Device for screwing together and unscrewing drilling pipe members

FIELD: drilling equipment, particularly devices adapted to lower and lift drill string.

SUBSTANCE: device includes connection parts formed on drilling pipe sections, for instance as sleeve or male half of tool joint with tool-joint threads, rotary key for above members and supplementary means. Supplementary means have cavities with sensors and is built in drilling string. The means are also provided with detachable reinforcing clamp made as bails connected one to another. The bails are arch-shaped and plate-type and are pivotally connected one to another. Inner bail surfaces have extensions inserted in grooves formed in supplementary means so that groove dimensions correspond to that of bail extensions.

EFFECT: reduced size of lock connection and increased free space for measuring tools installation.

3 cl, 4 dwg

 

The invention relates to drilling equipment, and in particular to devices for lowering and lifting the drill string.

Multiparameter geophysical measurement system and process data in the process of drilling oil and gas wells operate in the drill string and contain several separate blocks, matched with the drill pipe by means of interlock consisting of a nipple-coupling part.

Known, for example, a block diagram of a system "Slaughter" contains up to 6 separate blocks connected to the drillstring using the locking parts. (Molchanov A.A. "geophysical Measurement and process parameters in the process of drilling wells", M., "Nedra", 1983, str).

The known construction of the apparatus for well logging during drilling, for example, contains several adapters between the drill pipes connected to them also locking parts (Ed. Mon. The USSR № 1059522, G 01 V 3/18 "Device for well logging while drilling").

Lock the drill string is a nipple and coupling parts with mating threads.

For screwing drill pipe and its components when run into the well, and unscrewing when lifting use a powerful drilling machine keys (Medvedev, NV, Glanz A.A., Grigorevskiy A.S. "Handbook of mechanics on geologies eocnomy drilling", M., "Nedra", 1973, str).

The smallest size body length spigot and socket part of the castle connection with the development of the elements of the drill string is selected, generally, from the conditions of the possibility of capture drilling machine keys, repair options locking thread and transfer the necessary time screwing over 500 kgf·m), so in practice the length of the body of the nipple and coupling of the lock should be at least 160 mm

A device for measuring geophysical and technological parameters in the drilling process, containing a drill string, casing, power supply, sensor modules, the module transmitting device, electric divider, made in the form of separate sub installed directly above the downhole motor and bit module, connected with the shaft of the downhole motor and mounted above the bit (utility model No. 27839, E 21 In 47/12, bull. No. 5, 2003). In this unit additional equipment (sub, bit module) is installed on the spindle shaft of the downhole motor.

Increasing the length of the spindle shaft leads to an increase in console movable part and as a consequence increase the bending moment that may be in the process of creating an axial load on the bit to lead to the scrapping of the shaft. Therefore, the length of the additional equipment, ustanavlivaetsya shaft, should be minimal, but sufficient to accommodate the necessary equipment and locking elements for the connection. The most appropriate to reduce donovich size additional equipment installed in the layout of the drilling tool, is a lock part.

The proposed device allows to reduce the length of the body interlocking connection of the captured machine keys up to 70 mm, thereby at the same optimal length of the additional equipment included in the drill string, to leave more space for placement of devices.

The objective is achieved in that the device for screwing and unscrewing of the elements of the drill pipe containing the connecting part of the drill pipe, for example, in the form of a coupling or nipple with locking threads, turning the key for these items, as well as additional equipment, having a cavity with sensors included in a drill string equipped with a removable reinforcing collar in the form of brackets, interconnected, and the bracket is made arcuate, plate, connected by a hinge, the inner surface of the brackets are made with flanges installed in grooves made in the additional equipment that has a cavity with sensors, and the dimensions of the grooves correspond to the tabs of the brackets.

In addition, the decree is " a device the hinge brackets are made with removable fingers grips, and the tabs are evenly spaced along the inner circumference of the staples in the amount of not less than 3 defined by providing the necessary time screwing and unscrewing of the elements of the drill pipe.

Figure 1 presents a General view of the removable brackets. Two massive arched plate 1 are interconnected pivotally by pins 2 with grippers 3. On the inner surface of the brackets made the protrusions 4, spaced evenly in the bottom of the brackets around the number which can be between 3 and above.

Figure 2-3 shows the location of the brackets on the strand elements of the tubes, which illustrates the beneficial properties of the device, figure 4 - cross section a-a of figure 3. Figure 2 - shows the optional equipment 5 cavities B (where are the sensors for measuring parameters at the bottom), United through joint thread G, and connected with him drill pipe 6.

Oral B can not be located below the distance L equal to 160 mm, which significantly reduces the useful volume of (B) to place the sensors.

Figure 3 shows additional equipment 5 and the drill pipe 6. Enclosures optional equipment 5 installed bracket 1, which their projections 4 are included in the corresponding slots of the additional equipment 5 and fixed fingers with 2 clamps 3.

Length l1- new additional the additional volume of the cavities B, where you can place additional sensors, or on the amount you can reduce the length of the device.

L1- the new length of the locking connection, but through the use of brackets required length L=160 mm to capture the machine key is stored.

Navorachivaya and loosening locking connection is made as follows. Bracket 1 their projections 4 are installed in grooves made in the additional equipment 5. Arcuate halves of the brackets are connected by a hinge with pins 2 with grippers 3. Machine key is applied to the brackets 1 and using it is screwing (unscrewing) of the elements of the drill string. Thus the bracket 1 protects cavity with sensors B from squeezing machine key of the walls of the drill pipe.

Projections are made based transmission of torque necessary for the subsequent fastening of the locking connection.

1. Device for screwing and unscrewing of the elements of the drill pipe containing the connecting part of the drill pipe, for example, in the form of a coupling or nipple with locking threads, turning the key for these items, as well as additional equipment, having a cavity with sensors included in a drill string, wherein it is provided with a removable reinforcing collar in the form of brackets, interconnected, p. and this bracket is made arcuate, plate, connected by a hinge, the inner surface of the brackets are made with flanges installed in grooves made in the additional equipment that has a cavity with sensors, and the dimensions of the slots correspond to the tabs of the brackets.

2. The device according to claim 1, characterized in that the hinge brackets are made with removable fingers with seizures.

3. The device according to claim 1, characterized in that the protrusions are evenly spaced along the inner circumference of the staples in the amount of not less than 3 defined by providing the necessary time screwing and unscrewing of the elements of the drill pipe.



 

Same patents:

FIELD: drilling oil and gas wells; devices for screwing and unscrewing casing pipes.

SUBSTANCE: proposed wrench includes power unit in form of electric motor, hydraulic pump with constant power regulator and tank filled with working medium. Actuating mechanism includes hydraulic motor, gearbox, rotor with pipe grip, movable doors with locks and hydraulic distributor. Constant power regulator is provided with delay unit in form of prestressed spring. Axial-flow piston-type pump is used as hydraulic pump; it is provided with movable unit with spring and its pistons are arranged in inclined position. Constant power regulator inlet is connected with main hydraulic line and its outlet is connected with cylindrical movable unit of hydraulic pump. Constant power regulator may be switched-off by delay unit. Regulator is switched on when output power of power unit and output of hydraulic pump reach the magnitudes preset by the following formulae: where N, are respectively output power and normal output power of power unit; Q are respectively output and nominal output of hydraulic pump; P are respectively pressure and nominal pressure of working medium in hydraulic line, k is proportionality factor equal to 1.

EFFECT: enhanced efficiency, reduced wear; increased universality factor.

4 dwg

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Mechanical key // 2224083
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FIELD: drilling oil and gas wells; devices for screwing and unscrewing casing pipes.

SUBSTANCE: proposed wrench includes power unit in form of electric motor, hydraulic pump with constant power regulator and tank filled with working medium. Actuating mechanism includes hydraulic motor, gearbox, rotor with pipe grip, movable doors with locks and hydraulic distributor. Constant power regulator is provided with delay unit in form of prestressed spring. Axial-flow piston-type pump is used as hydraulic pump; it is provided with movable unit with spring and its pistons are arranged in inclined position. Constant power regulator inlet is connected with main hydraulic line and its outlet is connected with cylindrical movable unit of hydraulic pump. Constant power regulator may be switched-off by delay unit. Regulator is switched on when output power of power unit and output of hydraulic pump reach the magnitudes preset by the following formulae: where N, are respectively output power and normal output power of power unit; Q are respectively output and nominal output of hydraulic pump; P are respectively pressure and nominal pressure of working medium in hydraulic line, k is proportionality factor equal to 1.

EFFECT: enhanced efficiency, reduced wear; increased universality factor.

4 dwg

FIELD: drilling equipment, particularly devices adapted to lower and lift drill string.

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EFFECT: reduced size of lock connection and increased free space for measuring tools installation.

3 cl, 4 dwg

FIELD: mechanical engineering, particularly connecting or disconnecting drilling and casing pipe couplings or joints.

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3 cl, 6 dwg

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2 cl, 3 dwg

FIELD: mechanical engineering, particularly drilling string and casing pipe connection equipment.

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2 cl, 2 dwg

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FIELD: tubular keys.

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5 dwg

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4 cl, 7 dwg

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4 cl, 2 dwg

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