Gate plate trepanning tool

Abstract

The utility model relates to the field of mine drilling, in particular to a gate flashboard trepanning tool which mainly comprises an external high-pressure sealed cabin and a drilling tool, a high-pressure plunger and a feed positioning baffle ring connected with the high-pressure plunger are arranged in the high-pressure sealed cabin, instantaneous pressure generated during trepanning operation is ingeniously utilized and converted into counter-acting force, and the high-pressure plunger and the feed positioning baffle ring are arranged in the high-pressure sealed cabin. The drilling tool is pushed to open a hole by utilizing the counter-acting force, and a part of instantaneous pressure is washed away, so that the situation that the hole opening tool is punched open under the huge instantaneous pressure due to the pressure effect, and gas and solution in a Christmas tree are leaked is avoided, and the operation safety is ensured.

Description

Technical Field

[0001] The utility model relates to the field of drilling pressure relief, in particular to a gate plate hole opening tool. Background Art

[0002] Christmas trees are widely used in the field of oil exploration and production, especially at the wellhead of completed oil wells for flow control. Christmas trees can also be divided into different sub-types, such as high-temperature and high-pressure Christmas trees, horizontal Christmas trees and vertical Christmas trees. These different types of Christmas trees can be suitable for different application scenarios and environments. Christmas trees are an assembly of valves and accessories used for fluid control in oil and gas wells and provide an inlet for the production tubing string. It includes all the equipment on the flange on the tubing head, and the Christmas tree assembly can be used in a variety of different combinations to meet the needs of various environments and different uses.

[0003] Christmas trees and tubing heads are mainly used for gas production and injection. Since natural gas has a relatively low density and low injection pressure, the wellhead pressure is high and the flow rate is fast regardless of gas production or injection. Therefore, once a blockage occurs inside the Christmas tree or the switch valve is out of control, it is very dangerous to the external environment.

[0004] To solve similar problems mentioned above, patent CN104196484B discloses a method for preventing blowout during mine drilling pressure relief. Two sections of steel pipes with the same diameter are combined together using a flange. One section of the steel pipe is used as a drilling fixed pipe, and the other section of the steel pipe is used as a blowout preventer outside the hole. A pressure relief hole is set under the blowout preventer to release the impact pressure of the gas.

[0005] However, such equipment is not suitable for Christmas trees used in oil extraction or other unusable oil wells. The underground environment is high pressure. In addition to releasing huge instantaneous pressure at the moment of opening the hole, oil spraying will also occur. Even if the equipment disclosed in patent CN104196484B can release such high pressure through the pressure relief hole, the sprayed solution is easy to leak out from the pressure relief hole, causing the pressure relief hole to be blocked, and there is also a huge safety hazard.

[0006] A bigger problem than the blockage of the pressure relief holes is that since the power generated by the equipment is in a different direction from the huge instantaneous pressure, it is very easy for the operator and the hole-opening equipment to be knocked down by the instantaneous pressure, the equipment to be separated from the oil well, and the gas and solution in the oil well to be exposed to the external environment, which not only causes harm to the operator and the environment, but is also prone to explosions.

[0007] In summary, Christmas trees or unusable oil wells require a more professional hole-opening tool that can digest the instantaneous high pressure generated while also ensuring the safety of operators in such an environment, thereby improving the practicality and applicability of the hole-opening tool. Utility Model Content

[0008] In order to solve the problems mentioned in the background technology and overcome the above shortcomings, the utility model provides the following technical solutions:

[0009] A gate plate hole opening tool, which can open holes by an external power supply or directly by manual operation, and its main body includes a high-pressure sealing cabin and a drill;

[0010] The head of the drill bit is a drill bit, and the tail is a drill rod. In the following description, the direction of the drill bit is "front" and the direction of the drill rod is "back". The drill bit can be selected and replaced according to the size of the hole.

[0011] The drill bit is located at the front end of the high-pressure sealed cabin, and the drill rod extends from the rear end of the high-pressure sealed cabin. The high-pressure sealed cabin is divided into an upper part and a lower part by the position of the drill bit. Since the hole opening operation of the gate plate on the Christmas tree or the oil well is required to be carried out under the condition of no fire, the hole opening tooling equipment can only be used to open the hole from the outside to relieve pressure;

[0012] Furthermore, the front part of the high-pressure sealed cabin is provided with a high-pressure switch connector as an opening, and the inside of the opening is provided with left and right spiral threads, which can be used according to the conditions of the required opening, so that the high-pressure switch connector and the part to be opened form a relatively closed space;

[0013] Furthermore, the high-voltage switch connector is hollow inside and communicates with the inside of the high-voltage sealed cabin, and left and right spiral threads are provided in the middle of the high-voltage switch connector, and the drill bit extends out of the high-voltage switch connector;

[0014] Furthermore, a high-voltage passage is provided between the left and right spiral threads and the upper edge of the high-voltage switch connector.

[0015] The high-pressure passage extends into the high-pressure sealed cabin to form a high-pressure passage with a certain length to ensure that when the gate plate opening tooling is working, the released instantaneous high pressure and the solution brought out can enter the high-pressure sealed cabin through the high-pressure passage for pressure release and solution collection.

[0016] A plunger chamber is provided at the tail of the high-pressure passage in the high-pressure sealed cabin. The plunger chamber is arranged at the upper part of the high-pressure sealed cabin and is an internally hollow structure. A sealed high-pressure cover is provided at the tail of the plunger chamber. The sealed high-pressure cover extends downward to above the tank shell where the drill pipe is placed.

[0017] Furthermore, a high-pressure plunger is provided in the plunger chamber, and instantaneous high pressure enters the plunger chamber through the high-pressure channel, and the high pressure pushes the high-pressure plunger backwards. When the high-pressure plunger hits the sealing high-pressure cover, the high-pressure plunger stops moving;

[0018] A feed push arm and a feed positioning retaining ring are movably connected on one side of the high-pressure plunger close to the sealing high-pressure cover, the front end of the feed push arm is connected to the high-pressure plunger, and the rear end of the feed push arm is connected to the feed positioning retaining ring on the drill bit;

[0019] Furthermore, the middle portion of the blade feed push arm is fixed in the high-pressure sealed cabin.

[0020] The drill head part is provided with an anti-collision baffle ring and a feed positioning baffle ring at the front and rear, respectively. The anti-collision baffle ring is located in an empty groove provided below the high-pressure passage in the high-pressure sealing cabin; the feed positioning baffle ring is located in an empty groove provided below the plunger chamber;

[0021] The two slots are separated by baffles at the front, back and top to form two relatively independent slots; the distance of the drill moving forward and backward can be adjusted by the spacing of the baffles;

[0022] In the empty groove where the feed positioning retaining ring is located, a high-voltage couple is also provided in front of the feed positioning retaining ring, and the high-voltage couple is fixed in the empty groove.

[0023] A pressure gauge is provided at the upper part of the high-pressure sealed cabin near the high-pressure switch connector to facilitate observation of the pressure value released during the hole opening process; a pressure relief valve is also provided below the high-pressure sealed cabin to facilitate release of the pressure in the high-pressure sealed cabin.

[0024] When the gate plate hole-drilling tool performs the hole-drilling operation, the high-voltage switch connector is first fixed to the connecting parts on the Christmas tree through left and right spiral threads to form a closed structure; the drill rod extending outside the high-voltage sealed cabin pushes the drill bit to the drilling position to drill the hole under the action of an external power source, and the anti-collision baffle ring on the drill bit also moves forward with the movement of the drill bit, and can also limit the maximum distance the drill bit moves forward;

[0025] When the gate plate opening tooling opens a hole on the Christmas tree, the huge instantaneous pressure and the solution ejected under the huge pressure enter the high-pressure sealed cabin through the high-pressure passage. The solution that has not entered the high-pressure sealed cabin will also be gathered at the high-pressure sealed switch connector due to the effect of the high-pressure sealed switch connector, which will not cause leakage and will not cause harm to the operator;

[0026] The huge pressure entering the high-pressure sealing cabin along the high-pressure passage finally reaches the plunger chamber, and the instantaneous pressure in the plunger chamber exerts a force on the high-pressure plunger to push the high-pressure plunger toward the high-pressure sealing cover. When the high-pressure plunger is acted upon by the force, it also exerts a driving force on the feed positioning retaining ring connected by the feed push arm, pushing the feed positioning retaining ring forward, that is, pushing the drill bit to continue to move forward to completely complete the hole opening operation;

[0027] When the huge instantaneous pressure pushes the high-pressure plunger backward, the sealed high-pressure cover can play a protective role to prevent the high-pressure plunger from slipping out of the plunger chamber; during the forward pushing process of the feed positioning, the forward distance of the feed positioning baffle ring can be controlled by the high-pressure couple to prevent the drill bit from rushing out under the action of huge pressure.

[0028] The gate and gate opening tool can not only be used to open holes and release pressure on gates and gates on oil production trees or oil wells, but can also be used to open gates and gates in common equipment.

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] 1. The present application reasonably utilizes the instantaneous pressure released when opening the hole by providing a high-pressure plunger and a feed positioning retaining ring connected by a feed push arm, and the instantaneous pressure acts on the high-pressure plunger, which then applies a reaction force to the feed positioning retaining ring through the feed push arm. This design not only cleverly utilizes the instantaneous pressure, but also can prevent the drill bit from being ejected even when the instantaneous pressure is very large, thereby improving the practicability and safety of the gate plate hole opening tooling.

[0031] 2. By respectively setting an anti-collision retaining ring and a feed positioning retaining ring on the drill bit, and setting a high-pressure coupler in front of the feed positioning retaining ring, the forward or backward distance of the drill bit is doubly guaranteed, the safety during the hole-opening operation is improved, and the drill bit can be effectively prevented from falling off during the hole-opening operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 This is a cross-sectional view of the upper part and the drill bit of the utility model;

[0034] 1-high-pressure sealing cabin, 2-drill, 21-drill bit, 211-anti-collision retaining ring, 212-feed positioning retaining ring, 22-drill rod, 3-high-pressure switch connector, 4-high-pressure passage, 5-plunger chamber, 51-high-pressure plunger, 6-feed push arm, 7-high-pressure sealing cover, 8-left and right spiral threads, 9-high-pressure couple, 10-high-pressure "O" ring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0037] Example 1

[0038] like Figure 1 As shown, a gate plate opening tool is mainly composed of a high-pressure sealed cabin 1 and a drill 2. A high-pressure switch connector 3 is provided at the front end of the high-pressure sealed cabin 1. The drill bit 21 of the drill 2 extends from the high-pressure switch connector 3, and the drill rod of the drill 2 extends outward from the tail of the sealed cabin 1.

[0039] like Figure 2 The figure shows a side cross-sectional schematic diagram of the gate plate opening tooling. The front high-voltage switch connector 3 is also provided with left and right spiral threads 8, which are located above the drill bit 21, and a high-voltage passage 4 is also provided above the left and right spiral threads 8.

[0040] The high-pressure passage 4 extends from the high-pressure switch connector 3 into the high-pressure sealed cabin 1. In the high-pressure sealed cabin 1, a plunger chamber 5 is provided at the tail of the high-pressure passage 4; a high-pressure plunger 51 is provided in the plunger chamber 5, and a high-pressure sealing cover 7 is provided at the rear of the plunger chamber 5.

[0041] The high-pressure plunger 51 is connected to a feed push arm 6, the front of which is connected to the high-pressure plunger 51, and the rear of which is connected to a feed positioning retaining ring 212 on the drill bit 21, so that the high-pressure plunger 51 is movably connected to the feed positioning retaining ring 212.

[0042] The drill bit 21 is also provided with an anti-collision baffle ring 211, and a partition is set between the anti-collision baffle ring 211 and the feed positioning baffle ring 212 to separate the anti-collision baffle ring 211 and the feed positioning baffle ring 212 to form a separate space; in the empty groove where the feed positioning baffle ring 212 is located, a high-voltage coupler 9 is fixed in front of the feed positioning baffle ring 212.

[0043] The gate and gate plate opening tooling is sealed by a high-pressure "O" ring 10 during the assembly process. The gate and gate plate opening tooling can also be equipped with a pressure gauge and a pressure relief valve.

[0044] Example 2

[0045] Similar hole-drilling tools currently on the market are also equipped with pressure gauges and corresponding pressure relief valves or equipment when in use to release the pressure generated during the hole-drilling process to ensure the smooth progress of the hole-drilling operation and the construction safety of the operators; however, such a setting limits the pressure range that the hole-drilling tool can withstand, especially the instantaneous pressure generated at the moment of hole-drilling. Therefore, the maximum pressure that the traditional hole-drilling tool can withstand is very limited and cannot meet the operation requirements under special environments; not only that, since the instantaneous pressure generated during hole-drilling is opposite to the power direction of the drill, when the instantaneous pressure is too large, it is easy to cause the drill to rebound. The underground environment is very complicated, which poses a great safety hazard to both the operators and the construction site.

[0046] When the gate and plate opening tooling assembled in the embodiment is actually used, a suitable drill bit 2 can be replaced according to the size of the opening. After the drill bit 2 is installed, the operator can choose to open the gate or plate of the oil tree manually or with an external power source as needed.

[0047] When drilling a hole, the operator first fixes the left and right spiral threads 8 in the high-voltage switch connector 3 to the gate or gate plate where the hole needs to be drilled, so that a relatively closed space is formed between the high-voltage switch connector 3 and the hole drilling position, and then starts the drilling operation.

[0048] During the drilling process, the operator can observe the pressure changes in real time through the pressure gauge installed next to the high-voltage switch connector 3. Since the pressure gauge is set near the opening, it is easier for the operator to detect the pressure changes. The drilling progress of the drill bit 21 can be judged by the pressure changes.

[0049] When the drill bit 21 instantly drills a hole at the location where a hole needs to be drilled, a huge instantaneous pressure is released along the high-pressure passage 4 into the high-pressure sealed cabin 1. The tail of the high-pressure passage 4 is connected to the plunger chamber 5. The huge instantaneous pressure enters the plunger chamber 5, pushing the high-pressure plunger 51 in the plunger chamber 5 to move. The tail of the plunger chamber 5 is a high-pressure sealing cover 7, which can block the high-pressure plunger 51 pushed by the instantaneous pressure.

[0050] When the high-pressure plunger 51 is pushed by the instantaneous pressure, the feed positioning baffle ring 212 is pushed by the feed push arm 6, so that the drill bit 21 which is also retracted by the instantaneous pressure impact continues to be pushed forward, and the instantaneous pressure is used to give a reaction force to the drill bit 21 to ensure that the drill bit 21 will not be ejected by the pressure.

[0051] At the same time, an anti-collision baffle ring 211 is also provided on the drill bit 21, which can limit the forward and backward movement range of the drill bit 21; a high-pressure coupler 9 is also provided in front of the feed positioning baffle ring 212, which can limit the movement distance of the feed positioning baffle ring 212 under the action force, thereby providing double protection for the pushing distance of the drill bit 21.

[0052] After the drilling is completed, the operator can open the pressure relief valve to release the pressure in the high-pressure sealed cabin 1 to complete the drilling operation.

[0053] The high-pressure sealed cabin 1 has a stronger ability to withstand pressure. In addition, it also reasonably utilizes the force generated by the instantaneous pressure, which can not only prevent the drill bit 21 from popping out, but also can use the reaction force generated by the instantaneous pressure on the drill bit 2 to open the hole more quickly when the operator manually opens the hole even without an external power source, thereby ensuring the safety of the operator and saving the operator's physical strength.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A gate plate opening tool, comprising a high-pressure sealed cabin (1), a drill (2), a pressure gauge, and a pressure relief valve, wherein the head of the drill (2) is a drill bit (21), and the tail is a drill rod (22), the drill bit (21) is located at the front end of the high-pressure sealed cabin (1), and the drill rod (22) extends from the rear end of the high-pressure sealed cabin (1), characterized in that: The high-pressure sealed cabin (1) is provided with a plunger chamber (5), and the plunger chamber (5) is provided with a high-pressure plunger (51); the drill bit (21) is provided with a feed positioning retaining ring (212); the high-pressure plunger (51) is provided with a feed push arm (6), the front end of the feed push arm (6) is connected to the high-pressure plunger (51), and the rear end is connected to the feed positioning retaining ring (212), and the middle part of the feed push arm (6) is fixed to the high-pressure sealed cabin.

2. A gate plate opening tool as claimed in claim 1, characterized in that: An anti-collision baffle ring (211) is also provided in front of the feed positioning baffle ring (212) on the drill bit (21), and the anti-collision baffle ring (211) and the feed positioning baffle ring (212) are separated by a baffle plate to form two independent empty grooves.

3. A gate plate opening tool as claimed in claim 2, characterized in that: A high-voltage coupler (9) is also provided in the empty groove where the feed positioning retaining ring (212) is located, and the high-voltage coupler (9) is fixed in front of the feed positioning retaining ring (212).

4. A gate plate opening tool as claimed in claim 1, characterized in that: The front part of the high-pressure sealed cabin (1) is an open high-pressure switch connector (3), and the drill bit (21) is located in the high-pressure switch connector (3).

5. A gate plate opening tool as claimed in claim 4, characterized in that: The high-voltage switch connector (3) is also provided with left and right spiral threads (8).

6. A gate plate opening tool as claimed in claim 5, characterized in that: A high-voltage passage (4) is provided between the left and right spiral threads (8) and the upper edge of the high-voltage switch connector (3).

7. A gate plate opening tool as claimed in claim 6, characterized in that: The high-pressure passage (4) extends from the high-pressure switch connector (3) to the interior of the high-pressure sealed cabin (1), and the tail of the high-pressure passage (4) is in communication with the plunger chamber (5).

8. A gate plate opening tool as claimed in claim 6, characterized in that: A sealing high-pressure cover (7) is provided at the tail end of the plunger chamber (5).

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