RU2007144849A

RU2007144849A - DEVICE AND METHOD FOR ROTARY-SPINDLE DRILLING OF WELLS

Info

Publication number: RU2007144849A
Application number: RU2007144849/03A
Authority: RU
Inventors: Геннадий Андреевич Кулябин (RU); Геннадий Андреевич Кулябин; Владимир Вениаминович Долгушин (RU); Владимир Вениаминович Долгушин; Малик Мансурович Касимов (RU); Малик Мансурович Касимов
Priority date: 2007-12-03
Filing date: 2007-12-03
Publication date: 2009-06-10
Also published as: RU2364698C1

Abstract

1. Устройство для роторно-шпиндельного бурения, содержащее бурильную колонну с утяжеленными бурильными трубами, осевую опору, выполненную в форме шпинделя с корпусом, полым валом с отверстиями и уплотнениями, и центрирующие элементы, отличающееся тем, что между бурильной колонной и корпусом шпинделя встроен дополнительный корпус устройства, внутри дополнительного корпуса расположен соосно торсионный вал, присоединенный к валу шпинделя, в верхней части дополнительного корпуса встроена верхняя траверса, в которой выполнены отверстия с регулируемыми по диаметру струйными насадками для прохода промывочной жидкости и гнездо, в верхней части дополнительного корпуса встроена нижняя траверса с отверстиями для прохода через них промывочной жидкости и центральным граненым отверстием, в котором размещают граненую часть торсионного вала, между верхней траверсой и верхней частью торсионного вала установлена верхняя пружина, работающая на сжатие, в дополнительном корпусе на торсионный вал надето от одной до трех параллельно и/или последовательно работающих на сжатие пружин с их опорой на пластину с отверстиями для прохода промывочной жидкости и на буртик в нижней части торсионного вала, над указанными пружинами установлено кольцо и патрубок для регулировки величин поджатия этих пружин, а внутри дополнительного корпуса возле его внутренней стенки установлена одна или две пружины, работающие параллельно или последовательно на сжатие между собой и/или совместно с пружинами, установленными на торсионном валу, при этом пружины, которые установлены возле дополнительного корпуса, также установлены на пластину и н1. A device for rotary spindle drilling, comprising a drill string with weighted drill pipes, an axial support made in the form of a spindle with a housing, a hollow shaft with holes and seals, and centering elements, characterized in that an additional one is inserted between the drill string and the spindle housing the device’s body, inside the additional housing there is a coaxial torsion shaft attached to the spindle shaft, in the upper part of the additional housing there is an upper beam, in which holes with p diameter adjustable nozzles for flushing fluid passage and a socket, in the upper part of the additional housing there is a lower traverse with holes for passage of flushing fluid through them and a central faceted hole in which the faceted part of the torsion shaft is placed, between the upper traverse and the upper part of the torsion shaft the upper compression spring in an additional housing on the torsion shaft is worn from one to three in parallel and / or sequentially operating spring compression with x resting on a plate with holes for the passage of flushing fluid and on the shoulder in the lower part of the torsion shaft, a ring and a nozzle are installed above the specified springs to adjust the values of the compression of these springs, and one or two springs are installed inside the additional housing near its inner wall, working in parallel or sequentially for compression between themselves and / or together with the springs mounted on the torsion shaft, while the springs that are installed near the additional housing are also mounted on the plate and

Claims

1. A device for rotary spindle drilling, comprising a drill string with weighted drill pipes, an axial support made in the form of a spindle with a housing, a hollow shaft with holes and seals, and centering elements, characterized in that an additional one is inserted between the drill string and the spindle housing the device’s body, inside the additional housing there is a coaxial torsion shaft attached to the spindle shaft, in the upper part of the additional housing there is an upper beam, in which holes with p diameter adjustable nozzles for flushing fluid passage and a socket, in the upper part of the additional housing there is a lower traverse with holes for passage of flushing fluid through them and a central faceted hole in which the faceted part of the torsion shaft is placed, between the upper traverse and the upper part of the torsion shaft the upper compression spring in an additional housing on the torsion shaft is worn from one to three in parallel and / or sequentially operating spring compression with x resting on a plate with holes for the passage of flushing fluid and on the shoulder in the lower part of the torsion shaft, a ring and a nozzle are installed above the specified springs to adjust the values of the compression of these springs, and one or two springs are installed inside the additional housing near its inner wall, working in parallel or sequentially for compression between themselves and / or together with the springs mounted on the torsion shaft, while the springs that are installed near the additional housing are also mounted on the plate and and a shoulder in the lower part of the torsion shaft, and the lower end of the torsion shaft is made with thread or with splines.

2. A method for rotary-spindle drilling, comprising transmitting torque and axial force to a bit, characterized in that the device according to claim 1 is used, while the torque from the drill string with drill collar is transmitted to the spindle shaft and bit through the lower beam, torsion shaft and sub, hydraulic axial force g _r generated in the flow of washing liquid is supplied through the rotating shaft and the spindle shaft and the axial support loaded in the spindle axial force T _n, equal to the difference between the weight of the relieved portion on the downhole b -sterile columns with collar and the magnitude of force G _g, while the remainder of the axial force required to ensure the axial force G to the bit from the drill string is transmitted to an axial spindle support through a built-in auxiliary housing and the spindle housing, wherein the weight of the drill string is transmitted to the shaft spindle through compression steel springs, and when forming a drill string with drill collar, the length of its lower weighted part l _U is determined by the formula:

,

where c is the speed of sound in the material of a dynamically active section of a drilling tool, m / s;

- the frequency of axial vibrations of the teeth of the bit, taking into account the deformation of the bottom of the well, Hz;

- the length of the device from the bottom to the weighted drill pipe, m