RU2137897C1 - Device for receiving, storing, and delivery of pipes and rods during round-trip operations - Google Patents

Abstract

FIELD: oil production industry. SUBSTANCE: device can be used in drilling, completing, and repair of oil, gas and other wells. Device has movable platform which carries mechanism for receiving and transfer of pipes with drive unit and racks having horizontal shelves and abuts. Platform is provided with hydraulic jacks for raising. Installed on platform is pipe transfer mechanism made in the form of trough which is kinematically linked with levers. One of levers is connected with drive unit. Mounted on trough are grips with limiters for pipes. Installed on front end of trough are pushers. Device is provided with posts for transfer of pipes. Posts are installed on platform. Mounted on posts are shelves with bevels directed towards rack. Shelves are adapted for displacement along posts. Racks are pivotally linked with platform for their turning in horizontal and vertical planes. Aforesaid embodiment of device allows for increasing operating capacity in performing round-trip operations. EFFECT: higher efficiency. 7 dwg

Description

 The invention relates to the field of drilling, development and repair of oil, gas and other wells.

 Currently, there are installations and devices that perform operations for the reception, accumulation and delivery of borehole pipes (see, for example, AS USSR N 1141182, N 768933).

 Closest to the claimed invention is a device for receiving, accumulating and issuing borehole pipes during tripping operations on.with. 1141182, BI N 7, 1985

 This device consists of a mobile platform on which a pipe transfer mechanism with a drive and grippers radially mounted on the shaft, a pipe supply unit to the axis of the well, and a pipe storage rack with horizontal shelves and stops concentrically from the shaft are mounted.

 The capture consists of a housing with a drive and two jaws, one of which has a slider and a copier connected to the linear displacement drive by means of a pusher.

 The main disadvantage of this device is the presence of a structurally complex gripping unit, which leads to a loss of time during the operation of the device spent on gripping and transferring the pipe from the pipe supply unit to the racks. In addition, the node supplying pipes to the axis of the well is limited to a certain level in height (from the surface of the earth), which makes it impossible to receive pipes from wells with different heights of the surface layout of well equipment.

 This installation as a whole is structurally complex and during operation involves the presence of auxiliary transfer operations, such as transferring pipes from the feed unit to the shelving and vice versa, creates a loss of time due to auxiliary operations of capture and transfer, i.e. It does not provide continuity of the working cycle and a clear manufacturability of the production process.

 The aim of the invention is to increase the productivity of the installation by eliminating intermediate auxiliary operations by concentrating and combining in time in a single continuous movement of all elements of the production cycle and at the same time simplifying the design and increasing its reliability, as well as simplifying operating conditions.

 To achieve this goal, the installation of receiving, storing and dispensing downhole pipes and rods during tripping operations has a mobile platform on which a mechanism for receiving and transferring pipes with a drive and racks with horizontal shelves and stops located concentrically to the shaft axis is installed. The platform is equipped with hydraulic jacks with stoppers and a pipe receiving and transfer mechanism is installed on it, made in the form of a chute movably connected with levers. Moreover, the front lever is connected to the drive. On the upper forming shelf of the gutter, grips with limiters are installed, and there are through holes on the edges of the bottom of the gutter to pass the stops installed on the platform surface. Pushers are installed on the front end of the gutter.

 The installation also has pipe transmission racks mounted on the platform, with the front strut equipped with a counterweight. The shelves have a bevel of the upper generatrix towards the rack and are attached to the racks with the possibility of their movement along the racks, and the racks are pivotally connected by an axis to the platform with the possibility of their rotation in horizontal and vertical planes.

 The aforementioned features are significant, since their combination is unknown and allows to achieve high installation performance, reliability, and without complicating the design as a whole.

 In FIG. 1 shows a general view of the installation in the receiving position of pipes lifted from the well, and FIG. 2 - the same when feeding pipes into the wells. In FIG. 3 section of the front transmission rack and the mechanism for receiving and transmitting pipes. In FIG. 4 - capture: Ia - in the position of interaction with the emphasis of the platform; Ib - in position after interaction with focus; II - capture of the pipe from the rack; III - capture position after receiving the pipe into the gutter of the pipe receiving and transfer mechanism. In FIG. 5 is a motion diagram of a trough of a pipe receiving and transfer mechanism, and FIG. 6 - location of the installation relative to the wellhead and the interaction of the pipe transfer mechanism with the pipe transfer racks.

 The installation (Fig. 1, 2, 3, 4, 5, 6) consists of a platform 1 with hydraulic jacks 2 and stops 3, on which a mechanism for receiving and transferring pipes 4 with stands 5 and 6, racks 7 with supports 8 is installed.

 The mechanism for receiving and transmitting pipes 4 consists of a chute 9, movably mounted on levers 10 and 11, mounted on shafts 12 and 13, rigidly mounted on the platform 1. The lever 10 at the lower end is connected to the drive (hydraulic cylinder) 14 mounted on the platform.

 On the upper generatrix of the shelf of the groove 9 on the shafts of rotation 15, removable grips 16 with limiters 17 are installed. At the front end of the groove 9 pushers (limiters) are rigidly fixed.

 Rack 5 transmission pipe consists of a beam-rail 18, mounted on a shaft 19 mounted in the bearings 20 of the platform. At the ends of the shaft 19, counterweights 21 are fixed.

 The pipe transfer rack 6 is removable and consists of a beam-rail, similar to 18, fixed with the lower end to the platform 1.

 On the rails of the transmission racks, shelves 22 are installed with a beveled upper generatrix 23. The shelves can be moved along the rails and fixed at the required level with a finger 24 inserted into the hole 25 of the rails.

 The rack consists of a beam 7, pivotally connected axis 26 mounted on the platform 1 with the possibility of rotation in horizontal and vertical planes. The supports 8 have a screw thread 28, a lock nut 29 and a shoe 30. The rack is bounded by the rack 31 and has shelves 32 with stops 33. The stops 34 are rigidly fixed to the platform.

 Installation works as follows.

 After orienting it relative to the wellhead and the lifting unit, the racks 7 from the transport position 7 (Fig. 2) are installed around the axis 26 perpendicular to the installation axis on the supports 8. The required level of installation height is set with hydraulic jacks 2 so that they are lifted from the well and transferred to the racks the pipes could roll along them to the stoppers 31. Base plates can be placed under the support shoes for stability. This position of the platform 1 and the racks 7 is fixed by the stoppers 3 and the lock nut 29. The stand 6 is installed in a vertical position and fixed on the platform 1. The stand 5 is in the recessed position - below the level of the gutter (pos. I, Fig. 6), held by the pusher of the gutter 17 The raised pipe (from the well) is placed in the groove 9 (pos. 1, Fig. 6).

 The fluid supplied under pressure into the rod cavity of the hydraulic cylinder extends the rod connected to the lever 10. The lever 10 starts moving forward around the shaft 12. The upper part of the lever 10 above the shaft 12, movably connected with the groove, raises it together with the pipe. The stand 5 under the action of the counterweight 21, rotating around the axis 19, also rises, following the trough.

 The levers 10, 11 have the same length and are mounted on axes fixed to the platform at the same level, which ensures the movement of the gutter horizontally and parallel to the level of the platform. The trench moves along the radius of the levers in a vertical plane, transferring the pipe from the wellhead to the racks.

 Upon reaching the highest point of rise (pos. II, Fig. 6), the chute with the pipe begins to lower, and the stand 5 assumes a vertical position parallel to the stand 6 and is limited in further movement, resting against the platform frame.

 Shelves 22 are installed and fixed with fingers 24 on shelves 5 and 6 at the required level in height, depending on the height of the stacked row of pipes on the shelves.

 The gutter, falling down, passes between the shelves of the racks, because has a certain limited length, and the pipe ends protruding beyond the gutter, on both sides rests on the shelves and is freed from the gutter (pos. III of Fig. 6). On the upper generatrices of the shelves 23, having a bevel in the direction of the rack, the pipe rolls onto it and then, continuing to move along the rack, takes a certain place, forming the next row of storage. The gutter continues to move down (pos. IV of Fig. 6) and, reaching the level of platform 1, interacts with the switch of the direction of the working fluid in the hydraulic cylinder. The movement of the rod in the hydraulic cylinder lowers the reverse direction and the trough moves to its original (initial) position.

 Having reached the highest point of rise when moving backward (pos. II of Fig. 6), the chute pusher 17 captures the strut 5 and, continuing to move, returns to its original starting position (pos. I of Fig. 6) to receive the next pipe lifted from the well. The cycle repeats.

 After filling the next row with pipes, a shelf 32 with limiters 33 is installed on the rack.

 This is how pipes received from the well are received, transferred to the rack and stored.

 When lowering the pipes into the well, the stoppers 3 are unlocked and the hydraulic jacks 2 platform 1 is lowered to a level that provides a sufficient slope of the racks 7 (Fig. 2) so that they roll down in the direction of the platform. The position of the platform is fixed by the stoppers 3. The tubes of the upper row slide against the upper limiter 33 of the shelf 32. The lower rows of pipes abut the lower limiter 33 of the shelf 32. Thus, the front pipes of the upper row are closer to the platform than the pipes of the lower rows.

 The rack 5 is lowered down and fixed in this position on the platform 21.

 Stand 6 is dismantled and retracted.

 On the shafts 15 (Fig. 4) mounted on the upper generatrix of the flange of the gutter 9, grips 16 are installed so that one stop is located above the gutter, and the second behind the outside of the flange of the gutter.

 The initial position of the gutter is the farthest from the wellhead at the platform level (pos. 9-3 of Fig. 5).

 When the working fluid is fed into the hydraulic cylinder, the rod returns to the inside of the cylinder cavity and thereby drives the lever 10. The groove on the levers 10, 11 starts to move up. The grips are in position IB of FIG. 4. Approaching the pipe, the gripper removes the pipe from the shelf (pos. II of Fig. 4) and it rolls along the gripping guide into the groove (pos. III of Fig. 4). The chute with the pipe along the radius of the levers moves in a vertical plane to the wellhead and stops at position 1 of FIG. 5. After removing the pipe from the chute, the working fluid is supplied to the cavity of the hydraulic cylinder 14 on the other hand, and the chute freed from the pipe returns to its original position. At the same time, in the final phase of the return, the stops 34 mounted on the surface of the platform enter the holes in the bottom of the trough, and interacting with the limiter 17 of the gripper 16, they return it to the ready position for receiving the next pipe.

 The cycle repeats.

 After the row is completely released from the pipes, the shelf 32 is removed and the pipes of the next row roll down towards the platform, all the way to the upper stop 33 of the shelf 32.

 Thus, all pipes from the rack are fed to the wellhead.

 After completing work on the well, hydraulic jacks 2 lower the platform 1 until they are completely unloaded on the chassis and raise the shoes 30 to a level that provides free movement of the installation. Supports 8 are brought horizontally under the rack 7 and are fixed under it. The rack 7, together with the support, is rotated around the axis 26 in the horizontal plane, laid along on the platform, fixed.

 The installation is ready to move to another object.

 Shelves can be installed on both sides of the platform, grips - on both shelves of the gutter, and racks on both one and the other side of the gutter.

 Thus, it is possible to work from any side of the installation, convenient for each specific situation, or immediately to both sides.

 Thus, after analyzing the operation of the installation, we can draw conclusions about the advantages of the installation.

 1. The pipe receiving cycle, transfer and storage on the rack, as well as the pipe feeding cycle from the rack to the well, are built into an optimal process chain non-stop-continuous in a single time and a single basic movement back and forth.

 The cycle takes place in a time shorter than the mechanical speed of raising or lowering the pipe into the well. Thus, the time for processing the pipe is excluded from the total time of hoisting operations.

 Productivity depends only on the performance of the drilling unit-hoist.

 2. The combination of the set, the constructive solution and the interaction of the installation elements exclude the possibility of failure in work.

 3. Ease of control - turning the handle of the distributor of the direction of movement of the working fluid into the hydraulic cylinder from left to right.

 The power of the hydraulic jacks is made from the hydraulic system of the drilling unit - a lift.

 4. Manual labor is completely excluded.

Claims (1)

 Installation for receiving, warehousing and dispensing of downhole pipes and rods during tripping operations, including a mobile platform, on which a mechanism for receiving and transferring pipes with a drive and racks with horizontal shelves and stops located concentrically from a shaft mounted on the platform is installed, characterized in that the platform has hydraulic jacks with stoppers and a mechanism for receiving and transferring pipes is installed on it, made in the form of a chute movably connected with levers, the front lever being connected to the drive, on the upper grappling flanges of the gutter are equipped with clamps and limiters, and through holes of the bottom of the gutter there are through holes for skipping stops installed on the platform surface, pushers are installed on the front end of the gutter, and the installation is equipped with pipe transfer racks mounted on the platform, and the front rack has a counterweight and shelves are installed on the racks with the possibility of moving them along the racks with a bevel of the upper generatrix towards the rack, and the racks are pivotally connected by an axis to the platform with the possibility of their rotation horizontal and vertical planes.

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