CN218030098U

CN218030098U - Continuous sand washing device for continuous oil pipe

Info

Publication number: CN218030098U
Application number: CN202221637220.1U
Authority: CN
Inventors: 张珣; 李秀花; 高英华
Original assignee: Tianjin Qinghua Energy Technology Co ltd
Current assignee: Tianjin Qinghua Energy Technology Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-12-13
Anticipated expiration: 2032-06-27

Abstract

The utility model provides a continuous sand washing device for a continuous oil pipe, which comprises a liquid inlet pipe, a continuous oil pipe joint, a tapered reducing booster pipe, a connecting pipe, a rotary nozzle, an annular plunger, a first sealing ring, a sand discharge hole, a self-resetting sealing baffle structure and an anti-vibration detachable supporting ring structure, wherein the upper end of the liquid inlet pipe is in threaded connection with the continuous oil pipe joint; the lower end of the liquid inlet pipe is integrally connected with a tapered reducing pressure pipe, and the lower end of the tapered reducing pressure pipe is integrally connected with a connecting pipe; the lower end of the connecting pipe is in threaded connection with a rotary spray head; the middle part of the outer wall of the liquid inlet pipe is integrally connected with an annular plunger, annular grooves are respectively formed in the upper side and the lower side of the outer wall of the annular plunger, and first sealing rings are sleeved on the inner sides of the annular grooves. The utility model discloses the not good problem of sediment outflow effect is favorable to solving in the setting of external screw thread annular mount pad, mounting bracket, slide bar, sealing baffle, dog and sealing layer.

Description

Continuous sand washing device for continuous oil pipe

Technical Field

The utility model belongs to the technical field of oil well sand washing equipment, especially, relate to a continuous sand washing device for coiled tubing.

Background

The continuous sand washing device for the coiled tubing is a tool for washing and discharging sand from an oil well, is important equipment for recovering sand oil-gas reservoir oil and water well production, and at present, the common continuous sand washing device for the coiled tubing on the market mainly comprises a central cylinder, an outer cylinder, a diversion sleeve, a rotary nozzle and the like.

The existing continuous sand washing device for the coiled tubing has some problems in the use process, such as:

1. the sand discharge effect is poor;

2. during sand washing, the pipeline is easy to vibrate, so that the service life of the device is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem who exists, the utility model provides a continuous sand washing device for coiled tubing, wherein the utility model discloses a can realize through following technical scheme:

a continuous sand washing device for a continuous oil pipe comprises a liquid inlet pipe, a continuous oil pipe joint, a tapered reducing booster pipe, a connecting pipe, a rotary spray head, an annular plunger, a first sealing ring, a sand discharge hole, a self-resetting sealing baffle plate structure and an anti-vibration detachable supporting ring structure, wherein the upper end of the liquid inlet pipe is in threaded connection with the continuous oil pipe joint; the lower end of the liquid inlet pipe is integrally connected with a tapered reducing pressure pipe, and the lower end of the tapered reducing pressure pipe is integrally connected with a connecting pipe; the lower end of the connecting pipe is in threaded connection with a rotary nozzle; the middle part of the outer wall of the liquid inlet pipe is integrally connected with an annular plunger, the upper side and the lower side of the outer wall of the annular plunger are respectively provided with an annular groove, and the inner sides of the annular grooves are respectively sleeved with a first sealing ring; the periphery of the middle part inside the annular plunger is respectively and longitudinally provided with a sand discharge hole; the self-resetting sealing baffle plate structure is connected with the sand discharge hole; the anti-vibration detachable support ring structure is connected with the connecting pipe; the self-resetting sealing baffle structure comprises an external thread annular mounting seat, a mounting frame, a sliding rod, a sealing baffle, a stop block and a sealing layer, wherein the external thread annular mounting seat is respectively in threaded connection with the upper side inside the sand discharge hole; the middle part of the inner side of the external thread annular mounting seat is integrally connected with a mounting frame; jacks are formed in the middle of the inner part of each mounting frame, and sliding rods are inserted into the jacks; the upper end of the sliding rod is integrally connected with the middle part of the lower part of the sealing baffle plate respectively, and the sealing baffle plates are positioned at the periphery of the middle part of the upper part of the annular plunger respectively; the lower end of the sliding rod is respectively connected with the middle part of the upper part of the stop block through bolts; the upper side of each sand discharge hole is covered with one sealing baffle; the lower parts of the sealing baffles are all glued with sealing layers.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in, external screw thread annular mount pad, the mounting bracket, the slide bar, sealing baffle, the setting of dog and sealing layer is favorable to solving the not good problem of sand discharging effect.

The utility model discloses in, the removable supporting ring of anti-vibration construct set up, be favorable to realizing the function of preventing the pipeline vibration.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic structural view of the self-resetting sealing baffle structure of the present invention;

fig. 3 is a schematic structural view of the vibration-proof detachable support ring structure of the present invention.

In the figure:

1. a liquid inlet pipe; 2. a coiled tubing joint; 3. a tapered reducing booster pipe; 4. a connecting pipe; 5. rotating the spray head; 6. an annular plunger; 7. a first seal ring; 8. a sand discharge hole; 9. a self-resetting sealing baffle structure; 91. an external thread annular mounting seat; 92. a mounting frame; 93. a slide bar; 94. sealing the baffle; 95. a stopper; 96. a sealing layer; 10. an anti-vibration detachable support ring structure; 101. a shockproof support ring; 102. a second seal ring; 103. a detachable sleeve; 104. a connecting rod.

Detailed Description

The present invention is described in detail with reference to the accompanying drawings, as shown in fig. 1 and fig. 2, a continuous sand washing device for coiled tubing comprises a liquid inlet pipe 1, a coiled tubing joint 2, a tapered reducing booster pipe 3, a connecting pipe 4, a rotary nozzle 5, an annular plunger 6, a first sealing ring 7 and a sand discharge hole 8, wherein the upper end of the liquid inlet pipe 1 is connected with the coiled tubing joint 2 through a thread; the lower end of the liquid inlet pipe 1 is integrally connected with a tapered reducing pressure increasing pipe 3 to play a role in increasing pressure, and the lower end of the tapered reducing pressure increasing pipe 3 is integrally connected with a connecting pipe 4; the lower end of the connecting pipe 4 is in threaded connection with a rotary nozzle 5, so that the rotary nozzle has the function of facilitating rotary sand washing; the middle part of the outer wall of the liquid inlet pipe 1 is integrally connected with an annular plunger 6, the upper side and the lower side of the outer wall of the annular plunger 6 are respectively provided with an annular groove, and the inner side of each annular groove is sleeved with a first sealing ring 7 to play a role in sealing a gap between the annular plunger 6 and an external oil well; and sand discharge holes 8 are respectively and longitudinally formed in the middle and the periphery of the inside of the annular plunger 6.

The continuous sand washing device for the coiled tubing further comprises a self-resetting sealing baffle structure 9 and an anti-vibration detachable support ring structure 10, and the self-resetting sealing baffle structure 9 is connected with the sand discharge hole 8, so that the function of improving the sand discharge effect is facilitated; the detachable shockproof supporting ring structure 10 is connected with the connecting pipe 4, and the shockproof function is realized.

The self-resetting sealing baffle structure 9 comprises an external thread annular mounting seat 91, a mounting frame 92, a sliding rod 93, a sealing baffle 94, a stop block 95 and a sealing layer 96, wherein the external thread annular mounting seat 91 is respectively in threaded connection with the upper side inside the sand discharge hole 8; the middle part of the inner side of the external thread annular mounting seat 91 is uniformly connected with a mounting frame 92; jacks are formed in the middle of the inner part of each mounting frame 92, and sliding rods 93 are inserted into the jacks; the upper end of the sliding rod 93 is respectively and integrally connected with the middle part of the lower part of the sealing baffle 94, and the sealing baffle 94 is respectively positioned at the middle and the periphery of the upper part of the annular plunger 6; the lower ends of the sliding rods 93 are respectively connected with the middle part of the upper part of the stop block 95 through bolts; the upper side of each sand discharge hole 8 is covered with one sealing baffle 94; the lower part of the sealing baffle 94 is glued with a sealing layer 96, during sand washing, an external continuous oil pipe can be connected with the continuous oil pipe joint 2, then the device is put into an external oil well, when the rotary spray head 5 reaches a sand layer in the oil well, an operator can pump sand washing liquid into the liquid inlet pipe 1 through the external continuous oil pipe, then the sand washing liquid can enter the connecting pipe 4 through the tapered reducing booster pipe 3, then the sand washing liquid is sprayed out through the rotary spray head 5, at the moment, the sand layer in the oil well can be washed up by the sand washing liquid, the sand washing liquid can be mixed with sand in the oil well, when the device continuously descends from the inside of the oil well, the sand washing liquid and the sand can pass through the sand discharge hole 8 and upwards push the sealing baffle 94 to flow to the upper part of the annular plunger 6; when the sediment outflow, but operating personnel upward movement device, seal baffle 94 can be because of the effect self-sealing sand discharge hole 8 of pressure this moment, thereby avoid the sand washing liquid and the sand on annular plunger 6 upper portion to leak to annular plunger 6 lower part through sand discharge hole 8, because of annular plunger 6 is sealed through first sealing washer 7 and oil well inner wall, again because of seal baffle 94 and annular plunger 6 are sealed through sealing layer 96, thereby can avoid the problem that sand washing liquid and sand leaked, and then can effectively improve the sediment outflow effect, solve the not good problem of sediment outflow effect.

In this embodiment, as shown in fig. 3, the anti-vibration detachable support ring structure 10 includes an anti-vibration support ring 101, a second seal ring 102, a detachable sleeve 103 and a connection rod 104, wherein an annular installation groove is formed in a middle portion of an outer wall of the anti-vibration support ring 101, and the second seal ring 102 is sleeved on an inner side of the annular installation groove; the shockproof support ring 101 is arranged at the lower part of the outer side of the detachable sleeve 103; connecting rod 104 one end respectively with removable sleeve pipe 103 outer wall downside position bolted connection setting all around, the other end respectively with the middle position bolted connection setting all around of the inner wall of shockproof support ring 101, at the in-process of washing sand, connecting pipe 4 can produce certain vibrations, thereby can lead to the life reduction of device, operating personnel can install removable sleeve pipe 103 at the outer wall of connecting pipe 4 this moment, when the device gets into in the well, shockproof support ring 101 then can contact with the oil well inner wall, and second sealing washer 102 can fill the clearance between shockproof support ring 101 and the oil well inner wall, and shockproof support ring 101 is connected with removable sleeve pipe 103 through connecting rod 104 again, and then can avoid connecting pipe 4 to take place the problem of vibrations in the course of the work, realize the function of anti-vibration.

In this embodiment, specifically, the detachable sleeve 103 is sleeved on the upper side of the outer wall of the connecting pipe 4, and the connecting pipe 4 is connected with the detachable sleeve 103 through a bolt.

In this embodiment, specifically, the sealing baffle 94 is made of a stainless steel plate with a circular cross section, which plays a role in blocking the sand discharge hole 8.

In this embodiment, specifically, the sealing layer 96 is made of a rubber layer, and plays a role in sealing the gap between the annular plunger 6 and the sealing baffle 94.

In this embodiment, specifically, the anti-vibration support ring 101 is a stainless steel ring.

In this embodiment, specifically, the second seal ring 102 and the first seal ring 7 both adopt rubber seal rings, and the first seal ring 7 plays a role in sealing a gap between the annular plunger 6 and the external oil well, and the second seal ring 102 plays a role in filling a gap between the shockproof support ring 101 and the external oil well, thereby avoiding the problem that the shockproof support ring 101 collides with the inner wall of the oil well.

In this embodiment, specifically, the rotary nozzle 5 is an automatic stainless steel rotary nozzle, which plays a role in sand washing.

Principle of operation

The utility model discloses in, during the sand washing, can be connected external coiled tubing with coiled tubing joint 2, drop into external oil well inside with the device afterwards, when rotatory nozzle 5 reachd the sand bed of oil well inside, operating personnel accessible external coiled tubing pumps the washing sand liquid to the inside pump sending of feed liquor pipe 1, the washing sand liquid can enter into inside connecting pipe 4 through toper reducing booster pipe 3 afterwards, the washing sand liquid is spout through rotatory nozzle 5 afterwards, the sand bed of oil well inside then can be washed up by the washing sand liquid this moment, and the washing sand liquid then can be mixed together with the sand of oil well inside, when the device continues descending from the oil well inside, washing sand liquid and sand can pass through sand discharge hole 8, and upwards back up behind the overhead gage 94, flow to the upper portion of annular plunger 6; when the sand is discharged, an operator can move the device upwards, and at the moment, the sealing baffle 94 can automatically seal the sand discharge hole 8 under the action of pressure, so that sand washing liquid and sand on the upper part of the annular plunger 6 are prevented from leaking to the lower part of the annular plunger 6 through the sand discharge hole 8, the annular plunger 6 is sealed with the inner wall of the oil well through the first sealing ring 7, and the sealing baffle 94 and the annular plunger 6 are sealed through the sealing layer 96, so that the problem of sand washing liquid and sand leakage can be avoided, the sand discharge effect can be effectively improved, and the problem of poor sand discharge effect is solved; at the in-process of washing sand, connecting pipe 4 can produce certain vibrations to can lead to the life of device to reduce, operating personnel can install removable sleeve pipe 103 at the outer wall of connecting pipe 4 this moment, when the device got into the well, the support ring 101 that takes precautions against earthquakes then can contact with the oil well inner wall, and second sealing washer 102 can fill the clearance between support ring 101 and the oil well inner wall that takes precautions against earthquakes, and support ring 101 that takes precautions against earthquakes is connected with removable sleeve pipe 103 through connecting rod 104 again, and then can avoid connecting pipe 4 to take place the problem of vibrations in the course of the work, realize the function of anti-vibration.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. The continuous sand washing device for the continuous oil pipe is characterized by comprising a liquid inlet pipe (1), a continuous oil pipe joint (2), a tapered reducing booster pipe (3), a connecting pipe (4), a rotary spray head (5), an annular plunger (6), a first sealing ring (7), a sand discharge hole (8), a self-resetting sealing baffle structure (9) and an anti-vibration detachable supporting ring structure (10), wherein the upper end of the liquid inlet pipe (1) is in threaded connection with the continuous oil pipe joint (2); the lower end of the liquid inlet pipe (1) is integrally connected with a tapered reducing booster pipe (3), and the lower end of the tapered reducing booster pipe (3) is integrally connected with a connecting pipe (4); the lower end of the connecting pipe (4) is in threaded connection with a rotary spray head (5); the middle part of the outer wall of the liquid inlet pipe (1) is integrally connected with an annular plunger (6), annular grooves are respectively formed in the upper side and the lower side of the outer wall of the annular plunger (6), and first sealing rings (7) are sleeved on the inner sides of the annular grooves; the periphery of the middle part inside the annular plunger (6) is respectively and longitudinally provided with sand discharge holes (8); the self-resetting sealing baffle structure (9) is connected with the sand discharge hole (8); the vibration-proof detachable supporting ring structure (10) is connected with the connecting pipe (4).

2. The continuous sand washing device for the coiled tubing as claimed in claim 1, characterized in that the self-resetting sealing baffle structure (9) comprises an externally threaded annular mounting seat (91), a mounting frame (92), a sliding rod (93), a sealing baffle (94), a stop block (95) and a sealing layer (96), wherein the externally threaded annular mounting seats (91) are respectively screwed on the inner upper sides of the sand discharge holes (8); the middle part of the inner side of the external thread annular mounting seat (91) is integrally connected with a mounting frame (92); jacks are formed in the middle of the inner part of the mounting frame (92), and sliding rods (93) are inserted into the jacks; the upper end of the sliding rod (93) is integrally connected with the middle part of the lower part of the sealing baffle plate (94), and the sealing baffle plate (94) is positioned at the periphery of the middle part of the upper part of the annular plunger (6); the lower end of the sliding rod (93) is respectively connected with the middle part of the upper part of the stop block (95) through bolts; the upper side of each sand discharge hole (8) is covered with one sealing baffle (94); and the lower parts of the sealing baffles (94) are all glued with sealing layers (96).

3. The continuous sand washing device for the coiled tubing of claim 1, characterized in that the shock-proof detachable support ring structure (10) comprises a shock-proof support ring (101), a second seal ring (102), a detachable sleeve (103) and a connecting rod (104), wherein an annular mounting groove is formed in the middle of the outer wall of the shock-proof support ring (101), and the second seal ring (102) is sleeved inside the annular mounting groove; the shockproof support ring (101) is arranged at the lower part of the outer side of the detachable sleeve (103); one end of the connecting rod (104) is respectively in bolted connection with the peripheral part of the lower side of the outer wall of the detachable sleeve (103), and the other end of the connecting rod is respectively in bolted connection with the peripheral part of the middle of the inner wall of the shockproof support ring (101).

4. The continuous sand washing device for the coiled tubing as claimed in claim 3, wherein the detachable sleeve (103) is sleeved on the upper side of the outer wall of the connecting pipe (4), and the connecting pipe (4) is in bolted connection with the detachable sleeve (103).