CN208982582U - TCP hydraulic radial damper - Google Patents

Abstract

The utility model discloses a kind of TCP hydraulic radial dampers, including top connection, central axis, damping spring, damping block, cushion socket and lower contact, cushion socket, damping block and damping spring form hydraulic shock-absorption cabin, top connection and lower contact seal the top and bottom for being fixed on central axis respectively, cushion socket is arranged can rotate freely on center shaft and on center shaft, more than one piece damping block is disposed radially on cushion socket, damping spring is arranged between damping block and cushion socket.The impact force that the utility model can reduce perforation moment shakes the radial impact of perforation tubular column and test equipment, to achieve the purpose that protect tubing string and test equipment.

Description

TCP hydraulic radial damper

Technical field

The utility model relates to a kind of TCP hydraulic radial dampers, belong to oil/gas well oil tube transmission perforation field of operation.

Background technique

In oil/gas well horizontal well perforation completion practice, since the perforation number of plies is more, perforation segment length, perforating gun shoots quantity More, the radial impact force generated after perforation is big.Simultaneously in horizontal segment due to gravity, perforating gun is not placed in the middle in casing, partially Under be adjacent to casing wall, not only influence perforating bullet punching quality in perforation, reduce operation effectiveness, also make wellbore pressure unbalanced, Compression shock is generated, working string is damaged.The best way is to keep perforating gun placed in the middle.

In oil/gas well completion practice, TCP combined well testing is a kind of common operation mode, TCP combined well testing set For two kinds of well-completing process of perforation and test in one, it is easy to operate, with high content of technology, the achievable perforation of tubing string and test next time Two operations can obtain the multinomial physical parameter of stratum and fluid within the shortest time, promptly and accurately recognize oil reservoir, ensure that The accuracy of well logging and formation testing；It reduces tubing string to remove, saves operating expenses and time, scientific volume increase can be instructed to arrange in time It applies, increases economic efficiency, it is often more important that high-pressure oil-gas well plays lower tubular column bring risk after can avoid perforation, effectively improves The safety of system, reliability.

Tubing string completes stratum perforation and test to TCP combined well testing next time, and working string is more complicated than conventional perforation tubing string, Including test equipment (O valve, N valve, RD sampler, hydraulic circulation valve, thermobarometer, sensor etc.), packer, damper, Priming device, perforating gun etc..When operation, tubing string is first transferred to purpose stratum, school depth, set packer, then ground caber or is added Injection hole finally carries out formation testing.

Purpose stratum is by trap after packer setting, when perforation, generates huge energy after perforating bullet detonation, makes trap section Pressure moment increases, while generating larger pressure oscillations wave and impact force.Huge concussion and impact may be such that packer loosens, Deblocking causes follow-up test operation to fail.Test equipment precise structure, it is at high cost, by larger pressure oscillations and impact force Shi Keneng damage.Simultaneously when pressure and impact force are larger, working string may be damaged, and occurred flattening, be distorted, fracture, cause Work accident.

Summary of the invention

The purpose of the utility model is to overcome the above problem of the existing technology, a kind of TCP hydraulic radial is provided and is subtracted Shake device.The impact force that the utility model can reduce perforation moment shakes the radial impact of perforation tubular column and test equipment, with Achieve the purpose that protect tubing string and test equipment.

To achieve the above object, the technical solution adopted in the utility model is as follows:

A kind of TCP hydraulic radial damper, it is characterised in that: including top connection, central axis, damping spring, damping block, subtract Seat and lower contact are shaken, cushion socket, damping block and damping spring form hydraulic shock-absorption cabin, and top connection and lower contact seal fixation respectively In the top and bottom of central axis, cushion socket is arranged can rotate freely on center shaft and on center shaft, along diameter on cushion socket To more than one piece damping block is provided with, damping spring is arranged between damping block and cushion socket.

The cushion socket both ends pass through top connection respectively and lower contact is fixed, and cushion socket both ends pass through top connection under respectively Connector is fixed on cushion socket.

The top connection and lower contact are connected through a screw thread respectively to be fixed on center shaft, and the place of being connected and fixed is provided with stop Screw, top connection and lower contact and central axis pass through seal with O ring respectively.

6 damping blocks are provided on the cushion socket, every damping block is correspondingly arranged 5 damping springs, 6 damping block edges 360 ° of circumference radial equipartitions of cushion socket.

Be provided with the limiting groove for limiting damping block movement travel on the cushion socket, damping block and limiting groove it Between gap be damping block movement travel.

Passing hole is provided on the central axis.

Using utility model has the advantages that

1, it is not placed in the middle to can solve horizontal well perforation tubing string for the utility model, pressure after the detonation of TCP combined well testing perforating gun The influence of Sasser and radial impact force to test equipment and working string, plays a protective role, and can prevent tubing string and tester Device damage improves job success ratio, reduces operating cost, increases operation effectiveness.

2, spring-compressed, hydraulic shock-absorption principle are used in the utility model, structure is simple, reliable operation, damping effect It is good.

3, the utility model product latus rectum is big, and circulation area is big, can pass through hydraulic radial damper with tripping in test equipment It is tested to tubing string lower part, increases test timeliness, accuracy, accuracy.The well control circulation that can carry out big flow, improves and makees Industry safety.

4, in the utility model, cushion socket is assembled on center shaft, is freely rotatable, and damping effect is improved.

5,6 damping blocks, 30 damping springs are provided in the utility model, on cushion socket, it is radially equal by 360 ° of circumference Cloth, quantity, position are balanced.

6, in the utility model, cushion socket intensity is high, and anti-impact force and resistance to pressure difference performance are good.

7,6 hydraulic shock-absorption cabins are provided on cushion socket can be discharged and aspirate well liquid, good damping effect.

8, it is provided with limiting groove on cushion socket, by cooperating with damping block, damping block movement travel can be limited, it is ensured that subtract Shake spring is not crushed to death.

9, damping bulk strength is high, and shock resistance is good.It when going into the well, is adjacent in internal surface of sleeve pipe, keeps tubing string placed in the middle, improve perforation Operation effectiveness.

10, damping block slows down tubing string impact by the reciprocating motion of radial direction, compression shock absorption spring and well liquid.

11, damping spring is high-strength spring, and hardness height, good toughness have excellent compression strength, fatigue behaviour.Number Amount is more, is evenly distributed, the percussion after being able to bear perforation, and constantly compression and rebound supports damping block to diametrically reciprocate.

12, the utility model compressive resistance is high, and acid-proof, alkali prevention, anti-sulphur performance are good, and each part has been all made of seal with O ring, Good pressure-resistant performance, can acid-proof, alkali prevention, anti-sulphur.

To sum up, the working principle of the utility model combination spring-compressed, hydraulic shock-absorption realizes damping by simple structure Function, structure is simple, easy to use, and damping is reliable.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is utility model works schematic illustration；

Fig. 3 is the radial section structural schematic diagram in Fig. 1 at damping block；

Fig. 4 is the radial section structural schematic diagram in Fig. 2 at damping block.

In the figure, it is marked as 1, top connection, 2, O-ring, 3, limit screw, 4, central axis, 5, damping spring, 6, damping block, 7, cushion socket, 8, lower contact.

Specific embodiment

Embodiment 1

A kind of TCP hydraulic radial damper, including top connection 1, central axis 4, damping spring 5, damping block 6,7 and of cushion socket Lower contact 8, cushion socket 7, damping block 6 and damping spring 5 form hydraulic shock-absorption cabin, and top connection 1 and lower contact 8 seal fixation respectively In the top and bottom of central axis 4, cushion socket 7 is set on central axis 4 and can rotate freely on central axis 4, on cushion socket 7 It is disposed radially more than one piece damping block 6, damping spring 5 is arranged between damping block 6 and cushion socket 7.

7 both ends of cushion socket pass through top connection 4 respectively and lower contact 8 is fixed, and 7 both ends of cushion socket pass through top connection respectively 1 and lower contact 8 be fixed on cushion socket 7.

The top connection 1 and lower contact 8 are connected through a screw thread respectively to be fixed on central axis 4, and the place of being connected and fixed is provided with Limit screw 3, top connection 1 and lower contact 8 are sealed by O-ring 2 respectively with central axis 4.

6 damping blocks 6 are provided on the cushion socket 7, every damping block 6 is correspondingly arranged 5 damping springs, 5,6 dampings 360 ° circumference radial equipartitions of the block 6 along cushion socket 7.

The limiting groove for limiting 6 movement travel of damping block is provided on the cushion socket 7, damping block 6 and limit are recessed Gap between slot is the movement travel of damping block.

Passing hole is provided on the central axis 4.

When work, damping block 6 is close to internal surface of sleeve pipe, and to interior movement after damping block 6 is acted on by radial impact force, compression subtracts Spring 5 is shaken, well liquid inside hydraulic shock-absorption cabin is squeezed, well liquid is pressurized from cushion socket 7 and 6 fit clearance of damping block and is discharged, compression After certain stroke, damping spring 5 opens, and damping block 6 is pushed to move out, and suction well liquid enters hydraulic shock-absorption cabin, by well liquid Extrusion and swabbing action reduce radial impact energy and pressure oscillations wave.6 damping blocks 6 are provided on cushion socket 7, it is radial to rush Hitting power causes tubing string or so to shake, and when the damping block 6 of side compression discharge well liquid, the damping block 6 of the other side then opens suction Well liquid, it is ensured that discharge is balanced with suction well liquid when radial motion.

Damping block 6 constantly diametrically reciprocates, and compresses and opens by damping spring 5, and well liquid is constantly aspirated double with extrusion Recast is used, and reducing radial impact force and pressure oscillations wave influences working string.

Embodiment 2

The present embodiment combination attached drawing is described further the utility model.

A kind of hydraulic radial damper, including top connection 1, O-ring 2, limit screw 3, central axis 4, damping spring 5, subtract Block 6, cushion socket 7, lower contact 8 are shaken, oil/gas well completion practice field is used for.

Cushion socket 7, damping block 6, damping spring 5 form hydraulic shock-absorption cabin when the work, and inner space is full of well liquid. Hydraulic shock-absorption cabin relies on compression shock absorption spring 5, discharge and the internal well liquid of suction in operation, plays cushioning effect.

The top connection 1, which relies on, to be threadedly coupled in fixed center axis 4, the sealing of O-ring 2,3 retaining of limit screw.

The cushion socket 7 is assemblied on central axis 4, fixed by the top connection 1 at both ends, lower contact 8, can be in central axis 4 On rotate freely.

6 damping blocks, 6,30 damping springs 5 are provided on the cushion socket 7, by 360 ° of circumference radial equipartitions, by upper Connector 1, lower contact 8 will be in 6 fixed bases 7 of damping block.

Be provided with limiting groove on the cushion socket 7, by with damping block 6 cooperate, 6 movement travel of damping block can be limited, Ensure that damping spring 5 is not crushed to death.

The damping block 6 is arranged on cushion socket 7, positions by top connection 1, lower contact 8, cushion socket 7, and intensity is high, resists Impact property is good.It when going into the well, is adjacent in internal surface of sleeve pipe, keeps tubing string placed in the middle.

The damping spring 5 is arranged between damping block 6 and cushion socket 7.Damping spring 5 is high-strength spring, hardness is high, Good toughness has excellent compression strength, fatigue behaviour.Percussion after being able to bear perforation, constantly compression and rebound, branch Support damping block 6 diametrically reciprocates.

4 both ends of central axis are separately connected fixed top connection 1, lower contact 8 by screw thread, and O-ring 2 is added to seal, 3 retaining of limit screw.Design has big orifice hole on central axis, and circulation area is big.It can be arrived with tripping in tool by radial shock absorber Tubing string lower part is tested, or carries out the well control circulation of big flow.

The lower contact 8 is fixed on central axis 4 by threaded connection, passes through the sealing of O-ring 2,3 retaining of limit screw.

The product uses anti-H using sealing element O-ring₂S material, hardness is high, guarantees that rubber will not be bubbled, swell, loses Elasticity is gone, can reliably be sealed in 200 DEG C of high temperature.

The working principle of the utility model is as follows:

The utility model hydraulic radial damper is located at packer lower part, is connected at the oil pipe of 2, priming device top, with Longitudinal hydraulic damper adapted when operation, generates huge energy after perforating gun detonation, generates larger pressure oscillations wave and radial direction Impact force increases tubing string vertical tremor and test section pressure moment.The radial impact force effect after by perforation of hydraulic shock-absorption component, Damping block 6 diametrically reciprocates in cushion socket 7, compression shock absorption spring 5 and well liquid, compresses and opens by damping spring 5, well Liquid constantly aspirates and squeezes out double action, acts on after slowing down perforating gun detonation the radial impact force and pressure oscillations of tubing string.

The present apparatus combination Conventional springs compression, hydraulic shock-absorption working principle, shock-absorbing function is realized by simple structure, Structure is simple, easy to use, and damping is reliable.It can solve pressure oscillations and radial impact after TCP combined well testing perforating gun detonates Influence of the power to test equipment and working string, plays a protective role, can prevent tubing string and test equipment from damaging, improve operation at Power reduces operating cost.Suitable for open well and TCP combined well testing well operations.

Claims (6)

1. a kind of TCP hydraulic radial damper, it is characterised in that: including top connection (1), central axis (4), damping spring (5), subtract Block (6), cushion socket (7) and lower contact (8) are shaken, cushion socket (7), damping block (6) and damping spring (5) form hydraulic shock-absorption cabin, Top connection (1) and lower contact (8) seal the top and bottom for being fixed on central axis (4) respectively, and cushion socket (7) is set in central axis (4) it can be rotated freely on and on central axis (4), more than one piece damping block (6), damping spring have been disposed radially on cushion socket (7) (5) it is arranged between damping block (6) and cushion socket (7).

2. TCP hydraulic radial damper according to claim 1, it is characterised in that: cushion socket (7) both ends lead to respectively It crosses top connection (1) and lower contact (8) is fixed, cushion socket (7) both ends pass through top connection (1) respectively and lower contact (8) is fixed on and subtracts It shakes on seat (7).

3. TCP hydraulic radial damper according to claim 1, it is characterised in that: the top connection (1) and lower contact (8) be connected through a screw thread and be fixed on central axis (4) respectively, the place of being connected and fixed is provided with limit screw (3), top connection (1) and Lower contact (8) and central axis (4) are sealed by O-ring (2) respectively.

4. TCP hydraulic radial damper according to claim 1, it is characterised in that: be provided with 6 on the cushion socket (7) Part damping block (6), every damping block (6) are correspondingly arranged 5 damping springs (5), 360 ° along cushion socket (7) of 6 damping blocks (6) Circumference radial equipartition.

5. TCP hydraulic radial damper according to claim 1, it is characterised in that: be arranged on the cushion socket (7) useful In the limiting groove of limitation damping block (6) movement travel, the gap between damping block (6) and limiting groove is damping block (6) Movement travel.

6. TCP hydraulic radial damper according to claim 1, it is characterised in that: be provided on the central axis (4) Passing hole.