CN110424930A - A kind of quick change perforating gun - Google Patents

Abstract

The invention relates to a quick-change perforating gun, which includes an outer gun barrel (1), a bullet holder tube (2) and a disposable connector (3), and the bullet holder tube (2) is arranged on the outer gun barrel (1) ), two quick-change perforating guns are connected through a disposable connector (3). The disposable connector (3) is provided with an electrical connector (5), and the electrical connector (5) includes a first conductive contact pin (501), a second conductive probe (501), a plurality of conductive springs and conductive Sleeve (504), positioning discs (4) are provided at both ends of the bomb holder tube (2), conductive pins (403) are arranged on the positioning disc (4), and the conductive pins at both ends of the bomb holder tube (2) (403) electrical connection, when the perforating gun is connected, the first conductive contact pin (501) and the second conductive probe (501) are inserted into the counterbore of the conductive pin (403). The invention simplifies the connection between guns through the structure of double elastic contact pins, and saves complicated operations such as wiring in the opening of the joint for common perforating guns.

Description

A quick-change perforating gun

technical field

The invention relates to the field of perforating gun manufacture, in particular to a quick-change perforating gun.

Background technique

The perforating gun is a combination of equipment and accessories used for perforating oil and gas wells. Multiple perforating guns are connected in series and then lowered into the oil well to explode the formation. Currently, the energy-shaping perforating gun is widely used. The energy-gathering phenomenon of the fried flower produces the energy-gathering jet, which shoots away the stratum. The perforating gun includes the outer gun barrel, bullet holder tube and connecting joints. When using the perforating gun, the user needs to open the perforating gun, connect the lead wire, add perforating charges, detonating cord, detonator and connect the selection switch. The procedures are cumbersome and complicated, and the installation of perforating guns takes a long time, which slows down the production efficiency of well construction. After the two ends of the connection joint are connected to the outer gun barrel, the connection operation needs to be carried out on the middle joint of the opening. The operation space is small and the wiring time is long, which requires a lot of time and cost.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art, and provide a perforating gun that does not need openings for wiring and saves connection time.

The purpose of the present invention is achieved through the following technical solutions: a quick-change perforating gun, which includes an outer gun barrel, a bullet holder tube and a disposable connector, the bullet holder tube is arranged in the outer gun barrel, two quick-change guns The hole gun is connected through a one-time connector. The one-time connector is provided with a first step hole, and an electrical connector is inserted into the step hole. The two ends of the bullet holder tube are provided with a positioning plate, and the positioning plate is connected to the electrical connection. electrical connection.

The electrical connector includes a first conductive contact pin, a second conductive contact pin, an insulating shaft, a conductive sleeve, a limit sleeve, a limit ring and a plurality of conductive springs, and the two ends of the disposable connector are connected to the outer gun tube connection, the insulating shaft is inserted into the first stepped hole, the insulating shaft is provided with a second stepped hole, the first conductive contact pin passes through the second stepped hole, the conductive sleeve is inserted into the second stepped hole, A conductive spring is provided between the first conductive contact pin and the conductive sleeve, and a hole is provided on the conductive sleeve, and the second conductive contact pin is inserted into the hole, and a conductive spring is also inserted into the hole, and the limit sleeve The sleeve is sleeved on the second conductive contact pin, the limit sleeve is inserted into the second stepped hole and against the conductive sleeve, the limit ring is connected with the inner wall of the first stepped hole and against the insulating shaft, the limit sleeve and The second conductive contact pin passes through the center of the limiting ring.

The positioning plate includes a fixed ring, an insulating sleeve and a conductive pin. The fixed ring is stepped. In the sleeve, one end of the conductive pin is provided with an axial counterbore, the first conductive contact pin and the second wire contact pin are inserted into the axial counterbore, the other end of the conductive pin is provided with a hole, and the conductive pin electrical connection.

Both ends of the disposable connector are provided with threads and a plurality of sealing grooves, a sealing ring is arranged in the sealing groove, a step is arranged in the middle of the disposable connector, and grooves for fastening are arranged on the step . When the disposable connector and the outer gun barrel are threaded tightly, the groove can be tapped to tighten the connection between the disposable connector and the outer gun barrel.

A plurality of sealing grooves are arranged on the outside of the insulating shaft and the conductive sleeve, and sealing rings are arranged on the sealing grooves.

A plurality of counterbores for fastening are arranged on the end face of the limiting ring. The stop ring can be tightened with an angle grinder wrench.

A limit screw is arranged on the fixing ring, a keyway is arranged inside the outer gun barrel, and the limit screw is stuck in the keyway.

The fixing ring is fixedly connected with the insulating sleeve through a pin. Prevents the insulating sleeve from rotating within the retaining ring.

The limiting sleeve is fixed in the conductive sleeve through a snap spring, and the limiting sleeve is an insulator.

The inner walls at both ends of the outer gun barrel are provided with snap springs, and the bullet holder tube is fixed in the outer gun barrel by the snap springs.

The present invention has the following advantages:

1. The one-time connector can be discarded directly after the operation is completed, which greatly saves the cost of operation and maintenance;

2. The disposable gun and the disposable connector do not need to separately assemble the wires in the perforating gun and the wires inside the connector. The double elastic contact pin structure of the joint when going down well also greatly simplifies the connection between the gun and the gun. The user only needs to directly connect the perforating gun with the disposable connector, and no longer needs to wire in the opening of the joint and other cumbersome operations.

Description of drawings

Fig. 1 is a schematic diagram of the connection of two perforating guns;

Fig. 2 is a sectional view of Fig. 1;

Fig. 3 is an enlarged view of place A in Fig. 2;

Figure 4 is a schematic diagram of the structure of a disposable connector;

In the figure: 1-outer barrel, 2-magazine tube, 3-disposable connector, 4-positioning plate, 5-electrical connector, 401-fixing ring, 402-insulating sleeve, 403-conductive pin, 501- First conductive contact pin, 502-second conductive contact pin, 503-insulating shaft, 504-conductive sleeve, 505-limiting sleeve, 506-limiting ring.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

As shown in Figures 1 to 4, a quick-change perforating gun includes an outer gun barrel 1, a bullet holder tube 2 and a disposable connector 3, and the bullet holder tube 2 is arranged in the outer gun barrel 1, two The quick-change perforating gun is connected through a disposable connector 3, the disposable connector 3 is provided with a first stepped hole, an electrical connector 5 is inserted into the stepped hole, and positioning discs 4 are arranged at both ends of the cartridge holder tube 2 , the positioning disc 4 is electrically connected to the electrical connector 5 .

The electrical connector 5 includes a first conductive contact pin 501, a second conductive contact pin 502, an insulating shaft 503, a conductive sleeve 504, a limiting sleeve 505, a limiting ring 506 and a plurality of conductive springs. Both ends of the connector 3 are connected to the outer gun barrel 1, the insulating shaft 503 is inserted into the first stepped hole, the insulating shaft 503 is provided with a second stepped hole, the first conductive contact pin 501 passes through the second stepped hole, The conductive sleeve 504 is inserted into the second stepped hole, a conductive spring is provided between the first conductive contact pin 501 and the conductive sleeve 504, a hole is provided on the conductive sleeve 504, and the second conductive contact pin 502 Inserted into the hole, a conductive spring is also inserted into the hole, the limit sleeve 505 is sleeved on the second conductive contact pin 502, the limit sleeve 505 is inserted into the second stepped hole and resists the conductive sleeve 504, the The limiting ring 506 is connected to the inner wall of the first stepped hole and abuts against the insulating shaft 503 , and the limiting sleeve 505 and the second conductive contact pin 502 pass through the center of the limiting ring 506 .

The positioning plate 4 includes a fixed ring 401, an insulating sleeve 402 and a conductive pin 403. The fixed ring 401 is stepped, and the small diameter end of the fixed ring 401 is inserted into the bomb holder tube 2, and the insulating sleeve 402 is inserted into the fixed ring. 401, the conductive pin 403 is inserted into the insulating sleeve 402, one end of the conductive pin 403 is provided with an axial counterbore, the first conductive contact pin 501 and the second wire contact pin 502 are inserted into the axial counterbore, the conductive The other end of the pin 403 is provided with a hole, and the conductive pins 403 in the bomb holder tube 2 are electrically connected.

Both ends of the disposable connector 3 are provided with threads and a plurality of sealing grooves, a sealing ring is arranged in the sealing grooves, a step is arranged in the middle of the disposable connector 3, and a step for fastening is arranged on the step. groove. When the disposable connector 3 and the outer gun barrel 1 are screwed tightly, the groove can be tapped to tighten the connection between the disposable connector 3 and the outer gun barrel 1 .

Both the insulating shaft 503 and the conductive sleeve 504 are provided with a plurality of sealing grooves on the outside, and sealing rings are arranged on the sealing grooves.

A plurality of counterbores for fastening are provided on the end surface of the limiting ring 506 . The limit ring 506 can be tightened with an angle grinder wrench.

A limiting screw is arranged on the fixing ring 401, and a keyway is arranged inside the outer gun barrel 1, and the limiting screw is stuck in the keyway. The fixing ring 401 is connected with the bomb holder tube 2 by screws.

The fixing ring 401 is fixedly connected with the insulating sleeve 402 through pins. The insulating sleeve 402 is prevented from rotating in the fixing ring 401 .

The limiting sleeve 505 is fixed in the conductive sleeve 504 through a snap spring, and the limiting sleeve 505 is an insulator.

The inner walls at both ends of the outer gun barrel 1 are provided with snap springs, and the bullet holder tube 2 is fixed in the outer gun barrel 1 by the snap springs.

The working process of the present invention is as follows: firstly check the positioning plate 4 at both ends of the bullet holder tube 2 to ensure that there is no foreign matter in the counterbore of the conductive pin 403 of the positioning plate 4, and then check the first conductive pin at both ends of the electrical connector 5 in the disposable connector 3. The probe 501 and the second conductive probe 502 ensure that the probes are not contaminated with foreign matter. Connect the disposable connector 3 to the outer barrel 1, and after tightening, tap the groove on the step of the disposable connector 3 to make the connection between the disposable connector 3 and the outer barrel 1 tighter, and then use the same method Connect the outer gun barrel 1 at the other end of the disposable connector 3, connect the explosives and the switch after the perforating gun is connected to the required length in this way, and then go down to the well for construction.

Claims (10)

1. a kind of quick change perforating gun, it includes outer gun barrel (1), firing mount pipe (2) and disposable connector (3), the firing mount pipe (2) It is set in outer gun barrel (1), two quick change perforating guns are connected by disposable connector (3), it is characterised in that: described disposable It is provided with first step hole on connector (3), is inserted into electric connector (5) in stepped hole, firing mount pipe (2) both ends are provided with fixed Position disk (4), the positioning disk (4) are electrically connected with electric connector (5).

2. a kind of quick change perforating gun according to claim 1, it is characterised in that: the electric connector (5) is led including first Electric contact pilotage (501), the second conductive contact pin (502), shaft insulation (503), conducting sleeve (504), spacing collar (505), stop collar (506) it is connect with multiple power springs, disposable connector (3) both ends with outer gun barrel (1), the shaft insulation (503) is inserted Enter in first step hole, second step hole is provided on the shaft insulation (503), the first conductive contact pin (501) passes through second Rank hole, in the conducting sleeve (504) insertion second step hole, first conductive contact pin (501) and conducting sleeve (504) it Between be provided with power spring, hole is provided on the conducting sleeve (504), the second conductive contact pin (502) inserts in the hole, in hole also Inserted with power spring, the spacing collar (505) is placed on the second conductive contact pin (502), spacing collar (505) insertion second It in stepped hole and resists conducting sleeve (504), the stop collar (506) connect with first step hole inner wall and resists shaft insulation (503), spacing collar (505) and the second conductive contact pin (502) are passed through from stop collar (506) center.

3. a kind of quick change perforating gun according to claim 1, it is characterised in that: the positioning disk (4) includes fixed ring (401), insulation sleeve (402) and conductive pin (403), the fixed ring (401) be it is step-like, fixed ring (401) diameter is small One end be inserted into firing mount pipe (2), in the insulation sleeve (402) insertion fixed ring (401), conductive pin (403) the insertion insulation It covers in (402), described conductive pin (403) one end is provided with axial counterbore, the first conductive contact pin (501) and the second conducting wire contact pilotage (502) it is inserted into axial counterbore, conductive pin (403) other end is provided with hole, the conductive pin in the firing mount pipe (2) (403) it is electrically connected.

4. a kind of quick change perforating gun according to claim 1, it is characterised in that: disposable connector (3) both ends are set It is equipped with screw thread and multiple seal grooves, sealing ring is provided in the seal groove, is provided with platform in the middle part of the disposable connector (3) Rank is provided with the groove for fastening on the step.

5. a kind of quick change perforating gun according to claim 1, it is characterised in that: the shaft insulation (503) and conducting sleeve (504) outside is provided with multiple seal grooves, is provided with sealing ring on the seal groove.

6. a kind of quick change perforating gun according to claim 1, it is characterised in that: be arranged on stop collar (506) end face Multiple counterbores having for fastening.

7. a kind of quick change perforating gun according to claim 1, it is characterised in that: be arranged on the fixed ring (401) limited Position screw, the outer gun barrel (1) are internally provided with keyway, and the stop screw is stuck in keyway.

8. a kind of quick change perforating gun according to claim 1, it is characterised in that: the fixed ring (401) and insulation sleeve (402) it is fixedly connected by pin.

9. a kind of quick change perforating gun according to claim 1, it is characterised in that: the spacing collar (505) passes through circlip It is fixed in conducting sleeve (504), the spacing collar (505) is insulator.

10. a kind of quick change perforating gun according to claim 1, it is characterised in that: set on outer gun barrel (1) the both ends inner wall It is equipped with circlip, firing mount pipe (2) is fixed in outer gun barrel (1) by circlip.