CN219220317U - Drilling speed increasing device - Google Patents

Abstract

The utility model belongs to the technical field of drilling equipment, and discloses a drilling accelerating device, which comprises a connector and a drill bit, wherein a guide cavity and a limit cavity are arranged in the connector; the drill bit links to each other with the connecting portion, and in the one end of connecting portion stretched into the direction cavity and laminated with the inner wall of direction cavity, be equipped with the stopper on the connecting portion, in the spacing cavity was located to the stopper, stopper upside and downside all were equipped with the elastic component that is used for hindering stopper ascending or descending. The drilling speed-increasing device can reduce the phenomenon of stuck drilling when soft and hard stratum is replaced, so that the drilling speed is higher.

Description

Drilling speed increasing device

Technical Field

The utility model belongs to the technical field of drilling equipment, and particularly relates to a drilling speed increasing device.

Background

In southwest areas of China, with the increasing of oil and gas exploration and development, underground conditions of drilling into complex stratum are increasing. Taking the glain gas area as an example, the longitudinal pressure system is complex, and the layers of the sleeve are more. The whole area has up to 16 layers of production layers, high and low pressure mutually exist, the cool mountain-whisker river group and the couchgrass mouth group stratum show abnormal high pressure characteristics, the lightning mouth slope group and the jalouse river group are simultaneously stored, the sea wave spreading group and the lamp shadow group are easy to leak, the soft and hard stratum alternately appear, the well body structure is complex, and the upper well hole size is large.

Meanwhile, because the layers are soft and hard staggered, the difficulty of selecting the drill bit is high, and the drilling speeds of different layers are completely different. The average section length of a single well 660.4mm and 444.5mm in the Gaulli area is 3578m, the minimum drilling speed of the well 660.4mm is only 1.52m/h, and the minimum drilling speed of the well 444.5mm is only 1.92 m/h; the 333.4mm drill depth exceeds 6000m, the average section length exceeds 2400m, and the lowest drilling speed is only 3.18 m/h. At the junction of stratum with different attributes, the borehole size design is changed, the downhole drilling tool assembly is not effectively matched and optimized, phenomena of drilling sticking, stick-slip, well deviation exceeding and the like are easily generated, and the realization of the speed-up and efficiency-increasing targets of the upper stratum drilling in the oil and gas-containing area is severely restricted.

Disclosure of Invention

The present utility model aims to solve the above technical problems at least to some extent. To this end, the present utility model aims to provide a drilling acceleration device.

The technical scheme adopted by the utility model is as follows:

the drilling speed-increasing device comprises a connector and a drill bit, wherein a guide cavity and a limit cavity are arranged in the connector, and the limit cavity is positioned at the periphery of the guide cavity and is communicated with the guide cavity; the drill bit links to each other with the connecting portion, and in the one end of connecting portion stretched into the direction cavity and laminated with the inner wall of direction cavity, be equipped with the stopper on the connecting portion, in the spacing cavity was located to the stopper, stopper upside and downside all were equipped with the elastic component that is used for hindering stopper ascending or descending.

Preferably, the end of the drill bit, which is close to the connector, is provided with a first annular protection piece, the end of the connector, which is close to the drill bit, is provided with a second annular protection piece, and sliding seal is arranged between the first annular protection piece and the second annular protection piece.

Preferably, an upper joint is arranged at one end of the connector, which is far away from the drill bit, and the upper joint is connected with the drill rod. The upper joint, the connector and the connecting part are provided with liquid flow channels.

Preferably, a sliding seal is provided between the guide chamber and the connection.

The beneficial effects of the utility model are as follows:

according to the drilling speed increasing device provided by the utility model, the drill bit can retract and extend to a certain extent by arranging the limiting chamber, the limiting block and the elastic piece; after the drill bit contacts the hard stratum, the elastic piece at the upper side of the limiting block is compressed under the action of the reaction force, and the connecting part and the drill bit can retract to a certain extent, so that the friction force between the drill bit and the hard stratum is reduced, and the risk of sticking the drill bit can be reduced; therefore, the device can reduce the sticking phenomenon during the replacement of soft and hard stratum, so that the drilling speed is higher.

Drawings

Figure 1 is a schematic view of the drilling acceleration apparatus of the present utility model.

Fig. 2 is a cross-sectional view taken along B-B in fig. 1.

Fig. 3 is a schematic view of a stopper in another embodiment.

Fig. 4 is an enlarged view of a portion a in fig. 1.

In the figure: 1-upper joint; 2-a connector; 3-a drill bit; 4-connecting part; 5-sliding seals; 6-a guide chamber; 7-limiting the cavity; 8-limiting blocks; 9-an elastic member; 10-a first annular protector; 11-a second annular protector; 12-flow channel.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the embodiments of the present utility model, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in place when the product of the present utility model is used, or the orientation or positional relationship conventionally understood by those skilled in the art is merely for convenience of describing the present utility model and simplifying the description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The utility model will be further described with reference to the drawings and specific examples.

As shown in fig. 1, the drilling acceleration device of the present embodiment includes a connector 2 and a drill bit 3, a guiding chamber 6 and a limiting chamber 7 are disposed inside the connector 2, and the limiting chamber 7 is located at the periphery of the guiding chamber 6 and is communicated with the guiding chamber 6. The drill bit 3 links to each other with connecting portion 4, and connecting portion 4's one end stretches into in the direction cavity 6 and with the inner wall slip laminating of direction cavity 6, is equipped with stopper 8 on the connecting portion 4, in spacing cavity 7 was located to stopper 8, stopper 8 upside and downside all were equipped with the elastic component 9 that is used for hindering stopper 8 to go up or go down.

Specifically, the connector 2 is the main body of the device, one end of the connector is internally provided with a guiding chamber 6, and for the guiding chamber 6, the cross-sectional shape of the connector can be theoretically set to be a cylindrical shape or a rectangular shape or other cubic shapes, but when the connector is actually opened, the effect is better when the connector is set to be a cylindrical shape.

For the limiting chamber 7, the movement of the connecting part 4 is limited mainly by limiting the movement of the limiting block 8, and finally the purpose of limiting the movement of the drill bit 3 is achieved. As shown in fig. 2 and 3, the cross section of the spacing chamber 7 may be provided in various shapes such as an approximate rectangle, an approximate wedge (herein, named "approximate", see fig. 2, because the end of the spacing chamber near the cylindrical chamber is arc-shaped), a circular ring shape (see fig. 3), etc., but the spacing effect of the spacing chamber 7 in the approximate wedge shape and the circular ring shape is better from a practical effect. Of course, the shape of the stopper 8 and its identical and mutually matched are required to satisfy its limiting effect: for the limiting cavity with the cross section similar to the wedge shape, the cross section of the corresponding limiting block is also similar to the wedge shape, and the sizes are the same; and the limiting chambers with the other shapes also correspond to the same limiting blocks.

Meanwhile, for the limiting cavity, when the cross section of the limiting cavity is annular, only one limiting cavity is needed to play a corresponding role. However, when the cross section of the limiting cavity is approximately rectangular or approximately wedge-shaped, more than two limiting cavities are arranged to limit the limiting cavity, and at the moment, a limiting block is arranged in each limiting cavity.

Meanwhile, in order to further realize the effect of the embodiment, one end of the elastic piece positioned above is abutted or connected with the upper end of the limiting chamber 7, and the other end is abutted or connected with the upper side of the limiting block 8; one end of the elastic piece 9 positioned below is abutted or connected with the lower end of the limiting chamber 7, and the other end is abutted or connected with the lower side of the limiting block 8.

In order to facilitate the connection of the device with the drill rod, an upper joint 1 is arranged at one end of the connector 2 far away from the drill bit 3, the upper joint 1 is used for connecting the drill rod, in particular a hydraulic motor on the drill rod, and the connector 2 and the drill bit 3 start to rotate under the drive of the hydraulic motor. As will be appreciated by those skilled in the art, for the hydraulic motor, it may be a turbine motor, a screw motor, etc., all of which may be applied to the present embodiment.

Of course, in this embodiment, similar to the conventional drill bit, the upper joint 1, the connector 2 and the connecting portion 4 are provided with fluid passages 12, and these fluid passages 12 are communicated with the shower nozzle on the drill bit 3 for cooling the drill bit 3 and assisting drilling.

Meanwhile, in order to make the sealing property of the guide chamber 6 and the connection part 4 better, a plurality of sliding seals 5 are provided between the guide chamber 6 and the connection part 4.

In such a case, when the drill bit 3 drills from a soft formation to a hard formation, the rotation speed suddenly decreases, and at this time, the advancing speed of the drill bit 3 is still maintained under the effect of inertia, so that the friction between the drill bit 3 and rock is greatly increased, and a sticking phenomenon is easily generated. After the device of the embodiment is adopted, after the drill bit 3 contacts the hard stratum, the elastic piece 9 at the upper side of the limiting block 8 is compressed under the action of the reaction force, and the connecting part 4 and the drill bit 3 can retract to a certain extent, so that the friction force between the drill bit 3 and the hard stratum is reduced, and the risk of sticking the drill bit can be reduced.

As can be seen from fig. 1, there is a certain gap between the drill bit 3 and the connection head 2 to facilitate the up and down movement of the drill bit 3, but there is a problem in that after a long period of use thereof, the gap may be filled with soil, cuttings, making the up and down movement of the drill bit 3 difficult. Thus, referring to fig. 4, in some embodiments, a first annular protector 10 is provided at the end of the drill bit 3 adjacent to the connector 2, and correspondingly, a second annular protector 11 is provided at the end of the connector 2 adjacent to the drill bit 3, the first annular protector 10 and the second annular protector 11 sliding sealing and sealing the gap between the drill bit 3 and the connector 2. In this case, the first annular protector 10 and the second annular protector 11 seal-protect the gap, preventing entry of soil, debris, or the like into the gap.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.

Claims (8)

1. A drilling acceleration device, characterized in that: the drill bit comprises a connector (2) and a drill bit (3), wherein a guide cavity (6) and a limit cavity (7) are arranged in the connector (2), and the limit cavity (7) is positioned at the periphery of the guide cavity (6) and is communicated with the guide cavity (6); drill bit (3) link to each other with connecting portion (4), and in one end of connecting portion (4) stretched into direction cavity (6) and with the inner wall laminating of direction cavity (6), be equipped with stopper (8) on connecting portion (4), in spacing cavity (7) were located to stopper (8), stopper (8) upside and downside all were equipped with and are used for hindering stopper (8) ascending or elastic component (9) of descending.

2. The drilling acceleration apparatus of claim 1, wherein: one end of the drill bit (3) close to the connector (2) is provided with a first annular protection piece (10), one end of the connector (2) close to the drill bit (3) is provided with a second annular protection piece (11), and sliding sealing is carried out between the first annular protection piece (10) and the second annular protection piece (11).

3. The drilling acceleration apparatus of claim 1, wherein: one end of the connector (2) far away from the drill bit (3) is provided with an upper connector (1), and the upper connector (1) is connected with a drill rod.

4. A drilling acceleration apparatus as defined in claim 3, wherein: the upper joint (1), the connector (2) and the connecting part (4) are respectively provided with a liquid flow channel (12).

5. The drilling acceleration apparatus of claim 1, wherein: a sliding sealing piece (5) is arranged between the guide cavity (6) and the connecting part (4).

6. The drilling acceleration apparatus of claim 1, wherein: the cross section of the limiting cavity (7) is at least one of rectangle, wedge and ring.

7. Drilling acceleration apparatus according to claim 1 or 6, characterized in that: the cross section shape of the limiting block (8) is the same as that of the limiting cavity (7).

8. The drilling acceleration apparatus of claim 1, wherein: the cross section of the guide chamber (6) is cylindrical or rectangular.

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