CN111827983A - Water exploration method and device for casing completion horizontal well - Google Patents
Water exploration method and device for casing completion horizontal well Download PDFInfo
- Publication number
- CN111827983A CN111827983A CN202010747159.5A CN202010747159A CN111827983A CN 111827983 A CN111827983 A CN 111827983A CN 202010747159 A CN202010747159 A CN 202010747159A CN 111827983 A CN111827983 A CN 111827983A
- Authority
- CN
- China
- Prior art keywords
- water
- valve
- sliding sleeve
- well
- cased
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000003129 oil well Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 15
- 239000010985 leather Substances 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Check Valves (AREA)
Abstract
The invention provides a water exploration method and a water exploration device for a cased well completion horizontal well. The water exploration method for the cased well completion horizontal well comprises the following steps: step S1: placing a water exploration device for a cased well completion horizontal well in the horizontal well; step S2: starting an oil pump, detecting and recording the water-containing data of the current oil; step S3: starting a pressurizing device, sending a valve ball of a water finding device for the casing completion horizontal well into an Nth water finding valve of the water finding device for the casing completion horizontal well to block a bypass flow channel of the Nth water finding valve, and enabling the valve ball to pass through the Nth water finding valve, wherein N is a positive integer; step S4: starting the oil well pump again, detecting and recording the water-containing data of the current oil; and repeating the steps S3 to S4 to increase N by one in sequence until all the oil pipes are detected. The invention solves the problem of high water exploration 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 exploration method and device for a casing completion horizontal well.
Background
The horizontal well is a well completion mode for the development of low-permeability and ultra-low-permeability oil reservoirs. For an oil reservoir with bottom water, the fracturing is easy to communicate with the bottom water to cause water to flow out of a certain perforation section, so that high water content of the whole well produced liquid is caused, the horizontal well section is not fully used, and the development benefit is influenced.
The current technology for water exploration of horizontal well completed by casing is mainly divided into the following two types.
For oil wells with high liquid production from flowing wells, various methods for finding water are available at home and abroad, such as Flow Scanne system of Schlumberger and BHGE PhaseView of BeckhousTMThe X system, the Haributton Advanced Measurement System (AMS) and the FOTECH optical fiber water finding technology are mainly used for finding water by combining a neutron oxygen activation testing technology with well logging information in China. The method can directly or indirectly obtain indexes such as liquid production amount, water content and the like of each section of the horizontal well, but has the defects of long water finding period and high cost.
Coiled tubing is generally used for water exploration methods for artificially lifting horizontal wells. For the oil well with blowout stoppage, a coiled tubing with a testing instrument is mainly adopted, and the ground is matched with a gas lift process to carry out water exploration operation of horizontal well sections section by section. There is also a method of testing for water content by downhole sampling with coiled tubing with a downhole sampler. This method is mainly suitable for wells with high liquid production per well, and is not suitable for wells with daily liquid production of 15 tons or less.
Disclosure of Invention
The invention mainly aims to provide a water exploration method and a water exploration device for a cased well completion horizontal well, and aims to solve the problem that the water exploration operation cost of a low liquid production well in the prior art is high.
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 horizontal well, the water exploration method for the cased hole horizontal well comprising the steps of: step S1: placing a water exploration device for a cased well completion horizontal well in the horizontal well; step S2: starting an oil pump, detecting and recording the water-containing data of the current oil; step S3: starting a pressurizing device, sending a valve ball of a water finding device for the casing completion horizontal well into an Nth water finding valve of the water finding device for the casing completion horizontal well to block a bypass flow channel of the Nth water finding valve, and enabling the valve ball to pass through the Nth water finding valve, wherein N is a positive integer; step S4: starting the oil well pump again, detecting and recording the water-containing data of the current oil; and repeating the steps S3 to S4 to increase N by one in sequence until all the oil pipes are detected.
According to another aspect of the present invention, there is provided a water exploration device for a cased hole horizontal well, using the water exploration method for a cased hole horizontal well described above, the water exploration device for a cased hole horizontal well comprising: a water finding valve; the oil pipes are connected in sequence through a plurality of water finding valves; the oil pump is arranged at the end part of an oil pipe at the wellhead; the pressurizing device is arranged at an oil pipe at the wellhead, and the second joints of the water finding valves are close to the wellhead relative to the first joints of the water finding valves; the packers are arranged on each section of 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 pipe to block a bypass flow channel of the water finding valve.
Further, the valve of finding water includes: the outer barrel is provided with a first joint and a second joint at two ends; the central pipe is positioned in the outer barrel and communicated with the first connector, and a bypass flow channel is formed between the central pipe and the outer barrel; the sliding sleeve is arranged in the outer barrel and 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 barrel, an expansion groove is formed in the inner wall surface of the sliding sleeve, the sliding sleeve can block the bypass flow channel when moving to one side of the central tube, and a bypass hole is formed in the position, in the bypass flow channel, of the barrel wall of the outer barrel; the expansion ball seat is arranged in the sliding sleeve in a sliding mode 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; and the unidirectional pressure-bearing component is arranged at the bypass flow channel to unidirectionally plug the bypass flow channel, so that the liquid in the outer barrel is prevented from flowing to the outside of the outer barrel through the bypass flow hole.
Further, the sliding sleeve has seted up spacing step towards the one end of center tube, and when the sliding sleeve slided towards the center tube, the tip of center tube can the butt on spacing step.
Further, the one-way pressure-bearing assembly is located between the sliding sleeve and the bypass hole.
Further, the pressure-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 tube, and the opening of the leather cup can be opened only towards the direction of the sliding sleeve; the leather cup is fixed on the outer wall of the central tube by the clamping ring.
Furthermore, the water detection valve also comprises a shearing pin which fixes the sliding sleeve on the inner wall of the outer cylinder.
Further, the water detection valve still includes: the first sealing element 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 pipe.
Further, the water exploration device for the casing 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 the valve ball.
Further, the water exploration device for the casing completion horizontal well further comprises: the screen pipe is communicated with the setting ball seat; and the end part of the sieve tube is plugged by the plug.
By applying the technical scheme of the invention, the water exploration device for the casing well completion horizontal well is firstly placed in the horizontal well, the horizontal well is reinforced by adopting the casing, the oil well pump is started, the water content data of the current oil is detected and recorded, then the pressurizing device is started to pressurize the oil pipe, the valve ball can enter the first water finding valve under the action of the pressurizing device, and the bypass flow channel of the first water finding valve is blocked, after the bypass flow channel is blocked, the liquid at the position of the oil pipe cannot enter the first water finding valve, the oil well pump is started again to obtain the current water content data, the analogy is repeated, the valve ball enters a second water finding valve, a third water finding valve and an Nth water finding valve, therefore, the water containing conditions of other sections in the horizontal well except the first section can be known, data is provided for water insulation in the later period, the oil pipe does not need to be moved repeatedly in the operation process, and the cost of water finding operation is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a flow diagram of a water exploration method for cased hole horizontal wells according to an embodiment of the present invention; and
FIG. 2 shows a schematic structural diagram of a water exploration device for cased-hole horizontal wells according to an embodiment of the present invention;
figure 3 shows a schematic half-section through the water exploration valve of figure 2.
Wherein the figures include the following reference numerals:
10. an oil pipe; 20. an oil well pump; 30. a pressurizing device; 40. a packer; 50. a water finding valve; 51. an outer cylinder; 511. a first joint; 512. a second joint; 513. a bypass flow channel; 514. a bypass orifice; 52. a central tube; 53. a sliding sleeve; 531. an expansion tank; 532. a first seal member; 533. a second seal member; 534. a limiting step; 54. an expansion ball seat; 55. a one-way pressure bearing assembly; 551. a leather cup; 552. a snap ring; 56. shearing the pin; 60. setting a ball seat; 70. a screen pipe; 80. plugging with a thread; 90. horizontal wells; 100. a sleeve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that, unless otherwise indicated, 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.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem of high water exploration operation cost of a low liquid production well in the prior art, the invention provides a water exploration method and a water exploration device for a casing well completion horizontal well. The water exploration device for the cased well completion horizontal well adopts the water exploration method for the cased well completion horizontal well.
As shown in fig. 1, the water exploration method for the cased-hole horizontal well comprises the following steps: step S1: placing a water exploration device for a cased well completion horizontal well in the horizontal well 90; step S2: starting the oil pump 20, detecting and recording the water-containing data of the current oil; step S3: starting the pressurizing device 30, sending a valve ball of the water exploration device for the cased well completion horizontal well to an Nth water exploration valve 50 of the water exploration device for the cased well completion horizontal well to block a bypass flow channel 513 of the Nth water exploration valve 50, wherein the valve ball passes through the Nth water exploration valve 50, and N is a positive integer; step S4: starting the oil well pump 20 again, detecting and recording the water content data of the current oil liquid; and repeating the steps S3 to S4 to increase N by one in sequence until all the oil pipes 10 are detected.
In the detection process, in the steps, firstly, the water exploration device for the casing completion horizontal well is placed in the horizontal well 90, and the horizontal well 90 is reinforced by the casing 100. Starting the oil pump 20, detecting and recording the water-containing data of the current oil; and then, the pressurizing device 30 is started to pressurize the oil pipe, the valve ball can enter the first water finding valve 50 under the action of the pressurizing device 30 and block the bypass flow channel 513 of the first water finding valve 50, after the bypass flow channel 513 is blocked, the liquid at the position of the oil pipe 10 cannot enter the first water finding valve 50, and the oil well pump 20 is started again to obtain the current water content data. By analogy, the valve ball enters the second water finding valve 50, the third water finding valve 50 and the Nth water finding valve, so that the water containing conditions of other sections except the first section in the horizontal well 90 can be known, and data is provided for water isolation in the later period. The oil pipe 10 does not need to be moved repeatedly in the operation process, and the cost of water finding operation is reduced.
As shown in fig. 2, the water exploration device for the casing completion horizontal well comprises a water exploration valve 50, a plurality of oil pipes 10, an oil well 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 exploration valves 50; the oil well pump 20 is arranged at the end part of the oil pipe 10 at the wellhead; the pressurizing device 30 is arranged at the tubing 10 at the wellhead, 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 arranged on each section of oil pipe 10; the 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 flow passage 513 of the water finding valve 50.
In this embodiment, the oil-well 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 flow channel 513 of the water finding valve 50, after the bypass flow channel 513 is blocked, the liquid at the position of the section of oil tube 10 cannot enter the water finding valve 50, at this time, the oil-well pump 20 is started again, and the water content data of the current oil liquid is detected and recorded. When the pressurizing device 30 is started again, the valve ball can seal the next water finding valve 50, and the oil well pump 20 is started again to obtain the current water content data. By analogy, the water content condition of each position in the horizontal well 90 can be known, the oil pipe 10 does not need to be moved repeatedly in the operation process, and the cost of water finding operation is reduced.
As shown in fig. 2 to 3, the water detection valve comprises an outer cylinder 51, a central pipe 52, a sliding sleeve 53, an expansion ball seat 54 and a one-way pressure-bearing assembly 55, wherein a first joint 511 and a second joint 512 are arranged at two ends of the outer cylinder 51; the central pipe 52 is positioned in the outer cylinder 51, the central pipe 52 is communicated with the first joint 511, and a bypass flow channel 513 is formed between the central pipe 52 and the outer cylinder 51; the sliding sleeve 53 is arranged in the outer cylinder 51 and 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 towards one side of the central tube 52, and a side flow hole 514 is formed in the position of the side flow channel 513 on the cylinder wall of the outer cylinder 51; 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; the one-way pressure-bearing assembly 55 is disposed at the bypass flow passage 513 to one-way block the bypass flow 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 passage 513 is formed between the central tube 52 and the outer tub 51, and a one-way pressure-bearing assembly 55 is disposed at the bypass passage 513 to one-way block the bypass passage 513, thereby preventing the liquid in the outer tub 51 from flowing to the outside of the outer tub 51 through the bypass hole 514. The oil pipes 10 are connected in sequence through the 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 seal the bypass flow channel 513 of the water finding valve 50, after the bypass flow channel 513 is sealed, liquid at the position of the oil pipe 10 cannot enter the water finding valve 50, at the moment, the oil well pump 20 is started, and the water content data of the current oil liquid is detected and recorded. When the pressurizing device 30 is started again, the valve ball can seal the next water finding valve 50, and the oil well pump 20 is started again to obtain the current water content data. By analogy, the water content condition of each position in the horizontal well 90 can be known, the oil pipe 10 does not need to be moved repeatedly 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 and the central tube 52 of the water finding valve 50, the locking structure can 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 blocks the bypass flow passage 513, the central tube 52 is clamped in the sliding sleeve 53, so as to prevent incomplete closing caused by too high pressure difference between the ground layers.
As shown in fig. 2 to 3, the sliding sleeve 53 has a limit step 534 at one end facing the center tube 52, and when the sliding sleeve 53 slides toward the center tube 52, the end of the center tube 52 can abut against the limit step 534. In this embodiment, when the pressure device 30 presses into the oil pipe 10, the ball enters the expansion ball seat 54 of the water finding valve 50, and the sliding sleeve 53 of the water finding valve 50 moves toward the central tube 52 to block the bypass flow passage 513 of the water finding valve 50. When the bypass flow passage 513 is blocked, the limiting step 534 can limit the sliding sleeve 53 to continue moving towards the central pipe 52, at this time, under the pushing of the valve ball, the expansion ball seat 54 will move relative to the sliding sleeve 53 and enter 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, the pressure relief assembly 55 is located between the sliding sleeve 53 and the bypass orifice 514. The one-way pressure-bearing assembly 55 comprises a leather cup 551 and a clamping ring 552, the inner ring of the leather cup 551 is sleeved on the outer wall of the central pipe 52, the outer ring of the leather cup 551 is attached to the inner wall of the outer cylinder 51, and the opening of the leather cup 551 can be opened only 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 the 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 cylinder 51, the opening of the cup 551 can be opened only towards the direction of the sliding sleeve 53, so that the liquid in the outer cylinder 51 flows to the outside of the outer cylinder 51 through the bypass hole 514, and the liquid outside the outer cylinder 51 can enter the outer cylinder 51. Adopt snap ring 552 to fix leather cup 551, make things convenient for the later stage to change.
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 tub 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 freely in the outer cylinder 51, and only under the pushing of the valve ball, the sliding sleeve 53 can overcome the force of the shear pin 56 and move toward the central tube 52 to block the bypass passage 513 of the water finding valve 50.
As shown in fig. 3, the find water valve 50 further comprises a first sealing member 532 and a second sealing member 533, wherein the first sealing member 532 is disposed on the outer wall surface of the sliding sleeve 53 for sealing the contact portion of the sliding sleeve 53 and the outer tub 51; a second seal 533 is provided on an inner wall surface of the slide sleeve 53 for sealing a contact portion of the slide sleeve 53 with the center pipe 52.
In this embodiment, when the sliding sleeve 53 moves toward the central tube 52 to block the bypass passage 513 of the water finding valve 50, the end of the central tube 52 abuts against the limiting step 534, and at this time, the end of the central tube 52 is also inserted into the sliding sleeve 53, the second sealing member 533 can seal the contact portion of the sliding sleeve 53 and the central tube 52, and the first sealing member 532 seals the contact portion of the sliding sleeve 53 and the outer cylinder 51, so as to achieve the purpose of blocking the bypass passage 513.
In this embodiment, packer 40 can adopt the structural design of valve ball deblocking, can realize closing packer 40 of deblocking simultaneously when looking for water valve 50, and parts such as the packing element of packer 40 and slips can adopt soluble material.
As shown in fig. 2, the water exploration equipment for cased-hole horizontal wells further comprises a setting ball seat 60, and the tubing 10 at the tail end is provided with the setting ball seat 60 to accommodate 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 to be conveniently used for a second time.
As shown in fig. 2, the water exploration device for the cased well completion horizontal well further comprises a screen pipe 70 and a plug 80, wherein the screen pipe 70 is communicated with the setting ball seat 60; the plug 80 plugs the end of the screen 70. In this embodiment, at the in-process that starts oil-well pump 20 extraction fluid and detect, fluid can follow in the screen pipe 70 gets into in the oil pipe, and screen pipe 70 can play certain screening effect to the fluid that gets into in the oil pipe, prevents that big impurity from blockking up oil pipe. The plug seals the end of the screen 70 so that oil in this section can only enter the pipe 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 according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of 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 this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation 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, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A water exploration method for a cased hole horizontal well is characterized by comprising the following steps:
step S1: placing a water exploration device for a cased well completion horizontal well in the horizontal well (90);
step S2: starting an oil well pump (20), detecting and recording the water-containing data of the current oil;
step S3: starting a pressurizing device (30), sending a valve ball of the water finding device for the cased well completion horizontal well to an Nth water finding valve (50) of the water finding device for the cased well completion horizontal well to block a bypass flow 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: the oil well pump (20) is started again, and the water-containing data of the current oil liquid is detected and recorded;
and repeating the steps S3 to S4 to increase N by one in sequence until all the oil pipes (10) are detected.
2. A water exploration device for a cased hole horizontal well, which is characterized in that the water exploration method for the cased hole horizontal well as claimed in claim 1 is adopted, and comprises the following steps:
a water finding valve (50);
the oil pipes (10) are connected in sequence through the water finding valves (50);
the oil well pump (20), the said oil well pump (20) is set up in the end of the said oil pipe (10) of the well head;
a pressurizing device (30), the pressurizing device (30) being arranged at the tubing (10) at a well head, the second joints (512) of the plurality of water finding valves (50) being close to the well head with respect to the first joints (511) of the water finding valves (50);
a plurality of packers (40), said packers (40) being disposed 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 enables the sliding sleeve (53) of the water finding valve (50) to move towards the central pipe (52) so as to seal off the bypass flow channel (513) of the water finding valve (50).
3. Water exploration device for cased completion horizontal wells according to claim 2, characterized in that said water exploration 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 center tube (52), the center tube (52) being located within the outer barrel (51), the center tube (52) being in communication with the first junction (511), the center tube (52) and the outer barrel (51) forming a bypass flow channel (513) therebetween;
the sliding sleeve (53) is arranged in the outer cylinder (51) and movably arranged between the central pipe (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 flow channel (513) when moving to one side of the central pipe (52), and a bypass hole (514) is formed in the position, where the bypass flow channel (513) is located, of the wall of the outer cylinder (51);
the expansion ball seat (54) is arranged in the sliding sleeve (53) in a sliding mode 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-bearing assembly (55) is arranged at the bypass flow channel (513) to unidirectionally block the bypass flow channel (513), so that the liquid in the outer barrel (51) is prevented from flowing to the outside of the outer barrel (51) through the bypass hole (514).
4. The water exploration device for the cased completion horizontal well according to claim 3, wherein the sliding sleeve (53) is provided with a limiting step (534) at one end facing the central pipe (52), and when the sliding sleeve (53) slides towards the central pipe (52), the end of the central pipe (52) can abut against the limiting step (534).
5. The water exploration device for cased, completed horizontal wells according to claim 3, wherein said one way pressure bearing assembly (55) is located between said sliding sleeve (53) and said bypass aperture (514).
6. Water exploration device for cased completion horizontal wells according to claim 5, characterized in that said unidirectional pressure bearing assembly (55) comprises:
the inner ring of the leather cup (551) is sleeved on the outer wall of the central pipe (52), the outer ring of the leather cup (551) is attached to the inner wall of the outer barrel (51), and the opening of the leather cup (551) can be opened only towards the direction of the sliding sleeve (53);
a snap ring (552), the snap ring (552) securing the cup (551) to the outer wall of the center tube (52).
7. The water exploration device for a cased, completed horizontal well according to claim 3, wherein said water exploration valve (50) further comprises a shear pin (56), said shear pin (56) fixing said sliding sleeve (53) on the inner wall of said outer barrel (51).
8. The water exploration device for cased, completed horizontal wells according to claim 3, wherein said water exploration valve (50) further comprises:
a first seal (532), the first seal (532) is arranged on the outer wall surface of the sliding sleeve (53) and is used for sealing the contact part of the sliding sleeve (53) and the outer cylinder (51); and/or
A second sealing member (533), the second sealing member (533) being provided on an inner wall surface of the sliding sleeve (53) for sealing a contact portion of the sliding sleeve (53) with the center pipe (52).
9. The water exploration device for a cased-hole horizontal well according to claim 2, characterized in that it further comprises a setting ball seat (60), said oil pipe (10) at the tail end being provided with said setting ball seat (60) to accommodate said valve ball.
10. The water exploration device for a cased hole horizontal well as claimed in claim 9, wherein said water exploration device for a cased hole horizontal well further comprises:
a screen (70), the screen (70) in communication with the setting seat (60);
a plug (80), the plug (80) plugging the 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 true CN111827983A (en) | 2020-10-27 |
| CN111827983B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761618A (en) * | 2021-01-26 | 2021-05-07 | 四川松云科技有限公司 | Novel horizontal oil well liquid production profile testing method |
Citations (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 | Segmented water exploration test pipe column for casing 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 completion multi-stage fractured horizontal well |
| CN103266867A (en) * | 2013-05-31 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司 | 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 |
| CN103711455A (en) * | 2013-12-16 | 2014-04-09 | 东营市福利德石油科技开发有限责任公司 | Fixable ball-type production sleeve for deep-water oil well |
| 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 |
| 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 |
| CN109184604A (en) * | 2018-09-26 | 2019-01-11 | 中石化石油机械股份有限公司 | The novel ball-type of one kind repeatedly activates down-hole by-pass valve and its system and application method |
-
2020
- 2020-07-29 CN CN202010747159.5A patent/CN111827983B/en active Active
Patent Citations (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 | Segmented water exploration test pipe column for casing 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 completion multi-stage fractured horizontal well |
| CN103266867A (en) * | 2013-05-31 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司 | 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 |
| CN103711455A (en) * | 2013-12-16 | 2014-04-09 | 东营市福利德石油科技开发有限责任公司 | Fixable ball-type production sleeve for deep-water oil well |
| 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 |
| CN109184604A (en) * | 2018-09-26 | 2019-01-11 | 中石化石油机械股份有限公司 | The novel ball-type of one kind repeatedly activates down-hole by-pass valve and its system and application method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761618A (en) * | 2021-01-26 | 2021-05-07 | 四川松云科技有限公司 | Novel horizontal oil well liquid production profile testing method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111827983B (en) | 2023-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2018204195B2 (en) | Apparatus and method for controlling the connection and disconnection speed of downhole connectors | |
| EP0699819B1 (en) | Method and apparatus for well testing or servicing | |
| US4478279A (en) | Retrievable inside blowout preventer valve apparatus | |
| US4694903A (en) | Flapper type annulus pressure responsive tubing tester valve | |
| US4100969A (en) | Tubing tester valve apparatus | |
| US4700777A (en) | Gravel packing apparatus and method | |
| US20130319102A1 (en) | Downhole Tools and Oil Field Tubulars having Internal Sensors for Wireless External Communication | |
| US20070056750A1 (en) | Deployable Zonal Isolation System | |
| CN201273188Y (en) | Integrated water exploration pipe column for casing well completion horizontal well | |
| US4883123A (en) | Above packer perforate, test and sample tool and method of use | |
| US4319634A (en) | Drill pipe tester valve | |
| US20090250227A1 (en) | A System And Method For Plugging A Side Pocket Mandrel Using A Swelling Plug | |
| US4319633A (en) | Drill pipe tester and safety valve | |
| CN111827983A (en) | Water exploration method and device for casing completion horizontal well | |
| US4420045A (en) | Drill pipe tester and safety valve | |
| AU2014376323B2 (en) | Dual isolation well assembly | |
| US4187906A (en) | Well bore apparatus with annulus pressure releasable tubing seal unit | |
| US2975836A (en) | Dual string cross-over tool | |
| CN110017127B (en) | Acid fracturing water control integrated device, acid fracturing water control pipe column and acid fracturing water control method | |
| US2970470A (en) | Method and apparatus for use in wells | |
| CN221442552U (en) | Well cementation device | |
| EP0480584A2 (en) | Wellbore tester valve | |
| CN110617034B (en) | Isolation gas lift method of permanent well completion pipe string | |
| CN113513309A (en) | Tieback type electric control shaft isolation intelligent well completion tool and working method | |
| CN114592862A (en) | Well shut-in sampling valve, oil testing pipe column and operation method of oil testing pipe column |
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 |