Method for drill string disconnection in drilling unit

FIELD: mining.

SUBSTANCE: method for end rod disconnection from the drill string includes end rod rotation relative to the rest of the drill string in the release direction of the screw connection for partial disconnection of the end rod from the drill string and clamping assembly engagement with the partially detached end rod. The clamping assembly comprises a frame and a slide, suspended on the frame with a possibility of axial sliding relative to the frame. The slide includes rod grippers to grip and hold the end rod. The slide is displaced axially on the frame rail using at least one displacement element, to resist the axial displacement of the slide forward or backward relative to the frame. The end rod is additionally rotated in the release direction by means of rod grippers for additional disconnection of the end rod from the drill string and the relative axial position of the slide on the frame is controlled using at least one sensor to determine the release of the screw connection and rod separation from the drill string through slide and end rod axial displacement relative to the frame.

EFFECT: efficient and reliable disconnection of drill string rods.

14 cl, 8 dwg

 



 

Same patents:

FIELD: machine building.

SUBSTANCE: invention relates to the device for vertical directed movement of the tool intended for installation on the derrick floor. The device for the tool directional movement contains the drilling rig that goes from the drilling rig base supported by the derrick floor with possibility of rotation relatively to the first vertical axis. The drilling rig contains the vertical tool guide located at distance from the first vertical axis. The drilling rig rotation relatively to the first vertical axis creates the horizontal work sector of the first tool, and vertical projection of the given work sector touches or crosses the central axis of the through hole in the derrick floor. The drilling rig is installed on the base with possibility of rotation around the second vertical axis that in the horizontal direction is at some distance from the first vertical axis. At that the second drilling rig with the second tool is installed on the derrick floor. The horizontal work sector of the first tool in the vertical projection at least partially overlaps or touches the vertical projection of the horizontal work sector of the second tool.

EFFECT: invention ensures increased productivity and safety of works.

3 cl, 3 dwg

FIELD: mining.

SUBSTANCE: extended bars, such as boring bars and anchor bolts, are stocked into a linear accumulating device for rods, equipped with supplying elements for rods displacement up and down in the accumulating device. Feeding elements comprise helical surfaces, by means of which bars are supported in the accumulating device. The required feeding motion is developed by means of feeding elements rotation around their axis of rotation. The accumulating device for bars additionally comprises a displacement facility, which provides for the possibility of bars displacement from the accumulating device into a boring line or a bolt jointing line, i.e. to the centre and back. The displacement device is additionally equipped with a gripping device for bars gripping.

EFFECT: simplicity, reliability, ease of control and transfer to automatic mode, small dimensions and weight of equipment.

29 cl, 13 dwg

FIELD: mining; physics.

SUBSTANCE: method involves implementation of wire coil under power for generation of magnetic field in proximity to well. Tube segments plurality trips in and out of well, registering of changes in magnetic field caused by trips of connecting couplings of tube segments through magnetic field, with this changes registered by means of a device for measuring a magnetic flow, filtration of thus obtained signal and calculation of number of changes result in obtaining the number of segments of tubes.

EFFECT: automatic inventory of number of sections of cased or production tubes lowered into well.

26 cl, 5 dwg

The invention relates to the drilling technique, namely the device intended to change the drill element in the installation of drilling rock soil

FIELD: process engineering.

SUBSTANCE: invention relates to cluster drilling. Proposed method comprises delivery of assembly units to the sire, arrangement of said assembly units as required, mounting of drilling rig by coupling said assembly units, power tests and disassembly of drilling rig for shipment to customer. Note here that all jobs are performed at the site in definite order with displacement of assembly units in guides erected at said site. Guide length varies with at least three drilling rigs. Said guides are conventionally divided into three zones: Erection, testing and disassembling and shipment zones. Power test bench is arranged at guide mid part. Arrangement of assembly units and parts and assembly of the first drilling rid are performed in assembly zone. First drilling rig assembled, it is displaced in guides to power tests zone to allow assembly of the second drilling rig. Tested first drilling rig is displaced to disassembly and shipment one to displace second drilling rig to power tests zone. Third drilling rig is assembled and, additionally, drilling rig systems are tested for serviceability in whatever said zone.

EFFECT: higher efficiency, accelerated assembly-disassembly.

3 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to drilling units. A tripping complex of a drilling unit comprises a foundation platform surrounding rotor sections and a swivel superadjacent the centre of the rotor sections. The foundation platform comprises a spatial frame with vertical guides. The guides accommodate rollers of balance shafts of telescopic mechanisms. Axle pivots of the balance ends are connected in pairs by short axles. The upper balances of the telescopic mechanisms are connected by a long axle, whereon the swivel is mounted. The foundation platform also comprises hydraulic lift cylinders of the telescopic mechanism sections. Heads of the upper sections of the hydraulic cylinders are connected by an axile, whereon the centres of the upper balances of the lower sections of the telescopic mechanisms are mounted on the axle pivots. The middles of the lower balances of this section on the axle pivots are mounted on an axle fixed on the spatial frame.

EFFECT: invention provides the automatic control of the tripping procedures and enhancing the performance and design specifications of the drilling unit.

6 dwg

Drilling rig // 2539476

FIELD: mining.

SUBSTANCE: drill rig contains the base platform installed around the rotary table sections, and swivel located above the centre of the rotary table sections. On the base platform a spatial frame with vertical guides of the swivel is installed. In the guides the rollers of axles of balancers of telescopic mechanisms are located. The ends of balancers through pivots are connected in pairs by short axles. The upper balancers of telescopic mechanisms are connected by a long axle, on which the swivel is fixed. On the base platform the hydraulic cylinders of lifting sections of telescopic mechanisms are also located. The heads of upper sections of hydraulic cylinders are connected by an axle, on which on pivots the middle parts of the upper balancers of the bottom section of telescopic mechanisms are installed. The middles of the bottom balancers of this section on bearings of swing are installed on the axle fixed on the spatial frame. On the frame vertical guides of the drum are also located, were the drill-pipe stands are located. Above the centre of gravity of the drum the rotating separator is located. The separator is located in the chuck collet on hydrolifts, and the rollers of chuck collet tips are installed in the vertical guide frame.

EFFECT: invention provides automation of trippings and expansion of the operational and layout characteristics of the drill rig.

8 dwg

Drill rod assembler // 2539062

FIELD: process engineering.

SUBSTANCE: invention relates to drill rod assembly for with the help of the head drive part. Proposed assembly comprises support with bar, base element, rotary element, clamp and drive. Bracket is arranged at the case bottom segment or at rig main frame, or at rig main frame carcass. Base element can turn at said bracket. Rotary element is articulated with one base element to retain and drive bar end. Clamp is arranged at rotary element to clamp bar end. Drive is arranged at base element to turn rotary element in direction whereat bar makes rotary element stay or lie. Note here that clamp comprises mixed jaw and moving jaw that make bar end retaining part. Fixed jaw is fitted at rotary element top surface. Moving jaw is connected by articulated shaft with fixed jaw. Said clamp comprises drive cylinder arranged between rotary element and moving element to make the moving jaw turn relative to fixed jaw.

EFFECT: higher efficiency of assembly.

4 cl, 5 dwg

FIELD: transport.

SUBSTANCE: tackle system of drilling rig with drum winch includes winch with service and emergency brakes, drill line hitched over crownblock and tackle block. The tackle system is additionally equipped with device for unwinding loose portion of drill line. The device contains drill line clamp and hand-operated winch, the body of which is connected with tackle system winch frame, and its rope is connected with clamp. Unwinding of drill line loose portion is performed in two steps. In the first step, on the loose side of line adjacent to drum, a clamp is installed the body of which is connected with operating line of additional hand-operated winch, hand-operated winch body is connected with frame of drilling rig winch. Further, tackle block is lifted by hand-operated winch. In the second step, loose drilling line portion is unwound by rotating drum in reverse direction.

EFFECT: higher reliability.

2 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: unit for running in and out of continuous steel pipes comprises a hoisting device with a feed mechanism mounted on a vehicle chassis, a drum with the central shaft for a flexible pipe winding placed on supports and a drum levelwind for steel pipes. In the vehicle chassis there is a cavity, preferably closed from the ground side and the drum is installed so that the part of its peripheral area faced to the vehicle chassis is placed in the above cavity, preferably in the plane parallel to the vehicle chassis through the wheel centrelines. A distance from the drum rotation axis up to the top plane of the frame of the vehicle chassis is as a minimum two, and preferably two and more, times larger than the distance from the bottom point of the drum rim in the above cavity up to the top plane of the vehicle chassis. The supports for the drum shaft intended for the flexible pipe winding are designed with a capability of changing the position height of the drum shaft from the vehicle chassis. The drum position height is changed as far as a pipe is winded off/up from/on the drum preferably discretely, after winding off/up of the next pipe layer. The drum is coupled kinematically to the supports height selector mainly by its shaft. In the design version the drum supports are made telescopic, consisting of at least two parts, a movable part and a fixed one. The fixed parts of the above supports are fixed rigidly to the vehicle chassis. The drum is coupled kinematically to change the height of the supports by means of a bevel gear, which gear pinions are mounted at its shaft ends. The support height selector is made as a reduction gear, preferably as a multiple-reduction gear unit mounted on the fixed part of the support. The output shaft of the reduction gear is made as a screw interacting with a nut from a screw-nut pair. The nut of the above pair is fixed rigidly in the fixed part of the support. An axial stroke L of the screw in its one turn is equal to the pipe diameter dpipe, while the screw turn number for one pipe layer winding/unwinding is determined by the following ratio: ns=nddpipeSd, where: ns is the screw turn number; nd is the drum turn number for one pipe layer winding/unwinding; dpipe is the pipe diameter; Sd is the drum width at the point of the pipe winding.

EFFECT: improving operating reliability.

2 cl, 4 dwg

FIELD: chemistry.

SUBSTANCE: group of inventions is related to oil industry and intended for workover, geophysical and thermal and hydrodynamic surveys of oil, gas and other wells using coil tubing and for well intervention. The unit (Fig. 1) includes a transportation basis 1 with two outriggers 12, the operator's cabin with control system 9, a drum 2 with drive 4, coil tubing 3, a winder 10 for winding of coil tubing to the drum, an injector with jigging blocks 5 with a guider 11 installed before it, the injector drive 6, sealing and BOP equipment 7 connected to the well Christmas tree 8 and a logging module 14, at that the drum drive is a power drive unit, the guider is made as a roll, coil tubing (Fig. 2) is a polymer-coated steel tubing; at the unit there is an installed pump 13 and a speed sensor measuring speed of the tubing feed to the well, two delivery force sensors and a metre measuring length of the tubing in the well, at that the above sensors, a temperature sensor and a well-pressure gage, the third delivery force sensor, a gamma-activity indicator, an accelerometer, a collar locator and the metre measuring length of the tubing in the well are connected to the control system, at that the logging module includes a temperature sensor and a well-pressure gage, a collar locator, a gamma-activity indicator, an accelerometer and the third delivery force sensor.

EFFECT: provision of workover, geophysical and thermal and hydrodynamic surveys of oil, gas and other wells.

5 cl, 1 ex, 2 dwg

FIELD: mining.

SUBSTANCE: method for performing up and down operations includes the stages, at which: there measured are the length parameters of the first drilling pipe via measuring device, there accepted are the first drilling pipe length parameters and the lifting height of the second pipe in controller, vertical position, into which the first pipe is to be set, is calculated via controller on the basis of the obtained data. The control of mechanisms for locating the first drilling pipe by height above and in vertical position relatively the drilling string is done via controller. Then the first drilling pipe is connected to the top drilling pipe in the string and the string is located in the bore hole. The first version of the system for performing up and down operations with drilling pipes includes measuring device, controller. The controller is functionally connected to the measuring device and is capable of controlling the measuring device. The controller is capable of receiving the measured parameters and calculating the necessary position of the drilling pipe above the string. The controller is additionally capable of controlling the mechanisms of pipe movement. The other version of the system for performing up and down operations, beyond the said, includes the receiving table for the first pipe location, on which there is a sliding shoe and retainer. Sliding shoe is capable of pushing the first pipe towards the retainer. The measuring device contains the contact sensor and defines the distance between the sliding shoe and retainer.

EFFECT: cost reduction.

FIELD: oil and gas industry.

SUBSTANCE: proposed method involves stages of movement of a drill winch by means of a transport vehicle on the ground tightly to the drill floor of the drilling plant design having a substructure and a lifting device on the substructure for lifting of the drill floor, lifting of the drill floor together with the drill winch connected to it using the lifting device of the substructure. A device to be used in the proposed method includes a drill floor having a floor section with inner open space, into which at least some part of the transport vehicle with a drill winch can move, and a connecting structure of the drill floor on the drill winch for connection to the corresponding connecting structure of the drill floor.

EFFECT: facilitating the drill winch installation on the drilling plant.

20 cl, 48 dwg

FIELD: construction.

SUBSTANCE: water-intake tubular well comprises a perforated casing pipe in soil arranged with its perforated section in a water-bearing layer of rocks, and a water-lifting device in it. At the upper end the casing pipe is equipped with a cover with a collar installed on it, on the cord of which there is a water-lifting pipe suspended. The water-lifting pipe has an injection valve at the lower input and a circular body along the casing pipe diameter with a suction valve and elements of hydraulic seal along the external diameter in the form of circular grooves. To drill a water-intake tubular well, a device is used, which comprises drilling pipes and a cutting drilling bit. The drilling bit is equipped with a container with a valve made of light material, for instance, plastic, to stock damaged rock. Drilling pipes are lighter pipes, for instance, water-gas pipes. On the upper end of drilling pipes there is a transverse lever of rotation. In case of high drilling depth a device is used for lowering and raising operations, including a clamp of drilling pipes and a support for clamp placement. The support is made in the form of a well head with openings of trapezoidal shape on the upper end. The clamp is made of one movable and one fixed halves with a tightening bolt and radial levers laid into openings of the well head.

EFFECT: increased height of water raising from a water-intake tubular well.

4 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to rotary drilling, namely to a pipe string suspension facility. The rotary table is fitted with the pipe string suspension facility and contains the rotary ring installed with a possibility of rotation around the central axis of the rotary table, meanwhile the rotary table is supported by the contact surface located perpendicular to the rotary table central axis. The rotary ring is formed by two or more sections of the ring, each of which is connected with the system containing the bearing housing section implemented with a possibility of rotation with reference to the base section. On the base contact surface of the bearing housing section the bearing housing groove is made. The corresponding base groove is made on the opposite surface of the bearing housing in the base section. The named grooves form curvilinear guide for a rolling body and have the centre of curvature coinciding with the central axis of the rotary table, the rolling diameter of the rolling body exceeds the total depth of the named grooves. In section of the bearing housing the channel is made which connects the ends of the groove of the bearing housing which contains transitional parts, each of which is fitted with a guiding part fitting into a base groove.

EFFECT: improvement of reliability of the device operation is provided.

1 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to the device and method of drilling with continuous bit rotation and continuous drill mud supply. The device for drilling rig that contains the first drilling machine with top drive, installed with possibility of vertical movement along guide, and second drilling machine installed between the first drilling machine and well with possibility of the vertical movement along the guide regardless of the first drilling machine with top drive and provided with rotary table, able to withstand weight of the drilling string, rotation drive ensuring continuous rotation of the drilling string, and mud chamber ensuring liquid connection between end of the drilling string and unit for mud supply, at that the mud chamber is equipped with holes for the drilling string containing devices that can close holes for the drilling string ensuring liquid tightness. The second drilling machine is also equipped with the driven casing tongs that ensure connection and disconnection of the element and drilling string, at that the specified driven casing tongs are installed in the mud chamber and are made with possibility of vertical movement to connect/disconnect element and drilling string.

EFFECT: connection/disconnection of pipe elements with drilling string is ensured with continuous bit rotation and with continuous mud supply.

10 cl, 7 dwg

FIELD: oil and gas industry.

SUBSTANCE: claimed group of inventions is related to method and device for round-trip well operations. The device for drill string running and pulling in a well comprises at least two pulling-and-running devices. Pulling-and-running devices are installed near opening at the drill site intended for string receipt. Notwithstanding one or several more pulling-and-running devices each pulling-and-running device is made to fix the string or the string section and to move the string or the string section in axial direction as well as to rotate the string section around its axis during axial movement. Each pulling-and-running device is equipped with pipe grab installed over opening at the drill site and made to move the string in axial direction. The pipe grab comprises a unit that ensures detachable connection with the string, prevents its rotation and a unit that is installed at or close to the string end and made to prevent rotation of the string section around its axis and to move the string section in axial direction. At that units of the pipe grab are made so that they may be removed from motion path of one or several running-and-pulling devices.

EFFECT: invention ensures reduction of round-trip time and improvement of automatic control over these operations.

5 cl, 2 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to equipment used for servicing and repair of oil and gas wells, particularly, to mechanised pipe wrenches. Pipe wrench driven jaw comprises head designed to receive the hook with threaded end. Note here that said threaded end is secured to head end opposite the hook-like end with adjusting wrench equipped with hydraulic drive. Note here that adjusting wrench can be actuated by control unit for opening/closing the jaws or handling different-diameter pipes.

EFFECT: pipe wrench for fast handling of pipes.

20 cl, 16 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to pipeline joints, for example, coupling and nipple joint. Machine comprises headstock (4), nipple clamp-and-revolve chick (5), rpm first transducer (6) of first element (1) arranged at headstock (4) and articulated with headstock (4) drive shaft, pipe (3) rpm transducer (7) to interact with pressure roller (8), clamp (9) arranged to slide along pipe (3) axis and force transducers (10) arranged at opposite sides of clamp (9). Said clamp (9) is equipped clamping chuck (11) rigidly jointed with rotary shaft (12) and two-arm lever (13) interacting with force transducers (10). Pipe (3) rests on supports (14) of frame (15). Machine control system (16) incorporates a display (17).

EFFECT: reliable tightening of the joint between two pipes.

2 dwg

FIELD: machine building.

SUBSTANCE: combined grab retraction control mechanism includes a gripping tool with radial gripping elements and a grab retraction control mechanism containing an annular housing with a central inner channel and a peripheral outer surface, stiff spokes and guide spokes located on the annular housing so that they can radially move from retracted position to engaged position. According to the method of enlarging the grab working range, the gripping tool is provided with radial gripping elements; the above grab retraction control method is provided; the item or the cylindrical gripping tool is installed in a central inner channel of the annular housing and the other item or the cylindrical griping tool around peripheral outer surface of the annular housing with spikes located in annular space between gripping elements of the gripping tool and the item. One end of each spoke is engaged with gripping elements, and the other end of each spoke is directly or indirectly engaged with the item; gripping elements of the gripping tool are moved radially so that gripping elements can exert pressure on the first end of each spoke. Besides, spokes are radially moved from retracted position to extended position and act as radial extension pieces of gripping elements of the gripping tool.

EFFECT: providing transfer of axial and torsional loads on the gripped tube item or from it; enlarging the grab working range.

16 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: hydraulic clamping device comprises a clamp set on a support inside a frame to which a hydraulic cylinder casing is rigidly fixed, the hydraulic cylinder includes a piston and is capable of producing force directed along the longitudinal axis of the hydraulic cylinder and applied to the clamp. An intermediate component is adjacent to the hydraulic cylinder piston and the clamp, one of its ends is fitted by a spherical end section included in the spherical support set in the piston.

EFFECT: reducing forces applied to hydraulic cylinder piston and pushing the clamp in the directions different from the hydraulic cylinder longitudinal axis.

8 cl, 6 dwg

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