CN204511360U - Dual-grip efficient energy-saving casing head - Google Patents
Dual-grip efficient energy-saving casing head Download PDFInfo
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- CN204511360U CN204511360U CN201520229193.8U CN201520229193U CN204511360U CN 204511360 U CN204511360 U CN 204511360U CN 201520229193 U CN201520229193 U CN 201520229193U CN 204511360 U CN204511360 U CN 204511360U
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- casing head
- head body
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- flat gate
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Abstract
The utility model discloses a kind of dual-grip efficient energy-saving casing head, comprise base assembly, outer tube, greasing plug screw, casing head body, the first flat gate valve, connecting bolt nut, instrument flange, stop valve for pressure gauge assembly, the first slips hanger, inner sleeve, the second slips hanger, plug screw of releasing, the second flat gate valve, thread flange, plug and jackscrew assembly; Base assembly connected set tube head body, the first flat gate valve and the second flat gate valve are connected in casing head body two ends, and the first flat gate valve connects stop valve for pressure gauge assembly by instrument flange, and the second flat gate valve connects plug by thread flange; Be provided with greasing plug screw and plug screw of releasing below casing head body, the first slips hanger is sitting on the shoulder of casing head body, and the second slips hanger is sitting on outer tube, and casing head body is provided with stop jackscrew.The utility model substantially increases oil field operation efficiency, and sealing effectiveness and safety in utilization are also better than traditional screw-type casing head far away.
Description
Technical field
The utility model relates to a kind of petroleum machinery casing head, particularly relates to a kind of dual-grip efficient energy-saving casing head.
Background technology
Casing head is the base apparatus of oil gas well drilling exploitation.It is arranged on sleeve upper end, is used to the wellhead assembly parts of suspension sleeve and Sealed casing pipe annular space, is applicable to middle-deep well, be linkage between drilling process middle sleeve and preventer and for after completion with the connection of wellhead for production.
Existing screw-type casing head device generally adopts two threaded sleeve to hang or screw thread, slips convolution sleeve pipe hang.Screw-type sleeve pipe hangs to be needed to coordinate together with hanger is screwed to sleeve pipe by the use of landing joint, installation process is complicated, manpower and materials drop into more, often need during existing screw-type casing head device splicing sleeve in addition to calculate the data such as sleeve pipe length in reserve data, installation process wastes time and energy, sometimes screw thread hangs to sit and hangs the effect that also there will be poor sealing not in place, because oil field equipment is mostly made up of huge steel machinery structure, per pass drilling technology all will relate to a large amount of mechanized equipment of migration, so use existing screw-type casing head device also to slattern a large amount of energy as water resource in a large amount of manpower of input simultaneously, electric energy etc.
In sum, existing screw-type casing head device operating cost is high, efficiency is low, working service is complicated, waste energy, because better not adapting to the needs of the times.
Utility model content
The purpose of this utility model: provide a kind of dual-grip efficient energy-saving casing head, can improve operating efficiency, increase safety in utilization, cost is low.
To achieve these goals, the technical solution of the utility model is:
A kind of dual-grip efficient energy-saving casing head, comprises base assembly, outer tube, greasing plug screw, casing head body, the first flat gate valve, connecting bolt nut, instrument flange, stop valve for pressure gauge assembly, the first slips hanger, inner sleeve, the second slips hanger, plug screw of releasing, the second flat gate valve, thread flange, plug and jackscrew assembly; Described outer tube coaxial sleeve is on described inner sleeve, and described base assembly is arranged on described outer tube, and described base assembly is connected with described casing head body; The first described flat gate valve and the second flat gate valve are connected to the two ends of described casing head body respectively by end flanges, the right-hand member of the first described flat gate valve is connected with described stop valve for pressure gauge assembly by described instrument flange, described stop valve for pressure gauge assembly is connected by male thread with described instrument flange, the left end of the second described flat gate valve is connected with described plug by described thread flange, and described plug is connected by male thread with described thread flange; Circumferentially there are the greasing plug screw described in two and the plug screw of releasing described in two in the below of described casing head body, and described connecting bolt nut is arranged on described casing head body; The first described slips hanger is sitting on the shoulder of described casing head body, the second described slips hanger is sitting on described outer tube, be evenly distributed with the stop jackscrew described in eight in the upper flange circumference of described casing head body, the horizon of described stop jackscrew and the top of the first described slips hanger keep level.
Above-mentioned dual-grip efficient energy-saving casing head, wherein, described base assembly is made up of bearing rib, support ring, adjustable ring, connecting bolt and adjusting bolt, described base assembly is welded together by the bearing rib described in four and described casing head body, and four described bearing ribs are 90 ° of uniform arrangements.
Above-mentioned dual-grip efficient energy-saving casing head, wherein, the first described slips hanger is made up of slip insert, slips housing, supporting seat, rubber seal, and the first described slips hanger is tightly connected by described rubber seal and described casing head body and the annular space of inner sleeve described in being formed.
Above-mentioned dual-grip efficient energy-saving casing head, wherein, the second described slips hanger is made up of slips housing, slips, hold-down bolt.
" dual-grip " of the present utility model structure substantially increases oil field operation efficiency, and sealing effectiveness and safety in utilization are also better than traditional screw-type casing head far away.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of the utility model dual-grip efficient energy-saving casing head.
Detailed description of the invention
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
Refer to shown in accompanying drawing 1, a kind of dual-grip efficient energy-saving casing head, comprises base assembly 1, outer tube 2, greasing plug screw 3, casing head body 4, first flat gate valve 5, connecting bolt nut 6, instrument flange 7, stop valve for pressure gauge assembly 8, first slips hanger 9, inner sleeve 11, second slips hanger 12, release plug screw 13, second flat gate valve 14, thread flange 15, plug 16 and jackscrew assembly 17, described outer tube 2 coaxial sleeve is on described inner sleeve 11, and described base assembly 1 is arranged on described outer tube 2, and described base assembly 1 is connected with described casing head body 4, the first described flat gate valve 5 and the second flat gate valve 14 are connected to the two ends of described casing head body 4 respectively by end flanges, the right-hand member of the first described flat gate valve 5 is connected with described stop valve for pressure gauge assembly 8 by described instrument flange 7, described stop valve for pressure gauge assembly 8 is connected by male thread with described instrument flange 7, the left end of the second described flat gate valve 14 is connected with described plug 16 by described thread flange 15, and described plug 16 is connected by male thread with described thread flange 15, circumferentially there are the greasing plug screw 3 described in two and the plug screw 13 of releasing described in two in the below of described casing head body 4, the effect of greasing plug screw 3 and plug screw 13 of releasing is by inject and stop-leak compound of releasing regulates BT to enclose the annular space of better hermetically sealed case pipe 2, described connecting bolt nut 6 is arranged on described casing head body 4, connecting bolt nut 6 effect makes the utility model and other wellhead assemblies aboveground, preventer is connected, the design of connecting bolt nut 6 performs according to GB/T22513-2008 " industrial gas oil drilling well and oil production equipment wellhead assembly and production tree " standard, there is good interchangeability, the first described slips hanger 9 is sitting on the shoulder of described casing head body 4, the second described slips hanger 12 is sitting on described outer tube 2, the stop jackscrew 17 described in eight is evenly distributed with in the upper flange circumference of described casing head body 4, the horizon of described stop jackscrew 17 and the top of the first described slips hanger 9 keep level, and the effect of stop jackscrew 17 prevents the first slips hanger 9 from moving up.
Solid 10 3/4, " during outer tube 2, rotation hand wheel opens the second flat gate valve 14, unloads the plug 16 be arranged on plug flange 15, connects well cementation pipeline, discharges the mud that well cementing operation process shaft bottom is returned out.The operational pressure of down-hole when the effect of the first flat gate valve 5 is observation well cementing operations, when well cementing operation is carried out, rotation hand wheel opens the first flat gate valve 5, open stop valve for pressure gauge assembly 8, the change of subsurface environment pressure is monitored in real time, the shut-in well pressure release once down-hole pressure sudden change stops operation at once by observing pressure gauge reading.Thread flange 15 and instrument flange 7 are all conversion connection functions, are bolted and are connected with the second flat gate valve 14, first flat gate valve 5.Plug 16 is connected with corresponding thread flange 15, instrument flange 7 by male thread with pressure meter assembly 8.After well cementing operation terminates, rotation hand wheel closes the second flat gate valve 14, first flat gate valve 5.
Described base assembly 1 is made up of bearing rib, support ring, adjustable ring, connecting bolt and adjusting bolt, described base assembly 1 is welded together by the bearing rib described in four and described casing head body 4, and four described bearing ribs are 90 ° of uniform arrangements.Can the height of adjusting base assembly 1 by adjusting bolt, casing head body 4 device can be made when such mounting sleeve 2 better to adapt to complicated subsurface environment and adjust height flexibly, using simple operation.
The first described slips hanger 9 is made up of slip insert, slips housing, supporting seat, rubber seal, and the first described slips hanger 9 is tightly connected by described rubber seal and described casing head body 4 and the annular space of inner sleeve 11 described in being formed.
The second described slips hanger 12 is made up of slips housing, slips, hold-down bolt.
The specification of sleeve pipe 2 is 10 3/4 ", the specification of the first flat gate valve 5, second flat gate valve 14 is PFF65-70, and the model of the first slips hanger 9 is 5 1/2, and " W type, the model of the second slips hanger 12 is 10 3/4 " WD types.
Only casing head vertically need be seated in 10 3/4 " above outer tube 2 during 10 3/4 " WD type second slips hanger 12 is in connection 10 3/4 " outer tube 2 of the utility model bottom, then by screwing the effect of 103/4 " 8 hold-down bolts above WD type second slips hanger 12 compress dovetail slip housing distortion thus reach and hold 10 3/4 tightly " sleeve pipe, it is very convenient to operate, and injecting stop-leak compound by greasing plug screw 3 in annular BT sealing ring forces BT to enclose the expansion " effect of outer tube 2 that reaches sealing 10 3/4, and screw-type suspension can only lean on screw thread to realize sealing, its sealing effectiveness is well below BT circle of the present utility model sealing.
The utility model connects suspension 5 1/2, and " what the hanger of inner sleeve 11 adopted is also the structure of slip-type, " the first slips hanger 9 of W type unlike have employed 5 1/2, this kind of W type first slips hanger 9 structure design is very ingenious, " do not need during inner sleeve 11 to use landing joint rotating suspension device in connection 5 1/2, as long as 5 1/2 " W type first slips hanger 9 is sleeved on 5 1/2 " inner sleeve 11 annular peripheral, 5 1/2 " W type first slips hanger 9 carries rubber seal, " inner sleeve 11 downward deadweight weight excite " slip insert " be out of shape thus hold 5 1/2 tightly " inner sleeve 11 by 5 1/2, " the downward deadweight weight of inner sleeve 11 excites black box to expand and realizes sealing 5 1/2 " inner sleeve 11 by 5 1/2.
In sum, " dual-grip " of the present utility model structure substantially increases oil field operation efficiency, and sealing effectiveness and safety in utilization are also better than traditional screw-type casing head far away.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing the utility model description to do; or directly or indirectly use the technical field being attached to other Related products, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. a dual-grip efficient energy-saving casing head, is characterized in that: comprise base assembly, outer tube, greasing plug screw, casing head body, the first flat gate valve, connecting bolt nut, instrument flange, stop valve for pressure gauge assembly, the first slips hanger, inner sleeve, the second slips hanger, plug screw of releasing, the second flat gate valve, thread flange, plug and jackscrew assembly; Described outer tube coaxial sleeve is on described inner sleeve, and described base assembly is arranged on described outer tube, and described base assembly is connected with described casing head body; The first described flat gate valve and the second flat gate valve are connected to the two ends of described casing head body respectively by end flanges, the right-hand member of the first described flat gate valve is connected with described stop valve for pressure gauge assembly by described instrument flange, described stop valve for pressure gauge assembly is connected by male thread with described instrument flange, the left end of the second described flat gate valve is connected with described plug by described thread flange, and described plug is connected by male thread with described thread flange; Circumferentially there are the greasing plug screw described in two and the plug screw of releasing described in two in the below of described casing head body, and described connecting bolt nut is arranged on described casing head body; The first described slips hanger is sitting on the shoulder of described casing head body, the second described slips hanger is sitting on described outer tube, be evenly distributed with the stop jackscrew described in eight in the upper flange circumference of described casing head body, the horizon of described stop jackscrew and the top of the first described slips hanger keep level.
2. dual-grip efficient energy-saving casing head according to claim 1, it is characterized in that: described base assembly is made up of bearing rib, support ring, adjustable ring, connecting bolt and adjusting bolt, described base assembly is welded together by the bearing rib described in four and described casing head body, and four described bearing ribs are 90 ° of uniform arrangements.
3. dual-grip efficient energy-saving casing head according to claim 1, it is characterized in that: the first described slips hanger is made up of slip insert, slips housing, supporting seat, rubber seal, the first described slips hanger is tightly connected by described rubber seal and described casing head body and the annular space of inner sleeve described in being formed.
4. dual-grip efficient energy-saving casing head according to claim 1, is characterized in that: the second described slips hanger is made up of slips housing, slips, hold-down bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229193.8U CN204511360U (en) | 2015-04-10 | 2015-04-10 | Dual-grip efficient energy-saving casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229193.8U CN204511360U (en) | 2015-04-10 | 2015-04-10 | Dual-grip efficient energy-saving casing head |
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| Publication Number | Publication Date |
|---|---|
| CN204511360U true CN204511360U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520229193.8U Active CN204511360U (en) | 2015-04-10 | 2015-04-10 | Dual-grip efficient energy-saving casing head |
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| CN (1) | CN204511360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386154A (en) * | 2017-12-11 | 2018-08-10 | 中国石油集团渤海钻探工程有限公司 | Completion becomes encapsulation tube head |
-
2015
- 2015-04-10 CN CN201520229193.8U patent/CN204511360U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386154A (en) * | 2017-12-11 | 2018-08-10 | 中国石油集团渤海钻探工程有限公司 | Completion becomes encapsulation tube head |
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