Grab retraction control mechanism for creation of gripping tool with enlarged working range, and method of its use

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

 

The technical field of the invention

The present invention relates specifically to the applications that require the capture of tubular products and pipe columns, manipulation and lifting tool connected to the rotator drilling rig or design application of reactive efforts to ensure the transmission of axial and torsional loads on the captured tubular section or from it. In drilling land, construction and repair of wells with drilling rigs and installations underground repair of wells this invention relates to a wedge grips, and more specifically, on drilling rigs with top drives, applies to instruments descent tubular products attached to the top drive for gripping close to it section of pipe columns, up in the wellbore that are deployed in it or derived from it. Such instruments descent tubular products perform various functions necessary or useful for these works, which includes a quick connection and release, lifting, pushing, rotating, and applying the fluid under pressure in the tubular string and the release from it. The present invention established governance mechanisms to increase the capture range of such instruments descent tubular products.

Background of invention

Until the last BP is like a mechanical pipe wrenches used for descending columns of casing or drill pipe in oil wells and recovery wells in cooperation with the lifting system of the rig. The use of mechanical pipe wrenches provides a relatively efficient Assembly of pipe columns, consisting of pipe sections or parts abutting threaded ends, by screwing mating threaded ends with the formation of the threaded joints between successive pipe sections at their building on the column installed in the wellbore, or in the reverse process of removing and dismantling. But the use of mechanical pipe wrenches simultaneously performs other useful functions, such as rotation, indentations or filling fluid medium after extension pipe on the column or remove it from the column, and during the descent or ascent of the column in the wellbore. Descent tubular products using pipe wrenches are also usually requires staff working in areas of increased risk, such as the rig floor or, even more dangerous on the drilling floor, on the so-called balcony to work with casing pipes.

Creating rigs equipped with top drives, has provided a new way of running pipe products and specifically, tubing, where the top drive equipped with so-called instrument of descent tubular products top drive for gripping and, if possible, create a seal between the nearest section of the pipe and the hollow shaft of the top drive. (SL is blowing to understand that the hollow shaft of the top drive, in General, contains such components of the drive columns, which you can attach to it, and the far ends of which effectively act as an extension of the hollow shaft). Therefore, we have developed various devices, in General, designed to run casing top drive. The use of these devices in cooperation with the upper drive enables the lifting, rotation, penetration and filling of the casing pipe mud during the descent, thus removing the limitations associated with the use of mechanical pipe wrenches. At the same time, automation exciting mechanism in combination with the specific advantages of top drive reduces the amount of required participation of staff in comparison with the descent using mechanical pipe wrenches and, thus, increases the security.

In addition, the manipulation of the casing and the descent from the use of such a tool descent tubulars using a top drive, the weight of the column must be transferred from the upper drive support device when near or in the work section of the pipe increasing or removed from the collected columns. This function typically performs an annular wedge grip, driven axial load of zahvativ the developing device, use the V-grip or jaw, placed in the cavity of the housing wedge grip through which the lower casing, and the casing wedge grip has a channel in the shape of a truncated cone with decreasing down in diameter and rests on the rig floor or installed in the drill floor. The V-grip, acting as the ring wedges between the section of pipe near the end of the column and the inner surface in the shape of a truncated cone shell V-grip, with the application of traction load captures pipe but moves or slides down and, thus, the radially inward on the inner surface of the shell V-grip when the weight of the column is transferred to the capture. Radial force between the wedge grip and casing pipe, thus, automatically generated or automatically activated by the axial load, i.e., when considering towing capacity of the dependent variable and the weight of the column of the independent variable, there is a control loop with positive feedback, where the independent variable is the weight of the column is rigidly transmitted over the feedback channel, driving a radial grip force, which monotonically valid driving traction ability or resistance to sliding, which is the dependent variable. Similarly, should be counter-KRU is ademu the time of fastening and unfastening, included in the section of the pipe, near the end of the assembled column. This function is usually performed pipe wrench having seizures, connecting with the nearest section of the pipe and the lever is attached a connecting link, such as a chain or rope to the design of the rig to prevent rotation and, thus, create a counter torque with no response wedge grips in the case V capture. The grip force of such pipe wrenches likewise usually created automatically or automatically included positive feedback on the applied load torque.

Exciting tool patent application PCT CA 2006/00710 and bids US 11/912,665 includes a chassis having a cargo adapter attached to transfer axial load on the rest of the housing or main body and configured to connect with the rotator of the machine or frame transmission reactive efforts, an exciting arrangement, the bearing main body having a gripping surface, provided with a means of switching to radial stroke or movement of venutolo position of connection radial connection of the traction load surface engagement with the inner surface or the outer surface of the product in response, n is the relative axial movement or axial the progress of the main body, in at least one direction relative to the surface of the grip. Used a control mechanism acting between the chassis and exciting layout, which during the rotation, at least in one direction of the cargo of the adapter relative to the surface of the capture, provides axial displacement of the main body relative to the exciting layout to move exciting layout of venutolo position in meshed position under the action of the tools included in the work.

Thus, this exciting tool uses mechanically incorporated into the work capture mechanism that creates its exciting force in response to activation of axial load or axial stroke of the layout of engagement, inclusion in the work taking place in conjunction with the application of an external axial load and external load torsion or independently from them in the form of application of the right or of the left torque loads transmitted through the tool from the cargo adaptor body composition on the surface of the capture exciting layout, combined traction load with the product.

It should be clear that the usefulness of data or other similar exciting tools is a function of the range of product sizes, which usually results in minimal the grave and maximum diameters of tubular products, which can be placed between the surfaces of the grip in the fully retracted and fully extended the provisions of this exciting tool, i.e. radial size and radial stroke exciting surface. The usefulness of this exciting tool can be improved if the tool will be able to accommodate products with sizes over a wide range. The present invention is directed to this need for applications requiring increased radial dimension and a radial stroke that often occurs when adaptation exciting tools for descent tubular goods oil country tubular goods.

The invention

According to one aspect of the present invention, the set of control mechanism nomination capture to create an exciting tool with radial exciting elements with an extended working range. The control mechanism nomination capture contains at least one ring-shaped housing having a Central inner channel and the outer peripheral surface, a rigid elongated spokes and guides spokes are placed on the annular casing and closely adjacent to the spokes to secure the spokes with the possibility of radial movement of venutolo position in meshed position.

According to another aspect of this is th inventions created way, to use the above-described control mechanism nomination capture to increase the operating range of exciting tool with radial spectacular elements. The method includes the installation of the product or cylindrical gripping tool in the Central internal channel, at least one annular housing and other products or cylindrical gripping tool around the outer peripheral surface at least one annular body, and the spokes are placed in the annular space between the exciting elements of the gripping tool and the product, the first end of each of the spokes connected with exciting elements, and the second end of each of the spokes directly or indirectly engages with the product. When exciting the exciting elements of the tool are moved radially to the application of pressure on the first end of each of the spokes, the spokes are moved radially from venutolo position into the extended position and act as a radial extension of exciting elements of an exciting tool.

As noted above, the spokes may apply the product directly or indirectly. Later in this document additionally described a configuration in which the spokes engage with the product indirectly. In this embodiment, the slaves exciting ELEH the coefficients set on the second end of each of the spokes. Radial movement of exciting elements of the gripping tool is passed through the spokes on the slaves exciting elements.

As noted above, the product or gripping tool can be installed in the Central inner channel. When the product is installed in a Central internal channel, the internal surface of the gripping tool is placed on the periphery of the housing, and a second end of each of the spokes directly or indirectly connected with the external surface of the product. When the gripping tool is installed in the Central internal channel, the internal surface is placed around the circumference of the body, and the second end of each of the spokes directly or indirectly engages with the inner surface of the product.

Brief description of drawings

The above and other features of the invention more readily understandable from the following description with reference to the accompanying drawings, is made only to illustrate, not to limit the invention or specific shows options for implementation. In the drawings, is shown following.

1 shows a diagram of the control mechanism nomination surface capture, placed inside the pipe of the product.

Figure 2 shows the appearance of the instrument descent tubular products with internal engagement with the layout of the control mechanism nomination for the Ergneti capture.

Figure 3 shows an isometric external view of the layout of the control mechanism nomination surface grip.

Figure 4 shows an isometric external view of the main guide plate.

Figure 5 shows an isometric external view of an auxiliary guide plate.

Figure 6 shows the cross-section layout of the control mechanism nomination surface grip.

7 shows a cross-section layout of the spokes.

On Fig shows a cross section of the control mechanism nomination surface grip when placed inside and coaxial with the product.

Description of the preferred embodiments of the invention

General principles

Figure 1 shows a schematic cross section along a radial plane mechanism 50 management nomination surface capture, consisting of spokes guides 51 and 52 spokes, shown in the form of a set of elements located inside the pipes 53 and acting together as a rigid body (bonded with each other outside of the two-coordinate of the image plane). Needles 51 are put forward surface 54 of the grip, tight to the tube 53 product and push the device gripping tool or surface 55 of the joint. The vectors can usually be applied to the surface 55 of the junction exciting tool spectacular tool on the I application of torque through the mechanism 50 controls the extension surface of the grip to the product 53, and the resulting forces on the surface 54 of the grip shown on one needle 51, where the specialist in the art it should be clear that the vectors Tiand T0" tangential forces should in the normal case to be less than vectors "Riand R0radial forces as required to meet the normal properties interface capture /products, and, thus, a relatively short radial spokes must demonstrate stability and relatively long radial spokes may seek to scroll through and be called by the application of excessive leverage loads while preventing scrolling through a radially non-uniform application of load at the junction 56 between the pin 51 and article 53 and the junction 55 between the pin 51 and a gripping tool (not shown). To stabilize and prevent excessive radial lever loads, the mechanism 50 control extension provided with at least one rigid guide 52 spokes acting between adjacent spokes 51 and creating parallel contact faces 57 of the guide at the junction 58 of the guide with each spoke with a thick fastening spokes 51 and also rigid enough to prevent any tendency of the spinning spokes 51 through contact with the joints 58 of the guide spokes, resulting in pin voltage reactive the th moment shown by vectors wiand w0"acting on radially inner and outer regions, respectively, while the contact face 57 of the guide is sufficiently smooth for the implementation of the radial connection at the junction 58 slidable guide pins, and to provide radial movement of the spokes 51 under load and the subsequent provision of radial movement put forward surface 54 of the engagement and connection with article 53. It should be obvious that the mechanism 50 control extension surface capture created design, transmitting radial and torsional loads from junction 55 of exciting tool for extended surface 54 of the grip and prevents the tendency of the spokes 51 to rotate or emergency application of the reactive moments to junction 58 of the guide spokes, and the intersection of product 53 is extended surface 54 of the grip.

The control mechanism nomination surface capture

Figure 2-8, shown and described below, the preferred implementation of the present invention, i.e. the control mechanism nomination surface engagement, the principle of which is shown in figure 1 and described above. Figure 2 shows the tool 100 descent tubular products with internal capture configuration layout 400 of the control mechanism nomination surface to which the made with the possibility of mating with the lower end 109 of the link 120 capture and reliance on him. Layout 400 includes multiple radially oriented spokes 480 (shown five, corresponding to the number of jaws 160), the main and auxiliary plates 460 and 470 railing spokes, respectively, segmented retaining ring 520 and threaded retaining ring 530. The main plate 460 and railing spokes coaxially mounted on the upper ends 481 spokes 480 and, similarly, the auxiliary plate 470 and railing spokes mounted on the lower ends 482 spokes 480, where the spokes 480 is connected with reversed inside the main and auxiliary radial grooves 465 and 475, respectively, made in the plates 460 and 470, respectively, for education, thus, guides the spokes, as shown in figure 1 and described above. As also shown in figure 2, you can perform slots 497 to host spring rings (not shown) to effect the retraction of the spokes 480. Figure 3 shows an isometric external view of the layout 400 of the control mechanism nomination surface capture separately from the instrument descent, with spokes 480 is designed as radial internal layout elements 490 partitions rigidly connected to the radial outer elements 500 dice bearing sliding surface 504 capture, vypolnenno is with the possibility of connection with the product (not shown).

Figure 4 shows an isometric view of the base plate 460 with the guides, with the upper portion 461, the lower portion 462, the inner channel 463 and the outer surface 464. The main plate 460 has multiple radial grooves 465, in this case five, each of which is formed load bearing faces 466 and 467 on the lower part 462 passing from the inner channel 463 to the outer surface 464. Near and concentrically with the inner channel 463 and lower plate 462 460 posted by groove 468 under spring ring and the edge 469 stops. On the top plate 461 460 is placed concentrically with the inner channel 463 and the adjacent groove 459 retaining ring.

As also shown in Figure 3, the layout 400 of the control mechanism nomination surface of the grip holding ring 520, consisting of many segments 521, in this case five, with the top face 522, the lower edge 523, the inner face 524 and the outer face of the 525. The retaining ring 520 is installed adjacent to the base plate 460, so that the lower side 523 joined and rigidly fastened to a groove 459 install the retaining ring on the upper side of the plate 461 460 with the guides on the bolts (not shown). The inner face 524 retaining ring 520 has an inner planted section 526, made with the possibility of connection, as shown in figure 2, with the axial Ude the limiting slot 148 to limit, thus, relative axial movement of the base plate 460 with the guides in an exciting tool 100.

Figure 5 shows an external isometric view of the auxiliary plate 470, with the upper part 471, the bottom line 472, the inner channel 473 and the outer surface 474. Auxiliary plate 470 has a lot of radial grooves 475, in this case five, each formed load bearing faces 476 and 477 on the upper part 471, passing from the inner channel 473 to the outer surface 474. The ledge 478 direction of the retaining springs and the edge 479 travel limit is set adjacent to the inner channel 473 and concentric with him on the bottom plate 472 470 with the guides.

Figure 6 shows the cross-section layout 400, threaded retaining ring 530 with the top 531, the inner surface 532 and the bottom side of 533, and the ring has an element 534 seal on the upper side 531 and the element 535 thread on the inner surface 532. Ring 530 is located concentrically with the supporting plate 470 item 535 threaded with the possibility of screwing, as shown in figure 2, with the housing 144 of the tool 100 of the descent of tubular products. Also, as shown in Fig.6, top edge 531 ring 530 is connected with the lower side plate 472 470, thus limiting axial relative displacement is their down auxiliary plate 470 and layout 400 of the control mechanism nomination surface grip.

7 shows a cross-section layout spokes 480, in this embodiment, the present invention consists of wall 490 and die 500. It is clear that the present invention is not limited to this device, and the number of components of the spokes, you can choose to enable ease of manufacture and interchangeability of parts in size, the required strength of the component correlated with the radial length of the die and the departure from the circle. As also shown in Fig.7, the elongated wall 490 has an upper portion 491, the lower part of 492 inner surface 493 and the outer surface 494. The outer surface 494 is equipped with a number of bearing axial load projections 496, in General, located between the upper part 491 and the lower part of 492 and the inner surface 493 equipped with a variety of bearing axial load grooves 495, located between the upper part 491 and the lower part of 492. Wall 490 has many grooves 497 under spaced around the circumference of the retaining spring, in this case, four. One of the slots located in the upper part 491, one of the slots located in the lower portion 492, and both slots are designed to accommodate spring rings (not shown), the right retaining wall 490, and two slots are placed on the inner surface 493, which create space for additional spring rings directly hold the state of the jaw 160 of the tool 100 of descent tubulars (not shown), and the two retaining resistant ledges 498, one on each side, have an axial orientation and pass between the upper part 491 and the lower part of 492. Wall thickness 490, in General, is determined by the thickness of the jaw 160 and the requirement to have some non-zero thickness of the body between the jaw 160 while maximising the contact area of the spindle.

As also shown in Fig.7, the die 500 with the upper part 501, the lower part 502, the inner face 503 and the outer surface 504 of the grip has a multitude of axially retaining grooves 505 with transverse orientation, in General, located on the inner surface 503 between the upper part 501 and the lower part 502. As shown in Figure 3, the die 500 is attached to the wall 490 bolts (not shown)located in the holes 509 under the bolts. As shown in Fig.7, the inner surface 503 of the die 500 is joined and bonded to the outer surface 494 of wall 490, so that the axial retaining grooves 505 die 500 are connected to the bearing axial load projections 496 wall 490, and, as shown in Fig on the cross-section view of the layout 400 of the control mechanism nomination surface capture, transverse confining the axial protrusions 506 die 500 find on the transverse face wall 511 490 and join them together creating a means for transmitting axial directed around the circumference and radial load, the conditions between the wall 490 and the die 500. As also shown in figure 2, the inner surface 493 of wall 490 performed with coupling and coupling with external exciting surface 164 jaw 160 of the tool 100 of descent tubulars (not shown) and creates a means of transferring load between the tool 100 descent tubular products and wall 490 in a manner analogous to the transfer of load between the wall 490 and the die 500.

As also shown in Fig, extended surface 504 capture die 500 is, in General, a surface with increased friction (not shown), configured to create a balance between the indentation in the surface and frictional characteristics and create a relatively large area of contact for the distribution of radial load contact and, therefore, minimize the deformation of the product 401 when the connection of the traction force to the inner surface 402 of the product 401, and create a means of transmitting axial directed around the circumference and radial loads between the die 500 and item 401.

As also shown in Fig.6, ribs 469 and 479 travel limit on the plates 460 and 470, respectively, act in connection with the holding of the spring grooves 497 on top 491 and the lower part 492 wall 490 and function as a hard stop stops coming in contact if link 480 spokes are moved radially beyond raschetnaja. As shown in Figure 3, the spokes 480 layout 400 of the control mechanism nomination surface of the grip is mounted axially between the main plate 460 and the auxiliary plate 470 and placed in the guide grooves 465 and 475, respectively, so that the transverse face wall 511 490 is connected with the guide slots for sliding them in and operate in response to ravnodeystvuiushchey lateral forces on pages 480 spokes due to torsion applied at the junction 499 instrument descent tubular products on the inner surface 493 of wall 490, as shown in figure 1 and described above.

As also shown in figure 2, the layout 400 of the control mechanism nomination surface of the grip installed on the outside of the instrument descent tubular products 100 and coaxial with it, while the surface 499 junction exciting tool on the spokes 480 connected with exciting surface 164 of the jaws 160 layout of the grip 120, and spokes 480 can be combined in a circle, with the jaws of the tool 100 of the descent of tubular products. It is also clear that the number of spokes 480 may be equal to the number of jaws 160 on the tool 100 of the descent of tubular products. As also shown in Fig, specialist in the art it should be clear that the control mechanism nomination surface capture is not necessarily connected or bonded with a particular instrument descent of Trubin the x products with this arrangement 400 of the control mechanism can be created with built-in communication between the main and auxiliary plates 460 and 470, respectively, for preventing relative axial movement, but provides a relative rotation of each plate with guide around the axis of the layout 400 of the control mechanism. In this case, the arrangement 400 may be provided with a means of axial retention in the product 401, so that the layout 400 of the control mechanism nomination surface capture can first be inserted into the product and to capture product, then the instrument descent tubulars (not shown) can be inserted in the layout 400 of the control mechanism nomination surface capture and integrate the work of the tool descent tubular products may include the work of layout 400 of the control mechanism nomination surface capture. It should be clear that such a device may be useful in embodiments where seized numerous items of different sizes with rapid change.

In this patent document, the word "comprising" is used in a non-limiting sense, meaning that items following the word are included in, but not specifically mentioned are not excluded. A reference to an element in the singular does not exclude the presence of a few items now, if the context clearly requires having one and only one element.

Specialist in the art it should be clear that it is possible to perform modifications to the shown embodiments without departing from the essence and scope of the invention, as defined below in this document in the claims.

1. Combined control mechanism nomination capture, containing exciting tool with radial spectacular elements driven axial load or speed, the control mechanism nomination capture containing at least one ring-shaped housing having a Central inner channel and the outer peripheral surface of the rigid spokes in contact with the radial breathtaking exciting elements of the tool on the first side and the bearing surface of the extended grip on the second side opposite the first side, and guides spokes located on the at least one annular casing and closely adjacent to the spokes to prevent axial rotation or rolling of the spokes with to ensure the possibility of their radial movement of venutolo provisions in the engagement position in response to movement of the radial exciting exciting elements of the tool.

2. A combined mechanism according to claim 1, in which the minority is her least one ring-shaped body includes an upper annular plate and a lower annular plate.

3. A combined mechanism according to claim 2, in which the spokes are located between the upper annular plate and a lower annular plate.

4. A combined mechanism according to claim 1, in which slaves exciting elements mounted on one end of each of the spokes.

5. A combined mechanism according to claim 1, which contains a stop limit nut located between each of the spokes and the guides of the spokes.

6. A combined mechanism according to claim 1, in which the spokes are tightened springs in stenothoe position.

7. A combined mechanism of claim 1, wherein the control mechanism nomination capture moves breathtaking instrument, and radial exciting elements, spokes and gripping surface of the joint in a rigid body having a first side and a second side, with radial exciting elements of an exciting tool on the first side are driven axial load capture.

8. A combined mechanism according to claim 7, in which at least one ring-shaped body includes an upper annular plate and a lower annular plate.

9. A combined mechanism of claim 8, in which the spokes are located between the upper annular plate and a lower annular plate.

10. A combined mechanism according to claim 7,in which slaves exciting elements mounted on one end of each of the spokes.

11. A combined mechanism according to claim 1, in which the radial exciting elements are driven mechanically by a set of actuating axial load or speed and actuation torque in at least one direction of rotation.

12. Combined control mechanism nomination capture, containing exciting tool with radial spectacular elements driven hard body, transmitting torque in the absence of axial load, the control mechanism nomination capture containing at least one ring-shaped housing having a Central inner channel and the outer peripheral surface of the rigid spokes in contact with the radial breathtaking exciting elements of the tool on the first side and the bearing surface of the extended grip on the second side opposite the first side, and guides spokes located on the at least one annular casing and closely adjacent to the spokes to prevent axial rotation or rolling of the spokes to ensure the possibility of their radial movement of venutolo provisions in the engagement position in response to movement of the radial exciting exciting elements of the tool.

13. The method of increasing the operating range C the grip, according to which: provide an exciting tool with radial spectacular elements driven axial load or speed, provide a mechanism for managing the nomination capture containing at least one ring-shaped housing having a Central inner channel and the outer peripheral surface of the rigid spokes and guides spokes located on the at least one annular casing and closely adjacent to the spokes to secure the spokes with the possibility of radial movement of venutolo provisions in the engagement position; set the product or cylindrical gripping tool in the Central internal channel, at least one annular housing and other the product or cylindrical gripping tool around the outer peripheral surface at least one annular housing with spokes arranged in the annular space between the exciting elements of the gripping tool and product, with the first end of each of the spokes engages with spectacular elements, and the second end of each of the spokes directly or indirectly engages with the product; make such axial load or move for radial movement of exciting elements of an exciting tool to exciting elements of the butt of the Wali pressure on the first end of each of the spokes, moreover spokes radially moved from venutolo position into the extended position and act as a radial extension of exciting elements of an exciting tool.

14. The method according to item 13, according to which the spokes mediated gear with the product, led exciting elements mounted on the second end of each of the spokes, while the radial movement of exciting elements of the gripping tool is passed through the spokes on the slaves exciting elements.

15. The method according to item 13, according to which the product is installed in a Central internal channel, at least one housing, the inner surface of the gripping tool is placed around the periphery of the at least one chassis and the second end of each of the spokes directly or indirectly engage with the external surface of the product.

16. The method according to item 13, according to which the gripping tool is installed in the Central internal channel, at least one housing, the inner surface is placed around the periphery of the at least one chassis and the second end of each of the spokes directly or indirectly engage with the inner surface of the product.



 

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26 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: wrench with adjustable torque moment for pipe elements includes lower and upper grips, pivot bearing located between grips, actuation system connected between grips and system for measurement of actual radius or system for measurement of actual vector of force created with actuation system. At that, pivot bearing provides the possibility of turning upper and lower grips relative to each other by means of actuation system. Measurement method of torque moment at bringing the wrench into operation involves measurement of actual radius measured perpendicular to force vector and between force vector and rotation axis of pipe element, or measurement of actual force which is applied for action of torque moment on the connection, and calculation of torque moment on the basis of at least one measurement.

EFFECT: increasing operating efficiency of spinning wrench.

12 cl, 6 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

Elevator // 2482258

FIELD: oil and gas industry.

SUBSTANCE: elevator includes a housing and a locking mechanism. The housing consists of two semi-housings with handles welded to them, a segment and two axes attaching the segment to the semi-housings. The locking mechanism includes the following structural members: a "П"-shaped clamp with a handle welded to it, a protective plate, a locking spring for fixation of the clamp in the closed position, an axis, a latch made in the form of a frame with a locking tooth, and a latch fastening spring.

EFFECT: enlarging the range of the tubes retained with the elevator, increasing safety, reliability, service life, manufacturability and ergonomics of the elevator.

6 dwg

Elevator // 2414583

FIELD: gas-and-oil producing industry.

SUBSTANCE: elevator consists of case with cantilevers and of flap with locking device pivotally connected to case with axle. Also, the case of the elevator and cantilever correspond to a split structure. In the case of the elevator there are made two orifices for transient seat of cantilevers into the case, they are secured with bolt connections and additionally fixed with a pin.

EFFECT: increased reliability of device operation due to reduced bending moment during elevator operation facilitating partial transfer of loads from cantilevers to case.

2 cl, 6 dwg

Elevator // 2414582

FIELD: gas-and-oil producing industry.

SUBSTANCE: pipe elevator consists of case, of flap pivotally connected to case with axle and of locking device. Also the locking device includes a gripping unit made in form of a frame with vertical poles and of rotating mechanism positioned on the flap of the elevator. The rotating mechanism contains a spring-loaded shaft with a handle and of a carrier with rollers installed in a cartridge and interconnected by means of a pin: the rollers turn relative to each other.

EFFECT: increased safety, reliability and service life of elevator.

4 dwg

Case elevator // 2414581

FIELD: gas-and-oil producing industry.

SUBSTANCE: case elevator consists of case, of flap connected to case, of bracket, of latch with locking tooth and of spring prop. The bracket is connected to the case and is made in form of a strap of "П"-shape with ears and a protective frame welded to it. The spring prop consists of two springs and is positioned on axis of the bracket, also, one end of each spring rests on the case of the elevator, while another end rests on a lever of the latch.

EFFECT: improved ergonomics of operation; safety, reliability and increased service life.

3 dwg

FIELD: oil and gas production.

SUBSTANCE: hanger comprises a body provided with jaws from beneath divided by a radial pipe sample and a grip fixture rotatable and fixed while locked. The grip fixture is equipped with an external lever, while the body has a cross-section closed groove for the lever of the grip fixture. The body is provided with a latch mechanism that represents a spring-assisted rod interacting with and fixing the lever of grip fixture while locked. Inside the jaws there is a ring sample that interacts with the latch mechanism designed as a hollow cylinder mounted in the ring sample and turnable about the body axis to be closed along the pipe perimeter. In parallel to the inclined wellhead there is a guide provided with a carriage designed to enable longitudinal motion of the guide. The carriage and the hanger body are pivotally interconnected.

EFFECT: improved reliability of the device, downsizing and reduced weight with possibility to centre the tubing string in relation to the axis of the inclined wellhead.

3 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production and geological research, meant for string head remote screw up. Includes base, installed on the string head flange, fixed on it socket, on which bottom cylindrical bore installed cylinder with rotation possibility, on the cylinder top cylindrical bore back installed tooth gear with rotation possibility, covered with a plate, installed inside of the cylinder, on which unit of hydro lines connection installed, on the socket external lateral surface fixed one side operating hydro cylinder for connection, at pressure absence, tooth gear with base, at that under plate fixed two plunger cylinders from the both sides, plungers executed in a middle part as tooth battens, located in plunger cylinders cases cuttings, for interaction with tooth gear.

EFFECT: work productivity and safety increase because of mechanised string head screw to casing string without use of drive mechanisms, also provided reliable sealing of screw connection.

5 dwg

FIELD: mining.

SUBSTANCE: pipe elevator with female and male ends contains a bush housing with an eye ring, an interchangeable clamping tool with half-jaws hinged on the end of a retractable rod; the jaws can be opened in the position beyond the bush housing and can be closed in the position inside the housing. The locking device consists of a rotary handle with a spring-loaded retainer and a lever. The base of the handle is rigidly connected with the bush mounted in such a way as to enable to lock the retractable rod located inside the bush. Not hinged ends of half-jaws are overlapped and fixed by means of a conical precision quick release bolt fitted with a non-losable nut. The internal working surface of half-jaws fits the profile of the female end of the GRP pump and compressor pipe. The exposed surface is mated with the internal opening of the bush housing with a radial gap that provides the release of the pipe elevator of the GRP pump and compressor pipe after removal of the conical precision quick release bolt.

EFFECT: possibility of operation with GRP pump and compressor pipes is provided.

5 dwg

FIELD: fixed constructions; apparatus for servicing and exploitation of oil, pressure and gas wells.

SUBSTANCE: elevator apparatus for glass-reinforced plastic tubing with female and pin ends comprises sleeve housing with a lifting eye, retrievable grip having jaw halves articulated to the end of a retractable rod and allowing to open said jaws being positioned outside the sleeve housing and to close them being positioned inside the latter, locking device comprising a turning handle wherein a spring-loaded lock and a lever are mounted. The turning handle is rigidly connected to the sleeve that is mounted so that to allow the retractable rod being fixed therein. The free ends of the jaw halves are lap-mated and jointed by means of a taper precision pin being fixed with the spring-loaded lock that is attached to one of the jaw halves. The inner bearing surface of the jaw halves mates the profile of the female tube end. The outer surface mates the inner bore of the sleeve housing with a radial space left to ensure releasing the elevator from tubing when the tapered precision pin is taken off.

EFFECT: speeding up the tripping process.

5 dwg

Elevator cartridge // 2278946

FIELD: handling rods, casings, tubes or the like outside the borehole, particularly means to transmit rotation movement to drilling string and to perform trips for drilling rigs provided with floating spindle.

SUBSTANCE: elevator cartridge comprises driving and driven links connected one to another by swivel so that the links may mutually rotate about vertical and horizontal axes. Elevator cartridge also comprises clutch, which prevents mutual link rotation in switched-on position. Driving link is made as the first shaft having non-round section and provided with axial orifice. Driven link is made as the second shaft having cross-section similar to that of the first shaft. Swivel is formed as round rod arranged in leading link orifice and provided with ear at lower end thereof. The ear is aligned with fork formed at upper end of driven link by means of transversal axis. The clutch is made as case movable along driving and driven links and surrounding them in lower position.

EFFECT: increased service life due to reduced wear thereof and simplified structure.

7 cl, 10 dwg

FIELD: oil and gas well repair, particularly devices to perform tubing string round-tripping operation.

SUBSTANCE: elevator comprises body with vertical handle, clip and grip. The grip includes two jaws pivotally arranged in the body and fixers, which may cooperate with jaws. The fixers are made as fingers. Springs are installed in the body so that the springs may cooperate with the jaws. The fixers are provided with springs to return the fixers in initial position. Fixer drive is arranged in vertical handle permanently secured to the body and comprises lever higgledy connected to lever handle. The lever may cooperate with jaw fixers. The elevator also comprises flag safety fixer for drive lever. The flag safety fixer is installed on body handle and may move between drive lever fixing and releasing positions, wherein the flag indicates above positions.

EFFECT: increased efficiency of elevator operation due to simplified control.

2 cl, 3 dwg

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