SU1435750A1 - Arrangement for running, making, detaching and rotating drill pipes - Google Patents

Abstract

The invention relates to the mining industry, in particular to devices for 1 mechanization of auxiliary operations. and m. used on drilling rigs with a movable rotator. The purpose of the invention is to improve the convenience and safety of work when performing tripping operations and ensuring pipe screwing (T) during the descent of the drill string T into the well. On the spindle 1 of the movable rotator with the help of the splines and the detachable locking ring 3, the nozzle 4 is fixed with an annular protrusion 9 on the lower ring. The nozzle 4 is loosely fitted with the possibility of a limitedly moving axial movement of rigidly connected parts 5 and 6, which form the body (K). The lower part 6 of the latter is provided with an assembly 7 for gripping the drill bit T, which is connected with it by means of the hinge 8. The peripheral part of the protrusion 9 forms the cam half-coupling (PM) JO. The end of part 5 K is equipped with PM 12. At the same time PM 10 and 12 form a cam clutch for transmitting rotation. Between the protrusion 9 and the surface of the part 5 K there is a spring assembly with springs i 1 calibrated for a minimum force corresponding to the mass of one drill T. At the threaded end 14 of spindle 1 is mounted; removable HaKOHe4HjiK. When lifting the device, the PM 10 engages with the PM 12, the springs 11 are compressed. When unscrewing the threaded joint between the drill string and raising the T force of the spring 1i, the housing with the T suspended on it is pushed upwards. 1 hp f-ly, 4 ill. e 4 SAE SP --J 01 Fig1

Description

one

The invention relates to mining, in particular, to devices for mechanizing auxiliary operations associated with drilling wells and can be used: Run-and-go, pig-and-tine spinning drill-and-rub on drilling equipment with subwoofer rotator.,

. The aim of the invention is to improve the convenience and safety of work when performing tripping operations of HSh5, as well as to ensure screwing of pipes in case of drilling string of drill pipe into the well.

FIG. Device shown} Longitudinal section :; figure 2 - section a - a in figure; on fig.Z - sechehshe B on figs; in fig. 4 - node I in FIG.

The device consists of a movable rotator with a spindle 1 (Fig. 1), on which using splines 2 (Fig.2) and a detachable locking ring 3 a nozzle 4 is attached. The arbor 25 is poorly worn with the possibility of limited moving axial displacement rigidly soy.dd-1nennye Mlusda are parts 5 and 6, forming a body (movable) device. part 6 of Korggus 30 is equipped with a 7 dd gripping unit for drill pipe; connect it with the hinge 8.

The nozzle 4 of the spindle I is provided on the 35th lower end 11 with an annular protrusion 9. The peripheral part of this top-end forms the cam half-coupling 0. Mshk, - do the protrusion 9 and the inner surface. .1 and 3) from the burn string (not shown), which is achieved by the radial displacement of the movable rams of this unit and their exit from the slot of the upper tube lock. Thereafter, the device is lifted above the wellhead and an expandable tube is inserted into the gripper assembly 7, which is clamped by the gripper assembly 7 of the device. The expandable tube is then lifted upward by means of a movable rotator and lowered until the nipple end of its lower lock falls into the sleeve of the upper tube lock of the drill string suspended on the slider. After that, the right rotation of the spindle 1 of the sub-base: the rotary and, the screwing of the expandable pipe with the drill string and the threaded end 14, occurs. At the same time, the upper (coupling) locking of the expandable pipe with the threaded end 14 is screwed up: relative to the fixed pipe 4. At the end of the screwing, the drill string rises, is released from being caught by the spider, and the drilling process can be continued,

Lifting tool.

Before lifting the tool at the end of drilling it is necessary to disconnect the connection of the upper part of the drill string with the threaded end 4,

The top of the body 5 of the housing is 40 for which the drill string is held by the spring assembly with springs 1. The end of the upper part 5 of the Korggus is equipped with a cam half coupling 12. The coupling half 10 and 12 are adapted to interact with each other. The spring 5 springs 11 of the spring assembly (six in their thorough embodiment) have limiters 13 of stroke and tariffs for minimum force correspond to the spider and include the left rotation of the movable rotator. Then, the spider is moved to the release position of the drill string and is lifted by one pipe length and the drill string is again mounted on the spider. After that, the device is raised up. Since the movable body is connected with the boring sounding numerically the mass of one borilonnoy, the cam coupling half 10

Noah pipe. At the threaded end 14 of the spindle 1, there is a removable (screwed onto the threaded end) tip 15 (FIG. 4) with an internal KOi-goose face.

The device works as follows.

Build-up tool while drilling.

55

it engages with a cam one by means of a lumuff 12, and the spiral springs are compressed. Then, the left rotation of the movable rotator in the cutter is turned on, unscrewing the threaded joint between the drill string on the spider and the raised pipe. As soon as this thread is unscrewing

 for which the drill string is held

They are spider and turn on the left rotation of the rolling rotator. Then, the spider is moved to the release position of the drill string and is lifted by one pipe length and the drill string is again mounted on the spider. After that, the device is raised up. Since the movable body is associated with the drill string, the cam half coupling 10

is engaged with the cam half coupling 12, and the coil springs 1 are compressed. Then, the left rotation of the movable rotator is turned on, as a result of which a screw connection is unscrewed between the drill string mounted on the spider and the raised pipe. As soon as this thread is unscrewing,

the load on the stationary case drops sharply and with the force of the springs 11 the movable case with the pipe suspended on it is pushed upwards. As a result, the nipple of the raised drill pipe comes out of the upper end coupling mounted on the spider of the drill string, as a result of which there is no need for any additional actions to release the threaded joint. Then the raised pipe is retracted to the side, released on the rack and freed from the knot 7. After this, the device is brought in to grip the next pipe of the drill string and the work cycle is repeated (except for a single operation, releasing the threaded horse, and 14 from the top drill string).

Descent tool.

Although this operation is practically absent when drilling seismic and other shallow wells, since these wells are drilled in one trip, the design of the device allows, if necessary, this type of work

The descent of the first pipe does not require any explanation, since it does not require the connection of the threaded connection. The next pipe is lowered in the order described above, with the difference that this does not connect the upper threaded end of the pipe to the threaded end 14 of the spindle 1. This is achieved by using a detachable tip 15 that is screwed onto the threaded end 14 before the tool is lowered and removed the end of this work, Svitchi

five

The expandable pipe with a column is realized with the right rotation of the spindle 1 of the rotator due to the frictional force between the cone of the removable tip 15 and the end of the drill pipe coupling.

Claims (2)

Claim 1. Device for launching, screwing-unscrewing and rotating drill pipes, including a spindle of a movable rotator with an annular protrusion at the lower end, a housing connected pivotally to a gripper assembly of a drill that is fixedly movable on the spindle, jaw coupling for transmitting the rotation formed by the cam half couplings located on the spindle and the housing, respectively, differ in that, in order to improve the convenience and safety of work when performing the trip ations, it is provided with a spring assembly, tariro-: bathrooms to the minimum force soot- .vetstvuyuschee force acting single-mass; hydrochloric drill pipe placed inter- 0 / dy annular projection at the lower end of the spindle and the inner surface of the housing. 2. The device according to claim 1, which is designed so that, in order to ensure the screwing of the pipes when the drill pipe string is in the well, it is equipped with a removable tip mounted on the threaded end of the spindle 0 five five with an inner conical surface to interact with the end of the drill pipe coupling. IFIs .4