CN204200131U - A kind of rotating hydraulic push type setting tool - Google Patents

Abstract

A kind of rotating hydraulic push type setting tool, discharges elastic claw releasing gadget form by setting sleeve mechanism and hydraulic pressure.Wherein set sleeve mechanism and comprise top connection, inner spindle, the top connection of hydraulic drive sleeve, hydraulic drive sleeve, upper piston, lower piston, by-pass prot, compressive sleeve, intermediate jointing, sealing ring, pin; Hydraulic pressure release elastic claw releasing gadget comprises elastic claw, elastic claw supported joint, shears bolt, lower contact, sealing ring, pin.This instrument can make sleeve pipe in the wellbore lower fashionable can by pushing away, drawing, rotation mode reaches target depth, to reduce the well cementation time.And the separation process of set, giving up is easy, and success rate is high.Be applicable to extended reach well, horizontal well and high angle hole; Tool construction is simple, and difficulty of processing is little, and cost is low and easy to maintenance.

Description

A rotatable hydraulic push type setting tool

technical field

The utility model relates to a rotatable hydraulic push type setting tool in the field of well completion and cementing operation tools.

Background technique

As the development of oil and gas fields enters the middle and late stages, highly deviated wells, horizontal wells and extended-reach wells continue to increase, so the requirements for setting tools are getting higher and higher. The previous setting tools cannot meet the existing construction requirements, and there are a series of problems, such as: the existing setting tools cannot be efficiently used in highly deviated wells, horizontal wells and extended-reach wells; they cannot be rotated when moving in the wellbore , to transmit torque to the liner, making the completion time too long; when the formation pressure is too high, it is easy to damage the tool; the construction process is complicated, the success rate is not high, the cost is high, and the maintenance is inconvenient.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a rotatable hydraulic push-type setting tool that can not only perform rotary motion but also push and pull motions.

The technical scheme that the utility model solves its technical problem adopts is:

A rotatable hydraulic push-type setting tool, which is composed of a setting sleeve mechanism and a hydraulic release elastic claw throwing mechanism, wherein: the setting sleeve mechanism is a hydraulic push sleeve 4 wrapped around the inner mandrel 2, and the hydraulic push sleeve 4 The upper part of the push sleeve 4 is axially slidably matched with the inner mandrel 2, and the middle part of the hydraulic push sleeve 4 forms an annular piston chamber with the inner mandrel 2, and an upper piston 5 and a lower piston 6 are arranged in the annular piston chamber, and the upper piston 5 and the inner mandrel The mandrel 2 is fixedly connected and forms an axial sliding seal fit with the inner wall of the hydraulic push sleeve 4. The upper end of the lower piston 6 is fixedly connected with the lower end of the hydraulic push sleeve 4 and forms an axial slide seal fit with the outer wall of the inner mandrel 2. The lower part of the piston 6 is fixedly connected with the pressure sleeve 8 after the outer diameter is reduced. At the gap between the upper piston 5 and the lower piston 6; the hydraulic release elastic claw throwing mechanism is fixedly connected with the inner mandrel 2 of the setting sleeve mechanism through the intermediate connecting joint 9, and the hydraulic release elastic claw throwing mechanism is in the hydraulic Push the lower end of the upper joint 3 of the sleeve to be fixedly connected to the elastic claw 10, and the elastic claw 10 is connected to the elastic claw support joint 12 through the shear bolt 11. The elastic claw support joint 12 is provided with a ball seat, and the outside is equipped with The annular groove, the inner mandrel 2, the intermediate connection joint 9 and the elastic claw support joint 12 communicate to form an internal circulation pipe column.

The above program also includes:

A pressure relief hole is arranged radially on the hydraulic push sleeve 4 above the upper piston 5; the elastic claw 10 is a clutch spline structure.

The upper end of the inner core shaft 2 and the lower end of the elastic claw support joint 12 are fixedly connected by the upper joint and the lower joint respectively, and the upper end of the hydraulic push sleeve 4 is fixedly connected with the upper joint 3 of the hydraulic push sleeve, and the upper joint 3 of the hydraulic push sleeve is connected with the inner core Shaft 2 forms an axial sliding fit.

Between the upper piston 5 and the inner mandrel 2, the lower piston 6 and the hydraulic push sleeve 4, the inner mandrel 2 and the intermediate connecting joint 9, the intermediate connecting joint 9 and the elastic claw 10, the pin 15 is used to cooperate with the thread and/or The fixed connection method of the sealing ring: the axial sliding mating surfaces of the upper piston 5 and the hydraulic push sleeve 4, the lower piston 6 and the inner mandrel 2, and the elastic claw support joint 12 and the elastic claw 10 are all provided with a sealing ring.

The upper joint 1 and the inner mandrel 2, the lower joint and the elastic claw support joint 12 are also fixedly connected by a pin 15 with a screw thread and/or a sealing ring.

The utility model overcomes the deficiencies in the prior art, and is suitable for the operation of high-inclination wells, horizontal wells and extended-displacement wells; the tool pressurizing sleeve is designed with claw sleeves, which can transmit torque to the tail pipe, so that the tail pipe is When moving in the wellbore, the target depth can be reached not only by pushing and pulling, but also by rotating to reduce the time for running the casing; the tool has an internal circulation string, which can circulate with a large displacement; elastic jaws and clutch Spline design, elastic claw support joint with locking structure, which makes setting stable and high success rate; there is a bypass hole on the inner mandrel, which can effectively realize hydraulic push; It is better not to rotate when using the tool, but the tool can not only rotate but also push and pull, so this tool is especially suitable for horizontal wells and highly deviated wells; the tool has simple structure, low processing difficulty, low cost and Easy to maintain. And the separation process of setting and dropping is simple and convenient, and the success rate is high.

Description of drawings

Figure 1 is a schematic structural view of an embodiment of the utility model.

In the figure: 1. Upper joint, 2. Inner mandrel, 3. Upper joint of hydraulic push sleeve, 4. Hydraulic push sleeve, 5. Upper piston, 6. Lower piston, 7. Bypass hole, 8. Pressurization Sleeve, 9, intermediate connection joint, 10, elastic claw, 11, shear bolt, 12, elastic claw support joint, 13, lower joint sealing ring, 14, sealing ring, 15, pin.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments of the specification.

Referring to accompanying drawing 1, a rotatable hydraulic push type setting tool is composed of a setting sleeve mechanism and a hydraulic release elastic claw throwing mechanism. The setting sleeve mechanism includes an upper joint 1, an inner mandrel 2, an upper joint 3 of a hydraulic push sleeve, a hydraulic push sleeve 4, an upper piston 5, a lower piston 6, a bypass hole 7, a pressurizing sleeve 8, and a middle Body connection joint 9, sealing ring 14, pin 15; hydraulic release elastic claw throwing mechanism includes elastic claw 10, elastic claw support joint 12, shear bolt 11, lower joint 13, sealing ring 14, pin 15. The upper joint 3 of the hydraulic push sleeve, the hydraulic push sleeve 4, the upper piston 5, the lower piston 6 and the pressure sleeve 8 are penetrated outside the inner mandrel 2, and the upper joint 3 of the hydraulic push sleeve and the hydraulic push sleeve 4 pass through Threaded connection, the upper piston 5 is threaded with the inner mandrel 2, and is prevented from rotating by a pin 15. The lower piston 6 is threadedly connected with the hydraulic push sleeve 4 and is prevented from rotating by a pin 15 . The lower piston 6 is threadedly connected with the pressurizing sleeve 8 and is prevented from rotating by a pin 15 . The lower end of the inner mandrel 2 is threadedly connected with an intermediate connecting joint 9 and is prevented from rotating by a pin 15 . The hydraulic pressure release elastic pawl throwing mechanism is connected with the elastic pawl 10 by threads at the lower end of the intermediate connecting joint 9, and is anti-rotated by the pin 15. The inside of the elastic claw 10 is connected 12 with the elastic claw support joint through a shear bolt 11 .

The upper joint 1 in the setting sleeve mechanism is connected with the inner mandrel 2 through threads, and is prevented from rotating by the pin 15, and the lower end of the elastic claw support joint 12 is connected with the lower joint 13 through threads.

Among them, in order to ensure the overall sealing performance of the tool, a sealing ring 14 is installed between the upper joint 1 and the inner mandrel 2, a sealing ring 14 is installed between the upper piston 5 and the inner mandrel 2, and a sealing ring 14 is installed between the upper piston 5 and the hydraulic push sleeve 4. There is a sealing ring 14, a sealing ring 14 is installed between the lower piston 6 and the inner mandrel 2, a sealing ring 14 is installed between the lower piston 6 and the hydraulic push sleeve 4, a sealing ring is installed between the inner mandrel 2 and the intermediate connecting joint 9 Ring 14, a seal ring 14 is installed between the intermediate connection joint 9 and the elastic claw 10, a seal ring 14 is installed between the elastic claw 10 and the elastic claw support joint 12, a seal ring 14 is installed between the elastic claw support joint 12 and the lower joint 13 .

The working principle of the utility model is briefly described through the above-mentioned embodiments.

When running casings in highly deviated wells, horizontal wells, and extended-reach wells, the rotatable hydraulic push-type setting tool is connected to the packer and run into the well. The key drives the packer to rotate and move the drilling tool up and down to break the friction between the pipe string and the well wall. After reaching the setting position, the well is fully washed with a cement truck to achieve the purpose of circulating floating and washing out the deposited debris in the well. The wellhead throws the ball and the cement truck suppresses. The liquid enters the inner mandrel 2 from the upper joint 1, part of the liquid goes down along the internal circulation pipe string of the tool, and part of the liquid enters between the hydraulic push sleeve 4 and the lower piston 6 through the bypass hole 7 on the inner mandrel 2 The annular space between them acts on the lower piston 6, and pushes the lower piston 6 and the pressurized sleeve 8 to move downward under the action of hydraulic pressure. At the same time, the reaction force generated by the water pressure and the pulling force of the oil pipe make the upper joint 1 and the inner mandrel 2 move upward. Under the simultaneous action of these two forces, the tool is set. As the hydraulic pressure continues to increase, the shear bolt 11 will be pulled off, and under the action of the hydraulic pressure, the elastic claw support joint 12 moves downward, so that the end of the elastic claw 10 slides to the retractable position by the step on the elastic claw support joint 12. At the annular groove of the diameter, the originally stretched elastic claws 10 shrink to realize the separation of throwing away. And the pressurizing sleeve 8 is designed as a clutch spline, which can transmit torque downward, so that the tool can reach the target depth faster.

Claims (5)

1. a rotating hydraulic push type setting tool, discharge elastic claw releasing gadget form by setting sleeve mechanism and hydraulic pressure, it is characterized in that: setting sleeve mechanism is be filled with hydraulic drive sleeve (4) at inner spindle (2) overcoat, hydraulic drive sleeve (4) top and inner spindle (2) axial sliding fit, hydraulic drive sleeve (4) middle part forms annular piston chamber with inner spindle (2), upper piston (5) and lower piston (6) is provided with in annular piston chamber, upper piston (5) and inner spindle (2) are connected and are formed to slide axially with hydraulic drive sleeve (4) inwall and be sealed and matched, lower piston (6) upper end and hydraulic drive sleeve (4) bottom are connected and are formed to slide axially with inner spindle (2) outer wall and be sealed and matched, be connected with compressive sleeve (8) after undergauge outside lower piston (6) bottom, compressive sleeve (8) bottom is with blade tooth, inner spindle (2) is provided with radially-arranged by-pass prot (7), by-pass prot (7) correspondence gap location between upper piston (5) and lower piston (6), hydraulic pressure release elastic claw releasing gadget is connected by intermediate jointing (9) and the inner spindle (2) setting sleeve mechanism, hydraulic pressure release elastic claw releasing gadget is the elastic claw (10) that is connected in hydraulic drive sleeve top connection (3) bottom, elastic claw supported joint (12) is connected by shearing bolt (11) in elastic claw (10), elastic claw supported joint is provided with ball seat in (12), outside is provided with the cannelure coordinated with elastic claw (10), inner spindle (2), intermediate jointing (9) is communicated with formation inner loop tubing string with elastic claw supported joint (12).

2. rotating hydraulic push type setting tool according to claim 1, is characterized in that: be provided with relief hole in the upper radial direction of the hydraulic drive sleeve (4) of upper piston (5) top; Elastic claw (10) is clutch spline structure.

3. rotating hydraulic push type setting tool according to claim 1 and 2, it is characterized in that: inner spindle (2) upper end and elastic claw supported joint (12) lower end are connected by top connection and lower contact respectively, hydraulic drive sleeve (4) upper end is connected hydraulic drive sleeve top connection (3), and forms axial sliding fit by hydraulic drive sleeve top connection (3) and inner spindle (2).

4. rotating hydraulic push type setting tool according to claim 1 and 2, is characterized in that: upper piston (5) and inner spindle (2), lower piston (6) and hydraulic drive sleeve (4), inner spindle (2) and intermediate jointing (9), all adopt the attachment of pin (15) matching thread and/or sealing ring between intermediate jointing (9) and elastic claw (10); Upper piston (5) and hydraulic drive sleeve (4), lower piston (6) and inner spindle (2), elastic claw supported joint (12) and the axial sliding fit face of elastic claw (10) are equipped with sealing ring.

5. rotating hydraulic push type setting tool according to claim 3, is characterized in that: top connection (1) and inner spindle (2) adopt the attachment of pin (15) matching thread and/or sealing ring.