CN114809974A - Wellhead Christmas tree device for multi-tube corrosion prevention - Google Patents
Wellhead Christmas tree device for multi-tube corrosion prevention Download PDFInfo
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- CN114809974A CN114809974A CN202210578849.1A CN202210578849A CN114809974A CN 114809974 A CN114809974 A CN 114809974A CN 202210578849 A CN202210578849 A CN 202210578849A CN 114809974 A CN114809974 A CN 114809974A
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- 241000191291 Abies alba Species 0.000 title claims abstract description 18
- 238000005536 corrosion prevention Methods 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 107
- 238000005260 corrosion Methods 0.000 claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 61
- 238000000034 method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- -1 and meanwhile Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Pipeline Systems (AREA)
Abstract
The invention relates to the technical field of oil and gas well mouths, in particular to a well mouth Christmas tree device for multi-pipe corrosion prevention, which comprises an inner oil pipe and an outer oil pipe, wherein the surface of the outer oil pipe is provided with a plurality of stop valves, one side of each stop valve is provided with a sealing mechanism, oil is introduced into a sealing frame, and a port at the joint of a guide pipe and a connecting pipe is in an oil sealing state of the oil, so that the problem that the port of the guide pipe and the port of the connecting pipe are reduced in sealing property due to corrosion is solved, meanwhile, the connection sealing property between the guide pipe and the connecting pipe is monitored, after the connection sealing property between the guide pipe and the connecting pipe is damaged, the guide pipe and the sealing frame are mutually communicated, if the fluid pressure in the guide pipe is high, the oil pressure in the sealing frame is increased, otherwise, the oil pressure in the sealing frame is reduced, and the oil pressure state in the sealing frame is monitored in real time by a pressure gauge, and alarming the sealing leakage between the conduit and the connecting pipe in time.
Description
Technical Field
The invention relates to the technical field of oil and gas well heads, in particular to a multi-pipe anti-corrosion well head Christmas tree device.
Background
The tree is an assembly located at the opening to the top end of the well, including valves for measurement and maintenance, safety systems and a series of monitoring instruments, which connects the production tubing and production lines from downhole, while acting as an important barrier to the outside environment at the top end of the well, including a number of valves that can be used to regulate or prevent the production of crude oil vapors, natural gas and liquids from escaping the well;
at present, in structural design of a Christmas tree applied to wellhead oil extraction, a flange is usually adopted to fixedly connect the joint of a guide pipe and a connecting pipe on the Christmas tree, but fluid is continuously communicated inside the joint of the guide pipe and the connecting pipe when the Christmas tree works, and the joint of the guide pipe and the connecting pipe is exposed in a humid environment, so that the joint of the guide pipe and the connecting pipe is easily corroded, the connection tightness between the guide pipe and the connecting pipe is reduced due to corrosion, and further the fluid inside the guide pipe and the connecting pipe is leaked to influence the normal working operation of the Christmas tree;
in view of the above technical drawbacks, a solution is proposed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a multi-tube anti-corrosion wellhead Christmas tree device, which solves the problems that the conventional wellhead Christmas tree lacks anti-corrosion protection on the joint of a guide tube and a connecting tube, so that the joint of the guide tube and the connecting tube is easy to corrode, the sealing property of the joint is reduced, and the normal working operation of the Christmas tree is influenced.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a wellhead Christmas tree device for multi-pipe corrosion prevention comprises an inner oil pipe and an outer oil pipe, wherein the inner oil pipe is arranged inside the outer oil pipe, a plurality of stop valves are arranged on the surface of the outer oil pipe, the stop valves above the outer oil pipe are connected with one another through four-way joints, guide pipes are arranged inside the stop valves, and sealing mechanisms are arranged on one sides of the stop valves;
the sealing mechanism comprises a connecting frame, one side of the connecting frame is fixedly connected with one side of the stop valve, a sealing frame is arranged in the connecting frame, a pressure gauge is arranged at the top of the connecting frame, the bottom end of the pressure gauge extends into the sealing frame, pressure sensors are arranged on two sides of the sealing frame, one end of a guide pipe extends into the connecting frame, one end of the guide pipe, which is positioned in the connecting frame, penetrates through the sealing frame and extends into the sealing frame, a connecting pipe is arranged on the right side of the connecting frame, one end of the connecting pipe extends into the sealing frame, a connecting assembly is arranged in the sealing frame, one ends of the guide pipe and the connecting pipe are connected with the connecting assembly, first oil inlets are arranged on two sides of the bottom of the connecting frame, one ends of the two first oil inlets extend into the connecting frame, and a second oil inlet is arranged at the bottom of the sealing frame, and the bottom end of the second oil inlet nozzle extends to the outside of the connecting frame.
Preferably, coupling assembling includes the link, and the inner wall fixed connection of global and sealed frame of link, the spread groove has all been seted up to the both sides of link, and has seted up the through-hole between two spread grooves, the one end of pipe and connecting pipe extends to the inside of two spread grooves respectively, and the one end of pipe and connecting pipe all is provided with first sealing washer, the one end of connecting pipe is provided with the sealed tube, and the one end of sealed tube is provided with the body.
Preferably, two limiting grooves are symmetrically formed in the surfaces of the guide pipe and the connecting pipe, and limiting columns are movably arranged in the two limiting grooves.
Preferably, the inside of link slides and is provided with the fly leaf, and the top of fly leaf and the bottom fixed connection of spacing post, the bottom of fly leaf is provided with the spring, and one end of spring and one side fixed connection of link inner wall, the inside of link just is located the below of fly leaf and is provided with the electro-magnet, and the bottom of fly leaf is provided with the metal and inhales the piece.
Preferably, the outer thread has all been seted up with one side on connecting pipe surface to the pipe, and one side of two spread groove inner walls all is provided with the internal thread with outer thread matched with.
Preferably, a sealing groove matched with the sealing pipe is formed in one end of the guide pipe, and a second sealing ring is arranged on one side of the inner wall of the sealing groove.
Preferably, the top and the bottom of link have all been seted up and have been led to the groove, and two inside that lead to the groove communicate with the inside of manometer and second oil feed mouth respectively.
Preferably, the surface of the connecting pipe is in sealing connection with one side of the connecting frame through a connecting flange, a connecting threaded hole is formed in the left side of the connecting frame, and a positioning threaded hole is formed in one side of the connecting threaded hole.
(III) advantageous effects
The invention provides a wellhead Christmas tree device for multi-tube corrosion prevention, which has the following beneficial effects compared with the prior art:
through setting up sealed frame and connection frame in the junction of pipe and connecting pipe, utilize to let in fluid in the inside of sealed frame, let the junction port of pipe and connecting pipe be in under the oil blanket state of fluid, adopt fluid to carry out the oil blanket to pipe and connecting pipe port and not only solved the problem that pipe and connecting pipe port reduced the leakproofness because of corroding, play the monitoring action to the connection leakproofness between pipe and the connecting pipe simultaneously, suffer destruction back at the connection leakproofness between pipe and connecting pipe, the inside of pipe and the inside of sealed frame communicate each other, if the inside fluid pressure of pipe is big, then also can cause the inside oil pressure increase of sealed frame, otherwise then cause the inside oil pressure reduction of sealed frame, carry out real-time supervision through the manometer to the oil pressure state in the sealed frame, in time reveal alarm processing to the sealed between pipe and the connecting pipe. Through setting up the link in the inside of sealing frame to utilize the spacing post cooperation that sets up in the link to set up the spacing groove on pipe and connecting pipe surface, realize the high-speed joint of pipe and connecting pipe in sealing frame, the design of cooperation first sealing washer and second sealing washer guarantees the connection leakproofness between pipe and the connecting pipe. All set up fluid through the both sides inside the carriage, carry out the oil blanket to the surface of pipe and connecting pipe and handle, further improve the anticorrosive effect of pipe and connecting pipe at the junction, when sealed revealing appears in connecting pipe and pipe connection department simultaneously, utilize mutually supporting between sealed frame and the carriage, reduce the junction and reveal the waste that leads to the resource, further improve the connection security between pipe and the connecting pipe, guarantee well head production tree's safety in utilization.
Drawings
FIG. 1 is a schematic diagram of a configuration of a wellhead Christmas tree device for multi-tubular corrosion protection according to the present invention;
FIG. 2 is a cross-sectional view of the seal mechanism configuration of the present invention;
FIG. 3 is a cross-sectional view of the connecting frame and sealing frame structure of the present invention;
FIG. 4 is a schematic view of a connector structure of the present invention;
FIG. 5 is a schematic view of the catheter structure of the present invention;
FIG. 6 is an enlarged view of the structure of FIG. 3A in accordance with the present invention;
FIG. 7 is a schematic view of the structure of the connecting frame of the present invention.
In the figure: 10. an inner layer oil pipe; 20. an outer oil pipe; 30. a stop valve; 40. a conduit; 50. a connecting flange; 60. connecting the threaded hole; 70. positioning the threaded hole; 80. a third seal ring; 101. a connecting frame; 102. a sealing frame; 103. a pressure gauge; 104. a connecting pipe; 105. a first oil inlet nozzle; 106. a second oil inlet nozzle; 201. a connecting frame; 202. connecting grooves; 203. a first seal ring; 204. a sealing tube; 205. a pipe body; 206. a limiting groove; 207. a limiting column; 208. a movable plate; 209. a spring; 210. an electromagnet; 211. an external thread; 212. an internal thread; 213. a sealing groove; 214. a second seal ring; 215. a through groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-7, a wellhead christmas tree device for multi-pipe corrosion prevention comprises an inner oil pipe 10 and an outer oil pipe 20, wherein the inner oil pipe 10 is arranged inside the outer oil pipe 20, a plurality of stop valves 30 are arranged on the surface of the outer oil pipe 20, the stop valves 30 above the outer oil pipe 20 are connected with each other through a four-way joint, a guide pipe 40 is arranged inside each stop valve 30, and a sealing mechanism is arranged on one side of each stop valve 30;
the sealing mechanism comprises a connecting frame 101, one side of the connecting frame 101 is fixedly connected with one side of the stop valve 30, a sealing frame 102 is arranged inside the connecting frame 101, a pressure gauge 103 is arranged at the top of the connecting frame 101, the bottom end of the pressure gauge 103 extends into the sealing frame 102, pressure sensors are arranged on two sides of the sealing frame 102, one end of a guide pipe 40 extends into the connecting frame 101, one end of the guide pipe 40, which is positioned inside the connecting frame 101, penetrates through the sealing frame 102 and extends into the sealing frame 102, a connecting pipe 104 is arranged on the right side of the connecting frame 101, one end of the connecting pipe 104 extends into the sealing frame 102, a connecting assembly is arranged inside the sealing frame 102, one ends of the guide pipe 40 and the connecting pipe 104 are connected with the inside of the connecting assembly, first oil inlets 105 are arranged on two sides of the bottom of the connecting frame 101, and one ends of the two first oil inlets 105 extend into the connecting frame 101, the bottom of the sealing frame 102 is provided with a second oil inlet nozzle 106, and the bottom end of the second oil inlet nozzle 106 extends to the outside of the connecting frame 101;
after the connecting pipe 40 and the connecting pipe 104 are connected in the sealing frame 102, a sealing gasket is arranged between the surfaces of the connecting pipe 40 and the connecting pipe 104 and the inside of the sealing frame 102, the inside of the sealing frame 102 and the inside of the connecting frame 101 are sealed and separated, oil is introduced into the inside of the connecting frame 101 through the first oil inlet nozzle 105, the numerical values of the oil pressure at two sides inside the connecting frame 101 are collected and recorded by using a pressure sensor, in the application process of the connecting frame 101, the connecting part of the connecting pipe 104 and the connecting pipe 40 is sealed, meanwhile, oil is used at two ends of the connecting pipe 104 and the connecting pipe 40 for oil sealing, the connecting part of the connecting pipe 104 and the connecting pipe 40 is prevented from being exposed to a humid environment to generate corrosion, and the problem that the fluid transmission tightness inside the connecting pipe 104 and the connecting pipe 40 is reduced due to corrosion at the connecting part of the connecting pipe 104 and the connecting pipe 40 is solved, thereby influencing the normal operation of the wellhead Christmas tree.
The connecting assembly comprises a connecting frame 201, the peripheral surface of the connecting frame 201 is fixedly connected with the inner wall of the sealing frame 102, two sides of the connecting frame 201 are both provided with connecting grooves 202, a through hole is arranged between the two connecting grooves 202, one ends of the guide pipe 40 and the connecting pipe 104 respectively extend into the two connecting grooves 202, one ends of the guide pipe 40 and the connecting pipe 104 are both provided with a first sealing ring 203, one end of the connecting pipe 104 is provided with a sealing pipe 204, one end of the sealing pipe 204 is provided with a pipe body 205, the surfaces of the guide pipe 40 and the connecting pipe 104 are symmetrically provided with two limiting grooves 206, limiting columns 207 are movably arranged in the two limiting grooves 206, a movable plate 208 is slidably arranged in the connecting frame 201, the top of the movable plate 208 is fixedly connected with the bottom ends of the limiting columns 207, the bottom of the movable plate 208 is provided with a spring 209, and one end of the spring 209 is fixedly connected with one side of the inner wall of the connecting frame 201, an electromagnet 210 is arranged inside the connecting frame 201 and below the movable plate 208, a metal suction block is arranged at the bottom of the movable plate 208, external threads 211 are arranged on one side of the surfaces of the guide pipe 40 and the connecting pipe 104, and internal threads 212 matched with the external threads 211 are arranged on one side of the inner walls of the two connecting grooves 202;
when the guide tube 40 and the connection tube 104 are connected in the sealing frame 102, one end of the guide tube 40 and one end of the connection tube 104 are respectively inserted into two sides of the sealing frame 102, at this time, the electromagnet 210 is energized, the metal attraction block at the bottom of the movable plate 208 is attracted by the electromagnet 210, the limit column 207 enters the inside of the connection frame 201, one end of the guide tube 40 and one end of the connection tube 104 enter the connection grooves 202 at two sides of the connection frame 201 respectively, the outer threads 211 on the surfaces of the guide tube 40 and the connection tube 104 are matched and connected with the inner threads 212 on one side of the inner walls of the connection grooves 202 until one end of the guide tube 40 and one end of the connection tube 104 are pressed on one side of the first sealing rings 203 on one side of the inner walls of the two connection grooves 202, the electromagnet 210 is de-energized, one end of the limit column 207 is inserted into the limit groove 206 under the action of the spring 209, the connection of the guide tube 40 and the connection tube 104 inside the sealing frame 102 is completed, the sealing tube 204 and the tube body 205 at one end of the connection tube 104 are inserted into the interior of the guide tube 40, then, oil is passed through the second oil inlet nozzle 106 into the sealing frame 102, so that the ports of the connecting pipe 104 and the conduit 40 are all in the oil, the oil pressure in the sealing frame 102 is monitored in real time by using the pressure gauge 103, when the oil pressure value in the sealing frame 102 is too large or too small, the conduit 40 at the position is immediately sealed by the stop valve 30, then the connection between the conduit 40 and the connecting pipe 104 at the position is maintained and overhauled, the oil sealing of the ports of the conduit 40 and the connecting pipe 104 by using the oil not only solves the problem that the sealing performance of the ports of the conduit 40 and the connecting pipe 104 is reduced due to corrosion, but also plays a role in monitoring the connection sealing performance between the conduit 40 and the connecting pipe 104, after the connection sealing performance between the conduit 40 and the connecting pipe 104 is damaged, the interior of the conduit 40 is mutually communicated with the interior of the sealing frame 102, if the fluid pressure in the conduit 40 is large, the oil pressure in the sealing frame 102 is also increased, otherwise, the oil pressure inside the sealing frame 102 is reduced, the oil pressure in the sealing frame 102 is monitored in real time through the pressure gauge 103, and the sealing leakage between the conduit 40 and the connecting pipe 104 is alarmed in time.
Example 2:
as a further supplement to the above embodiment, in the present invention, one end of the guide pipe 40 is provided with a sealing groove 213 matching with the sealing pipe 204, and one side of the inner wall of the sealing groove 213 is provided with a second sealing ring 214, so that the second sealing ring 214 is used to improve the sealing performance between the guide pipe 40 and the connecting pipe 104.
Leading to groove 215 has all been seted up to the top and the bottom of link 201, and two inside that lead to groove 215 communicate with the inside of manometer 103 and second oil feed mouth 106 respectively, lead to groove 215 through two and realize manometer 103 and second oil feed mouth 106 and the inside intercommunication of sealed frame 102 respectively, and then realize the real-time supervision to the leading in of fluid and the fluid pressure power in the sealed frame 102.
Example 3:
as a further supplement to the above embodiment, in the present invention, the surface of the connection pipe 104 is hermetically connected to one side of the connection frame 101 through the connection flange 50, the left side of the connection frame 101 is provided with the connection threaded hole 60, and one side of the connection threaded hole 60 is provided with the positioning threaded hole 70, the connection frame 101 is fixedly connected to one side of the stop valve 30 through the connection threaded hole 60 and the positioning threaded hole 70, and the connection threaded hole 60 is used to limit the conduit 40 in the connection frame 101; the surface of the connection pipe 104 is provided with a third gasket 80, and one side of the third gasket 80 is in contact with the left side of the inside of the connection frame 101.
Example 4:
referring to fig. 1-7, the present invention also discloses a method for using the multi-tube corrosion-proof wellhead christmas tree device, which comprises the following steps:
step one, inserting one end of the guide tube 40 and one end of the connecting tube 104 into two sides of the sealing frame 102 respectively, electrifying the electromagnet 210, attracting the metal attraction block at the bottom of the movable plate 208 by the electromagnet 210, making the limit column 207 enter the inside of the connecting frame 201, making one end of the guide tube 40 and one end of the connecting tube 104 enter the connecting grooves 202 at two sides of the connecting frame 201 respectively, connecting the outer threads 211 on the surfaces of the guide tube 40 and the connecting tube 104 and the inner threads 212 at one side of the inner walls of the two connecting grooves 202 in a matching manner until one end of the guide tube 40 and one end of the connecting tube 104 are pressed on one side of the first sealing ring 203 at one side of the inner walls of the two connecting grooves 202, cutting off the electromagnet 210, inserting one end of the limit column 207 into the limit groove 206 under the action of the spring 209, and completing the connection of the guide tube 40 and the connecting tube 104 inside the sealing frame 102;
secondly, oil passes through the second oil inlet nozzle 106 to the inside of the sealing frame 102, so that the ports of the connecting pipe 104 and the guide pipe 40 are both in the oil, the oil pressure in the sealing frame 102 is monitored in real time by using the pressure gauge 103, when the oil pressure value in the sealing frame 102 is too large or too small, the guide pipe 40 at the position is immediately sealed by the stop valve 30, and then the connection between the guide pipe 40 at the position and the connecting pipe 104 is maintained and overhauled;
step three, after the guide pipe 40 and the connecting pipe 104 are connected in the sealing frame 102, a sealing gasket is arranged between the surfaces of the guide pipe 40 and the connecting pipe 104 and the inside of the sealing frame 102, the inside of the sealing frame 102 and the inside of the connecting frame 101 are sealed and separated, oil is introduced into the inside of the connecting frame 101 through the first oil inlet nozzle 105, oil pressure values on two sides of the inside of the connecting frame 101 are collected and recorded through the pressure sensor, in the application process of the connecting frame 101, the connecting part of the connecting pipe 104 and the guide pipe 40 is sealed through the oil, and meanwhile, oil sealing is carried out on two ends of the connecting pipe 104 and the guide pipe 40 through the oil.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a well head christmas tree device for multitube anticorrosion, includes inlayer oil pipe (10) and outer oil pipe (20), the inside of outer oil pipe (20) is provided with inlayer oil pipe (10), its characterized in that: the surface of the outer oil pipe (20) is provided with a plurality of stop valves (30), the stop valves (30) positioned above the outer oil pipe (20) are connected with each other through a four-way joint, a guide pipe (40) is arranged inside each stop valve (30), and one side of each stop valve (30) is provided with a sealing mechanism;
the sealing mechanism comprises a connecting frame (101), one side of the connecting frame (101) is fixedly connected with one side of a stop valve (30), a sealing frame (102) is arranged inside the connecting frame (101), a pressure gauge (103) is arranged at the top of the connecting frame (101), the bottom end of the pressure gauge (103) extends into the sealing frame (102), pressure sensors are arranged on two sides of the sealing frame (102), one end of a guide pipe (40) extends into the connecting frame (101), one end of the guide pipe (40) located inside the connecting frame (101) penetrates through the sealing frame (102) and extends into the sealing frame (102), a connecting pipe (104) is arranged on the right side of the connecting frame (101), one end of the connecting pipe (104) extends into the sealing frame (102), a connecting assembly is arranged inside the sealing frame (102), and one ends of the guide pipe (40) and the connecting pipe (104) are connected with the inside of the connecting assembly, the oil-gas separation device is characterized in that first oil inlets (105) are arranged on two sides of the bottom of the connecting frame (101), one ends of the two first oil inlets (105) extend to the inside of the connecting frame (101), a second oil inlet (106) is arranged at the bottom of the sealing frame (102), and the bottom end of the second oil inlet (106) extends to the outside of the connecting frame (101).
2. The wellhead tree device for multi-tubular corrosion protection according to claim 1, wherein: coupling assembling includes link (201), and the inner wall fixed connection of global and sealed frame (102) of link (201), connecting groove (202) have all been seted up to the both sides of link (201), and have seted up the through-hole between two connecting grooves (202), the one end of pipe (40) and connecting pipe (104) extends to the inside of two connecting grooves (202) respectively, and the one end of pipe (40) and connecting pipe (104) all is provided with first sealing washer (203), the one end of connecting pipe (104) is provided with sealed tube (204), and the one end of sealed tube (204) is provided with body (205).
3. The wellhead tree device for multi-tubular corrosion protection according to claim 2, characterized in that: two limiting grooves (206) are symmetrically formed in the surfaces of the guide pipe (40) and the connecting pipe (104), and limiting columns (207) are movably arranged inside the two limiting grooves (206).
4. The wellhead tree device for multi-tubular corrosion protection according to claim 3, characterized in that: the inside slip of link (201) is provided with fly leaf (208), and the top of fly leaf (208) and the bottom fixed connection of spacing post (207), the bottom of fly leaf (208) is provided with spring (209), and one side fixed connection of the one end of spring (209) and link (201) inner wall, the inside of link (201) and the below that is located fly leaf (208) are provided with electro-magnet (210), and the bottom of fly leaf (208) is provided with the metal and attracts the piece.
5. The wellhead tree device for multi-tubular corrosion protection according to claim 2, characterized in that: external threads (211) are arranged on one side of the surfaces of the guide pipe (40) and the connecting pipe (104), and internal threads (212) matched with the external threads (211) are arranged on one side of the inner walls of the two connecting grooves (202).
6. The wellhead tree device for multi-tubular corrosion protection according to claim 2, characterized in that: one end of the guide pipe (40) is provided with a sealing groove (213) matched with the sealing pipe (204), and one side of the inner wall of the sealing groove (213) is provided with a second sealing ring (214).
7. The wellhead tree device for multi-tubular corrosion protection according to claim 2, characterized in that: through grooves (215) are formed in the top and the bottom of the connecting frame (201), and the insides of the two through grooves (215) are communicated with the inside of a pressure gauge (103) and the inside of a second oil inlet nozzle (106) respectively.
8. The wellhead tree device for multi-tubular corrosion protection according to claim 1, characterized in that: carry out sealing connection through flange (50) between the surface of connecting pipe (104) and one side of linking frame (101), connecting screw hole (60) have been seted up in the left side of linking frame (101), and one side of connecting screw hole (60) set up location screw hole (70), the surface of connecting pipe (104) is provided with third sealing washer (80), and the left side contact of one side and linking frame (101) inside of third sealing washer (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210578849.1A CN114809974B (en) | 2022-05-26 | 2022-05-26 | Wellhead Christmas tree device for multi-pipe corrosion prevention |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210578849.1A CN114809974B (en) | 2022-05-26 | 2022-05-26 | Wellhead Christmas tree device for multi-pipe corrosion prevention |
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| Publication Number | Publication Date |
|---|---|
| CN114809974A true CN114809974A (en) | 2022-07-29 |
| CN114809974B CN114809974B (en) | 2023-11-17 |
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| CN202210578849.1A Active CN114809974B (en) | 2022-05-26 | 2022-05-26 | Wellhead Christmas tree device for multi-pipe corrosion prevention |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112983330A (en) * | 2021-03-15 | 2021-06-18 | 淮阴工学院 | Christmas tree wellhead device |
| CN114016946A (en) * | 2021-11-24 | 2022-02-08 | 陕西延长石油金石钻采设备有限公司 | CO (carbon monoxide)2Wellhead device for oil displacement |
| CN114199628A (en) * | 2022-02-21 | 2022-03-18 | 东营芯享石油科技有限公司 | Sampler with multi-point homogeneous mixing collection function for oil field |
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2022
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| CA2454857A1 (en) * | 2003-02-07 | 2004-08-07 | Stream-Flo Industries Ltd. | Y-body christmas tree for use with coil tubing |
| US20040163805A1 (en) * | 2003-02-25 | 2004-08-26 | Smith David Randolph | Method and apparatus to complete a well having tubing inserted through a valve |
| WO2012024440A2 (en) * | 2010-08-17 | 2012-02-23 | Wild Well Control, Inc. | Retrieving a subsea tree plug |
| CN206360695U (en) * | 2016-12-26 | 2017-07-28 | 中国石油化工股份有限公司 | Downhole sampler considers sand joint |
| CN211924134U (en) * | 2019-09-25 | 2020-11-13 | 美钻石油钻采***（南京）有限公司 | Oil pipe cross device for oil field wellhead device and Christmas tree |
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| US10975654B1 (en) * | 2019-11-07 | 2021-04-13 | Saudi Arabian Oil Company | Wellhead telescopic adaptor for wellhead assembly |
| CN212225182U (en) * | 2020-05-08 | 2020-12-25 | 江苏益马机械有限公司 | Eccentric electric submersible pump integral production tree wellhead |
| CN212563164U (en) * | 2020-07-06 | 2021-02-19 | 熊煜 | Well head protector for oil and gas field development |
| CN112983330A (en) * | 2021-03-15 | 2021-06-18 | 淮阴工学院 | Christmas tree wellhead device |
| CN114016946A (en) * | 2021-11-24 | 2022-02-08 | 陕西延长石油金石钻采设备有限公司 | CO (carbon monoxide)2Wellhead device for oil displacement |
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| CN114809974B (en) | 2023-11-17 |
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