CN201209435Y

CN201209435Y - Intermediate joint of perforation gun

Info

Publication number: CN201209435Y
Application number: CNU2008200902547U
Authority: CN
Inventors: 于米胜; 王树申; 付宝军; 吴振东
Original assignee: DAQING WANSHIDA PETROLEUM TECHNOLOGY Co Ltd
Current assignee: DAQING WANSHIDA PETROLEUM TECHNOLOGY Co Ltd
Priority date: 2008-06-20
Filing date: 2008-06-20
Publication date: 2009-03-18
Anticipated expiration: 2018-06-20

Abstract

is the utility model discloses a middle joint for a perforating gun, which mainly solves the problems of the prior middle joint of big perforating blind area, high manufacture cost, low detonation transmission rate and complex structure. The middle joint is characterized in that a joint main body (3) is connected between an upper gun body and a lower perforating gun body (1, 2), the upper end and the lower end of the joint main body (3) are respectively connected with a lower gun carrier disk (4) and an upper gun carrier disk (5), a stage hole of the upper perforating gun body (1) arranged at the lower end of the lower gun carrier disk (4) is provided with a drawing disk (6), a lower righting body (7) is connected under the lower gun carrier disk (4) in a hole of the joint main body (3), an upper righting body (8) is connected to the upper gun carrier disk (5) in the hole of the joint main body (3), a booster (9) is respectively fixed in corresponding end holes of the lower righting body (7) and the upper righting body (8) by tip wires, as well as the booster (9) is embedded with a detonating cord (10). The middle joint for the perforating gun has the advantages of small perforating blind area, low manufacture cost, high detonation transmission rate and simple structure.

Description

The perforating gun transition joint

Technical field:

The utility model relates to the used joint of perforating gun in the oil recovery field, oil field, especially perforating gun transition joint.

Background technology:

The structure of the transition joint on the perforating gun and even shape adopt traditional double-body bike mode always for a long time, promptly divide and go up transition joint and following transition joint.Last transition joint connects on next perforating gun body, and detonating fuse is fixedly clamped with retaining sheet, carefully measures before connection, and short cut-out of fixed length puts detonating primer clamping connection again, sets upright with supporting positive cover; Following transition joint reconnects on the perforating gun body, detonating fuse, detonating primer etc. are pressed preceding method, deciding detonating fuse extension elongation and detonating primer fixes, utilize upward transition joint and following transition joint to connecting after setting upright, because of structural limitations causes the perforation blind area bigger, continuity to perforation causes certain influence, directly influences the liquid measure of adopting behind the perforation.In addition, because the transition joint that former upper and lower transition joint is formed is structurally too complicated, for guaranteeing the propagation of explosion rate between the perforating gun, the perforation personnel want each detonating fuse head will carefully measure its length of stretching out, as stay and longly or too short will influence the propagation of explosion rate, even cause the accident, also have the cost of production height.Press petroleum recovering present stage use amount, increased the input of the cost of production of manufacturer and user's procurement payment greatly.

The utility model content:

Existing transition joint perforation blind area is big, manufacturing cost is high, the propagation of explosion rate low and baroque problem in order to solve, the utility model provides a kind of perforating gun transition joint, and this perforating gun transition joint has that the perforation blind area is little, low cost of manufacture, propagation of explosion rate height and characteristic of simple structure.

The technical solution of the utility model is: this perforating gun transition joint comprises perforating gun body up and down, be connected with adapter body between the perforating gun body up and down, the adapter body upper and lower side is connected with down the firing mount dish respectively and goes up the firing mount dish, perforating gun body step hole is built-in with the tension dish on the following firing mount dish lower end, the firing mount dish is connected with down centralizer body and last centralizer body respectively on the firing mount dish down and upward under in the adapter body hole, following centralizer body is fixed with detonating primer with the corresponding stomidium of last centralizer body is interior respectively by jackscrew, detonating primer is built-in with detonating fuse, is connected with the perforation firing mount respectively by screw under the firing mount dish on the following firing mount dish and upward.

Be provided with sealing ring between body of perforating gun up and down in the such scheme and adapter body; Pull the hole on the tension dish.

The utlity model has following beneficial effect: this perforating gun transition joint is owing to take such scheme, and at first because of adapter body changes one into, contraction in length causes its perforation blind area only to be about 40 millimeters, so reduced the perforation blind area, has reduced cost.Secondly fix because of detonating primer adopts jackscrew, guaranteed the detonating primer distance, thereby guarantee the propagation of explosion rate.At last because of adopting the adapter body integrative-structure, thus simple in structure, in light weight.Thus this perforating gun transition joint have that the perforation blind area is little, low cost of manufacture, propagation of explosion rate height and characteristic of simple structure.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model.

1-goes up perforating gun body, perforating gun body under the 2-, 3-adapter body, firing mount dish under the 4-, the last firing mount dish of 5-, 6-tension dish, centralizer body under the 7-, the last centralizer body of 8-, 9-detonating primer, 10-detonating fuse among the figure.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

By shown in Figure 1, this perforating gun transition joint comprises that perforating gun body 1 reaches perforating gun body 2 down, last perforating gun body 1 reaches down and is connected with adapter body 3 between the perforating gun body 2, perforating gun body 2 and 3 of adapter body were provided with sealing ring under last perforating gun body 1 reached, adapter body 3 upper and lower sides are connected with down firing mount dish 4 respectively and go up firing mount dish 5, perforating gun body 1 step hole is built-in with tension dish 6 on following firing mount dish 4 lower ends, pull the hole on the tension dish 6, the firing mount dish reaches for 4 times to go up on the firing mount dish 5 and is connected with down centralizer body 7 and last centralizer body 8 respectively under in adapter body 3 holes, following centralizer body 7 is fixed with detonating primer 9 with last centralizer body 8 corresponding stomidiums are interior respectively by jackscrew, detonating primer 9 is built-in with detonating fuse 10, on the following firing mount dish 4 and go up firing mount dish 5 times and be connected with the perforation firing mount respectively by screw.

Actual use is identical with existing perforating gun transition joint.Connect upward perforating gun body 1 and perforating gun body 2 down by adapter body 3, thereby shorten the perforation blind area, the perforation blind area only is 40 millimeters, simplifies the structure, and reduces manufacturing cost.Reach upward firing mount dish 5 connections centralizer body 7 and last centralizer body 8 down by following firing mount dish 4, strain the perforation firing mounts by tension dish 6, detonating primer 9 is fixed by jackscrew, guarantees the distance of 9 of two detonating primers, thereby has improved the propagation of explosion rate.

In sum, it mainly is to change disome into one that this perforating gun transition joint improves, and detonating primer 9 is fixed by jackscrew.Reduce the perforation blind area thus, guaranteed the propagation of explosion rate, reduced cost, simplified the structure, reduced weight.Thus this perforating gun transition joint have that the perforation blind area is little, low cost of manufacture, propagation of explosion rate height and characteristic of simple structure.

Claims

1, a kind of perforating gun transition joint, comprise perforating gun body (1 up and down, 2), it is characterized in that: the perforating gun body (1 up and down, 2) be connected with adapter body (3) between, adapter body (3) upper and lower side is connected with down firing mount dish (4) respectively and goes up firing mount dish (5), perforating gun body (1) step hole is built-in with tension dish (6) on following firing mount dish (4) lower end, firing mount dish (4) is connected with down centralizer body (7) and last centralizer body (8) respectively on the firing mount dish (5) down and upward under in adapter body (3) hole, following centralizer body (7) is fixed with detonating primer (9) with the corresponding stomidium of last centralizer body (8) is interior respectively by jackscrew, detonating primer (9) is built-in with detonating fuse (10), and following firing mount dish (4) is gone up and gone up under the firing mount dish (5) and is connected with the perforation firing mount respectively by screw.

2, perforating gun transition joint according to claim 1 is characterized in that: be provided with sealing ring between perforating gun body (1,2) and adapter body (3) up and down.

3, perforating gun transition joint according to claim 1 is characterized in that: the tension dish is pulled the hole on (6).