CN2276986Y

CN2276986Y - Well repairing bullet

Info

Publication number: CN2276986Y
Application number: CN 96245431
Authority: CN
Inventors: 高瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-30
Filing date: 1996-10-30
Publication date: 1998-03-25
Anticipated expiration: 2006-10-30

Abstract

The utility model relates to a well repairing bullet which can be used for repairing diameter reducing and deformed oil well sleeve pipes. The well repairing bullet utilizes a metal casing, the inner part of which is lined with a plastic sleeve with patterns, and the casing is filed with heat resistant mixed explosive; the upper end of the casing is connected with a connection screw; the upper end of the connection screw is connected with an impact detonator, and the well repairing bullet can be formed; the impact detonator can be connected by an oil delivery pipe, and the well repairing bullet can be sent to the deformed position of an underground sleeve pipe. The inner loading explosive of the well repairing bullet can be detonated by casting rod impact by people; the expansion pressure of high-temperature high-pressure gas can be combined with shock waves, the oil well of diameter reducing and bend sleeve pipe expansion shape and repair can recover the capacity of oil production.

Description

Well repair bomb

The utility model relates to a kind of well repairing device, is that the oil well setting of casing that is used to be out of shape carries out bulging, reparation.

Utilize blast bulging technology to repair deformed casing under the oil well, in this technical field, China has delivered Well repair bomb patent (patent No. ZL95209626.9) in utility model patent communique the 12nd volume of issue in 1996, the 24th (P92).This Well repair bomb is the modified of above-mentioned patent, and its significant improvement has three aspects, and the first adopts housing plastic lining cover to replace the outer cutting of housing, has simplified processing technology, and can guarantee that even fragmentation does not damage sleeve pipe to housing in the down-hole; It two is to replace blind nut with the welding shutoff, has simplified production and assembly technology; It three is to adopt heat-resisting composite explosives, and the reparation applicable to darker oil well deformed casing has enlarged the scope of application.

The purpose of this utility model provides improved repairing and bullet in, and it can not only repair the oil well setting of casing of necking deformation, and has simplified processing and assembly technology, and conformability is better, and is easy and simple to handle, safe and reliable.

The utility model is achieved in that the metal shell liner has the plastic bushing of decorative pattern, the heat-resisting composite explosives of its inner filling, a heat-resisting detonating fuse is placed at the powder charge center, lays a heat-resisting auxiliary booster grain in the powder charge upper end, and detonating fuse tightens up with the powder squib of percussion primer and is connected.Improved Well repair bomb adopts and be lined with figuratum plastic sheath in housing, has both guaranteed that the Well repair bomb housing had enough intensity and excellent sealing performance, and makes the even fragmentation of housing and do not damage sleeve pipe after ignite the down-hole when it.Select the general percussion primer of petroleum industry for use, its objective is in order to ensure igniting Well repair bomb safely and reliably.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is a structure chart of the present utility model

Fig. 2 is with Well repair bomb embodiment sectional view

In Fig. 1,1 shutoff, 2 pads, 3 housings, 4 heat-resisting detonating fuses, 5 heat-resistant explosive powder charges, 6 plastic bushings, 7 connect spiral shell, 8 sealing rings, 9 heat-resisting auxiliary booster grains, 10 pads

Fig. 1 middle shell 3 upper ends with connect spiral shell 7 and be connected, connect the spiral shell upper end and going into the well before, connect percussion primer, tighten up in the powder squib with powder charge center detonating fuse upper end insertion percussion primer simultaneously.

In embodiment illustrated in fig. 2,11 is the oil formation downhole, and 12 is the cementing concrete layer, and 14 is well liquid, connects percussion primer 16 by petroleum pipeline 17, and coupled Well repair bomb 15 usefulness petroleum pipelines are put into undergauge sleeve pipe position, down-hole.At well head input bump rod, percussion primer is ignited the Well repair bomb powder charge, produces the bulbs of pressure and the shock wave synergy of HTHP detonation gas, makes undergauge sleeve pipe bulging by manually, and oil pipe can normally pass through sleeve pipe 13, recovers the employing ability.

Claims

1. improved Well repair bomb, it is characterized in that in tubular metal housing, being lined with figuratum plastic bushing, the heat-resisting composite explosives of its inner filling, a heat-resisting detonating fuse is placed at the powder charge center, at heat-resisting auxiliary booster grain of powder charge upper ends, tighten up in the powder squib of detonating fuse by this powder column centre bore insertion percussion primer.