MX2013002621A - Rotation device with high anticorrosive properties for controlling pressures in the wellhead. - Google Patents

Abstract

The present invention refers to a rotation device with high anticorrosive properties for controlling pressures, which is intended to control leakages in well drilling, which has a quick coupling mechanism, support of high pressures, as well as replaceable and long lasting sealing elements. This document refers to a rotation device with high anticorrosive properties for controlling pressures that is intended to control leakages in well drilling, which due to the adjustment mechanism thereof, based on a couple of clamps and a hydraulic system, and a bearing with a particular arrangement of bearings and gaskets, may work by being rotated at constant speeds of 280 rpm at a maximum pressure of 3000 psi and supporting pressures of up to 5000 psi in a static form. Also has a seal duration of up to 5000 hours, which is operated at pressures of from about 1000 psi to about 3000 psi.

Description

ROTATING DEVICE WITH HIGH ANTICORROSIVE PROPERTIES FOR PRESSURE CONTROL IN WELL HEAD OBJECT OF THE INVENTION The present invention relates to a rotary device with high anticorrosive properties for pressure control in the well head, which is intended for the control of explosions in boreholes, consisting of a mechanism of quick coupling, support of high pressures, as well as as of replaceable and long-lasting sealing elements.

BACKGROUND The present invention is composed of various parts that are known as rotary heads of high pressure for perforation by balance, which generically in English are referred to as "Rotating Head Preventor". The main objective is to prevent pressure bursting (action that triggers the pressure of gases, liquids, solids, among others, during the drilling process or when it reaches the crude oil) preventing it from reaching the main drilling equipment. This type of inventions are used in the area of the oil industry specialized in drilling through balance.

Currently the closest state of the art relative to the rotary device with high anticorrosive properties for pressure control in the well head of the present invention, is disclosed in different patent documents, such as US4154448, US4157186, US4406333, US4825938, US5213158, US5647444, US5662181, US7040394, US7870896, WO1999018323, WO1999051852 and WO2003104609, which are far from having the arrangement and configuration of the present invention.

Although all these documents contemplate rotary pressure control heads, they do not have the components or the functional versatility of the present invention. On the other hand, the advantages of the device presented here will become apparent to a person with average knowledge in the area of the following description of a preferred embodiment thereof.

BRIEF DESCRIPTION OF THE FIGURES To facilitate the understanding and explanation of the present invention, various descriptive figures are attached to this specification, in which an example of a preferred embodiment of the rotary device with high anticorrosive properties for the control of the rotating device have been represented by way of illustrative and non-limiting example. pressures in the well head, according to the claims claimed.

Figure 1 shows a rear perspective view of the head. { housing) with its three different lateral outlets, its clamps, the hydraulic cylinder and the mechanical lock, which together make up the body of the device of the present invention.

Figure 2 shows an exploded view of the travel bell with the head (housing), the clamps, the hydraulic cylinder and the mechanical lock.

Figure 3 shows an exploded view of the test plug with the head (housing), the clamps, the hydraulic cylinder and the mechanical lock.

Figure 4 shows a side perspective view of the test plug with the head (housing), joined with clamps, hydraulic cylinder and mechanical lock.

Figure 5 shows an exploded view of the bearing with its polyurethane sealing element with the head (housing), the clamps, the hydraulic cylinder and the mechanical lock.

Figure 6 shows a lateral external view of the bearing with a polyurethane sealing element that is inserted in the head (housing) forming a part of the assembly of the device of the present invention.

Figure 7 shows a side cut view of the bearing with a polyurethane sealing element that is inserted into the head (housing) forming a part of the assembly of the device of the present invention.

Figure 8 shows an exploded view of the various internal components that make up the bearing that belong to the device assembly of the present invention. Figure 9 shows an exploded view of the internal components that make up the guide bell.

Figure 10 shows a lateral external view of the guide hood body coupled to the bearing and introduced to the head, which form part of the device of the present invention. Figure 11 shows a view of "lateral cut of the guide bell body coupled to the bearing and introduced to the head forming a part of the assembly of the device of the present invention.

Figure 12 shows a table with measurements of temperature and pressure of test 1. Figure 13 shows a table with temperature and pressure measurements of test 2. Figure 14 shows a table with temperature and pressure measurements of the test 3.

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary device with high anticorrosive properties for pressure control in the well head, which is intended for the control of explosions in boreholes, consisting of a mechanism of quick coupling, support of high pressures, as well as as of replaceable and long-lasting sealing elements.

Considering that drilling through a balance sheet is a relatively new technology, due to the fact that it is approximately ten years old, some improvement points were studied in the different processes and machinery that together make this type of drilling. In order to have its own brand and customized machinery for the works, points of improvement were developed, and based on field experiences, it was decided to gather all these points in a single product, and thus, eliminate components in a drilling platform . Based on the research and new technologies existing against the technologies that were available in that market niche, certain specific points could be found for the improvement and adaptation of this type of products.

It was analyzed that one of the main objectives of the present invention is to act as safety equipment in high pressures, working with a mechanism constituted with bearings, which in turn, contain seals and withstand pressures from 1000 to 3000 psi, when it is found working rotating at a constant speed of 280 rpm, and up to 5000 psi working statically adapting to the needs of the field, innovating and improving the performance of the rotating heads existing in the market.

During the stage of the tests of the physical performance of the present invention, especially in the area of the seals, various problems caused by the increase in pressure were found, in addition to the heating of the pieces due to the friction of the same, which caused the seals were melted, so the device did not comply with the internal operation. After several tests the optimum seals for the internal operation of the rotating device were determined, giving excellent results from the first test (figures 12, 13 and 14).

Based on these tests, the ability of the rotating device to work with high pressures, and with resistance to temperature, was determined both by the seals and by the components of the device.

The tests were worked with pressures of 1000 to 3000 psi rotating; pressures from 1000 to 5000 psi static; and with temperatures from 0 to 300 ° C.

Several considerations must be taken since the present invention is a component that works under balance, that is to say, that it is necessary to have a difference of pressure, as much in the interior part as in the exterior part, it is established that the seals must have as minimum a pressure of +100 psi greater than the outer part of the entire component. In this sense, as for the oil to be used, it must comply with some characteristics such as providing superior protection against oxidation and wear, low friction, excellent softness and filterability, easy release of air and excellent anti-foam, good demulsibility, and excellent thermal and hydrolytic stability. Among the oils used with better results, and the one recommended for use in the equipment, is the oil grade ISO 68.

The maximum revolutions that the assembly can withstand, should not exceed 280 rpm at 300 rpm, since the components have large diameters, which would cause the tangential speed to rise, as well as the probability that the components will suffer some damage or fracture.

When assembling, the seals should be lubricated with grease for high pressures and temperature, since this type of grease has properties that while working keeps the parts lubricated without losing their viscosity. For the present invention, SKF brand grease called GRA-EP2-60 based on petroleum hydrocarbons was used.

Likewise, as another main objective of the present invention, a shirt (sleeve) made of material 4140 was manufactured that functions as a wear accessory, which receives all the friction effort, preventing wear or deformation from suffering directly the mandrel. { mandrel), making its repair more economical, since, it would only be necessary to replace the shirt. { sleeve) without having to make a major repair to the mandrel. { mandrel), which usually consists of applying a layer of tungsten carbide, which entails an excessive cost.

The pieces of the present invention were designed to comply with standards required by the API. { American Petroleum Institute), such as API 6A and ISO 10423, for drilling equipment. The API 6A and ISO 10423 specification is the recognized standard in the industry that applies to the detailed requirements for the manufacture of equipment for the suspension of tubulars, valves and connectors used in oil and gas wells, which contain and control the pressure and the flow of the fluid.

GENERAL DESCRIPTION OF OPERATION The rotary device with high anticorrosive properties for pressure control in the well head will be installed when there is a need, either with a previous study or by operational needs.

The necessary adjustments must be made to install the device on the set of preventers either directly on them or using a spacer reel and then install the appropriate pipe that goes to the sludge separator and pressure sensor.

The device is involved in the three main processes according to the following methodology: a) Installation of the Device. Assemble the spacer spool or adapter required above the annular or spherical preventer, then lift the body of the head (housing) (100) (see figure 2) and assemble it with the preventers, then assemble the travel bell (300) with the head . { housing) (100) using the necessary safety methods to ensure that the body and the necessary accessories and tools are not damaged. See figure 2. to. l) Once the travel hood (300) is assembled on the head (housing) (100), proceed to close the clamps (201 and 202) with the hydraulic piston (200) and secure it with the threaded bolt or mechanical lock (204 ) a.2) After making all the necessary assemblies and safety measures, incorporate tools, cables, and pipes required when necessary during the entire drilling process into the well. a.3) Finishing incorporating the necessary tools, open the threaded pin (204), release the pressure of the piston (200), open the clamps (201 and 202) and remove travel bell (300) from the head (housing) b) Hermeticity tests. Assemble test plug (400) with the head (housing) (100). See figures 3 and 4. b. l) When reaching the designed drilling depth, disconnect the drill pipe and proceed to install the test plug. b.2) Once assembled the test plug (400) on the head (housing) (100), proceed to close the clamps (201 and 202) with the hydraulic piston (200) and secure it with the threaded pin (204) b.3) By having the well sealed, inject water pressure, as a means of checking that the entire system is sealed and without pressure leaks. b.4) At the end of the previous test, open the release valves and proceed to open the threaded bolt (204), release the piston pressure (200), open the clamps (201 and 202) and remove the test plug ( 400). c) Well drilling. Assemble guide bell, with bearing (bearing),, with the head (housing). See figure 10 (assembly coupling of figure 5 with assembly of figure 9). c. l) Lubricate the sealing elements (600 and 800) of polyurethane of the bearing (bearing) and the guide bell to achieve introducing the pipe without complications c.2) Install the bearing inside the head (housing) (100), and proceed to make the connection of the pipe to continue drilling. The pipe must have passed and be exposed completely below the polyurethane sealing element (600), if it does not pass, a push system must be used to pass through the element. c.3) When the drilling equipment is off-center, with respect to the rotating device (figure 10) and the preventers, place the guide bell (700), as a means to guide the pipe through the center of the body of the rotating device (figure 10) and prevent the pipe from being in contact with the walls, the guide hood (700) having inside it a second polyurethane element (800), as a means of sealing its inner diameter with the drill pipe, acting as a second security means when working.

The rotating device of the present invention in its preferred embodiment for well drilling comprises: a) A body or head (housing) manufactured with high anticorrosive quality due to the composition and alloy of the materials and that on at least two of its sides has pipe anchoring flanges, as means of deflection of flow of sediments to 90 ° with respect to the perforation line, where said device (100) can house accessories and is a point of detour for the residues that occur in the perforation; and wherein said body has in its upper part a pair of support protrusions (101) where it is placed b) A closure means constituted by two clamps iclamps (201 and 202) in the form of a half moon, joined together by means rotatable on one of its ends and presenting at the opposite ends a hydraulic cylinder (equal or equivalent to a hydraulic piston Parker Model HC5.00-4MP1TN8.00), attached to them by rotatable means, where said rotatable means are preferably anchoring forks (203) with a bolt (205) in its interior with a free pivoting, where said closing means joins and seals the head (housing) with c) A component that is connected to perform certain functions according to the need of the operation, whether to pass tools, perform leak tests or drill where the component is preferably selected from accessories such as a travel bell (300), a stopper test (400) and one bearing (500).

Particularly, the clamps are joined at their ends by means of forks through which a metal pin is passed, which function as a pivot for movement between the clamps and the hydraulic cylinder, which allows its easy anchorage directly to the part. top of the head (housing), preventing it from moving from its position. As a complement, opposite the rotatable means, it has a threaded bolt of security (204) that consists of two nuts, a threaded pin of 1 3/8"- 8UNC and 9" long.

The completely reinforced bearing (500), including the sealing element (600) preferably made of polyurethane, by its nature, allows to open and close its shape to seal against the drill pipe. All this set works as a pivot that allows the rotation of the pipe in the hole and makes the deflection of the sediments to come out at a 90 ° angle by the side flange of 7-1 / 16"coupled with the high pressure caused by gas bubbles, and water chambers diverting them towards the gas-mud separator.

The bearing (500) is an assembly of stamps and pieces that in its preferred modality includes: 501a. Superior Nut (Mandrel Lift Cap) Made of 4140 steel and used to protect the thread of the mandrel (Mandret) 501. Socket screw This is a hexagonal inlet hardened screw, preferably a socket screw 3/4"- 10 U C 2" long, which serves as a fastening means to anchor the top cover of the bearing. { bearing sealing), which has the advantage of being a commercial accessory. 502. Upper lid of the bearing (bearing sealing).

This top cover is elaborated with the form and specifications for the perforation of wells, which works as a centering part for the bearing and the mandrel, whose improvement is that it has a cavity for the housing of needle bearing, and lubrication veins (502a ) for the recirculation of the oil. 503 and 504. Washer (O-ring) This is a seal made of Vitón ® fluoroelastomer material obtained from the derivation of synthetic rubber and the elastomer fluoropolymer, which completely seals the inside of the assembly, allowing hermeticity inside, avoiding lubricant leaks, and which, like the screws, is a commercial accessory. 505. Rotary technology seals.

These rotary technology seals allow lubrication in the friction parts (mandrel-seal), avoiding the entry of any material, retaining the positive pressure inside the bearing, thanks to which they create an oil film between the friction parts, increasing the period of life of the components in contact, in this way both parts are protected and operation is improved. 506. Spiral retaining ring.

It is a spiral lock for internal parts, preferably Smalley brand WHT-1050, which prevents the parts from moving outside the place where they were placed. It is a commercial accessory. 507. needle roller bearing (edie roller bearing) MCA Irma, part # NA 4844-52 OF AC.52 It is a piece of rolling that allows to center the mandrel, avoiding that some sudden movement, directly damage other parts of the assembly. It is a commercial accessory. 508. Needle bearing track (inner race) Brand Inna # of part RNA 4844-52 OF AC.52 It is a piece that allows the displacement of the bearing bolts. It is a commercial accessory. 509. Cover or shirt (sleeve).

It is a piece made with 4140 steel, which prevents more important and expensive parts of the bearing assembly from being worn directly. Using other parts that are in the market, the bearing wears the arrow or mandrel, causing a corrective maintenance of several parts of the assembly. 510. Spiral retaining ring.

It is a spiral lock for internal parts, preferably Smalley brand WST-825, which prevents the parts from moving outside the place where they were placed. It is a commercial accessory. 511. Tapered roller bearing.

These tapered bearings are preferably of the brand Timken # part LM 742710 and LM 722749, which receive and withstand both axial and tangential forces, preventing it from rotating the assembly due to these forces. It is a commercial accessory. 512. Mandrill (mandrel).

The Mandrel, made of hollow bar material 4140 T is the center of mass or rotational part of the bearing (bearing), being the fundamental part of the assembly to house most of the rotating components (bearings), being the part that rotates at the moment if the rotating device is in operation. To improve and increase your! Surface hardness and life period should be applied a heat treatment with the name of Ion-Nitrided with the following specifications.

Previously, a strain relief is applied to avoid deformation of the material by heating or vibration, subsequently applying the Nitrided Ion of 64 - 70 Re of surface hardness to a depth of 0.015".Likewise, a layer of hard chrome is applied to improve the finish of the piece, and easily slide the rotary technology seals. 513. Tapered bearings { tapered roller bearing).

These tapered bearings are preferably of the brand Timken # part LM 742710 and LM 722749, which receive and withstand both axial and tangential forces, preventing it from rotating the assembly due to these forces. It is a commercial accessory. 514. Assembly body of cast iron bearing 4130 This piece is important in the assembly, since it is what houses all the components, mainly the cups (LM 742710) which are the tracks of the bearings conical, which are installed previously, likewise, is the part where the mandrel! rotate, and the cartridges (cover and Ring with flange) are placed, which in turn house the stamps rotary technology, being this part, (bearing body of the bearing, Bearing) the part of larger size in the sub-assembly. 515. Rotary technology seals.

These seals of rotary technology, allow a lubrication in the parts of I friction (mandrel-seal), avoiding the entry of any material, retaining the pressure positive in the bearing, because they create an oil film between the parts of friction, increasing the period of life of the components in contact, in this way protect both sides and improve the operation 516. Lower cover of the bearing (ring with flange) made of steel 4140 T.

This piece is a component that serves for the coupling of the seals of rotary technology, which is attached to the bottom with screws (3/8"-16UNC), which It allows to replace the seals in less time, without the need to disassemble other components of the invention, as with other commercial devices. 517. Socket screw This is a hexagonal inlet hardened screw, preferably a screw: socket 3/8"- 16 UNC 1.25" long, which serves as a means of securing the lid lower (ring with flange), which has the advantage of being a commercial accessory. 518. Washer (O-ring). i This is a seal made of Vitón ® fluoroelastomer material obtained from the derivation of synthetic rubber and elastomer fluoropolymer, which completely seals the interior of the assembly, allowing hermeticity in the interior, avoiding leaks in the oil supply lines, and which is easily replaceable since it is a commercial accessory. 519. Drain plug.

It is a steel plug, preferably l / 8"-27 UNC NPT, whose function is to cover drainage holes, allowing it to be dismantled when the oil drain is required.It is a commercial accessory. 520. Lower Thread Protector (Element Adapter Ring) Made of 4140 steel, it serves to protect the lower thread of the mandrel (Mandrel) and realizes the coupling of the polyurethane seal element.

Arming recommendations.

The assembly of the rotary device with high anticorrosive properties for the control of pressures in the well head, can be carried out by any technical technician in the maintenance and assembly area, using conventional tools, according to the following sequence: a) Armed cover (502) a.1. Apply a small film of grease around the cavities. a.2. Apply an oil coat (WD-40) to the walls where the RNA 4844 52DE, AC, 52 (507) or MCA G bearings will be placed ??? RNA 4844-52 OF AC.52. a.3. Place spacer. ring taking care of the orientation of the guide perforation. a.4. Place the bearing (RNA 4844 52DE, AC, 52 (507) Mark INNA RNA 4844-52 OF AC.52) in its respective cavity and take it to the press type H to apply a uniform force and between parallel with the cavity . to 5. Insert Spiral retaining ring type infernal housing diameter 010.500"Brand Smalley, WHT1050. (506) a.6. Place the two rotary technology seals with the legend "lubricant side" to the side where the oil is located. (505) a.7. Place the Viton o'rings part (AS568-381 and AS568-382 respectively) (503 and 504) in their corresponding diameters. b) Armed for the Bearing housing seal ring. b.1. Take the part in question and place it on the desk. b.2. Place the two rotary technology seals (515) in their respective cavities, taking care of the position of the "lubricant side" legend, which must be pointing to the side where the oil is located. b.3. Place the two o rings of Viton (503 and 504) in their respective grooves that are in the outer diameter of this part. c. Handling of the Mandrel Piece (512). c.1 Take Mandrill piece (512) and place on work table. c.2 Totally eliminate the residues that may exist in the piece and if necessary use solvent thinner) for its complete cleaning. c.3 Apply a small layer of oil (WD-40) around the diameters. c.4 Take the bearings Timken Mark, LM742749 and race LM74271Q (511 and 513) and place them one by one in their respective diameters using the press Hydraulic type H. When placing the bearings, apply a layer of bearing grease resistant to pressure and temperature). This type of bearing Tapered roller bearing # part LM742749 consists of 2 parts ie the bearing and its respective rate, which is assembled separately. c.5 Place the cover. { Rotating sleeve retainer) (509) in its respective diameter using the type H press. c.6 Assemble the needle roller bearing (Needle roller bearings inner rings MCA SKF IR220X240X50 or INNA RNA 4844-52 OF AC.52) (508) Inner race, on the rotating sleeve retainer using the hydraulic press type H. c.7 Place spiral retaining ring, type external, shaft diameter 8.250"Brand Smalley, WST-825 (506) d. Armed assembly body of the bearing. d.l Place the assembly body (514) on the work table if necessary, use a hoist d.2 Clean the inner part of it and, if necessary, use some type of solvent for its complete cleaning. d.3 Apply a layer of oil (WD-40) on the inside diameters. d.4 Take the bearing cup (Tapered roller bearing, Timken Mark, LM742749 and race LM742710) (51 1 and 513) and place it in the corresponding inner diameter. Using the rubber mallet, the diameter is guided taking care not to damage the bearing track, finishing introducing the track with the help of type H press. d.5 With a little fat, place the o ring of Viton AS568-204 in its corresponding slot. d.6 In the same way the o rings of Viton O-ring, AS568-456 and O-ring, AS568-457 (503 and 504) are placed in their corresponding diameters. and. Assembly of complements.

Take the mandrel sub assembly (512) and with its correct position (thicker thread at the bottom) is assembled inside the assembly body (5 Í4) making sure the bearing (Tapered roller bearing # part LM742749) (513) ) make perfect contact with your previously assembled track. e.2 Place the bearing rate (Tapered roller bearing # part LM742749) (511) on the bearing that is uncovered. e.3 Once the Mandrel (512) and the respective cups of the bearings are placed (Tapered roller bearing, Timken brand, LM742749 and race) LM742710 (511) in the body of the bearing, proceed with the placement of the sub assembly cover (502) making sure that the rings of Viton AS568-381 and AS568-382) (503 and 504) are in their respective place and respectively well lubricated with bearing grease of high resistance to temperature and high pressure, likewise ensure the indicated position of the cover, since the hydraulic communication drill must match the drill to which we put the o ring of Viton AS568-204 (518). e.4 When installing the cover (502), a stainless steel strip of 0.005"thickness should be placed, covering in some way the thread of the mandrel (502), to avoid damaging the rotary technology seals (505). On the mandrel (512) and on the body of the bearing (514) should be seen a light between faces of 1/8"maximum, otherwise one of the o 'rings of Viton is not in its corresponding position and we will have to disassemble the cover piece (502) to place these washers (or 'rings) correctly. e.5 Place the screws (socket head ¾ -10 hpp X 2-1 / 2") (501) long in their respective place and tighten them. e.6 Using the 5/8 eye bolts and the hoist, hoist the armed components to a height that allows us to make the rotation maneuver @ 180 °. NOTE: to protect the thread of 8,250"4 TPI a nut is placed . {Mandrel lifi cap) (501a). e.7 Place the lower cover of the bearing (516) in its position and assemble using the screws. { head socket 3 / 8-16 hpp X 1") (517) long by screwing and tightening these. e.8 Place the lower thread protector. { Element adapter ring) (520) e.9 Once the protector is placed. { Element adapter ring), place the Viton o'rings (AS568-270) in their outside slots.

F. Head management { housing) (100) f.l To start with the assembly of the head. { housing) (100) it is necessary to clean the cavity where the bolt enters, which must enter smoothly without the need for knocks. f.2 The Clamp Clamps A and B (202 and 201) are identified respectively, and the position of each of them before assembling on the head is defined. { housing) (100) f.3 With the help of the hoist or the tool for installation, place the "Clamp Half A and clamp Half W (201 and 202), positioning them visually in the correct place in the cavity where the bolt will be positioned. f.4 Once the clamps A and B (201 and 202) have been positioned, the spacers begin to be placed covering the gaps in the pivoting of each clamp. f.5 Place the pivot pin taking care that all the spacers enter it. f.6 Place the ½ - 13 HPP screw with its respective washer. f.7 Finally, using the padlock clamps, place the padlock in the slot in the bolt. f.8 Later it is assembled in the clamps making use of the hoist and / or the lifting tool. f.9 Finally, the bolts are placed on each end, placing the respective spacers in each one. f.10 Using the padlock clips, locks are placed on the ends of each bolt. f.l 1 Using the hydraulic pump, air is injected into the inlet and outlet of the piston to check its operation leaving the piston completely open. g. Armed with the sub-assemblies. g.1 Having the subassemblies finished, with the help of the hoist, the previously assembled bearing (500) with its internal components is lifted. And it is carefully placed inside the head (housing) taking care that the o'rings are in their correct position. g.2 Injecting air to the piston (Hydraulic cylinder), (part # 5.00BBHLT14AX8.000 (200) cap fixed clevis, (203) Parker brand) closes doing this the clamping, of the pair of clamps (201 and 202) with the bearing (500).

Under the bearing (bearing) is placed a sealing element (stripper rubber) (600) primary, preferably of polyurethane rubber with supports on the outside and conical termination at one end, which make the seal against the pipeline. drilling, preventing pressure leaks and eliminating the use of "fingers" (metal skeleton) or kevlar mesh. The sealing element. { stripper rubber) primary is responsible for making seal with the drill pipe, and prevents any leakage of pressure to escape to the outside, providing greater security to the drilling. Few manufacturers incorporate an accessory such as this into their equipment.

In the upper part of the bearing a guide bell body (700) can be used, which is a metallic tube whose lower part (701) is adjustable to the bearing cover '(502), which has a guide hood cover ( 900), which is a piece that in its lower part (901) has a packing (902) and which holds a polyurethane sealing element. { stripper rubber) secondary, which is a tube with conical termination (801) in one! from its extremes. In such a way, that the guide bell body serves as a mandrel to house the sealing element, which allows to have an assembly of the sealing element, easy and fast, in a manner very similar to the primary assembly.

The rotary device of the present invention by its configuration and components has multiple advantages with respect to those of the state of the art, among which stand out: - The high anticorrosive properties of the material type due to its alloy in 4130 steel, which allows greater resistance to wear and other factors such as the resistance to solvents, oils and gases that may appear in the perforation.

- Possess side flanges attached to the body, unlike others in which they are on a projection of the piece.

- The assembly is up to six times faster than any other head of similar application. All components of the rotating device can be assembled in a 3 hours time, considering having the right tools. Similar rotary heads are assembled regularly in a time of about 20 hours, that is, the assembly time of the rotating device of the present invention, up to 6 times less than in commercial heads.

- The parts and consumables are made of a more resistant material, in this sense the main consumables, that is, the seals, have a period of life in optimal conditions of 5,000 hours, based on laboratory tests working in an ideal scenario. The current heads have a duration of 80 hours in certain consumables.

- Inside the assembly, there is a piece called cover or shirt (sleevé) that works like a fuse, that is to say, a shirt that receives all the wear, avoiding with this costly repairs.

- The travel bell, has a larger internal diameter, facilitating the entry of tools.

-The rotating device has an accessory called a guide bell, which guides the pipeline when the well is out of phase with the drilling rig.

This guide hood comprises of 5 parts being described below: Guide hood body: It is the element that anchors with the upper part of the bearing, and that realizes the main support of the sub assembly.

Guide hood cover: This cover, makes the seal on the top and which is anchored to the body of the guide bell.

Needle bearing: this bearing allows rotation between the body and the rubber element (stripper rubber) (800).

Rotary technology seal: allows the proper tightness between the rotating components.

Stripper rubber (second element): it is polyurethane rubber (800).

- The hydraulic piston used in the rotating device, is of greater strength and with an arrangement that optimizes the closure, avoiding 2 or 3 smaller pistons as they are placed on similar heads in addition to a mechanical lock, which is composed of a threaded bolt that It does not depend on power units and provides greater security when working. Likewise, in comparison with other similar products, the clamps provide a greater area of anchorage, since its inner part imprisons most of the outer brow of the head and accessories, providing greater security when keeping the piston closed annexing Therefore, unlike other rotary pressure control heads on the market, the rotary device of the present invention has shown greater efficiency in different areas of operation or operation, even that rotary heads of commercial pressure control, with plastic means of sealing, because it turns out to be easily assemblable and repairable, besides being able to be coupled and fastened until adapting to different sizes of pipes, maintaining the control of pressure, still under sudden movements or point elevations of pressure, avoiding breaks during the months of useful life of the rotating device. Likewise, due to its buildable and manageable character, it allows a secure fit even under extreme installation conditions.

It is to be understood that the description and the figures presented are by way of example, being non-restrictive with respect to the invention and therefore not limited to the illustrated but to the scope of the corresponding claims.

Claims (6)

CLAIMS Having described my invention enough, I consider as a novelty and therefore claim as my exclusive property, what is contained in the following clauses:

1. A rotary device with high anticorrosive properties for pressure control in the wellhead, applicable to preparation processes, pressure tests and well drilling characterized because it comprises: a) A body (housing) manufactured with high anticorrosive quality that on at least two of its sides has pipe anchoring flanges, as means of deflection of sediment flow at 90 ° with respect to the perforation line, where said device ( 100) can house accessories and where said device presents in its upper part a pair of support protrusions (101) where it is placed b) A closing means consted by two clamps (201 and 202) in the form of a half-moon, joined together by a means rotatable on one of their ends and having at opposite ends a hydraulic cylinder (200) attached to them by means rptables, wherein said rotatable means are preferably anchoring forks (203) with a bolt (205) therein with a free pivoting, where said closing means joins and seals; head with c) A connection device for joining pipe to the head, where the device is preferably selected from travel bell (300), test plug (400) and bearing (500).

2. A rotary device with high anticorrosive properties for pressure control applicable to preparation, pressure testing and well drilling processes according to claim 1, characterized in that optionally a primary polyurethane (600) sealing element is placed under the bearing (500) , preferably of polyurethane rubber with supports on the outside and with a conical termination at one end

3. A rotary device with high anticorrosive properties for pressure control applicable to preparation processes, pressure tests and well drilling according to claim 1, characterized in that a guide bell body (700) can be used in the upper part of the bearing. which is a metal tube whose lower part (701) is adjustable to the cover of the bearing (502), which has a cover of the guide bell (900), which is a piece that in its lower part (901) has a package ( 902) and that it holds a secondary polyurethane sealing element (800), which is a tube with conical termination (801) at one of its ends.

4. A rotary device with high anticorrosive properties for pressure control applicable to preparation processes, pressure tests and well drilling according to claim 1 characterized in that the clamps at the end opposite the rotatable means, has a mechanical lock (204) preferably selected from a threaded bolt with nuts at its ends.

5. A method applicable to the processes of preparation, pressure testing and drilling of oil wells using a rotating head according to claim 1, characterized in that it comprises the following steps: a) Assemble travel bell (300) with the head (housing) (100), 26 b) Insert inside the head the required accessories inside the well during the drilling process, c) Remove travel bell from the rotating head (300), and proceed to start a drilling at a shallow depth. d) Assemble the test plug (400) with the head (housing) (100), e) Disconnect the drill pipe and install the test plug, when reaching the depth of drilling, f) Inject water pressure, having the well sealed, and verify that the system is sealed and without pressure leaks. g) Open the release valves and proceed to remove the test cap, upon successful completion of the previous step, h) Assemble guide bell, with bearing (500), with the head (housing) (100), i) Install the bearing inside the rotary head, and proceed to make the connection of the pipe to continue drilling.

6. A method applicable to the processes of preparation, pressure testing and drilling of oil wells using a rotary head according to claim 4, characterized in that after the passage of point i) if the drill is out of phase with respect to the rotating head , we proceed to the next step: j j) Place a means to guide the pipe through the center of the housing (100), where said guide means is preferably a guide hood (700), which has a second polyurethane rubber (800) inside it , through which the drill pipe passes.