CN112963141B - A high-fidelity monitoring system for layered isolation - Google Patents

Abstract

The invention discloses a layered packing high-fidelity monitoring system which comprises a water injection pump, a high-pressure ball valve, a computer terminal and a digital display pressure gauge, wherein one side of the water injection pump is connected with an upper water injection line, the other end of the upper water injection line is connected with the high-pressure ball valve and the digital display pressure gauge, the upper water injection line is simultaneously connected with an upper bag body, the bottom of the upper bag body is connected with a steel wire rope, the other end of the steel wire rope is connected with a lower bag body, and steel pipes are embedded and arranged on the upper bag body and the lower bag body. According to the invention, the capsule body is sleeved outside the steel pipe, water can be injected into the capsule body through the water injection line, and the pressure generated during water injection can be monitored through the digital display pressure gauge, so that the contact state of the capsule body and the well wall can be conveniently observed, the capsule body can be sealed and unsealed in the well wall, the observed data is more similar to the real data when no drilling is performed, and the reusability of the instrument is improved.

Description

A high-fidelity monitoring system for layered isolation

technical field

The invention relates to the technical field of deep well isolation monitoring, in particular to a layered isolation high-fidelity monitoring system.

technical background

In geological work, it is necessary to use probes to detect the flow velocity and direction of groundwater to reveal the occurrence characteristics, movement rules and distribution conditions of the groundwater system. Accurately understand the characteristics of water flow in fractures, so the layered water sealing technology is the key to improving the research accuracy, but there are still some problems in the existing layered water sealing technology:

1. The traditional water-stop technology in my country includes kelp water-stop, clay ball water-stop, bentonite water-stop ring, etc., but the water-stop effect is not stable and is not suitable for deep hydrogeological holes to form wells, and the quality of downhole isolation is difficult to guarantee. If using The grouting process of water-stopping methods such as cement grouting sealing, polymer foam material sealing and self-expanding plugging device is cumbersome and expensive;

2. There is also a technology that uses a metal structure with certain elasticity to make an umbrella structure, and a layer of water-absorbing rubber expands the coat. The bending of the umbrella pushes the water-absorbing rubber closer to the well wall, and the water-absorbing rubber expands to complete the seal. The disadvantage is that the water-absorbing rubber does not Incomplete water isolation, there is water exchange between the upper and lower aquifers, only soft isolation can be achieved, and hard isolation cannot be achieved. At the same time, none of the above isolation technologies can realize the closed monitoring of deep well monitoring instruments in the isolated space, and cannot realize the monitoring of monitoring instruments. Safe storage, stability monitoring and safe extraction in packer.

Therefore, the present invention proposes a layered isolation high-fidelity monitoring system in order to solve the above-mentioned problems.

Contents of the invention

The object of the present invention is to provide a layered isolation high-fidelity monitoring system for the above-mentioned defects in the prior art. To solve the above-mentioned background technology, the water-stopping effect of the traditional water-stopping technology in the market is unstable, and it is not suitable for large-depth hydrogeological holes to form wells. It is difficult to guarantee the quality of downhole isolation. The slurry process is cumbersome and expensive, and it cannot realize the closed monitoring of deep well monitoring instruments in the isolated space, and cannot realize the problems of safe storage, stable monitoring and safe removal of monitoring instruments in the packer.

Above-mentioned purpose of the present invention is achieved through the following technical solutions:

A high-fidelity monitoring system for layered isolation, including a water injection pump, a high-pressure ball valve, a computer terminal and a digital display pressure gauge. One side of the water injection pump is connected to an upper water injection line, and the other end of the upper water injection line is connected to a high-pressure ball valve and a digital display. The pressure gauge is connected, and the upper water injection line is connected with the upper bladder at the same time. The bottom of the upper bladder is connected with a steel wire rope, and the other end of the wire rope is connected with the lower bladder, and the upper bladder and the lower bladder are embedded with a Steel pipe, the upper capsule is connected to the lower capsule through the middle water injection line, and the computer terminal is connected with communication line 1 and communication line 2, and communication line 1 runs through the steel pipe embedded in the upper capsule and is connected with probe 1, The communication line 2 runs through the steel pipe embedded in the upper capsule and the steel pipe embedded in the lower capsule in turn, and is connected with the probe 2, and the two ends of the steel pipe are connected with water-stop devices;

Wherein, the high-pressure ball valve and the digital display pressure gauge are fixedly connected with the upper water injection line, and the high-pressure ball valve and the digital display pressure gauge are located between the water injection pump and the upper bladder, and the upper bladder and the lower bladder are bag-type water injection bladders.

Preferably, there are two steel wire ropes, and the steel wire ropes are arranged symmetrically with respect to the longitudinal central axis of the upper bladder and the lower bladder.

Preferably, the water stop device includes rubber plugs arranged at both ends of the steel pipe, a pressing plate covered on the rubber plug, and a compression cover pressed on the pressing plate and connected to the end of the steel pipe.

Preferably, the rubber plug is set in two pieces, and the rubber plug is arranged in a tapered shape with a wide outer end and a narrow inner end inside the steel pipe, and there is a round hole in the middle of the rubber plug that can pass through the signal line, and the inside of the rubber plug is connected to the The signal line is in close contact, while the side of the rubber plug is in close contact with the inner wall of the steel pipe.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. In the present invention, the capsule is installed outside the steel pipe, and the capsule can be injected with water through the water injection line, and the pressure generated during water injection can be monitored through the digital display pressure gauge, so as to facilitate the observation of the contact state between the capsule and the well wall, so that The capsule can be set and unsealed in the well wall, making the observed data closer to the real data when the hole is not drilled, and improving the reusability of the instrument;

2. The present invention forms a tightly sealed space and a lower monitoring space where monitoring instruments such as probes can be placed through the arrangement of steel pipes and water-stop devices. It does not affect the normal monitoring of monitoring instruments during use, and two monitoring instruments can be placed at the same time. Doing the comparative experiment of the same drilling at the same time can greatly improve the efficiency of the experimental test and the credibility of the experiment.

Description of drawings

Fig. 1 is a schematic structural view of the overall front view of the present invention;

Fig. 2 is a schematic diagram of the connection structure between the upper capsule body and the steel pipe of the present invention;

Fig. 3 is a schematic diagram of the connection structure between the pressing plate and the rubber stopper of the present invention.

In the figure: 1. Water injection pump; 2. High pressure ball valve; 3. Computer terminal; 4. Digital display pressure gauge; 5. Upper water injection line; 6. Communication line 2; 7. Water stop device; 8. Upper capsule; 9 1. Communication line 1; 10. Intermediate water injection line; 11. Probe 1; 12. Steel wire rope; 13. Lower capsule; 14. Probe 2; 15. Steel pipe; .

Detailed ways

In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Please refer to Figure 1-3, this embodiment provides the following technical solutions:

A high-fidelity monitoring system for layered isolation, including a water injection pump 1, a high-pressure ball valve 2, a computer terminal 3, and a digital display pressure gauge 4. One side of the water injection pump 1 is connected to an upper water injection line 5, and the other end of the upper water injection line 5 is connected to the The high-pressure ball valve 2 is connected with the digital display pressure gauge 4, and the upper water injection line 5 is connected with the upper capsule 8 at the same time, the bottom of the upper capsule 8 is connected with a steel wire rope 12, and the other end of the steel rope 12 is connected with the lower capsule 13, and The capsule body 8 and the lower capsule body 13 are embedded with a steel pipe 15, the upper capsule body 8 is connected with the lower capsule body 13 through the intermediate water injection line 10, and the computer terminal 3 is connected with a communication line 9 and a communication line 2 6 , and the communication line one 9 runs through the steel pipe 15 embedded in the upper capsule body 8 and is connected with the probe one 11, and the communication line two 6 runs through the steel pipe 15 embedded in the upper capsule body 8 and the steel pipe 15 embedded in the lower capsule body 13 and is connected with a probe Two 14, the two ends of the steel pipe 15 are connected with a water stop device 7;

In this embodiment, the high-pressure ball valve 2 and the digital display pressure gauge 4 are fixedly connected to the upper water injection line 5, and the high-pressure ball valve 2 and the digital display pressure gauge 4 are located between the water injection pump 1 and the upper bladder 8, and the upper bladder 8 and The lower capsule 13 is a bag-type water injection capsule, which is convenient for setting and unsealing the device through the upper capsule 8 and the lower capsule 13. The first probe 11 and the second probe 14 are both water quality probes, and can also be other monitoring instruments;

In this embodiment, probe one 11 is located between the upper capsule body 8 and the lower capsule body 13, and probe two 14 is located below the lower capsule body 13, which is convenient for monitoring different positions, and the effect is better;

In this embodiment, there are two steel wire ropes 12, and the steel wire ropes 12 are arranged symmetrically about the longitudinal central axis of the upper capsule body 8 and the lower capsule body 13, so that the connection between the upper capsule body 8 and the lower capsule body 13 is stable;

In this embodiment, the water stop device 7 includes rubber plugs 18 arranged at both ends of the steel pipe 15, a pressing plate 17 covered on the rubber plug 18, and a pressing plate 17 mounted on the pressing plate 17 and connected to the end of the steel pipe 15. The cover 16 and the pressing plate 17 are located between the pressing cover 16 and the rubber stopper 18, and the upper and lower sides of the pressing plate 17 are in close contact with the pressing cover 16 and the rubber stopper 18 respectively, and the pressing cover 16, the pressing plate 17 and the rubber stopper 18 are in close contact with the upper part The transverse central axis of the capsule body 8 and the lower capsule body 13 are arranged symmetrically, and the sealing performance of the interior of the steel pipe 15 is higher through the setting of the compression cover 16, the pressure plate 17 and the rubber stopper 18;

In this embodiment, the rubber plug 18 is arranged in a two-petal type, and the rubber plug 18 is arranged in a tapered shape with a wide outer end and a narrow inner end inside the steel pipe 15, and there is a circular hole in the middle of the rubber plug 18 that can pass through the signal line, and The inside of the rubber plug 18 is in close contact with the signal line, and the side of the rubber plug 18 is in close contact with the inner wall of the steel pipe 15, so that the rubber plug 18 can seal and waterproof the inside of the steel pipe 15.

Working principle: According to Figure 1-3, when using this high-fidelity monitoring system for layered isolation, the staff first connects the upper capsule 8 and the lower capsule 13 through the wire rope 12 outside the well, and connects the probe 11 with the Connect the communication line one 9, then pass it through the steel pipe 15 in the upper capsule body 8, place the probe one 11 between the upper capsule body 8 and the lower capsule body 13, and then connect the probe two 14 with the communication line two 6 , put the probe two 14 through the steel pipe 15 in the upper capsule body 8 and the lower capsule body 13, place the probe two 14 under the lower capsule body 13, and then connect the communication line one 9 and the communication line two 6 with the computer terminal 3 Install the rubber stopper 18, the pressing plate 17 and the pressing cover 16 in sequence at the two ends of the upper capsule 8 and the lower capsule 13 to form a waterproof water-stop device 7, and then connect the lower end of the upper water injection line 5 with the upper capsule 8 , the upper end of the upper water injection line 5 is sequentially connected with the digital display pressure gauge 4, the high pressure ball valve 2 and the water injection pump 1, and then the upper end of the middle water injection line 10 is connected with the upper capsule 8, and the lower end is connected with the lower capsule 13, and the completion The installation of a high-fidelity monitoring system for layered containment;

According to Figure 1-3, a layered isolation high-fidelity monitoring system is installed and lowered into the geological well as a whole. When a certain depth is reached, the high-pressure ball valve 2 is opened, and the water injection pump 1 is used to pump the upper capsule 8 and the lower capsule. 13 Carry out water injection to expand the volume of the capsule body. When the capsule body contacts the well wall, the pressure begins to increase significantly. Observe the digital display pressure gauge 4. When the pressure reaches the specified value, close the high-pressure ball valve 2 and observe the digital display pressure gauge 4. Numerical value, if the numerical value does not change significantly, it means that the capsule has no volume change, and the setting of this layered seal high-fidelity monitoring system can be completed. After the monitoring is completed, the high-pressure ball valve 2 is opened to release water, and the volume of the capsule shrinks accordingly. When the water no longer flows out and the number of the digital display pressure gauge 4 has no obvious change, the unsealing is completed, and then this kind of layered isolation high-fidelity monitoring system can be taken out of the well. For geological wells of different sizes, different sizes can be used. For different communication lines, different sizes of water stop devices 7 can be used, and for different monitoring lengths, different sizes of steel wire ropes 12 and intermediate water injection lines 10 can be used to make the device applicable to a wider range , the content not described in detail in this specification belongs to the prior art known to those skilled in the art.

It should be pointed out that the specific embodiments described in the present invention are only examples to illustrate the spirit of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (2)

1. The utility model provides a layering seals high fidelity monitoring system, includes water injection pump (1), high-pressure ball valve (2), computer terminal (3) and digital display manometer (4), its characterized in that: the water injection pump (1) is connected with one end of an upper water injection line (5), the other end of the upper water injection line (5) is connected with an upper bag body (8), a high-pressure ball valve (2) and a digital display pressure gauge (4) are arranged on the upper water injection line (5), the bottom of the upper bag body (8) is connected with one end of a steel wire rope (12), the other end of the steel wire rope (12) is connected with a lower bag body (13), steel pipes (15) are embedded on the upper bag body (8) and the lower bag body (13), the upper bag body (8) is connected with the lower bag body (13) through a middle water injection line (10), a first communication line (9) and a second communication line (6) are connected on a computer terminal (3), the first communication line (9) penetrates through the steel pipes (15) embedded in the upper bag body (8) to be connected with a first probe (11), and the second communication line (6) penetrates through the steel pipes (15) embedded in sequence to be connected with the second probe (15) embedded in the lower bag body (13) to be connected with the second probe (15);

wherein the first probe (11) is positioned between the upper bag body (8) and the lower bag body (13), the second probe (14) is positioned below the lower bag body (13),

the upper bag body (8) and the lower bag body (13) are bag type water injection bags,

the water stopping device (7) comprises rubber plugs (18) arranged in two ends of the steel pipe (15), pressing plates (17) arranged on the rubber plugs (18) in a covering mode, and pressing covers (16) arranged on the pressing plates (17) in a pressing mode and connected with the end portions of the steel pipe (15).

2. The hierarchical pack hi-fi monitoring system of claim 1, wherein: the rubber plug (18) is arranged in a two-piece mode, the rubber plug (18) is arranged in a conical mode that the outer end of the rubber plug is wide, the inner end of the rubber plug is narrow in the steel tube (15), a round hole through which a signal line can pass is reserved in the middle of the rubber plug (18), the rubber plug (18) is in tight contact with the signal line, and meanwhile the side portion of the rubber plug (18) is in tight contact with the inner wall of the steel tube (15).