CN110792415A - Dynamic monitoring system for horizontal water injection well - Google Patents
Dynamic monitoring system for horizontal water injection well Download PDFInfo
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- CN110792415A CN110792415A CN201810785748.5A CN201810785748A CN110792415A CN 110792415 A CN110792415 A CN 110792415A CN 201810785748 A CN201810785748 A CN 201810785748A CN 110792415 A CN110792415 A CN 110792415A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
-
- 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
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides a dynamic monitoring system for a horizontal water injection well, which comprises a water injection well and a dynamic monitoring device arranged in the water injection well; the water injection well comprises a well body structure and a Christmas tree, wherein the well body structure is arranged below the Christmas tree and comprises a sleeve and an oil pipe, the sleeve and the oil pipe are both connected with the Christmas tree, the oil pipe is arranged in the sleeve, the oil pipe comprises a vertical section, a bending section and a horizontal section, and the bending section is arranged between the vertical section and the horizontal section; the dynamic monitoring device is arranged in the oil pipe and comprises a testing instrument and a power umbrella fixedly connected with the testing instrument, the cross section area of the power umbrella is larger than that of the testing instrument, and the power umbrella drives the testing instrument to move from a vertical section to a horizontal section under the driving of the driving device. The system of the invention is not easy to generate clamping stagnation when the test instrument is placed in the horizontal section of the horizontal water injection well, and can effectively reduce the production cost of a construction unit.
Description
Technical Field
The invention relates to an oil-gas well production technology, in particular to a dynamic monitoring system for a horizontal water injection well.
Background
In the process of oil and gas exploitation, the formation energy of the oil and gas well is continuously attenuated along with the exploitation. In order to ensure the smooth production, a certain measure is needed to maintain the formation energy, wherein water injection is an important measure for maintaining the formation pressure, accelerating the recovery speed and improving the recovery ratio of the oil-gas well. Corresponding dynamic monitoring work needs to be carried out when the formation energy is maintained by adopting a water injection mode, whether the injected water enters a designed horizon, whether the expected oil displacement effect is achieved, whether an injection allocation scheme is reasonable and the like are judged by monitoring corresponding parameters.
In the prior art, a test instrument is generally placed in a water injection well, and the test instrument is used for monitoring relevant parameters in the water injection process to realize dynamic monitoring of the water injection process. To horizontal water injection well, the horizontal segment that test instrument can't rely on gravity to get into horizontal water injection well, need use external force this moment to put into horizontal water injection well's horizontal segment with test instrument in, generally use among the prior art to creep the robot and come the horizontal segment removal of auxiliary test instrument to horizontal water injection well, its concrete way is: fixing the testing instrument on the crawling robot, and then putting the crawling robot into the oil pipe to drive the testing instrument to enter the horizontal section of the horizontal water injection well.
However, as some impurities are inevitably left in the oil pipe in the production process of the oil-gas well, the crawling robot is easy to block when passing through the road section; in addition, the crawling robot is expensive to manufacture, and the production cost of a construction unit is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a dynamic monitoring system for a horizontal water injection well, which is not easy to generate clamping stagnation when a testing instrument is placed in a horizontal section of the horizontal water injection well and can effectively reduce the production cost of a construction unit.
The invention provides a dynamic monitoring system for a horizontal water injection well, which comprises a water injection well and a dynamic monitoring device arranged in the water injection well; the water injection well comprises a well body structure and a Christmas tree, wherein the well body structure is arranged below the Christmas tree and comprises a casing and an oil pipe, the casing and the oil pipe are both connected with the Christmas tree, the oil pipe is arranged in the casing, the oil pipe comprises a vertical section, a bending section and a horizontal section, and the bending section is arranged between the vertical section and the horizontal section; the dynamic monitoring device is arranged in the oil pipe and comprises a testing instrument and a power umbrella fixedly connected with the testing instrument, the cross section area of the power umbrella is larger than that of the testing instrument, and the power umbrella drives the testing instrument to move from the vertical section to the horizontal section under the driving of the driving device.
According to the dynamic monitoring system for the horizontal water injection well, optionally, the power umbrella is fixedly connected with the testing instrument in a threaded connection mode.
According to the dynamic monitoring system for the horizontal water injection well, optionally, the central line of the power umbrella coincides with the central line of the test instrument.
According to the dynamic monitoring system for the horizontal water injection well, the power umbrella is optionally fixed at the upper part, the middle part or the lower part of the testing instrument.
According to the dynamic monitoring system for the horizontal water injection well, the cross section of the power umbrella is circular, square or triangular.
According to the dynamic monitoring system for the horizontal water injection well, the power umbrella can be a rubber power umbrella, a resin power umbrella or a metal power umbrella.
The horizontal water injection well dynamic monitoring system as described above, optionally, the christmas tree comprises a water injection line and a test line connected to the oil pipe, and a water return line connected to the casing.
According to the dynamic monitoring system for the horizontal water injection well, optionally, the driving device comprises a water injection station and a water injection pump for controlling the water injection strength of the water injection station, the water injection station is connected with the water injection pipeline, and the water injection pump is arranged on the water injection pipeline.
Optionally, the dynamic monitoring device further includes a controller, the controller is connected to the testing instrument through a testing cable, and the testing cable is connected to the testing instrument through the testing pipeline.
According to the dynamic monitoring system for the horizontal water injection well, optionally, the water return pipeline is connected with a wastewater collection device.
The invention provides a dynamic monitoring system of a horizontal water injection well, which comprises a water injection well and a dynamic monitoring device arranged in the water injection well; the water injection well comprises a well body structure and a Christmas tree, wherein the well body structure is arranged below the Christmas tree and comprises a sleeve and an oil pipe, the sleeve and the oil pipe are both connected with the Christmas tree, the oil pipe is arranged in the sleeve, the oil pipe comprises a vertical section, a bending section and a horizontal section, and the bending section is arranged between the vertical section and the horizontal section; the dynamic monitoring device is arranged in the oil pipe and comprises a testing instrument and a power umbrella fixedly connected with the testing instrument, the cross section area of the power umbrella is larger than that of the testing instrument, and the power umbrella drives the testing instrument to move from a vertical section to a horizontal section under the driving of the driving device. The power umbrella is connected to the test instrument, the cross section area of the power umbrella is larger than that of the test instrument, and the acting force acting on the power umbrella is larger than that directly acting on the test instrument under the driving of the driving device, so that the driving force acting on the test instrument by the driving device is greatly enhanced through the power umbrella, and the test instrument is driven to move from the vertical section to the horizontal section. When the system is used, the test instrument is not easy to be blocked when being placed in the horizontal section of the water injection well by increasing the driving force applied by the driving device, and the production cost of a construction unit can be effectively reduced by adopting the power umbrella to replace a crawling robot.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dynamic monitoring system for a horizontal water injection well according to an embodiment of the present invention;
FIG. 2 is a schematic representation of a wellbore configuration provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of a Christmas tree according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a dynamic monitoring apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic view of a powered umbrella according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a driving device according to an embodiment of the present invention.
Reference numerals:
100-a water injection well; 110-well bore configuration;
111-a sleeve; 1111-perforation segment;
112-tubing; 1121-vertical section;
1122-curved segment; 1123-horizontal segment;
120-a christmas tree; 121-water injection line;
1211-production valve; 122-test line;
1221-testing a valve; 123-a water return pipeline;
1231-cannula valve; 200-a dynamic monitoring device;
210-a test instrument; 220-power umbrella;
2201-via hole; 230-a test cable;
240-a controller; 310-a water injection station;
320-water injection pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, 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. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that the terms "first" and "second" in the description of the present invention are used merely for convenience in describing different components, and are not to be construed as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Petroleum is a complex mixture consisting of gaseous, liquid and solid hydrocarbons present in nature, as well as small amounts of impurities. Hydrocarbons are present in a dispersed state in a raw hydrocarbon reservoir after formation of the earth's crust and subsequently migrate into the reservoir and accumulate in a geologic formation with good storage conditions to form a reservoir. Oil recovery is the process of excavating and extracting oil in a reservoir where the oil is stored, the reservoir having a storage space that allows the flow of oil and gas therethrough, the reservoir space including the pores between rock fragments, fractures in rock fractures, cavities formed by erosion, etc., the size, distribution and communication of the voids in the reservoir space affecting the flow of oil and gas, thereby determining the characteristics of oil and gas recovery.
During oil extraction, oil and gas generally flow from a reservoir to the bottom of a well, then rise from the bottom of the well to the top of the well, then flow from the top of the well to an oil gathering station, and after separation and dehydration, the oil and gas flow to an oil and gas transmission main station and are output to a mining area.
Oil recovery can be roughly divided into three phases:
the primary oil recovery usually depends on natural energy such as rock expansion, edge water drive, gravity, natural gas expansion and the like for exploitation, and the natural energy is mainly utilized in the stage to enable oil in an oil reservoir to be lifted to the outside of a well through an oil pipe; however, as the production of crude oil and natural gas continues, the volume of fluid in reservoir rocks and formations gradually expands, elastic energy is gradually released, and the recovery rate of oil at this stage is only 15-20% on average.
The secondary oil recovery mainly improves the pressure of an oil layer through modes of water injection, gas injection and the like, so that the oil well can continue to produce oil after the jet of the oil well is stopped. The water injection exploitation is to inject water into the oil reservoir through a special injection well to maintain or restore the pressure of the oil layer, so that the oil reservoir forms stronger driving force to improve the exploitation rate and the recovery ratio of the oil reservoir; the gas injection exploitation mainly utilizes the effects of viscosity reduction, expansion, miscible phase, molecular diffusion and the like of injected gas to reduce interfacial tension and improve permeability, thereby improving the oil recovery rate of an oil field. Because of the heterogeneity of the formation, the injected fluid generally flows to the well along a path of lesser resistance, while the oil in the relatively more resistant areas, and some of the oil adsorbed by the rock, remains unexplored and the recovery from the secondary recovery phase remains limited.
The tertiary oil recovery mainly changes the viscosity and the adsorbability of crude oil to rocks by adopting various physical and chemical methods, thereby increasing the flowing capacity of the crude oil and further improving the recovery ratio of the crude oil. The tertiary oil recovery method mainly comprises a thermal oil recovery method, a chemical oil displacement method, a miscible phase oil displacement method, a microbial oil displacement method and the like. The thermal oil recovery method mainly utilizes a mode of reducing the viscosity of crude oil to improve the recovery ratio, wherein steam huff and puff is a common thermal oil recovery method, and a certain amount of steam is injected into an oil well and the heat energy of the steam is diffused to an oil layer, so that the viscosity of the crude oil is greatly reduced, and the flowing capacity of the crude oil is improved; the chemical oil displacement method is mainly characterized in that a chemical agent is injected to increase the viscosity of formation water, change the viscosity ratio of crude oil and formation water, reduce the difference between the flowing capacity of water and the flowing capacity of oil in the formation and reduce the adsorbability of the crude oil to rocks so as to improve the oil displacement efficiency; the miscible-phase oil displacement method mainly reduces the viscosity of crude oil and the adsorbability to rocks by injecting natural gas, carbon dioxide and other gases into the crude oil to generate miscible phase; the microbe oil displacement method is to crack heavy hydrocarbon and paraffin wax with microbe and its metabolite to change the macromolecule of petroleum into small molecule and to metabolize to produce gas soluble in crude oil, so as to reduce the viscosity of crude oil and increase the flowability of crude oil, and to raise the recovery rate of crude oil.
In the process of oil and gas exploitation, the formation energy of the oil and gas well is continuously attenuated along with the exploitation. In order to ensure the smooth production, a certain measure is needed to maintain the formation energy, wherein water injection is an important measure for maintaining the formation pressure, accelerating the recovery speed and improving the recovery ratio of the oil-gas well. Corresponding dynamic monitoring work needs to be carried out when the formation energy is maintained by adopting a water injection mode, whether the injected water enters a designed horizon, whether the expected oil displacement effect is achieved, whether an injection allocation scheme is reasonable and the like are judged by monitoring corresponding parameters.
In the prior art, a test instrument is generally placed in a water injection well, and the test instrument is used for monitoring relevant parameters in the water injection process to realize dynamic monitoring of the water injection process. To horizontal water injection well, the horizontal segment that test instrument can't rely on gravity to get into horizontal water injection well, need use external force this moment to put into horizontal water injection well's horizontal segment with test instrument in, generally use among the prior art to creep the robot and come the horizontal segment removal of auxiliary test instrument to horizontal water injection well, its concrete way is: fixing the testing instrument on the crawling robot, and then putting the crawling robot into the oil pipe to drive the testing instrument to enter the horizontal section of the horizontal water injection well.
However, as some impurities are inevitably left in the oil pipe in the production process of the oil-gas well, the crawling robot is easy to block when passing through the road section; in addition, the crawling robot is expensive to manufacture, and the production cost of a construction unit is increased.
In order to overcome the defects in the prior art, the invention aims to provide a dynamic monitoring system for a horizontal water injection well, which is not easy to generate clamping stagnation when a testing instrument is placed in a horizontal section of the horizontal water injection well and can effectively reduce the production cost of a construction unit.
The present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can more fully understand the present invention.
Fig. 1 is a schematic structural diagram of a dynamic monitoring system for a horizontal water injection well according to an embodiment of the present invention;
FIG. 2 is a schematic representation of a wellbore configuration provided in accordance with an embodiment of the present invention; FIG. 3 is a schematic diagram of a Christmas tree according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of a dynamic monitoring apparatus according to an embodiment of the present invention; FIG. 5 is a schematic view of a powered umbrella according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a driving device according to an embodiment of the present invention; please refer to fig. 1-6. The embodiment provides a dynamic monitoring system for a horizontal water injection well, which comprises a water injection well 100 and a dynamic monitoring device 200 arranged in the water injection well 100; the water injection well 100 comprises a well structure 110 and a Christmas tree 120, wherein the well structure 110 is arranged below the Christmas tree 120, the well structure 110 comprises a casing 111 and an oil pipe 112, the casing 111 and the oil pipe 112 are both connected with the Christmas tree 120, the oil pipe 112 is arranged in the casing 111, the oil pipe 112 comprises a vertical section 1121, a bent section 1122 and a horizontal section 1123, and the bent section 1122 is arranged between the vertical section 1121 and the horizontal section 1123; the dynamic monitoring device 200 is arranged in the oil pipe 112, the dynamic monitoring device 200 comprises a testing instrument 210 and a power umbrella 220 fixedly connected with the testing instrument 210, the cross-sectional area of the power umbrella 220 is larger than that of the testing instrument 210, and the power umbrella 220 drives the testing instrument 210 to move from the vertical section 1121 to the horizontal section 1123 under the driving of the driving device.
In particular, injection well 100 in this embodiment is an oil well in which the formation pressure during production is insufficient to provide normal production. The water injection well 100 includes a horizontal section, and the perforated section 1111 of the casing 111 is disposed at a lower portion of the horizontal section, so that it is not easy to insert the test instrument 210. The water injection well 100 is constructed as in the prior art and comprises a well structure 110 and a christmas tree 120, wherein the well structure 110 is arranged below the christmas tree 120, the well structure 110 comprises a casing 111 and a tubing 112, the casing 111 and the tubing 112 are both connected to the christmas tree 120, the tubing 112 is arranged in the casing 111, and an oil jacket annulus is formed between the casing 111 and the tubing. The oil pipe 112 comprises a vertical segment 1121, a curved segment 1122 and a horizontal segment 1123, wherein the curved segment 1122 is arranged between the vertical segment 1121 and the horizontal segment 1123, the curved segment 1122 is formed by gradually transitioning the vertical segment 1121 to the horizontal segment 1123, and the curvature of each segment is small. The curved portion 1122 is also a location where impurities in the tubing can easily accumulate and the test instrument 210 can easily become clogged while passing through this portion. The bottom of the casing 111 is provided with a perforation section 1111, the perforation section 1111 is connected with the stratum, and water injected through the oil pipe 112 flows into the stratum through the perforation section 1111, so as to supplement the energy of the stratum, thereby maintaining the normal production.
The testing device 200 of the present embodiment comprises a testing instrument 210 and a power umbrella 220 fixedly connected to the testing instrument 210, wherein the testing instrument 210 and the power umbrella 220 are disposed in the oil pipe 112, and the cross-sectional area of the power umbrella 220 should be smaller than the diameter of the oil pipe. Meanwhile, in the embodiment, the cross-sectional area of the power umbrella 220 is set to be larger than that of the test instrument 210, and according to the principle that the force is equal to the product of the pressure and the surface area, under the same driving pressure, the cross-sectional area of the power umbrella 220 is increased, which is beneficial to improving the driving force applied to the power umbrella 220 by the driving device. Under the driving of the driving device, the power umbrella 220 drives the testing instrument 210 to move from the vertical section 1121 to the horizontal section 1123.
In use, the test instrument 210 and the powered umbrella 220 enter the interior of the tubing 112 through corresponding inlets on the tree 120, and both can move downward within the vertical section 1121 of the tubing 112 by virtue of the gravity of the test instrument 210 and the powered umbrella 220 themselves. When the umbrella passes through the bent section 1122, the test instrument 210 and the power umbrella 220 cannot move continuously only by the gravity of the two due to the increase of the resistance, at this time, an acting force can be applied to the power umbrella 220 through the driving device, and the power umbrella 220 has a larger cross-sectional area, so that a larger driving force can be applied to the test instrument 210; when encountering a road section with impurities, the acting force borne by the power umbrella 220 can be increased by increasing the output driving pressure, and then the road section with the impurities is passed through. When the testing instrument 210 and the power umbrella 220 enter the horizontal section 1123, the driving force of the driving device can be stably output, so that the testing instrument 210 reaches a specified position to monitor various parameters during water injection.
The dynamic monitoring system for the water injection well provided by the embodiment comprises a water injection well 100 and a dynamic monitoring device 200 arranged in the water injection well 100; the water injection well 100 comprises a well structure 110 and a Christmas tree 120, wherein the well structure 110 is arranged below the Christmas tree 120, the well structure 110 comprises a casing 111 and an oil pipe 112, the casing 111 and the oil pipe 112 are both connected with the Christmas tree 120, the oil pipe 112 is arranged in the casing 111, the oil pipe 112 comprises a vertical section 1121, a bent section 1122 and a horizontal section 1123, and the bent section 1122 is arranged between the vertical section 1121 and the horizontal section 1123; the dynamic monitoring device 200 is arranged in the oil pipe 112, the dynamic monitoring device 200 comprises a testing instrument 210 and a power umbrella 220 fixedly connected with the testing instrument 210, the cross-sectional area of the power umbrella 220 is larger than that of the testing instrument 210, and the power umbrella 220 drives the testing instrument 210 to move from the vertical section 1121 to the horizontal section 1123 under the driving of the driving device. In the embodiment, the power umbrella 220 is connected to the test instrument 210, the cross-sectional area of the power umbrella 220 is larger than that of the test instrument 210, and the acting force acting on the power umbrella 220 is larger than that directly acting on the test instrument 210 under the driving of the driving device, so that the driving force acting on the test instrument 210 by the driving device can be greatly enhanced through the power umbrella 220, and the test instrument 210 is driven to move from the vertical section 1121 to the horizontal section 1123. When the system of the embodiment is used, the test instrument 210 is not easy to generate clamping stagnation when being placed in the horizontal section 1123 of the water injection well in a mode of increasing the driving force applied by the driving device, and the production cost of a construction unit can be effectively reduced by adopting the power umbrella 220 to replace a crawling robot.
Further, in this embodiment, the power umbrella 220 and the testing apparatus 210 may be connected by any suitable connection means, for example, in an alternative embodiment, the power umbrella 220 and the testing apparatus 210 are fixedly connected by a threaded connection.
Further, after the power umbrella 220 is connected with the testing instrument 210, the center line of the power umbrella 220 coincides with the center line of the testing instrument 210. So that the force exerted by the powered umbrella 220 on the test instrument 210 is more uniform.
Further, the power umbrella 220 of the present embodiment may be fixed to any one of the upper, middle or lower portions of the test instrument 210.
Further, the cross section of the power umbrella 220 may be circular, square, triangular or other irregular shapes, which is not further limited in this embodiment. The power umbrella 220 can be designed according to the size of the oil pipe 112 to be lowered, and the power umbrella 220 with corresponding size can be selected according to the oil pipes 112 with different diameters.
Further, the material of the power umbrella 220 is not limited in this embodiment, but the power umbrella 220 should have a certain strength to resist the hydraulic destructive force, for example, the power umbrella 220 may be selected from a rubber power umbrella, a resin power umbrella, or a metal power umbrella.
The tree 120 in this embodiment includes a water injection line 121 and a test line 122 connected to the tubing 112 and a water return line 123 connected to the casing 111. The water injection pipeline 121 is provided with a production valve 1211, and the production valve 1211 is used for controlling the opening and closing of the water injection pipeline 121 and the water flow in the water injection pipeline 121; the test pipeline 122 is provided with a test valve 1221, and the power umbrella 220 and the test instrument 210 can enter the oil pipe 112 by opening the test valve 1221; the water return pipeline 123 is provided with a sleeve valve 1231, and the sleeve valve 1231 is used for controlling the opening and closing of the water return pipeline 123 and the water flow in the water return pipeline 123.
Further, the driving device of the present embodiment includes a water injection station 310 and a water injection pump 320 for controlling the water injection intensity of the water injection station 310, the water injection station 310 is connected to the water injection line 121, and the water injection pump 320 is disposed on the water injection line 121.
Further, the dynamic monitoring apparatus 200 of the present embodiment further includes a controller 240, and the controller 240 is connected to the test instrument 210 through the test cable 230 to collect measurement data of the test instrument 210, so as to implement a real-time monitoring function. The test cable 230 is connected to the test instrument 210 through the test pipeline 122, specifically, the power umbrella 220 of the embodiment is connected to the upper end of the test instrument 210, a through hole 2201 for the test cable 230 to pass through is arranged on the power umbrella 220, the test cable 230 is connected to the test instrument after passing through the through hole 2201, and a sealing device can be further arranged between the through hole 2201 and the test cable 230 to ensure sealing.
Further, the water return line 123 of the present embodiment may be connected to a waste water collecting device to collect well-flushing return water discharged from the oil jacket ring in the air, so as to prevent pollution.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A dynamic monitoring system for a horizontal water injection well is characterized by comprising a water injection well and a dynamic monitoring device arranged in the water injection well; the water injection well comprises a well body structure and a Christmas tree, wherein the well body structure is arranged below the Christmas tree and comprises a casing and an oil pipe, the casing and the oil pipe are both connected with the Christmas tree, the oil pipe is arranged in the casing, the oil pipe comprises a vertical section, a bending section and a horizontal section, and the bending section is arranged between the vertical section and the horizontal section; the dynamic monitoring device is arranged in the oil pipe and comprises a testing instrument and a power umbrella fixedly connected with the testing instrument, the cross section area of the power umbrella is larger than that of the testing instrument, and the power umbrella drives the testing instrument to move from the vertical section to the horizontal section under the driving of the driving device.
2. The dynamic monitoring system for horizontal water injection well according to claim 1 is characterized in that the power umbrella is fixedly connected with the testing instrument by means of screw thread connection.
3. The horizontal water injection well dynamic monitoring system of claim 2, wherein a centerline of the powered parachute coincides with a centerline of the test instrument.
4. The dynamic horizontal water injection well monitoring system according to claim 3, wherein the power umbrella is fixed at the upper, middle or lower part of the test instrument.
5. The dynamic horizontal water injection well monitoring system according to claim 1, wherein the cross section of the power umbrella is circular, square or triangular.
6. The dynamic monitoring system for horizontal water injection wells according to claim 1, wherein the power umbrellas are rubber power umbrellas, resin power umbrellas or metal power umbrellas.
7. The horizontal water injection well dynamic monitoring system of any one of claims 1-6, wherein the Christmas tree comprises a water injection line and a test line connected to the tubing and a water return line connected to the casing.
8. The horizontal water injection well dynamic monitoring system according to claim 7, wherein the driving means comprises a water injection station and a water injection pump for controlling the water injection intensity of the water injection station, the water injection station being connected to the water injection line, the water injection pump being arranged on the water injection line.
9. The horizontal water injection well dynamic monitoring system of claim 8, wherein the dynamic monitoring device further comprises a controller, the controller is connected with the test instrument through a test cable, and the test cable is connected with the test instrument through the test pipeline.
10. The system according to claim 9, characterized in that the water return line is connected with a waste water collection device.
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| CN201810785748.5A CN110792415A (en) | 2018-07-17 | 2018-07-17 | Dynamic monitoring system for horizontal water injection well |
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| CN201810785748.5A CN110792415A (en) | 2018-07-17 | 2018-07-17 | Dynamic monitoring system for horizontal water injection well |
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