CN115584946A - Oil gas well presses operation equipment in area - Google Patents
Oil gas well presses operation equipment in area Download PDFInfo
- Publication number
- CN115584946A CN115584946A CN202211285606.5A CN202211285606A CN115584946A CN 115584946 A CN115584946 A CN 115584946A CN 202211285606 A CN202211285606 A CN 202211285606A CN 115584946 A CN115584946 A CN 115584946A
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- CN
- China
- Prior art keywords
- pipe
- telescopic
- oil
- communicated
- pressure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Abstract
The invention discloses oil and gas well pressurized operation equipment, which belongs to the technical field of oil and gas field exploitation equipment and comprises a lifting frame, a sealing clamping piece, a telescopic cylinder and a first blowout preventer, wherein the sealing clamping piece, the telescopic cylinder and the first blowout preventer are sequentially communicated from top to bottom; one end of the first pressure relief pipe is communicated with the telescopic pipe, and the other end of the first pressure relief pipe extends out of the telescopic cylinder and is used for relieving the pressure inside the telescopic pipe. The oil gas is positioned in the telescopic pipe, the telescopic pipe is of an integrated structure, the problem of oil gas leakage is solved, and meanwhile, the inner wall of the telescopic cylinder can also provide support for the telescopic pipe, so that the telescopic pipe is prevented from being broken due to overlarge oil gas pressure.
Description
Technical Field
The invention relates to the technical field of oil and gas field exploitation equipment, in particular to equipment for lifting a tubular column under pressure, and specifically relates to oil and gas well operation equipment under pressure.
Background
In the maintenance and maintenance process from the initial exploration to the production to the later stage of the oil and gas field, almost all oil and gas layers are polluted by the reservoir and damaged in different degrees, such as yield reduction and the like, due to various construction operation modes. The traditional operation modes of drilling and repairing adopt the injection of a well control hydraulic well into the well or the open flow to reduce the pressure in the well. When the well killing hydraulic well is used for operation, if the pressure of a liquid column is too high, the loss of well killing liquid and the pollution of a production zone can be caused, and if the pressure of the liquid column is too low, the well killing liquid cannot be controlled, even the well is blocked, so that the yield of the oil-gas well is greatly reduced; the uncertainty of the pressure in the well can be caused by adopting the open flow depressurization operation, so that the local pressure of the stratum is reduced, the structure of a producing layer is damaged, the productivity of the oil-gas well is damaged, and great difficulty is brought to the later exploitation production or maintenance. According to data statistics, the well killing operation can cause the yield loss of nearly one fifth of an oil-gas well, the phenomena of incompressibility and poor pressure often occur in the well killing operation process, the well drilling and well repairing operation is complicated, and the difficulty of the well killing operation and the time required by construction are brought. The field application of the operation technology with pressure provides a new mode for solving the problem of the oil-gas reservoir.
The operation under pressure is an underground operation technology which uses special equipment to seal annular pressure between oil sleeves and uses an operation device under pressure to complete drilling and well repair under the condition of keeping pressure in a well. The annular pressure between the oil pipe sleeves is controlled through the blowout preventer stack, the pressure in the oil pipe is controlled through the oil pipe plug, and then the pipe column is controlled to move through the combination of the lifting hydraulic cylinder and the slip assembly. The technology does not need well killing and blowout, thereby protecting the exploitation potential and the yield of the oil-gas layer to the maximum extent. However, the existing oil and gas well pressurized operation technology is still in the initial stage of external equipment introduction and technology matching, the gas well pressurized operation equipment is not perfect, a plurality of dynamic sealing points are involved in the operation equipment of a moving pipe column, oil and gas leakage often occurs, and the problems of environmental pollution and damage to the body health of operators exist, for example, in the Chinese application patent CN201820930829.5, oil and gas are often leaked at the telescopic cylinder.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides oil-gas well pressurized operation equipment, which improves a telescopic cylinder part to avoid oil-gas leakage.
The specific scheme of the invention is as follows:
the oil and gas well pressurized operation equipment comprises a lifting frame, a sealing clamping piece, a telescopic cylinder and a first blowout preventer, wherein the sealing clamping piece, the telescopic cylinder and the first blowout preventer are sequentially communicated from top to bottom; one end of the first pressure relief pipe is communicated with the telescopic pipe, and the other end of the first pressure relief pipe extends out of the telescopic cylinder and is used for relieving the pressure inside the telescopic pipe.
As a specific embodiment of the present invention, the bellows is a bellows.
As a specific embodiment of the present invention, the extension tube is an elastic rubber tube.
In an embodiment of the invention, the lower part of the first blowout preventer is further communicated with a second blowout prevention valve.
For the invention, when the pressure of the well head is lower, the deformation amount of the extension pipe is not large, and the normal extension of the extension cylinder is not influenced, but when the pressure of the well head is higher, the outer wall of the extension pipe is tightly attached to the inner wall of the extension cylinder, when the extension cylinder moves, part of the extension pipe is clamped in the moving part of the extension cylinder, the moving resistance is increased, and even the extension pipe is broken to cause oil gas leakage. The invention can make the extension tube separate from the inner wall of the extension cylinder after the extension cylinder is pressurized by utilizing the pressurizing tube, thereby avoiding the abrasion of the extension tube.
Compared with the prior art, the invention has the following advantages:
the oil gas is positioned in the telescopic pipe, the telescopic pipe is of an integrated structure, the problem of oil gas leakage is solved, and meanwhile, the inner wall of the telescopic cylinder provides support for the telescopic pipe, so that the telescopic pipe is prevented from being excessively deformed and broken due to overlarge oil gas pressure.
Drawings
FIG. 1 is a schematic view of the whole structure of the oil and gas well pressurized operation equipment in the embodiment 1 of the invention;
FIG. 2 is a schematic view showing the structure of a telescopic cylinder according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the whole structure of the oil and gas well under-pressure operation equipment in the embodiment 2 of the invention;
FIG. 4 is a schematic structural view of a telescopic cylinder in embodiment 2 of the present invention;
in the figure, a sealing clamping piece 1, a telescopic cylinder 2, a first blowout preventer 3, a second blowout preventer 4, a lifting frame 5, a platform 6, a first pressure relief pipe 7, a telescopic pipe 8, a second pressure relief pipe 9 and a pressure charging pipe 10 are shown.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention
In the description of the present embodiment, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present embodiment and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
In the present embodiment, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
Referring to fig. 1 and 2, the oil and gas well pressurized operation equipment comprises a sealing clamping piece 1, a telescopic cylinder 2, a first blowout preventer 3, a second blowout preventer 4, a lifting frame 5, a platform 6, a first pressure relief pipe 7 and a telescopic pipe 8. Wherein, sealed holder 1, telescoping cylinder 2, first preventer 3, second preventer 4 connect gradually and form the space that supplies to hold the tubular column, and during the use, second preventer 4 is connected with the well head, and hoisting frame 5 is located platform 6, and sealed holder 1 is through a supporting beam and hoisting frame 5 fixed connection to can drive sealed holder 1 through hoisting frame 5 and reciprocate, and then drive the telescoping cylinder 2 and stretch out and draw back.
The telescopic pipe 8 is a flexible corrugated pipe and is positioned in the telescopic cylinder 2, the upper end of the telescopic pipe is communicated with the sealing clamping piece 1, and the lower end of the telescopic pipe is communicated with the first blowout preventer 3, so that oil gas positioned between a pipe column and a casing pipe is prevented from invading into the telescopic cylinder 2 and leaking from a dynamic sealing point of the telescopic cylinder 2. One end of the first pressure relief pipe 5 is communicated with the telescopic pipe 8, and the other end of the first pressure relief pipe extends out of the telescopic cylinder 2 and is used for relieving the pressure inside the pressure relief pipe 8.
In this embodiment, the first blowout preventer 3 and the second blowout preventer 4 are both used for sealing an annular cavity between a pipe string and a casing, the pipe string can freely move up and down after the first blowout preventer 3 and the second blowout preventer 4 are opened, and the sealing and clamping member 1 is used for clamping the pipe string and sealing a channel between the pipe string and the external environment.
When the tubular column needs to be lifted, the telescopic cylinder 2 is arranged in a contraction state, the sealing clamping piece 1 is closed to clamp the tubular column, the first blowout preventer 3 and the second blowout preventer 4 are opened, the telescopic cylinder 2 is lifted through the lifting frame 5 to enable the tubular column in a shaft to move upwards, the first blowout preventer 3 and the second blowout preventer 4 are closed after the tubular column moves upwards to the limit position, the first pressure relief pipe 7 is opened to discharge oil gas of the telescopic pipe 8, the first sealing clamping piece 1 is opened, the lifting frame 5 is utilized to drive the first sealing clamping piece 1 to move downwards, part of the tubular column extends into the external environment, and meanwhile, the telescopic cylinder is in the contraction state, and the tubular column can be further lifted.
When a tubular column needs to be lowered, the telescopic cylinder 2 is arranged in an extension state, the sealing clamping piece 1 is closed to clamp the tubular column, the first blowout preventer 3 and the second blowout preventer 4 are opened, the telescopic cylinder 2 is lowered through the lifting frame 5 to enable the tubular column in a shaft to move downwards, the first blowout preventer 3 and the second blowout preventer 4 are closed after the tubular column moves upwards to the limit position, the first pressure relief pipe 7 is opened to discharge oil gas of the telescopic pipe 8, the first sealing clamping piece 1 is opened, the lifting frame 5 is utilized to drive the first sealing clamping piece 1 to move upwards, the tubular column in a part of external environment enters the telescopic cylinder, and meanwhile, the telescopic cylinder is in the extension state and can be further lowered into the shaft.
Example 2
Referring to fig. 3 and 4, the oil and gas well pressurized operation equipment comprises a sealing clamping piece 1, a telescopic cylinder 2, a first blowout preventer 3, a second blowout preventer 4, a lifting frame 5, a platform 6, a first pressure relief pipe 7, a telescopic pipe 8, a second pressure relief pipe 9 and a pressure charging pipe 10. Wherein, sealed holder 1, telescoping cylinder 2, first preventer 3, second preventer 4 connect gradually and form the space that supplies to hold the tubular column, and during the use, second preventer 4 is connected with the well head, and hoisting frame 5 is located platform 6, and sealed holder 1 is through a supporting beam and hoisting frame 5 fixed connection to can drive sealed holder 1 through hoisting frame 5 and reciprocate, and then drive the telescoping cylinder 2 and stretch out and draw back.
The telescopic pipe 8 is an elastic rubber pipe and is positioned in the telescopic cylinder 2, the upper end of the telescopic pipe is communicated with the sealing clamping piece 1, and the lower end of the telescopic pipe is communicated with the first blowout preventer 3, so that oil gas positioned between a pipe column and a sleeve pipe is prevented from invading into the telescopic cylinder 2 and leaking from a dynamic sealing point of the telescopic cylinder 2. One end of the first pressure relief pipe 5 is communicated with the telescopic pipe 8, the other end of the first pressure relief pipe extends out of the telescopic cylinder 2 and is used for relieving the pressure inside the pressure relief pipe 8, and the second pressure relief pipe 9 is communicated with the inside of the telescopic cylinder 2 and is used for relieving the pressure of an annular cavity between the telescopic cylinder 2 and the telescopic rod 8; the pressurizing pipe 10 is communicated with the inside of the telescopic cylinder 2, is communicated with the gas booster and is used for pressurizing an annular cavity between the telescopic cylinder 2 and the telescopic rod 8 so as to enable the telescopic pipe 8 to be separated from the inner wall of the telescopic cylinder 2. This can avoid the telescopic pipe 2 and the telescopic cylinder inner wall contact the wearing and tearing that bring, also can reduce the telescopic resistance of telescopic cylinder 2.
When the pipe column needs to be lifted, the telescopic cylinder 2 is arranged in a contraction state, the sealing clamping piece 1 is closed to clamp the pipe column, the first blowout preventer 3 and the second blowout preventer 4 are opened, the pressurizing pipe 10 is opened to pressurize the annular cavity, the pressurizing pressure is greater than the pressure in the annular cavity between the shaft and the pipe column, the telescopic cylinder 2 is lifted through the lifting frame 5 to enable the pipe column in the shaft to move upwards, the first blowout preventer 3 and the second blowout preventer 4 are closed after the pipe column moves upwards to the limit position, the first pressure relief pipe 7 is opened to discharge oil gas of the telescopic pipe 8, the second pressure relief pipe is opened to relieve the pressure, the first sealing clamping piece 1 is opened, the lifting frame 5 is utilized to drive the first sealing clamping piece 1 to move downwards, part of the pipe column extends into the external environment, meanwhile, the telescopic cylinder is in the contraction state, and the pipe column can be further lifted.
When a pipe column needs to be lowered, the telescopic cylinder 2 is arranged in an extension state, the sealing clamping piece 1 is closed to clamp the pipe column, the first blowout preventer 3 and the second blowout preventer 4 are opened, the pressurizing pipe 10 is opened to pressurize the annular cavity, the pressurizing pressure is larger than the pressure in the annular cavity between the pipe column and the pipe column, the telescopic cylinder 2 is lowered through the lifting frame 5 to enable the pipe column in the pipe column to move downwards, the first blowout preventer 3 and the second blowout preventer 4 are closed after the pipe column moves upwards to the limit position, the first pressure relief pipe 7 is opened to discharge oil gas of the telescopic pipe 8, the second pressure relief pipe is opened to relieve the pressure, the first sealing clamping piece 1 is opened, the lifting frame 5 is utilized to drive the first sealing clamping piece 1 to move upwards, part of the pipe column in the external environment enters the telescopic cylinder, meanwhile, the telescopic cylinder is in the extension state, and the pipe column can be further lowered into the pipe column.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiments of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides an oil gas well area presses operation equipment, includes hoisting frame and from the top down sealed holder, telescoping cylinder, the first preventer that communicate in proper order, and the hoisting frame is used for driving the telescoping cylinder is flexible, its characterized in that still includes
The flexible telescopic pipe is positioned in the telescopic cylinder, the upper end of the telescopic pipe is communicated with the sealing clamping piece, and the lower end of the telescopic pipe is communicated with the first blowout preventer;
one end of the first pressure relief pipe is communicated with the telescopic pipe, and the other end of the first pressure relief pipe extends out of the telescopic cylinder.
2. An oil and gas well under pressure operation device according to claim 1, characterized in that the telescopic pipe is a corrugated pipe.
3. An oil and gas well under pressure operation device according to claim 1, characterized in that the telescopic pipe is an elastic rubber pipe.
4. The oil and gas well under-pressure operation equipment as claimed in claim 1, wherein the lower part of the first blowout preventer is further communicated with a second blowout preventer.
5. An oil and gas well under pressure operating device according to any one of claims 1 to 3, characterized by further comprising a charging pipe and a second pressure relief pipe; one end of the pressurizing pipe is communicated with an annular cavity between the telescopic cylinder and the telescopic pipe, and the other end of the pressurizing pipe is communicated with the fluid pressurizing equipment and is used for pressurizing the annular cavity; the second pressure relief pipe is communicated with an annular cavity between the telescopic cylinder and the telescopic pipe and used for relieving pressure of the annular cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211285606.5A CN115584946A (en) | 2022-10-20 | 2022-10-20 | Oil gas well presses operation equipment in area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211285606.5A CN115584946A (en) | 2022-10-20 | 2022-10-20 | Oil gas well presses operation equipment in area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115584946A true CN115584946A (en) | 2023-01-10 |
Family
ID=84779357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211285606.5A Pending CN115584946A (en) | 2022-10-20 | 2022-10-20 | Oil gas well presses operation equipment in area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115584946A (en) |
-
2022
- 2022-10-20 CN CN202211285606.5A patent/CN115584946A/en active Pending
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