16 results about "Drilling riser" patented technology

The marine drilling riser fixing auxiliary equipment comprises a lifting assembly, the lifting assembly comprises a lifting base, a first through hole is formed in the lifting base, four steel cables and a riser are arranged in the first through hole in a penetrating mode, and a guide mechanism, a power mechanism and a brake mechanism are arranged on the lifting base; the rotating assembly comprises a rotating base, the rotating base is rotationally connected to the lifting base, a regulation and control mechanism is arranged between the rotating base and the lifting base, and a second through hole is formed in the rotating base; the fixing auxiliary assembly comprises a shell, the shell is fixedly connected to the rotating base, two third through holes are formed in the shell, a first thrust mechanism is arranged in the shell, and an automatic steering mechanism and a second thrust mechanism are arranged outside the shell. According to the device, the marine riser can be pushed, bending of the marine riser is reduced, the position of the marine riser in water can be conveniently adjusted according to the bending portion of the marine riser, meanwhile, the operation direction can be adjusted, and therefore the service life of the marine riser is guaranteed.

The utility model belongs to the technical field of riser pipes, and particularly relates to a drilling riser pipe with a double-clamp-spring type connecting structure, which comprises a riser pipe, connector structures are mounted at the ends, close to each other, of the two riser pipes, sealing structures are mounted in the connector structures, locking structures are mounted in the middles of the outer surfaces of the connector structures, and the locking structures are connected with the connector structures. The connector structure comprises a connector unit and a sealing unit, the sealing unit is arranged in the connector unit, the connector unit comprises a female connector, the right end in the female connector is connected with a male connector, and a connector is installed at the end, close to the female connector, in the male connector. According to the drilling riser of the double-clamp-spring type connecting structure, through the arrangement of the connector structure, when the female connector is connected with the male connector, the female connector and the male connector are connected in a reinforced mode through a flange and a fixing bolt, and meanwhile the sealing performance after connection is guaranteed through installation of a sealing ring.

The present application relates to a kind of floating production platform drilling and completion operation method and system with rig module, it includes: in the platform original point and goes into drilling riser and production riser;After the platform displacement is realized by anchor chain, drilling riser, production riser and underwater wellhead are connected again, to reduce the interference risk of going into process.The present application can greatly reduce drilling and completion and workover cost, underwater Christmas tree cost, effectively revitalizes marginal oil and gas field development.The present application can be widely applied in offshore oil and gas field development field.

The utility model belongs to the technical field of marine drilling riser detection, and particularly relates to a traction device for marine drilling riser detection, which comprises a workbench, a main support platform and an auxiliary support platform, and the main support platform and the auxiliary support platform are arranged above the workbench and are connected through a traction structure. A clamping mechanism is arranged on the main supporting platform; the clamping mechanism comprises a left clamping unit and a right clamping unit; the left clamping unit comprises sliding grooves, an air cylinder and a clamping plate, the two sliding grooves are formed in one side of the main supporting platform, the air cylinder is arranged in the sliding grooves, and the output end of the air cylinder is connected with a sliding block. According to the traction device for detecting the marine drilling riser, the traction structure adopts a mode that the motor drives the threaded rod to rotate, the auxiliary supporting platform is driven to do accurate linear motion relative to the main supporting platform, accurate traction and positioning of the riser are achieved, and the accuracy and efficiency of detection or transportation are improved.

The invention belongs to the technical field of riser system risk assessment, and discloses a drilling riser system failure assessment method and related device.The drilling riser system failure assessment method comprises the steps that uncertain factor sources of a riser system are obtained; data sampling is carried out on uncertain factor sources of the riser system, and a preset dynamic response index calculation value of the riser system under the storm condition is obtained through analysis; the failure state is judged, and an uncertainty factor source which has the most obvious influence on the vulnerability of the riser system under the extreme storm condition is obtained through analysis; carrying out data sampling on an uncertain factor source which has the most obvious influence on the vulnerability of the marine riser system under the extreme storm condition, and analyzing to obtain a preset dynamic response index calculation value of the marine riser system under the extreme storm condition; the failure state is judged, and uncertain factor indexes which have the most remarkable influence on the vulnerability of the riser system are obtained through analysis; the method breaks through the limitation that a traditional failure assessment method only pays attention to environmental loads, and ensures the accuracy of a failure assessment result.

A rotation control device for pressure controlled drilling, the rotation control device comprising:-a housing comprising a central circular portion having an opening extending therethrough, where the housing comprises a recess located near a top edge thereof; the groove defines an upper edge, a lower edge and a side wall located between the upper edge and the lower edge; -a sealing assembly adapted to be securely and detachably inserted within the opening of the housing and defining a bore sized for insertion of a drill string therethrough wherein the sealing assembly is configured to seal around the drill string and isolate an annulus of the drilling riser; -a boltless seal assembly securing system comprising: o at least one boltless sector adapted to be inserted into a groove located on the housing, each of the at least one boltless sector comprising a shape adapted to fit within the groove and having an outer surface, an inner surface, a top surface and a bottom surface; the outer surface is suitable for abutting against the side wall of the groove, the lower surface is suitable for abutting against the lower edge of the groove, and the top surface is suitable for abutting against the upper edge of the groove; o a boltless segment holder comprising a top surface adapted to be fixed on the top edge of the housing and a lower edge adapted to be inserted into the housing opening and abut against an inner surface of the at least one boltless segment; wherein the at least one boltless segment is inserted into the groove and then the boltless segment holder is secured to the at least one boltless segment, sufficient to secure the seal assembly within the housing.

The invention discloses a method for predicting dynamic characteristics of a drilling riser in an ultra-deep water free standing mode, which comprises the following steps of: establishing a two-dimensional coordinate system by taking a submarine blowout preventer as an original point, and establishing a fluid infinitesimal and riser infinitesimal mechanical equilibrium equation according to the Alembert principle; in consideration of environmental loads generated by waves, ocean currents and wind and buoyancy generated by a buoyancy barrel on the top of the riser, a classical bent beam theory is adopted to deduce a transverse differential equation of the riser in the ultra-deep water free standing mode, boundary conditions of a dynamic behavior prediction model of the riser in the ultra-deep water free standing mode are determined, and a finite element method is adopted to predict the dynamic behavior of the riser in the ultra-deep water free standing mode. An equation is solved by combining a Newmark-beta integral method, a dynamic behavior prediction model of the marine riser in the ultra-deep water free standing mode is finally established, and the dynamic characteristic behavior of the marine riser in the mode can be clearly predicted.

The present invention provides a pressure control drilling system and a drilling method for deepwater drilling in deep sea areas. The system includes a riser rotation control sub, an MPD hydraulic control sub, a riser annulus sealing device, a riser four-way joint, etc., which are integrated on an independent drilling riser joint. It forms a system with its corresponding key surface equipment: MPD choke manifolds, MPD hydraulic control manifolds, MPD buffer manifolds, MPD filter manifolds, MPD mud-gas separators, etc., and is used in conjunction with equipment such as riser boost pumps, metering tank pumps, rotary tables, mud diverters, riser telescopic joints, riser tension rings, drilling risers, subsea blowout preventer stacks, subsea wellheads, etc. of conventional deepwater drilling equipment. The present invention can be applied to carry out pressure control drilling and related drilling operations on equipment such as semi-submersible drilling platforms and drill ships in deep water (water depth above 300m).

The invention discloses an aluminum-based composite material for a deep sea drilling riser as well as a preparation method and application of the aluminum-based composite material. The preparation method comprises the following steps: S1, uniformly mixing aluminum alloy powder and AlCoCrFeNi high-entropy alloy powder through a tank mill; s2, the mixed powder is subjected to ball milling; s3, the ball-milled powder is dried and then put into a graphite mold to be subjected to cold pressing treatment, then vacuum sintering is conducted, and the sintering heating process comprises the steps that the temperature is increased to 250 DEG C within 150 minutes, and heat preservation is conducted for 1 hour; then the temperature is increased to 350 DEG C within 90 minutes, and heat preservation is conducted for 1 hour; raising the temperature to 450 DEG C within 90 minutes, and keeping the temperature for 1 hour; finally, the temperature is increased to 550-650 DEG C within 90 minutes, heat preservation is carried out for half an hour, cooling is carried out, and an aluminum-based composite material initial product is obtained; and S4, the aluminum-based composite material initial product is heated to 450 + / -10 DEG C for multi-pass rolling, the total deformation is controlled to be 20-80%, and the aluminum-based composite material for the deep sea drilling riser is obtained. The aluminum-based composite material prepared through the method has excellent compressive strength and corrosion resistance, and the service requirements of deep sea drilling riser and other extreme environments are met.

The invention belongs to the technical field of marine drilling riser, and relates to a deepwater drilling riser fatigue life management method and system, and the method comprises the steps: obtaining the configuration information and structure parameter information of a riser through reading an electronic tag of the riser; according to the configuration information and the structure parameter information of the marine riser, wave-induced fatigue and vortex-induced fatigue analysis is carried out, so that the comprehensive fatigue damage and the service life of the marine riser are predicted; performing risk assessment according to wave-induced fatigue and vortex-induced fatigue analysis results; according to a risk assessment result, overhaul optimization is carried out, high-risk items are directly overhauled, for medium-low-risk items, the total process cost is calculated based on the defect type of the marine riser, a genetic algorithm optimization method is adopted, the minimum process use cost is used as a target function, self-adaptive optimization is carried out, and the most economical overhaul scheme of the marine riser is obtained. Individual identity information is given to the marine riser, information traceability in the whole life cycle is ensured, and automatic updating and efficient management of marine riser data are achieved.

This invention provides an experimental method for the parametric response of a coupled system of an offshore platform-riser-subsea wellhead, belonging to the technical field of riser systems. This method uses the configuration parameters of an actual offshore drilling riser system as a basis, and determines the parameters of the similarity ratio, model material, and structural dimensions based on similarity theory and truncation design theory. The various devices are fastened together using flanges and bolts. The heave amplitude and frequency of the six-degree-of-freedom excitation platform and the drilling fluid circulation device are adjusted to control the drilling fluid flow rate and pressure within the riser string. Multiple sets of metal strain gauges are attached to different positions on the riser string, and a three-part force meter is installed at the top and bottom of the riser system. By analyzing and processing the collected data, this method can solve the problem of unclear mechanisms affecting the parametric excitation vibration of the pressure-controlled drilling riser coupled system under complex loads.

The invention discloses a top hydraulic tensioning type drilling riser system suitable for a cylindrical floating deepwater dry platform, which comprises a production riser system, a tensioning system, a wellhead connecting system and an underwater isolation barrier system, the production riser system comprises a flow divider, a telescopic joint, an overwater blowout preventer, a platform moon pool structure and a single drilling riser, the single drilling riser is of a hollow tubular structure, the flow divider, the telescopic joint, the overwater blowout preventer, the tensioning system, the platform moon pool structure and the top of the single drilling riser are sequentially connected, and the bottom of the single drilling riser is connected with an underwater wellhead through the wellhead connecting system and the underwater isolation barrier system. Based on an overwater blowout preventer mode, a huge, overweight and high-cost underwater blowout preventer does not need to be used, then the deepwater drilling operation cost is reduced, and through combined use of the overwater blowout preventer and the underwater isolation barrier system, the drilling operation safety is effectively improved, and the operation risk is reduced.

A drill string system for a riser includes a first part of the riser configured to connect to a first section of the riser, a second part of the riser configured to connect to a second section of the riser, and a chamber closure connection. The chamber closure connection includes a first part configured to connect to the first part of the riser and comprising a first coupling element, and a second part configured to connect to the second part of the riser and comprising a second coupling element. The chamber closure connection is configured to adjust between a locked and an unlocked configuration.

The application belongs to the technical field of drilling riser and discloses a modularized drilling riser capable of being quickly spliced, which comprises a water pipe body, an upper flexible joint is arranged on the upper end of the water pipe body, and a lower flexible joint is arranged on the lower end of the water pipe body, a multi-section water pipe body structure is arranged, and a buoyancy section is detachably arranged between the adjacent two sections of the water pipe body, the first connecting ring of the water pipe body is butted with the second connecting ring of the buoyancy section, the toothed rubber ring between the first connecting ring and the second connecting ring is engaged, at the moment, the two half rings of the clamp are combined, the annular groove formed in the inner side of the clamp is wrapped outside the first connecting ring and the second connecting ring, the slope rubber ring in the annular groove is abutted with the first connecting ring and the second connecting ring, and the corrosion-resistant sealing ring maintains the sealing property of the connection between the single section of the water pipe body and the buoyancy section.

The application discloses a kind of drilling riser self-adaptive locking and sealing threaded joint, including outer threaded joint, inner threaded joint, outer threaded section, inner threaded section, second threaded section, inner threaded section stepped locking threaded section and outer threaded section stepped locking threaded section;Outer threaded joint and inner threaded joint are connected, the outer threaded joint is provided with outer threaded section, inner threaded joint is provided with inner threaded section, the outer threaded section of outer threaded joint and the inner threaded section of inner threaded joint are connected, second threaded section is arranged in the axial middle section of inner threaded section, and inner threaded section stepped locking threaded section is arranged on second threaded section, and outer threaded section stepped locking threaded section is correspondingly provided at the junction of outer threaded section and inner threaded section stepped locking threaded section.Processing is simple by the way that multiple stepped locking threaded structures are uniformly distributed along the circumference of pipe body, site assembly is easy to control, anti-reversal effect is immediate, and additional installation of anti-reversal pin block and non-metallic sealing ring and other structures is not needed.

The utility model discloses an ocean engineering drilling riser installation device, and relates to the technical field of riser installation. The device comprises a first supporting ring and a second supporting ring, symmetrically-distributed guide rails are fixedly installed on the outer side of the first supporting ring and the outer side of the second supporting ring, the outer sides of the guide rails are movably sleeved with movable plates, and a first supporting pipe is fixedly installed at one end of each movable plate; first fixing holes are formed in the four corners of the first supporting pipe correspondingly, two sets of symmetrically-distributed fixing rods are fixedly installed on the outer side of the first supporting ring and the outer side of the second supporting ring correspondingly, and the outer sides of the fixing rods are movably sleeved with moving plates. Through the arrangement of the first supporting pipe and the second supporting pipe, the connecting position and other parts of the vertical pipe can be supported, the stability of the vertical pipe is improved, pressure borne by the outside is reduced, and the service life of the vertical pipe is prolonged.