Multi-medium sampler

By designing a multi-medium sampler, and utilizing components such as the cylinder, sealing seat, and pull rod, static stratification measurement of liquids is achieved, solving the problem of liquid specific gravity measurement and separation in offshore well repair, improving operational efficiency and reducing costs.

CN223500712UActive Publication Date: 2025-10-31CNOOC ENERGY TECHNOLOGY & SERVICES LTD
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Patent Information

Application Number
CN202422839251.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-10-31
Estimated Expiration
2034-11-21

AI Technical Summary

Technical Problem

In offshore well workover operations, existing technologies cannot effectively measure and separate liquids of different specific gravities, resulting in incomplete oil circulation, increased working hours, pollution, and reduced operational efficiency and costs.

Method used

Design a multi-media sampler comprising a cylinder, a sealing seat, a pull rod, a sealing block, a lower positioning and fixing beam, and an elastic element. It is capable of statically measuring the height of liquids with different specific gravities in layers, and achieving liquid separation through the cooperation of the sealing block and the sealing seat.

Benefits of technology

It enables accurate measurement and separation of liquids with different specific gravities, reduces errors, improves operational efficiency, and lowers operational costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multi-medium sampler. Comprising a cylinder provided with an axially-through pipe cavity; the sealing seat is arranged at the lower end of the cylinder body, and a valve hole is formed in the center of the sealing seat; the drawing rod is coaxially arranged in the cylinder body; the sealing block is arranged at the lower end of the drawing rod, and the sealing block is matched with the valve hole and used for sealing the valve hole; the lower positioning and fixing beam is horizontally and transversely arranged at the lower part of the cylinder body, and a center hole for the drawing rod to penetrate through is formed in the center of the lower positioning and fixing beam; and the elastic element is arranged on the lower portion of the drawing rod in a sleeving mode, the lower end of the elastic element abuts against the sealing base, and the upper end of the elastic element abuts against the lower positioning and fixing beam and is used for applying pressure to the sealing block. The utility model has the beneficial effects that double media can be statically layered after entering the cylinder body, and the heights of liquids with different specific gravities can be measured.
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Description

Technical Field

[0001] This utility model relates to the field of oil well completion technology, and in particular to a multi-media sampler. Background Technology

[0002] During routine well workover and abandonment operations at sea, the fluids in the well need to be circulated in both directions before the wellhead is removed. The oil and water circulated from the well return to the mud pit. Due to the limited capacity of the mud pit on the offshore platform, and to avoid affecting subsequent operations, a single pit is usually used for closed-loop circulation. This means that as the circulation time increases, the oil volume in the pit will rise, potentially causing oil to be pumped into the mud pump (resulting in oil recirculation). There are no tools or methods on-site to measure the oil depth. If, unknowingly, the cleaning fluid below the crude oil is pumped out, leaving the pit full of crude oil, this results in ineffective circulation and double contamination (the previously cleaned well section will also be contaminated due to crude oil re-entry) and wasted effort. This significantly increases the work time and impacts efficiency.

[0003] Therefore, there is a method for sampling and measuring the height of liquids with different specific gravities in the presence of two or more media, in order to achieve data support, reduce judgment errors, improve work efficiency, and reduce work costs. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-medium sampler, which is equipped with a cylinder, a sealing seat, a pull rod, a sealing block, a lower positioning and fixing beam and an elastic element, so that the two media can enter the cylinder and remain stationary and separate into layers, and the height of liquids with different specific gravities can be measured.

[0005] To achieve the above objectives, the present invention adopts the following technical solution, including:

[0006] The cylindrical body has an axially penetrating cavity;

[0007] A sealing seat is provided at the lower end of the cylinder, and a valve hole is provided at the center of the sealing seat;

[0008] A pull rod is coaxially disposed inside the cylinder;

[0009] A sealing block is disposed at the lower end of the pull rod, and the sealing block is adapted to the valve hole to seal the valve hole;

[0010] A lower positioning and fixing beam is horizontally arranged at the lower part of the cylinder, and a central hole is provided in the center of the lower positioning and fixing beam for the pull rod to pass through.

[0011] An elastic element is sleeved on the lower part of the pull rod. The lower end of the elastic element abuts against the sealing block, and the upper end of the elastic element abuts against the lower positioning and fixing beam, for applying pressure to the sealing block.

[0012] Preferably, the cylinder is composed of an upper cylinder and a lower cylinder, which are connected by threads, and the lower positioning and fixing beam is located inside the lower cylinder.

[0013] Preferably, it also includes:

[0014] An upper positioning and fixing beam is horizontally arranged on the upper part of the upper cylinder, and a central hole is provided in the center of the upper positioning and fixing beam for the pull rod to pass through.

[0015] Preferably, it also includes:

[0016] A glass viewing window is provided on the wall of the upper cylinder to facilitate observation of the oil-water interface inside the upper cylinder.

[0017] A scale line, located on one side of the glass window, is used to indicate the height of the oil-water interface.

[0018] Preferably, it also includes:

[0019] A pouring spout is located on the upper edge of the cylinder to facilitate the pouring of liquid from the cylinder.

[0020] Preferably, it also includes:

[0021] Handrails are provided on the upper part of the cylinder to facilitate gripping the cylinder.

[0022] Preferably, it also includes:

[0023] A handle for the pull rod, which is threaded to the upper end of the pull rod, is used to facilitate lifting the pull rod.

[0024] Preferably, the lower end of the pull rod is threadedly connected to the sealing block.

[0025] Preferably, the elastic element is a spring.

[0026] Preferably, the lower part of the valve hole is gradually narrowed, and a sealing ring is provided between the sealing block and the sealing seat.

[0027] The beneficial effects of this utility model are: it is equipped with a cylinder, a sealing seat, a pull rod, a sealing block, a lower positioning and fixing beam, and an elastic element, which allows dual media to enter the cylinder and then stand still and separate into layers, and measure the height of liquids with different specific gravities. Attached Figure Description

[0028] Figure 1This is a perspective view of a multi-media sampler according to the present invention.

[0029] Figure 2 This is a cross-sectional view of a multi-media sampler according to the present invention. Detailed Implementation

[0030] The utility model will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0031] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0032] like Figure 1-2 As shown, a multi-media sampler 1 according to this utility model includes:

[0033] The cylinder 110 has an axially penetrating cavity. Preferably, the cylinder 110 consists of an upper cylinder 111 and a lower cylinder 112, which are connected by threads. The lower positioning and fixing beam 113 is located inside the lower cylinder 112. More preferably, it also includes: an upper positioning and fixing beam 114, horizontally arranged on the upper part of the upper cylinder 111, with a central hole at its center for the pull rod to pass through; a glass window 115, located on the wall of the upper cylinder 111, for easy observation of the oil-water interface inside the upper cylinder 111; and a scale line 116, located on one side of the glass window 115, for indicating the height of the oil-water interface; and a pouring spout 117, located at the upper edge of the cylinder 110, for easy pouring of liquid from the cylinder 110. A handrail 118 is provided on the upper part of the cylinder 110 for easy gripping of the cylinder 110.

[0034] A sealing seat 120 is disposed at the lower end of the cylinder 110, and a valve hole 121 is provided at the center of the sealing seat 120. Preferably, the lower part of the valve hole 121 is gradually narrowed, and a sealing ring 122 is provided between the sealing block 140 and the sealing seat 120.

[0035] A pull rod 130 is coaxially disposed within the cylinder 110. Preferably, it further includes a pull rod handle 131, which is threadedly connected to the upper end of the pull rod 130 for facilitating the lifting of the pull rod 130. More preferably, the lower end of the pull rod 130 is threadedly connected to the sealing block 140.

[0036] A sealing block 140 is disposed at the lower end of the pull rod 130. The sealing block 140 is adapted to the valve hole 121 and is used to seal the valve hole 121.

[0037] The lower positioning and fixing beam 113 is horizontally arranged at the lower part of the cylinder 110, and a central hole is provided at the center of the lower positioning and fixing beam 113 for the pull rod 130 to pass through.

[0038] An elastic element 150 is sleeved on the lower part of the pull rod 130. The lower end of the elastic element 150 abuts against the sealing block 140, and the upper end of the elastic element 150 abuts against the lower positioning and fixing beam 113, for applying pressure to the sealing block 140.

[0039] During use, before immersion in the liquid, pull up the pull rod 130 to lift the sealing block 140 away from the sealing seat 120. Insert the multi-medium sampler 1 into the liquid to be tested, then release the pull rod 130. The sealing block seals under the elastic force of the elastic element 150 and the gravity of the liquid itself. Remove the multi-medium sampler 1 and measure the depth of the oil to be tested, which is the oil-water interface depth in the mud pit, according to the glass window 115 and scale line 116 on the cylinder 110. Due to the different specific gravities of the liquids, the heavier liquid is separated and discharged by separating the sealing block 140 and the sealing seat 120, while the lighter liquid at the top can be collected from the pouring port 117.

[0040] In another embodiment, the cylinder is composed of an upper cylinder 111 and a lower cylinder 112, which are connected by threads, and the lower positioning and fixing beam 113 is located inside the lower cylinder 112.

[0041] In another embodiment, it also includes:

[0042] The upper positioning and fixing beam 114 is horizontally arranged on the upper part of the upper cylinder 111, and a central hole is provided in the center of the upper positioning and fixing beam 114 for the pull rod 130 to pass through.

[0043] In another embodiment, it also includes:

[0044] A glass viewing window 115 is provided on the cylinder wall of the upper cylinder 111 to facilitate observation of the oil-water interface inside the upper cylinder 111.

[0045] A scale line 116 is provided on one side of the glass window 115 to indicate the height of the oil-water interface.

[0046] In another embodiment, it also includes:

[0047] A pouring port 117 is provided on the upper edge of the cylinder 110 to facilitate pouring out the liquid from the cylinder 110.

[0048] In another embodiment, it also includes:

[0049] A handrail 118 is provided on the upper part of the cylinder 110 for easy gripping of the cylinder 110.

[0050] In another embodiment, it also includes:

[0051] The handle 131 of the pull rod is threaded to the upper end of the pull rod 130 and is used to facilitate lifting the pull rod 130.

[0052] In another embodiment, the lower end of the pull rod 130 is threadedly connected to the sealing block 140.

[0053] In another embodiment, the elastic element 150 is a spring.

[0054] In another embodiment, the lower part of the valve hole 121 is gradually narrowed, and a sealing ring 122 is provided between the sealing block 140 and the sealing seat 120.

[0055] In summary, this utility model provides a multi-medium sampler 1, which includes a cylinder, a sealing seat, a pull rod, a sealing block, a lower positioning and fixing beam, and an elastic element. It allows two media to enter the cylinder and then remain stationary and separate into layers, allowing for the measurement of the height of liquids with different specific gravities.

[0056] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A multi-media sampler, characterized in that, include: The cylindrical body has an axially penetrating cavity; A sealing seat is provided at the lower end of the cylinder, and a valve hole is provided at the center of the sealing seat; A pull rod is coaxially disposed inside the cylinder; A sealing block is disposed at the lower end of the pull rod, and the sealing block is adapted to the valve hole to seal the valve hole; A lower positioning and fixing beam is horizontally arranged at the lower part of the cylinder, and a central hole is provided in the center of the lower positioning and fixing beam for the pull rod to pass through. An elastic element is sleeved on the lower part of the pull rod. The lower end of the elastic element abuts against the sealing block, and the upper end of the elastic element abuts against the lower positioning and fixing beam, for applying pressure to the sealing block.

2. The multi-media sampler according to claim 1, characterized in that: The cylinder is composed of an upper cylinder and a lower cylinder, which are connected by threads, and the lower positioning and fixing beam is located inside the lower cylinder.

3. The multi-media sampler according to claim 2, characterized in that, Also includes: An upper positioning and fixing beam is horizontally arranged on the upper part of the upper cylinder, and a central hole is provided in the center of the upper positioning and fixing beam for the pull rod to pass through.

4. The multi-media sampler according to claim 2, characterized in that, Also includes: A glass viewing window is provided on the wall of the upper cylinder to facilitate observation of the oil-water interface inside the upper cylinder. A scale line, located on one side of the glass window, is used to indicate the height of the oil-water interface.

5. The multi-media sampler according to claim 1 or 2, characterized in that, Also includes: A pouring spout is located on the upper edge of the cylinder to facilitate the pouring of liquid from the cylinder.

6. The multi-media sampler according to claim 1 or 2, characterized in that, Also includes: Handrails are provided on the upper part of the cylinder to facilitate gripping the cylinder.

7. The multi-media sampler according to claim 1 or 2, characterized in that, Also includes: A handle for the pull rod, which is threaded to the upper end of the pull rod, is used to facilitate lifting the pull rod.

8. The multi-media sampler according to claim 1 or 2, characterized in that: The lower end of the pull rod is threadedly connected to the sealing block.

9. The multi-media sampler according to claim 1 or 2, characterized in that: The elastic element is a spring.

10. The multi-media sampler according to claim 1, characterized in that: The lower part of the valve hole is gradually narrowed, and a sealing ring is provided between the sealing block and the sealing seat.