CN200949440Y - Fast assembled wellhead device - Google Patents
Fast assembled wellhead device Download PDFInfo
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- CN200949440Y CN200949440Y CN 200620077839 CN200620077839U CN200949440Y CN 200949440 Y CN200949440 Y CN 200949440Y CN 200620077839 CN200620077839 CN 200620077839 CN 200620077839 U CN200620077839 U CN 200620077839U CN 200949440 Y CN200949440 Y CN 200949440Y
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Abstract
The utility model discloses a fast installation wellhead equipment. The surface casing (3) is clamped on the slip hanger (5). The slip hanger (5) is installed at the bottom of the fast installation wellhead body. A Y shaped self-sealing device(7) seals the ring gap between the surface casing (3)and the wellhead body. The mandrel typed casing hanger(8) hangs the intermediate casing(2) and is located at the supporting steps of the fast installation wellhead body. The seal sleeve(10)is fixed on the fast installation wellhead body(6) to seal the ring gap between the fast installation wellhead body(6) and the mandrel typed casing hanger(8). The oil pipe hanger(12) is located at the upper end of the seal sleeve(10) to hang the oil pipe(1). The oil pipe hanger(12) is fixed on the fast installation wellhead body(6). The whole fast installation wellhead body of the utility model which has a compact structure, simplified operation procedure increases the efficiency of drilling, increases the sealing performance and reduces the cost of drilling.
Description
Technical field
The utility model relates to a kind of ready-package wellhead assembly, is used to hang surface pipe, protective casing and oil pipe, and Seal Oil, sleeve pipe annular space are the visual plants of oil, natural gas drilling.
Background technology
Present known wellhead assembly is split type wellhead assembly, is made up of casing head, tubing head two parts, with the gasket ring sealing, couples together by bolt, nut between the two.This kind wellhead assembly in drilling process according to drilling technology program and operating mode needs, must change different size the preventer device and on watch out for the spray apparatus operation, labor intensity is big, inefficiency, has increased drilling cost.
Summary of the invention
The purpose of this utility model is: a kind of ready-package wellhead assembly is provided, solves the deficiency of split type wellhead assembly, easy operation, alleviate drilling well labour intensity, reduce drilling cost, improve drilling efficiency.
The scheme of the utility model technical solution problem is: this ready-package wellhead assembly is mainly by oil pipe, protective casing, surface pipe, slips hanger, the fast-assembling wellhead body, Y type self-tightening sealing device, axle formula casing hanger, sealing shroud, boll-weevil hanger, spring collar is formed, casing head body and tubing head body are designed to whole fast-assembling wellhead body, surface pipe is clamped on the slips hanger by the engagement wedge shape of the closed flank of tooth of slips hanger, slips hanger is suspended on the bottom of fast-assembling wellhead body securely, the annular gap of Y type self-tightening sealing device sealing surface pipe and fast-assembling wellhead body; Protective casing is connected on the axle formula casing hanger by screw thread pair, axle formula casing hanger is seated in the carrying step place of fast-assembling wellhead body endoporus, sealing shroud is fixed on the fast-assembling wellhead body by spring collar, and the annular gap of fast-assembling wellhead body and axle formula casing hanger is sealed by sealing shroud; Boll-weevil hanger is seated in the upper end of sealing shroud, boll-weevil hanger hangs oil pipe by screw thread pair, boll-weevil hanger is fixed on the fast-assembling wellhead body by spring collar, the annular gap of boll-weevil hanger and fast-assembling wellhead body is by being contained in the rubber seal sealing on the boll-weevil hanger cylindrical, and upper flange endoporus and boll-weevil hanger body endoporus seal with metal o-ring.
In the utility model ready-package wellhead assembly, if protective casing is not because pit shaft vertically can not be lowered to the precalculated position, axle formula casing hanger can not be located the carrying step place of fast-assembling wellhead body, then hang protective casing by emergent slips hanger, the annular gap of emergent sealing shroud Sealing Technology sleeve pipe and fast-assembling wellhead body, emergent sealing shroud is fixed on the fast-assembling wellhead body by spring collar.
In the utility model ready-package wellhead assembly, the fast-assembling wellhead body is provided with interface, and flap type is installed on interface, is provided with standby outlet on the symmetric position of fast-assembling wellhead body, and gasket ring, flange, instrument etc. are installed in the standby outlet.
In the utility model ready-package wellhead assembly, slips hanger mainly is made up of bolt, slip insert, slips housing, and the bore area of slip insert is processed with the closed flank of tooth of barb-shaped, and the cooperation cross section of slip insert and slips housing is for the bipyramid face
Shape, the otch that cuts away on the circumference of slip insert behind the part material is " product " shape; By special tool the external diameter of slip insert is shunk its slips housing of packing into, by bolt slips hanger is connected with the fast-assembling wellhead body, surface pipe is penetrated the endoporus of slip insert, screw bolt clockwise, then the slips housing can move, make slip insert, the cooperation conical surface of slips housing moves mutually, force the surface of the engaging-in surperficial sleeve pipe of the closed flank of tooth of barb-shaped of slip insert bore area, be released into surface pipe this moment, under the self gravitation effect of surperficial sleeve pipe, surface pipe drive slip insert moves down along the cooperation conical surface of slips housing, make and cooperate conical surface lateral dimension to increase, the engaging-in amount of the closed flank of tooth of the barb-shaped of slip insert and surface pipe cooperation place is bigger, meshes more firmly, thereby hangs surface pipe reliably.
In the utility model ready-package wellhead assembly, Y type self-tightening sealing device is made up of y-type seal ring and metallic elastic opening support ring, on y-type seal ring, establish Y type lip, at the endoporus step of y-type seal ring metallic elastic opening support ring is installed, the lip of 2 y-type seal rings is the place, annular gap that relative shape is installed in fast-assembling wellhead body and surface pipe, and the endoporus that y-type seal ring contacts with surface pipe has metallic elastic opening support ring; Utilize the assembling magnitude of interference of sleeve pipe and y-type seal ring to set up low pressure seal; Rising along with oil gas borehole fluid pressure, the part high-pressure fluid enters in the y-type seal ring, annular region at two y-type seal rings and surface pipe composition forms the higher-pressure region, pressure forces the Y type lip of y-type seal ring to open, y-type seal ring is fitted with surface pipe closely, form reliable high pressure sealing; The stressed back of y-type seal ring internal diameter shrinks, and extrusion metal elastic opening support ring shrinks, and centering is held surface pipe tightly and protected y-type seal ring simultaneously.
In the utility model ready-package wellhead assembly, axle formula casing hanger mainly is made of the casing hanger body, and casing hanger body lower end endoporus is provided with casing threads, and a plurality of mud circulation grooves are located on the casing hanger body cylindrical; The casing hanger body is by casing threads link technique sleeve pipe, rely on the own wt of protective casing, the casing hanger body is located on the carrying step of fast-assembling wellhead body, casing hanger body upper end endoporus is installed the annular gap between sealing shroud Sealing Technology sleeve pipe and fast-assembling wellhead body, according to drilling technology, need to replace the mud that recycles in the pit shaft, mud will pass through from the mud circulation groove of casing hanger body.
In the utility model ready-package wellhead assembly, sealing shroud mainly is made of sealing shroud body, sealing ring, Y type self-tightening sealing device, sealing shroud body upper end endoporus is provided with trapezoidal motion thread, sealing shroud main body cylindrical is established the mud circulation outlet, on the outer ring of sealing shroud, be provided with cannelure, mounting spring collar in the cannelure, sealing shroud body endoporus has two Y of place type self-tightening sealing devices, and two sealing rings are arranged on the sealing shroud body cylindrical; After casing hanger has hung protective casing, sending into the taking-up instrument sends in the upper end endoporus that sealing shroud is seated in casing hanger by trapezoidal motion thread, sealing shroud is fixed on the fast-assembling wellhead body by spring collar, the annular gap of Y type self-tightening sealing device Sealing Technology sleeve pipe cylindrical and sealing shroud endoporus, the annular gap of sealing ring sealing fast-assembling body endoporus and sealing shroud cylindrical.
In the utility model ready-package wellhead assembly, boll-weevil hanger is mainly by the boll-weevil hanger body, spring collar, metal o-ring is formed, the lower end endoporus of boll-weevil hanger body is established tubing round thread, processing one cannelure on the cylindrical of boll-weevil hanger body, spring collar is installed in the boll-weevil hanger body cannelure, the top and bottom of boll-weevil hanger body cylindrical are established rubber seal respectively, metal o-ring is installed in the upper end endoporus of boll-weevil hanger body, on the cylindrical of metal o-ring backup seal is arranged, the boll-weevil hanger body is provided with the control valve line interface; Boll-weevil hanger hangs oil pipe by tubing round thread, boll-weevil hanger is fixed on the fast-assembling wellhead body by spring collar, the annular gap of boll-weevil hanger and fast-assembling wellhead body is by being contained in the sealing ring sealing on the boll-weevil hanger cylindrical, and upper flange endoporus and boll-weevil hanger body endoporus seal by metal o-ring.
In the utility model ready-package wellhead assembly, emergent slips hanger is mainly by rope, the slips housing, slip insert, locating piece, handle, latch segment, steady pin is formed, the slips housing is a two parts symmetrical along heartcut, slip insert is some equal portions along heartcut, the inner hole surface of slip insert is processed with the closed flank of tooth of barb-shaped, slip insert radially evenly is processed with screwed hole and the handle screw thread is complementary, the slips housing radially cylindrical to be processed with through hole coaxial with the slip insert radial screw bore and quantity is identical, the slip insert cylindrical has the conical surface of cooperation with slips housing endoporus, and fixed block is welded in the groove on the slips periphery; Handle is inserted in the radial hole of slips housing, with external screw thread and the slip insert internal thread radially of crossing the handle small end slip insert and slips housing are connected, handle turns clockwise, the conical surface of slip insert and slips housing is fitted tightly, couple together by latch segment and the steady pin symmetrical two parts of slips hanger of will meeting an urgent need, emergent slips hanger is embraced protective casing, emergent slips hanger can fall with protective casing, be located on the carrying step of fast-assembling wellhead body endoporus until emergent slips hanger, under action of inertia is impacted, slip insert is along moving down with the conical surface that cooperates of slips housing, the engaging-in protective casing contact surface of closed tooth on the slip insert inner surface, under the effect of the self gravitation of protective casing, protective casing drives slip insert along moving down with the conical surface that cooperates of slips housing, because the principle that wedge shape clamps, the closed flank of tooth of slip insert and the matching surface of protective casing mesh together dearly, in emergent slips hanger upper end emergent sealing shroud is installed, the annular space of emergent sealing shroud Sealing Technology sleeve pipe and fast-assembling wellhead body, the same sealing shroud of structure of emergent sealing shroud.
In the utility model ready-package wellhead assembly, flap type includes valve body, valve gap, valve rod, valve seat, valve plate, seat ring, sealing ring, fixed head, handwheel, valve gap is installed on the valve body, valve rod is installed on the valve plate, handwheel is installed on the valve rod, valve body is cylindrical perpendicular to the valve pocket of flow direction, valve plate is installed in the axial centre of valve body, the through hole of valve plate and valve hole are in same direction, fixed head, valve seat, seat ring, sealing ring is the left and right sides that the bilateral symmetry shape is installed in valve plate and constitutes sealing device in cylindrical valve pocket, valve seat is installed in valve seat orifice, valve plate is installed in axial centre, valve plate and valve rod are by being threaded, seat ring is installed in the hole with the concentric fixed head of valve hole, between seat ring and valve seat sealing ring is arranged, between valve seat and valve body sealing ring is arranged, the outer trapezoidal motion thread of valve rod lower end screws mutually with the interior trapezoidal motion thread of valve plate upper end; Drive moving up and down of valve rod rotation realization valve plate by rotating handwheel.
The utlity model has following advantage: 1. traditional casing head body and tubing head body link together by a plurality of bolts, nut and gasket ring, complex operation, labour intensity is big, casing head body and tubing head body are designed to whole fast-assembling wellhead body, from the drilling well to the completion, only need a kind of preventer of flange specification to be connected in the whole process with it, only need in the drilling process preventer is installed, and need not casing head and tubing head to be linked together with bolt, nut, gasket ring.2. because pit shaft is not vertically absolute, protective casing might can not be lowered into projected depth in the process of G.I.H, this moment, axle formula casing hanger can not be located the step B place of fast-assembling wellhead body, design emergent sealing shroud and emergent slips hanger for this reason, hang protective casing with emergent slips hanger and be located the step B place of fast-assembling wellhead body, the protective casing redundance cuts away, the annular space that utilizes emergent sealing shroud sealing fast-assembling wellhead body and protective casing to form has been simplified the drill-well operation program.3. by spring collar sealing shroud, boll-weevil hanger and fast-assembling wellhead body are fixed together, have changed, reduced the leakage link, have sealing reliability with the fixing traditional structure of a plurality of lock screw, compact conformation, fitting operation is efficient and convenient.4. design has the circulation of drilling fluid groove so that drilling fluid passes through on axle formula casing hanger and the sealing shroud, has saved the drilling completion time.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the slips hanger structural representation of Fig. 1.
Fig. 3 is the Y type self-tightening sealing device structural representation of Fig. 1.
Fig. 4 is the axle formula casing hanger structural representation of Fig. 1.
Fig. 5 is the sealing shroud structural representation of Fig. 1.
Fig. 6 is the boll-weevil hanger structural representation of Fig. 1.
Fig. 7 is the emergent slips hanger structural representation of Fig. 1.
Fig. 8 is the flap type structural representation of Fig. 1.
Among the figure: 1. oil pipe, 2. protective casing, 3. surface pipe, 4. bolt, 5. slips hanger, 6. fast-assembling wellhead body, 7.Y shape self-tightening sealing device, 8. axle formula casing hanger, 9. flap type, 10. sealing shroud, 11. flap types, 12. boll-weevil hangers, 13. spring collar, 14. upper flanges, 15. spring collars, 16. emergent sealing shrouds, 17. emergent slips hanger, 18. slips housings, 19. slip inserts, 20.Y RunddichtringO, 21.Y the type lip, 22. metallic elastic opening support rings, 23. casing hanger bodies, 24. mud circulation grooves, 25. casing threads, 26. sealing shroud bodies, 27. cannelures, the outlet of 28. mud circulation, 29. trapezoidal motion thread, 30. sealing rings, 31. metal o-rings, 32. rubber seal, 33. boll-weevil hanger bodies, 34. tubing round thread, 35. the control valve line interface, 36. ropes, 37. locating pieces, 38. handle, 39. latch segments, 40. steady pins, 41. valve body, 42. fixed heads, 43. valve seats, 44. valve plate, 45. handwheels, 46,47. sealing ring, 48. seat ring, 49. valve rods, 50. valve gaps.
The specific embodiment
As shown in Figure 1, this ready-package wellhead assembly is mainly by oil pipe 1, protective casing 2, surface pipe 3, slips hanger 5, fast-assembling wellhead body 6, Y type self-tightening sealing device 7, axle formula casing hanger 8, sealing shroud 10, boll-weevil hanger 12, spring collar 13 is formed, casing head body and tubing head body are designed to whole fast-assembling wellhead body 6, surface pipe 3 is clamped on the slips hanger 5 by the closed flank engagement wedge shape of slips hanger 5, bolt 4 on the slips hanger 5 is connected the bottom of fast-assembling wellhead body 6 with slips hanger, the annular gap of Y type self-tightening sealing device 7 sealing surface pipes 3 and fast-assembling wellhead body 6; Protective casing 2 is connected on the axle formula casing hanger 8 by screw thread pair, axle formula casing hanger 8 is seated in the carrying step place of fast-assembling wellhead body 6 endoporus, sealing shroud 10 is fixed on the fast-assembling wellhead body 6 by spring collar, and fast-assembling wellhead body 6 is sealed by sealing shroud 10 with the annular gap of axle formula casing hanger 8; Boll-weevil hanger 12 is seated in the upper end of sealing shroud 10, hang oil pipe 1 by screw thread pair on the boll-weevil hanger 12, boll-weevil hanger 12 is fixed on the fast-assembling wellhead body 6 by spring collar 13, boll-weevil hanger 12 seals by the rubber seal 32 that is contained on the boll-weevil hanger cylindrical with the annular gap of fast-assembling wellhead body 6, and upper flange 14 endoporus and boll-weevil hanger body endoporus seal with metal o-ring 31.
In the utility model ready-package wellhead assembly, if protective casing 2 is not because pit shaft vertically can not be lowered to the precalculated position, axle formula casing hanger can not be located the carrying step place of fast-assembling wellhead body 6, then hang protective casing 2 by emergent slips hanger 17, the annular space of emergent sealing shroud 16 Sealing Technology sleeve pipes 2 and fast-assembling wellhead body 6, emergent sealing shroud 16 is fixed on the fast-assembling wellhead body 6 by spring collar 15.
In the utility model ready-package wellhead assembly, fast-assembling wellhead body 6 is provided with interface, and flap type 9,11 is installed on interface, is provided with standby outlet on the symmetric position of fast-assembling wellhead body 6, and gasket ring, flange, instrument etc. are installed in the standby outlet.
As shown in Figure 2, in the utility model ready-package wellhead assembly, slips hanger mainly is made up of bolt 4, slip insert 19, slips housing 18, and the bore area of slip insert 19 is processed with the closed flank of tooth of side thorn shape, and the cooperation cross section of slip insert 19 and slips housing 18 is for the bipyramid face
Shape, the otch that cuts away on the circumference of slip insert 19 behind the part material is " product " shape; By special tool the external diameter of slip insert 19 is shunk its slips housing 18 of packing into, by bolt 4 slips hanger 5 is connected with fast-assembling wellhead body 6, surface pipe 3 is penetrated the endoporus of slip insert 19, screw bolt clockwise, then slips housing 18 can move up, make slip insert 19, the cooperation conical surface size thickening of slips housing 18, endoporus reduces, force the surface of the engaging-in surface pipe 3 of the closed flank of tooth of barb-shaped of slip insert 19 bore areas, be released into surface pipe 3 this moment, under the self gravitation effect of surperficial sleeve pipe 3, surface pipe 3 drive slip inserts 19 move down along the cooperation conical surface of slips housing 18, make to cooperate conical surface lateral dimension to increase, and the engaging-in amount of the closed flank of tooth of the barb-shaped of slip insert 19 and surface pipe 3 cooperation places is bigger, mesh more firmly, thereby hang surface pipe 3 reliably.
As shown in Figure 3, in the utility model ready-package wellhead assembly, Y type self-tightening sealing device 7 is y-type seal ring 20 and metallic elastic opening support ring 22, on y-type seal ring 20, establish Y type lip 21, at the step of the endoporus of y-type seal ring metallic elastic opening support ring 22 is installed, the Y type lip 21 of 2 y-type seal rings is relative shape and y-type seal ring 20 is installed at the annular gap place of fast-assembling wellhead body 6 with surface pipe 3, and there is metallic elastic opening support ring 22 at the endoporus place that y-type seal ring 20 contacts with surface pipe 3; Utilize the assembling magnitude of interference of sleeve pipe and y-type seal ring 20 to set up low pressure seal; Rising along with oil gas borehole fluid pressure, the part high-pressure fluid enters in the y-type seal ring 20, the annular region of forming at two y-type seal rings 20 and surface pipe 3 forms the higher-pressure region, pressure forces the Y type lip 21 of y-type seal ring 20 to open and y-type seal ring 20 is fitted with surface pipe 3 closely, form reliable high pressure sealing; Y-type seal ring 20 stressed back internal diameters shrink, and extrusion metal elastic opening support ring 22 shrinks, and centering is held surface pipe tightly, has protected y-type seal ring 20 simultaneously.
As shown in Figure 4, in the utility model ready-package wellhead assembly, axle formula casing hanger 8 mainly is made of casing hanger body 23, and casing hanger body 23 lower end endoporus are provided with casing threads 25, and a plurality of mud circulation grooves 24 are established on the cylindrical of casing hanger body 23; Casing hanger body 23 is by casing threads 25 link technique sleeve pipes 2, rely on the own wt of protective casing 2, casing hanger body 23 is located on the carrying step of fast-assembling wellhead body 6, the annular gap that casing hanger body 23 upper end endoporus installation sealing shroud 10 Sealing Technology sleeve pipes 2 and fast-assembling wellhead body are 6, according to drilling technology, when needing to replace the mud that recycles in the pit shaft, mud will pass through from the mud circulation groove 24 of casing hanger body 23.
As shown in Figure 5, in the utility model ready-package wellhead assembly, sealing shroud 10 mainly is made of sealing shroud main body 26, sealing ring 30, Y type self-tightening sealing device 7, sealing shroud main body 26 upper end endoporus are provided with trapezoidal motion thread 29, sealing shroud main body 26 upper end cylindricals are established mud circulation outlet 28, are provided with cannelure 27 on the outer ring of sealing shroud 10, mounting spring collar in the cannelure 27, sealing shroud body 26 endoporus have two Y of place type self-tightening sealing devices 7, and two sealing rings 30 are arranged on sealing shroud body 26 cylindricals; After casing hanger has hung protective casing 2, clean fast-assembling well head endoporus, send into the taking-up instrument and send into the upper surface that sealing shroud 10 is seated in casing hanger by trapezoidal motion thread 29, sealing shroud 10 is fixed on the fast-assembling wellhead body 6 by spring collar, the annular gap of Y type self-tightening sealing device 7 Sealing Technology sleeve pipes, 2 cylindricals and sealing shroud 10 endoporus, the annular gap of sealing ring 30 sealing fast-assembling body endoporus and sealing shroud 10 cylindricals.
As shown in Figure 6, in the utility model ready-package wellhead assembly, boll-weevil hanger 12 is mainly by boll-weevil hanger body 33, spring collar 13, metal o-ring 31 is formed, the upper end of boll-weevil hanger body 33, the lower end endoporus is established tubing round thread 34, processing one cannelure 27 on the cylindrical of boll-weevil hanger body 33, spring collar 13 is installed in the cannelure 27 of boll-weevil hanger body 33, the top and bottom of boll-weevil hanger body 33 cylindricals are established rubber seal 32 respectively, metal o-ring 31 is installed in the upper end endoporus of boll-weevil hanger body 33, on the cylindrical of metal o-ring 31 backup seal is arranged, boll-weevil hanger body 33 is provided with control valve line interface 35; Boll-weevil hanger 12 hangs oil pipe by tubing round thread 34, boll-weevil hanger 12 is fixed on the fast-assembling wellhead body 6 by spring collar, boll-weevil hanger 12 seals by the sealing ring that is contained on boll-weevil hanger 12 cylindricals with the annular gap of fast-assembling wellhead body 6, and upper flange 14 endoporus and boll-weevil hanger body 33 endoporus are by metal o-ring 31 sealings.
As shown in Figure 7, in the utility model ready-package wellhead assembly, emergent slips hanger 17 is mainly by rope 36, slips housing 18, slip insert 19, locating piece 37, handle 38, latch segment 39, steady pin 40 is formed, slips housing 18 is a two parts symmetrical along heartcut, slip insert 19 is some equal portions along heartcut, the inner hole surface of slip insert 19 is processed with the closed flank of tooth of barb-shaped, slip insert 19 radially evenly is processed with screwed hole and handle 38 screw threads are complementary, slips housing 18 radially cylindrical to be processed with through hole coaxial with slip insert 19 radial screw bore and quantity is identical, slip insert 19 cylindricals have the conical surface of cooperation with slips housing 18 endoporus, and locating piece 37 is welded in the groove on the slips periphery; Handle 38 is inserted in the radial hole of slips housing 18, with the external screw thread of crossing handle 38 small ends and slip insert 19 internal thread radially slip insert 19 and slips housing 18 are connected, handle 38 turns clockwise, the slip insert 19 and the conical surface of slips housing 18 are fitted tightly, couple together and embrace protective casing 2 by latch segment 39 and the steady pin 40 slips hanger 17 symmetrical two parts of will meeting an urgent need, emergent slips hanger 17 can fall with protective casing 2, be located on the step of fast-assembling wellhead body 6 endoporus until emergent slips hanger 17, under action of inertia is impacted, slip insert 19 is along moving down with the conical surface that cooperates of slips housing 18, the contact surface of the engaging-in protective casing 2 of the closed tooth of the barb-shaped on slip insert 19 inner surfaces, under the effect of the self gravitation of protective casing 2, protective casing 2 drives slip insert 19 along moving down with the conical surface that cooperates of slips housing 18, because the principle that wedge shape clamps, deep the meshing together of matching surface of the closed flank of tooth of slip insert 19 and protective casing 2, emergent sealing shroud 16 is installed in emergent slips hanger 17 upper ends, between the annular of emergent sealing shroud 16 Sealing Technology sleeve pipes and fast-assembling wellhead body, emergent sealing shroud 16 structures are with sealing shroud 10.
As shown in Figure 8, in the utility model ready-package wellhead assembly, flap type 9 includes valve body 41, valve gap 50, valve rod 49, valve seat 43, valve plate 44, seat ring 48, sealing ring 46,47, fixed head 42, handwheel 45, valve gap (50) is installed on the valve body (41), the lower end, center that valve rod (49) passes valve gap (50) is connected with the internal thread of valve plate upper end, and the valve rod upper end is connected with handwheel (45).Valve body 41 is cylindrical perpendicular to the valve pocket of flow direction, valve seat 43, fixed head 42, seat ring 48, sealing ring 46,47 are the left and right sides that the bilateral symmetry shape is installed in valve plate 44 constitutes sealing device in cylindrical valve pocket, valve seat 43 is installed in valve seat orifice, valve plate 44 is installed in valve body 41 axial centre, the through hole of valve plate 44 and valve body 41 through holes are in same direction, seat ring 48 is installed in the hole with the concentric fixed head 42 of valve body 41 through holes, between seat ring 48 and valve seat 43, sealing ring 46 is arranged, between valve seat 43 and valve body 41 sealing ring 47 is arranged, the outer trapezoidal motion thread of valve rod 49 lower ends screws mutually with the interior trapezoidal motion thread of valve plate 44 upper ends; Drive valve rod 50 rotations by rotating handwheel 45, realize moving up and down of valve plate 44.
The utility model is designed to whole fast-assembling wellhead body with casing head body and tubing head body, and wherein the sealing of the suspension of oil pipe, protective casing, surface pipe, annular space realizes by following structure:
1. the suspension of surface pipe: by screwing the bolt 4 on the slips hanger 5, the principle of utilizing wedge shape to clamp makes the closed flank of tooth at the A place of slips hanger 5 be meshed with surface pipe 3, make the firm bottom that is suspended on fast-assembling wellhead body 6 of surface pipe 3, by the annular gap between Y shape self-tightening sealing device 7 sealing surface pipes 3 and the fast-assembling wellhead body 6.
2. the suspension of protective casing: axle formula casing hanger 8 and protective casing 2 couple together by screw thread pair, utilize the deadweight of sleeve pipe to be seated in the carrying step B place of fast-assembling wellhead body 6, sealing shroud 10 is in place, sealing shroud 10 sealing fast-assembling wellhead body 6 and the annular space that axle formula casing hanger 8 forms utilize spring collar 13 that sealing shroud 10 and fast-assembling wellhead body 6 are fixed together.
Wherein, emergency is handled: if protective casing 2 is not because pit shaft vertically can not be lowered to the precalculated position, when axle formula hanger 8 can not be located the plummer terrace B place of fast-assembling well head basis, then hang protective casing 2 with emergent slips hanger 17, with emergent sealing shroud 16 these 15 formed annular spaces of Sealing Technology sleeve pipes 2 and fast-assembling well head, utilize spring collar 15 sealing shroud 16 of will meeting an urgent need to be fixed together with fast-assembling wellhead body 6.
3. the suspension of oil pipe: the upper end that boll-weevil hanger 12 is located sealing shroud 10 hangs oil pipe 1 by screw thread pair, utilize spring collar that boll-weevil hanger 12 and fast-assembling wellhead body 6 are fixed together, boll-weevil hanger 12 seals by the rubber seal 32 that is contained on the boll-weevil hanger cylindrical with the annular gap of fast-assembling wellhead body 6, and upper flange 14 endoporus and boll-weevil hanger body endoporus seal with metal o-ring 31.
Wherein, axle formula casing hanger 18 has the circulation of drilling fluid path promptly to be processed with groove in the periphery design; Sealing shroud 10 and emergent sealing shroud 16 also design the drilling fluid outlet; The package size of axle formula casing hanger, sealing shroud equates with the package size of emergent sealing shroud, emergent slips hanger, to guarantee exchange between the two.
Claims (10)
1. ready-package wellhead assembly, it is characterized in that: this ready-package wellhead assembly is mainly by oil pipe (1), protective casing (2), surface pipe (3), slips hanger (5), fast-assembling wellhead body (6), Y type self-tightening sealing device (7), axle formula casing hanger (8), sealing shroud (10), boll-weevil hanger (12), spring collar (13) is formed, casing head body and tubing head body are designed to whole fast-assembling wellhead body (6), surface pipe (3) is clamped on the slips hanger (5) by the closed flank engagement wedge shape of slips hanger (5), slips hanger (5) is fixed on the bottom of fast-assembling wellhead body (6) by bolt (4), the annular gap of Y type self-tightening sealing device (7) sealing surface pipe (3) and fast-assembling wellhead body (6); Axle formula casing hanger (8) hangs protective casing (2) by screw thread pair, axle formula casing hanger (8) is seated in the carrying step place of fast-assembling wellhead body (6) endoporus, sealing shroud (10) is fixed on the fast-assembling wellhead body (6) by spring collar, the annular gap of sealing shroud (10) sealing fast-assembling wellhead body (6) and axle formula casing hanger (8); Boll-weevil hanger (12) is seated in the upper end of sealing shroud (10), boll-weevil hanger (12) is gone up by screw thread pair and is hung oil pipe (1), boll-weevil hanger (12) is fixed on the fast-assembling wellhead body (6) by spring collar (13), boll-weevil hanger (12) seals by the rubber seal (32) that is contained on the boll-weevil hanger cylindrical with the annular gap of fast-assembling wellhead body (6), and upper flange (14) endoporus and boll-weevil hanger body endoporus seal with metal o-ring (31).
2. ready-package wellhead assembly according to claim 1, it is characterized in that: slips hanger mainly is made up of bolt (4), slip insert (19), slips housing (18), the bore area of slip insert (19) is processed with the closed flank of tooth of barb-shaped, the cooperation cross section of slip insert (19) and slips housing (18) is shape for the bipyramid face, the otch that cuts away on the circumference of slip insert (19) behind the part material is " product " shape, slip insert (19) is installed in the inside of slips housing (18), and slips housing (18) is connected fast-assembling wellhead body (6) bottom by bolt (4).
3. ready-package wellhead assembly according to claim 1, it is characterized in that: Y type self-tightening sealing device (7) is made up of y-type seal ring (20) and metallic elastic opening support ring (22), on y-type seal ring (20), establish Y type lip (21), metallic elastic opening support ring (22) is installed on the interior round platform rank of y-type seal ring.
4. ready-package wellhead assembly according to claim 1, it is characterized in that: axle formula casing hanger (8) mainly is made of casing hanger body (23), the lower end endoporus of casing hanger body (23) is provided with casing threads (25), a plurality of mud circulation grooves (24) are established on casing hanger body (23) cylindrical, and the upper end endoporus of casing hanger body (23) is installed sealing shroud (10).
5. ready-package wellhead assembly according to claim 1, it is characterized in that: sealing shroud (10) is mainly by sealing shroud main body (26), sealing ring (30), Y type self-tightening sealing device (7) constitutes, the upper end endoporus of sealing shroud main body (26) is provided with trapezoidal motion thread (29), the upper end cylindrical of sealing shroud main body (26) is established mud circulation outlet (28), cannelure (27) is arranged on the outer ring of sealing shroud (10), the interior mounting spring collar of cannelure (27), sealing shroud body (26) endoporus has two Y of place type self-tightening sealing devices (7), on sealing shroud body (26) cylindrical two sealing rings (30) is arranged.
6. ready-package wellhead assembly according to claim 1, it is characterized in that: emergent slips hanger (17) is installed in fast-assembling wellhead body (6) and goes up the auxiliary protective casing (2) that hangs, by the annular space of emergent sealing shroud (16) Sealing Technology sleeve pipe (2) with fast-assembling wellhead body (6), emergent sealing shroud (16) is fixed on the fast-assembling wellhead body (6) by spring collar (15).
7. ready-package wellhead assembly according to claim 6, it is characterized in that: emergent slips hanger (17) is mainly by rope (36), slips housing (18), slip insert (19), locating piece (37), handle (38), latch segment (39), steady pin (40) is formed, slips housing (18) is a two parts symmetrical along heartcut, slip insert (19) is some equal portions along heartcut, the inner hole surface of slip insert (19) is processed with the closed flank of tooth of barb-shaped, slip insert (19) radially evenly is processed with screwed hole and handle (38) screw thread and is complementary, slips housing (18) radially cylindrical to be processed with through hole coaxial with slip insert (19) radial screw bore and quantity is identical, slip insert (19) cylindrical has the conical surface of cooperation with slips housing (18) endoporus, locating piece (37) is welded in the groove on the slip insert periphery, and latch segment (39) and steady pin (40) are installed on the slips housing (18).
8. ready-package wellhead assembly according to claim 1, it is characterized in that: boll-weevil hanger (12) is mainly by boll-weevil hanger body (33), spring collar (13), metal o-ring (31) is formed, the upper end of boll-weevil hanger body (33), the lower end endoporus is established tubing round thread (34), processing one cannelure (27) on the cylindrical of boll-weevil hanger body (33), spring collar (13) is installed in boll-weevil hanger body (33) cannelure (27), the top and bottom of boll-weevil hanger body (33) cylindrical are established rubber seal (32) respectively, metal o-ring (31) is installed in the upper end endoporus of boll-weevil hanger body (33), and control valve line interface (35) is established on the boll-weevil hanger body (33).
9. ready-package wellhead assembly according to claim 1 is characterized in that: fast-assembling wellhead body (6) is provided with interface, and flap type (9,11) is installed on interface.
10. ready-package wellhead assembly according to claim 9, it is characterized in that: flap type includes valve body (41), valve gap (50), valve rod (49), fixed head (42), valve plate (44), valve seat (43), seat ring (48), sealing ring (46,47), handwheel (45), valve gap (50) is installed on the valve body (41), the lower end, center that valve rod (49) passes valve gap (50) is connected with the internal thread of valve plate upper end, the valve rod upper end is connected with handwheel (45), valve body (41) is cylindrical perpendicular to the valve pocket of flow direction, fixed head (42), valve seat (43), seat ring (48), sealing ring (46,47) be the left and right sides that the bilateral symmetry shape is installed in valve plate (44) and in cylindrical valve pocket, constitute sealing device, valve seat (43) is installed in valve seat orifice, valve plate (44) is installed in the valve body axial centre, the through hole of the through hole of valve plate (44) and valve body (41) is in same direction, seat ring (48) is installed in the hole with the concentric fixed head (42) of valve body (41) through hole, between seat ring (48) and valve seat (43), sealing ring (46) is arranged, between valve seat (43) and valve body (41) sealing ring (47) is arranged, the outer trapezoidal motion thread of valve rod (49) lower end screws mutually with the interior trapezoidal motion thread of valve plate (44) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077839 CN200949440Y (en) | 2006-09-22 | 2006-09-22 | Fast assembled wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077839 CN200949440Y (en) | 2006-09-22 | 2006-09-22 | Fast assembled wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200949440Y true CN200949440Y (en) | 2007-09-19 |
Family
ID=38891983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620077839 Expired - Lifetime CN200949440Y (en) | 2006-09-22 | 2006-09-22 | Fast assembled wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200949440Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644149B (en) * | 2009-08-25 | 2011-10-05 | 中国石油天然气集团公司 | Integral type level oil extraction wellhead equipment |
| CN102322236A (en) * | 2011-05-31 | 2012-01-18 | 宝鸡石油机械有限责任公司 | Integrated oil casing head |
| CN102733772A (en) * | 2012-07-12 | 2012-10-17 | 刘庆梅 | Christmas tree of tubing head for borehole operation without killing well |
| CN103670289A (en) * | 2013-12-08 | 2014-03-26 | 无锡蚂蚁微威科技有限公司 | Oil well pipeline |
| CN108086937A (en) * | 2018-01-12 | 2018-05-29 | 科莱斯（天津）电热科技有限公司 | A kind of high-pressure well mouth hanger controls total valve gear |
| CN109267956A (en) * | 2018-10-24 | 2019-01-25 | 山东科瑞井控系统制造有限公司 | It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration |
| CN109281629A (en) * | 2018-10-29 | 2019-01-29 | 四川宝石机械钻采设备有限责任公司 | A kind of four-in-one body formula wellhead assembly |
| CN109653700A (en) * | 2019-02-15 | 2019-04-19 | 中为(上海)能源技术有限公司 | For its operating method of the Modular high-temperature well head well control system of coal underground gasifying technology |
| CN109915058A (en) * | 2019-04-26 | 2019-06-21 | 李永珍 | A kind of oil field bailing well Special wellhead |
| CN113006731A (en) * | 2021-04-23 | 2021-06-22 | 京鸿石油钻采工程技术有限公司 | Self-locking casing head |
| CN113294115A (en) * | 2021-07-15 | 2021-08-24 | 盐城市琪航石油机械有限公司 | Casing head for oil extraction wellhead device |
| CN116335573A (en) * | 2023-03-27 | 2023-06-27 | 江苏亿德隆石油机械有限公司 | Digital intelligent gas production wellhead device |
-
2006
- 2006-09-22 CN CN 200620077839 patent/CN200949440Y/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644149B (en) * | 2009-08-25 | 2011-10-05 | 中国石油天然气集团公司 | Integral type level oil extraction wellhead equipment |
| CN102322236A (en) * | 2011-05-31 | 2012-01-18 | 宝鸡石油机械有限责任公司 | Integrated oil casing head |
| CN102322236B (en) * | 2011-05-31 | 2014-06-04 | 宝鸡石油机械有限责任公司 | Integrated oil casing head |
| CN102733772A (en) * | 2012-07-12 | 2012-10-17 | 刘庆梅 | Christmas tree of tubing head for borehole operation without killing well |
| CN102733772B (en) * | 2012-07-12 | 2015-02-04 | 刘庆梅 | Christmas tree of tubing head for borehole operation without killing well |
| CN103670289A (en) * | 2013-12-08 | 2014-03-26 | 无锡蚂蚁微威科技有限公司 | Oil well pipeline |
| CN108086937A (en) * | 2018-01-12 | 2018-05-29 | 科莱斯（天津）电热科技有限公司 | A kind of high-pressure well mouth hanger controls total valve gear |
| CN109267956B (en) * | 2018-10-24 | 2024-03-29 | 威飞海洋装备制造有限公司 | Wellhead bottom connecting device for shortening drilling operation time |
| CN109267956A (en) * | 2018-10-24 | 2019-01-25 | 山东科瑞井控系统制造有限公司 | It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration |
| CN109281629A (en) * | 2018-10-29 | 2019-01-29 | 四川宝石机械钻采设备有限责任公司 | A kind of four-in-one body formula wellhead assembly |
| CN109653700B (en) * | 2019-02-15 | 2023-06-23 | 中为(上海)能源技术有限公司 | Operation method of modularized high-temperature wellhead well control system for underground coal gasification process |
| CN109653700A (en) * | 2019-02-15 | 2019-04-19 | 中为(上海)能源技术有限公司 | For its operating method of the Modular high-temperature well head well control system of coal underground gasifying technology |
| CN109915058A (en) * | 2019-04-26 | 2019-06-21 | 李永珍 | A kind of oil field bailing well Special wellhead |
| CN113006731A (en) * | 2021-04-23 | 2021-06-22 | 京鸿石油钻采工程技术有限公司 | Self-locking casing head |
| CN113006731B (en) * | 2021-04-23 | 2022-08-12 | 京鸿石油钻采工程技术有限公司 | Self-locking casing head |
| CN113294115A (en) * | 2021-07-15 | 2021-08-24 | 盐城市琪航石油机械有限公司 | Casing head for oil extraction wellhead device |
| CN113294115B (en) * | 2021-07-15 | 2023-12-05 | 盐城市琪航石油机械有限公司 | Casing head for oil extraction wellhead device |
| CN116335573A (en) * | 2023-03-27 | 2023-06-27 | 江苏亿德隆石油机械有限公司 | Digital intelligent gas production wellhead device |
| CN116335573B (en) * | 2023-03-27 | 2023-09-26 | 江苏亿德隆石油机械有限公司 | Digital intelligent gas production wellhead device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jinhu Jinshi Valve Co., Ltd. Assignor: Jin Petroleum Gas Wellhead Science and Technology Co., Ltd., Jiangsu Contract fulfillment period: 2009.5.5 to 2015.5.4 Contract record no.: 2009320001429 Denomination of utility model: Fast assembled wellhead device Granted publication date: 20070919 License type: Exclusive license Record date: 20090807 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.5.5 TO 2015.5.4; CHANGE OF CONTRACT Name of requester: JINHU JINSHI VALVE CO., LTD. Effective date: 20090807 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070919 |
|
| EXPY | Termination of patent right or utility model |