CN114753828A

CN114753828A - Intelligent oil testing working barrel and oil testing system

Info

Publication number: CN114753828A
Application number: CN202110039046.4A
Authority: CN
Inventors: 王金龙; 薛承文; 石善志; 谢斌; 刘涛; 马都都; 王如燕; 吴越; 刘利; 张潇男
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-07-15

Abstract

The invention provides an intelligent oil testing working barrel and an oil testing system. Intelligence oil testing working barrel, including the barrel, the both ends of barrel communicate with different oil pipe respectively, and the circumference lateral wall that the barrel is close to ground one end have with the side direction through-hole of the inside intercommunication of barrel, and intelligence oil testing working barrel still including setting up respectively inside the barrel: the central valve is arranged at one end of the cylinder body far away from the lateral through hole, and when the central valve is closed, the central valve divides the interior of the cylinder body into two independent spaces which are respectively positioned at two sides of the central valve; the lateral valve is arranged at one end of the cylinder body close to the lateral through hole, and when the lateral valve is opened, the lateral through hole is communicated with the inside of the cylinder body; the sampling structure is close to the lateral through hole relative to the central valve; the driving structure is arranged on the inner side wall of the barrel and is in driving connection with the central valve, the lateral valve and the sampling structure respectively. The invention solves the problem of complex oil testing process in the prior art.

Description

Intelligent oil testing working barrel and oil testing system

Technical Field

The invention relates to the field of oil exploitation equipment, in particular to an intelligent oil testing working barrel and an oil testing system.

Background

In the exploration and evaluation process of oil and gas fields, because the oil and gas properties and the productivity of each reservoir are unknown, the existing oil testing process completely adopts layer-by-layer upward return or downward return oil testing, namely, independent oil testing and production are carried out on each layer, and data support is provided for subsequent development and evaluation (only upward return oil testing is described in detail). And after the oil testing of the S1 layer is finished, injecting 5-10 m of ash after closing the lower bridge plug of the perforation layer section, and then performing the oil testing operation of the upper layer (return) again (repeating the oil testing step of the S1 layer).

For exploration wells and evaluation wells, because the fluid properties and productivity of each layer are unknown, independent oil testing and production testing needs to be carried out on each layer, for example, after well drilling, core taking and well logging interpretation, two layers are found to be better in display and possibly contain industrial oil flow, and the fluid properties and productivity need to be tested and reduced on the two layers. The two layers are respectively defined as an S1 layer and an S2 layer from bottom to top, oil testing is firstly carried out on the S1 layer, and the single-layer conventional oil testing process comprises the following steps:

1) deepening the bottom of the exploration well by using an oil pipe;

2) perforating by oil pipe transmission, perforating S1 layers, and breaking blockage;

3) lowering a fracturing string, and withdrawing liquid to obtain the yield;

4) measuring the temperature and the flow pressure of the produced layer and the temperature gradient along the shaft by a lower steel wire;

5) performing underground PVT sampling by using a steel wire vehicle lower sampler;

6) The bridge plug under the oil pipe closes the S1 layer.

After completion of the sealing, the oil testing operation of S2 layers is performed (the operation procedure of S1 is repeated), and finally, the bridge plug is removed to perform the oil well production.

In the prior art, each layer of oil testing operation needs to be carried out such as well bottom exploration, oil pipe transmission perforation, fracturing string lowering, pressure gradient measurement, pressure recovery and underground PVT sampling, meanwhile, a bridge plug needs to be lowered to seal a stratum before going back, and after the oil testing is finished, the bridge plug is removed by drilling through a continuous oil pipe.

Therefore, the prior art has the problem of complex oil testing process.

Disclosure of Invention

The invention mainly aims to provide an intelligent oil testing working barrel and an oil testing system, and aims to solve the problem that an oil testing process is complex in the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided an intelligent oil testing working barrel, comprising a barrel body, two ends of the barrel body are respectively communicated with different oil pipes, and a circumferential side wall of one end of the barrel body close to the ground has a lateral through hole communicated with the inside of the barrel body, and the intelligent oil testing working barrel further comprises: the central valve is arranged at one end of the cylinder body far away from the lateral through hole, and when the central valve is closed, the central valve divides the interior of the cylinder body into two independent spaces which are respectively positioned at two sides of the central valve; the lateral valve is arranged at one end of the barrel body close to the lateral through hole, the lateral through hole is communicated with the inside of the barrel body when the lateral valve is opened, and the lateral through hole is sealed by the lateral valve when the lateral valve is closed; the sampling structure is close to the lateral through hole relative to the central valve; the driving structure is arranged on the inner side wall of the barrel and is in driving connection with the central valve, the lateral valve and the sampling structure respectively.

Further, the barrel includes: the main body part is provided with a lateral through hole, and the central valve, the lateral valve, the sampling structure and the driving structure are all arranged inside the main body part; the first joint is connected with one end, far away from the lateral through hole, of the main body part, one end of the first joint extends into the main body part and is connected with the central valve, and when the central valve is opened, the interior of the first joint is communicated with the interior of the main body part; and the second joint is connected with one end, far away from the first joint, of the main body part.

Furthermore, the driving structure comprises a first driving portion, a second driving portion and a third driving portion, the first driving portion is connected with the central valve in a driving mode, the second driving portion is connected with the lateral valve in a driving mode, the third driving portion is connected with the sampling structure in a driving mode, the driving structure further comprises two connector posts, and the two connector posts are arranged at the two ends of the barrel body respectively and are electrically connected with the first driving portion, the second driving portion and the third driving portion respectively.

Further, the one end of connector lug stretches into the inside of barrel, and the other end of connector lug is located the outside of barrel, and the connector lug includes: a cable; the protective tube is sleeved outside the cable; the filling material is filled between the cable and the protection tube; and the sealing structure is sleeved outside the protection tube.

Further, the seal structure includes: at least one seal filler; the first locking device is sleeved on the outer side of the protection tube, an accommodating space is formed between the first locking device and the protection tube, and the sealing filler is arranged in the accommodating space; the packing pressing caps correspond to the sealing packing one by one, the packing pressing caps are arranged in the accommodating space, one end of each packing pressing cap is abutted with the first locking device, and the other end of each packing pressing cap is abutted with the sealing packing; and the second locking device is sleeved at one end of the protection tube, which is far away from the barrel body, and one end of the second locking device, which is close to the barrel body, is abutted against the first locking device.

Further, the lateral valve comprises: the driving structure is in driving connection with the sliding sleeve inner cylinder so as to drive the sliding sleeve inner cylinder to slide along the length direction of the cylinder body; the two sides of the lateral through hole are respectively provided with at least one lateral seal, and the lateral seals are arranged between the sliding sleeve inner cylinder and the cylinder body; when the side valve is closed, one end of the protective sliding sleeve is abutted against the inner side wall of the barrel body, and the other end of the protective sliding sleeve is abutted against the inner barrel of the sliding sleeve; reset spring, reset spring set up between protection sliding sleeve and barrel, reset spring's one end and protection sliding sleeve butt, reset spring's the other end and barrel butt, and reset spring's length direction is the same with the length direction of barrel.

Furthermore, intelligence formation testing work section of thick bamboo still includes the pressure measurement structure, and the pressure measurement structure sets up between central valve and side direction valve.

Furthermore, the pressure measurement structure comprises a measurement and control circuit board, a direct-reading pressure meter and a storage type electronic pressure meter, wherein the measurement and control circuit board is arranged along the length direction of the barrel body, the measurement and control circuit board is connected with the direct-reading pressure meter, and the measurement and control circuit board is close to the central valve relative to the direct-reading pressure meter.

Furthermore, the number of the lateral through holes is two, and the two lateral through holes are symmetrically arranged relative to the axis of the cylinder.

According to another aspect of the invention, a test system is provided, which comprises the above intelligent test working barrel, and the test system further comprises a plurality of oil pipes connected in sequence, wherein two adjacent oil pipes are connected through the intelligent test working barrel.

Further, intelligence oil testing working barrel is a plurality of, and the oil testing system still includes: a plurality of packers are arranged, at least one packer is arranged between two adjacent intelligent oil testing working barrels, and the packers are sleeved on an oil pipe; and the connecting wire penetrates through the packer, and two ends of the connecting wire are respectively electrically connected with the connector lug at one end of each of the two adjacent intelligent oil testing working barrels, which are close to each other.

By applying the technical scheme of the invention, the intelligent oil testing working barrel comprises a barrel body, a central valve, a lateral valve, a sampling structure and a driving structure. The both ends of barrel communicate with different oil pipe respectively, and the circumference lateral wall that the barrel is close to ground one end have with the side direction through-hole of the inside intercommunication of barrel, and intelligent formation testing working barrel still including setting up respectively inside the barrel: the central valve is arranged at one end of the cylinder body far away from the lateral through hole, and when the central valve is closed, the central valve divides the interior of the cylinder body into two independent spaces which are respectively positioned at two sides of the central valve; the lateral valve is arranged at one end of the cylinder body close to the lateral through hole, when the lateral valve is opened, the lateral through hole is communicated with the inside of the cylinder body, and when the lateral valve is closed, the lateral valve seals the lateral through hole; the sampling structure is close to the lateral through hole relative to the central valve; the drive structure sets up the inside wall at the barrel and is connected with center valve, side direction valve and sample structure drive respectively.

When using the intelligent oil testing working barrel of above-mentioned structure, when need carry out the oil testing to the oil reservoir of difference, only need to close the central valve of the intelligent oil testing working barrel that corresponds the oil reservoir and open the side direction valve, and open the central valve of the intelligent oil testing working barrel of other and close the side direction valve, the oil in the oil reservoir that only remains the oil testing like this can enter into the inside of barrel by the side direction valve of the intelligent oil testing working barrel that corresponds, and sample in order to accomplish the oil testing through the sample structure. In this process, the opening and closing of the central valve, and the opening and closing of the lateral valves, are driven by the drive structure, while the sampling structure is also driven by the drive structure. Therefore, the intelligent oil testing working barrel effectively simplifies the oil testing process, and the problem that the oil testing process is complex in the prior art is effectively solved.

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 illustrates a schematic diagram of a smart test cartridge according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a central valve of the intelligent oil testing working barrel in a closed state;

fig. 3 shows a schematic structural diagram of a connector lug of the intelligent oil testing working barrel in the application;

FIG. 4 shows a schematic structural diagram of a side valve of the smart test oil work drum in the present application;

fig. 5 shows a schematic configuration diagram of the oil test system in the present application.

Wherein the figures include the following reference numerals:

10. a barrel; 11. a main body portion; 12. a first joint; 13. a second joint; 20. a central valve; 30. a lateral valve; 31. an inner sleeve of the sliding sleeve; 32. laterally sealing; 33. protecting the sliding sleeve; 34. a return spring; 40. a sampling structure; 50. a drive structure; 51. a first driving section; 52. a second driving section; 53. a third driving section; 60. a connector lug; 61. a cable; 62. protecting the tube; 63. a filler; 64. a sealing structure; 641. sealing and filling; 642. a first locking device; 643. pressing a cap by filling; 644. a second locking device; 70. a measurement and control circuit board; 80. a direct-reading pressure gauge; 90. a storage type electronic pressure gauge; 100. and (4) a packer.

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.

In order to solve the problem that the oil testing process is complex in the prior art, the application provides an intelligent oil testing working barrel and an oil testing system.

Furthermore, as shown in fig. 5, the oil testing system in the present application includes the following intelligent oil testing working cylinders, and the oil testing system further includes a plurality of oil pipes connected in sequence, and two adjacent oil pipes are connected through the intelligent oil testing working cylinders.

Specifically, the intelligent oil testing working barrel is a plurality of, and the oil testing system further comprises a packer 100 and a connecting line. A plurality of packers 100 are arranged, at least one packer 100 is arranged between two adjacent intelligent oil testing working barrels, and the packer 100 is sleeved on an oil pipe; the connecting line passes through the packer 100, and the two ends of the connecting line are respectively and electrically connected with the connector lug 60 at one end of the two adjacent intelligent oil testing working barrels, which are close to each other. By setting the packer 100, it can be effectively ensured that oil in different oil layers can only enter the interior of the oil pipe through the intelligent oil testing working barrel.

As shown in fig. 1 to 4, the intelligent oil testing working cylinder in the present application includes a cylinder body 10, a central valve 20, a lateral valve 30, a sampling structure 40, and a driving structure 50. The both ends of barrel 10 communicate with the oil pipe of difference respectively, and the circumference lateral wall that barrel 10 is close to ground one end have with the side direction through-hole of the inside intercommunication of barrel 10, and intelligent oil testing working barrel still including setting up respectively inside barrel 10: the central valve 20 is arranged at one end of the cylinder 10 far away from the lateral through hole, and when the central valve 20 is closed, the central valve 20 divides the interior of the cylinder 10 into two independent spaces which are respectively positioned at two sides of the central valve 20; the side valve 30 is provided at one end of the cylinder 10 near the side through hole, which communicates with the inside of the cylinder 10 when the side valve 30 is opened, and the side valve 30 seals the side through hole when the side valve 30 is closed; the sampling structure 40 is close to the lateral through hole with respect to the central valve 20; the driving structure 50 is disposed on the inner sidewall of the cylinder 10 and is in driving connection with the central valve 20, the lateral valve 30 and the sampling structure 40, respectively.

When using the intelligence of above-mentioned structure to try oil the working barrel, when need carry out the oil testing to the oil reservoir of difference, only need close the central valve 20 of the intelligence of corresponding oil reservoir and open lateral valve 30, and open the central valve 20 of the working barrel of trying oil of other intelligence and close lateral valve 30, the oil in the oil reservoir that only waits to try oil like this can enter into the inside of barrel 10 by the lateral valve 30 of the intelligent working barrel of trying oil that corresponds, and sample through sample structure 40 in order to accomplish the oil testing. During this process, the opening and closing of the central valve 20, and the opening and closing of the lateral valves 30, are driven by the drive structure 50, while the sampling structure is also driven by the drive structure 50. Therefore, the intelligent oil testing working barrel effectively simplifies the oil testing process, and the problem of complex oil testing process in the prior art is effectively solved.

Specifically, the cartridge 10 includes a main body portion 11, a first joint 12, and a second joint 13. The main body part 11 is provided with a lateral through hole, and the central valve 20, the lateral valve 30, the sampling structure 40 and the driving structure 50 are all arranged inside the main body part 11; the first joint 12 is connected with one end of the main body part 11 far away from the lateral through hole, one end of the first joint 12 extends into the main body part 11 and is connected with the central valve 20, and when the central valve 20 is opened, the interior of the first joint 12 is communicated with the interior of the main body part 11; the second joint 13 is connected to an end of the body 11 remote from the first joint 12. The arrangement of the first joint 12 and the second joint 13 can effectively ensure that the intelligent oil testing working barrel can be connected with an oil pipe more easily.

Specifically, the driving structure 50 includes a first driving portion 51, a second driving portion 52 and a third driving portion 53, the first driving portion 51 is in driving connection with the central valve 20, the second driving portion 52 is in driving connection with the lateral valve 30, the third driving portion 53 is in driving connection with the sampling structure 40, the driving structure 50 further includes two connector lugs 60, and the two connector lugs 60 are respectively disposed at two ends of the barrel 10 and are respectively electrically connected with the first driving portion 51, the second driving portion 52 and the third driving portion 53. Through the arrangement, the driving structure 50 can be effectively ensured to respectively drive the central valve 20, the lateral valves 30 and the sampling structure 40, so that the service performance of the intelligent oil testing working barrel is effectively ensured.

Specifically, one end of the connector lug 60 extends into the inside of the barrel 10, and the other end of the connector lug 60 is located outside the barrel 10, and the connector lug 60 includes: cable 61, protective tube 62, filler 63, and seal 64. The protective tube 62 is sleeved outside the cable 61; the filler 63 is filled between the cable 61 and the protective tube 62; the seal structure 64 is fitted around the outside of the protection tube 62.

Specifically, the seal structure 64 includes: at least one sealing packing 641; the first locking device 642 is sleeved on the outer side of the protection tube 62, an accommodating space is formed between the first locking device 642 and the protection tube 62, and the sealing filler 641 is arranged in the accommodating space; at least one packing pressure cap 643, wherein the packing pressure cap 643 corresponds to the sealing packing 641 one by one, the packing pressure cap 643 is arranged in the accommodating space, one end of the packing pressure cap 643 abuts against the first locking device 642, and the other end of the packing pressure cap 643 abuts against the sealing packing 641; and the second locking device 644 is sleeved at one end of the protection tube 62 far away from the cylinder body 10, and one end of the second locking device 644 close to the cylinder body 10 is abutted against the first locking device 642. Through such an arrangement, the three-stage sealing structure 64 of the connector lug 60 can be realized, so that the liquid inlet of the connector lug 60 can be effectively prevented, and the short circuit of the connector lug 60 can be prevented.

Specifically, the lateral valve 30 includes a sleeve inner cylinder 31, a lateral seal 32, a protective sleeve 33, and a return spring 34. The driving structure 50 is in driving connection with the sliding sleeve inner cylinder 31 to drive the sliding sleeve inner cylinder 31 to slide along the length direction of the cylinder 10; at least one lateral seal 32 is respectively arranged on two sides of the lateral through hole, and the lateral seal 32 is arranged between the sliding sleeve inner cylinder 31 and the cylinder body 10; when the side valve 30 is closed, one end of the protective sliding sleeve 33 is abutted against the inner side wall of the cylinder 10, and the other end of the protective sliding sleeve 33 is abutted against the sliding sleeve inner cylinder 31; the return spring 34 is arranged between the protective sliding sleeve 33 and the cylinder 10, one end of the return spring 34 is abutted against the protective sliding sleeve 33, the other end of the return spring 34 is abutted against the cylinder 10, and the length direction of the return spring 34 is the same as that of the cylinder 10. The lateral seal 32 is effectively protected from the erosive effects of frac sand by the provision of the protective sleeve 33 and the return spring 34.

Specifically, the intelligent oil testing working barrel further comprises a pressure measuring structure, and the pressure measuring structure is arranged between the central valve 20 and the lateral valves 30.

Specifically, the pressure measuring structure includes a measurement and control circuit board 70, a direct-reading pressure gauge 80 and a storage type electronic pressure gauge 90, which are respectively arranged along the length direction of the cylinder 10, the measurement and control circuit board 70 is connected with the direct-reading pressure gauge 80, and the measurement and control circuit board 70 is close to the central valve 20 relative to the direct-reading pressure gauge 80.

In one embodiment of the present application, the direct-reading pressure gauge 80 transmits the monitored downhole pressure and temperature to the surface controller through the cable 61, so as to monitor the downhole temperature and flow pressure in real time, record the downhole temperature and flow pressure conditions of each system of oil testing, and realize system anticipation and quick decision-making in the oil testing process. The storage type electronic pressure gauge 90 is used as a backup of the direct reading pressure gauge 80, and each function action is controlled by an independent motor.

Preferably, there are two lateral through holes, which are symmetrically arranged with respect to the axis of the cylinder 10.

In one embodiment of the present application, the intelligent oil testing working cylinder is powered by the cable 61 and data transmission is performed, and one intelligent oil testing working cylinder is run into each layer to be tested along with the well entry of the oil pipe. The ground control box controls the opening and closing of the underground intelligent oil testing working barrel, the opening and closing of an oil pipe central channel and underground PVT sampling, fracturing, pilot production and closing and pressure recovery processes through a cable 61.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the problem of complex oil testing process in the prior art is effectively solved;

2. the structure is simple, and the performance is stable;

3. easy to control.

It is to be understood that the above-described embodiments are only a few, and not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

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 exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings 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 other sequences than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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

1. The utility model provides an intelligence test oil working barrel, its characterized in that includes barrel (10), the both ends of barrel (10) communicate with different oil pipes respectively, just circumference lateral wall that barrel (10) is close to ground one end have with the side direction through-hole of the inside intercommunication of barrel (10), just intelligence test oil working barrel is still including setting up respectively barrel (10) inside:

a central valve (20), wherein the central valve (20) is arranged at one end of the barrel body (10) far away from the lateral through hole, when the central valve (20) is closed, the central valve (20) divides the interior of the barrel body (10) into two independent spaces respectively positioned at two sides of the central valve (20);

a lateral valve (30), said lateral valve (30) being arranged at an end of said barrel (10) close to said lateral through hole, said lateral through hole communicating with the interior of said barrel (10) when said lateral valve (30) is open, said lateral valve (30) sealing said lateral through hole when said lateral valve (30) is closed;

A sampling structure (40), said sampling structure (40) being close to said lateral through hole with respect to said central valve (20);

the driving structure (50) is arranged on the inner side wall of the barrel body (10) and is in driving connection with the central valve (20), the lateral valve (30) and the sampling structure (40).

2. An intelligent oil testing working barrel according to claim 1, wherein the barrel body (10) comprises:

a main body portion (11), said main body portion (11) having said lateral through hole, and said central valve (20), said lateral valve (30), said sampling structure (40) and said drive structure (50) all being disposed inside said main body portion (11);

a first joint (12), wherein the first joint (12) is connected with one end of the main body part (11) far away from the lateral through hole, one end of the first joint (12) extends into the interior of the main body part (11) and is connected with the central valve (20), and when the central valve (20) is opened, the interior of the first joint (12) is communicated with the interior of the main body part (11);

a second joint (13), wherein the second joint (13) is connected with one end of the main body part (11) far away from the first joint (12).

3. The intelligent oil testing working barrel according to claim 1, wherein the driving structure (50) comprises a first driving part (51), a second driving part (52) and a third driving part (53), the first driving part (51) is in driving connection with the central valve (20), the second driving part (52) is in driving connection with the lateral valve (30), the third driving part (53) is in driving connection with the sampling structure (40), the driving structure (50) further comprises two connector lugs (60), and the two connector lugs (60) are respectively arranged at two ends of the barrel (10) and are respectively electrically connected with the first driving part (51), the second driving part (52) and the third driving part (53).

4. The intelligent oil testing working barrel according to claim 3, wherein one end of the connector lug (60) extends into the inside of the barrel body (10), the other end of the connector lug (60) is located at the outside of the barrel body (10), and the connector lug (60) comprises:

a cable (61);

a protective tube (62), wherein the protective tube (62) is sleeved outside the cable (61);

a filler (63), the filler (63) being filled between the cable (61) and the protective tube (62);

the sealing structure (64), the sealing structure (64) is sleeved outside the protection tube (62).

5. The intelligent oil testing working barrel according to claim 4, wherein the sealing structure (64) comprises:

at least one sealing packing (641);

the first locking device (642) is sleeved on the outer side of the protection pipe (62), an accommodating space is formed between the first locking device (642) and the protection pipe (62), and the sealing filler (641) is arranged in the accommodating space;

at least one packing pressing cap (643), wherein the packing pressing caps (643) correspond to the sealing packing (641) in a one-to-one mode, the packing pressing caps (643) are arranged in the accommodating space, one end of each packing pressing cap (643) is abutted to the corresponding first locking device (642), and the other end of each packing pressing cap (643) is abutted to the corresponding sealing packing (641);

The second locking device (644) is sleeved at one end, far away from the cylinder body (10), of the protection pipe (62), and one end, close to the cylinder body (10), of the second locking device (644) is abutted to the first locking device (642).

6. An intelligent oil testing mandrel according to claim 1, wherein the lateral valve (30) comprises:

the sliding sleeve inner cylinder (31), the driving structure (50) is in driving connection with the sliding sleeve inner cylinder (31) to drive the sliding sleeve inner cylinder (31) to slide along the length direction of the cylinder body (10);

the two sides of the lateral through hole are respectively provided with at least one lateral seal (32), and the lateral seals (32) are arranged between the sliding sleeve inner cylinder (31) and the cylinder body (10);

when the lateral valve (30) is closed, one end of the protective sliding sleeve (33) is abutted against the inner side wall of the barrel body (10), and the other end of the protective sliding sleeve (33) is abutted against the sliding sleeve inner barrel (31);

reset spring (34), reset spring (34) set up protection sliding sleeve (33) with between barrel (10), reset spring (34) one end with protection sliding sleeve (33) butt, reset spring (34) the other end with barrel (10) butt, just reset spring (34) the length direction with the length direction of barrel (10) is the same.

7. An intelligent testing cylinder according to any of claims 1 to 6, characterized in that it further comprises a pressure measurement structure, which is arranged between the central valve (20) and the lateral valves (30).

8. The intelligent oil testing working barrel according to claim 7, wherein the pressure measuring structure comprises a measurement and control circuit board (70), a direct-reading pressure gauge (80) and a storage type electronic pressure gauge (90) which are respectively arranged along the length direction of the barrel body (10), the measurement and control circuit board (70) is connected with the direct-reading pressure gauge (80), and the measurement and control circuit board (70) is close to the central valve (20) relative to the direct-reading pressure gauge (80).

9. The intelligent oil testing working barrel according to any one of claims 1 to 6, wherein the number of the lateral through holes is two, and the two lateral through holes are symmetrically arranged relative to the axis of the barrel body (10).

10. A test system comprising the intelligent test cylinder of any one of claims 1 to 9, and further comprising a plurality of oil pipes connected in sequence, wherein two adjacent oil pipes are connected by the intelligent test cylinder.

11. The system of claim 10, wherein there are a plurality of intelligent test cylinders, the system further comprising:

a plurality of packers (100), at least one packer (100) is arranged between two adjacent intelligent oil testing working barrels, and the packers (100) are sleeved on the oil pipe;

the connecting wire, the connecting wire passes packer (100), just the both ends of connecting wire are respectively with adjacent two connector lug (60) electricity of the one end that intelligence formation testing working barrel is close to each other is connected.