CN2343339Y

CN2343339Y - Pressure exploder with shear pin handy to mounting or detaching

Info

Publication number: CN2343339Y
Application number: CN 98228386
Authority: CN
Inventors: 陈锋; 郭廷亮; 袁吉诚
Original assignee: LOGGING Co OF SICHUAN PETROLEUM ADMINISTRATION
Current assignee: LOGGING Co OF SICHUAN PETROLEUM ADMINISTRATION
Priority date: 1998-03-03
Filing date: 1998-03-03
Publication date: 1999-10-13
Anticipated expiration: 2008-03-03

Abstract

The utility model relates to a pressure exploder convenient of loading and unloading a shear pin, which comprises an upper contact, a lower contact, a piston, a striker, a sealing ring, a shear pin bush, and the shear pin, wherein, a half section of the shear pin bush is arranged in the upper contact, and the other half section is exposed outside the upper contact; a section of the shear pin bush, which is exposed outside the upper contact, is provided with two to four rings of pin holes, and the piston is installed in the shear pin bush; the surface of the piston is also provided with two to four rings of shear pin holes which correspond to the shear pin holes on the shear pin bush; the shear pin is installed in the shear pin bush and the shear pin holes of the piston, and the lower contact is combined with the upper contact by screw threads to firmly fix the shear pin bush in the upper contact (1). The utility model has the advantages of convenience of loading and unloading the shear pin, low operating cost, and simple structure, and field-work time can be shortened.

Description

But a kind of pressure detonator that cuts off conveniently assemble and disassemble

The utility model belongs to oil exploitation device technique field.

In the oil exploitation operation, need with perforating bullet borehole wall perforation to get through gas channel.Detonating of perforating bullet, caber commonly used are detonated and the pressure method of ignition.Detonating of gradient well, horizontal well and testing combination operation well, inapplicable caber detonates, and adopts the pressure method of ignition.Existing pressure priming device is that the method with aboveground pressurization is detonated it, and when moulding pressure reached predetermined value, pressure promoted piston and cuts off to cut off and drive the striker medicine cake that clashes, and ignites perforating bullet.But because downhole conditions is different, it is also different to ignite pressure, should increase at the scene as required or subtract to cut off quantity.Cutting off of prior art pressure priming device is not quick detachable, wastes time and energy when operating at the scene, often delays operation, increases running cost.

The purpose of this utility model is to provide a kind of and can conveniently packs into and unload the pressure detonator that cuts off.

But the purpose of this utility model is achieved in that a kind of pressure detonator that cuts off conveniently assemble and disassemble, comprises top connection, lower contact, piston, striker, sealing ring, cuts off and cut off cover.Top connection is the columnar structured of hollow, and its epimere inner surface has internal thread to be connected with well casing, and its hypomere external surface has external screw thread, combines with lower contact.Cut off cover for cylindrical shape, be contained on the hypomere of top connection endoporus, half is contained in the top connection, outside half is exposed to, being exposed to has the 2-4 circle to cut off the hole on the outer external surface that cuts off cover, all there is diameter each outer end that cuts off the hole greater than the cannelure that cuts off the hole, cuts off with conveniently assemble and disassemble.Piston is cylindrical, is contained in to cut off in the cover, and striker is equipped with in its lower end, under the piston section surface with cut off cutting off of putting and also have the 2-4 circle to cut off the hole on the corresponding position, hole.Pack in the hole and cut off the cutting off of hole and piston that cut off that cuts off cover, diameter that cuts off and quantity are decided according to the Initiation Pressure size.Lower contact also is the columnar structured of hollow, and its epimere inner surface has internal thread, combines with the external screw thread of top connection hypomere, pull down lower contact after, promptly expose and cut off cutting off the hole and cutting off of cover hypomere, be convenient to loading and unloading and cut off.In top connection hypomere external surface and lower contact endoporus epimere inner surface contact position, cut off cover epimere external surface and top connection endoporus hypomere contact position, piston epimere external surface and cut off and overlap endoporus epimere contact position sealing ring all is housed.

The utility model has the advantages that loading and unloading cut off easily, can shorten the execute-in-place time, save running cost.

Fig. 1 is a structure chart of the present utility model.Fig. 1 is described as follows: 1 is top connection, and 2 are lower contact, and 3 is piston, and 4 is striker, and 5 is sealing ring, and 6 for cutting off, and 7 for cutting off cover, and 8 for cutting off the hole, and 9 is cannelure.

Embodiment of the present utility model 1 is described below mutual alignment between its shape, structure and the each several part and annexation in conjunction with the accompanying drawings: half section that cuts off cover 7 is loaded in the top connection 1, half section is exposed to outside the top connection 1 in addition, cut off the cover 7 be exposed to top connection 1 that the section on, there is the 2-4 circle to cut off hole 8, there is a diameter each upper end that cuts off hole 8 greater than the cannelure 9 that cuts off hole 8, cuts off 6 with conveniently assemble and disassemble; The piston 3 that striker 4 is equipped with on the top is contained in and cuts off in the cover 7, also has the 2-4 circle to cut off hole 8 on it, with cut off cover 7 on to cut off hole 8 corresponding, cutting off 6 diameter and quantity can be selected according to the size of moulding pressure; Lower contact 2 combines with top connection 1 with screw thread, and will cut off cover and 7 be contained in securely in the top connection 1; Cutting off the junction of cover 7 with top connection 1, the contact position of top connection 1 and lower contact 2, and on piston 3 external surfaces, sealing ring 5 is arranged all, seal.

Claims

But 1, a kind of pressure detonator that cuts off conveniently assemble and disassemble comprises top connection (1), lower contact (2), piston (3), striker (4), sealing ring (5) and cuts off (6), it is characterized in that also comprising cutting off cover (7); Top connection (1) is the columnar structured of hollow, and its epimere inner surface has internal thread to be connected with well casing, and its hypomere external surface has external screw thread, combines with lower contact (2); Cut off cover (7) and be cylindrical shape, be contained on the hypomere of top connection (1) endoporus, half is contained in the top connection (1), outside half is exposed to, being exposed to has the 2-4 circle to cut off hole (8) on the outer external surface that cuts off cover (7), all there is diameter each outer end that cuts off hole (8) greater than the cannelure that cuts off the hole (9), cuts off (6) with conveniently assemble and disassemble; Piston (3) is cylindrical, is contained in to cut off in the cover (7), and striker (4) is equipped with in its lower end, and piston (3) descends section surface and cuts off cutting off on the cover (7) also has the 2-4 circle to cut off hole (8) on the corresponding position, hole (8); Cut off cutting off to pack in the hole (8) and cutting off (6) of hole (8) and piston (3) what cut off cover (7), the diameter and the quantity that cut off (6) are decided according to the Initiation Pressure size.Lower contact (2) also is the columnar structured of hollow, and its epimere inner surface has internal thread, combines with the external screw thread of top connection (1) hypomere, pull down lower contact (2) after, promptly expose and cut off cutting off hole (8) and cutting off (6) of cover (7) hypomere, be convenient to loading and unloading and cut off (6); In top connection (1) hypomere external surface and lower contact (2) endoporus epimere inner surface contact position, cut off cover (7) epimere external surface and top connection (1) endoporus hypomere contact position, piston (3) epimere external surface and cut off cover (7) endoporus epimere contact position sealing ring (5) all is housed.