Assembly drilling tool

FIELD: mining.

SUBSTANCE: drilling tool comprises a drill bit (2) connected to the drill rod (1) by a connector (3) of the drill bit. The drill rod is made of sections (11) of the drill rod. Each section of the drill rod comprises an inner section (111) of the rod and a hollow outer section (112) of the rod. The inner section of the rod is fixed with the ability of rotation in the outer rod section. The inner rod sections are joined together and form the inner rod (11') of the drill rod. The outer rod sections are connected together and form the outer rod (12') of the drill rod. The inner rod is connected to the output shaft of the power unit, and the outer rod is rigidly connected to the housing of the power unit.

EFFECT: reduction of friction force between the drill rod and the borehole wall.

14 cl, 7 dwg

 

The technical FIELD

The present invention relates to a drilling tool, in particular to the assembled drilling tool and more particularly to a modular drilling tool suitable for fast drilling in hard rock.

The LEVEL of TECHNOLOGY

Drilling in rocks is a very important task in industries such as mining, construction, tunneling, etc., for example, drilling anchor holes and blast holes. During drilling uses a variety of drilling tools according to the different principles of drilling. It is currently used mostly percussion-rotary drilling and rotary drilling with percussion-rotary drilling is breaking and bursting rocks, soil, etc. of the drill crown for their split, and thus is drilling; rotary drilling is a cutting and grinding rocks, soil, etc. of the drill crown, and thus is drilling. During drilling, regardless of its working principle, the common denominator is the need for power transmission from the power unit to the drill crown through the drill stem to effect the drilling. Thus, drill rod, connected with the drilling crown, respectively, vary in type, such as drilling ..... the ha for rotary percussive drilling rod for rotary drilling and the like, and also has a large number of types section of drill rods, such as round drill rod, hex drill rod, spiral drill rod, etc. currently, there are two basic ways to use the drill rods, i.e. according to the one-way rotary percussive drill rod is used for drilling, in combination with appropriate drilling crown, and from the power unit to the drill crown passed as strike force and cutting force, and the task of drilling is achieved by frequent strikes on rocks, soil, etc. of the drill crown with subsequent splitting of these breeds; and according to another method of rotary drilling rod is used for drilling, in combination with appropriate drilling crown, and from the power unit to the drill crown transmit only the power of cutting and grinding force, and the task of drilling can only be achieved by cutting and grinding of rocks, soil, etc.

Both the above methods have significant disadvantages, consisting in particular in respect of the first method is that during drilling, which requires a large capacity, there are large mechanical vibration, and there is friction between the drill rod and the borehole wall, which lead to high power consumption, strong noise and slow speed the drilling, as well as complicate the drilling of deep wells. In the second method, despite the fact that drilling can be achieved through high-speed rotary cutting and thus can be achieved by high speed drilling, including deep wells, however, as a result of increased speed increases the friction between the drill rod and the wall of the borehole, resulting in increased power consumption and wear of the drill rod, and significantly deteriorate the reliability and safety of the drill rod.

According to the prior art, the transmission of power from the drilling machine to the drill crown occurs by rotation and/or axial movement of the drill rod, and hence a common drawback is that during the movement of the drill rod inevitably occurs friction between it and the borehole wall, and if the well was drilled reaches a great depth, to overcome the specified friction between the drill rod and the borehole wall will require a lot of power, and to overcome this drawback during the drilling of such wells can be applied only means, such as a higher power, which leads to additional consumption of resources; in addition, because of the friction between the drill rod and the borehole wall during Buren what I shortens the life of the drill rod because of its wear, that increases the cost of drilling. In addition, in this prior art, the length of drill rod is constant, and, if necessary, drilling wells with different depths, the result can only be achieved by replacing the drill rods, and thus arises the need to produce different rods with different technical characteristics, which entails an increase in the processing cost and complicates the manufacture.

Thus, there is a crucial and urgent need to create a drilling tool, thanks to which can be reduced the friction between the drill rod and the wall of the borehole, and can be given a sufficiently high speed of rotation of the drill crown without excessive consumption of power should be reduced dimensions of the drill rod to meet the needs of drilling wells of different depths.

DISCLOSURE of INVENTIONS

TECHNICAL TASK

To eliminate the above disadvantages of the prior art, consisting of a large friction between the drill rod and the borehole wall, low efficiency, high cost and complexity of manufacture due to the excessive number of technical conditions for the drilling rods and the like, or eliminate at least one of the above mentioned disadvantages in this and the finding proposed modular drilling tool which effectively eliminates the above disadvantages of the prior art.

TECHNICAL SOLUTION

Proposed modular drilling tool, which contains the drill rod 1, the drill bit 2 and the connector 3 drill bits, and drilling crown 2 is connected to the drill rod 1 through the connector 3 drill bits, characterized in that the drill rod 1 formed by the connection of the sections 11 of the drill rod, each of which contains an inner section 111 of the rod and a hollow outer section 112 of the rod, while the inner section 111 of the rod is fixed rotatably in the outer section 112 of the rod, with the inner section 111 of the rod of each of the sections 11 of the drill rods are connected together to form the inner rod 11' rig rod 1, the outer section 112 of the rod are connected together to form the outer rod 12' drill rod 1, while the inner rod 11' drill rod 1 is connected with the output shaft of the power unit, and the outer rod 12' is rigidly connected to the housing of the power unit.

Preferably the connector 3 drill bits, includes inner connector 31 and the hollow outer connector 32, and the inner connector 31 is mounted for rotation inside the external connector 32, while the inner connector 31 is connected to the inner rod 11' drill rod 1 in one to the goals and drilling crown 2 at the other end, moreover, axial load and radial load from core bit 2 are transmitted to the external connector 32 through the inner connector 31, while the outer connector 32 at one end is connected to the outer rod 12' drill stem 1.

In addition, the inner section 111 of the sections 11 of the drill rod installed inside the outer sections 112 of the rod using a bearing 13, and the inner section 111 of the rod located coaxially with the outer sections 112 of the rod and provided with a Central hole 1111.

Inner connector 31 of the connector 3 drill bits, installed inside the external connector 32 with the use of the bearing 33, and the inner connector 31 is located coaxially with the outer connector 32 and is provided with a through hole 34, which is connected with a Central hole 1111.

The bearing 13 of the section 11 of the drill rod contains two bearings 131, 132, supporting concentricity, and the bearing 33 of the connector 3 of the drilling crown contains one axial bearing 331 carrying axial load, and two radial bearing 332, 333, bearing radial load and support concentricity.

Preferably these two bearings 131, 132, supporting concentric, are self-aligning ball bearings, respectively defined in two ends of the inner sections 111 of the rod, settling the second bearing 331 is thrust ball bearing, and the two radial bearing 332, 333 are self-aligning ball bearings located on both axial sides of the bearing 331.

In addition, the inner section 111 of the rod adjacent sections 11 of the drill rod 1 are joined together using threaded connections or spotboy design, and the outer section 112 of the rod are connected together using a threaded connection or spotboy design.

Inner rod 11' drill rod 1 is connected with the inner connector 31 of the connector 3 of the drilling crown with threaded connection or spotboy design, and the outer rod 12' is connected with an external connector 32 with threaded connection or spotboy design.

Preferably the inner section 111 section 11 of the drill rod 1 is equipped with a square groove 1112 located at one end, and a square cylinder, 1113, located at the other end, with the specified square head 1113 may be inserted into the said square groove 1112, while the outer section 112 section 11 of the drill rod with internal thread 1121 located in one end, and an external thread 1122, located at the other end, with the specified external thread 1122 can be threaded into specified internal thread 1121.

Inner connector 31 connect the I 3 drilling crown is equipped with a square groove 312, located at one end, and a square cylinder, 1113, located at one end of the inner rod 11' drill rod 1 may be inserted into the said square groove 312 that is located at one end of the inner connector 31, while the outer connector 32 has an internal thread 321 located at one end and male threads, 1122, located at one end of the outer rod 12' drill rod 1 may be screwed into the internal thread 321, located at one end of the external connector 32.

In addition, the external connector 32 of the connector 3 of the drilling crown is further provided with a stopper 322 mounted at the other end, and this tube 322 is fixed in the outer connector 32 by threaded connection between the tube 322 and the inner connector 31 mounted a sealing ring 35, and the inner connector 31 provided with a protrusion 311, made in the outer surface, the protrusion 311 abuts against the axial bearing 331.

In addition, the inner section 111 of the rod adjacent sections 11 of the drill rods 1 are connected together through an internal rod connector 121, and the outer section 112 of the rod are connected together by means of the outer rod connector 122.

The inner section 111 of the drill rod 1 is connected with the inner connector 31 when Edenites 3 drilling crown through the inner rod connector 121, and the outer section 112 of the rod is connected with an external connector 32 through the outer rod connector 122.

Preferably the inner section 111 of the rod and the inner connector 31 is connected to the inner rod connector 121 using a threaded connection or spotboy design, and the outer section 112 of the rod and the outer connector 32 is connected to the outer rod connector 122 with threaded connection or spotboy design.

BENEFICIAL EFFECTS

Modular drilling tool according to the present invention contains the drilling rod formed by the connection of the various sections of the drill rod, and the length of drill rod can be freely selected to suit the specific requirements of drilling wells of different depths, resulting in reduced requirements for technical characteristics and models of the drill rod and lightened drilling; section of drill rod, connected to each other, contains: inner boom section connected together and forming the inner rod drill rod, and the outer boom section connected together and forming the outer rod drill rod and the inner rod is connected with the output shaft of the power unit and drilling crown, with axial and radial load of the drilling crown passed naru is Noah rod through the connector drilling crown, so that the inner rod is connected with the drilling crown rotates at high speed in the outer rod without friction with the wall of the borehole and transmits torque from the power unit to the drill crown, while the outer rod rigidly connected to the housing of the power unit and therefore remains stationary and only bear axial and radial load of the drilling crown; thus the combination of the inner rod and the outer rod according to the present invention allows to rotate the drill bit at high speed without friction between the drill rod and the borehole wall, which greatly increases the speed and efficiency of drilling; moreover, since domestic drilling section provided with Central holes and as these Central holes are connected to each other and form a channel in the center of the inner rod, as a result by means of the inner rod may be buried in the water and removed the sludge and can be further optimized drilling and can be reached fast drilling in solid rock.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 schematically shows an embodiment of the modular drilling tool according to the present invention;

Figure 2 schematically shows a longitudinal section of a single drilling section coz the ACLs implementation variant, shown in figure 1;

Figure 3 schematically shows a longitudinal section of the connector core bit according to a variant implementation, shown in figure 1;

Figure 4 schematically shows the method of joining two drill sections, shown in figure 2;

Figure 5 schematically shows the method of connection of the drill section, shown in figure 2 and the connector of the drill bit shown in Fig 3;

Figure 6 schematically shows another way of connecting two drill sections, shown in figure 2; and

7 schematically shows another method of connecting the drilling section, shown in figure 2, and connector drilling crowns, shown in figure 3.

The IMPLEMENTATION of the INVENTION

For a clearer understanding of the above objectives, features and advantages of the present invention, below it will be described in detail with reference to accompanying drawings and specific implementations.

Below are described various details for a full understanding of the present invention, but the present invention can be implemented in other ways than that described below, and thus, the present invention is not limited to the described below implementation.

Figure 1-5 shows the design of the modular drilling tool according to the present invention and its composition, as well as construction and will connect the global relationship of the respective components. Figure 1 shows the structure and composition of the modular drilling tool according to one implementation variant of the present invention; figure 2 shows the design of a single section of drill rod in the modular drilling tool; figure 3 shows the design of the connector drilling crowns used in the specified modular drilling tool; figure 4 shows the structure of a connector for connecting adjacent drill sections used in the modular drilling tool; and figure 5 shows the structure of connection of drill sections and the connection of the drill crowns in the specified modular drilling tool.

As shown in figure 1, the modular drilling tool includes a drilling rod 1, the drill bit 2 and the connector 3 drill bits, and drilling crown 2 is connected to the drill rod 1 through the connector 3, characterized in that the drill rod 1 formed by the connection of the sections 11 of the drill rod, each of which contains an inner section 111 of the rod and a hollow outer section 112 of the rod, with the specified inner section 111 of the rod mounted for rotation in the outer section 112 of the rod, while the inner section 111 of the rod of each of the sections 11 of the drill rod are connected together and form the inner rod 11' drill stem 1, the outer section 112 of the rod are connected together and form the outer is th rod 12' drill stem 1, inner rod 11' drill rod 1 is connected with the output shaft of the power unit and the outer rod 12' drill stem 1 is rigidly connected to the housing of the power unit.

Connector 3 drilling crown includes inner connector 31 and the hollow outer connector 32, and the inner connector 31 is mounted for rotation inside the external connector 32, the inner connector 31 is connected to the inner rod 11' drill rod 1 at one end and with the drilling crown 2 at the other end, with an axial load and radial load from core bit 2 are transmitted to the external connector 32 through the inner connector 31, and the outer connector 32 is connected to the outer rod 12' drill rod 1 at one end.

In the above modular drilling tool according to the present invention the drill rod may be formed from any combination of the sections of the drill stem, thus the length of the drill rod can be freely selected depending on the requirements of drilling wells of different depths; the section of drill stem, forming a drilling rod, contain outer boom section and an inner boom section and the inner section of each of the drill sections are connected together and form the inner rod drill rod, and the outer sections are connected together and form narodowego drill stem, this outer rod is firmly connected to the housing of the power unit, and the inner rod is connected with the output shaft of the power unit. Thus, during drilling, the outer rod does not move, and the inner rod rotates freely within the outer rod and transmits power drill crown for drilling. In the mentioned process, since the outer rod does not move, there is no friction between the drill rod and the wall of the borehole, resulting in reduced power loss and increases the service life of the drill rod; in addition, the connection of the drill crowns in modular drilling tool according to the present invention can transmit the axial load and the radial load generated by the drilling crown, the outer rod and, consequently, the housing of the power unit through the outer rod so that the inner boom section do not bear axial load or radial load, resulting in not only prolongs the life of the internal rod, but also achieved high rotation speed the inner rod and increases drilling speed, i.e. increases the drilling efficiency.

Preferably, as shown in figure 2, in this implementation variant of the inner section 111 of the sections 11 of the drill rod installed inside the outer sections 112 of the rod through the terminal connection or lead the ICA 13 and the inner section 111 of the rod located coaxially inside the outer sections 112 of the rod and have a Central hole 1111, moreover, the bearing 13 of the section 11 of the drill rod contains two self-aligning ball bearing 131, 132, arranged concentrically, with the bearings 131, 132 respectively installed at two ends of the inner sections 111 of the rod, and the outer section 112 section 11 of the drill rod is located at one end of the internal thread 1121 and located at the other end an external thread 1122, with external thread 1122 made with the possibility of screwing into the internal thread 1121. This design can provide a connection between the inner sections of each section of the drill rod and the connection between the outer boom section, and if the inner boom section maintain the axial location relative to the outer boom sections, the inner boom section to rotate at high speed inside the outer boom section, while the outer rod remains stationary. In addition, the Central holes of the inner boom sections are connected to form a through hole leading to the drilling of the crown, so that the drill bit could be served water, and could be removed sludge, resulting in increased drilling efficiency and longer service life of the drill crown.

In addition, as shown in figure 3, according to this implementation variant inner connector 31 of the connector 3 of the drill crowns mouth is oflen inside the external connector 32 through a bearing 33, moreover, the inner connector 31 is located coaxially with the outer connector 32 and has a through hole 34, which communicates with the Central hole 1111, the bearing 33 of the connector 3 of the drilling crown contains a single thrust ball bearing 331 carrying axial load, and two self-aligning ball bearing 332, 333, which bear radial load and maintain concentricity, and self-aligning ball bearings 332, 333 are located on two sides of the thrust ball bearing 331 and the inner connector 31 provided arranged on the outer surface of the protrusion 311, which rests on the bearing 331. This design of the connection of the drilling crown is not only contributes to maintaining the coaxial arrangement of the inner and outer connectors for rotation internal connections at very high speed, but also facilitates the transfer of axial and radial loads from the drill crowns using inner join to an outer join and then to the outer rod. In addition, a through hole internal connections communicates with the Central bore of the inner rod, and thus through him may be served water and can be removed sludge.

Preferably, as shown in figure 4, the inner section 111 of the rod adjacent sections 11 of the drill rod 1 is uedineny together by means of thread or spotboy design, and the outer section 112 of the rod are connected together by means of thread or spotboy design, and in this implementation variant of the inner section 111 section 11 of the drill rod 1 has a square groove 1112 at one end and a square cylinder 1113 at the other end, with the specified square head 1113 can be inserted into the square groove 1112, while the outer section 112 section 11 of the drill rod is threaded 1121 at one end and an external thread 1122 at the other end, and an outer thread 1122 may be screwed into the internal thread 1121 for the communication between the inner boom section and the connection between the outer boom section. Under this implementation variant for the inner boom section uses a method of pairing a square head and square groove, and after a specified coupling inner rod, formed of the inner boom section has a square head at one end and has a square notch in the other end, which can be respectively connected with the inner connector connection of the drilling crown and the output shaft of the power unit; a way to connect through internal and external threads used to connect the outer boom section, and after the specified connection of the outer rod, formed the outer boom section, has uinuu the thread at one end and threaded at the other end, which can be respectively connected with the external thread of the connector drilling crown and the housing of the power unit.

According to the above implementation variant, despite the fact that the inner boom section is described as connected by inner and outer four-sided head and a groove for the specialist it is obvious that there may be used various ways of connecting, such as internal and external screw connection, internal and external hex connection, inner and outer triangular connection and the like; the outer boom section is described as connecting through internal and external threads, while can be used in a variety of connection methods, such as inner and outer triangular connection, inner and outer four-sided connection, internal and external hex connection etc.

In addition, as shown in figure 5, the inner rod 11' drill rod 1 is connected with the inner connector 31 of the connector 3 core bit through the thread or spotboy design, and the outer rod 12' is connected with an external connector 32 through the thread or spotboy design. Under this implementation variant inner connector 31 of the connector 3 of the drilling crown is a square groove 312 in one to whom nce, with square head 1113 internal sections 111 of the rod in one end of the inner rod 11' drill rod 1 can be inserted into the square groove 312 at one end of the inner connector 31; outer connector 32 is an internal thread 321 at one end and male threads 1122 outer section 112 of the rod at one end of the outer rod 12' drill rod 1 can be screwed into the internal thread 321 at one end of the outer connector 32, and thus can be made the connection between the inner rod and the inner connector rod, and a connection between the outer rod and an outer connector bar.

Similarly, according to the above implementation variant, despite the fact that the connection between the inner rod and the internal connector is described as implemented through the inner and outer four-sided head and a groove for specialists it is obvious that there may be used various ways of connecting, such as internal and external screw connection, internal and external hex connection, inner and outer triangular connection, etc.; the connection between the outer rod and an external connector is described as performed by the internal and external threads, while can be used in a variety of ways to connect the tion, such as inner and outer triangular connection, inner and outer four-sided connection, internal and external hex connection etc.

According to the above implementation variant, shown in figure 3, the outer connector 32 of the connector 3 of the drilling crown is further provided with a stopper 322 located at the other end, and this tube 322 is fixed in the outer connector 32 through the thread, and between the tube 322 and the inner connector 31 mounted a sealing ring 35. This design facilitates the installation of a thrust ball bearing 331 and supports reliable lubrication of radial and thrust bearings and thus prolongs their lifespan.

Figure 6 and 7 respectively shows another way to connect sections of drill rod and other way of connection sections of the drill rod with drill crown.

As shown in Fig.6, the inner section 111 of the rod adjacent sections 11 of the drill rod 1 is connected through an internal rod connector 121, and the outer section 112 of the rod are connected through the outer rod connector 122. Under this implementation variant of the inner section 111 of the rod connected to the inner rod connector 121 using spotboy design, and the outer section 112 of the rod is connected to the outer rod connector 122 with a threaded connection.

As shown in Fig.7, the inner section 111 of the drill rod 1 is connected with the inner connector 31 of the connector 3 of the drilling crown through the inner rod connector 121, and the outer section 112 of the rod is connected with an external connector 32 through the outer rod connector 122. Under this implementation variant inner connector 31 is connected to the inner rod connector 121 using spotboy design, and the external connector 32 is connected to the outer rod connector 122 with a threaded connection.

According to the options the implementation shown in Fig.6 and 7, despite the fact that the connection between the inner boom section, and between the inner connector and the inner rod connector carried out using the inner and outer four-sided head and a groove for the specialist it is obvious that there may be used various ways of connecting, such as internal and external screw connection, internal and external hex connection, inner and outer triangular connection and so on; despite the fact that the connection between the outer boom section, and between the external connector and the outer rod connector carried out using internal and external threads for professionals it is obvious that can be used various ways of connecting, such as inner and outer triangular connection, inner and outer four-sided connection, internal and external hex connection etc.

Above were described only the preferred implementations of the present invention, which should not be construed as limiting the present invention. For professionals it is obvious that the present invention can be made of various modifications and changes. Any modifications, equivalent substitutions, improvements etc. within the idea and principle of the present invention fall into the scope of protection of the present invention.

1. Modular drilling tool containing drilling rod (1), drill bit (2) and connector (3) drill bits, and drilling crown (2) connected to the drill rod (1) through connector (3) drill bits, characterized in that
the drill rod (1) is formed by the connection of the sections (11) of the drill rod, each of which contains an inner section (111) of the rod and a hollow outer section (112) rod,
this inner section (111) of the rod is fixed rotatably in the outer section (112) rod,
with the inner section (111) of each of the sections (11) of the drill rod are connected together to form the inner rod (11') of the drill rod (1),
the outer section (112) of the rods are connected together to the formation of the I outer rod (12') of the drill rod (1),
the internal rod (11') of the drill rod (1) is connected with the output shaft of the power unit, and
the outer rod (12') is rigidly connected to the housing of the power unit.

2. Modular drilling tool according to claim 1, characterized in that the connector (3) drilling crown contains an internal connector (31) and a hollow outer connector (32),
moreover, the internal connector (31) is mounted for rotation inside the external connector (32),
the internal connector (31) is connected with the internal rod (11') of the drill rod (1) at one end and with the drill crown (2) at the other end,
moreover, axial load and radial load from the drilling crowns (2) transferred to the external connector (32) via the internal connector (31),
when this outer connector (32) is connected to the outer rod (12') of the drill rod (1).

3. Modular drilling tool according to claim 2, characterized in that the inner section (111) of the sections (11) of the drill rod installed inside the outer sections (112) rod using a bearing (13),
with the inner section (111) of the rod located coaxially with the outer sections (112) of the rod and provided with a Central hole (1111).

4. Modular drilling tool according to claim 3, characterized in that the internal connector (31) of the connector (3) drilling crown is installed inside the external connector (32) using the needle bearing is nick (33),
moreover, the internal connector (31) is located coaxially with the outer connector (32) and provided with a through hole (34), which is associated with the Central hole (1111).

5. Modular drilling tool according to claim 4, characterized in that the bearing (13) section (11) of the drill rod contains two bearings (131, 132), which supports the concentricity and
bearing (33) of the connector (3) drilling crown contains one axial bearing (331)carrying axial load, and two radial bearing (332, 333)bearing radial load and support concentricity.

6. Modular drilling tool according to claim 5, characterized in that the two bearing (131, 132), supporting concentric, are self-aligning ball bearings, respectively defined in two ends of the inner sections (111) rod, an axial bearing (331) is thrust ball bearing, and the two radial bearing (332, 333) are self-aligning ball bearings, located on both sides of the axial bearing (331).

7. Modular drilling tool according to any one of claims 1 to 6, characterized in that the inner section (111) of the rod adjacent sections (11) of the drill rod (1) are connected together using a threaded connection or spotboy design and the outer section (112) of the rods are connected together using a knot is a new connection or spotboy design.

8. Modular drilling tool according to claim 7, characterized in that the inner rod (11') of the drill rod (1) are connected to the internal connector (31) of the connector (3) drilling crown with threaded connection or spotboy design, and the outer rod (12') is connected with an external connector (32) with threaded connections or spotboy design.

9. Modular drilling tool of claim 8, wherein the inner section (111) of section (11) of the drill rod (1) is provided with a square groove (1112), located at one end, and a square head (1113), located at the other end,
with a square head (1113) is arranged to insert into the square groove (1112),
when this outer section (112) of section (11) of the drill rod with internal thread (1121), located at one end and an external thread (1122), located at the other end,
with external thread (1122) made with the possibility of screwing into the internal thread (1121).

10. Modular drilling tool according to claim 9, characterized in that the internal connector (31) of the connector (3) drilling crown is equipped with a square groove (312)located at one end,
with a square head (1113), located at one end of the internal rod (11') of the drill rod (1), configured to insert into the specified square groove (312)located in the od of the second end of the inner connector (31),
when this outer connector (32) has an internal thread (321), located at one end,
with external thread (1122), located at one end of the outer rod (12') of the drill rod (1), made with the possibility of screwing into the internal thread (321)located at one end of the outer connector (32).

11. Modular drilling tool of claim 10, wherein the outer connector (32) of the connector (3) core bit further provided with a tube (322)installed at the other end,
moreover tube (322) is fixed in the outer connector (32) by means of a threaded connection between the tube (322) and an internal connector (31) is installed o-ring (35),
moreover, the internal connector (31) is provided with a protrusion (311)made in the outer surface,
when the specified protrusion (311) apart in the axial bearing (331).

12. Modular drilling tool according to any one of claims 1 to 6, characterized in that the inner section (111) of the rod adjacent sections (11) of the drill rod (1) are connected together through an internal rod connector (121) and the outer section (112) of the rod are connected together by means of the outer rod connector (122).

13. Modular drilling tool according to item 12, wherein the inner rod (11') of the drill rod (1) are connected to the internal connector (31) of the connector (3)core bit through the inner rod connector (121) and the outer rod (12') is connected with an external connector (32) through the outer rod connector (122).

14. Modular drilling tool according to item 13, wherein the inner section (111) of the rod and the internal connector (31) is connected to the inner rod connector (121) using a threaded connection or spotboy design and the outer section (112) of the rod and the outer connector (32) is connected with the outer rod connector (122) using a threaded connection or spotboy design.



 

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4 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to the area of well-workover operations and can be used for drilling in sludge underflow, cleaning of cavern and installing of a cement plug. The device contains a hollow barrel 1 with though radial holes 2 and outside collar 3, upper and lower sleeves 4, 5 installed with formation of tilted annular slit 6 between their upper and lower surfaces respectively. The lower sleeve 5 can move along the axis of the hollow barrel 1. The outside collar 3 of the hollow barrel 1 is formed below through radial holes 2. The lower sleeve 5 in the upper part has an inner groove 7 for the outside collar 3 of the hollow barrel 1 corresponding to the length of its axial movement along the hollow barrel 1. The lower edge of through radial holes 2 of the hollow barrel 1 is placed above the level of the tilted annular slit 6. Inner surfaces of the upper and lower sleeves 4, 5 and the lower surface of the hollow barrel matching them form an annular cavity A connected hydraulically to a cavity of the hollow barrel 1 through radial through holes 2. The device contains the upper and lower crossover shoes 8, 9. The upper crossover shoe 8 is connected from outside to the upper sleeve 4 and from inside to the hollow barrel 1; it has a prolonged bladed centraliser 10. The lower crossover shoe 9 is connected from inside to the hollow barrel 1 and presses the lower sleeve 5 through a rubber resilient element 11 with pressing force calculated as per inequality. In the middle part the lower crossover shoe 9 has an inner collar 12. In the hollow barrel 1 there are located in-series a thrust bush 13, a hollow piston 14 and a spring 15 resting on the collar 12 of the lower crossover shoe 9 with pressing force calculated as per inequality. The hollow piston 14 has a saddle for a setting ball 16; it is installed with tight covering of through radial holes 2 of the hollow barrel 1. The device contains a rock destruction tool 17 connected to the lower crossover shoe 9.

EFFECT: improving quality of cavern cleaning, installing of cement plug, increasing operating reliability and expanding technological capabilities of the device due to potential drilling into sludge underflow, automatic cleaning and centring of the device in regard to the well axis with rated diameter.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to supporting centring devices used in bottom hole assembly (BHA) at controlled directional drilling of wells. A vibration calibrating device for well drilling includes a hollow housing with longitudinal blades welded on it, inside which there located on the axis is a bladed spool installed with possibility of periodic covering of a flow cross-section, which amplifies high-frequency longitudinal vibrations of a bit, which contribute to effective destruction of mine rock, reduces torsion and transverse vibrations of BHA, and allows well centring and calibration.

EFFECT: improving well drilling efficiency.

2 dwg

FIELD: mining.

SUBSTANCE: formation method of a well in a coal layer involves drilling of the well mainly having a horizontal shaft in the coal layer using a flushing solution containing liquid, and pressure reduction in a down well so that drilling modes are not higher than balanced ones for drilling, mainly of the horizontal shaft owing to supplying flushing solutions by means of a pump mainly from the horizontal shaft of the well to surface.

EFFECT: drilling in layers with ultralow pressure without any risk of loss of flushing liquid and blockage of the layer.

30 cl, 11 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves creation of differential pressure in a well-formation system due to density of flushing liquid, creation of hydrodynamic component of differential pressure by starting drilling pumps at approximation of a bit to a working face, as well as switching-over the hammer to design load and frequency of its rotation. Differential pressure of flushing liquid at the face is increased till drilling speed increase is stopped with further maintenance of the set mode.

EFFECT: increasing the drilling rate of high-permeability rocks during inclined and horizontal drilling.

4 dwg

FIELD: mining.

SUBSTANCE: device includes a basic machine with an arm, a working element hinged to it and including a percussive compacting mechanism with a stamp and hydraulic cylinders. The working element includes a hollow tubular housing, in which there movably installed along the axis is a hollow cylindrical cover adjacent to the above tubular housing; the above cylindrical cover includes a percussive compacting mechanism movably installed in it along the axis, and is equipped on lower end projecting out of the housing and enclosing it on the outer side with a supporting flange, on a flat end surface of which, which faces the housing, there hinged by means of eye lugs are at least four hydraulic cylinders parallel to the housing axis and in-pair located in its two diametrical planes. The hydraulic cylinders constituting the first pair are arranged outside the tubular housing and hinged to the housing with ends of their stocks pushed inside the cylinders till stop by means of eye lugs on its external side surface. The hydraulic cylinders constituting the second pair are arranged on outer side of the cylindrical cover, but in internal plane of the housing in through slots that are parallel to its axis and made on its inner side surface, and with ends of their stocks extended to the outside till stop, they are hinged by means of eye lugs to the upper part of the compacting mechanism adjacent to the inner side surface of the cylindrical cover and installed in it so that length of the lower part of its stamp, which projects out of the cover, is basically equal to working travel of the above hydraulic cylinders and at the same time is half the full length of the stamp submerged in the ground.

EFFECT: improvement of production capacity of the device operation, its efficiency and reliability; reduction of its overall dimensions; improvement of working conditions and safety regulations.

2 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to machine building and can be used in production of long-sized sucker rods making the component of sucker rod string in oil extraction. Bar is subjected to machining and straightening-finishing. Thread is cut at bar ends while bulge is swaged ahead of said thread. Thrust ring is fitted at the bulge of bar every end and secured thereat. Thread heads are screwed on thread with interference fit. Internal and external thread is made on one thread head. Only internal thread is made on other head. Flats are made at side surfaces of thread heads. Used thrust ring has conical bore. Said thrust ring can be fitted in place at press in cold of hot state.

EFFECT: higher reliability, lower labour input.

6 cl, 4 dwg

FIELD: oil and gas industry.

SUBSTANCE: rope-type sucker rod transferring reciprocating motion and longitudinal force from the tophead to the actuator of the oil well pump consists of the rod body and head with connecting thread. At that a locked-coil rope with Z-, X- and O-wires is used as the rod body, while an attachment ensuring equal load to all rope wires is used as the rod head. Besides, the rope-type sucker rod is designed to transfer reciprocating motion from the tophead to the actuator of the oil well pump, at that attachments are equipped with a knot preventing rope turning in the attachment.

EFFECT: improvement of operational efficiency for rope-type sucker rods during operation of oil directional wells and oil wells with offshoots as well as during production of high-viscous oil.

5 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to couplers of pump rods for screw pump drive. Said coupler comprises captive nut with inner ledge on one side and internal thread on opposite side, rod body, captive nut and locating nut. Rod body has external thread, wedge-like slit and wedge-like ledge at opposite end. Note here that captive nut and guide captive sleeve are fitted on the rod of wedge-like ledge, locating nut being fitted on the body to contact with its inner ledge. Wedge-like ledge can be arranged in wedge-like slot of adjacent rod at its coupling with the guide captive sleeve.

EFFECT: higher torsion strength and breaking point.

5 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: screw joint elements are subjected to local elastic and elastoplastic deformations. Elastoplastic sealing element is composed of metal ring gasket (4) to be arranged between the ends of casing pipes (1, 2). Gasket is pre-cooled in refrigerator, for example, in liquid nitrogen and, then, fitted in its proper place. Pipes (1, 2) are quickly screwed off to prevent fast heating of gasket (4). Note here that said gasket (4) gets in constricted position in lengthwise axis of casing. Note here that at heating said gasket expands to fill the gap between the surfaces of its location but stays contracted like a spring since the gap between surfaces being sealed inhibit its complete expansion.

EFFECT: tightness of casing thread joints at whatever loads, longer life.

4 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: after drilling parent hole and its anchoring to design depth, bore is expanded with cutting of casing interval of parent hole to make top and bottom parts of said parent hole. Expansion interval is cemented to drill the cement in expansion interval thereafter. Extra holes are drilled to run bearing plate which is to be oriented, fitted in place and tightly fixed by expansion so that plate side branches are located in appropriate extra holes. Bearing plate comprises two tightly connected hollow elements, one a bit longer than another one, that can expand. Note here that shorter element is composed of the first branch tor extra hole. Note also that longer element has at least one extra branch, similar to the first one. Said branches are located at different levers of longer element and are bidirectional elements.

EFFECT: possibility to construct multi-bottom wells from cased wells.

2 cl, 6 dwg

FIELD: mining.

SUBSTANCE: drill pipe includes a polymer basic structure formed of bismaleimide polymer reinforced with fibres; and a hydrophobic coating including a maleimide complex and chemically connected to polymer basic structure. The coating forms a covalent link with polymer basic structure. A drill pipe erection method involves erection of the basic structure of the drill pipe from polymer material; production of hydrophobic coating; and creation of covalent chemical link between the coating and the basic structure. The coating for application onto the drill pipe is made of many layers, at least one of which is made from the material containing a chemical reagent chosen for a reaction in presence of borehole fluid media that have destructive nature in relation to polymer material.

EFFECT: providing formation of a coating on the drill pipe, which is adequately connected to the below-lying basic structure of the polymer material so that it can withstand corrosive medium present in the borehole application.

30 cl, 10 dwg

FIELD: oil and gas industry.

SUBSTANCE: connection contains mal and female elements with buttress conical trapezoidal threads and conical sealing surfaces and stop end surfaces at the ends of elements. Slope angle for bearing face of thread profile is from -4 up to +5, slope angle of embedded face is 10-24, taper ratio is 1:16. Tops and embedded faces of thread profile at connection screwing generate gaps in-between with width of 0.05-0.15 mm. Thread profiles of the male and female elements at the area of embedded face and top convergence is made rounded. At that radii of rounding are different for male and female elements. Stop end surfaces have angle of slope of 10-20 to normal line of the thread axial line. Slope angle of sealing surface of the male element is 13-18 to normal line of the thread axial line. Slope angle of sealing surface of the female element is 8-12. At the female element at the area of thread tailing there is a circular groove (12) that forma cavity covering the first one and a half thread turns at the male element. At the tailing area of sealing surface and stop end surface there is a circular groove (14). The convergence area of sealing surface and stop end surface (14) of the female element and convergence area of sealing surface and tailing thread area of the male element are made rounded.

EFFECT: high leaktightness at impact of significant mechanical loads, wear resistance at multiple screwing and unscrewing and operation.

22 cl, 1 ex, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes coaxial placement of inner tube with insulation, gas absorbers and centring skids in outer tube. Outer tube is equipped with fluid-tight valve that provides vacuum 10-4-10-3 mm Hg in tubular annulus. Outer and inner tubes are connected through steel linings by means of their welding to pipes by vacuum-tight seams. To outer tube linings are welded at the point of male screw placements at ends within area under the section from the first turn till base plane of thread. Thermal treatment of vacuum-tight seams provides improvement of their plasticity. Heating of inner and outer tube is made stage by stage up to final temperature of 350-450C. At each stage of heating in tubular annulus vacuum of 10-4-10-3 mm Hg is created. Male screws are made at the ends of outer tube after mechanical treatment of vacuum-tight seams.

EFFECT: reducing heat losses at heat carrier passage through tube string, increasing operational reliability of string and efficiency of string section assembly.

2 cl, 2 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: spring centraliser to be automatically locked at casing column consists of centering plates and two seamless rings. Ends of said seamless rings are jointed by weld seam. Note here that lower ring has special inclined two-six pockets (depending upon centraliser size). Said inclined pockets accommodate two forged rolls coupled by torsion spring locked by retainer in transport position. Centraliser locking in rolls displacement by the spring in wedge pocket after removal of retainer is effected by the principle of overrunning coupling. Wedge pocket is formed by centraliser ring and casing column. One roll lock centraliser against downward displacement while another one inhibits upward displacement.

EFFECT: perfected design.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: method for application of protective coating to inner and outer surface of pipes includes running-in of device for application of the coating into a pipe string, melting of coating and its application to pipe walls. Protective coating is applied to outer surface of couplings, up to three couplings, by means of device for application of the coating to outer surface. Protective coating is applied to outer surface of couplings is applied during running-in into pipe string. Application of protective coating to inner surface of several tubing strings is made at ground level by the device for application of the coating to inner surface. Then coating is straightened by a calibrating unit. The device for application of protective coating to inner surface of pipes includes container for melted compound, heating elements, piston and calibrating unit. The calibrating unit is flexible and there are springs inside it. Springs allows changing outer diameter of the calibrating unit when pipe diameter changes. Pressure sensors, temperature sensors, spotlights and web-cameras are installed at the device in order to control process of coating application.

EFFECT: invention allows increasing service life of downwhole equipment, increasing technological effectiveness and quality of application processes, increasing safety and reliability of the equipment.

FIELD: oil extractive industry.

SUBSTANCE: device has inner and outer pipes, placed coaxially with forming of ring-shaped space between them. Ring-shaped space is pressurized by vacuum seams, thermo-isolation is placed therein and vacuum is formed, on both sides of outer pipe thread is made, on one end thereof sleeve is screwed with isolating bushing. Vacuum seams are made at even spaces from ends of outer pipe, calculated from formula L=K·β, where L - distance between vacuum seam and end of outer pipe, mm; K - number of predicted maintenances of threads of thermo-isolated pipe; β - value of shortening of thermo-isolated pipe after single thread maintenance, mm. Also described is another variant of thermo-isolated pipe, wherein vacuum seams are made at different spaces from ends of outer pipe. Distance on side of sleeve is calculated from formula: LM=KM·β, where LM - distance between vacuum seam and end of sleeve end of outer pipe, mm, KM - number of predicted maintenances of thread of sleeve end of thermo-isolated pipe; β - value of shortening of thermo-isolated pipe after single thread maintenance, mm; and on nipple side space is calculated from formula: LH=KH·β, where LH - distance between vacuum seam and end of nipple end of outer pipe, mm; KH - amount of predicted maintenances of thread of nipple end of thermo-isolated pipe, while KM<KH.

EFFECT: higher efficiency.

2 cl, 1 dwg

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