CN112627742A - Controllable layered oil production/testing process pipe column - Google Patents
Controllable layered oil production/testing process pipe column Download PDFInfo
- Publication number
- CN112627742A CN112627742A CN202011464372.1A CN202011464372A CN112627742A CN 112627742 A CN112627742 A CN 112627742A CN 202011464372 A CN202011464372 A CN 202011464372A CN 112627742 A CN112627742 A CN 112627742A
- Authority
- CN
- China
- Prior art keywords
- control switch
- mechanical control
- packer
- pipe column
- oil
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
Abstract
The invention discloses a controllable layered oil production/test process pipe column, wherein the whole set of process pipe column is arranged in a casing pipe, and an inner layer pipe column is formed by sequentially connecting a tool release, a first packer, a first mechanical control switch, a second packer, a second mechanical control switch, a third packer, a third mechanical control switch and a guide plug through an oil pipe. The invention has simple structure and reasonable design; during oil extraction operation, the functions of layered oil extraction, layered oil testing, layered water injection and the like can be realized by one string. When in use, the mechanical control switch is in stepless limitation and can be controlled randomly and frequently; simple operation, safety and reliability, and greatly shortens the construction period.
Description
Technical Field
The invention relates to an oil extraction/testing process pipe column, in particular to a controllable layered oil extraction/testing process pipe column.
Background
After years of development and production of oil fields at home and abroad, various electric pump well combined production and separate production process technologies are formed, and a good application effect is achieved. However, the layered oil extraction technology of the electric pump well, such as the Y-pipe electric pump oil extraction technology, the common pipe column releasing electric pump oil extraction technology and the like, controls the production and closing of each layer by switching the multistage sliding sleeves through steel wires or cables, is inconvenient in layer changing operation, high in equipment configuration requirement and complex in pipe column structure, and is only suitable for oil wells with well deviation less than 45 degrees, 7 degrees and 9-5/8 degrees. Therefore, the technical research of the multilayer layered mining process suitable for the characteristics of the desert oil field needs to be developed, the one-time multilayer well completion and pump-down layered production are realized, the purposes of cost reduction and efficiency improvement are achieved, the operation amount is reduced, the operation time is shortened, and the production timeliness of the oil field is improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a controllable layered mining/oil testing process pipe column, which provides conditions for flexibly controlling a mining position and mining time in a well and further improving the recovery ratio and can also be used for oil testing operation.
In order to solve the technical problems, the invention adopts the technical scheme that: a controllable layered oil production/test process pipe column is characterized in that a whole set of process pipe column is arranged in a sleeve, and an inner layer pipe column is formed by sequentially connecting a tool release, a first packer, a first mechanical control switch, a second packer, a second mechanical control switch, a third packer, a third mechanical control switch and a guide plug through an oil pipe.
The first packer, the first mechanical control switch, the second packer, the second mechanical control switch, the third packer, the third mechanical control switch and the guide plug are respectively formed by connecting oil pipes through threads.
And the first mechanical control switch, the second mechanical control switch and the third mechanical control switch are respectively provided with an overflowing hole, and the switches of the mechanical control switches are controlled through pressure change of the overflowing holes.
The first mechanical control switch, the second mechanical control switch and the third mechanical control switch can be set to be in an opening or closing state in an initial state.
The invention has the beneficial effects that: the process pipe column is mainly applied to layered oil reservoirs and multiple sets of oil-bearing layers, the differences of the physical properties, pressure systems and fluid properties of the reservoirs of different layers are large, and the oil reservoirs needing layered exploitation can be used for realizing underground flexible control of exploitation positions and exploitation time by using the casing string, so that the recovery ratio is further improved. The invention has simple structure and reasonable design; during oil extraction operation, the functions of layered oil extraction, layered oil testing, layered water injection and the like can be realized by one string. When in use, the mechanical control switch is in stepless limitation and can be controlled randomly and frequently; simple operation, safety and reliability, and greatly shortens the construction period.
Drawings
FIG. 1 is a schematic structural diagram of a controllable separate-zone production/testing process string according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of 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 be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, the whole set of the controllable layered oil production/testing process pipe column is arranged in a casing 10, and the inner layer pipe column is formed by sequentially connecting a tool release 1, a first packer 2, a first mechanical control switch 4, a second packer 5, a second mechanical control switch 6, a third packer 7, a third mechanical control switch 8 and a guide plug 9 through an oil pipe 3.
The first packer 2, the first mechanical control switch 4, the second packer 5, the second mechanical control switch 6, the third packer 7, the third mechanical control switch 8 and the guide plug 9 are all formed by connecting oil pipes 3 through threads.
And the first mechanical control switch 4, the second mechanical control switch 6 and the third mechanical control switch 8 are respectively provided with an overflowing hole, and the opening and closing of the mechanical control switches are controlled through the pressure change of the overflowing holes.
The first mechanical control switch 4, the second mechanical control switch 6 and the third mechanical control switch 8 can be set to be in an open state or a closed state in an initial state.
After the controllable layered oil production/test process pipe column is sent to a designed position, the ground is pressed, the packer is set and then is separated at the releasing position of a sending tool, and the controllable layered oil production/test process pipe column is left at the designed position.
The first mechanical control switch 4, the second mechanical control switch 6 and the third mechanical control switch 8 can be set to be in an on or off state in an initial state, and the state change after the initial setting and the pressing is shown in table 1; the on-off of the first mechanical control switch 4, the second mechanical control switch 6 and the third mechanical control switch 8 can be controlled through the pressure change of the overflowing hole.
TABLE 1 control switch initial setup and post-impact state change
The initial states of the first mechanical control switch 4, the second mechanical control switch 6 and the third mechanical control switch 8 are set on the ground.
Connecting the pipe column, putting the pipe column into the casing, and mechanically setting the first packer 2, the second packer 5 and the third packer 7.
And (3) according to the mining requirements, pressing the oil pipe, changing the initial states of the mechanical first mechanical control switch 4, the mechanical second control switch 6 and the mechanical third control switch 8, and enabling the mechanical first mechanical control switch, the mechanical second mechanical control switch and the mechanical third control switch to be in an open state or a closed state, so that the corresponding layer is mined.
After the switch is set, the pressure is applied, the releasing and feeding tool 1 is released, and the feeding pipe column is lifted out.
When the mining layer position needs to be changed, the first mechanical control switch 4, the second mechanical control switch 6 and the third mechanical control switch 8 are turned on or off through pressure control by the tie-back releasing sending tool releasing 1 until the design requirements are met.
In summary, the disclosure of the present invention is not limited to the above-mentioned embodiments, and persons skilled in the art can easily set forth other embodiments within the technical teaching of the present invention, but such embodiments are included in the scope of the present invention.
Claims (4)
1. A controllable layered oil production/test process pipe column is characterized in that the whole process pipe column is arranged in a sleeve (10), and an inner layer pipe column is formed by sequentially connecting a tool release (1), a first packer (2), a first mechanical control switch (4), a second packer (5), a second mechanical control switch (6), a third packer (7), a third mechanical control switch (8) and a guide plug (9) through an oil pipe (3).
2. The controllable layered production/testing process pipe string according to claim 1, wherein the first packer (2), the first mechanical control switch (4), the second packer (5), the second mechanical control switch (6), the third packer (7), the third mechanical control switch (8) and the guide plug (9) are respectively formed by connecting oil pipes (3) in a threaded manner.
3. The controllable layered oil production/testing process pipe column according to claim 1, wherein the first mechanical control switch (4), the second mechanical control switch (6) and the third mechanical control switch (8) are respectively provided with an overflowing hole, and the opening and closing of the mechanical control switches are controlled through the pressure change of the overflowing holes.
4. A controllable layered production/testing process string according to claim 3, characterized in that the first mechanical control switch (4), the second mechanical control switch (6) and the third mechanical control switch (8) are set to be on or off in an initial state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464372.1A CN112627742A (en) | 2020-12-11 | 2020-12-11 | Controllable layered oil production/testing process pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464372.1A CN112627742A (en) | 2020-12-11 | 2020-12-11 | Controllable layered oil production/testing process pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112627742A true CN112627742A (en) | 2021-04-09 |
Family
ID=75312445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011464372.1A Pending CN112627742A (en) | 2020-12-11 | 2020-12-11 | Controllable layered oil production/testing process pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112627742A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2567338Y (en) * | 2002-08-07 | 2003-08-20 | 中国石化胜利油田有限公司采油工艺研究院 | Layer switch device |
| US20060060352A1 (en) * | 2004-09-22 | 2006-03-23 | Vidrine William L | Sand control completion having smart well capability and method for use of same |
| US8857518B1 (en) * | 2012-09-26 | 2014-10-14 | Halliburton Energy Services, Inc. | Single trip multi-zone completion systems and methods |
| CN205532523U (en) * | 2016-03-24 | 2016-08-31 | 中国石油天然气股份有限公司 | Layered oil exploitation tubular column with votage control switch |
-
2020
- 2020-12-11 CN CN202011464372.1A patent/CN112627742A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2567338Y (en) * | 2002-08-07 | 2003-08-20 | 中国石化胜利油田有限公司采油工艺研究院 | Layer switch device |
| US20060060352A1 (en) * | 2004-09-22 | 2006-03-23 | Vidrine William L | Sand control completion having smart well capability and method for use of same |
| US8857518B1 (en) * | 2012-09-26 | 2014-10-14 | Halliburton Energy Services, Inc. | Single trip multi-zone completion systems and methods |
| CN205532523U (en) * | 2016-03-24 | 2016-08-31 | 中国石油天然气股份有限公司 | Layered oil exploitation tubular column with votage control switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5343949A (en) | Isolation washpipe for earth well completions and method for use in gravel packing a well | |
| CN103321628B (en) | Intelligent electric switching sliding sleeve | |
| CN109356899B (en) | Underground hydraulic system with three pipelines controlling six-layer sliding sleeve | |
| CN203685147U (en) | Offshore separate-layer sand control, separate-layer oil production and separate-layer testing integrated pipe column | |
| CN108625830A (en) | Ball-throwing type selective sand control process pipe string and its method | |
| CN108825182B (en) | Mechanical intelligent well underground decoding device and method | |
| CN106761604B (en) | A kind of high angle hole intelligence separate-layer production string and its operational method | |
| CN201620853U (en) | Constant-pressure gasproof pipe column of multilayer mining single pump | |
| CN104343417A (en) | Six-opening switch sliding bush | |
| CN103806888A (en) | Downhole infinite level digital control fracture sliding sleeve | |
| RU2521243C1 (en) | Selective multistring packer module | |
| CN203050662U (en) | Hydraulic sliding sleeve switch | |
| CN112627742A (en) | Controllable layered oil production/testing process pipe column | |
| CN207268169U (en) | A kind of efficiently speed bores bridge plug | |
| CN201358754Y (en) | Horizontal well hydraulic layer-change switch | |
| CN114482953A (en) | Offshore heavy oil layering viscosity reduction cold recovery pipe column and method | |
| CN102817597B (en) | Three-layer insertion pipe mechanical water exploration and plugging method and water exploration and plugging pipe column | |
| CN111927392A (en) | Hydraulic control type switch sliding sleeve | |
| CN204960903U (en) | Multistage bridging plug perforation of single core grafting allies oneself with makes self -align perforation device | |
| CN109138854A (en) | A kind of pressure break pipe nipple and the fracturing string comprising it | |
| CN112696172B (en) | Electro-hydraulic compound control underground decoding device and decoding method thereof | |
| CN115653555A (en) | Resettable separate-layer sectional pressure flooding water injection process pipe column and method | |
| CN103883300A (en) | Multistage fracturing and exploitation control method | |
| CN203114261U (en) | Supporting type high-pressure layering water injection tubular column | |
| CN203321417U (en) | Slip-free facture packer for oil and gas fields |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210409 |
|
| RJ01 | Rejection of invention patent application after publication |