Traction chain for lowering and lifting a continuous steel pipe
(57) Abstract:The invention relates to the field of operation and servicing of oil wells, and is intended for lowering and lifting a continuous steel pipe. The invention consists in that the traction chain for lowering and lifting a continuous steel pipe contains friction pads, and the friction pad provided with a plug-in rusk, consisting of four parts, two of which are steel, and the two are made of composite material and steel components of bread are placed on the edges of the friction pads, and the other two placed between them, as the composite material is a fiber, and the surface area of the steel components of bread refers to the surface area of components made of composite material, as of 1:1.5. The invention provides a high traction force of the friction pads throughout the period of operation of long steel pipes. 3 C.p. f-crystals, 3 ill. The invention relates to the field of operation and servicing of oil wells using a continuous steel pipes and rods.Known traction chain for lowering and lifting nepra, E 21 B 19/00, publ. 07.12.80, bull. N 45).With the help of the traction chains make the descent and ascent of long pipes with the purpose of carrying out repairs in the well to recover oil and gas.A disadvantage of the known device is that in the process of multiple bends of long steel pipe changes its profile and gets out-of-roundness. This, in turn, reduces the coverage of the friction pads long tubes and, consequently, reduced tractive force generated by the friction pads. The increase of the pressing force pads leads to damage to the crumbs of the friction pads that are performed, usually of hardened steel, having low coefficient of friction.The technical effect of the use of the proposed technical solutions can be expressed in providing a high tractive effort of the friction pads throughout the period of operation of long steel pipes.This technical result is achieved as follows.Traction chain for lowering and lifting a continuous steel pipe contains friction pads, axles, cheeks circuit, and the friction pad provided with a plug-in with the social components of bread are placed on the edges of the friction pads, and the other two placed between them. As the composite material is a fiber. And the surface area of the steel components refers to the surface area of components made of composite material, as of 1 : 1.5.In this case, all components of rusk secured in a socket and are in a floating state within the gap between the socket and the components of rusk.Due to the fact that the friction pad is equipped with plug-in rusk, consisting of four parts, two of which are steel, and two made of composite material, and profile steel components rusk corresponds to the nominal outside diameter of pipe, provided with enough force the friction pads to restore its original section.It is advisable as a composite material using the carbon fiber due to the fact that this material has high strength characteristics and has a high coefficient of friction. The pipe comes in contact over the entire area with a carbon components rusk, having an increased coefficient of friction.The choice of percentage surface area Stalinabad providing the necessary efforts applied to the pipe, and providing the necessary contact in the area of capture.In Fig. 1 shows a General view of the traction chain;
in Fig.2 - section a-a of Fig. 1;
in Fig. 3 - section b-B of Fig.2.The conveyor chain includes a friction pad 1 is inserted into a special slot with the rusk 2, which consists of two steel components rusk 3, located on the edges of the friction pads 1, and two carbon components rusk 4, located between the steel components rusk 3.Traction on the friction pad 1 is made through the axis 5, is equipped with a roller 6 and cheek 7.When working long steel pipe is placed between the two friction pads 1 of the traction chain, the profile of which corresponds to the initial outer diameter of the tube without regard to its deformation (ovality). Pads is transmitted to a compressive force, and thanks to the steel components of rusk 3 this force may be sufficient to deform the pipe from the deformed section in the initial round. The pipe comes in contact over the entire area with a carbon components rusk 4, having an increased coefficient of friction.Due to gaps midnapore area of contact in relation to long steel pipe, that provides high traction chain. 1. Traction chain for lowering and lifting a continuous steel pipe containing friction pads, axles, cheeks circuit, wherein the friction pad is equipped with plug-in rusk, consisting of four parts, two of which are steel, and the two are made of composite material and steel components of bread are placed on the edges of the friction pads, the other two placed between them.2. The circuit under item 1, characterized in that the profile of the steel components rusk corresponds to the nominal outside diameter of the pipe.3. The circuit under item 1, characterized in that the components of bread from composite material made carbon.4. The circuit under item 1, characterized in that the surface area of the steel components refers to the surface area of components made of composite material, as of 1 : 1.5.
FIELD: mining industry.
SUBSTANCE: device has slanting frame with lower rotation drive and localizer, clamps of drilling pipes, stacks for storing drilling pipes. Conveyor is mounted on slanted frame, having adjustable drive, while clamps of drilling pipes having elevator links are fixed to conveyor branches, as well as open localizers and upper drive-swivel, and stacks for storing drilling pipes are placed along movement of conveyor in its upper portion. Upper end of drilling column is placed in well pipeline. At the end of stacks for storing drilling pipes a vehicle is placed with clamps for pipes to provide additional traction force and performing hoisting operations for drilling stalks consisting of several drilling pipes.
EFFECT: higher efficiency.
3 cl, 3 dwg
FIELD: mining industry.
SUBSTANCE: drilling device includes a rotator and hoisting gear, consisting of two force hydraulic cylinder with separator ring between them, through which rod passes, provided with pistons mounted in cylinders. Hoisting mechanism also includes fixed and moveable rollers and flexible links. Moveable rollers are placed inside the hollow of force cylinders and are fixed on outer surfaces of pistons, and fixed ones - on outer surfaces of end covers of cylinders. Force cylinders are made of different diameters, while cylinder for hoisting drilling columns greatest diameter. Plant is provided with two bars, fixed on upper and lower end covers and made in form of guides for rotator, separator ring and end covers are provided with fixing assemblies on front and back supports of post and hydraulic cylinder for raising the post to working position.
EFFECT: higher efficiency, simplified construction.
FIELD: mining industry.
SUBSTANCE: device has platform and on the platform it has oil station with drive, mast and mechanism for feeding drilling tool drive, made in form of hydraulic cylinder, body of which is fixed at platform, and on free and of rod of which a carriage with two rollers is mounted, which are placed along length of rod, two rollers, mounted in upper and lower portion of mast and flexible link, fixed by its ends in place of extreme position of each of carriage rollers with retracted and extended rod of hydraulic cylinder and skirting rollers of carriage on inner side, and rollers of mast - on outer side. Device is provided with additional two coaxially mounted rollers, mounted in zone of connection of end of flexible link, skirting side roller of carriage, and single roller, mounted in zone of connection of second end of flexible link. One of branches of flexible link after carriage roller skirts single roller and each branch of flexible link skirts coaxially mounted rollers on opposite sides.
EFFECT: higher reliability.
1 dwg, 2 cl
FIELD: mining industry, particularly devices specially adapted for blasthole drilling during sinking and supporting mine tunnels.
SUBSTANCE: drilling rig comprises guiding grill mounting, spinner movably installed on drill mounting and extending in longitudinal direction thereof, spinner feeding device and release mechanism for uncoupling kinematical connection between rope and feeding device. Feeding device includes lead drum on which rope is wound. Lead drum end is connected with drill mounting body. Lead drum is made as a friction pulley. Release mechanism is operated rope tightening means and is installed on the drill mounting.
EFFECT: increased efficiency of blasthole drilling.
FIELD: mining, particularly boring rigs adapted to drill blast-holes during mine boring and lining.
SUBSTANCE: boring rig comprises rotator movably installed on guiding frame and provided with feed drive including friction pulley and flexible member passing over the pulley. The flexible member is connected to tightening device and is made as working and idle threads enclosing friction pulley. The friction pulley includes parts having different diameters. Working thread passes over pulley part having smaller diameter in one winding direction. Idle thread encloses pulley part having greater diameter in opposite winding direction. Some ends of working and idle threads are fastened to frame, other ones are connected to tightening device and may be alternately tightened.
EFFECT: increased efficiency of drilling operations due to provision of forced rotator movement in initial position after backward drilling operation.
3 cl, 1 dwg
FIELD: mining, particularly drilling rigs for blast-hole drilling in mine tunnel roof.
SUBSTANCE: drilling rig comprises movable rotator installed on guiding mounting and provided with feeding device. The feeding device includes friction pulley and flexible member passing over the friction pulley. The flexible member includes working and idle branches. The idle branch is connected to tightening device. Guiding mounting includes two telescopic parts, namely post and body. Minor pulleys are secured to body ends. Working branch end is fastened to the post so that working branch serially passes over lower and upper minor pulleys and turns over friction pulley. The tightening device is installed on the post. The post and the body are provided with devices, which prevent mutual post and body rotation and control rotator and body movement order.
EFFECT: increased efficiency of blast-hole drilling in mine tunnel roof in the case of large roof height difference.
4 cl, 4 dwg
FIELD: mining, particularly devices for blast-hole drilling in excavation roof.
SUBSTANCE: drilling rig comprises slider movably installed on guiding column, rotator with drilling rod and feeding device having drive shaft kinematically connected with drilling rod and driven shaft provided with friction pulley. Flexible member connected to tightening device passes over friction pulley. Drive shaft of feeding device is hollow and has axial orifice. Rotator and feeding device are separate members, wherein rotator is installed in lower slider part and feeding device is located in upper part thereof so that drilling rod passes through drive shaft orifice.
EFFECT: increased drilling efficiency due to decreased power necessary for drilling rod rotation and reduced drilling crown blade wear.
3 cl, 2 dwg
FIELD: mining, particularly devices for bore-hole drilling during mine excavation and lining.
SUBSTANCE: rock perforator is made as rotator with supply drive. Supply drive comprises driving drum adapted to wind rope coils and releasing mechanism. Drum end is secured to mine lining. Releasing mechanism breaks kinematic link between rope and supply drive. Driving drum is made as friction pulley. Releasing mechanism is created as accumulation mechanism or weight fastened to idle rope branch.
EFFECT: provision of constant supply speed, elimination of emergency situations and increased operational reliability of perforator as a whole.
FIELD: mining, particularly devices for bore-hole drilling in mine tunnel.
SUBSTANCE: boring rig comprises rotator with feeding assembly movably installed on guiding frame and including friction pulley and flexible member passing over friction pulley. The flexible member has working and idle branches connected with tightening device. Working and idle branches are made as block and tackle systems having the same order.
EFFECT: increased efficiency due to provision of stable drilling of rock having different hardness.
FIELD: oil and gas industry.
SUBSTANCE: rotational supply system includes a traverse of a supporting assembly with a rotator, which is arranged in the traverse, a traverse movement drive, a polyspast system with blocks and flexible connections forming the branches of the working and reverse travels. Blocks of the branch of the working travel are arranged in lower part of the mast, and blocks of the branch of the reverse travel - in upper one, and a depth sensor with an actuating element and a position fixation device of the actuating element is arranged in the block of the branch of reverse travel. A garland is meant for supply of blowdown agent to the drilling machine. Arrangement of the sensor in the block of the branch of reverse travel allows reducing the vibration action on the actuating element as much as possible, which leads to improvement of the sensor actuation accuracy.
EFFECT: improving the quality of blasting operations at the open pit and reducing explosive consumption owing to obtaining wells of the specified depth.