SU142598A1 - Device for the production of tripping - Google Patents

Description

The known device for the production of tripping operations in exploration drilling is cumbersome due to that. that schpoirimeinnn jiiififlTH lnuch zdiintorots dietetiu irimsmschki-m dnuhesk-. winch drum.

The described device for the production of tripping operations is made in the form of two upper disconnected and two lower,. planted on a common drive shaft, sprockets, two closed hinge chains, carrying two or more elevators, one of which raises the pipe and the other simultaneously lowers the second. In this case, the device ensures the operation of the elevators without using a winch, and the chain device allows to exclude the feed mechanism, which greatly simplifies the design of the drilling rig. The combination of operations for lowering and lifting a pipe string and their mechanization is carried out only by using elevators and a common drive j to them. I

The drawing shows a prin 11P1 diagram of the ycTponcTja. i

The device consists of two lower leading star U, mounted | on a common shaft 2 connected to the drive 3 and the two upper slaves

asterisks 4, sitting on independent shafts 5. Both pairs of asterisks |

linked together by two common closed chains 6, on which

hinged at certain distances from each other two

elevator A and B..j

After the pipe is unscrewed, the actuator 3 is turned on and the chain rotates counterclockwise, whereby the disconnected pipe or pipe elbow (candle) on one of the elevators (5) is lifted and, repeating the path of the chain that bends the upper sprockets 4, is retracted from smallpox well and is above the point of accumulation of candles. At the same time, the second elevator L repeats the path of the chain that envelopes the lower pair of stars

L 142598-2loch, fits to the sleeve coupling of a pipe, which hangs in the well on the bottom of Jioii DHJIKC installed on the wellhead, and is put on the coupling. 3vTCBaTopbi, moving vertically to the four-way sides, one-minute feu- nously scored the lifting of the pipe string from the well (elevator A) and laying the pipe (sischi) at the accumulator site (elevator B. Then the elevator B is disconnected from the spark plug while unscrewing The elevator L. At this point, the lifting operation of the column is rough for 1H 1 and the cycle is repeated.

Oiiepaiuui descent of the tubing into the well 1, etc., is reversed in reverse order.

In the case of using automatic elevators, the pipes can also be installed in a vertical position with the help of a slot machine.

The described device makes it possible to completely eliminate the operation of descending or lifting the idling elevator and reducing the process to almost two main operations: unscrewing and lifting pipes, screwing the pipes and lowering the string into the well.

Thus, the device mechanizes all time-consuming operations to move the pipe from the axis of the well and back, and to place it in the magazine and retrieve it. In addition, it allows the forced descent of the column. The device can be used for both turning and percussive drilling ai allows the Tool to be fed and consumed during the drilling process.

The Institute “Giproneftema” in its conclusion notes that the combination of the operations of lowering and lifting the drill pipe string with the described device without the use of complicated mechanical mechanisms will simplify the design and reduce the weight of the drilling rig.

..-; The Invention

The device for the production of trips with the use of two or more elevators working simultaneously, one or two elevators, so that, in order to simplify the design of the drilling rig And accelerate the descent and lifting of the column, it is made in the form two upper disconnected and two lower sprockets planted on a common drive shaft, two closed hinged chains carrying (or several) elevators, one of which lifts the candle, and the other one shifts it at the same time.