Device for stabilizing and holding drill string

FIELD: oil and gas industry.

SUBSTANCE: device for stabilizing and holding the drill string comprises a housing, levers hingedly mounted on it each on its axis arms with clamping surrounding surfaces formed thereon, coupled to each other by gear sectors coaxial to the hinges, enabling the symmetrical rotation of the levers in opposite directions. Gearing is made double-row. The teeth of each of the paired rows are mutually displaced along the circumference by half the circumferential pitch.

EFFECT: increase in manufacturability of production.

2 cl, 4 dwg

 



 

Same patents:

FIELD: mining.

SUBSTANCE: device using the centraliser from drilling steel, which moves along run beam of drilling machine, and containing feed cylinder for movement of drilling machine in the drilling direction and backwards, at least one steering wheel rigidly installed relative to feed cylinder and elastic feed member moving around the wheel and connected to drilling machine and to run beam, centraliser from drilling steel installed with possibility of being moved on run beam and rigidly relative to feed cylinder in longitudinal direction of run beam and containing central hole for the drilling rod, feedthrough hole on the side of central hole for movement of drilling rod to central hole and from the latter, and device for closing the feedthrough hole during drilling process, and channels for fluid medium under pressure for supply of fluid medium under pressure to and from fluid medium chambers under pressure of feed cylinder. Centraliser contains actuator actuated with fluid medium under pressure for closing of feedthrough hole, channel for fluid medium under pressure is connected between feed cylinder chamber, to which fluid medium under pressure is supplied during drilling to move the drilling machine in the drilling direction, and actuator of centraliser so that pressure of fluid medium under pressure makes the actuator close the feedthrough hole.

EFFECT: automatic closing of centraliser hole.

14 cl, 4 dwg

FIELD: mining, particularly to construct horizontal or inclined wells by rotary drilling in fissured rock with the use of rotary drilling rid and adapted to be used during exploration drilling in pits and mines for iron-ore mining.

SUBSTANCE: prior-art rig is provided with artificial head comprising a number of sections secured one to another and fastened to frame pivotally connected to support frame of drilling rig. The rig also has throttle located at drainage cavity of cylinder to provide drilling rig installation outside dangerous zone so that the drilling rig may be displaced in horizontal plane from drilling axis due to artificial head usage. The artificial head is installed on ledge extending from drilling rid to face along drilling axis and is assembled out of dangerous zone. The artificial head is provided with head string. Drilling assembly passes through the head string. Predrilling is performed in drilling regime at minimal advance speed. The advance speed is controlled by throttling of discharge cavity of advancing cylinder and at high rotational frequency for depth exceeding fissured rock zone thickness.

EFFECT: increased safety and productivity of horizontal or inclined well construction, reduced labor inputs for equipment movement and enhanced technological effectiveness of drilling operation, provision of drilling direction control and drilling rig arrangement at safe distance from slope, increased well construction capacity, extended functional capabilities.

2 cl, 4 dwg, 1 ex

Drilling rig // 2259456

FIELD: well drilling equipment, particularly light or superlight drilling rigs.

SUBSTANCE: drilling rig includes frame and guiding means pivotally connected to frame, rotary supplying system arranged on guiding means and anchoring members. Drilling rig is provided with support member displaceable relative guiding means and anchoring members secured to the support member through clamps. Guiding means has clamps of anchor members. Secured to lower side of support member is grouser. In the case of inclined well boring drilling rig is provided with drill steel support. Drill steel support has pins, tension bars secured to pins by clamps so that tension bars may to perform adjusting longitudinal movement and adjusting rotation about the pins. Another tension bar ends are provided with clamps. During inclined well boring frame extensions secured to the frame are used if required. Guiding means and support member have means for alternate drill steel support fixation.

EFFECT: reduced dynamic loads applied to drilling tool, increased drilling rig stability and increased drilling rig weight utilization ratio.

8 dwg

FIELD: mining industry.

SUBSTANCE: device has pressing blocks of saddle-like shape, each of which is spring-loaded relatively to rotation levers with axes via springs and is freely mounted at rotation levers with their possible rotation during wear of spiral of worm working tool along diameter, without displacement of the latter from drilling axis, for certain angle around fixing axes for pressing blocks, placed in parallel to longitudinal axis of drilling device, levers rotating drive, centering rollers, fixed at ends of pressing blocks by axes in parallel to longitudinal axis of drilling device. At ends of pressing blocks grooves are made, radially directed to longitudinal axis of drilling device, wherein resilient inserts are placed, pressing axes of centering rollers in direction of longitudinal axis of drilling device. Axes of centering rollers are made with possible displacement along grooves. Rigidity of springs of pressing blocks is not greater than rigidity of resilient inserts.

EFFECT: higher efficiency.

3 dwg

The invention relates to mining, namely sabumnim devices for machines with a screw working body

The invention relates to installations for trenchless laying of pipes in the ground through artificial and natural obstacles with the use of the borehole expanders

Swivel wrench // 2532118

FIELD: mining.

SUBSTANCE: swivel wrench includes a housing with a handle and a throat for a drilling string. The swivel wrench housing throat is designed with at least one side-pocket. Opposite walls of the pocket are made according to sizes of pipes slots and are meant for the pipes retention in an operating position. The pocket length is equal to at least the drilling string diameter.

EFFECT: improving safety during run-in-hole / put-out-of-hole operations.

2 cl, 2 dwg

Skid yoke // 2521113

FIELD: mining.

SUBSTANCE: skid yoke comprises body with handle and mouth for drill string. It differs from known designs in that said body has channels made on both sides of the mouth, parallel with its sidewalls and arc-like slot at its top end connected with one channel of the body. Note here that said yoke incorporates L-like rod retainer to close the retainer case mouth. Retainer crosswise part is secured at one of body channels to turn thereabout. Opposite end of said retainer is furnished with stop arranged in working position at another channel of said body. Note here that retainer stop is composed by rod with head, detachable disc and spring arranged between disc opposite faces and lengthwise rod. Retainer crosswise part is furnished with detachable threaded nut while stepped channel in the body will receive the retainer crosswise part. Note also that compression spring is fitted in the cavity formed by walls of stepped channel and threaded nut.

EFFECT: higher safety at round-trip jobs.

3 cl, 3 dwg

Skid yoke // 2521099

FIELD: mining.

SUBSTANCE: skid yoke comprises body with handle and mouth for drill string. It differs from known designs in that said body has intersecting vertical and horizontal channels, the latter being stepped. Note here that yoke has a fork-shape retainer with teeth arranged in the body vertical channels, at outer surface with circular groove. Note also that spring-loaded retainers are arranged in retainer tooth circular grooves at working position. Retainers are composed by balls.

EFFECT: higher safety at round-trip jobs.

2 cl, 2 dwg

Dual string spider // 2517107

FIELD: oil and gas industry.

SUBSTANCE: spider having a body with two vertical through tapered openings consists of two halves pivoting in the horizontal plane and dissymmetric in regard to the joint line and fixed rigidly in a closed position at the front by a stopper made as a rod. It also contains two gripping mechanisms that include four-part slips installed so that they can be moved in the through tapered openings and lever mechanisms interacting pivotally with the slips. The spider is equipped with a mechanism for each gripping mechanism interacting with the lever mechanism. Under the body there is a basis in the form of a plate with the central opening, at the front side up to the central opening there is a through groove in the plate. Over the body there is a cover in the form of a plate with the central opening that consists of two pivoting halves fixed rigidly to the racks of the lower half of the body. The device is equipped with a vertical axis fixed rigidly at the upper plane of the basis at the rear side and connected pivotally to the rear side of the body half, the cover half. At that the spider is fixed by "Open" or "Closed" position regulators for the body half and an open position regulator for the slips. The centres of tapered openings are placed in the joint line of the body by which the tapered openings are divided into semi-openings. Drives of the gripping mechanisms are united with the lever mechanisms and contains coaxial external and internal shafts with fixed rigidly manual handles, levers and consoles with rocker arms mounted opposite to each other at the lateral sides of the body halves, they are mounted so that they can rotate in brackets connected to the lateral sides of the body halves. The drives of the gripping mechanisms also contain detachable rods connected pivotally to the rocker arms; the rods consist of two links connected by the interacting gear racks at each link. Fixation of the links in the connected position is made by a lock in the form of a spring-actuated bushing. At that the rod of the first gripping mechanism is connected to the rocker arms of the external shafts while the rod of the rear gripping mechanism is connected to the rocker arms of the internal shafts. Parts of each slip are dissymmetric in regard to the joint line of the body; they interact in pairs with one of semi-openings in the through tapered openings of the body. At that both parts of pairs of the front slip are connected in pairs with the rocker arms of the internal shafts and both pairs of the rear slip are connected in pairs with the rocker arms of the external shafts.

EFFECT: serviceability and maintainability, improved operational reliability and safety, expansion of operational functionality.

8 dwg

FIELD: mining.

SUBSTANCE: drilling rod fixing device includes drive cylinder, stock of drive cylinder and rod fixing device. Drilling rod fixing device also includes swivel fork connecting the rod fixing device to drive cylinder stock through support fixed on working member of drilling machine so that when stock of drive cylinder is being extended, fixing device of rod moves by means of swivel fork along drilling rod, and hexagonal hole approaches flattened surfaces of drilling rod, thus fixing it against turning.

EFFECT: reliable fixation against turning and retention of drilling rods during backoff of drilling column; overall dimensions of the device are minimum, and sizes of mine working for such design shall be minimum.

2 dwg

FIELD: oil and gas production.

SUBSTANCE: device for pipe holding in a well comprises a flanged body with an internal narrowed up conical guide, lids spring-assisted upwards and mounted in the conical guide to perform radial and synchronous axial motion. The conical guide represents inserts with internal conical surfaces equispaced within the internal cylindrical surface of the body to be fixed and pulled out. Each lid is inserted into the coupled insert to perform longitudinal motion in relation to its internal conical surface. The lids are spring-assisted upwards in relation to each insert. The lid is inserted into the coupled insert by a T-joint or dovetail, while the inserts and the body are interconnected by the T-joint or dovetail. Along their external surface, the inserts are provided with cross-section samples, and the body on its internal surface has tangential holes matched with said samples wherein a pin interacting with the insert samples is mounted.

EFFECT: creation of a simple, reliable and cheap design of the device.

2 cl, 2 dwg

Slip // 2260668

FIELD: oil production equipment, particularly means for performing tripping processes under increased pressure, for thawing frozen wells and hydrate blocks inside wells.

SUBSTANCE: slip comprises body with conical boring in upper part thereof. Arranged in the boring are wedges having grooves in upper outer parts thereof. Ring-like tensioning springs are located in wedge grooves. Borings are formed in upper inner wedge parts opposite to the grooves.

EFFECT: increased reliability of automatic pipe gripping during pushing thereof out of well, reduced idle time for wedge change or cleaning, increased service life of the wedges.

2 dwg

FIELD: mining industry.

SUBSTANCE: device has body with external and internal stepped surfaces and axial ring-shaped supports, for, respectively, rotor and for stepped inserts coupled by links, made on upper end with side tracks and stopping clamps, supporting slanting surfaces for wedges with dies, socket for hoisting hook and drive, localizer, leading pipe clamp and crosspiece for chisels. Each axial ring-shaped support of inserts is positioned above ring-shaped support of body, upper end of body is made with faceted aperture for crosspiece for chisels and with grooves for responding shelves of inserts, made on upper step of the latter. Inserts are made with inner cone, positioned between their supporting planes and sharing slanting angle with it, no less than 1:6.

EFFECT: higher reliability, higher personnel safety, higher serviceability.

5 cl, 13 dwg

FIELD: mining industry.

SUBSTANCE: device has pipe catcher in rotor aperture, provided with localizer, inserts, having slanted grooves with supporting planes and wedges mounted in said grooves, connected to drive via supports with holders and guiding boards. Slanted grooves of inserts for wedges along whole length of supporting surfaces are made with side limiting walls, slanted relatively to support planes of inserts, while wedges are mounted with space relatively to side limiting walls of slanting grooves, while width B of lesser base is connected to width C of greater base of groove by relation C ≥ B + (D - Dmin)/√2, where D - diameter of through aperture of localizer, Dmin - minimal outer diameter of caught pipes.

EFFECT: higher reliability, higher personnel safety, higher serviceability.

2 cl, 7 dwg

FIELD: mining industry.

SUBSTANCE: device has body with slit connections to inserts, made with supporting surfaces for wedges with dies, connected to drive via supports with holders and guiding boards, localizer and clamp for leading pipe with conical supporting surface o body and rotary inserts, enveloping facets of leading pipe. Upper portion of body of holder of leading pipe is positioned near upper end of device body and is made of cross-like shape with position of cross-shaped shelves along axes of inserts joint coaxially to rotary inserts, and inserts are made with grooves of matching shape. Cross-shaped shelves in transverse section have shape of two-step wedge with flat vertex, directed downwards, while angle α of wedge near the base is derived from formula α = 2(β±30'), where β - maximal angle of deflection of leading pipe from axis of through aperture of device, and wedge angle near vertex is equal to 30°-40°, while cross-shaped shelves are positioned at the level of slit connections of inserts with device body and with guaranteed space between their lower end and bottom of grooves for them in the inserts.

EFFECT: higher reliability, higher personnel safety, higher serviceability.

4 cl, 9 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes determining length of non-hermetic upper portion of casing column, detaching of defect portion and removing of it from the well. At surface a column for mounting as a replacement of defect one is prepared, on its lower end through threaded sub a pipe connecting device is fixed. On both ends of sub inner threads are made, and inside its body longitudinal channel of two diameters and two shelves are made. Diameter of pass channel of sub is equal to inner diameter of connected pipes, and diameter of second channel is made for outer diameter of pipe, left in the well. Body of pipes connecting device at upper end has outer thread, by which it is screwed into lower threaded end of sub. In the body an inner longitudinal channel for passing of upper end of pipe left in the well is made. In inner longitudinal channel of body from upper end a recess in form of ring recess is made, wherein a compactor is loaded, and on upper side a bushing is mounted. Below ring recess around body circle no less than three slanted cylindrical channels are made, slanted inside towards its longitudinal axis, with output of their lower open ends into inner longitudinal channel of body. Into said channels balls, spring-loaded from above, are loaded. From lower end in the body a guiding end piece is fixed, inner surface of which is made in form of cone, widening downwards. Prepared column is lowered into well as replacement of defect one. By cone of end piece column during lowering is centered in well shaft and by inner longitudinal channel of body of pipes connecting device is placed on upper end of casing column left in well until its end is stopped against inner shelf of sub. At the same time balls in slanted cylindrical channels hold the pipe and rigidly connect body with pipe, preventing their axial displacement and rotation relatively to each other. After that finishing rotation of replaced upper portion of casing column along thread of lower end of sub is performed to provide reliable pressurization of connected pipes ends by a compactor. Behind-column space of replaced upper portion of casing column can be isolated be cementing compounds. Well is equipped for extraction of bed fluid and is launched into operation.

EFFECT: higher safety, higher reliability, simplified operations, lower laboriousness.

2 cl, 1 dwg

FIELD: mining industry.

SUBSTANCE: device has following components, serially placed in faceted aperture of rotor table: body, inserts, wedges with dies, connected to drive via supports with holders and guiding boards, leading pipe clamp and stops with locking gear enveloping guiding boards including latch and spring holder. Upper portion of guiding boards is made with head, which in longitudinal radial plane of device and plane perpendicular to it has, respectively, L and T - shaped shape. Outer surface of guiding boards along their length below the head has convex shape. Upper ends of stops are mounted with possible interaction with lower end of head of guiding boards, and lower ends thereof - with holder of leading pipe and rotor shaft, while inner side wall of stops and latch - to side walls of guiding boards.

EFFECT: higher reliability, higher personnel safety, higher serviceability.

3 cl, 9 dwg

FIELD: mining industry.

SUBSTANCE: device has pipe catcher with inserts and wedges mounted in their slanting grooves, interacting with drive via sub-rotor ring with grooves, supports with holders and guiding boards connected to the latter by fingers, and positioned in through aperture of rotor table. Outer surfaces of guiding boards are made circular and mounted with possible interaction with walls of through aperture of table of rotor. Second portion of guiding boards is made with T-shaped head, connecting fingers of which for connection to holders are provided with spring-loaded holders. Distance between adjacent guiding boards below T-shaped heads is greater than width of wedges, lower portion of guiding boards is made with shelves on inside surfaces, and walls of grooves in sub-rotor ring - with responding recesses.

EFFECT: higher reliability, higher personnel safety, higher serviceability, increased load capacity.

4 cl, 14 dwg

FIELD: mining industry.

SUBSTANCE: device has load-catching gear with coupled inserts having stepped outer surface and facets in upper portion, congruent to inner channel of rotor, wedges, mounted in slanting grooves of inserts and connected to drive via guiding boards and supports with holders. It is provided with detachable links positioned between inner walls of its inserts and also with joining stops, positioned in upper portion of load-catching gear, and localizing and joining stops, positioned in lower portion of load-catching gear, while spaces Δa between side toothed surfaces of wedges along their whole length are determined from formula: Δa ≤ δ = 2·1·tgα/√2, where δ - thickness of walls of caught pipes; 1 - drive of wedges along height from pipe catching position to wedges joining position; α - slant angle of supporting surface of wedge.

EFFECT: higher efficiency, higher reliability, higher personnel safety, broader functional capabilities.

5 cl, 8 dwg

FIELD: mining industry.

SUBSTANCE: device has torque transfer gear, containing body, inserts with slanting grooves made on their inner surface, with flat bottom for wedges and holder for leading pipe, all placed in profiled rotor aperture. Body, inserts with wedges and leading pipe holder are provided with slit connections, placed at same level with profiled rotor aperture with possible mutual interaction, while slit connection between inserts and wedges is formed by flat bottom and side limiting walls of slanting grooves of inserts and matching wedges surface, while width B of wedge contact surface with insert is determined from formula B≥2Mrot·a·tg(α+ϕ)/P·R, where B - width of contact surface of wedge and insert; Mrot - torque, necessary for rotating pipes column; a - distance from outer pipe surface to contact surface of wedge and insert in zone of profiled rotor aperture; α - slanting angle of flat support surface of wedges; ϕ - friction angle on contact surface of wedges and inserts; R - radius of contact surface of wedge and pipe; P - mass of held pipes column.

EFFECT: higher durability, higher reliability, higher personnel safety, lower costs.

4 dwg

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