CN111827983B - Water finding method and device for cased well completion horizontal well - Google Patents
Water finding method and device for cased well completion horizontal well Download PDFInfo
- Publication number
- CN111827983B CN111827983B CN202010747159.5A CN202010747159A CN111827983B CN 111827983 B CN111827983 B CN 111827983B CN 202010747159 A CN202010747159 A CN 202010747159A CN 111827983 B CN111827983 B CN 111827983B
- Authority
- CN
- China
- Prior art keywords
- water
- sliding sleeve
- finding
- valve
- horizontal well
- 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.)
- Active
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
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
-
- 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
Abstract
The invention provides a water finding method and device for a cased well completion horizontal well. The water finding method for the cased well completion horizontal well comprises the following steps: step S1: placing a water finding device for a cased well completion horizontal well in the horizontal well; step S2: starting an oil pump, detecting and recording water content data of the current oil liquid; step S3: starting a pressurizing device, conveying a valve ball of a water finding device for the cased well completion horizontal well into an N-th water finding valve of the water finding device for the cased well completion horizontal well so as to block a bypass channel of the N-th water finding valve, and enabling the valve ball to pass through the N-th water finding valve, wherein N is a positive integer; step S4: restarting the oil pump, detecting and recording the water content data of the current oil liquid; and (3) repeating the steps S3 to S4, and sequentially increasing the number of N by one until all the oil pipes are detected. The invention solves the problem of high water-finding operation cost of the low-liquid-yield well in the prior art.
Description
Technical Field
The invention relates to the technical field of petroleum engineering, in particular to a water finding method and device for a cased well completion horizontal well.
Background
The horizontal well is a well completion mode for development of low-permeability and ultra-low-permeability reservoirs. For an oil reservoir with bottom water, the fracturing is easy to communicate with the bottom water to cause water to be discharged from a certain perforation section, so that the whole well production fluid has high water content, the horizontal well section is not fully used, and the development benefit is influenced.
The current technology for water exploration of a cased well completion horizontal well is mainly divided into the following two types.
For the oil well with high fluid production amount of the self-injection well, various testing methods for water exploration are available at home and abroad at present, such as Flow Scanne system of Schlenz, BHGE PhaseView of Beckhous TM The technology of optical fiber water exploration of X system, advanced Measuring System (AMS) of Harbert and FOTECH mainly adopts neutron oxygen activation test technology in China in combination with logging data to conduct water exploration. The method can directly or indirectly obtain indexes such as liquid yield and water content of each section of the horizontal well, but has the defects of long water searching period and high cost.
For the water finding method of the manually lifted horizontal well, a coiled tubing is generally adopted. For the stopped oil well, a continuous oil pipe is mainly used with a testing instrument, and the ground adopts a gas lift process to cooperate with the horizontal well section by section water searching operation. Also disclosed is a method for testing water content by using a coiled tubing with a downhole sampler. The method is mainly suitable for wells with higher single well liquid production amount, and is not suitable for well conditions with daily liquid production amount of 15 tons or less.
Disclosure of Invention
The invention mainly aims to provide a water searching method and device for a cased well completion horizontal well, which are used for solving the problem of high water searching operation cost of a low-yield well in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a water exploration method for a cased-hole completion horizontal well, the water exploration method for the cased-hole completion horizontal well comprising the steps of: step S1: placing a water finding device for a cased well completion horizontal well in the horizontal well; step S2: starting an oil pump, detecting and recording water content data of the current oil liquid; step S3: starting a pressurizing device, conveying a valve ball of a water finding device for the cased well completion horizontal well into an N-th water finding valve of the water finding device for the cased well completion horizontal well so as to block a bypass channel of the N-th water finding valve, and enabling the valve ball to pass through the N-th water finding valve, wherein N is a positive integer; step S4: restarting the oil pump, detecting and recording the water content data of the current oil liquid; and (3) repeating the steps S3 to S4, and sequentially increasing the number of N by one until all the oil pipes are detected.
According to another aspect of the present invention, there is provided a water-finding device for a cased-hole completion horizontal well, employing the water-finding method for a cased-hole completion horizontal well as described above, the water-finding device for a cased-hole completion horizontal well comprising: finding a water valve; the oil pipes are sequentially connected through the water finding valves; the oil pump is arranged at the end part of the oil pipe at the wellhead; the pressurizing device is arranged at an oil pipe at the wellhead, and second joints of the plurality of water finding valves are close to the wellhead relative to first joints of the water finding valves; the packers are arranged on each oil pipe; the valve ball can enter the expansion ball seat of the water finding valve under the action of the pressurizing device, and the sliding sleeve of the water finding valve moves towards the direction of the central tube to block the bypass passage of the water finding valve.
Further, the water finding valve includes: the two ends of the outer cylinder are provided with a first joint and a second joint; the central tube is positioned in the outer cylinder and is communicated with the first joint, and a bypass passage is formed between the central tube and the outer cylinder; the sliding sleeve is arranged in the outer cylinder and is movably arranged between the central tube and the second joint, the outer wall surface of the sliding sleeve is attached to the inner wall surface of the outer cylinder, an expansion groove is formed in the inner wall surface of the sliding sleeve, the sliding sleeve can block the bypass channel when moving to one side of the central tube, and a bypass hole is formed in the wall of the outer cylinder at the position of the bypass channel; the expansion ball seat is arranged in the sliding sleeve in a sliding manner and can slide into the expansion groove, and the outer wall of the expansion ball seat is attached to the inner wall of the sliding sleeve; the unidirectional pressure-bearing assembly is arranged at the bypass channel to unidirectionally block the bypass channel, so that liquid in the outer cylinder is prevented from flowing to the outside of the outer cylinder through the bypass hole.
Further, the limiting step is arranged at one end of the sliding sleeve, which faces the central tube, and when the sliding sleeve slides towards the central tube, the end part of the central tube can be abutted to the limiting step.
Further, the unidirectional bearing assembly is positioned between the sliding sleeve and the bypass hole.
Further, the unidirectional bearing assembly includes: the inner ring of the leather cup is sleeved on the outer wall of the central tube, the outer ring of the leather cup is attached to the inner wall of the outer cylinder, and the opening of the leather cup can only be opened towards the direction of the sliding sleeve; and the clamping ring is used for fixing the leather cup on the outer wall of the central tube.
Further, the water finding valve further comprises a shearing pin, and the shearing pin is used for fixing the sliding sleeve on the inner wall of the outer cylinder.
Further, the water finding valve further comprises: the first sealing piece is arranged on the outer wall surface of the sliding sleeve and is used for sealing the contact part of the sliding sleeve and the outer cylinder; and/or a second sealing element, which is arranged on the inner wall surface of the sliding sleeve and is used for sealing the contact part of the sliding sleeve and the central tube.
Further, the water finding device for the cased well completion horizontal well further comprises a setting ball seat, and the oil pipe at the tail end is provided with the setting ball seat to accommodate a valve ball.
Further, the water-finding device for the cased well completion horizontal well further comprises: the screen pipe is communicated with the setting ball seat; and plugging the end part of the screen pipe by the plug.
By using the technical scheme of the invention, firstly, the water finding device for the casing well completion horizontal well is placed in the horizontal well, the horizontal well is reinforced by the casing, the oil pump is started, the water content data of the current oil liquid is detected and recorded, then the pressurizing device is started to press the oil pipe, the valve ball can enter the first water finding valve under the action of the pressurizing device, the side flow channel of the first water finding valve is blocked, after the side flow channel is blocked, the liquid at the position of the oil pipe cannot enter the first water finding valve, the oil pump is started again to obtain the current water content data, and then the valve ball is made to enter the second water finding valve, the third water finding valve and the Nth water finding valve by analogy, so that the water content condition of other sections except the first section in the horizontal well can be known, the data is provided for later water isolation, the oil pipe is not required to be repeatedly moved in the operation process, and the cost of water finding operation is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 illustrates a flow chart of a water exploration method for a cased-hole horizontal well in accordance with an embodiment of the present invention; and
FIG. 2 shows a schematic of the water exploration device for cased-hole horizontal wells according to one embodiment of the present invention;
fig. 3 shows a schematic semi-sectional view of the water-finding valve in fig. 2.
Wherein the above figures include the following reference numerals:
10. an oil pipe; 20. an oil pump; 30. a pressurizing device; 40. a packer; 50. finding a water valve; 51. an outer cylinder; 511. a first joint; 512. a second joint; 513. a bypass flow passage; 514. a bypass orifice; 52. a central tube; 53. a sliding sleeve; 531. an expansion tank; 532. a first seal; 533. a second seal; 534. a limit step; 54. expanding the tee; 55. a unidirectional bearing assembly; 551. a leather cup; 552. a clasp; 56. shearing pins; 60. setting ball seat; 70. a screen pipe; 80. plugging; 90. a horizontal well; 100. a sleeve.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present invention.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
The invention provides a water exploration method and device for a casing completion horizontal well, which are used for solving the problem of high water exploration operation cost of a low-yield well in the prior art. The water searching device for the cased well completion horizontal well adopts the water searching method for the cased well completion horizontal well.
As shown in fig. 1, the water exploration method for the cased-hole completion horizontal well comprises the following steps: step S1: placing a water-finding device for a cased-hole completion horizontal well in the horizontal well 90; step S2: starting the oil pump 20, detecting and recording the water content data of the current oil; step S3: starting the pressurizing device 30, and conveying a valve ball of a water-finding device for the cased well completion horizontal well into an Nth water-finding valve 50 of the water-finding device for the cased well completion horizontal well to block a bypass channel 513 of the Nth water-finding valve 50, wherein the valve ball passes through the Nth water-finding valve 50, and N is a positive integer; step S4: restarting the oil pump 20, detecting and recording the water content data of the current oil; and repeating the steps S3 to S4, and sequentially increasing the number N by one until all the oil pipes 10 are detected.
In the process of the detection, in the above steps, the water-finding device for the cased well completion is first placed in the horizontal well 90, and the horizontal well 90 is reinforced with the casing 100. Starting the oil pump 20, detecting and recording the water content data of the current oil; then, the pressurizing device 30 is started to press the oil pipe, the valve ball can enter the first water finding valve 50 under the action of the pressurizing device 30, the bypass channel 513 of the first water finding valve 50 is blocked, after the bypass channel 513 is blocked, liquid at the position of the section of oil pipe 10 cannot enter the first water finding valve 50, and the oil pump 20 is started again to obtain current water content data. And so on to make the valve ball enter the second water finding valve 50, the third water finding valve 50 and the Nth water finding valve, so that the water containing condition of other sections except the first section in the horizontal well 90 can be known, and data can be provided for later water isolation. The oil pipe 10 does not need to be repeatedly moved in the operation process, so that the cost of water searching operation is reduced.
As shown in fig. 2, the water-finding device for the cased-hole completion horizontal well comprises a water-finding valve 50, a plurality of oil pipes 10, an oil pump 20, a pressurizing device 30, a plurality of packers 40 and a valve ball, wherein the plurality of oil pipes 10 are sequentially connected through the plurality of water-finding valves 50; the oil pump 20 is arranged at the end of the oil pipe 10 at the wellhead; the pressurizing device 30 is arranged at the oil pipe 10 at the wellhead, and the second joints 512 of the plurality of water finding valves 50 are close to the wellhead relative to the first joints 511 of the water finding valves 50; a packer 40 is set on each section of tubing 10; the valve ball can enter the expansion ball seat 54 of the water finding valve 50 under the action of the pressurizing device 30, and the sliding sleeve 53 of the water finding valve 50 moves towards the central tube 52 to block the bypass passage 513 of the water finding valve 50.
In this embodiment, the oil pump 20 is started to detect the water content in this state, the pressurizing device 30 is started, the valve ball can enter the expansion ball seat 54 of the water finding valve 50 under the action of the pressurizing device 30, the sliding sleeve 53 of the water finding valve 50 moves towards the central tube 52 to block the bypass channel 513 of the water finding valve 50, after the bypass channel 513 is blocked, the liquid at the position of the section of oil pipe 10 cannot enter the water finding valve 50, and at this time, the oil pump 20 is started again, and the water content data of the current oil is detected and recorded. The pressurizing device 30 is started again, the valve ball can seal the next water finding valve 50, and the oil pump 20 is started again to obtain the current water content data. By analogy, the water containing condition of each position in the horizontal well 90 can be known, the oil pipe 10 does not need to be repeatedly moved in the operation process, and the cost of water finding operation is reduced.
As shown in fig. 2 to 3, the water-finding valve comprises an outer cylinder 51, a central tube 52, a sliding sleeve 53, an expansion ball seat 54 and a unidirectional pressure-bearing assembly 55, wherein a first connector 511 and a second connector 512 are arranged at two ends of the outer cylinder 51; the central tube 52 is positioned in the outer cylinder 51, the central tube 52 is communicated with the first joint 511, and a bypass channel 513 is formed between the central tube 52 and the outer cylinder 51; the sliding sleeve 53 is arranged in the outer cylinder 51 and is movably arranged between the central tube 52 and the second joint 512, the outer wall surface of the sliding sleeve 53 is attached to the inner wall surface of the outer cylinder 51, an expansion groove 531 is formed in the inner wall surface of the sliding sleeve 53, the sliding sleeve 53 can block the bypass channel 513 when moving to one side of the central tube 52, and a bypass hole 514 is formed in the wall of the outer cylinder 51 at the position of the bypass channel 513; the expansion ball seat 54 is slidably arranged in the sliding sleeve 53 and can slide into the expansion groove 531, and the outer wall of the expansion ball seat 54 is attached to the inner wall of the sliding sleeve 53; the one-way pressure-receiving member 55 is provided at the bypass passage 513 to one-way block the bypass passage 513, preventing the liquid in the outer tub 51 from flowing to the outside of the outer tub 51 through the bypass hole 514.
In this embodiment, a bypass channel 513 is formed between the central tube 52 and the outer cylinder 51, and a unidirectional pressure-bearing assembly 55 is disposed at the bypass channel 513 to unidirectionally block the bypass channel 513, so as to prevent the liquid in the outer cylinder 51 from flowing to the outside of the outer cylinder 51 through the bypass hole 514. The plurality of oil pipes 10 are sequentially connected through the plurality of water finding valves 50, the pressurizing device 30 is started, the valve ball can enter the expansion ball seat 54 of the water finding valve 50 under the action of the pressurizing device 30, the sliding sleeve 53 of the water finding valve 50 moves towards the central pipe 52 to block the bypass channel 513 of the water finding valve 50, after the bypass channel 513 is blocked, liquid at the position of the section of oil pipe 10 cannot enter the water finding valve 50, the oil pump 20 is started at the moment, and the water content data of the current oil liquid is detected and recorded. The pressurizing device 30 is started again, the valve ball can seal the next water finding valve 50, and the oil pump 20 is started again to obtain the current water content data. By analogy, the water containing condition of each position in the horizontal well 90 can be known, the oil pipe 10 does not need to be repeatedly moved in the operation process, and the cost of water finding operation is reduced.
In this embodiment, a locking structure is designed between the sliding sleeve 53 of the water finding valve 50 and the central tube 52, the locking structure may be a clamping structure, the valve ball drives the sliding sleeve 53 to move towards the central tube 52, and when the sliding sleeve 53 seals the bypass channel 513, the central tube 52 is clamped in the sliding sleeve 53, so as to prevent incomplete closing caused by too high differential pressure between the ground layers.
As shown in fig. 2 to 3, the slide bush 53 has a stopper step 534 provided at an end facing the central tube 52, and when the slide bush 53 slides toward the central tube 52, the end of the central tube 52 can abut against the stopper step 534. In this embodiment, when the pressurizing device 30 presses into the oil pipe 10, the valve ball will enter the expansion ball seat 54 of the water finding valve 50, and the sliding sleeve 53 of the water finding valve 50 will move toward the central pipe 52 to block the bypass channel 513 of the water finding valve 50. When the bypass channel 513 is blocked, the limiting step 534 can limit the sliding sleeve 53 to move towards the central tube 52, and at this time, the expansion ball seat 54 moves relative to the sliding sleeve 53 under the pushing of the valve ball, and enters the expansion groove 531, the inner diameter of the expansion ball seat 54 becomes larger, and the valve ball passes through the water finding valve 50.
As shown in fig. 2-3, a unidirectional bearing assembly 55 is positioned between the sliding sleeve 53 and the bypass bore 514. The unidirectional pressure-bearing assembly 55 comprises a leather cup 551 and a clamping ring 552, wherein the inner ring of the leather cup 551 is sleeved on the outer wall of the central tube 52, the outer ring of the leather cup 551 is attached to the inner wall of the outer tube 51, and an opening of the leather cup 551 can only be opened towards the direction of the sliding sleeve 53; a snap ring 552 secures the cup 551 to the outer wall of the center tube 52.
In this embodiment, the inner ring of the cup 551 is sleeved on the outer wall of the central tube 52, the outer ring of the cup 551 is attached to the inner wall of the outer tube 51, and the opening of the cup 551 can only be opened towards the sliding sleeve 53, so that the liquid in the outer tube 51 flows to the outside of the outer tube 51 through the bypass hole 514, and the liquid outside the outer tube 51 can enter the outer tube 51. The leather cup 551 is fixed by adopting the clamping ring 552, so that later replacement is convenient.
As shown in fig. 3, the water finding valve 50 further includes a shear pin 56, and the shear pin 56 fixes the sliding sleeve 53 on the inner wall of the outer cylinder 51. In this embodiment, the shear pin 56 can fix the sliding sleeve 53 on the inner wall of the outer cylinder 51, so as to prevent the sliding sleeve 53 from sliding randomly in the outer cylinder 51, and the sliding sleeve 53 can overcome the force of the shear pin 56 only under the pushing of the valve ball and move towards the central tube 52 to block the bypass channel 513 of the water finding valve 50.
As shown in fig. 3, the water finding valve 50 further includes a first sealing member 532 and a second sealing member 533, the first sealing member 532 being disposed on an outer wall surface of the sliding sleeve 53 for sealing a contact portion of the sliding sleeve 53 with the outer cylinder 51; a second seal 533 is provided on an inner wall surface of the sliding sleeve 53 for sealing a contact portion of the sliding sleeve 53 with the center tube 52.
In this embodiment, when the sliding sleeve 53 moves toward the central tube 52 to block the bypass channel 513 of the water finding valve 50, the end of the central tube 52 will abut against the limiting step 534, and at this time, the end of the central tube 52 will also be inserted into the sliding sleeve 53, the second sealing member 533 can seal the contact portion between the sliding sleeve 53 and the central tube 52, and the first sealing member 532 seals the contact portion between the sliding sleeve 53 and the outer tube 51, so as to achieve the purpose of blocking the bypass channel 513.
In this embodiment, the packer 40 may adopt a valve ball deblocking structure, so that the packer 40 may be deblocking at the same time when the water finding valve 50 is closed, and the packing element, slips, etc. of the packer 40 may adopt soluble materials.
As shown in fig. 2, the water-finding device for the cased-hole completion horizontal well further includes a setting ball seat 60, and the oil pipe 10 at the tail end is provided with the setting ball seat 60 to receive a valve ball. In this embodiment, the oil pipe 10 at the tail end is provided with the setting ball seat 60, when the valve ball passes through the last water finding valve 50, the valve ball can enter the setting ball seat 60, the setting ball seat 60 can limit the valve ball, and after the water finding device is used, the valve ball can be taken out from the setting ball seat 60 for convenient secondary use.
As shown in fig. 2, the water-finding device for the cased-hole completion horizontal well further comprises a screen 70 and a plug 80, wherein the screen 70 is communicated with the setting ball seat 60; the plug 80 plugs the end of the screen 70. In this embodiment, in the process of starting the oil pump 20 to pump oil for detection, the oil can enter the oil pipe from the inside of the screen pipe 70, and the screen pipe 70 can play a certain screening role on the oil entering the oil pipe, so as to prevent large impurities from blocking the oil pipe. The plug plugs the end of the screen 70 so that oil from this section can only enter the tubing through the screen 70.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A water exploration device for a cased hole completion horizontal well, the water exploration device for a cased hole completion horizontal well comprising:
a water finding valve (50);
the oil pipes (10) are sequentially connected through the water finding valves (50);
-an oil pump (20), said pump (20) being arranged at the end of said oil pipe (10) at the wellhead;
-a pressurizing device (30), said pressurizing device (30) being arranged at said oil pipe (10) at the wellhead, a second joint (512) of a plurality of said water valves (50) being close to said wellhead with respect to a first joint (511) of said water valves (50);
a plurality of packers (40), the packers (40) being disposed on each section of the tubing (10);
a valve ball which can enter an expansion ball seat (54) of the water finding valve (50) under the action of the pressurizing device (30) and enables a sliding sleeve (53) of the water finding valve (50) to move towards a central pipe (52) so as to block a bypass channel (513) of the water finding valve (50);
the water-finding valve (50) comprises:
an outer cylinder (51), wherein a first joint (511) and a second joint (512) are arranged at two ends of the outer cylinder (51);
a central tube (52), wherein the central tube (52) is positioned in the outer cylinder (51), the central tube (52) is communicated with the first joint (511), and a bypass channel (513) is formed between the central tube (52) and the outer cylinder (51);
the sliding sleeve (53), the sliding sleeve (53) is arranged in the outer cylinder (51) and is movably arranged between the central tube (52) and the second joint (512), the outer wall surface of the sliding sleeve (53) is attached to the inner wall surface of the outer cylinder (51), an expansion groove (531) is formed in the inner wall surface of the sliding sleeve (53), the side flow channel (513) can be blocked when the sliding sleeve (53) moves to one side of the central tube (52), and a side flow hole (514) is formed in the cylinder wall of the outer cylinder (51) at the position of the side flow channel (513);
the expansion ball seat (54) is arranged in the sliding sleeve (53) in a sliding manner and can slide into the expansion groove (531), and the outer wall of the expansion ball seat (54) is attached to the inner wall of the sliding sleeve (53);
a unidirectional pressure-bearing assembly (55), wherein the unidirectional pressure-bearing assembly (55) is arranged at the bypass channel (513) to unidirectionally block the bypass channel (513) so as to prevent the liquid in the outer cylinder (51) from flowing to the outside of the outer cylinder (51) through the bypass hole (514).
2. The water exploration device for a cased hole completion horizontal well according to claim 1, wherein the sliding sleeve (53) is provided with a limiting step (534) towards one end of the central tube (52), and when the sliding sleeve (53) slides towards the central tube (52), the end of the central tube (52) can be abutted against the limiting step (534).
3. The water exploration device for cased hole completion horizontal well according to claim 1, wherein said unidirectional bearing assembly (55) is located between said sliding sleeve (53) and said bypass hole (514).
4. A water exploration device for a cased hole completion horizontal well according to claim 3, characterized in that said unidirectional bearing assembly (55) comprises:
the inner ring of the leather cup (551) is sleeved on the outer wall of the central tube (52), the outer ring of the leather cup (551) is attached to the inner wall of the outer tube (51), and an opening of the leather cup (551) can only be opened towards the direction of the sliding sleeve (53);
and the clamping ring (552), wherein the clamping ring (552) is used for fixing the leather cup (551) on the outer wall of the central tube (52).
5. The water-finding device for cased-hole completion horizontal well according to claim 1, wherein the water-finding valve (50) further comprises a shear pin (56), the shear pin (56) fixing the sliding sleeve (53) to the inner wall of the outer barrel (51).
6. The water-finding apparatus for a cased-hole completion horizontal well according to claim 1, wherein the water-finding valve (50) further comprises:
a first seal (532) provided on an outer wall surface of the sliding sleeve (53) for sealing a contact portion of the sliding sleeve (53) and the outer cylinder (51); and/or
And a second seal (533) provided on an inner wall surface of the sliding sleeve (53) for sealing a contact portion between the sliding sleeve (53) and the center tube (52).
7. The water exploration device for cased hole completion horizontal well according to claim 1, further comprising a setting ball seat (60), wherein said oil pipe (10) at the tail end is provided with said setting ball seat (60) to accommodate said valve ball.
8. The water exploration device for a cased hole completion horizontal well of claim 7, further comprising:
-a screen (70), the screen (70) being in communication with the setting ball seat (60);
-a plug (80), the plug (80) plugging an end of the screen (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747159.5A CN111827983B (en) | 2020-07-29 | 2020-07-29 | Water finding method and device for cased well completion horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747159.5A CN111827983B (en) | 2020-07-29 | 2020-07-29 | Water finding method and device for cased well completion horizontal well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111827983A CN111827983A (en) | 2020-10-27 |
| CN111827983B true CN111827983B (en) | 2023-05-26 |
Family
ID=72920447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010747159.5A Active CN111827983B (en) | 2020-07-29 | 2020-07-29 | Water finding method and device for cased well completion horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111827983B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761618B (en) * | 2021-01-26 | 2022-07-22 | 四川松云科技有限公司 | Horizontal oil well liquid production profile testing method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201546710U (en) * | 2009-11-04 | 2010-08-11 | 中国石油天然气股份有限公司 | Sectionalized water-exploration testing pipe column of casing well-completion horizontal well |
| CN102747967A (en) * | 2012-07-10 | 2012-10-24 | 中国石油天然气股份有限公司 | Multi-stage segmented release water exploration pipe column and method for casing well completion multi-stage fractured horizontal well |
| CN103266867B (en) * | 2013-05-31 | 2015-10-21 | 中国石油集团川庆钻探工程有限公司 | A kind of horizontal well water exploration valve |
| CN103696749A (en) * | 2013-10-25 | 2014-04-02 | 陕西高新能源发展有限公司 | Closable fracture sliding sleeve |
| WO2015074243A1 (en) * | 2013-11-22 | 2015-05-28 | 中国石油天然气股份有限公司 | Intelligent test system and method for multi-segment fractured horizontal well |
| CN103711455B (en) * | 2013-12-16 | 2016-04-20 | 东营市福利德石油科技开发有限责任公司 | Deepwater wells can be fixed ball and produce sliding sleeve |
| CN208220752U (en) * | 2018-03-07 | 2018-12-11 | 陕西鼎和源瑞环境工程有限公司 | Spherically seated fills the water sliding sleeve |
| CN109184604B (en) * | 2018-09-26 | 2020-07-28 | 中石化石油机械股份有限公司 | Novel one-ball type multi-activation underground bypass valve and system and using method thereof |
-
2020
- 2020-07-29 CN CN202010747159.5A patent/CN111827983B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111827983A (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4100969A (en) | Tubing tester valve apparatus | |
| US4633952A (en) | Multi-mode testing tool and method of use | |
| EP0699819B1 (en) | Method and apparatus for well testing or servicing | |
| AU2015264868B2 (en) | Apparatus and method for controlling the connection and disconnection speed of downhole connectors | |
| US4694903A (en) | Flapper type annulus pressure responsive tubing tester valve | |
| US4452313A (en) | Circulation valve | |
| RU2107806C1 (en) | Pipe testing valve and method for removing testing string from permanent packer | |
| US4149593A (en) | Well testing tool system | |
| EP0241196B1 (en) | Annulus pressure responsive sampler valve | |
| US4883123A (en) | Above packer perforate, test and sample tool and method of use | |
| CN111827983B (en) | Water finding method and device for cased well completion horizontal well | |
| US4624317A (en) | Well tool with improved valve support structure | |
| AU2004201438A1 (en) | Testing drill packer | |
| US4187906A (en) | Well bore apparatus with annulus pressure releasable tubing seal unit | |
| CN110017127B (en) | Acid fracturing water control integrated device, acid fracturing water control pipe column and acid fracturing water control method | |
| CN212359729U (en) | Horizontal well fracturing tracer monitoring sliding sleeve and tracer segmented monitoring device | |
| US2970470A (en) | Method and apparatus for use in wells | |
| CN113323627A (en) | Differential pressure sliding sleeve and oil-gas well fracturing construction method | |
| CN204627602U (en) | Well sampling device | |
| CN220081413U (en) | Double-seal span test pipe column for small broken block oil and gas reservoir | |
| CN213684064U (en) | Oil layer hot washing double-protection device | |
| RU2175710C2 (en) | Packer ( variants ) | |
| CA3036227C (en) | Selective test tool | |
| CN114592862A (en) | Well shut-in sampling valve, oil testing pipe column and operation method of oil testing pipe column | |
| SU1264638A1 (en) | Device for hydrodynamic testing of formation |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |