Novel lengthened ball seat

Abstract

The utility model discloses a novel lengthened ball seat which comprises a lengthened ball seat body and a sleeve, a plug core is arranged on one side of the interior of the lengthened ball seat body in an inserted mode, and a second O-shaped ring and a first full-length conical groove pin which are attached to the lengthened ball seat body are arranged on the side, close to the lengthened ball seat body, of the exterior of the plug core in a sleeved mode. A plurality of sets of first full-length conical groove pins and second full-length conical groove pins are inserted into the edge, close to one side of the lengthened ball seat, of the outer portion of the plug core. By means of the lengthening structural design of the lengthening ball seat, the number of oil pipes can be reduced, the lengthening ball seat can be directly inserted into the screen pipe to be connected and used, the utilization rate of the ball seat in the later period is increased, meanwhile, by means of the lengthening design of the lengthening ball seat, the setting function of the packer in the later period can be achieved, and meanwhile the lengthening ball seat can replace the oil pipes to conduct gas injection; meanwhile, the inner diameter of the lengthened ball seat is expanded by 12.65 mm compared with that of a traditional oil pipe, the gas injection displacement in the later period is increased, the flow area is 6172 mm < 2 >, and the flow rate is improved by 36% compared with that of an original technical condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield downhole packer setting tool field, concretely to a novel lengthened ball seat. BACKGROUND

[0002] In the oil and gas exploitation industry, the completion string needs to be installed, and the important packer equipment in the completion string is usually set by the way of tubing pressurization, and the tubing needs to be blocked to pressurize, and the usual method is to install a working barrel at the lower part, and a single flow valve is lowered by a wire tool to block the bottom of the tubing, and the single flow valve is fished out after the packer is set to leave an oil and gas passage, so a novel lengthened ball seat needs to be designed.

[0003] Under the technical conditions of the existing gas storage well, the working string is usually composed of a packer main body, a string, a conventional ball seat and a tubing (as shown in the accompanying drawings), the screen pipe has an outer diameter of 127mm, the tubing has an outer diameter of 88.9mm and an inner diameter of 76mm, the tubing is inserted into the 127mm screen pipe in the working mode, the minimum inner diameter of the string is 76mm, and the injection displacement is limited by the 76mm inner diameter. Figure 5 The ball seat designed in the structure affects the late gas injection displacement and injection efficiency of the packer. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a novel lengthened ball seat, and the inner diameter of the gas injection string has a great influence on the gas injection rate in the gas injection process of the gas storage well, the utility model is a tool for lengthening and expanding the inner diameter of the string, and the injection displacement of the gas and the injection efficiency can be improved.

[0005] To achieve the above object, a novel lengthened ball seat is provided, which comprises a lengthened ball seat and a sleeve, a plugging core is inserted into one side of the lengthened ball seat, O-rings two and full-length taper slot pins one are respectively sleeved on one side of the plugging core close to the lengthened ball seat, a plurality of full-length taper slot pins one and full-length taper slot pins two are respectively inserted into the edge of one side of the plugging core close to the lengthened ball seat, and the full-length taper slot pins one and the full-length taper slot pins two extend to the outside of the lengthened ball seat.

[0006] According to the novel lengthened ball seat, the bottom of the sleeve is connected with a screen pipe, the inner top of the sleeve is provided with a packer, the bottom of the packer is buckled with a conventional ball seat, and the bottom of the conventional ball seat is connected with a tubing extending into the screen pipe.

[0007] According to the novel lengthened ball seat, the edge of one side of the lengthened ball seat close to the plugging core and the middle position of the outer side of the plugging core are both uniformly provided with through holes, and the through holes are matched with the full-length taper slot pins one and the full-length taper slot pins two respectively.

[0008] According to the new type of lengthening ball seat, two groups of annular grooves are formed on the side of the plug core close to the lengthening ball seat, and O-ring two and O-ring one are respectively embedded in the inner part of the two groups of annular grooves.

[0009] According to the new type of lengthening ball seat, the maximum outer diameter of the lengthening ball seat is 125.73mm, the inner diameter is 88.65mm, the length is 1000mm, the maximum outer diameter of the plug core is 96.901mm, and the length is 215.90mm.

[0010] Compared with the prior art, the beneficial effects of the utility model are that: through the lengthening structure design of the lengthening ball seat, the increase of the oil pipe can be reduced, the lengthening ball seat can be directly inserted into the inside of the screen pipe for connection and use, the utilization rate of the ball seat in the later period is improved, and through the lengthening design of the lengthening ball seat, the seat sealing function with the packer in the later period can be completed, and the oil pipe can also be replaced for gas injection, and the lengthening ball seat designed in the structure design is expanded by 12.65mm compared with the inner diameter of the traditional oil pipe, the injection displacement in the later period is increased, and the flow area is 6172mm 2 , and the flow is increased by 36% compared with the original technical condition;

[0011] Finally, the shear pressure of the ball seat design can be conveniently adjusted through the structure design of the full-length taper groove pin one and the full-length taper groove pin two, and the shear pressure can be adjusted by increasing or reducing the full-length taper groove pin two and the full-length taper groove pin one, and the maximum shear pressure is 33MPa.

[0012] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further explained in combination with the drawings and examples;

[0014] Figure 1 It is the front view of the utility model a new type lengthening ball seat;

[0015] Figure 2 It is the front view of the packer body of the utility model a new type lengthening ball seat;

[0016] Figure 3 It is the front view of the plug core of the utility model a new type lengthening ball seat;

[0017] Figure 4 It is the improvement schematic drawing of the utility model a new type lengthening ball seat;

[0018] Figure 5 It is the original technical schematic drawing of the utility model a new type lengthening ball seat.

[0019] Figure: 1, lengthened ball seat; 2, plug core; 3, O-ring 1; 4, O-ring 2; 5, full-length taper slot pin 1; 6, full-length taper slot pin 2; 7, packer; 8, casing; 9, ordinary ball seat; 10, oil pipe; 11, screen pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-5 , the utility model embodiment provides a kind of technical scheme: a kind of novel lengthened ball seat, including lengthened ball seat 1 and casing 8, lengthened ball seat 1 inside one side inserts and is equipped with plug core 2, plug core 2 outside close to the side of lengthened ball seat 1 is respectively equipped with with lengthened ball seat 1 O-ring 2 4 and full-length taper slot pin 1 5 and is pasted, plug core 2 outside close to the side of lengthened ball seat 1 edge is respectively inserted with multiple full-length taper slot pin 1 5 and full-length taper slot pin 2 6, and full-length taper slot pin 1 5 and full-length taper slot pin 2 6 extend to the outside of lengthened ball seat 1, using the lengthened design of lengthened ball seat 1, can make lengthened ball seat 1 directly enter and exit to screen pipe 11 inside about 0.9m position, as shown in the figure, Figure 4 , and the improved lengthened ball seat 1 inner diameter is 88.65mm, this improved inner diameter increases 12.65mm, flow area is 6172mm 2 , flow is increased by 36% compared with original technical condition, the improved packer reduces a section of oil pipe by the design of lengthening and increasing the inner diameter size of lengthened ball seat 1, improves the utilization of ball seat, can complete the setting function of packer and also can replace oil pipe to carry out gas injection, and improves the flow of gas injection.

[0022] The bottom of casing 8 is connected with screen pipe 11, the inner top of casing 8 is provided with packer 7, the bottom of the outer side of packer 7 is buckled with ordinary ball seat 9, and the bottom of ordinary ball seat 9 is connected with oil pipe 10 extending into screen pipe 11, which is the original technical condition, and through the conventional design of ordinary ball seat 9, oil pipe 10 needs to be connected in use, so that oil pipe 10 is inserted into the inside of screen pipe 11, as shown in the figure, Figure 5 , under this technical condition, additional oil pipe 10 needs to be connected, and the inner diameter of oil pipe 10 is 76mm, and the flow area is 4536mm 2 , the gas injection displacement of the packer under the original technical condition is small, and the efficiency is low.

[0023] The through hole is uniformly arranged at the edge of the outer side of the lengthened ball seat 1 close to the plug core 2 and the middle position of the outer side of the plug core 2, and the through hole is matched with the full-length taper slot pin one 5 and the full-length taper slot pin two 6 respectively, the through hole is designed to facilitate the insertion and connection of the full-length taper slot pin one 5 and the full-length taper slot pin two 6, so as to facilitate the shear pressure of the packer in the later period, and the maximum shear pressure is 33MPa, two groups of annular grooves are arranged on the outer side of the plug core 2 close to the lengthened ball seat 1, and the inner part of the two groups of annular grooves is respectively embedded with O-ring two 4 and O-ring one 3, the annular groove is designed to facilitate the embedding and installation function of the O-ring two 4 and the O-ring one 3, so as to facilitate the sealing performance of the connection between the plug core 2 and the lengthened ball seat 1 in the later period, the maximum outer diameter of the lengthened ball seat 1 is 125.73mm, the inner diameter is 88.65mm, and the length is 1000mm, and the maximum outer diameter of the plug core 2 is 96.901mm, and the length is 215.90mm, through the design of the parameters, the accuracy of the production of the lengthened ball seat 1 and the components above it in the later period can be ensured, and the problems of exhaust displacement and gas injection efficiency are clarified, and the side of the lengthened ball seat 1 away from the plug core 2 is provided with a special buckle, and the special buckle is connected with the lower end of the packer 7, and the design of the special buckle can facilitate the buckling connection function of the lengthened ball seat 1 and the packer 7.

[0024] Working principle: when in use, the operator can directly take the lengthened ball seat 1 and the components above it, connect the special buckle designed at the end of the lengthened ball seat 1 away from the plug core 2 with the lower end of the packer 7, insert the lengthened ball seat 1 into the inside of the screen pipe 11 about 0.9m after connection, complete the setting pressure of the upper end of the lengthened ball seat 1 and the packer 7 after pipe string connection, continue to press to the designed shear pressure of the ball seat, so that the plug core 2 can fall off, and then realize the communication of the lengthened ball seat 1 and the screen pipe 11, and then the gas injection can be carried out.

[0025] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A novel extended ball seat, comprising an extended ball seat (1) and a sleeve (8), characterized in that: A plugging core (2) is inserted into one side of the interior of the extended ball seat (1), and an O-ring (4) and a full-length taper groove pin (5) that fit the extended ball seat (1) are respectively sleeved on the side of the exterior of the plugging core (2) close to the extended ball seat (1), and multiple groups of full-length taper groove pins (5) and full-length taper groove pins (6) are respectively inserted into the edge of the exterior of the plugging core (2) close to the side of the extended ball seat (1), and the full-length taper groove pins (5) and full-length taper groove pins (6) extend to the outside of the extended ball seat (1).

2. A novel extended ball seat according to claim 1, characterized in that: The bottom of the casing (8) is connected to a screen tube (11), the inner top of the casing (8) is installed with a packer (7), the bottom of the outer side of the packer (7) is buckled with a common ball seat (9), and the bottom of the common ball seat (9) is connected to an oil pipe (10) extending to the inside of the screen tube (11).

3. A novel extended ball seat as claimed in claim 1, characterized in that: Through holes are evenly formed at the edge of the outer side of the extended ball seat (1) close to the plug core (2) and at the middle position of the outer side of the plug core (2), and the through holes are respectively matched with the full-length tapered groove pin 1 (5) and the full-length tapered groove pin 2 (6).

4. A novel extended ball seat as claimed in claim 1, characterized in that: Two groups of annular grooves are provided on the outside of the plug core (2) near the extended ball seat (1), and the insides of the two groups of annular grooves are respectively embedded with an O-ring 2 (4) and an O-ring 1 (3).

5. A novel extended ball seat as claimed in claim 1, characterized in that: The maximum outer diameter of the extended ball seat (1) is 125.73 mm, the inner diameter is 88.65 mm, and the length is 1000 mm, while the maximum outer diameter of the plugging core (2) is 96.901 mm and the length is 215.90 mm.

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