CN213016290U - Bridge plug pressure operation tool - Google Patents

Abstract

The utility model discloses a bridging plug area presses operation tool, it includes: the body, take the case under pressure, valve ball, pin, lower clutch, corresponding sealing washer, stopping pin, can extensively be used for taking the construction of taking the bridge plug under pressure, and the transmission tubular column links to each other, connects on bridge plug upper portion. The utility model discloses when realizing taking the pressure operation, convert the bridging plug bowling action into the armed state, bore the unexpected start seat seal of exciting because of hydraulic midway when avoiding the direct bowling of bridging plug under. When the bridge plug needs ball throwing to realize hydraulic setting, internal pressure is added from a wellhead oil pipe, the valve core with pressure is pushed down to be communicated with the flow passage, and meanwhile, ball throwing action is completed, so that the bridge plug is pressed to realize setting releasing.

Description

Bridge plug pressure operation tool

Technical Field

The utility model discloses when realizing taking the pressure operation, convert the bridging plug bowling action into the armed state, bore the unexpected start seat seal of exciting because of hydraulic midway when avoiding the direct bowling of bridging plug under. When the bridge plug needs ball throwing to realize hydraulic setting, internal pressure is added from a wellhead oil pipe, the valve core with pressure is pushed down to be communicated with the flow passage, and meanwhile, ball throwing action is completed, so that the bridge plug is pressed to realize setting releasing.

Background

In the bridge plug construction under the operation of area pressure at present, adopt direct pre-throwing bridge plug supporting steel ball income ball seat usually, then connect the anti-check valve of adorning in bridge plug upper portion tubular column and realize the operation of area pressure, this operation mode has following problem: 1. the ball-throwing seat sealing can not be realized because the upper part of the bridge plug is connected with the inverted ball seat; 2. because steel balls are thrown into the seats in advance, the bridge plug is easy to accidentally start setting in the drilling process due to hydraulic excitation, and construction operation fails; 3. the reverse check valve is not in line with the operating specification of the pressurized operation.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks of the prior art, the present invention provides a tool with a bridge plug pressure for overcoming the above-mentioned drawbacks.

The technical scheme (as figure 1) of the utility model is that: the valve ball 3 is placed in the valve core 2 with pressure, pin holes in the upper portions of the valve core 2 with pressure and the lower connector 5 with pressure are aligned, the valve core 2 with pressure and the lower connector 5 are connected through the pin 4, the valve ball 3 is limited in the valve core 2 with pressure through the pin 4, the valve ball 3 is in a standby state, the assembly is penetrated into the body 1 from bottom to top, the lower portion of the body 1 is in threaded connection with the upper portion of the lower connector 5 and is tightly buckled until an outer step of the valve core 2 with pressure is contacted with an inner step of the body 1, then the anti-return pin 7 is installed on the body 1, an inner thread in the upper portion of the body 1 is connected with an oil pipe, and an outer thread in the lower portion.

On the basis of the technical scheme, the method further comprises the following technical scheme:

the external step of the pressurized valve core 2 is abutted against the internal step of the body 1, so that the pressurized valve core can bear high lower high pressure and cannot cause fatigue damage to the pin.

And bypass holes are formed in the connecting parts of the pressurized valve core 2 and the lower connector 5, and when the pressurized valve core 2 bears the high-pressure shear 4 and moves downwards, the flow passage is rapidly unblocked.

The valve ball 3 can change the size according to the bridge plug setting needs to satisfy the setting needs of different specification bridge plugs.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the requirement of under-pressure operation is met, and the dual purposes of setting the bridge plug by throwing the ball backwards can be realized; 2. the construction failure caused by the fact that seat sealing is accidentally started midway due to hydraulic excitation when the bridge plug is pressed down under pressure in construction operation is avoided; 3. simple structure, and easy repair of the tool after the tool is lifted out of the ground.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. one and fig. two are schematic sectional views of the present invention;

Detailed Description

Example (b): referring to fig. 1, the present invention provides a specific embodiment of a tool with pressure for a bridge plug: the method comprises the steps of selecting a proper valve ball 3 to be placed inside a pressure valve core 2, aligning pin holes in the upper portions of the pressure valve core 2 and a lower connector 5, connecting the pressure valve core 2 and the lower connector 5 through a pin 4, limiting the valve ball 3 inside the pressure valve core 2 through the pin 4, enabling the valve ball 3 to be in a standby state, penetrating the assembly into a body 1 from bottom to top, connecting the lower portion of the body 1 with the upper portion of the lower connector 5 through threads, tightly buckling the assembly until an outer step of the pressure valve core 2 is contacted with an inner step of the body 1, installing a non-return pin 7 on the body 1, connecting an inner thread in the upper portion of the body 1 with an oil pipe, and connecting an outer thread in the lower portion of the lower connector 5.

The operating principle under pressure is as follows: as shown in fig. 1: the pin 4 extends into the central channel of the lower joint 5 inwards to suspend the valve ball top support, so that the bridge plug cannot establish internal and external pressure difference even if the bridge plug is rapidly drilled, and the bridge plug is not easy to be accidentally started in the midway of drilling; during the operation of taking the pressure, take the pressure case 4 to receive the high pressure of lower part to push up and hold in the palm the effect and upwards lean on the interior step of body 1, therefore take the pressure case to bear very high lower part high pressure (sleeve pipe pressure), and can not damage pin 4.

Pressing and setting principle: as shown in fig. 2: pressurizing in a wellhead oil pipe, when the forward pressure difference (the difference value between the oil pipe pressure and the casing pipe pressure) exceeds the outside shearing strength of the pin 4, pushing the pressurized valve core 2 to move downwards, shearing the outside of the pin 4, disconnecting the pressurized valve core 2 from the lower connector 5, continuously moving the pressurized valve core 2 downwards, pushing the valve ball 3 in the pressurized valve core inner cavity to shear the extension end inside the pin 4, extruding the valve ball 3 into the ball seat of the bridge plug, and simultaneously communicating an upper liquid path and a lower liquid path, wherein the pressurized operation mission of the utility model is completed, and the function evolves to a common overflowing oil pipe nipple; the hydraulic setting operation can be implemented to the bridge plug by continuing to suppress, and the detailed mechanical action is irrelevant to the functions of the utility model and is not repeated herein.

The shape of the rubber seal 6, stopping pin 7 of operation tool is pressed in the bridging plug area the utility model discloses a size, processing mode are not in the protection scope of this patent, do not give unnecessary details.

The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All equivalent changes or modifications made according to the spirit of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Related terms:

1. setting: process for switching packer-like tool from standby state to working state

2. Pressure bearing: abbreviation for object resisting high pressure

3. Pressure: the pressure referred to in this patent application refers to the common name of physical pressure in the industry, not the name of physical pressure

4. Operation under pressure: operation mode of blocking direct communication between oil pipe and casing pipe and making oil pipe pressure obviously lower than casing pipe pressure

5. Hydraulic activation: the internal pressure fluctuates sharply in a short time when the flow rate of the liquid increases and decreases rapidly.

Claims (1)

1. The utility model provides a tool is pressed in bridge plug area which characterized in that: it includes: the valve comprises a body (1), a pressurized valve core (2), a valve ball (3), a pin (4), a lower joint (5), a corresponding sealing ring (6) and a backstop pin (7);

the valve core (2) with pressure is limited by the step and the inner step of the body (1) to bear the high pressure at the lower part;

bypass holes are formed in the joints of the valve core (2) with pressure and the lower connector (5), and after the pin (4) is sheared by hydraulic force, the bypass holes of the valve core (2) with pressure and the lower connector (5) with pressure are converted into an overflowing channel;

the valve ball (3) is placed inside the pressurized valve core (2), pin holes in the upper portions of the pressurized valve core (2) and the pressurized lower connector (5) are aligned, the pressurized valve core (2) and the pressurized lower connector (5) are connected through the pin (4), the valve ball (3) is limited inside the pressurized valve core (2) through the pin (4), the assembly penetrates into the body (1) from bottom to top, the lower portion of the body (1) is in threaded connection with the upper portion of the lower connector (5), the valve ball is tightly buckled to be in contact with an external step of the pressurized valve core (2) and an internal step of the body (1), the anti-retreat pin (7) is installed on the body (1), an internal thread in the upper portion of the body (1) is connected with an oil pipe, and an external thread in the lower portion of the lower connector (5.

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