CN222414798U - Deep hole fracturing sealer - Google Patents

Abstract

The utility model discloses a deep hole fracturing hole packer, which is characterized in that the left side and the right side of a middle connecting pipe are respectively connected with an expansion pipe, the inside of each expansion pipe is provided with an inner sliding rod, the two expansion pipes can be contracted and expanded on the inner sliding rods respectively, at least one of the expansion pipe and the middle connecting pipe is provided with a guide head, the diameter of the guide head is larger than the diameter of any part of the deep hole fracturing hole packer, when the deep hole fracturing hole packer is used for probing into a deep hole, the guide head is used for realizing the extension guide of the whole deep hole fracturing hole packer, and the expansion pipe and the inner wall of the deep hole can be prevented from being scratched to cause blockage due to the maximum diameter of the guide head, and the deep hole fracturing hole packer can be used in cooperation with a through hole in the middle connecting pipe and a one-way pressure valve, so that a deep hole with the depth of more than 200 meters can be effectively fractured.

Description

Deep hole fracturing hole packer

Technical Field

The utility model belongs to the technical field of mining accessories, and particularly relates to a deep hole fracturing hole packer.

Background

In the existing mining accessories, the traditional mode for roadway extension is realized by blasting, but in the field of mining of coal mines or other fuel ores, a great amount of flammable and explosive gases are rich in underground ores, and the gases easily cause safety accidents in the blasting environment.

The present inventors have developed a kind of fracturing hole packer based on the existing fracturing device, when this kind of fracturing hole packer is used, it inserts its entirety into prefabricated hole, realizes the fracturing to the mineral in the hole through high-pressure liquid, its theory of operation is that set up two expansion pipes in middle part connecting pipe both ends, realize the expansion pipe and expand and seal after realizing that two expansion pipes realize high-pressure and expand and split, and then realize fracturing operation, but above-mentioned operation mode is through expansion pipe and pore wall friction directly, when inserting into the hole, can't get into deeper hole because of frictional resistance, so the fracturing hole packer of this kind of structure is only suitable for the shallow hole within 200 and uses.

Aiming at the current actual demands, development and design of a fracturing hole packer suitable for deep hole operation are very needed on the basis of a shallow hole packer so as to overcome the defects in the prior art.

Disclosure of utility model

The utility model aims to provide a deep hole fracturing hole packer, which can realize mineral fracturing operation in a deep hole operation environment by referring to the working principle of shallow hole expansion fracturing at present.

In order to achieve the aim, the deep hole fracturing hole packer comprises a middle connecting pipe, wherein the left side and the right side of the middle connecting pipe are respectively connected with an expansion pipe, the inside of each expansion pipe is provided with an inner slide rod, each inner slide rod is provided with a liquid seepage hole, and each expansion pipe can be contracted and expanded on each inner slide rod;

One of the two expansion pipes is closed at the end part, the other expansion pipe is provided with an external connecting end, a through hole is formed in the middle connecting pipe to realize the intercommunication between the two expansion pipes, a one-way pressure valve is arranged in the middle connecting pipe, and an external through hole is formed in a communicating part of the one-way pressure valve to realize the intercommunication between the middle connecting pipe and the outside.

The expansion pipe is single-end fixed, and the fixed end of the expansion pipe is fixed by the cooperation of an external hoop and an internal plug expansion core.

A sealing sliding sleeve is arranged between the expansion pipe and the inner sliding rod, and sliding fit with the inner sliding rod is achieved through the sealing sliding sleeve.

The left end and the right end of the middle connecting pipe are respectively provided with a threaded connecting end for realizing the connection of the expansion pipe.

The one-way pressure valve comprises a blind hole arranged in the middle connecting pipe, the blind hole is provided with a penetrating plug towards the opening at one side of the liquid supply, an elastic component is arranged in the blind hole, the opening of the blind hole is provided with the penetrating plug to extrude the plugging piece and the elastic component, the side wall of the middle connecting pipe is provided with an external penetrating hole, liquid enters the blind hole through the penetrating plug to extrude the plugging piece, and the plugging piece overcomes the pressure of the elastic component to realize the conduction of the external penetrating hole and the blind hole.

The deep hole fracturing hole packer has the beneficial effects that through the design, the left side and the right side of the middle connecting pipe are respectively connected with one expansion pipe, the inside of each expansion pipe is provided with the inside sliding rod, each expansion pipe can be contracted and expanded on the inside sliding rod, at least one of the expansion pipe and the middle connecting pipe is provided with the guide head, the diameter of the guide head is larger than the diameter of any part of the deep hole fracturing hole packer, when the deep hole fracturing hole packer is inserted into a deep hole, the guide head is used for realizing the extension guide of the whole deep hole fracturing hole packer, and the expansion pipe and the inner wall of the deep hole can be prevented from being scratched and blocked due to the maximum diameter, and the deep hole fracturing hole with the depth of more than 200 meters can be effectively fractured by being matched with the through hole inside the middle connecting pipe and the one-way pressure valve.

The deep hole fracturing hole packer is simple and novel in structure and convenient to use, deep hole fracturing operation can be effectively achieved, operation risks are reduced, operation efficiency is improved, and the deep hole fracturing hole packer is ideal.

Drawings

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

FIG. 2 is a schematic diagram of the internal structure of the front view of the present utility model;

FIG. 3 is a schematic view of the present utility model in front cross-section;

FIG. 4 is an enlarged schematic view of the structure of the area A in FIG. 2;

Reference numerals: 1, external connection head, 2, first staple bolt, 3, first expansion pipe, 4, first sealing sliding sleeve, 41, sealing fixed end, 42, first tight face of restrainting, 5, connecting piece, 51, middle part grafting expansion core, 6, middle part connecting pipe, 61, internal thread connecting end, 62, through-hole, 63, outside through-hole, 64, run-through stopper, 65, shutoff ball, 66, spring, 7, second staple bolt, 8, second expansion pipe, 9, tip direction head, 10, second tight face of restrainting, 11, external thread connecting end, 12, first grafting expansion core, 13, inside slide bar, 14, oozing liquid hole.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The deep hole fracturing hole packer comprises a middle connecting pipe 6, wherein the left end and the right end of the middle connecting pipe 6 are respectively provided with an internal thread connecting end 61 for realizing connection of expansion pipes, each expansion pipe comprises a first expansion pipe 3 and a second expansion pipe 8, an internal sliding rod 13 is arranged inside each expansion pipe, when the internal sliding rods 13 are fixed, as shown in fig. 2, the internal sliding rods 13 are jointly erected and welded into a whole in the first expansion pipe 3 through an external connector 1 and a connecting piece 5 (the left side of the middle connecting pipe 6), the internal sliding rods 13 are jointly erected and welded into a whole in the second expansion pipe 8 through the connecting piece 5 (the right side of the middle connecting pipe 6) and an end guide head 9, a liquid seepage hole 14 is formed in each internal sliding rod 13, and the two expansion pipes can be respectively contracted and expanded on each internal sliding rod 13. One end of the second expansion pipe 8 is communicated with the middle connecting pipe 6 through the connecting piece 5, when the second expansion pipe is fixed, the middle inserting expansion 51 and the second hoop 7 are matched to realize hooping of the second expansion pipe 8, the other end of the second expansion pipe is fixed on the inner sliding rod 13 in a sliding manner through the second tightening surface 10 and the end guide head 9, and a sealing ring is arranged between the end guide head 9 and the inner sliding rod 13 and used for sealing when the two transversely move and slide. One end of the first expansion pipe 3 is connected with the external connector 1, a first plugging expansion core 12 and an external threaded connection end 11 are arranged on the external connector 1, the first expansion pipe 3 is fixed by matching the first plugging expansion core 12 with the first hoop 2, the external threaded connection end 12 is connected with an external liquid supply device, the other end of the first expansion pipe 3 is fixed by a connecting piece 5 and a first sealing sliding sleeve 4 on the connecting piece 5, a sealing fixed end 41 and a first tightening surface 42 are arranged in the first sealing sliding sleeve 4, and sliding connection between the first expansion pipe 3 and an internal sliding rod 13 is realized by matching the two parts. Through above structure setting, this device is when using, is greater than the expansion pipe through setting up external connection head 1, connecting piece 5, the diameter of tip direction head 9 and passes outward, and it can realize the direction when whole deep hole fracturing hole packer removes in the deep hole to prevent expansion pipe outer wall and deep hole inner wall friction, play fine expansion pipe guard action.

When the expansion pipe is connected with the middle connecting pipe 6, as shown in the drawing, the left end and the right end of the middle connecting pipe 6 are respectively connected with a connecting piece 5 through an internal thread connecting end 61, the connection with the two expansion pipes is realized through the connecting piece 5, the inside of the middle connecting pipe 6 is provided with a through hole 62 to realize the intercommunication between the first expansion pipe 3 and the second expansion pipe 8, the inside of the middle connecting pipe 6 is provided with a one-way pressure valve, and the conducting part of the one-way pressure valve is provided with an external through hole to realize the intercommunication between the middle connecting pipe and the outside.

The utility model discloses a simple one-way pressure valve which can be directly molded in a middle connecting pipe 6 on the basis of the structure, and the simple one-way pressure valve has the following structure that the simple one-way pressure valve comprises a blind hole which is arranged in the middle connecting pipe 6, wherein a through plug 64 is arranged at the opening of one side of the blind hole facing to liquid supply, the through plug is an actual nut with a through center, the screw thread is fixed in the blind hole, a spring 66 is arranged in the blind hole, the through plug 64 arranged at the opening of the blind hole realizes the extrusion of a blocking ball 65 and the spring 66, an external through hole 63 is arranged on the side wall of the middle connecting pipe 6, liquid enters the blind hole through the through plug 64 to extrude the blocking ball 65, and the blocking ball 65 overcomes the pressure of the spring 66 to realize the conduction between the external through hole 63 and the blind hole.

When the utility model is used, the left side and the right side of the middle connecting pipe 6 are respectively connected with the first expansion pipe 3 and the second expansion pipe 8, the inside of the middle connecting pipe 6 is provided with a through hole 62 to realize the intercommunication between the two expansion pipes, the inside of the middle connecting pipe 6 is provided with a one-way pressure valve, the conducting part of the one-way pressure valve is provided with an external through hole 63 to realize the intercommunication between the middle connecting pipe 6 and the outside, the conducting part is any area in the inner side wall of the blind hole, the plugging ball 65 is promoted to shift under certain pressure, the external through hole 63 and the blind hole can be conducted, and the size of the pressure value can be adjusted through the setting position of the external through hole 63.

After the first expansion pipe 3 and the second expansion pipe 8 are subjected to pressure supply, the two expansion pipes realize expansion by single-end sliding on the inner sliding rod 13 and then are attached to the inner wall of a deep hole, a one-way pressure valve is conducted due to continuous pressurization, and liquid enters a region between the two expansion pipes through the outer through hole 63 to realize fracturing.

Claims (5)

1. A deep hole fracturing hole packer is characterized by comprising a middle connecting pipe, wherein the left side and the right side of the middle connecting pipe are respectively connected with an expansion pipe, an inner sliding rod is arranged in each expansion pipe, a seepage hole is formed in each inner sliding rod, each expansion pipe can be contracted and expanded on each inner sliding rod, at least one of the expansion pipe and the middle connecting pipe is provided with a guide head, the diameter of each guide head is larger than that of any part of the deep hole fracturing hole packer, a through hole is formed in each middle connecting pipe to realize intercommunication between the two expansion pipes, a one-way pressure valve is arranged in each middle connecting pipe, and an outer through hole is formed in a conducting part of each one-way pressure valve to realize intercommunication between the middle connecting pipe and the outside.

2. The deep hole fracturing packer of claim 1, wherein the expansion pipe is single-ended fixed.

3. The deep hole fracturing packer of claim 1, wherein a sealing sliding sleeve is arranged between the expansion pipe and the inner sliding rod.

4. The deep hole fracturing packer according to claim 1, wherein threaded connection ends are respectively arranged at the left end and the right end of the middle connecting pipe.

5. The deep hole fracturing hole packer of claim 1, wherein the one-way pressure valve comprises a blind hole arranged in the middle connecting pipe, a through plug is arranged at an opening of the blind hole towards one side of the liquid supply, an elastic part is arranged in the blind hole, the extrusion of the plugging piece and the elastic part is realized by the through plug arranged at the opening of the blind hole, an external through hole is arranged on the side wall of the middle connecting pipe, and liquid enters the blind hole through the through plug to extrude the plugging piece.