Amplifying device

 

(57) Abstract:

The invention relates to the drilling technique, namely to the amplifying devices for hydraulic shock mechanisms used to eliminate sticking, simplifies the design and increases the reliability of the device. Amplifier device consists of a body, in the cavity of which is placed a rod connected splined connection with the case. On the outer surface of the stem is made from the upper, middle and lower grooves. On the inner surface of the case, there are three grooves - the top, middle and bottom. The grooves form a camera. The upper and lower pistons mounted on the rod with the possibility of a limited axial movement. The stroke of each piston relative to the rod equal during each of the pistons relative to the housing. When the tension of the drill or it is compacted in the same chamber formed by the secondary grooves, a compression oil and accumulation of potential energy as when you blow in the direction of bottom up and top down. The invention allows to simplify the design, to perform the device is compact and reliable in operation. 1 Il.

The invention relates to the drilling technique, namely to the amplifying device is inoe device, includes housing, shaft, accommodated in the housing with the possibility of joint rotation and axial movement, a piston accommodated in the housing and fastened to a rod and sealed oil chamber formed by the housing, the rod and piston [1].

A disadvantage of the known design is the low efficiency in the elimination of sticking due to the inability to amplify the shock GUM and "top-down" and "bottom-up".

Known amplification unit comprising a housing, a rod placed in the enclosure with the possibility of joint rotation and axial movement, the upper and lower pistons are accommodated in the housing and mounted on the rod, and a sealed oil chamber formed by the housing, the rod and the upper and lower pistons [2].

The disadvantage of an amplifying device design is the complexity and lack of reliability of its work. These deficiencies are determined by the fact that the device has two (upper and lower) work of compression chamber oil, and a third, intermediate chamber located between the working chambers. The height of each working chamber is determined by the compression ratio of the oil, allowing to obtain the necessary shock to HOM e, and the height Prohm is cooking, and the reliability of the device.

An object of the invention is to simplify the design and increase the reliability of the device.

The objective of the invention is achieved in that in the known amplifier device that includes a housing, a rod placed in the enclosure with the possibility of joint rotation and axial movement, the upper and lower pistons are accommodated in the housing and mounted on the rod, and a sealed oil chamber formed by the piston rod, a housing, upper and lower pistons, the upper and lower pistons mounted on the rod with the possibility of a limited axial movement, the stroke of each piston relative to the rod equal during each of the pistons relative to the housing.

The proposed implementation of the device allows you to create only one working chamber of the compression of the oil located in the housing between the upper and lower pistons. One working chamber provides an amplifying device to attack and "bottom-up" and "down".

The upper and lower oil chambers are small and acquire the auxiliary function of storing oil for lubricating the sealing cuff device. The total length of all cells is reduced, which simplifies the manufacture of the device is ez device.

Amplifying device GUM and comprises a cylindrical housing 1, in the cavity of which is placed a rod 2 with the possibility of joint with the body rotation and axial movement by means of the spline 3. The upper end of the rod is threaded for connection with the drill string and the lower end of the housing is threaded for connection with the rod (spindle) GUM (not shown).

On the outer surface of the rod 2 made the top 4, medium 5 and the bottom 6 of the groove, and the inner surface of the housing or three grooves: top 7 average 8 and bottom 9.

The surface of the grooves 4 and 7 form an upper chamber 10, the surface of the grooves 6 and 9 form a lower chamber 11 and the surface of the secondary grooves 5 and 8 - the average working chamber 12. All cells are filled with a special lubricating oil through holes in the enclosure, plugged tubes (not labeled). Cameras 10 and 11 are sealed by the sealing cuff 13. In the chamber 12 is movable relative to the shaft 2 and the housing 1 is placed pistons: the top 14 and bottom 15. Restrains axial movement of the pistons are the ends of the grooves 4, 6, 7, and 9.

Amplifying device operates as follows.

In the borehole during drilling privatepage interval in the Noi, and the lower end of the housing 1 with the stem (spindle) GUM and. Between the amplifying device and GUM ohms and above the amplifying device may be equipped with a set of drill pipes UTL concentration drums efforts.

Upon the occurrence and stuck, for example, rock cutting tool or downhole motor performs the following operations.

For impact drill string in the direction of the bottom-up lifting device of the rig (winch) is produced by the tension of the drill. When the rod 2 together with the lower piston 15 is moved upward relative to the housing 1, compressing the oil in the working chamber 12. When this oil accumulates potential energy. When compressed oil to the calculated value (controlled by the tension force to the drill), the tension of the column stop (brake winch). At this time, the rod GUM and under the influence of tension force amplifying device starts working stroke up to make GUM Ohm punch "bottom-up". Potential energy is compressed in the working chamber 12 of the oil affects the upper piston 14, telling the body 1 and connected with the rod GUM and additional acceleration. Additional speed DV is Alanna pipes above amplifying device is stationary, i.e., the upward movement of the column is extinguished in the amplifying device. The resulting energy impact on tack column is significantly greater than when using only GUM and without amplifying device.

For impact in the direction of "top-down" produce the above-described operations in reverse order.

Instead of tension to the drill produce compression. When this compression oil is also in the chamber 12. Camera 10 and 11 to the main technological process is not involved, and their role is placing a small amount of oil for lubrication of the sealing elements. That is, when the tension of the column or compression of the working oil chamber 12 and one works the oil in it is always in compression, and at the same time is the zero point motion of the upper part of the drill pipe string.

Thus, the compression of the oil and the accumulation of potential energy occurs in one chamber, and when the blow in the direction of bottom-up and top-down, allowing the device is compact, small in length, reliable.

The advantage of the proposed technical solution in comparison with the known compactness is directional as "bottom-up", and "top-down", which increases the reliability of the device.

Sources of informatsii:

1. The shared directory 1994-95 firm "Houston, engineers, INC.", "Drilling and fishing tools - Drilling accelerator "Magnum", S. 4.

2. General catalogue 1994 - 95, the company Husten engineers, INC., "Drilling and fishing tools. Hydraulic accelerator double action, S. 4 (prototype).

An amplifier unit comprising a housing, a rod placed in the enclosure with the possibility of joint rotation and axial movement, the upper and lower pistons are accommodated in the housing and mounted on the rod, and a sealed oil chamber formed by drillings in the housing and the rod, the upper and lower pistons, characterized in that the upper and lower pistons mounted on the rod with the possibility of a limited axial movement, the stroke of each piston relative to the rod equal during each of the pistons relative to the housing.

 

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