CN220687298U - Horizontal well cylinder Shan Jiaotong throttle - Google Patents

Abstract

The utility model discloses a horizontal well cylinder Shan Jiaotong throttler, and relates to the field of throttlers. The choke is accurately arranged at the setting position to realize setting, so that the choke can be salvaged smoothly, the performance is more stable, and the use is very convenient.

Description

Horizontal well cylinder Shan Jiaotong throttle

Technical Field

The utility model relates to the field of throttlers, in particular to a horizontal well cylinder Shan Jiaotong throttler.

Background

In natural gas exploitation, for depressurization, throttling and production limiting, downhole throttlers are often installed in a gas well shaft, and the downhole throttlers are divided into slip type downhole throttlers and preset downhole throttlers in different seat sealing modes. The well choke is a novel slip type well choke disclosed in patent document with publication number of CN105840154B, and can generate error setting when meeting slight blockage in the process of well application and release, and the choke can be set in advance before reaching a design setting position. When in salvage, the axial distance of the rubber cylinder cannot be increased, and the sealing rubber cylinder cannot retract, so that the salvage lifting friction resistance is large and the salvage difficulty is high. The choke is blocked in the oil pipe once the fishing fails, so that drainage and gas production measures of subsequent recovery cannot be implemented, and the productivity of a gas well cannot be exerted finally.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the single rubber cylinder restrictor for the horizontal well cylinder, which can accurately realize setting at the setting position, can be used for salvaging the restrictor more smoothly, and is more stable in performance and very convenient to use.

The technical scheme adopted for solving the technical problems is as follows: a horizontal well cylinder Shan Jiaotong choke comprising:

salvaging mechanism: the device is used for being connected with a wire tool string;

an anchoring mechanism: for connection with tubing couplings;

sealing mechanism: for forming a seal with the peripheral space;

setting mechanism: the device is used for setting and butting the throttles;

sand prevention mechanism: is used for sand prevention and filtration.

Preferably, the fishing mechanism comprises a fishing ring and a core rod.

Preferably, the lower end of the delivery head is spliced with the upper end of the core rod, the upper end of the core rod is sleeved with the fishing ring, and the pin penetrates through the fishing ring, the core rod and the delivery head.

Preferably, the sealing mechanism comprises a fixed rod, a deblocking shaft, a check ring, deblocking claws, a baffle ring, a connecting sleeve, a central tube, a rubber cylinder, a piston and an air cylinder.

Preferably, the fixing rod and the piston are respectively sleeved on the central tube in a front-back mode, the deblocking shaft and the check ring are sleeved on the front section of the fixing rod in a sleeved mode, the end cover is sleeved on the rear section of the fixing rod and the piston in a sleeved mode, the deblocking claw is arranged between the fixing rods on the end cover, the baffle ring and the rubber cylinder are arranged on the periphery of the piston, and the piston is in sliding fit in the cylinder; the check ring is connected with the baffle ring through the connecting sleeve.

Preferably, the setting mechanism comprises a locating ring, an end cover, a collet, a hanging spring, a setting sleeve, a transition pipe and a steel ball.

The end cover is connected with the rear end of the central tube in a clamping mode through a locating ring, the collet is fixed on the outer portion of the end cover, a hanging spring is arranged at the tail end of the collet, a transition tube is arranged outside the seat cover, the fixing rod is connected in the seat cover in a butt joint mode, the steel balls are arranged on the fixing rod, and a ring groove for the steel balls to be clamped is formed in the connecting sleeve.

Preferably, the sand control mechanism comprises a gasket, an air tap, a pressure cap and a sand control pipe.

Preferably, the gasket, the air tap and the pressure cap are arranged in the rear end of the central tube, and the sand control tube is sleeved outside the rear end of the central tube.

The utility model has the beneficial effects that:

by adopting the technical scheme, the throttle can be accurately set at the setting position, so that the throttle can be salvaged smoothly, the performance is more stable, and the use is very convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly described, and it is obvious that the drawings in the following description are only three of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the front section of an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a middle section of an embodiment of the present utility model;

FIG. 3 is a schematic view of the rear section of an embodiment of the present utility model;

1, a salvaging ring; 2. a core bar; 3. a positioning ring; 4. an end cap; 5. a collet; 6. a hanging spring; 7. a seat cover; 8. a transition pipe; 9. a steel ball; 10. a fixed rod; 11. deblocking the shaft; 12. a retainer ring; 13. deblocking claws; 14. connecting sleeves; 15. a baffle ring; 16. a central tube; 17. a rubber cylinder; 18. a piston; 19. a cylinder; 20. a gasket; 21. an air tap; 22. pressing the cap; 23. sand prevention pipe.

Detailed Description

The present utility model will be further described in detail with reference to the drawings and examples, which are only for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Examples

As shown in fig. 1, a horizontal well cylinder Shan Jiaotong choke comprises: salvaging mechanism: the device is used for being connected with a wire tool string; an anchoring mechanism: for connection with tubing couplings; sealing mechanism: for forming a seal with the peripheral space; setting mechanism: the device is used for setting and butting the throttles; sand prevention mechanism: is used for sand prevention and filtration.

The fishing mechanism comprises a fishing ring 1 and a core rod 2. The lower end of the delivery head is spliced with the upper end of the core rod 2, the upper end of the core rod 2 is sleeved with the fishing ring 1, and the pin penetrates through the fishing ring 1, the core rod 2 and the delivery head.

The sealing mechanism comprises a fixed rod 10, an unsealing shaft 11, a retainer ring 12, unsealing claws 13, a baffle ring 15, a connecting sleeve 14, a central tube 16, a rubber cylinder 17, a piston 18 and a cylinder 19. The fixed rod 10 and the piston 18 are respectively sleeved on the central tube 16 in a front-back mode, the deblocking shaft 11 and the check ring 12 are sleeved on the front section of the fixed rod 10, the end cover 4 is sleeved on the rear section of the fixed rod 10 and the piston 18, the deblocking claw 13 is arranged between the fixed rods 10 on the end cover 4, the baffle ring 15 and the rubber cylinder 17 are arranged on the periphery of the piston 18, and the piston 18 is in sliding fit in the cylinder 19; the connecting sleeve 14 connects the retainer ring 12 and the retainer ring 15.

The setting mechanism comprises a positioning ring 3, an end cover 4, a collet 5, a hanging spring 6, a setting sleeve 7, a transition pipe 8 and a steel ball 9. The end cover 4 is clamped with the rear end of the central tube 16 through a positioning ring 3, the collet 5 is fixed outside the end cover 4, a hanging spring 6 is arranged at the tail end of the collet 5, a transition tube 8 is arranged outside the seat cover 7, the fixing rod 10 is in butt joint in the seat cover 7, the fixing rod 10 is provided with steel balls, and a connecting sleeve 14 is provided with a ring groove for the steel balls to clamp.

The sand control mechanism comprises a gasket 20, an air tap 21, a pressure cap 22 and a sand control pipe 23. The gasket 20, the air tap 21 and the pressure cap 22 are arranged inside the rear end of the central tube 16, and the sand control tube 23 is sleeved outside the rear end of the central tube 16.

The structure mainly comprises a throwing/salvaging mechanism, an anchoring mechanism, a sealing mechanism, a setting mechanism, a sand prevention mechanism and the like. After the steel wire tool string is lowered to a preset position, the two steel wires are mutually crossed and overlapped to be released after the positioning clamp spring at the claw of the outer sleeve is blocked in the clearance groove of the oil pipe coupling, and the claw is released and is in a free state capable of radially contracting. And continuously hammering the steel wire tool string, enabling the core shaft of the restrictor to descend to a proper position relative to the clamping jaws, enabling the clamping jaws to lose radial contraction capability under the support of the core shaft, anchoring the clamping jaws in a gap groove of the tubing coupling, and enabling the anchoring and setting of the restrictor to be successful.

When the fishing is needed, the steel wire tool string is put down in the well, the fishing tool catches the fishing neck of the throttle, then the steel wire tool string is hit, the mandrel moves upwards relative to other parts of the throttle, the claw loses the central support of the mandrel and becomes a free state capable of radially shrinking again, and the claw can move in the direction of the wellhead unidirectionally. Because the friction force between the sealing rubber cylinder 17 and the oil pipe is huge, the sheath, the spring, the connecting section, the transition section and the connecting sleeve 14 are driven to move upwards relative to the connector and the sealing rubber cylinder 17 along with the upward movement of the mandrel, meanwhile, the unsealing shear pin is sheared, the axial distance of the radially expanded sealing rubber cylinder 17 is increased, the sealing rubber cylinder 17 is retracted, the contact force with the oil pipe is relieved, and the throttle is successfully salvaged.

The scheme is matched with a steel wire operation tool for application, the steel wire operation is completed, the well is sealed at any tubing coupling position in the well, the fluid throttling of the well shaft is realized, the scheme is mainly used for gas well production, the gas well hydrate generation throttler is reduced to accurately realize sealing at the sealing position, the throttler can be salvaged more smoothly, the performance is more stable, and the use is very convenient.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (1)

1. A horizontal well cylinder Shan Jiaotong restrictor comprising:

salvaging mechanism: the fishing mechanism is used for being connected with the steel wire tool string and comprises a fishing ring (1) and a core rod (2);

an anchoring mechanism: the oil pipe coupling is used for being connected with an oil pipe coupling, the lower end of a delivery head is spliced with the upper end of a core rod (2), the upper end of the core rod (2) is sleeved with the fishing ring (1), and a pin penetrates through the fishing ring (1), the core rod (2) and the delivery head;

sealing mechanism: the sealing mechanism is used for forming sealing with a peripheral space and comprises a fixed rod (10), a deblocking shaft (11), a retainer ring (12), deblocking claws (13), a baffle ring (15), a connecting sleeve (14), a central tube (16), a rubber cylinder (17), a piston (18) and a cylinder (19), wherein the fixed rod (10) and the piston (18) are sleeved on the central tube (16) in a front-back mode respectively, the deblocking shaft (11) and the retainer ring (12) are sleeved on the front section of the fixed rod (10), an end cover (4) is sleeved on the rear section of the fixed rod (10) and the piston (18) in a sleeved mode, the deblocking claws (13) are arranged between the fixed rod (10), the baffle ring (15) and the rubber cylinder (17) are arranged on the periphery of the piston (18), and the piston (18) is in a sliding fit mode in the cylinder (19); the retainer ring (12) is connected with the baffle ring (15) through the connecting sleeve (14);

setting mechanism: the sealing mechanism comprises a positioning ring (3), an end cover (4), a collet (5), a hanging spring (6), a sealing sleeve (7), a transition pipe (8) and a steel ball (9);

the end cover (4) is clamped with the rear end of the central tube (16) through a positioning ring (3), the collet (5) is fixed outside the end cover (4), a hanging spring (6) is arranged at the tail end of the collet (5), a transition tube (8) is arranged outside the seat cover (7), the fixing rod (10) is abutted in the seat cover (7), steel balls are arranged on the fixing rod (10), and a ring groove for the steel balls to clamp is arranged on the connecting sleeve (14);

sand prevention mechanism: the sand control mechanism comprises a gasket (20), an air tap (21), a pressure cap (22) and a sand control pipe (23); the gasket (20), the air tap (21) and the pressure cap (22) are arranged in the rear end of the central tube (16), and the sand prevention tube (23) is sleeved outside the rear end of the central tube (16).