SA91120222B1 - Transport guide forming machine - Google Patents

Abstract

Abstract: The conductor guide forming machine is for expanding the end of a tube outward to form a guide guide and includes a movable heating device on a base to cause electrical induction heating of the end of the tube to be expanded outward. The forming tool cart equipped with a forming tool mounted on the cart in a way that allows for rotation is moved by means of a hydraulic cylinder fixed on the base and connected to the forming tool cart in order to insert the rolls of the forming tool inclined at an angle in the pipe required to be expanded. and based on it. A drive motor installed on the forming tool cart rotates the forming tool synchronously with the movement of the rolls inside the tube to expand its end.,

Description

The AY forming conductor guides Cia gl complete BACKGROUND This invention relates to a machine for forming conductor guides. Conductor guides are used in outer casings in offshore areas used in the drilling industry. The offshore drilling industry uses a structure commonly referred to as a casing to support a platform© carrying drilling equipment, ancillary equipment, workspace and accommodation. The cover usually consists of; The legs, at least, are connected together by a structure of horizontal and diagonal permanent members, so that the base of the structure, which rests on the sea floor, is wider than the upper part of the structure, which protrudes above the usual level of water. The casing and platform can accommodate one or more iad equipment. When drilling, the borehole wire extends through the hull between the uprights to the seabed. When lowering the drill bit to start drilling, as well as drilling operations, it is necessary to guide and support both the drill bit and the drill wire against the influence of waves and currents that are usually encountered in open water. This is done by using conductors that extend Ly along the body. Connector guides are used to guide the connector into housing. Connector guides are used to guide the connectors into place in the housing. Yo-guides for conductors are formed from hollow steel tubes with an inner diameter greater than the outer diameter of the conductor. It is preferable that the upper part of the guide of the connector be formed in the form of a cone whose inner upper edge diameter is greater than the diameter of the lower tubular part of the guide of the connector. This shape, which gradually widens upwards and outwards, allows for a greater margin of error when lowering the conductor. Depending on the depth of the water and the number of wells, a hundred or more conductor guides may need to be used in the hull. The manufacture of guides for connectors was usually done in two ways: manufacturing by piece or by pressing. It includes piece manufacturing; Cut three separate metal pieces of the specified size and then shape them into the desired conical shape with one metal at a time, using a VY piston. After that, the three pieces are welded to a tubular part of a conductive guide to form the conical part of the guide. As for pressing, it includes heating a tubular part in an oven and then transferring it to the . A molding tool is used to form the guide. During this process, Cus piston may require the use of forces of between two thousand and three thousand tons. Both methods are time consuming and labor intensive and require additional materials and tools to form 701 connectors of various sizes. Piece manufacturing usually requires up to an hour of labor per connector. As for pressing, it is limited to certain cone sizes, as a result of wrinkling the cone. As well as installing the piston permanently and supporting it with appropriate foundations; This is because this equipment may weigh more than three hundred tons. Which is used as a basis 11,774,944 The French patent No. a thin-walled tube with tongues of a gas flame to lubricate it and a shaft pressed longitudinally in the way of a carriage bearing a rack gear engaged with a pinion in a base unit; Where the column replaces a plate that carries in turn three inclined rollers arranged in regular angular spacing that interlock with the end of the tube and expand outwards. To form an A, as US Patent No. 31107 discloses the exhaust pipe of a motor vehicle, where Jie affects the ends of the tubular tool with a clamping device and a running device. The operating device may include four rollers with shaped ends that press into the end of the tubular tool while they are rotated by a hydraulic motor to form a spherical expansion of the end of the tubular tool. To form the end of a connector guide comprising RITE : | the following: base; and a cart for the shaping tool mounted on the utility so that it is movable between the first retracted position and a second position for shaping; And a forming tool mounted on the Yo tool cart in a way that allows rotation and includes a circular plate intrinsically mounted on it dsl rolls

VY | zam l pe formation a turning device installed on the forming cart to rotate the forming tool; a moving device mounted on the base and engaging with the forming tool cart to move the forming tool cart between - the first and second positions; And a heating device installed on the carriage in a way that allows movement to heat the conductor guide in a pattern of increasing temperatures towards its end while the conductor guide remains stationary. Z © It is distinguished by the fact that the base consists of four horizontal support members that are connected at their ends to the first and second boards to form an essentially rectangular structure; Forming rolls include conical expansion rolls and edge forming rolls; The drive mechanism includes an electric motor driven by the forming tool; The moving means also includes a hydraulic cylinder, and the heating method includes an induction heating device. 0 Such a machine can accommodate a variety of cone angles and sizes; it does not require permanent assembly, and it reduces the time, labor and materials needed to manufacture a tool connectors. And when the motors are running after the tube has been heated to the temperature

AS pall desired. To rotate the forming tool, the forming rollers of the VO conical guides come into contact in a way that allows rotation on the forming machine with the inside of the tube and causes the heated end of the tube to expand outward when the forming tool carriage and the forming tool continue its movement in the direction of the tube. The roll forming ends touch the expanded end and compress it to compensate for the slight decrease in wall thickness that occurs during asd forming. After the tube has been cooled, it is extracted from the machine and another part of Ye 1 shows the tube in the position ready for shaping. The forming tool can be cooled with water to prevent failure of the bearings and rollers during the forming process when they are in contact with the pipe.

Nn: A brief explanation of the drawings z The invention is illustrated schematically with the accompanying drawings, for example: i Shaping the conductor guides according to the invention. AY Figure (1) Side view before contacting them (1) Figure (7) Detailed view of the forming tool shown in fig. With the end of the pipe to be expanded. © After it is in contact (Y) Detail of the forming tool shown in fig. (VY) Fig. | With the end of the pipe expanded. Include (01) Connectors Af Referring to the drawings, we find that the forming machine, device (V1), forming tool (VE), and forming tool cart (VY) are generally based on 0 on ( VE) for moving the tool cart (Yo) and moving device (V1) for the forming tool (VA) drive (YY) and heating device (VY) base length of four supporting members (4 7 (Two of these are shown in (VY). The base consists of (776) attached at its end to the first and second plates. (YE) Each supporting member is connected in Figure (1). By any suitable means such as welding to form an essentially rectangular structure. As shown, (YA) and (0) rest on their edges so that (YA) the plates (77) and (1) in the figure have a tubular shape in (YE) the supporting members ( 76) Horizontal These supporting members 1. The preferred embodiment, but they may take any suitable shape, such as the crossbar shape, with an inner diameter (Ye) of four hollow permanent legs (V£) The tool cart consists of This leads to (VY) on the base (Y£) _in excess of the outer diameter of the supporting members Ye between the first position A (VY) on the base (VE) allowing sliding movement of the tool cart Retracted and second position to form the conductor guide. The first receding subject is evident from (©). Wheels can be installed on the supporting posts: Vertical boards (VY) are installed in a rolling manner on the base (V6)

Jie by any appropriate means (1) firmly among the supporting lists (V1) (YE) « (YY) A

The first and second vertical plates (VY) and (VE) run across the width of the tool carriage (1) and the third vertical plate (7) runs along its longitudinal axis and is firmly attached to the second plate (VE) and supporting legs (Fe) The forming tool (V1) is carried on the tool cart (V£) and is installed in a © shape that allows rotation on the first vertical plate (YY), while the forming tool ( V1) It consists of an intrinsically circular plate (VA), conical guide-forming rollers (£4), and end-forming rollers (47). As shown in Figures (7) and (©), the rollers (40) and (47) Rotatably mounted on a frame (££) and firmly attached to the GAN plate (FA) The frame (££) guides the roller forming guides (£4) to manufacture with the circular plate (VA) 0 angle five Approximately forty degrees so that the front edges of the rolls (£0) extend to the Jala connector guide (£7) to expand its edge towards the outside and form a conical part (£A) as shown in the figure (©) when moving the tool cart (V£) and the forming tool (V1) to the second position of forming the connector guide. It is preferable that the forming rollers of the guides (£0) are conical as shown in the drawings. The conical Vo shape is preferred because it leads to the rolling speed at the inner edge of the expanded part of the connector guide being equal to the rolling speed at the outer edge of the expanded part of the connector guide. This reduces friction and prevents the rolls from slipping on the tube wall, which would cause the tube to flatten. The conical shape of the roll (£0) can be determined using the formula: a = — Y. where Ry is the radius of the inner edge of the expanded part of the conductor guide 2 2; Ry is the radius of the outer edge of the expanded part of the conductor guide : 1 is the radius of the cylinder at the point of contact with the inner edge of the expanded part 12 is the radius of the cylinder at the point of contact with the outer edge of the expanded part Although non-conical rollers can be used, this requires YO more energy and leads to Increased wear of the rollers Contacting the edge forming rollers a

Lv (£Y) the outer edge of the conical part (£4) slightly contacts in order to compress it. This offsets the slight decrease in wall thickness that occurs at the outermost edge. ) The forming tool (VT) has the shape of an electric motor © (04) and a shaft (OF) and as shown in Figure (1) the electric motor (04) mounted on a horizontal plate (08) extends from the vertical plate Third (FV) The electric motor (04) is operationally linked to the forming tool (11) by means of the movement drive shaft (0) which rests on bearings (07) adjacent to plates (7” and (VE) The means of movement is available (01) for moving the forming tool cart (V8) between 0 and its first and second positions in the form of a hydraulic cylinder (0A) mounted on the base (VY) and connected to the forming tool cart (16). hydraulic fluid to the hydraulic cylinder (0A) from an undisclosed source via the hydraulic fluid lines (10).The heater (VY) is an induction device that heats the conductor guide (£1) without contact with it. A direct electric current through a coil VO| in the heater (YY) via power transmission lines (TY) generates a magnetic field around the coil. This magnetic field generates an inductive electric current in the conductor guide (£1) which in turn generates heat due to the high resistance of the steel tube from which the conductor guide (£7) is formed. The design of the heater (YY) provides a specific 'Z' thermal pattern It is intended for ease of forming where the end of the conductor guide to be expanded is the Ye | the hottest.In a preferred embodiment the heating pattern is as follows: A length of approximately 0.1 mm (four and a half inches) of conductor guide heated to the inside of the Ee | to be expanded to approximately 7780 m (77080 °F) and the next 0410 mm (five-and-a-half inch) length heated to 7/4*m YA °F) and a length of 70,400 mm heated (1 in) the next to approx. 071*m (E00 1°F) and the Yo heats the length of the yo 1 mm (1 in) next to approx. 177*m (040°F). YVY | ): |

The expansion takes place in the first 777 mm (ten and a half inches) heated. As shown in Figure (1); the second plate (YA) is provided with an opening that allows the tube to pass through it and through the open center of the heating device (CTY) Z and a clamp (14) is used to attach to the second plate (YA) or a separate piece of equipment to hold the tube in position during forming operations. On operation the piece of tube to be used as a guide for the conductor (£7) is firmly held by the clamp (14); and so that it extends through the second plate (YA) and the heater (TY) the heater (VY) is rolled into position on a platform (17) on the lower supporting members (Y£) and then used to inductively heat the conductor guide (£7) 0 | to 7601°F (YF) approx. in the case of a conductor guide machined from 1.7 mm (½ inch) steel with an outer diameter of 711 mm (YA inches); And it takes this heating; minutes approx. When the desired temperature and thermal pattern is reached; The electric motor (01) is started to rotate the forming tool (YT) and then the hydraulic Vo cylinder (0A) is driven to move the forming tool carriage (V£), the (V1) dsl tool and the electric motor ( 04) and the drive shaft (OY) from the first position retracted away from the connector guide (£7) towards the connector guide (45). The guide forming rollers (0) contact the inner surface of the connector guide (£7) when they move forward towards the guide Connector 0 >> and causes the hot end of the connector guide (£7) to expand outward to form the 0-conical (EA) portion of the conductor guide (£7) as the edging rolls (47) come into contact with the edge of the conical portion (58) and results in slight compression of the edge in the 0 > radial direction inward along the same axis of expansion in order to expose the slight thickness reduction that occurs during the forming process.The forming process takes approximately five seconds when the tip is hot conductor guide (£7) at Ala Yo | _plasticity and when a compressive force of approximately 0 lb ton is applied by the hydraulic cylinder (28). In the preferred embodiment the former (V1) is rotated at a speed of ©*1 cycle in md 0 1

almost exact. The rolls (£4) 5 (£7) being relatively smaller in diameter than the inner part of the conductor guide (£7) rotate at a speed of approximately Youu rpm. In the preferred embodiment a heat shield (TA) is placed On the frame (44) - so that it extends in front of the rollers (£4) and (7;) to help protect their © bearings from heat. Also Cooling of the roller bearings (£0) and (£Y) After shaping, reverse direction in the hydraulic cylinder (0A) in order to move the forming tool cart (€ 1) back again to its retracted position so that the forming tool (V1) in Ala does not remain in contact with the hot conductor guide (£7) and after cooling (Sa) by passing running water over the conductor guide (£7) and the conical part (48) Ye, the conductor guide (£71) is cut to the appropriate length away from the conical part (EA) Then the complete connector guide consisting of one piece is removed and the clamp (716) is loosened, then an appropriate length of the connector guide tube is moved to the forming position and the process is repeated.During the forming process, it comes into contact with the rod (Vo) that is installed on the forming tool cart (0) Heater (YY) and cause it to be moved away from the end of the conductor being 0 widened to prevent interference between the heater (YY) and the expander end and the forming tool L(V) | Angular arrangement of rolls allowed (£0) and (vii;) the operation to form the conductor guides in several sizes without modification of the equipment. Although only one drive motor was shown, it is possible to use two motors connected to the drive shaft by conveyor belts or chains AS al - YY | ; oC

Claims (1)

“0. Elements_of protection 1-1 forming machine to form a conductive guide and includes:- - Y base (11); the tool cart (VE) is attached to the base (11) in order for it to move between v first position Retracted and second position for forming; JS tool (171) ¢ is rotatably mounted on the tool cart (VE) and includes a round plate 8 substantially (YA) with forming rollers (fv) 47) 1 rotatable in it; Drive device (VA) mounted on tool cart (V6) to rotate tool cart (1 1); drive device (01) mounted on base (VY) and engaging tool cart A to move tool cart between the first and second positions, and a heating device q | (YY) movably mounted on the base (VY) to heat the guide 0 of the conductor in a pattern in which the temperatures gradually increase towards its free end 11 while the guide of the conductor remains stationary; b) AY is characterized by the fact that the base (VY) consists of four horizontal supporting members (; 7) VY connected at its ends with the first and second plates (77; (YA) to define an essentially rectangular 0 structure; it includes rollers Forming Yo conical expansion rolls (£4) and end forming rolls (47;); drive includes 1 electric motor (04) engaged with forming tool (V1) drive means (01) includes VY hydraulic cylinder (54 ); The heating medium includes an induction YA (YY) NAY |