibrations of medium huge impact in flow plug internal transmission process through the damping action of inside and outside choke tube; the impact and the vibrations that arrive tester are significantly reduced, thereby make tester obtain reliable intact protection and do not damage.In the use of reality, for strengthening the damping shock absorption effect of flow plug inside, usually make the lead to the hole site on the inner inside and outside choke tube tube wall of flow plug interwoven in the making, sometimes also can be capablely become an angle of cut setting, then can better receive the damping damping the through-bore axis irrelevancy on the inside and outside choke tube tube wall.

The successful use certificate of present embodiment understands that the utility model flow plug has following advantage: this practicality Novel flow plug can effectively protect tester and not be destroyed, and has namely guaranteed the use of tester Life-span and measuring accuracy have also improved the success rate that the perforating test connection is done greatly, have obtained and can save Spending has improved again the beneficial effect of operating efficiency.

Claims

1. flow plug, it is characterized in that its left end has the hollow tube top connection (1) of a tool three stairstepping external cylindrical surfaces, be processed with the dovetail shaped taper thread in this top connection (1) left end stop portion endoporus, low order end single order face of cylinder stop portion inner surface has choke tube in (4) through thread connection on it, should be welded with end socket (6) shutoff sealing in interior choke tube right-end openings place, and also have through hole in this on choked flow tube wall and form runner; At aforementioned low order end single order face of cylinder stop portion external surface choke tube (5) outside thread connection has, should be set on outside the interior choke tube (4) by outer choke tube, its right-end openings place also is welded with an end socket (7) shutoff sealing, should also have through hole formation runner on the outer choked flow tube wall, in the middle of top connection (1), seal through suit sealing (2) on the single order cylindrical outer surface, thread connection has lower contact (3), this lower contact (3) is set on outside the outer choke tube (5), its interbody spacer has runner, and this lower contact (3) right-hand member stop portion is processed with the dovetail shaped outer cone thread.