CN210660070U

CN210660070U - Full-diameter long core displacement device for monitoring profile residual oil saturation

Info

Publication number: CN210660070U
Application number: CN201921501371.2U
Authority: CN
Inventors: 张春龙; 王铎; 张春南; 马雁冰
Original assignee: Daqing Yilai Inspection And Detecting Technology Service Co ltd
Current assignee: Daqing Yilai Inspection And Detecting Technology Service Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-06-02
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a long rock core displacement device of full diameter of section surplus oil saturation monitoring, concretely relates to rock core displacement field, there is rock core holder through fixing bolt subassembly demountable installation in the inside including the thermostated container, there is the outside middle container that is located the thermostated container at the top of rock core holder through the fixed intercommunication of pipe, and the bottom intercommunication of middle container has the advection pump, and the water inlet intercommunication of advection pump has the salt solution case, the quantity of middle container has threely, and the equal movable mounting in inside of three middle container has a piston, and is three the inside of middle container is filled salt solution, neutral oil and pure water respectively. The utility model discloses a be provided with neutral oil for neutral oil can regard as water layer regional data contrast, makes the device more have credibility to neutral oil detection, has reduced single group experiment chance too high problem, has practiced thrift the experimental step promptly, also reduces the cost that multiunit data detection caused, has increased the device's practicality.

Description

Full-diameter long core displacement device for monitoring profile residual oil saturation

Technical Field

The utility model relates to a rock core displacement technical field, more specifically say, the utility model specifically is a long rock core displacement device of full diameter of section remaining oil saturation monitoring.

Background

The oil and gas resources are important guarantee for human activities and social development, along with the rapid development of economy, the human needs for the oil and gas resources are increased at a high speed, how to realize the efficient development of oil and gas fields is important content for the development of oil and gas reservoirs, and the supply quantity of the oil and gas resources can be ensured.

At present, oil workers usually adopt indoor physical simulation experiment and numerical simulation technique simulation oil and gas reservoir development dynamic process, and then formulate reasonable development scheme, realize the high-efficient development of oil and gas reservoir, indoor displacement experiment is our the basis of optimizing development parameters such as oil deposit water injection time, the injection volume, injection fluid kind and injection velocity, wherein accurate measurement of oil gas water extraction volume is the core content of whole physical simulation experiment again, be the prerequisite to the correct understanding of oil deposit characteristic, otherwise can lead to the understanding of oil deposit characteristic to appear great deviation, the experimental result does not have actual guiding meaning to the development of oil deposit. The existing oil-gas-water three-phase metering system has the following defects:

firstly, the existing experimental data lack comparative examples for comparison, the contingency of the data is too high, once the data have deviation, the data cannot be obtained, and the credibility is usually achieved by matching with a plurality of groups of experimental data;

secondly, all adopt vacuum environment in current rock core department, however this experimental apparatus needs to involve a large amount of experimental devices, such as pump and motor, and the accuracy of experiment rock core department data has been greatly influenced to outside vibrations.

It is therefore desirable to provide a full diameter long core displacement apparatus that reduces data contingencies and ensures that data records are correct.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a long rock core displacement device of full diameter of section surplus oil saturation monitoring, through being provided with neutral oil, make neutral oil can regard as water layer regional data contrast, make the device more have the credibility to neutral oil detection, it singly organizes the too high problem of experiment contingency to have reduced, the experimental step has been practiced thrift promptly, also reduce the cost that multiunit data detection caused, through establishing the rock core holder into two parts, and utilize stabilizing assembly's setting, make the dismantlement to the rock core region just to accomplish through dismantling the rock core holder, the very big influence of outside vibrations has been avoided experimental rock core department to rock the problem that leads to the data degree of accuracy to reduce, the internal stability has been guaranteed to have been realized under vacuum environment, in order to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a long rock core displacement device of full diameter of section surplus oil saturation monitoring, includes that there is the rock core holder inside of thermostated container through fixing bolt subassembly demountable installation, there is the middle container that is located the thermostated container outside at the top of rock core holder through the fixed intercommunication of pipe, the bottom intercommunication of middle container has the advection pump, the water inlet intercommunication of advection pump has the salt solution case, the quantity of middle container has threely, and the equal movable mounting in inside of three middle container has a piston, threely the inside of middle container is filled respectively has salt solution, neutral oil and pure water, the internally mounted of rock core holder has the rubber protective sheath, the top seal cover of rubber protective sheath is equipped with the seal cover, stabilizing component is all installed to the left and right sides of seal cover, the inside fixed mounting of rubber protective sheath has the baffle, the bottom fixed mounting of rubber protective sheath has, the bottom intercommunication of delivery tube has the graduated flask that is located the thermostated container outside, the output electric connection of delivery tube has the RCL resistivity appearance, the input of RCL resistivity appearance and the top electric connection of seal cover.

In a preferred embodiment, a valve a is fixedly installed on a communicating pipe between the top of the intermediate container and the top of the core holder, and a valve B is fixedly installed on a communicating pipe between the advection pump and the intermediate container.

In a preferred embodiment, the core holder comprises a top cover and a body shell, an unscrewing rotating ring is fixedly sleeved on the outer portion of the top cover, and the other end of the stabilizing assembly is fixedly connected with the inner wall of the top cover.

In a preferred embodiment, the stabilizing assembly comprises a top rod, a protective rod is movably sleeved on the end of the top rod, a thin rod is fixedly mounted on the side surface of the inner cavity of the protective rod, and the other end of the thin rod and the end of the top rod inside the protective rod are mutually sleeved.

In a preferred embodiment, the thin rod is movably sleeved with a connecting spring, and the left end and the right end of the connecting spring are fixedly connected with the side surface of the ejector rod and the inner wall of the protective sleeve rod respectively.

In a preferred embodiment, the fixing bolt assembly comprises a mounting block and a bolt, the mounting block is fixedly mounted on the side surface of the core holder, and a threaded hole matched with the bolt is formed in the mounting block.

In a preferred embodiment, the sealing sleeve comprises a sealing ring and a catheter, the catheter is communicated with the intermediate container, detection wires are mounted at the output end and the input end of the RCL resistivity meter, and one wire extends into the catheter.

The utility model discloses a technological effect and advantage:

1. the utility model has the advantages that the pure water is arranged, so that the pure water can be used for comparing water layer area data, the device has more reliability for neutral oil detection, the problem that the single-group experiment is accidentally too high is reduced, the experiment steps are saved, the cost caused by the detection of the multiple groups of data is reduced, and the practicability of the device is improved;

2. according to the invention, the core holder is divided into two parts, and the stable assembly is arranged, so that the disassembly of the core area can be completed by disassembling the core holder, the problem that the accuracy of data is reduced due to shaking of the experimental core caused by great external vibration is avoided, and the internal stability is ensured to be realized in a vacuum environment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the external structure of fig. 1 according to the present invention.

Fig. 3 is the internal structure schematic diagram of the core holder of the present invention.

Fig. 4 is the schematic diagram of the structure of the core holder of the present invention.

Fig. 5 is the external structure schematic diagram of the core holder of the present invention.

The reference signs are: 1. a thermostat; 2. a fixing bolt assembly; 3. a core holder; 31. sealing sleeves; 32. a stabilizing assembly; 321. a top rod; 322. a connecting spring; 323. a thin rod; 324. protecting the sheath rod; 33. unscrewing the rotating ring; 34. a rubber protective sleeve; 35. a partition plate; 36. a delivery pipe; 4. an intermediate container; 5. a valve A; 6. a valve B; 7. brine; 8. neutral oil; 9. purified water; 10. a piston; 11. a brine tank; 12. a advection pump; 13. a confining pressure pump; 14. a measuring cylinder; 15. RCL resistivity meter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a long rock core displacement device of full diameter of section surplus oil saturation monitoring, includes that the inside of thermostated container 1 has core holder 3 through 2 demountable installation of fixing bolt subassembly, the top of core holder 3 has the middle container 4 that is located thermostated container 1 outside through the fixed intercommunication of pipe, the bottom intercommunication of middle container 4 has advection pump 12, advection pump 12's water inlet intercommunication has brine tank 11, the quantity of middle container 4 has threely, and the equal movable mounting in inside of three middle container 4 has piston 10, threely the inside of middle container 4 is filled respectively has salt solution 7, neutral oil 8 and pure water 9, the internally mounted of core holder 3 has rubber protective cover 34, the top seal cover of rubber protective cover 34 is equipped with seal cover 31, stabilizing component 32 is all installed to the left and right sides of seal cover 31, the inside fixed mounting of rubber protective cover 34 has baffle 35, the bottom fixed mounting of rubber protective sheath 34 has eduction tube 36, the bottom intercommunication of eduction tube 36 has the graduated flask 14 that is located thermostated container 1 outside, the output electric connection of eduction tube 36 has RCL resistivity appearance 15, the input of RCL resistivity appearance 15 and the top electric connection of seal cover 31.

The top of the middle container 4 and the top of the core holder 3 are fixedly provided with an A valve 5, the communicating pipe between the advection pump 12 and the middle container 4 is fixedly provided with a B valve 6, the core holder 3 comprises a top cover and a body shell, the outer part of the top cover is fixedly sleeved with an unscrewing turn ring 33, the other end of the stabilizing component 32 is fixedly connected with the inner wall of the top cover, the stabilizing component 32 comprises a push rod 321, the end part of the push rod 321 is movably sleeved with a protective rod 324, the side surface of the inner cavity of the protective rod 324 is fixedly provided with a thin rod 323, the other end of the thin rod 323 is mutually sleeved with the end part of the push rod 321 positioned inside the protective rod 324, the outer part of the thin rod 323 is movably sleeved with a connecting spring 322, the left end and the right end of the connecting spring 322 are respectively fixedly connected with the side surface of the push rod 321 and the inner wall of the protective rod 324, and the installation block is fixedly installed on the side of the core holder 3, a threaded hole matched with the bolt is formed in the installation block, the seal sleeve 31 comprises a seal ring and a liquid guide pipe, the guide pipe is communicated with the middle container 4, detection wires are installed at the output end and the input end of the RCL resistivity meter 15, and one wire extends into the liquid guide pipe.

The implementation mode is specifically as follows: by arranging the purified water 9, the purified water 9 can be used for comparing water layer regional data, so that the device has more reliability on the detection of the neutral oil 8, the problem that the single-group experiment is accidentally too high is solved, the experiment steps are saved, the cost caused by the detection of multiple groups of data is reduced, and the practicability of the device is improved; through establishing core holder 3 into two parts, and utilize the setting of stabilizing the subassembly 32 for dismantling the core area can just be accomplished through dismantling core holder 3, avoided the very big influence of outside vibrations experiment rock core department to rock the problem that leads to the data accuracy to reduce, guaranteed to realize the internal stability under vacuum environment.

The utility model discloses the theory of operation:

a preparation stage: opening the sealing sleeve 31 to fill the core into the rubber protective sleeve 34, then rotating the unscrewing ring 33 to enable the sealing sleeve 31 to seal the top of the rubber protective sleeve 34, then closing the valve A5 and the valve B6 and respectively filling the three middle containers 4 with saline water 7, neutral oil 8 and purified water 9;

the working stage is as follows: opening the valve A5 and the valve B6, starting the constant-pressure pump 12, the confining pressure pump 13 and the RCL resistivity meter 15, vacuumizing the interior of the core holder 3 through the confining pressure pump 13, ensuring the internal flow of the middle container 4 through the constant-pressure pump 12, sequentially corresponding to the three middle containers 4, performing three experiments, and observing the liquid level of the measuring cylinder 14 and the resistance data of the RCL resistivity meter 15;

and at the end stage, recording data, closing the valve A5, the valve B6, the constant flow pump 12, the confining pressure pump 13 and the RCL resistivity meter 15, waiting for half an hour, taking down the three middle containers 4, cleaning the interiors of the three middle containers, and opening the sealing sleeve 31 to take out the core from the interior of the rubber protective sleeve 34.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. 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 a long rock core displacement device of full diameter of section remaining oil saturation monitoring, has core holder (3) including the inside of thermostated container (1) through fixing bolt subassembly (2) demountable installation, the top of core holder (3) has middle container (4) that are located thermostated container (1) outside through the fixed intercommunication of pipe, the bottom intercommunication of middle container (4) has advection pump (12), the water inlet intercommunication of advection pump (12) has brine tank (11), its characterized in that: the quantity of middle container (4) has threely, and the equal movable mounting in inside of three middle container (4) has piston (10), and is three salt solution (7), neutral oil (8) and pure water (9) are filled respectively to the inside of middle container (4), the internally mounted of rock core holder (3) has rubber protective sheath (34), the sealed cover in top of rubber protective sheath (34) is equipped with seal cover (31), stabilizing component (32) are all installed to the left and right sides of seal cover (31), the inside fixed mounting of rubber protective sheath (34) has baffle (35), the bottom fixed mounting of rubber protective sheath (34) has contact tube (36), the bottom intercommunication of contact tube (36) has graduated flask (14) that are located thermostated container (1) outside, the output electric connection of contact tube (36) has RCL resistivity appearance (15), the input end of the RCL resistivity meter (15) is electrically connected with the top of the sealing sleeve (31).

2. The full-diameter long core displacement device for monitoring profile residual oil saturation according to claim 1, characterized in that: and an A valve (5) is fixedly installed on a communicating pipe between the top of the intermediate container (4) and the top of the rock core holder (3), and a B valve (6) is fixedly installed on a communicating pipe between the advection pump (12) and the intermediate container (4).

3. The full-diameter long core displacement device for monitoring profile residual oil saturation according to claim 1, characterized in that: the core holder (3) comprises a top cover and a casing, a unscrewing rotating ring (33) is fixedly sleeved outside the top cover, and the other end of the stabilizing component (32) is fixedly connected with the inner wall of the top cover.

4. The full-diameter long core displacement device for monitoring profile residual oil saturation according to claim 1, characterized in that: stabilizing assembly (32) and including ejector pin (321), the tip movable sleeve of ejector pin (321) is equipped with protection pole (324), the side fixed mounting of protection pole (324) inner chamber has thin pole (323), the other end of thin pole (323) and the inside ejector pin (321) tip that is located protection pole (324) suit each other.

5. The full-diameter long core displacement device for monitoring profile residual oil saturation according to claim 4, wherein: the outside activity cover of pin (323) is equipped with connecting spring (322), the left and right sides both ends of connecting spring (322) respectively with the side of ejector pin (321) and the inner wall fixed connection of protection sheath pole (324).

6. The full-diameter long core displacement device for monitoring profile residual oil saturation according to claim 1, characterized in that: the fixing bolt assembly (2) comprises an installation block and a bolt, the installation block is fixedly installed on the side face of the core holder (3), and a threaded hole matched with the bolt is formed in the installation block.

7. The full-diameter long core displacement device for monitoring profile residual oil saturation according to claim 1, characterized in that: seal cover (31) include sealing washer and catheter, and pipe and middle container (4) intercommunication each other, the detection wire is all installed to the output and the input of RCL resistivity meter (15), and a wire extends to the inside of catheter.