A kind of ocean underwater vertical production tree
Technical field
The utility model belongs to petroleum gas drilling and extracting equipment technical field, relates to a kind of ocean underwater vertical production tree.
Background technology
Subsea production tree carries out the device of shaft mouth operation when being production of marine oil gas field and underground work, comprise production tree body, Christmas tree big four joint, production valve, annular space valve, boll-weevil hanger, potted component etc.The flow and the pressure of well head can be taken into account the enforcement of multiple oil production technology measure simultaneously when production tree was mainly used in the production of control oil gas well.
Subsea production tree can be divided into vertical production tree by its installation site that produces main valve and be called not only " traditional production tree " and horizontal production tree but also be called " horizontal christmas tree " two kinds, what the production main valve was arranged on the vertical latus rectum is vertical production tree, and horizontal production tree produces main valve then on the production runner of level.
Conventional ocean underwater vertical production tree boll-weevil hanger is the bilateral footpath, during installation, needs on surface facilities such as floating drilling platform etc. boll-weevil hanger to be lowered to and is installed in the underwater wellhead by special bilateral footpath marine riser, and by its retaining mechanism locking; The stifled oil pipe of going up, remove preventer after, again production tree is installed on the underwater wellhead.
Because boll-weevil hanger is installed in the underwater wellhead, though the outside connection dimension of underwater wellhead has common-use size, but its inside dimension has nothing in common with each other, so the production tree of different manufacturers and underwater wellhead are normally unmatched, so require underwater wellhead and underwater vertical production tree to provide by same producer.
Simultaneously, because boll-weevil hanger is installed on the underwater wellhead production casing hanger, check whether the installation of production casing hanger puts in place so need be lowered to special tool(s) before the installation boll-weevil hanger, after guaranteeing that boll-weevil hanger is installed on the inner layer sleeve, its retaining mechanism can be locked to the locking slot of well head head inner chamber, when the operation of deep-sea oil gas field, being lowered to and reclaiming of checking tool consumes a large amount of activity durations, thereby increases operating cost.
Moreover, because boll-weevil hanger, being connected of various liquid road and circuit arranged between production tree and the subsea equipment, so boll-weevil hanger and the necessary when mounted relative subsea equipment orientation alignment of production tree, to guarantee that various liquid road and circuit interface align with the corresponding interface of subsea equipment, so preventer elder generation and subsea equipment orientation alignment when installing, boll-weevil hanger increases the orientation alignment that a directed pipe nipple is used for boll-weevil hanger by the bearing unit in the preventer or outside preventer again, so the well drilling blowout prevention device must carry out corresponding modification or increase the installation that a directed pipe nipple just can be used for the underwater vertical production tree.
At last, in the time need reclaiming production tree, need take influidic pipe lines all on the production tree apart, need connect again again during installation, increase inspection and repair shop and taken time owing to reasons such as maintenance.
Summary of the invention
The purpose of this utility model provides a kind of ocean underwater vertical production tree, has solved the installation requirement height that exists in the prior art, can't mate and keep in repair complexity between the production tree of different manufacturers and the wellhead assembly, awkward problem.
First kind of technical scheme that the utility model adopted is, a kind of ocean underwater vertical production tree, comprise Christmas tree big four joint, the inner chamber of Christmas tree big four joint is provided with boll-weevil hanger, the boll-weevil hanger seat is provided with retaining mechanism and sealing between boll-weevil hanger and the Christmas tree big four joint inwall on the step of Christmas tree big four joint inwall; Have workover passageway and annulus access B on the Christmas tree big four joint inwall, workover passageway and annulus access B lay respectively at the upper and lower height place at boll-weevil hanger; The top of Christmas tree big four joint is equipped with production tree, the upper end of production tree is provided with tree cap, the production flow passage side of production tree has produces runner B and conversion runner, produce runner B and be provided with the production flutter valve, be provided with production pumping valve and shutoff device B in the production runner above producing runner B, be provided with the production main valve at the production runner that is arranged in below the conversion runner; Be connected with production runner module in the outside of Christmas tree big four joint, produce in the runner module and be provided with annulus access, the external service line of the outlet of annulus access, the annulus access outlet is provided with annulus wing valve, the inlet of annulus access is provided with the annular space main valve, the vertical inlet workover passageway B of annulus access is respectively equipped with well workover valve and switching valve, well workover valve, annular space main valve and switching valve are connected with workover passageway, annulus access B and conversion runner respectively again, and production runner B is connected by producing flutter valve and being arranged on the outlet of producing the production runner C in the runner module; Be communicated with by packoff nipple between the production runner in latus rectum in the boll-weevil hanger and the production tree and seal; Be provided with shutoff device in the latus rectum in the boll-weevil hanger.
Second kind of technical scheme that the utility model adopted is, a kind of ocean underwater vertical production tree, comprise Christmas tree big four joint, the inner chamber of Christmas tree big four joint is provided with boll-weevil hanger, the boll-weevil hanger seat is provided with retaining mechanism and sealing between boll-weevil hanger and the Christmas tree big four joint inwall on the step of Christmas tree big four joint inwall; Have workover passageway and annulus access B on the Christmas tree big four joint, workover passageway is communicated with annulus access B by the well workover valve, and workover passageway is communicated with big four inner chamber and big four annular space by the well workover valve; Have workover passageway and annulus access B on the Christmas tree big four joint, workover passageway and annulus access B lay respectively at the upper and lower height place at boll-weevil hanger; The top of Christmas tree big four joint is equipped with production tree, the upper end of production tree is provided with tree cap, the production flow passage side of production tree has produces runner B and conversion runner, produce runner B and be provided with the production flutter valve, be provided with production pumping valve and shutoff device B in the production runner above producing runner B, be provided with the production main valve at the production runner that is arranged in below the conversion runner; Be connected with production runner module in the outside of Christmas tree big four joint, produce in the runner module and be provided with annulus access, the external service line of the outlet of annulus access, the annulus access outlet is provided with annulus wing valve, the inlet of annulus access is provided with the annular space main valve, the vertical inlet workover passageway B of annulus access is provided with switching valve, annulus access is connected by annular space main valve and annulus access B, workover passageway B switching valve and conversion runner are connected, and produce runner B and are connected by the production runner C in producing flutter valve and being arranged on production runner module; Be communicated with by packoff nipple between the production runner in latus rectum in the boll-weevil hanger and the production tree and seal; Be provided with shutoff device in the latus rectum in the boll-weevil hanger.
The third technical scheme that the utility model adopted is, a kind of ocean underwater vertical production tree, comprise Christmas tree big four joint, the inner chamber of Christmas tree big four joint is provided with boll-weevil hanger, the boll-weevil hanger seat is provided with retaining mechanism and sealing between boll-weevil hanger and the Christmas tree big four joint inwall on the step of Christmas tree big four joint inwall; Have workover passageway and annulus access B on the Christmas tree big four joint inwall, workover passageway and annulus access B lay respectively at the upper and lower height place at boll-weevil hanger; The upper port of Christmas tree big four joint is equipped with production tree, the upper end of production tree is provided with tree cap, the production flow passage side of production tree has produces runner B and conversion runner, produce runner B and be provided with the production flutter valve, be provided with production pumping valve and shutoff device B in the production runner above producing runner B, be provided with the production main valve in the production runner below the conversion runner; The conversion runner is communicated with the big four inner chamber by switching valve; Be connected with production runner module in the outside of Christmas tree big four joint, produce in the runner module and be provided with annulus access, the external service line of the outlet of annulus access, the annulus access outlet is provided with annulus wing valve, the inlet of annulus access is provided with the annular space main valve, the vertical inlet workover passageway B of annulus access is provided with the well workover valve, workover passageway B connects by well workover valve and workover passageway, annulus access is connected by annular space main valve annular space channel B, produces runner B and is connected by the production runner C in producing flutter valve and being arranged on production runner module; Be communicated with by packoff nipple between the production runner in latus rectum in the boll-weevil hanger and the production tree and seal; Be provided with shutoff device in the latus rectum in the boll-weevil hanger.
The 4th kind of technical scheme that the utility model adopted is, a kind of ocean underwater vertical production tree, comprise Christmas tree big four joint, the inner chamber of Christmas tree big four joint is provided with boll-weevil hanger, the boll-weevil hanger seat is provided with retaining mechanism and sealing between boll-weevil hanger and the Christmas tree big four joint inwall on the step of Christmas tree big four joint inwall; Have workover passageway and annulus access B on the Christmas tree big four joint, annulus access B is positioned at the below of boll-weevil hanger; The upper port of Christmas tree big four joint is equipped with production tree, the upper end of production tree is provided with tree cap, the production flow passage side of production tree has produces runner B and conversion runner, produce runner B and be provided with the production flutter valve, be provided with production pumping valve and shutoff device B in the production runner above producing runner B, be provided with the production main valve in the production runner below the conversion runner; Be connected with production runner module in the outside of Christmas tree big four joint, produce in the runner module and be provided with annulus access, the external service line of the outlet of annulus access, the annulus access outlet is provided with annulus wing valve, the horizontal access of annulus access is provided with the annular space main valve, and the annulus access between annulus wing valve and the annular space main valve is communicated with workover passageway; Produce runner B and be connected, produce the external production flow line of runner C by producing flutter valve, packoff nipple C and being arranged on the production runner C that produces in the runner module; The conversion runner is communicated with workover passageway by switching valve, packoff nipple B; Be communicated with by packoff nipple between the production runner in latus rectum in the boll-weevil hanger and the production tree and seal; Be provided with shutoff device in the latus rectum in the boll-weevil hanger.
The 5th kind of technical scheme that the utility model adopted is, a kind of ocean underwater vertical production tree, comprise Christmas tree big four joint, the inner chamber of Christmas tree big four joint is provided with boll-weevil hanger, the boll-weevil hanger seat is provided with retaining mechanism and sealing between boll-weevil hanger and the Christmas tree big four joint inwall on the step of Christmas tree big four joint inwall; Have workover passageway and annulus access B on the Christmas tree big four joint, workover passageway and annulus access B lay respectively at the upper and lower height place at boll-weevil hanger; The upper port of Christmas tree big four joint is equipped with production tree, the upper end of production tree is provided with tree cap, the production flow passage side of production tree has produces runner B, producing runner B is provided with the production main valve and produces flutter valve, on the production runner B that produces between main valve and the production flutter valve, be communicated with the conversion runner, be provided with production pumping valve and shutoff device B in the production runner above producing runner B; Be connected with production runner module in the outside of Christmas tree big four joint, produce in the runner module and be provided with annulus access, the external service line of the outlet of annulus access, the annulus access outlet is provided with annulus wing valve, the inlet of annulus access is provided with the annular space main valve, the vertical inlet workover passageway B of annulus access is respectively equipped with well workover valve and switching valve, the well workover valve, annular space main valve and switching valve more respectively with workover passageway, annulus access B and conversion runner are connected, produce runner B and be connected, produce the external production flow line of runner C by the production runner C in producing flutter valve and being arranged on production runner module; Be communicated with by packoff nipple between the production runner in latus rectum in the boll-weevil hanger and the production tree and seal; Be provided with shutoff device in the latus rectum in the boll-weevil hanger.
Above-mentioned several devices of the present utility model all can be realized the coupling with different underwater wellheads; Can utilize simultaneously common single-pass footpath drilling water-separation pipe that boll-weevil hanger is installed, and required bearing unit when the built-in suspension device is installed on the Christmas tree big four joint, do not need the exterior orientation device, greatly simplify and install; Also can simplify the workover treatment in later stage, the influidic pipe line that production tree links to each other with the outside all is connected on the Christmas tree big four joint, can not impact various influidic pipe lines when reclaiming production tree, has improved well workover efficient, reduces completion, operating cost.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Fig. 3 is the structural representation of the utility model embodiment 3;
Fig. 4 is the structural representation of the utility model embodiment 4;
Fig. 5 is the structural representation of the utility model embodiment 5.
Among the figure, 1. oil pipe, 2. big four annular space, 3. underwater wellhead, 4. Christmas tree big four joint, 5. shutoff device, 6. boll-weevil hanger, 7. seal, 8. retaining mechanism, 9. big four inner chamber, 10. packoff nipple, 11. produce main valves, and 12. produce runners, 13. production pumping valve, 14. production trees, 15. tree caps, 16. shutoff device B, 17. produce runner B, and 18. produce flutter valve, 19. conversion runner 19,20. joints, 21. jumper pipes, 22. jumper pipe B, 23. workover passageway, 24. joint B, 25. switching valve, 26. workover passageway B, 27. produce runner C, 28. the well workover valve, 29. annulus wing valves, 30. joint C, 31. annulus access, 32. produce runner module, 33. annular space main valves, 34. annulus access B, 35. packoff nipple B, 36. packoff nipple C.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As shown in Figure 1, the structure of the utility model embodiment 1 is, comprise the Christmas tree big four joint 4 that is fixed on the underwater wellhead 3, the inner chamber of Christmas tree big four joint 4 is provided with boll-weevil hanger 6,6 of boll-weevil hangers are on the step of Christmas tree big four joint 4 inwalls, be provided with retaining mechanism 8 and sealing 7 between boll-weevil hanger 6 and Christmas tree big four joint 4 inwalls, have workover passageway 23 and annulus access B34 on the Christmas tree big four joint 4, workover passageway 23 and annulus access B34 lay respectively at boll-weevil hanger about in the of 6; The top of Christmas tree big four joint 4 is equipped with production tree 14, production tree 14 upper ends are provided with tree cap 15, production runner 12 sides of production tree 14 have the production runner B17 and the conversion runner 19 of level, produce runner B17 and be provided with production flutter valve 18, be provided with production pumping valve 13 and shutoff device B16 in the production runner 12 above producing runner B17, be provided with in the production runner 12 below conversion runner 19 and produce main valve 11; Be connected with production runner module 32 in the outside of Christmas tree big four joint 4, produce in the runner module 32 and be provided with annulus access 31, the external service line of the outlet of annulus access 31, annulus access 31 is provided with annulus wing valve 29, the inlet of annulus access 31 is provided with annular space main valve 33, workover passageway is provided with well workover valve 28 and switching valve 25, well workover valve 28, annular space main valve 33 and switching valve 25 more respectively with workover passageway 23, annulus access B34 and conversion runner 19 are connected, switching valve 25 is by joint B24, jumper pipe B22, joint 20 is connected with conversion runner 19, produce flutter valve 18 by joint 20, jumper pipe 21, joint B24, be arranged on the external production flow line of outlet of producing the production runner C27 in the runner module 32, produce the outlet of runner C27 and the outlet of annulus access 31 and be arranged on joint C30 upward (also can be arranged on the different joints) simultaneously; Latus rectum in the boll-weevil hanger 6 upwards and between the production runner 12 in the production tree 14 seals by packoff nipple 10 connected sums; Be provided with shutoff device 5 in the latus rectum in the boll-weevil hanger 6, the latus rectum in the boll-weevil hanger 6 is communicated with oil pipe 1 downwards.Boll-weevil hanger be respectively up and down big four inner chamber 9 and big four annular space 2.
Produce main valve 11 and produce the control that flutter valve 18 is used to produce runner, produce runner 12 tops and also have production pumping valve 13 and shutoff device B16 two seals guarantee as production tree.During ordinary production, production pumping valve 13 and switching valve 25 are closed, shutoff device 5, produce main valve 11 and produce flutter valve 18 and open, well liquid from oil pipe 1 flow through packoff nipple 10, produce runner 12 and produce runner B17, flow into production flow line by jumper pipe B21, after producing the outlet of runner C27.
Break down as production flow line, valve (13,18,28,33) can be closed, valve (11,25,29) is opened, well liquid is flowed through from oil pipe 1 behind packoff nipple 10, production runner 12, conversion runner 19, jumper pipe B22, the workover passageway B26, outlet by annulus access 31 flows into service line, thereby utilizes service line to produce temporarily.
When completion or workover treatment, surface facilities such as offshore boring island etc. can enter big four inner chamber 9, workover passageway 23, workover passageway B26, annulus access B34 by the throttle well killing pipeline and realize and being communicated with of big four annular space 2.
As shown in Figure 2, embodiment 2 structures of the present utility model are, with the difference of embodiment 1 are, workover passageway 23 and well workover valve 28 thereof are set on Christmas tree big four joint 4, and workover passageway 23 is communicated with big four inner chamber 9 and big four annular spaces 2 by well workover valve 28.
As shown in Figure 3, the structure of embodiment 3 of the present utility model is, with the difference of embodiment 1 be to save jumper pipe B22, and in production tree 14 built-in conversion runner 19 and switching valve 25 thereof, make conversion runner 19 be communicated with big four inner chambers 9 and produce runners 12 by switching valve 25.
As shown in Figure 4, the structure of embodiment 4 of the present utility model is, with the difference of embodiment 1 be, save jumper pipe 21 and jumper pipe B22, in producing runner module 32, keep the setting of annulus wing valve 29 and annular space main valve 33, to produce runner 17, conversion runner 19 all is built in production tree 14 and the Christmas tree big four joint 4, the production runner 17 between production tree 14 and Christmas tree big four joint 4, change runner 19 joints packoff nipple C36, packoff nipple B35 be set respectively; Conversion runner 19 is communicated with by packoff nipple B35, annulus access B34 produces runner 12 and big four annular space 2, produces runner 17 and is communicated with by producing flutter valve 18, packoff nipple C36 and producing runner C27.
As shown in Figure 5, the structure of embodiment 5 of the present utility model is, compare with embodiment 1, producing runner 17 is provided with production main valve 11 and produces flutter valve 18, be communicated with conversion runner 19 on the production runner 17 between production main valve 11 and the production flutter valve 18, conversion runner 19 is communicated with successively by switching valve 25, the annulus access 31 in jumper pipe B22 and the production runner module 32.
Christmas tree big four joint 4 and production runner module 32 can be two individual components, also can be designed as an integral body.
Shutoff device 5, shutoff device B16 are wire rope plug, valve or other control device.
Sealing 7 is metallic seal, nonmetal sealing or combination sealing.
Underwater vertical production tree of the present utility model, be mainly used in the operations such as production, pressure break, well logging and water filling in marine oil gas field, can realize the coupling of production tree and different underwater well heads, simplify simultaneously and install, reduce the completion cost, also can simplify the workover treatment in later stage, improve well workover efficient, reduce the operating cost in marine oil gas field.