SU947380A1

SU947380A1 - Rotary bit

Info

Publication number: SU947380A1
Application number: SU782665124A
Authority: SU
Inventors: Тариэл Георгиевич Агошашвили; Поликарп Автономович Палий; Борис Николаевич Кутузов; Вадим Петрович Якимов; Геннадий Моисеевич Осипов; Валерий Авраамович Бирман; Николай Васильевич Дынин
Original assignee: Московский Ордена Трудового Красного Знамени Горный Институт
Priority date: 1978-09-22
Filing date: 1978-09-22
Publication date: 1982-07-30

Description

Изобретение относитс к буровой технике, а именно к шарошечньм долотам дл бурени скважин с очисткой забо газообразным агентом.The invention relates to a drilling technique, namely, roller cone bits for drilling wells with bottomhole cleaning agent.

Известно шарошечное долото, содержащее центральное продувочное сопло, каналы в лапах, установленную в центральном сопле втулку с боковыми окнами, расположенными выше каналов в лапах, и отражатель, закрепленный в верхней части втулкиС1 .Known roller bit containing a central purge nozzle, channels in the legs, a sleeve installed in the central nozzle with side windows located above the channels in the legs, and a reflector fixed in the upper part of the sleeve C1.

Недостатками данного долота вл -;ютс отсутствие шламозащиты его опор и невозможность применени в нем известных шламозащитных устройств так как сепараторна втулка занимает по высоте всю ниппельную полость долота.The disadvantages of this bit are the absence of slime protection of its supports and the impossibility of using known slime protection devices in it, since the separator sleeve occupies in height the entire nipple cavity of the bit.

Наиболее близким к предлагаемому по технической сущности и достигаемому результату вл етс шарошечное долото, содержащее лапы с ниппельной чатью и каналами дл подачи смазывающего агента в опоры шарошек, центральное продувочное сопло с установленной в нем смазкоотделительной втулкой с боковыми окнами и конусным отражателем, закрепленным в её верхThe closest to the proposed technical essence and the achieved result is a roller bit containing paws with nipple part and channels for supplying a lubricating agent to the cones of the cones, a central blowing nozzle with a lubricating sleeve installed in it with side windows and a conical reflector fixed to its top

ней части, и обратный клапан дл защиты опор от шлама Сз.parts, and a check valve to protect the supports from sludge Sz.

Недостатком данного долота вл етс низка .стойкость из-за малой нгшежности обратного клапана и неполного отделени смазывающего аген;га от воздуха.The disadvantage of this bit is low resistance due to the low drainage of the check valve and incomplete separation of the lubricant agent from the air.

Цель изобретени - .повышение стойкости долота за счет более надежной The purpose of the invention is to increase the stability of the bit due to more reliable

10 защиты опор шарошек от шлама и более полного отделени смазывающего агента от воздуха.10 to protect the supports of the cutters from sludge and more fully separate the lubricant from the air.

Поставленна цель достигаетс тем, что обратный клапан размещен внутри The goal is achieved by the fact that the check valve is located inside

15 смазкоотделительной втулки с перекрытием ее боковых окон, причем клапан выполнен из эластичного материала и имеет форму цилиндрического стакана, дно которого прикреплено к конусному 15 lubricating sleeve with overlapping of its side windows, and the valve is made of elastic material and has the shape of a cylindrical cup, the bottom of which is attached to the conical

20 отражателю.20 reflector.

На чертеже изображено шарошечное долото с частичным вырывом, общий вид. NThe drawing shows a roller bit with partial digging, general view. N

Долото содержит центральное продувочное сопло 1, размещенное в полости 2 ниппельной части лап 3. В центральное сопло 1 ввернуто шламозащитное устройстве), вк.пючак сцее корпус 4 с боковыми окнами 5 и размещенный внутри The chisel contains a central purge nozzle 1 placed in the cavity 2 of the nipple part of the paws 3. Screw protection device is screwed into the central nozzle 1), the body 4 with side windows 5 and placed inside

Claims

30, it has a check valve made of an elastic hollow cylindrical insert, which is fixed in the upper part of the body 4 by means of a bolt 7 and a nut 8 and its side surface 9 blocks the windows 5. The body 4 is made in the form of a separator sleeve, having at one end a thread for connection with the central nozzle 1, and on the other a conical cap 10 that performs the functions of a separator. The insert b is provided with a self-sealing cuff 11 of one-sided action, which is made at the lower end of the insert, as well as with transverse 12 and 13 longitudinal stiffening ribs located on the inner side surface of the insert b, 3 legs in the legs of the insert 14, connecting the cavity 2 with support cavities sharoshek (n shown below the side windows 5 of the casing 4. During the drilling process, the air flow with a lubricating coolant agent located in it (for example, with oil at the entrance to the nipple cavity 3 bits interferes with The cone cap 10 of the housing 4, as a result of which the lubricant-cooling agent is released from the stream, condenses on the cone surface of the cap 10, and is thrown to the walls of the nipple cavity 2, through which it flows down to its bottom. part of the air through the channels 14 in the paws 3 enters the supports of the cutters, lubricates and cools them Purified air through the windows 5 acts on the side surface 9 of the elastic insert b, causing the latter to deform in the transverse direction. In this position, the check valve is open and the cleaned air flows freely into the central purge nozzle 1 and gave it to the bottom of the well. When stopping the air supply of the insert b, due to the elastic properties of the elastic material, it restores its original shape and the central nozzle 1 becomes isolated from the bottom. The presence of a self-sealing cuff 11 allows the inner cavity of the central nozzle 1 to be reliably sealed and to prevent liquid sludge from penetrating into the nipple cavity 2 of the bit, and the stiffening ribs 12 and 13 impart the required elasticity to the elastic insert 6. This embodiment of the bit allows for forced lubrication and cooling of the supports while at the same time protecting them from sludge, and the device used for these purposes has a simple design, is reliable in operation and allows to significantly reduce the hydraulic losses in the check valve, since it works during lateral deformation from air pressure. All this increases the resistance of the roller bit, especially when drilling in watered rocks. Claim 1. A cone bit containing paws with a nipple part and channels for supplying a lubricant to the cones of the cones, a central blowing nozzle with a lubricating sleeve installed in it with side windows and a conical reflector fixed in its upper part, and a check valve to protect the supports from sludge, characterized in that, in order to increase the durability of the bit due to more reliable protection of the isrosche supports from the sludge and more complete separation of the lubricating agent from the air, a check valve is placed inside kootdelitelnoy sleeve with overlapping Skokova its windows. 2. A hammer according to claim 1, characterized in that the check valve is made of an elastic material and has the shape of a cylindrical cup, the bottom of which is attached to a conical reflector. Sources of information taken into account in the examination 1, USSR Author's Certificate No. 211647, cl. Е 21 В 9 / 08,1966.

2. USSR author's certificate No. 571574, class, E 21 B 9/10, 1974.

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