CN108612505B - Offshore oil exploitation method - Google Patents
Offshore oil exploitation method Download PDFInfo
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- CN108612505B CN108612505B CN201810359453.1A CN201810359453A CN108612505B CN 108612505 B CN108612505 B CN 108612505B CN 201810359453 A CN201810359453 A CN 201810359453A CN 108612505 B CN108612505 B CN 108612505B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 97
- 238000005086 pumping Methods 0.000 claims abstract description 83
- 241000191291 Abies alba Species 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims description 143
- 238000007789 sealing Methods 0.000 claims description 103
- 238000004804 winding Methods 0.000 claims description 67
- 229910001220 stainless steel Inorganic materials 0.000 claims description 24
- 239000010935 stainless steel Substances 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000013535 sea water Substances 0.000 abstract description 22
- 238000011900 installation process Methods 0.000 abstract description 13
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 238000000605 extraction Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002689 soil 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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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
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/013—Connecting a production flow line to an underwater well head
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Abstract
The invention relates to the technical field of oil exploitation, in particular to an offshore oil exploitation method, which comprises the following steps: s1, building an oil exploitation platform right above the oil exploitation area; s2, installing the Christmas tree on the seabed by utilizing the Christmas tree preinstallation equipment right above the oil exploitation platform in S1; s3, drilling the seabed oil by using a drilling machine on the basis of S2; s4, after S3 is finished, the oil pumping pipeline is lowered into the borehole; and S5, extracting oil by using an oil pump on the basis of S3. The pre-installation equipment of the Christmas tree adopted in the method can realize that the oil pumping pipe can be installed quickly, the installation position of the oil pumping pipe can be ensured to have less contact with seawater in the whole installation process, the oil drilling precision is improved, the installation pipe can protect the oil pumping pipe, the oil pumping pipe is prevented from being corroded by seawater and sea mud, and the service life of the oil pumping pipe is prolonged.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to an offshore oil exploitation method.
Background
Activities for producing oil and gas in inland, continental shelf and deep sea areas; the method comprises the operations of geological research, feasibility analysis, engineering design, well drilling, collection, storage and transportation and the like. Geological research, engineering design and the like are approximately the same as those of onshore oil field development, but drilling, collection, storage and transportation and the like are fundamentally different from onshore; offshore oil and gas development relates to the subjects of oceanography, meteorology, hydraulics, hydrodynamics, structural mechanics and the like, and professional technologies of shipbuilding, navigation, environmental protection, materials, underwater acoustic engineering and the like.
During offshore oil exploitation, the arrangement of an underwater Christmas tree is the most important, the existing installation method is short of a better protection device for a preset oil exploitation position, an oil pumping pipe is difficult to install, a limiting device is short, the oil pumping pipe is short of a protection facility during use, and the service life is limited. In view of this, the present invention provides an offshore oil production method, which has the following characteristics:
(1) according to the offshore oil exploitation method, the Christmas tree pre-installation equipment is adopted in the method, the sealing plate can move back and forth under the driving of the rolling mechanism, when the oil extraction pipe is installed, the oil extraction pipe is connected with the installation hole firstly, then the sealing plate is driven to move by the first rolling mechanism, so that the oil extraction pipe can be screwed into the first installation pipe, then the unsealing blocking plate is opened, the oil extraction pipe can be screwed into the second installation pipe, oil extraction operation is carried out, the oil extraction pipe can be installed quickly, the installation position of the oil extraction pipe in the whole installation process can be guaranteed to be in less contact with seawater, the oil drilling precision is improved, the installation pipe can protect the oil extraction pipe, the oil extraction pipe is prevented from being corroded by seawater and sea mud, and the service life of the oil extraction pipe is prolonged.
(2) According to the offshore oil exploitation method, the pre-installation equipment of the Christmas tree adopted in the method can achieve the effect of pre-positioning the installation of the oil pumping pipe through the arrangement of the supporting mechanism, the sealing mechanism and the connecting mechanism, and can protect the pre-explored oil pumping point, so that the whole installation process of the underwater oil pumping tree is more efficient and convenient.
(3) According to the offshore oil exploitation method, the pre-installation equipment of the Christmas tree, the sealing rubber pads and the water stop ring are arranged in the method, so that seawater can be effectively prevented from permeating into the installation pipe, the service performance of the equipment is improved, and water accumulation in the installation pipe is avoided.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an offshore oil exploitation method, wherein a sealing plate can be driven by a rolling mechanism to move back and forth, when an oil pumping pipe is installed, the oil pumping pipe is connected with an installation hole firstly, then the sealing plate is driven by a first rolling mechanism to move, so that the oil pumping pipe can be screwed into a first installation pipe, then an unsealing blocking plate is punched, the oil pumping pipe can be screwed into a second installation pipe to perform oil pumping operation, the oil pumping pipe can be installed quickly, the installation position of the oil pumping pipe in the whole installation process can be ensured to be in less contact with seawater, the oil drilling precision is improved, the installation pipe can protect the oil pumping pipe, the oil pumping pipe is prevented from being corroded by seawater and sea mud, and the service life of the oil pumping pipe is prolonged; through the arrangement of the supporting mechanism, the sealing mechanism and the connecting mechanism, the pre-positioning effect can be achieved on the installation of the oil pumping pipe, and the pre-explored oil pumping point can be protected, so that the whole installation process of the underwater oil pumping tree is more efficient and convenient; the arrangement of each sealing rubber pad and the water stop ring can effectively prevent seawater from permeating into the installation pipe, so that the service performance of the equipment is improved, and accumulated water in the installation pipe is avoided.
The technical scheme adopted by the invention for solving the technical problems is as follows: an offshore oil production process, comprising the steps of:
s1, building an oil exploitation platform right above the oil exploitation area;
s2, installing the Christmas tree on the seabed by utilizing the Christmas tree preinstallation equipment right above the oil exploitation platform in S1;
s3, drilling the seabed oil by using a drilling machine on the basis of S2;
s4, after S3 is finished, the oil pumping pipeline is lowered into the borehole;
s5, on the basis of S3, oil is extracted by an oil well pump;
the pre-installation equipment of the Christmas tree adopted in the method comprises a supporting mechanism, a box body, a second installation pipe, a sealing mechanism, a connecting mechanism, a first winding mechanism, a second winding mechanism, an electric push rod, a power supply box and an oil pumping pipe; the box body is arranged at the bottom of the supporting mechanism; the second mounting pipe penetrates through the box body, and the second mounting pipe is communicated with the supporting mechanism; the top of the supporting mechanism is connected with the sealing mechanism in a sliding mode, the sealing mechanism is used for sealing the supporting mechanism and the second installation pipe, and the sealing mechanism can slide to perform station conversion; the connecting mechanism is arranged in the box body, and the second mounting pipe can be fixedly connected through the connecting mechanism; the side wall of the connecting mechanism is provided with the electric push rod, and the electric push rod is arranged inside the box body; the first winding mechanism and the second winding mechanism are respectively arranged on two sides in the box body, the first winding mechanism and the second winding mechanism are identical in structure, the first winding mechanism and the second winding mechanism are opposite in rotation direction, and the first winding mechanism and the second winding mechanism are used for carrying out traction displacement on the sealing mechanism; the electric push rod, the first winding mechanism and the second winding mechanism are all electrically connected with the power supply box; the inside of the sealing mechanism, the inside of the supporting mechanism and the inside of the second mounting pipe are all in threaded connection with the oil pumping pipe; the outer side of the bottom of the oil pumping pipe is conical, and the inner part of the oil pumping pipe is of a hollow structure.
The supporting mechanism comprises a supporting plate, a base, a guide rail frame, a first mounting pipe and fixing anchors, wherein the base is arranged on the surface of the supporting plate, the first mounting pipe penetrates through the base and one side of the inside of the supporting plate, the first mounting pipe is arranged right above the second mounting pipe, the fixing anchors are arranged at four corners of the surface of the supporting plate, and the guide rail frame is symmetrically arranged on the surface of the base; in order to protect the preset oil pumping point and avoid the influence of seawater flow on the later oil pumping operation.
Specifically, the length of the guide rail frame is the same as that of the base, a first sealing rubber layer is connected to the surface of the base in a gluing mode, and the base is of a cuboid structure; can be convenient for sealing mechanism's removal, improve sealed effect.
The sealing mechanism comprises a sealing plate, a sliding rail, a second sealing rubber layer and hanging rings, the sliding rail is matched with the guide rail frame and is in sliding connection with the guide rail frame, the sliding rail is symmetrically arranged on two side walls of the sealing plate, the area of the sealing plate is the same as that of the base, the sealing plate and the base are arranged in parallel, the hanging rings are arranged at two ends of the sealing plate, mounting holes are formed in the surface of the sealing plate, and the second sealing rubber layer is arranged on the bottom surface of the sealing plate; in order to realize the conversion on the initial installation station and the connection station, the installation process is more efficient, the contact with water is less, and the water is prevented from entering the installation pipe.
Specifically, the mounting hole is circular, the mounting hole is arranged on one side, away from the surface of the first mounting pipe, of the sealing plate, and the diameter of the mounting hole is the same as that of the first mounting pipe; the inner side of the sealing plate is provided with a bulge which is of a circular ring structure, the top end of the inner side of the first mounting pipe is provided with a groove, and the bulge is connected with the groove in a matched manner; the upper part of the mounting hole is of a conical hollow structure, and the lower part of the mounting hole is of a hollow cylindrical structure; in order to make the cooperation effect better, be convenient for oil pipe's installation simultaneously to the mounting hole is inseparabler with closing plate connection, makes oil leakage not appear in the acquisition process.
Specifically, the connecting mechanism comprises a connecting plate, a plugging plate and an outer baffle plate, the connecting plate is arranged at the joint of the first mounting pipe and the second mounting pipe, the plugging plate is connected to the inside of the connecting plate in a sliding manner, the outer baffle plate is arranged on the outer end face of the plugging plate, and the outer baffle plate is fixedly connected with the electric push rod; in order to connect and plug the two installation pipes, multi-stage protection is realized.
Specifically, the first mounting pipe and the second mounting pipe are both perpendicular to the connecting plate, and the area of the plugging plate is larger than the sectional areas of the first mounting pipe and the second mounting pipe; in order to improve the plugging effect.
Specifically, the first winding mechanism comprises a winding drum, a driving motor, a stainless steel traction rope and a hook, the winding drum is arranged on one side inside the box body, the stainless steel traction rope is wound on the outer wall of the winding drum, the hook is arranged at the end part of the stainless steel traction rope, the hook is buckled and connected with the hanging ring, the side wall of the winding drum is rotatably connected with the driving motor, and the stainless steel traction rope penetrates through the side wall of the box body; in order to realize the traction of the sealing mechanism, the station switching is realized.
Specifically, through holes are formed in the positions, opposite to the first rolling mechanism and the second rolling mechanism, of the two side walls of the box body, rubber sealing rings and water stopping rings are embedded into the through holes, and the stainless steel traction rope penetrates through the rubber sealing rings and the water stopping rings; in order to prevent water from entering the tank.
Specifically, guide wheels are symmetrically arranged on the outer side wall of the box body, the stainless steel traction rope penetrates through the outer wall of each guide wheel in a fit mode, and the guide wheels extend out of the side face of the supporting plate; in order to make the moving process of the stainless steel traction rope smoother.
The invention has the beneficial effects that:
(1) according to the offshore oil exploitation method, the Christmas tree pre-installation equipment is adopted in the method, the sealing plate can move back and forth under the driving of the rolling mechanism, when the oil extraction pipe is installed, the oil extraction pipe is connected with the installation hole firstly, then the sealing plate is driven to move by the first rolling mechanism, so that the oil extraction pipe can be screwed into the first installation pipe, then the unsealing blocking plate is opened, the oil extraction pipe can be screwed into the second installation pipe, oil extraction operation is carried out, the oil extraction pipe can be installed quickly, the installation position of the oil extraction pipe in the whole installation process can be guaranteed to be in less contact with seawater, the oil drilling precision is improved, the installation pipe can protect the oil extraction pipe, the oil extraction pipe is prevented from being corroded by seawater and sea mud, and the service life of the oil extraction pipe is prolonged.
(2) According to the offshore oil exploitation method, the pre-installation equipment of the Christmas tree adopted in the method can achieve the effect of pre-positioning the installation of the oil pumping pipe through the arrangement of the supporting mechanism, the sealing mechanism and the connecting mechanism, and can protect the pre-explored oil pumping point, so that the whole installation process of the underwater oil pumping tree is more efficient and convenient.
(3) According to the offshore oil exploitation method, the pre-installation equipment of the Christmas tree, the sealing rubber pads and the water stop ring are arranged in the method, so that seawater can be effectively prevented from permeating into the installation pipe, the service performance of the equipment is improved, and water accumulation in the installation pipe is avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the pre-installation equipment for a Christmas tree used in the present method;
FIG. 2 is a schematic view of the connection structure between the supporting mechanism, the sealing mechanism and the interior of the box body shown in FIG. 1;
FIG. 3 is a schematic structural view of the first winding mechanism shown in FIG. 2;
FIG. 4 is a schematic view of the connection mechanism and the mounting tube shown in FIG. 2;
FIG. 5 is a schematic view of the connection structure of the case and the stainless steel hauling cable shown in FIG. 1;
FIG. 6 is a schematic view of the sealing mechanism shown in FIG. 1 displaced to the top of the first mounting tube;
FIG. 7 is a schematic cross-sectional view of the oil pumping pipe, the installation hole, and the first installation pipe shown in FIG. 1.
In the figure: 1. the device comprises a supporting mechanism, 11, a supporting plate, 12, a base, 121, a first sealing rubber layer, 122, a groove, 13, a guide rail frame, 14, a first installation pipe, 15, a fixing anchor, 2, a box body, 21, a perforation, 22, a rubber sealing ring, 23, a water stop ring, 3, a second installation pipe, 4, a sealing mechanism, 41, a sealing plate, 411, an installation hole, 412, a protrusion, 42, a sliding rail, 43, a second sealing rubber layer, 44, a hanging ring, 5, a connecting mechanism, 51, a connecting plate, 52, a plugging plate, 53, an outer baffle, 6, a first winding mechanism, 61, a winding drum, 62, a driving motor, 63, a stainless steel traction rope, 64, a hook, 7, a second mechanism, 8, an electric push rod, 9, a power supply box, 9a, an oil pumping pipe, 9b and a guide wheel.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, an offshore oil production method according to the present invention includes the steps of:
s1, building an oil exploitation platform right above the oil exploitation area;
s2, installing the Christmas tree on the seabed by utilizing the Christmas tree preinstallation equipment right above the oil exploitation platform in S1;
s3, drilling the seabed oil by using a drilling machine on the basis of S2;
s4, after S3 is finished, the oil pumping pipeline is lowered into the borehole;
s5, on the basis of S3, oil is extracted by an oil well pump;
the pre-installation equipment of the Christmas tree adopted in the method comprises a supporting mechanism 1, a box body 2, a second installation pipe 3, a sealing mechanism 4, a connecting mechanism 5, a first winding mechanism 6, a second winding mechanism 7, an electric push rod 8, a power supply box 9 and an oil pumping pipe 9 a; the box body 2 is arranged at the bottom of the supporting mechanism 1; the second mounting pipe 3 penetrates through the box body 2, and the second mounting pipe 3 is communicated with the supporting mechanism 1; the top of the supporting mechanism 1 is connected with the sealing mechanism 4 in a sliding manner, the sealing mechanism 4 is used for sealing the supporting mechanism 1 and the second installation pipe 3, and the sealing mechanism 4 can slide to perform station conversion; the connecting mechanism 5 is arranged in the box body 2, and the second mounting pipe 3 can be fixedly connected through the connecting mechanism 5; the side wall of the connecting mechanism 5 is provided with the electric push rod 8, and the electric push rod 8 is arranged inside the box body 2; the first winding mechanism 6 and the second winding mechanism 7 are respectively arranged on two sides of the interior of the box body 2, the first winding mechanism 6 and the second winding mechanism 7 are identical in structure, the first winding mechanism 6 and the second winding mechanism 7 are opposite in rotation direction, and the first winding mechanism 6 and the second winding mechanism 7 are used for carrying out traction displacement on the sealing mechanism 4; the electric push rod 8, the first winding mechanism 6 and the second winding mechanism 7 are all electrically connected with the power box 9; the interior of the sealing mechanism 4, the interior of the supporting mechanism 1 and the interior of the second mounting pipe 3 are all in threaded connection with the oil pumping pipe 9 a; the outer side of the bottom of the oil pumping pipe 9a is conical, and the inner part of the oil pumping pipe is of a hollow structure.
Specifically, as shown in fig. 1, the support mechanism 1 includes a support plate 11, a base 12, a rail bracket 13, a first installation pipe 14 and a fixing anchor 15, the base 12 is disposed on the surface of the support plate 11, the first installation pipe 14 penetrates through one side of the inside of the base 12 and the support plate 11, the first installation pipe 14 is disposed right above the second installation pipe 3, the fixing anchor 15 is disposed at four corners of the surface of the support plate 11, and the rail bracket 13 is symmetrically disposed on the surface of the base 12; in order to protect the preset oil pumping point and avoid the influence of seawater flow on the later oil pumping operation.
Specifically, as shown in fig. 1 and 2, the length of the rail bracket 13 is the same as that of the base 12, a first sealing rubber layer 121 is bonded to the surface of the base 12, and the base 12 has a rectangular parallelepiped structure; the sealing mechanism 4 can be moved conveniently, and the sealing effect is improved.
Specifically, as shown in fig. 1, the sealing mechanism 4 includes a sealing plate 41, a sliding rail 42, a second sealing rubber layer 43, and a hanging ring 44, the sliding rail 42 is slidably connected to the guide rail frame 13 in a matching manner, the sliding rail 42 is symmetrically disposed on two side walls of the sealing plate 41, the area of the sealing plate 41 is the same as that of the base 12, the sealing plate 41 and the base 12 are disposed in parallel, the hanging ring 44 is disposed at both ends of the sealing plate 41, a mounting hole 411 is formed in the surface of the sealing plate 41, and the second sealing rubber layer 43 is disposed on the bottom surface of the sealing plate 41; in order to realize the conversion on the initial installation station and the connection station, the installation process is more efficient, the contact with water is less, and the water is prevented from entering the installation pipe.
Specifically, as shown in fig. 1 and 7, the mounting hole 411 is circular, the mounting hole 411 is provided on the side of the sealing plate 41 away from the surface of the first mounting pipe 14, and the diameter of the mounting hole 411 is the same as the diameter of the first mounting pipe 14; a protrusion 412 is arranged on the inner side of the sealing plate 41, the protrusion 412 is of a circular ring structure, a groove 122 is arranged at the top end of the inner side of the first mounting pipe 14, and the protrusion 412 is connected with the groove 122 in a matching manner; the upper part of the mounting hole 411 is a conical hollow structure and the lower part thereof is a hollow cylindrical structure; in order to make the cooperation effect better, be convenient for oil pipe's installation.
Specifically, as shown in fig. 2 and 4, the connecting mechanism 5 includes a connecting plate 51, a blocking plate 52 and an outer baffle plate 53, the connecting plate 51 is disposed at a connection position of the first mounting pipe 14 and the second mounting pipe 3, the blocking plate 52 is slidably connected inside the connecting plate 51, the outer baffle plate 53 is disposed on an outer end surface of the blocking plate 52, and the outer baffle plate 53 is fixedly connected to the electric push rod 8; in order to connect and plug the two installation pipes, multi-stage protection is realized.
Specifically, as shown in fig. 2 and 4, the first mounting tube 14 and the second mounting tube 3 are both perpendicular to the connecting plate 51, and the area of the blocking plate 52 is larger than the cross-sectional area of the first mounting tube 14 and the second mounting tube 3; in order to improve the plugging effect.
Specifically, as shown in fig. 2 and 3, the first winding mechanism 6 includes a winding drum 61, a driving motor 62, a stainless steel pulling rope 63 and a hook 64, the winding drum 61 is disposed on one side of the inside of the box body 2, the stainless steel pulling rope 63 is wound around the outer wall of the winding drum 61, the hook 64 is disposed at the end of the stainless steel pulling rope 63, the hook 64 is connected to the hanging ring 44 in a buckling manner, the side wall of the winding drum 61 is rotatably connected to the driving motor 62, and the stainless steel pulling rope 63 penetrates through the side wall of the box body 2; in order to achieve traction for the sealing means 4, a station change is effected.
Specifically, as shown in fig. 5, through holes 21 are formed in positions of two side walls of the box body 2 opposite to the first winding mechanism 6 and the second winding mechanism 7, a rubber sealing ring 22 and a water stop ring 23 are embedded in the through holes 21, and the stainless steel traction rope 63 penetrates through the rubber sealing ring 22 and the water stop ring 23; in order to prevent water from entering the tank 2.
Specifically, as shown in fig. 2, guide wheels 9b are symmetrically arranged on the outer side wall of the box body 2, the stainless steel traction rope 63 is attached to and penetrates through the outer wall of the guide wheels 9b, and the guide wheels 9b extend out of the side surface of the support plate 11; in order to make the moving process of the stainless steel traction rope 63 smoother.
The sealing plate 41 can move back and forth under the driving of the winding mechanism, when the oil pumping pipe 9a is installed, the oil pumping pipe 9a is connected with the installation hole 411 firstly, then the sealing plate 41 is driven by the first winding mechanism 6 to move, so that the oil pumping pipe 9a can be screwed into the first installation pipe 14, then the unsealing blocking plate 52 is opened, the oil pumping pipe 9a can be screwed into the second installation pipe 3 for oil pumping operation, the oil pumping pipe 9a can be installed quickly, the installation position of the oil pumping pipe 9a in the whole installation process can be ensured to be in less contact with seawater, the oil drilling precision is improved, the installation pipe can protect the oil pumping pipe 9a, the oil pumping pipe 9a is prevented from being corroded by seawater and sea mud, and the service life of the oil pumping pipe 9a is prolonged; through the arrangement of the supporting mechanism 1, the sealing mechanism 4 and the connecting mechanism 5, the pre-positioning effect can be achieved on the installation of the oil pumping pipe 9a, and the pre-explored oil pumping point can be protected, so that the whole installation process of the underwater oil pumping tree is more efficient and convenient; the arrangement of each sealing rubber pad and the water stop ring 23 can effectively prevent seawater from permeating into the installation pipe, so that the service performance of the equipment is improved, and accumulated water in the installation pipe is avoided. The method specifically comprises the following steps:
(1) when offshore oil collection is carried out, a hole with a certain depth is drilled at the sea bottom, the equipment is installed at a specified position, the second installation pipe 3 is ensured to be arranged in the reserved hole, and then each fixing anchor 15 is fixed, so that the installation of the equipment is realized;
(2) when the underwater Christmas tree needs to be installed, firstly, the oil pumping pipe 9a is screwed into the installation hole 411 through threads, then the driving motor 62 in the first winding mechanism 6 is started to drive the winding drum 61 to rotate, and further the sealing plate 41 is driven to move through the stainless steel traction rope 63, the stainless steel traction rope 63 is wound outside the winding drum 61 along the guide wheel 9b, the sliding rail 42 moves along the guide rail frame 13, the first sealing rubber layer 121 and the second sealing rubber layer 43 can seal the joint of the sealing plate 41 and the base 12 to prevent seawater from entering, and the rubber sealing ring 22 and the water stop ring 23 can prevent seawater from flowing into the box body 2, so that the whole moving process keeps good sealing performance; when the mounting hole 411 of the sealing plate 41 moves to a position right above the first mounting pipe 14, the first winding mechanism 6 stops working, and then the oil pumping pipe 9a continues to be screwed downwards, so that the oil pumping pipe 9a passes through the mounting hole 411 and is screwed into the first mounting pipe 14;
(3) starting the electric push rod 8 to drive the plugging plate 52 to leave the connecting plate 51, then communicating the first installation pipe 14 and the second installation pipe 3, and then continuously screwing the oil pumping pipe 9a downwards so that the oil pumping pipe 9a enters the second installation pipe 3 and contacts with a seabed soil layer, and finally performing punching and mining operation;
(4) when the oil pumping pipe 9a needs to be taken down, only the oil pumping pipe 9a needs to be rotated reversely, so that the oil pumping pipe 9a is screwed out upwards, when the second installation pipe 3 is screwed out, the blocking plate 52 is driven to block the second installation pipe 3, then the upward rotation is continued, when the first installation pipe 14 is screwed out and the installation hole 411 is entered, the second winding mechanism 7 drives the sealing plate 41 to move reversely, so that the installation hole 411 leaves the first installation pipe 3, the sealing plate 41 can block the first installation pipe 14, and then the oil pumping pipe 9a can be screwed out.
The sealing plate 41 can move back and forth under the driving of the winding mechanism, when the oil pumping pipe 9a is installed, the oil pumping pipe 9a is connected with the installation hole 411 firstly, then the sealing plate 41 is driven to move by the first winding mechanism 6, so that the oil pumping pipe 9a can be screwed into the first installation pipe 14, then the unsealing blocking plate 52 is opened, the oil pumping pipe 9a can be screwed into the second installation pipe 3 for oil pumping operation, the oil pumping pipe 9a can be installed quickly, the installation position of the oil pumping pipe 9a in the whole installation process can be ensured to be in less contact with seawater, the oil drilling precision is improved, the installation pipe can protect the oil pumping pipe 9a, the oil pumping pipe 9a is prevented from being corroded by seawater and sea mud, and the service life of the oil pumping pipe 9a is prolonged; through the arrangement of the supporting mechanism 1, the sealing mechanism 4 and the connecting mechanism 5, the pre-positioning effect can be achieved on the installation of the oil pumping pipe 9a, and the pre-explored oil pumping point can be protected, so that the whole installation process of the underwater oil pumping tree is more efficient and convenient; the arrangement of each sealing rubber pad and the water stop ring 23 can effectively prevent seawater from permeating into the installation pipe, so that the service performance of the equipment is improved, and accumulated water in the installation pipe is avoided.
The closure plate 52 seals the top of the second installation pipe 3 and prevents seawater in the second installation pipe 3 from penetrating into the first installation pipe 14.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An offshore oil production method, characterized in that the method comprises the following steps:
s1, building an oil exploitation platform right above the oil exploitation area;
s2, installing the Christmas tree on the seabed by utilizing the Christmas tree preinstallation equipment right above the oil exploitation platform in S1;
s3, drilling the seabed oil by using a drilling machine on the basis of S2;
s4, after S3 is finished, the oil pumping pipeline is lowered into the borehole;
s5, on the basis of S3, oil is extracted by an oil well pump;
the pre-installation equipment of the Christmas tree adopted in the method comprises a supporting mechanism (1), a box body (2), a second installation pipe (3), a sealing mechanism (4), a connecting mechanism (5), a first winding mechanism (6), a second winding mechanism (7), an electric push rod (8), a power supply box (9) and an oil pumping pipe (9 a); the box body (2) is arranged at the bottom of the supporting mechanism (1); the second mounting pipe (3) penetrates through the box body (2), and the second mounting pipe (3) is communicated with the supporting mechanism (1); the top of the supporting mechanism (1) is connected with the sealing mechanism (4) in a sliding mode, the sealing mechanism (4) is used for sealing the supporting mechanism (1) and the second installation pipe (3), and the sealing mechanism (4) can slide to perform station-to-station conversion; the connecting mechanism (5) is arranged in the box body (2), and the second mounting pipe (3) can be fixedly connected through the connecting mechanism (5); the side wall of the connecting mechanism (5) is provided with the electric push rod (8), and the electric push rod (8) is arranged inside the box body (2); the first winding mechanism (6) and the second winding mechanism (7) are respectively arranged on two sides in the box body (2), the first winding mechanism (6) and the second winding mechanism (7) are identical in structure, the first winding mechanism (6) and the second winding mechanism (7) are opposite in rotation direction, and the first winding mechanism (6) and the second winding mechanism (7) are used for carrying out traction displacement on the sealing mechanism (4); the electric push rod (8), the first winding mechanism (6) and the second winding mechanism (7) are electrically connected with the power supply box (9); the inner part of the sealing mechanism (4), the inner part of the supporting mechanism (1) and the inner part of the second mounting pipe (3) are in threaded connection with the oil pumping pipe (9 a); the outer side of the bottom of the oil pumping pipe (9a) is conical, and the inner part of the oil pumping pipe is of a hollow structure;
the supporting mechanism (1) comprises a supporting plate (11), a base (12), a guide rail frame (13), a first mounting pipe (14) and fixing anchors (15), wherein the base (12) is arranged on the surface of the supporting plate (11), the first mounting pipe (14) penetrates through the base (12) and one side of the inside of the supporting plate (11), the first mounting pipe (14) is arranged right above the second mounting pipe (3), the fixing anchors (15) are arranged at four corners of the surface of the supporting plate (11), and the guide rail frame (13) is symmetrically arranged on the surface of the base (12);
the length of the guide rail frame (13) is the same as that of the base (12), a first sealing rubber layer (121) is connected to the surface of the base (12) in a gluing mode, and the base (12) is of a cuboid structure;
the sealing mechanism (4) comprises a sealing plate (41), a sliding rail (42), a second sealing rubber layer (43) and hanging rings (44), the sliding rail (42) and the guide rail frame (13) are matched with each other and are in sliding connection, the sliding rail (42) is symmetrically arranged on two side walls of the sealing plate (41), the area of the sealing plate (41) is the same as that of the base (12), the sealing plate (41) and the base (12) are arranged in parallel, the hanging rings (44) are arranged at two ends of the sealing plate (41), a mounting hole (411) is formed in the surface of the sealing plate (41), and the second sealing rubber layer (43) is arranged on the bottom surface of the sealing plate (41);
the connecting mechanism (5) comprises a connecting plate (51), a blocking plate (52) and an outer baffle (53), the connecting plate (51) is arranged at the connecting position of the first mounting pipe (14) and the second mounting pipe (3), the blocking plate (52) is connected to the inside of the connecting plate (51) in a sliding mode, the outer baffle (53) is arranged on the outer end face of the blocking plate (52), and the outer baffle (53) is fixedly connected with the electric push rod (8);
the first winding mechanism (6) comprises a winding drum (61), a driving motor (62), a stainless steel traction rope (63) and a hook (64), the winding drum (61) is arranged on one side of the interior of the box body (2), the stainless steel traction rope (63) is wound on the outer wall of the winding drum (61), the hook (64) is arranged at the end part of the stainless steel traction rope (63), the hook (64) is connected with the hanging ring (44) in a buckling mode, the side wall of the winding drum (61) is connected with the driving motor (62) in a rotating mode, and the stainless steel traction rope (63) penetrates through the side wall of the box body (2);
both sides wall of box (2) with first winding mechanism (6), second winding mechanism (7) relative position department has all opened perforation (21), the inside of perforation (21) is equipped with the embedding and has rubber seal (22) and seal ring (23), stainless steel haulage rope (63) run through in rubber seal (22) with seal ring (23).
2. An offshore oil production process according to claim 1, characterized in that: the first installation pipe (14) and the second installation pipe (3) are perpendicular to the connecting plate (51), and the area of the blocking plate (52) is larger than the sectional area of the first installation pipe (14) and the sectional area of the second installation pipe (3).
3. An offshore oil production process according to claim 2, characterized in that: the outer side wall of the box body (2) is symmetrically provided with guide wheels (9b), the outer wall of each guide wheel (9b) is attached to and penetrates through the stainless steel traction rope (63), and the guide wheels (9b) extend out of the side faces of the supporting plates (11).
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| CN201810359453.1A CN108612505B (en) | 2018-04-20 | 2018-04-20 | Offshore oil exploitation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810359453.1A CN108612505B (en) | 2018-04-20 | 2018-04-20 | Offshore oil exploitation method |
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| CN108612505B true CN108612505B (en) | 2020-10-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2177768A (en) * | 1985-06-21 | 1987-01-28 | R J Brown And Associates | Replaceable seals for pipelines |
| GB2351301A (en) * | 1999-06-25 | 2000-12-27 | Stephen Hatton | Concentric catenary riser |
| CN102536150A (en) * | 2010-12-15 | 2012-07-04 | 韦特柯格雷公司 | Emergency subsea wellhead closure devices |
| CN102678082A (en) * | 2011-03-01 | 2012-09-19 | 韦特柯格雷公司 | Drilling riser adapter (11) connecting member possessing submarine operation |
| CN105057476A (en) * | 2015-07-17 | 2015-11-18 | 苏州金牛精密机械有限公司 | Automatic connector for air pipe connecting ports |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089377A (en) * | 1977-01-27 | 1978-05-16 | Societe Nationale Elf Aquitaine (Production) | Seal adaptor alignment means and landing tool and method |
-
2018
- 2018-04-20 CN CN201810359453.1A patent/CN108612505B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2177768A (en) * | 1985-06-21 | 1987-01-28 | R J Brown And Associates | Replaceable seals for pipelines |
| GB2351301A (en) * | 1999-06-25 | 2000-12-27 | Stephen Hatton | Concentric catenary riser |
| CN102536150A (en) * | 2010-12-15 | 2012-07-04 | 韦特柯格雷公司 | Emergency subsea wellhead closure devices |
| CN102678082A (en) * | 2011-03-01 | 2012-09-19 | 韦特柯格雷公司 | Drilling riser adapter (11) connecting member possessing submarine operation |
| CN105057476A (en) * | 2015-07-17 | 2015-11-18 | 苏州金牛精密机械有限公司 | Automatic connector for air pipe connecting ports |
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| CN108612505A (en) | 2018-10-02 |
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