The invention relates to a perforating device comprising one or more perforating gun (1) installed in a perforating body (9) , a perforating gun head (2) in the uppermost end of the perforating body (9), a perforating gun base (7) in the lowermost end of the perforating body (9) and a detonating dev
The invention relates to a perforating device comprising one or more perforating gun (1) installed in a perforating body (9) , a perforating gun head (2) in the uppermost end of the perforating body (9), a perforating gun base (7) in the lowermost end of the perforating body (9) and a detonating device (3) installed inside or outside the perforating head (2), in which a charge frame ( 10, 22) is installed inside of the perforating body (9). A plurality of perforator unit connected each other by a detonating cord (15) are provided on the charge frame (10, 22). Every perforator unit comprises an explosive box (11) in a charge socket, a charge (13) in charge housing (12) and energy-bearing media (14). Moreover, an energy-bearing media sleeve (28) is provided outside of the perforating device. The perforating device is easy to manufacture with low cost and can be used securely in the operation.
대표청구항▼
What is claimed is: 1. A high energy combined perforating device for oil-gas wells, comprising a one-section perforating gun or a multisection perforating gun (1), a perforating gun top (2) provided at an upper end of an uppermost section perforating gun (1), a perforating gun bottom (7) provided a
What is claimed is: 1. A high energy combined perforating device for oil-gas wells, comprising a one-section perforating gun or a multisection perforating gun (1), a perforating gun top (2) provided at an upper end of an uppermost section perforating gun (1), a perforating gun bottom (7) provided at a lower end of a lowermost perforating gun (1), an igniting device (3) inside or outside of the perforating gun top (2), a charge strip (10, 22) installed in a perforating carrier (9), a plurality of unit perforators mounted in the charge strip (10, 22) and a detonating cord ( 15) connects with each of the unit perforators, said energetic material (14) being formed as granular material or solid piece which is provided axially with a detonating cord hole ( 5'), the detonating cord (15) being installed in the detonating cord hole (5') and connected with ends of shaped charges (13) of a perforating charge. 2. The high energy combined perforating device for oil-gas wells as claimed in claim 1, wherein for said multisection perforating gun (1) there is provided on a lower end of an upper section perforating gun (1) a lower connector ( 6) having a built-in booster (8) connected with the detonating cord (15) and there is provided on an upper end of a neighboring lower section perforating gun (1) an upper connector (5) having a built-in booster ( 8) connected with the detonating cord (15), the upper section perforating gun (1) and the lower section perforating gun (1) being connected through the upper and lower connectors (5, 6). 3. The high energy combined perforating device for oil-gas wells as claimed in claim 1, wherein each said unit perforator comprises a charge socket (11') installed radially in an explosive box ( 11), a charge housing (12) provided in the charge socket ( 11'), said perforating charge ( 13) being in the charge housing (12), the detonating cord ( 15) being fixed on a positioning clip (13-1) and the energetic material (14) being provided in the explosive box ( 11). 4. The high energy combined perforating device for oil-gas wells as claimed in claim 3, characterized in that a screwed slot for the detonating cord is provided in a lateral surface of the explosive box ( 11) and the detonating cord ( 15) is wound on the lateral surface of the explosive box (11) along the screwed slot to connect with the base of a charge (13). 5. The high energy composite perforating device for oil-gas wells as claimed in claim 3, characterized in that said detonating cord (15) is installed in a body of the perforating gun (9) and outside of the perforating carrier ( 9), and is connected with a base of the charge (13). 6. The high energy composite perforating device for oil-gas wells as claimed in claim 1, characterized in that at an axial length of the perforating gun body (9) there are provided radially a scallop (2') and a pressure-relief vent (1') in an opposite direction to said scallop, said scallop ( 2') and pressure-relief vent (1') being of different axial lengths and different phases and are arranged alternatively based on a common spiral direction, and the pressure-relief vent (1') is covered with a sealing cap. 7. The high energy combined perforating device for oil-gas wells as claimed in claim 1, characterized in that said charge strip ( 10) comprises a pair of charge sockets (3') installed radially at a same axial length in a tubular body and are symmetrical to a central axis of the tubular body, two neighboring charge sockets (3 ') being of different axial lengths and different phases and are arranged alternatively and in one-to-one correspondence with scallops (2') or pressure-relief vents ( 1') on a respective perforating gun ( 9), and charge strip positioning holes (4') are provided on side walls of both ends of the tubular body. 8. The high energy combined perforating device for oil-gas wells as claimed in claim 6, characterized in that said perforating gun body (9) has two radially opposite pressure-relief vents ( 1 ') at an axial length of the gun body ( 9). 9. The high energy combined perforating device for oil-gas wells as claimed in claim 8, characterized in that each of said pressure-relief vents (1') on the perforating gun body (9) is provided with an arched sealing cap. 10. The high energy combined perforating device for oil-gas wells as claimed in claim 9, characterized in that said arched sealing cap comprises an arched steel plate (16 ) with rubber gasket ( 17) attached on its top surface, said rubber gasket ( 17) having a cone angle a of 15~45째. 11. The high energy combined perforating device for oil-gas wells as claimed in claim 9, characterized in that said arched sealing cap comprises a circular steel plate ( 26) with a top surface chamfered at an angle b of 30~60째 and attached to the top surface of the circular steel plate (26) is a rubber gasket (27) having a cone angle of 15~45째. 12. The high energy combined perforating device for oil-gas wells as claimed in claim 1, characterized in that a positioning mechanism is installed between the upper, lower ends of the charge strip (10, 22) and the perforating carrier (9) to restrict the charge strip (10, 22) to rotate and to move axially relatively to the perforating gun body ( 9), and the positioning mechanism comprises: a positioning ring ( 18) provided in the perforating carrier (9) with two ends of the ring fixedly connected with the charge strip (10) through a connecting member; a positioning key (19) with one end fixed on the positioning ring (18) and the other end in a positioning slot (8') in the perforating carrier (9); and a limiting screw cover (20) mounted outside the positioning ring (18). 13. The high energy combined perforating device for oil-gas wells as claimed in claim 12, characterized in that said positioning ring (18) is provided with a positioning ring positioning hole (6 ') radially on a side wall of the positioning ring ( 18), and the connecting member is inserted into the positioning hole (6 ') and a charge strip positioning hole (4') on the end of the charge strip (10), and the circular end surface of the positioning ring ( 18) is provided with a positioning slot (7') for receiving the positioning key (19). 14. The high energy combined perforating device for oil-gas wells as claimed in claim 1, characterized in that said charge strip ( 22) is machined radially to provide a tail hole (12') and a unit perforator window (9') at common axial length, the unit perforator window (9짖) has a shape of a rectangle with its center line to coincide with a center line of the tail hole (12') at the same axial length, a neighboring tail hole ( 12') and unit perforator window (9') of different axial lengths and different phases are arranged alternatively according to a common same spiral direction, the positions of the tail hole (12') of different axial lengths and different phases are in one-to-one correspondence with pressure-relief vents (1') of the perforating carrier (9), the positions of a unit perforator window (9') are in one-to-one correspondence with scallops (2') on the perforating carrier ( 9), and on both sides along the axial direction of the unit perforator windows (9') there are formed respectively a locking slot (10') while there is provided with a charge positioning hole (14') on each side wall of the two ends of the charge strip ( 22). 15. The high energy composite perforating device for oil-gas wells as claimed in claim 14, characterized in that said unit perforator is mounted in the unit perforator window (9') of the charge strip (22) and comprises a variable diameter charge socket (13') positioned in an axially middle place of an explosive box (23) and formed radially; each of two locking sheets (24) provided at an axial end and outside of the explosive box (23) and being able to lock the explosive box (23) in the unit perforator window (9 '); a detonating cord slot (11') formed on an outer cylindrical surface of the explosive box (23), a shaped charge (13) installed in the charge socket (13') of the explosive box ( 23), the space in the explosive box (23) being provided with the energetic material (25), and the detonating cord (15) being positioned in the detonating cord slot (11') and connected with the gun bottom of the shaped charges (13). 16. The high energy combined perforating device for oil-gas wells as claimed in claim 14, characterized in that the gun bottom ( 7) is provided with a pressure-relief slot (30). 17. The high energy combined perforating device for oil-gas wells as claimed in claim 14, characterized in that said perforating gun body (9) is 1 meter long and has 5~20 unit perforators in the charge strip (10).
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Rytlewski Gary L. (League City TX), Angularly shaped unitary structured base strip comprised of a specific material adapted for phasing charges in a perfora.
Snider Philip M. ; Haney Joseph P. ; Haney Robert L.,CAX ; Wesson David S. ; Cuthill David A.,CAX, Apparatus and method for perforating and stimulating a subterranean formation.
Ford Franklin C. (3459 Edison Way Fremont CA 94538) Hill Gilman A. (6200 Plateau Dr. Englewood CO 80110) Vincent Coye T. (1201 Eva Ave. Los Altos CA 94022), High-velocity jet and propellant fracture device for gas and oil well production.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.