CN204175274U - A kind of tree protector of oil-gas field development - Google Patents
A kind of tree protector of oil-gas field development Download PDFInfo
- Publication number
- CN204175274U CN204175274U CN201420627276.8U CN201420627276U CN204175274U CN 204175274 U CN204175274 U CN 204175274U CN 201420627276 U CN201420627276 U CN 201420627276U CN 204175274 U CN204175274 U CN 204175274U
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- central tube
- oil
- gas field
- tree
- field development
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- Expired - Lifetime
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- 230000001012 protector Effects 0.000 title claims abstract description 28
- 238000011161 development Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 40
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims abstract description 14
- 230000037361 pathway Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims description 21
- 244000309464 bull Species 0.000 claims description 5
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of tree protector of oil-gas field development, solve fracturing work and there is potential safety hazard and the high problem of cost owing to have employed fracturing fluid and entering the mode in well by production tree.The utility model comprises central tube, be enclosed within this central tube portion of external and top is provided with the piston rod cover of the radial direction through hole alignd with pressure break mouth, be arranged on the power set on central tube, overlap with piston rod and be connected and be communicated with the feed pathway of central tube, be arranged on the glue tube base seal apparatus of central tube lower end, and the solution sealing mechanism be communicated with radial direction through hole; Described central tube is connected with production tree top by the adpting flange arranged in the middle.The utility model is rational in infrastructure, easy to use, and it can make fracturing fluid directly do not entered in well by production tree, thus not only eliminates potential safety hazard, and reduces operating cost.
Description
Technical field
The utility model relates to a kind of protector, and what be specifically related to is a kind of tree protector of oil-gas field development.
Background technology
At present, in fracturing work process, when frac pressure is no more than well head design pressure, common way is paraffin valve top pressure break mouth being directly connected on wellhead tree tree, gets in well to enable fracturing fluid by production tree; But, if frac pressure exceedes the design pressure of production tree, so adopt this kind of connected mode that fracturing work can be made to there is very large potential safety hazard.
So, even if test data shows that formation oil, atmospheric pressure are not high, but consider the needs of fracturing work in the future, other production tree of pressure level also can be installed.But large area uses the production tree of high pressure grade to cause high expensive, this is not economic way.
Therefore, how can eliminate safe hidden trouble in fracturing work process, the cost of fracturing work can be reduced again, just become one of content of those skilled in the art's primary study.
Utility model content
The purpose of this utility model is the tree protector providing a kind of oil-gas field development, solves fracturing work and there is potential safety hazard and the high problem of cost owing to have employed fracturing fluid and entering the mode in well by production tree.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of tree protector of oil-gas field development, comprise central tube, be enclosed within this central tube portion of external, and top is provided with the piston rod cover of the radial direction through hole alignd with pressure break mouth, be arranged on central tube, the power set moved up and down for driving central tube, with piston rod overlap be connected and be communicated with central tube for passing into of the fracturing fluid feed pathway, be arranged on central tube lower end, for make central tube power set drive under with the glue tube base seal apparatus be communicated with in well, and be communicated with radial direction through hole, for make central tube power set drive under with the solution sealing mechanism be separated in well, described central tube is connected with production tree top by the adpting flange arranged in the middle.
Specifically, described power set comprise be connected with central tube by bull stick, hydraulic motor for driving central tube to rotate, be enclosed within central tube outside, for exporting the oil cylinder of energy to hydraulic motor, and be arranged on the position sensor of this oil cylinder upper and lower side.
Further, described bull stick is also provided with the rotary encoder for detecting the hydraulic motor anglec of rotation.
Specifically, described glue tube base seal apparatus comprises the packing element assembly being enclosed within outside, central tube lower end, the spring torque cover be connected with this packing element assembly lower end, and is arranged on the Anti-slip cover below this spring torque cover, for preventing spring torque cover from deviating from; Described central tube is connected with spring torque external threading.
Specifically, described solution sealing mechanism comprises the tube connector be connected with radial direction through hole and adpting flange respectively, be arranged on the stop valve in this tube connector, being arranged on this stop valve side, connecting the first pressure sensor of overpressure for measuring, and be arranged on stop valve opposite side, for measuring the second pressure sensor of production tree pressure.
Again further, described piston rod cover is provided with axial seal with the junction of feed pathway.
Conveniently transport, the utility model also comprises and overlaps with central tube and piston rod the pallet be connected respectively by clip.
Compared with prior art, the utility model has following beneficial effect:
(1) the utility model is by rational structure design, after connection production tree, by hydraulic motor and spring torque cover, the cooperation of packing element assembly, in the mode of realizing active sealing, well fracturing fluid and production tree are separated completely, and for bearing frac pressure, thus fracturing fluid directly can be entered in well by central tube, and without the need to passing through production tree, not only ensure production tree like this not corroded by fracturing fluid, thus while eliminating safe hidden trouble, reduce the cost of fracturing work well, and the utility model can also squeeze into back pressure to improve the bearing capacity of packing element assembly in production tree.
(2) the utility model is provided with rotary encoder, direction and the angle of hydraulic motor rotation can be recorded, only a display screen need be set, just operating personnel can be made to recognize degree (the i.e. number of turns of hydraulic motor rotation that the utility model is setting intuitively, the namely decrement of packing element group) whether enough, inner diameter through-hole whether to align pressure break mouth, thus achieve handling central tube, rotate the full hydraulic control visualized operation of the entire exercises such as setting, deblocking.
(3) the utility model is also provided with position sensor, the first pressure sensor and the second pressure sensor respectively, when piston rod cover moves to reach Upper-lower Limit position, responded to by position sensor, operating personnel just can be made intuitively to recognize, and whether central tube has moved to the position of specifying; Pressure sensor then can real-time monitor the frac pressure in the pressure of production tree and tube connector, thus, just can guarantee package unit safety operationally further.
(4) junction that the utility model overlaps in feed pathway and piston rod is provided with axial seal, can carry out the interface pressure testing before pressure break safely, easily.
(5) the utility model is also provided with pallet, not only facilitates the transport of protector, and can prevent from causing in transit protector damaged due to road bumps.
(6) the utility model cost performance is high, practical, structure is firmly firm, and it is with a wide range of applications in oil-gas field development, is therefore suitable for applying.
Accompanying drawing explanation
Fig. 1 is the structural representation of production tree.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the connection diagram that feed pathway and piston rod overlap.
Fig. 4 is the structural representation of glue tube base seal apparatus.
Fig. 5 is the structural representation that the utility model is provided with pallet.
Wherein, the component name that Reference numeral is corresponding is called:
1-production tree main body, 2-paraffin valve, 3-main valve, 4-radial direction through hole, 5-rotary encoder, 6-hydraulic motor, 7-piston rod cover, 8-feed pathway, 9-position sensor, 10-tube connector, 11-oil cylinder, 12-first pressure sensor, 13-stop valve, 14-second pressure sensor, 15-adpting flange, 16-central tube, 17-glue tube base seal apparatus, 18-packing element assembly, 19-spring torque cover, 20-Anti-slip cover, 21-axial seal, 22-pallet.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
Before introducing the utility model, first introduce the production tree used by current oil-gas field development aspect.As shown in Figure 1, production tree is primarily of production tree main body 1, and paraffin valve 2 disposed thereon and main valve 3 are formed, and it is used as control head when recovering the oil.And effect of the present utility model is exactly fracturing fluid and wellhead tree to be set to separate, be used for bearing frac pressure, fracturing fluid directly entered in well by the utility model, and does not pass through production tree.As shown in figs. 2 to 4, the utility model comprises central tube 16, piston rod cover 7, feed pathway 8, power set, glue tube base seal apparatus and separates sealing mechanism, and the utility model is connected with production tree main body 1 top by adpting flange 15.Described central tube 16 is for being communicated with in well, described piston rod cover 7 is enclosed within central tube 16 portion of external, and described feed pathway 8 and piston rod overlap 7 and be connected, and is communicated with central tube 16, meanwhile, the junction that this feed pathway 8 and piston rod overlap 7 is provided with axial seal 21.Described feed pathway 8 is for passing into fracturing fluid, so that fracturing fluid enters in well via central tube 16.
After described power set are connected with production tree for the protection of device; control centre's pipe 16 moves up and down, and is then conciliating under the cooperation of sealing mechanism with glue tube base seal apparatus, is realizing the setting of protector and deblocking; thus fracturing fluid and production tree are separated completely, and for bearing frac pressure.Specifically, these power set comprise be connected with central tube 16 by bull stick, hydraulic motor 6 for driving central tube to rotate, be enclosed within central tube 16 outside, for the oil cylinder 11 to hydraulic motor outputting power, and be arranged on the position sensor 9 of this oil cylinder 11 upper and lower side.
Described glue tube base seal apparatus 17 is for realizing the setting of protector, as shown in Figure 4, it comprises the packing element assembly 18 being enclosed within outside, central tube 16 lower end, the spring torque be connected with this packing element assembly 18 lower end overlaps 19, and is arranged on the Anti-slip cover 20 below this spring torque cover 19, for preventing spring torque cover from deviating from; Described central tube 16 and spring torque overlap 19 and are threaded.
Described solution sealing mechanism, then for realizing the deblocking of protector, makes protector can disassemble from production tree.Specifically, this solution sealing mechanism comprises the tube connector 10 be connected with radial direction through hole and adpting flange respectively, be arranged on the stop valve 13 in this tube connector 10, being arranged on this stop valve 13 side, connecting the first pressure sensor 12 of overpressure for measuring, and be arranged on stop valve 13 opposite side, for measuring the second pressure sensor 14 of production tree pressure.
In addition; as shown in Figure 5; conveniently transport protector; and prevent in the process of transport; cause protector damaged due to road bumps, the utility model have also been devised pallet 22, and it overlaps 7 with central tube 16 and piston rod respectively by clip and is connected; the present embodiment have employed five clips and is fixed by pallet 22, and the position distribution of clip is on central tube 16 and piston rod cover 7.In addition, in order to prevent breaking holding wire in transit and when lifting, protector have also been devised holding wire pillar, can not only provide effectively protect holding wire, and makes protector overall appearance beautiful and clean.
Operating principle of the present utility model is as follows:
Before fracturing work starts, close the main valve 3 of production tree, and Flange joint is passed through on production tree main body 1 top and the utility model, make central tube 16 lower end and glue tube base seal apparatus extend into production tree interior lower end.Pressure testing before the pressure of pressure break pipeline and interface can be carried out after connecting, and after pressure testing, the main valve 3 of production tree is opened.
Then, manipulation oil cylinder 11, makes hydraulic motor 6 rotate clockwise, and hydraulic motor 6 drives central tube 16 to rotate by piston rod cover 7, and axially moves down.Also packing element assembly 18 and spring torque cover 19 has been driven to rotate and move while central tube 16 movement.When piston rod cover 7 arrives the lower limit position of oil cylinder 11, the position sensor being positioned at oil cylinder 11 lower end just can sense and carry out pointing out (mode can glimmered by alarm lamp is pointed out), now namely represents that glue tube base seal apparatus has arrived the double male joint place of well head.
When glue tube base seal apparatus arrives double male joint place, the spring leaf on spring torque cover 19 can tightly support on the inwall of double male joint, thus provides a reaction torque stoping torque sleeve to rotate.Be threaded because central tube 16 and spring torque overlap 19 again, and have the spacing of Anti-slip cover 20, thus spring torque cover now 19 just can move up vertically under the effect of screw thread pair, is compressed by packing element assembly 18, forces it that lateral deformation occurs.When the axial compression amount of packing element assembly 18 acquires a certain degree, the external surface of packing element assembly 18 just can be close to the inwall of double male joint and realize initially setting, and radial direction through hole 4 now also just in time aligns with pressure break mouth.
Initially setting complete after, then squeeze into certain clear water as equilibrium pressure by the branch road of production tree from setting upstream, this equilibrium pressure is less than rated operating pressure and the frac pressure of production tree.The object squeezing into clear water is the upstream and downstream pressure reduction reducing packing element assembly, thus improves the setting effect of packing element assembly, thus, just completes setting to production tree of protector.In setting process, the frac pressure in the equilibrium pressure of production tree and tube connector 10 can be monitored by the first pressure sensor 12 and the second pressure sensor 14 in real time, makes operating personnel recognize setting effect at any time.
Setting complete after, just start to carry out fracturing work.Because setting position is at double male joint place, thus during pressure break, fracturing fluid just after entering feed pathway 8, directly can enter in well, without production tree via central tube 16.Thus, the pressure produced due to fracturing fluid and pressure break and wellhead tree are set and are separated completely, therefore adopt this kind of mode to pass into fracturing fluid and also protect production tree well.
After fracturing work terminates, because shaft bottom has remaining frac pressure usually, thus need to utilize solution sealing mechanism to carry out deblocking to protector, it can be made to dismantle smoothly.The specific practice of deblocking is: open stop valve 13, and tube connector is communicated with up and down, and the upstream and downstream pressure realizing packing element assembly 18 is identical; Then, manipulation oil cylinder 11, makes hydraulic motor 6 rotate counterclockwise, torque sleeve is moved down vertically, discharge by the packing element assembly 18 compressed.After packing element assembly 18 decompress(ion), due to the elasticity of self, it can spring back to setting front state and realize deblocking.
Solution is honored as a queen, continue manipulation oil cylinder 10, make piston rod overlap 7 to move up, central tube 16 can be moved up vertically, until when piston rod cover 7 arrives position sensor 9 place of oil cylinder 10 upper end, by this sensor sensing to and carry out pointing out (mode can glimmered by alarm lamp is pointed out), now namely represent that glue tube base seal apparatus departs from double male joint.Finally, close main valve 2, and adpting flange 15 is dismantled, and then just can smoothly protector be pulled down from production tree.
The utility model is reasonable in design, applied widely; its packing element assembly can be dismantled arbitrarily; thus different well heads is gone for; it is when different pipe apertures; only need to change the parts such as the packing element of lower half and central tube; without the need to using a whole set of brand-new tree protector instead, thus using and changing very convenient.
Above-described embodiment is only preferred embodiment of the present utility model; it is not the restriction to the utility model protection domain; in every case design principle of the present utility model being adopted, and the change carried out non-creativeness work on this basis and make, all should belong within protection domain of the present utility model.
Claims (7)
1. the tree protector of an oil-gas field development, it is characterized in that: comprise central tube (16), be enclosed within this central tube (16) portion of external, and top is provided with the piston rod cover (7) of the radial direction through hole (4) alignd with pressure break mouth, be arranged on central tube (16), for the power set driving central tube (16) to move up and down, be connected with piston rod cover (7) and be communicated with central tube (16) for passing into of the fracturing fluid feed pathway (8), be arranged on central tube (16) lower end, for make central tube power set drive under with the glue tube base seal apparatus (17) be communicated with in well, and be communicated with radial direction through hole, for make central tube power set drive under with the solution sealing mechanism be separated in well, described central tube (16) is connected with production tree top by the adpting flange (15) arranged in the middle.
2. the tree protector of a kind of oil-gas field development according to claim 1; it is characterized in that: described power set comprise be connected with central tube (16) by bull stick, hydraulic motor (6) for driving central tube to rotate; be enclosed within central tube (16) outside, for exporting the oil cylinder (11) of energy to hydraulic motor, and be arranged on the position sensor (9) of this oil cylinder (11) upper and lower side.
3. the tree protector of a kind of oil-gas field development according to claim 2, is characterized in that: described bull stick is also provided with the rotary encoder (5) for detecting the hydraulic motor anglec of rotation.
4. the tree protector of a kind of oil-gas field development according to Claims 2 or 3, it is characterized in that: described glue tube base seal apparatus (17) comprises the packing element assembly (18) being enclosed within central tube (16) outside, lower end, the spring torque cover (19) be connected with this packing element assembly (18) lower end, and be arranged on the Anti-slip cover (20) below this spring torque cover (19), for preventing spring torque cover from deviating from; Described central tube (16) is threaded with spring torque cover (19).
5. the tree protector of a kind of oil-gas field development according to claim 4; it is characterized in that: described solution sealing mechanism comprises the tube connector (10) be connected with radial direction through hole and adpting flange respectively; be arranged on the stop valve (13) in this tube connector (10); being arranged on this stop valve (13) side, connecting first pressure sensor (12) of overpressure for measuring, and be arranged on stop valve (13) opposite side, for measuring second pressure sensor (14) of production tree pressure.
6. the tree protector of a kind of oil-gas field development according to claim 5, is characterized in that: described piston rod cover (7) is provided with axial seal (21) with the junction of feed pathway (8).
7. the tree protector of a kind of oil-gas field development according to claim 6, is characterized in that: also comprise the pallet (22) be connected with central tube (16) and piston rod cover (7) respectively by clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420627276.8U CN204175274U (en) | 2014-10-28 | 2014-10-28 | A kind of tree protector of oil-gas field development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420627276.8U CN204175274U (en) | 2014-10-28 | 2014-10-28 | A kind of tree protector of oil-gas field development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175274U true CN204175274U (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420627276.8U Expired - Lifetime CN204175274U (en) | 2014-10-28 | 2014-10-28 | A kind of tree protector of oil-gas field development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401904A (en) * | 2015-12-28 | 2016-03-16 | 西安石油大学 | Input reversing-out type wellhead protector |
| CN107939331A (en) * | 2017-12-17 | 2018-04-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of wellhead of water injection well protective device |
-
2014
- 2014-10-28 CN CN201420627276.8U patent/CN204175274U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401904A (en) * | 2015-12-28 | 2016-03-16 | 西安石油大学 | Input reversing-out type wellhead protector |
| CN105401904B (en) * | 2015-12-28 | 2018-02-13 | 西安石油大学 | One kind, which can be put into, returns out formula tree protector |
| CN107939331A (en) * | 2017-12-17 | 2018-04-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of wellhead of water injection well protective device |
| CN107939331B (en) * | 2017-12-17 | 2023-08-18 | 中国石油天然气集团有限公司 | Wellhead protection device for water injection well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 618300 Guanghan, Sichuan, China Town, small town, Fenghuang Village, the association of the three Patentee after: SICHUAN WEWODON CHEMICAL CO.,LTD. Address before: 618300 Guanghan, Sichuan, China Town, small town, Fenghuang Village, the association of the three Patentee before: SICHUAN WELDON CHEMICALS CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 618000 Community 3, Fenghuang Village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan Weiwodun Petroleum Technology Co.,Ltd. Address before: 618300 group 3, Fenghuang village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee before: SICHUAN WEWODON CHEMICAL CO.,LTD. |
|
| CP03 | Change of name, title or address |