CN2387264Y

CN2387264Y - Water power cutting off tool

Info

Publication number: CN2387264Y
Application number: CN 99209455
Authority: CN
Inventors: 吴恩成; 徐洪波
Original assignee: OIL RECOVERY TECHNOLOGY INST OF DAQING PETROLEUM ADMINISTRATION BUREAU
Current assignee: OIL RECOVERY TECHNOLOGY INST OF DAQING PETROLEUM ADMINISTRATION BUREAU
Priority date: 1999-04-16
Filing date: 1999-04-16
Publication date: 2000-07-12
Anticipated expiration: 2009-04-16

Abstract

The utility model relates to a water power cutting tool, which belongs to the technical field of an oilfield exploitation process and belongs to a cutting tool for increasing yield and increasing injection for an oilfield. The utility model is designed to remove the pollution at a region near a well. The utility model is mainly composed of a control part, a restoring part, and a spray gun part. In general, the utility model is applied to processes of blockage removing and injection increase of an oil well or a water well in the oilfield. The utility model has the advantages that the blockage of the zone near the well for the oil well or the water well can be removed, the liquid producing capacity of the oil well and the water absorbing capacity of the water well can be improved, etc.

Description

A kind of waterpower cutting tool

A kind of waterpower cutting tool relates to oilfield exploitation technology field, belongs to a kind of increasing yield and injection cutting tool in oil field.

Present hydraulic jet perforation technology is to utilize water under high pressure to take sand to reach the purpose of penetrating the layer of turning up the soil to the stratum injection by nozzle, owing to take the sand water under high pressure do not have the return flow line in the stratum, and spray gun can not move, and causes perforating depth shallow, can not penetrate the contaminated zone, not reach the purpose of increasing yield and injection.

The purpose of this utility model is to avoid the weak point in the above-mentioned prior art and a kind of waterpower cutting tool of designing, and its spray gun is removable, and cuts out seam in the stratum, to remove the obstruction of near wellbore zone.

The purpose of this utility model can reach by following measure.

The utility model mainly is made up of control assembly, reset components and burner elements three parts.Control assembly is made up of box cupling, tubing nipple, upper center tube, pressure cap, upper sealing ring, the ring that performs, guard circle, sealing shroud joint, central tube connecting ring, highland barley paper, sealing shroud, draining cover connecting ring, gate gurgle valve, sealing kink, lower center tube, seal protection cover, joint ring, sealing shroud lower contact, pressure ring, lower sealing ring, sealing ring etc.

Reset components is made up of spring overcoat, connector, box cupling, spring center pipe, spring base, spring, spring spacer ring, lower contact, joint etc.

Burner elements is made up of short circuit, shelves ring, spray gun, nozzle cage, nozzle, sand washing nib, wiper block, firm ball etc.

Wherein the tubing nipple of control assembly is all direct with screw threads of coupler up and down; upper center tube and lower center tube are by being embedded with the central tube connecting ring screwed connection of sealing ring; seal by highland barley paper between the two; the intercalation of upper sealing ring joint is in pressure cap; following and the sealing shroud joint screwed connection of pressure cap; seal by guard circle and sealing ring between the two; and compress the ring that performs; the outer upper and lower side of sealing shroud joint respectively with box cupling; the sealing shroud screwed connection; draining cover connecting ring places in the sealing shroud; go up with the contact of sealing shroud joint and be connected; down with the screwed connection of sealing kink; the gate gurgle valve screw thread is contained on the sealing kink, and the upper end has two seal grooves that seal protection cover and sealing ring are installed outside joint ring, and is connected with the sealing shroud contact; put into guard circle in the end slot down in it; the sealing ring and the ring that performs; and be connected with lower center tube contact, its outer lower end high compression ring screwed connection, sealing shroud lower contact up and down respectively with sealing shroud; the spring overcoat screwed connection.

The connector upper and lower side of reset components is connected with lower center tube, screw threads of coupler respectively, spring center pipe upper and lower side respectively with box cupling, joint screwed connection, the outside mounting spring of spring center pipe, separate by the spring spacer ring between spring and the spring, the two ends spring base in spring base, spring overcoat lower end and lower contact screwed connection.

The pipe nipple of burner elements is robbed screwed connection with joint, spray respectively up and down, the shelves circumfili links and is connected on the pipe nipple outside, its top is connected with the lower contact contact, there are two symmetrical holes the outside on the spray gun, respectively with the nozzle cage screwed connection, nozzle cage is connected with the nozzle intercalation, sand washing nib and wiper block welding, its upper end and spray gun screwed connection.

Compared with the prior art the utility model has following advantage:

1. the utility model can be removed the obstruction of oil-water well near wellbore zone, and plug removal radius reaches more than 1 meter, has reduced the flow resistance of near wellbore zone, has improved oil well liquid-producing ability and well water absorbing capacity.

2. the utility model is not only the effective deblocking type well stimulation of a kind of conventional well body structure well instrument, also can solve the perforation completion problem of bilayer sleeve exceptional well.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the utility model structure diagram.

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

A kind of waterpower cutting tool, it mainly is made up of control assembly, reset components and burner elements three parts;

Control assembly is made up of box cupling 1, tubing nipple 2, upper center tube 3, pressure cap 4, upper sealing ring 5, the ring 6 that performs, guard circle 7, sealing ring 8, sealing shroud joint 9, central tube connecting ring 10, highland barley paper 11, sealing shroud 12, draining cover connecting ring 13, gate gurgle valve 14, packed-piston 15, lower center tube 16, seal protection cover 17, joint ring 18, sealing shroud lower contact 19, pressure ring 20, lower sealing ring 21 etc.;

Reset components is made up of spring overcoat 22, connector 23, box cupling 24, spring center pipe 25, spring base 26, spring 27, spring spacer ring 28, lower contact 29, joint 30 etc.;

Burner elements is made up of short circuit 31, shelves ring 32, spray gun 33, nozzle cage 34, nozzle 35, sand washing nib 36, wiper block 37, firm ball 38 etc.;

Wherein the tubing nipple 2 of control assembly up and down all with box cupling 1 screwed connection, upper center tube 3 and lower center tube 16 are by being embedded with central tube connecting ring 10 screwed connections of sealing ring 8, seal by highland barley paper 11 between the two, upper sealing ring 5 intercalations are in pressure cap 4, pressure cap 4 times and 9 screwed connections of sealing shroud joint, seal by guard circle 7 and sealing ring 8 between the two, and compress perform the ring 6, sealing shroud joint 9 outer upper and lower sides respectively with box cupling 1, sealing shroud 12 screwed connections, draining cover connecting ring 13 places in the sealing shroud 12, go up with 9 contacts of sealing shroud joint and be connected, descend and packed-piston 15 screwed connections, gate gurgle valve 14 screw threads are contained on the packed-piston 15, the upper end has two seal grooves that seal protection cover 17 and sealing ring 8 are installed outside joint ring 18, and be connected with sealing shroud 12 contact, put into guard circle 7 in the end slot down in it, the sealing ring 8 and the ring 6 that performs, and be connected with lower center tube 16 contact, its outer lower end and pressure ring 20 screwed connections, sealing shroud lower contact 19 up and down respectively with sealing shroud 12, spring overcoat 22 screwed connections;

The connector 23 of reset components up and down respectively with lower center tube 16, box cupling 17 screwed connections, spring center pipe 25 upper and lower sides respectively with box cupling 24, joint 30 screwed connections, spring center pipe 25 outside mounting spring 27, separate by spring spacer ring 28 between spring and the

spring

27,27 on two ends spring in spring base 26, spring overcoat 22 lower ends with under connect 29 screwed connections;

The pipe nipple 31 of burner elements up and down respectively with joint 30, spray gun 33 screwed connections, 32 screwed connections of shelves ring are in pipe nipple 31 outsides, its top is connected with lower contact 29 contacts, there are two symmetrical holes the outside on the spray gun 33, respectively with nozzle cage 34 screwed connections, nozzle cage 34 is connected with nozzle 35 intercalations, sand washing nib 36 and wiper block 37 welding, its upper end and spray gun 33 screwed connections.

When using at the scene, at first control assembly top is connected with down-hole string, with oil pipe the utility model is lowered to precalculated position in the oil-water well, ground has connected the high pressure pump truck, steel ball 38 is dropped in the well, start pump truck, after pressure stability, begin to add sand, when pump pressure rises, liquid promotes upper center tube 3 and moves down, the central tube connecting ring 10 that is connected with upper center tube 3, draining cover connecting ring 13, gate gurgle valve 14, sealing kink 15, lower center tube 16, connector 23 moves down simultaneously, the box cupling 24 that links to each other with connector 23, spring center pipe 25, spring base 26, spring 27, spring spacer ring 28, joint 30, short circuit 31, shelves ring 32 also moves down, this moment, spring 27 was compressed, when adding sand liquid arrival nozzle 35, again pressure is carried to 20～30Mpa, the spray gun 33 that be connected with short circuit 31 this moment, nozzle cage 34, nozzle 35, sand washing nib 36, wiper block 37, just ball 38 begins to move down, high pressure is taken the sand flow body and is sprayed to the stratum by nozzle 35, work after 20～40 minutes, finish the slot construction, pump pressure is reduced to 0～1 MPa, under the effect of spring 27, above moving component resets, the upper lifting pipe post is to next cut point, repeat above step, can proceed construction.

Claims

1, a kind of waterpower cutting tool is characterized in that: it mainly is made up of control assembly, reset components and burner elements three parts;

Control assembly is by box cupling (1), tubing nipple (2), upper center tube (3), pressure cap (4), upper sealing ring (5), ring (6) performs, guard circle (7), sealing ring (8), sealing shroud joint (9), central tube connecting ring (10), highland barley paper (11), sealing shroud (12), draining cover connecting ring (13), gate gurgle valve (14), packed-piston (15), lower center tube (16), seal protection cover (17), joint ring (18), sealing shroud lower contact (19), pressure ring (20), lower sealing ring compositions such as (21);

Reset components is made up of spring overcoat (22), connector (23), box cupling (24), spring center pipe (25), spring base (26), spring (27), spring spacer ring (28), lower contact (29), joint (30) etc.;

Burner elements is made up of short circuit (31), shelves ring (32), spray gun (33), nozzle cage (34), nozzle (35), sand washing nib (36), wiper block (37), firm ball (38) etc.;

Wherein the tubing nipple of control assembly (2) up and down all with box cupling (1) screwed connection, upper center tube (3) and lower center tube (16) are by being embedded with central tube connecting ring (10) screwed connection of sealing ring (8), seal by highland barley paper (11) between the two, upper sealing ring (5) intercalation is in pressure cap (4), following and sealing shroud joint (9) screwed connection of pressure cap (4), seal by guard circle (7) and sealing ring (8) between the two, and compress the ring (6) that performs, the outer upper and lower side of sealing shroud joint (9) respectively with box cupling (1), sealing shroud (12) screwed connection, draining cover connecting ring (13) places in the sealing shroud (12), go up with sealing shroud joint (9) contact and be connected, descend and packed-piston (15) screwed connection, gate gurgle valve (14) screw thread is contained on the packed-piston (15), the upper end has two seal grooves that seal protection cover (17) and sealing ring (8) are installed outside joint ring (18), and be connected with sealing shroud (12) contact, put into guard circle (7) in the end slot down in it, the sealing ring (8) and the ring (6) that performs, and be connected with lower center tube (16) contact, its outer lower end and pressure ring (20) screwed connection, sealing shroud lower contact (19) up and down respectively with sealing shroud (12), spring overcoat (22) screwed connection;

The connector of reset components (23) up and down respectively with lower center tube (16), box cupling (17) screwed connection, spring center pipe (25) upper and lower side respectively with box cupling (24), joint (30) screwed connection, the outside mounting spring of spring center pipe (25) (27), separate by spring spacer ring (28) between spring and the spring (27), two ends spring (27) seat in spring base (26), spring overcoat (22) lower end with under connect (29) screwed connection;

The pipe nipple of burner elements (31) up and down respectively with joint (30), spray gun (33) screwed connection, (32) screwed connection of shelves ring is in pipe nipple (31) outside, its top is connected with lower contact (29) contact, spray gun (33) is gone up the outside two symmetrical holes, respectively with nozzle cage (34) screwed connection, nozzle cage (34) is connected with nozzle (35) intercalation, sand washing nib (36) and wiper block (37) welding, its upper end and spray gun (33) screwed connection.