Face assembly localizer

FIELD: drilling equipment.

SUBSTANCE: device has body, shaft, mounted in body on bearings, drive made in form of hollow spring-loaded rod with outer slits, movement converter made in form of outer bushing with spiral grooves, interacting with response shelves of inner hollow bushing, piston with compaction, spring-loaded ring, provided with slits and toothed half-sleeve. Outer bushing of movement converter is connected to body, and inner one is connected to piston and provided with toothed half-sleeve, interacting with toothed half-sleeve of spring-loaded rod. Rod spring is supported by body via stop ball bearing. Spring-loaded ring, interacting to response half-sleeve of shaft by toothed half-sleeve, is engaged with body by slits.

EFFECT: higher reliability.

5 dwg

 

The invention relates to a drilling technique and can be used in drilling for suitability wells and sidetracks with the use of coiled tubing technology for downhole orientation deviating composition, in particular downhole motor standoff, in the desired azimuthal direction.

In the practice of drilling known similar devices with both electric and hydraulic. Device with electric drive is more functional, but they can be used mainly in coiled tubing technology, when in a continuous pipe can easily accommodate cable for energy supply. Device with hydraulic control of flow of washing fluid is more versatile, they can be used when drilling on a drill pipe of small diameter (89 mm) at great depths, when the downhole control layout from the surface is difficult (TECHNOLOGI UPDATE "Sperry-San", winter 1995).

The closest technical solution known is orientator drill string, comprising a housing, a shaft mounted on bearings in the housing, the actuator is made in the form of a hollow spring-loaded rod with external slots, transducer movement, made in the form of the outer sleeve with spiral grooves that interact with mating protrusions of the inner hollow sleeve, the Porsche is new with seal spring-loaded ring, provided with slots and toothed coupling (U.S. Pat. U.S. No. 5775444, 175-322, 1998).

A disadvantage of the known device is the low switching speed, especially return of the actuator to its original position, to accelerate which sometimes requires a short pulse of reverse circulation, high contact stresses between contacting elements of the transducer movement and slotted mating shaft when the transmission torque reaction downhole motor, part of the downhole Assembly.

The objective of the invention is the reliability enhancement and acceleration of the operation of the device by reducing stresses between contacting elements when working stroke and the transmission of reactive torque when drilling.

The problem is solved due to the fact that the orientator downhole composition, comprising a housing, a shaft mounted on bearings in the housing, the actuator is made in the form of a hollow spring-loaded rod with external slots, transducer movement, made in the form of the outer sleeve with spiral grooves that interact with mating protrusions of the inner hollow sleeve, piston seal, spring loaded ring with slots and toothed coupling, characterized in that the outer sleeve of the transducer movement is connected to the frame, and the inner is connected with the piston and supply the Jena toothed coupling half, interacting with a toothed coupling spring stem, stem spring rests on the housing through a thrust ball bearing and spring-loaded ring, gear coupling interacting with mating coupling half shaft, slots and connected with a case.

The invention consists in the following.

Due to the fact that the contact elements of the orientator - grooves of the outer sleeve of the transducer movement and the protrusions of the inner sleeve inverter movement interact as much as possible for a given diameter the radius, providing minimal contact voltage during the operating cycle, when drilling the spring-tensioned ring gear coupling interacts with mating coupling half shaft and spline coupled with the body as much as possible for a given diameter the radius, providing minimal contact voltage, and a spring-loaded rod is installed in the housing for the thrust bearing, which ensures an increase in response speed of the orientator.

Figure 1 shows the orientator in longitudinal section, figure 2 shows cross-section a-a passing through the projections of the inner sleeve of the transducer movement, figure 3 shows the B on the outer sleeve of the transducer movement without housing, figure 4 and figure 5 shows a cross section B-b and G-G, passing through the front connection rod and the shaft, spring ring and the housing.

The orientator downhole composition includes a housing 1, a shaft 2 mounted in bearings 3 in the casing, the actuator is made in the form of a hollow spring-loaded rod with 4 external slots 5 and the toothed coupling half 6, the transducer movement, made in the form of the outer sleeve 7 with spiral grooves 8 (see figure 3), which interacts with mating protrusions 9 of the inner hollow sleeve 10, fitted with a toothed coupling half 11, coupled with the corresponding coupling half 6 of the piston rod, the piston 12 with the seal 13, the spring-tensioned ring 14, provided with slots 15 (see figure 5) and the gear coupling 16 concatenated with slots 18 housing and gear coupling shaft 19.

All teeth have a saw tooth shape is designed so that the leading coupling can transmit torque to the right looking from the leading coupling, and the left can turn freely relative to the driven coupling.

The teeth of the coupling permanently coupled, spring-loaded rod is backed by a spring 17 in the axial bearing 20 mounted in the housing. The cavity below the piston hydraulically communicates with the annular space to equalize the pressure in the well and the internal cavity of the orientator.

The operation of the device is as follows: case 1 is connected to the drillstring, in particular with the coiled tubing and the shaft 2 with the BHA, including the General engine-the whipstock to drill with inclination angle in a given direction and telemetry system for monitoring the parameters of the trajectory of the wellbore and standoff position.

When you enable the circulation of drilling fluid through the drill string enters the orientator and through the inner sleeve of the transducer movement of the shaft 4 and the shaft 2 and is supplied to the engine is the whipstock CBNC. As the working pressure differential on the engine piston 12 together with the inner sleeve 10 of the transducer movement starts to move down. While the protrusions 9 of the inner sleeve 10 of the transducer movement, interacting with spiral grooves 8 of the outer sleeve 7 of the transducer movement, turn the inner sleeve 10 of the transducer movement and its associated shaft 4 and the shaft 2 to the right.

When the shaft of the interacting sawtooth teeth of the coupling halves 16 and 19 of the press ring 14 and allow you to rotate the shaft at a given angle determined by the stroke of the rod 4 and the angle of the spiral grooves 8 of the outer sleeve 7 of the transducer movement.

After the start of the drilling process reactive torque arising on the motor housing of the diverter, is transmitted to the shaft 2, through the teeth of the coupling 19 and 16 on the spring-loaded ring 14 through the slots 18 and 15 on the housing 1 and then to the drill pipe.

When the flow decreases circulation dramatically decreases the pressure difference on the BHA, consequently reducing the force acting on the piston 12, and a return spring 17 begins to move up the stem 4 and the associated DNAs is Rennie sleeve 10 of the transducer movement. The protrusions 9 of the sleeve 10 of the transducer movement, interacting with the grooves 8 of the outer sleeve 7 of the transducer movement, try to rotate the sleeve 10 of the transducer movement and its associated shaft 4 and the shaft 2 to the left, but the interaction of the teeth of the coupling shaft 19 and the spring ring 14 prevents rotation of the shaft and rod. As a result of interacting sawtooth teeth of the coupling sleeve 6 and 11 of the press rod 4 and allow you to rotate the inner sleeve 10 of the transducer movement to the left and to occupy its original position. With increased flow of washing fluid, the cycle repeats and the shaft is rotated again at a specified angle.

The advantage of the inventive device in comparison with the known is the fact that the contact elements in the orientator interact with minimal stress. The operation of these elements in the environment of drilling fluid containing abrasive particles, this circumstance leads to a significant increase in the durability and reliability of the orientator.

The orientator downhole composition, comprising a housing, a shaft mounted on bearings in the housing, the actuator is made in the form of a hollow spring-loaded rod with external slots, transducer movement, made in the form of the outer sleeve with spiral grooves that interact with mating protrusions of the inner hollow sleeve, the piston is sealed, spring-loaded ring, provided with slots and toothed coupling, characterized in that the outer sleeve of the transducer movement is connected to the frame, and the inner is connected with the piston and provided with a toothed coupling, which interacts with a toothed coupling spring stem, stem spring rests on the housing through a thrust ball bearing and spring-loaded ring, gear coupling interacting with mating coupling half shaft, slots and connected with a case.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: device has two bodies, laced between drilling pipes and rock-destroying element, drilling assembly changing assembly, mounted between bodies. Bodies are placed at a space between each other and interconnected moveably by drill angle changing assembly, made in form of bushing, inside of which a rubber bushing is placed, passing through inner hollows of bodies. Rubber bushing is provided with compacting element and elements for excluding its deformation. Value of space is selected from condition providing for drilling along planned trajectory, providing for exit from slanting portion into horizontal. Elements for excluding deformation of rubber bushing are made in form of steel rings. Fixing elements are made in form of two pairs of coaxial stops in lower and upper bodies respectively at angle of 90 to each other.

EFFECT: higher productiveness.

2 cl, 1 ex, 1 dwg

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Hydraulic diverter // 2233374
The invention relates to the drilling technique, namely the hydraulic downhole diverters, and can be used for the curvature of the wellbore in the desired direction

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The invention relates to mining, in particular, to means of drilling at sidetrack in the case of an artificial curvature wells

The invention relates to the drilling technique, namely hardware to install the whipstock in the wellbore

FIELD: mining industry.

SUBSTANCE: device has two bodies, laced between drilling pipes and rock-destroying element, drilling assembly changing assembly, mounted between bodies. Bodies are placed at a space between each other and interconnected moveably by drill angle changing assembly, made in form of bushing, inside of which a rubber bushing is placed, passing through inner hollows of bodies. Rubber bushing is provided with compacting element and elements for excluding its deformation. Value of space is selected from condition providing for drilling along planned trajectory, providing for exit from slanting portion into horizontal. Elements for excluding deformation of rubber bushing are made in form of steel rings. Fixing elements are made in form of two pairs of coaxial stops in lower and upper bodies respectively at angle of 90 to each other.

EFFECT: higher productiveness.

2 cl, 1 ex, 1 dwg

FIELD: drilling equipment.

SUBSTANCE: device has body, shaft, mounted in body on bearings, drive made in form of hollow spring-loaded rod with outer slits, movement converter made in form of outer bushing with spiral grooves, interacting with response shelves of inner hollow bushing, piston with compaction, spring-loaded ring, provided with slits and toothed half-sleeve. Outer bushing of movement converter is connected to body, and inner one is connected to piston and provided with toothed half-sleeve, interacting with toothed half-sleeve of spring-loaded rod. Rod spring is supported by body via stop ball bearing. Spring-loaded ring, interacting to response half-sleeve of shaft by toothed half-sleeve, is engaged with body by slits.

EFFECT: higher reliability.

5 dwg

Drilling tool // 2246603

FIELD: mining industry.

SUBSTANCE: drilling toll has body with thread and inner washing channel, as well as matrix, contacting pin by its inner surface and having outer end spherical surface, provided with rock-destroying means. Pin in body is mounted coaxially. Outer end spherical surface of matrix with rock-destroying means is made with diameter equal to outer diameter of drilling toll, and inner surface of matrix and outer surface of pin are made spherical, centers of which coincide with center of outer end spherical surface of matrix. Between inner surface of matrix and spherical pin, balls are mounted in recesses of contact surfaces. Recesses for balls made in matrix are elongated in vertical directions from ball center for distance L=(R+r)tgΨ, where R - radius of pin spherical outer surface, m; r - ball radius, m; Ψ - maximally possible angle of matrix rotation in vertical plane, in degrees.

EFFECT: higher reliability.

6 dwg

FIELD: oil and gas industry.

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EFFECT: higher reliability, higher efficiency.

7 cl, 5 dwg

FIELD: oil production, particularly for drilling oil and gas well cluster.

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EFFECT: reduced number of round-trip operations for well cluster forming under the action of liquid head and, as a result, reduced costs.

1 dwg

FIELD: drilling equipment, particularly for directional drilling, namely control devices adapted to control angle and reactive moment.

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EFFECT: increased stability and angle of gerotor engine deflection and increased accuracy of non-uniform well bottom zone penetration.

2 cl, 10 dwg

FIELD: oil and gas well drilling equipment with the use of hydraulic downhole motors.

SUBSTANCE: support-and-centering member is made as metal hub with blades connected to spindle connector. Spindle connector has support cone formed on outer surface thereof and adapted to provide rigid connection with metal hub from inner surface thereof. Support cone of the connector is formed from side of conical thread connecting spindle body with connector. Spindle connector has splines to connect thereof with metal hub. Metal hub is pressed with pressing cone, retaining washer and nut from another side thereof. Metal hub may be installed concentrically or eccentrically to spindle connector axis or outer surface thereof may be differently shaped and arranged eccentrically, concentrically or obliquely with respect to spindle connector axis.

EFFECT: reduced costs of spindle usage.

5 dwg

FIELD: drilling equipment, particularly for deflecting the direction of boreholes.

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3 cl, 2 dwg

FIELD: well construction, particularly to built cluster wells.

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4 dwg, 1 ex

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EFFECT: reduced number of trips.

2 dwg

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