A new type of offshore ball collecting and grabbing special tool

By designing a new type of special tool for marine soft ball retrieval, and adopting a modular mechanical structure and directional force application design, the safety hazards and low efficiency of traditional pipeline cleaning soft ball retrieval operations have been solved, achieving safe and efficient soft ball retrieval and reducing the risk of oil and gas leaks.

CN224379811UActive Publication Date: 2026-06-19ZHANJIANG BRANCH OF CHINA NATIONAL OFFSHORE OIL CORP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHANJIANG BRANCH OF CHINA NATIONAL OFFSHORE OIL CORP
Filing Date
2025-07-25
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional pipeline cleaning and soft ball recovery operations pose safety hazards, are time-consuming and labor-intensive, and are prone to causing personnel injuries and oil and gas leaks.

Method used

A novel tool for grabbing and retrieving marine pigging balls was designed. It adopts a modular mechanical structure and uses a lead screw and balance tube in conjunction with a planar pressure bearing to achieve directional force application, simplifying the process of removing soft pigging balls.

Benefits of technology

It improves the safety and efficiency of pigging soft ball recovery, reduces the risk of oil and gas leakage, adapts to different sizes of ball recovery cylinders, and has a simple structure that is easy to maintain.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of pipeline operation and maintenance, a novel special tool for offshore ball collecting and grabbing, including crossbeam board, both ends of crossbeam board are equipped with support foot respectively, the balanced pipe vertical through setting in the middle position of crossbeam board, the balanced pipe is inserted with screw rod, both ends of balanced pipe are equipped with the plane pressure bearing of sleeve joint with screw rod respectively, the fixed nut is screwed on screw rod, both sides of fixed nut are equipped with handle symmetry. This tool can make the operating personnel take out the cleaning pipe soft ball in the ball collecting cylinder quickly and safely, effectively reduces the time of the ball collecting cylinder to the outside open, reduces the oil and gas leakage risk.
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Description

Technical Field

[0001] This utility model relates to the field of pipeline operation and maintenance technology, specifically to a new type of special tool for grabbing and retrieving marine pontoons. Background Technology

[0002] Offshore oilfield wellhead platforms transport extracted oil and gas resources to processing centers via subsea pipelines. These critical facilities require strict monthly maintenance procedures. The core of this process is pipeline cleaning, which involves inserting cleaning balls, such as foam balls or PTFE balls, based on the diameter of the subsea pipeline. These balls physically scrape away impurities such as silt, rust, and oil flocculents deposited on the inner wall of the pipeline, effectively maintaining the smoothness of the pipe wall and transportation efficiency, and ensuring the long-term safe operation of the subsea pipeline.

[0003] After cleaning impurities from subsea pipelines, the soft cleaning balls need to be recycled. However, traditional soft cleaning ball recycling operations have significant safety hazards and technical defects. Specifically, operators need to manually pull the soft cleaning balls out of the recycling cylinder with high strength, which is not only time-consuming and labor-intensive, but also prone to causing personnel injuries and oil and gas leaks due to operational errors. Summary of the Invention

[0004] The purpose of this utility model is to provide a new type of special tool for marine pig retrieval, which enables operators to quickly and safely remove the soft pig from the pig retrieval tube, effectively reducing the time the pig retrieval tube is open to the outside and reducing the risk of oil and gas leakage.

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

[0006] A novel marine ball-grabbing tool includes a crossbeam plate with support feet at both ends. A balance tube is vertically inserted through the middle of the crossbeam plate, and a lead screw is inserted into the balance tube. Planar pressure bearings that are sleeved on the lead screw are provided at both ends of the balance tube. A fixing nut is screwed onto the lead screw, and handles are symmetrically provided on both sides of the fixing nut.

[0007] Furthermore, the crossbeam plate includes a middle plate segment, an extension plate segment, and a connector. There are two extension plate segments, which are slidably disposed at both ends of the middle plate segment via the connector. The extension plate segments are configured to slide left and right along the length direction of the middle plate segment. The balance tube is located in the middle position of the middle plate segment, and the two support feet are located on the two extension plate segments in a one-to-one correspondence.

[0008] Furthermore, the upper surface of the intermediate plate segment is provided with a first strip-shaped hole, and the upper surfaces of the two extension plate segments are respectively provided with second strip-shaped holes. The connector is provided with bolts that are inserted into the first strip-shaped hole and the second strip-shaped hole. The bolts detachably connect the extension plate segments to the intermediate plate segment through connecting nuts.

[0009] Furthermore, the bottom end of the support foot is provided with a horizontal pad.

[0010] Furthermore, both handles are angled upwards.

[0011] Furthermore, the top of the lead screw is provided with a polygonal screw head.

[0012] Furthermore, the aforementioned new type of marine ball-grabbing tool is made of stainless steel.

[0013] The beneficial effects of this utility model are:

[0014] 1. This tool allows operators to quickly and safely remove the pigging soft balls from the pig collection tank without the need for brute force, thus avoiding personnel injury accidents, improving the efficiency of pig collection operations, effectively reducing the time the pig collection tank is open to the outside, and reducing the risk of oil and gas leaks.

[0015] 2. This tool has a simple overall structure, small size, light weight, is easy to use, safe and reliable, and all parts can be disassembled for easy replacement and maintenance.

[0016] 3. In response to the limited operating space and stringent safety standards of offshore platforms, this tool, through its modular mechanical structure and directional force application design, enables the safe and efficient recovery of the pipeline cleaning soft ball, providing key technical support for pipeline operation and maintenance in offshore oil and gas fields. Attached Figure Description

[0017] Figure 1 This is a perspective view of a novel marine ball-grabbing tool according to this utility model.

[0018] Figure 2 This is an exploded view of a novel marine ball-grabbing tool according to this utility model.

[0019] Figure 3 This is a schematic diagram of a novel marine ball-grabbing tool connected to a pipeline cleaning soft ball, according to this utility model. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will now be described with reference to the accompanying drawings.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, a novel marine ball-grabbing tool includes a crossbeam plate 1, with support feet 2 at both ends of the crossbeam plate 1. A balance tube 3 is vertically inserted through the middle of the crossbeam plate 1, and a lead screw 4 is inserted into the balance tube 3. Planar pressure bearings 5, which are sleeved with the lead screw 4, are respectively provided at both ends of the balance tube 3. A fixing nut 6 is screwed onto the lead screw 4, and handles 7 are symmetrically provided on both sides of the fixing nut 6.

[0022] When using this tool, manually rotate the lead screw 4 to screw it into the nut seat 11 on the surface of the pigging soft ball 10, so that the lead screw 4 and the pigging soft ball 10 are firmly connected together. Then, straighten the support foot 2, and the operator uses their feet to press the support foot 2 against the edge of the opening of the ball receiving cylinder 12. Use both hands to apply force through the handle 7 to rotate the lead screw 4, causing the pigging soft ball 10 to rotate and be pulled out of the ball receiving cylinder 12. The entire operation does not require manual force to pull out the pigging soft ball 10, avoiding the operator's injury due to bare hands. Even if injuries occur due to uneven force or unstable gripping, this tool can effectively protect the pig collection cylinder 12 and the pigging soft ball 10 inside it, preventing oil and gas leaks. After the pigging soft ball 10 is pulled out of the pig collection cylinder 12, the connection between it and the pigging soft ball 10 can be disengaged by manually rotating the screw 4. The entire operation is simple, stable, and safe. A single person can use this tool to perform the pigging soft ball 10 recovery operation, improving the efficiency of the pig collection operation, effectively reducing the time the pig collection cylinder 12 is open to the outside, and reducing the risk of oil and gas leaks.

[0023] It should be noted that during the process of removing the pigging soft ball 10, the flat pressure bearing 5 is used to bear the force transmitted by the lead screw 4 when it rotates. Together with the balance tube 3, it can prevent the lead screw 4 from shaking or deviating, so that the operator can apply force in a directional manner and smoothly remove the pigging soft ball 10 from the ball receiving tube 12.

[0024] The crossbeam plate 1 includes a middle plate segment 1a, an extension plate segment 1b, and a connector 1c. Two extension plate segments 1b are provided, each slidably mounted at one end of the middle plate segment 1a via the connector 1c. The extension plate segments 1b are configured to slide left and right along the length of the middle plate segment 1a. The balance tube 3 is located in the middle of the middle plate segment 1a, and the two support legs 2 are located on the two extension plate segments 1b respectively. The assembly design of the middle plate segment 1a and the extension plate segments 1b allows the crossbeam plate 1 to extend or shorten as a whole, thereby adapting to different opening sizes of the ball receiving tube 12 and meeting on-site usage requirements.

[0025] The upper surface of the intermediate plate segment 1a is provided with a first strip-shaped hole 1d, and the upper surfaces of the two extension plate segments 1b are respectively provided with second strip-shaped holes 1e. The connector 1c is provided with bolts 101c that are inserted into the first strip-shaped hole 1d and the second strip-shaped hole 1e. The bolts 101c are used to detachably connect the extension plate segments 1b to the intermediate plate segment 1a through connecting nuts 102c. The intermediate plate segment 1a, the extension plate segments 1b, and the connector 1c are designed for detachable assembly, which facilitates quick disassembly and maintenance, allows for free adjustment of the connection state between the intermediate plate segment 1a and the extension plate segments 1b, avoids loosening and disintegration, and ensures the directional auxiliary function of the crossbeam plate 1.

[0026] The bottom end of the support foot 2 is provided with a horizontal pad 8. The horizontal pad 8 can increase the contact area between the bottom end of the support foot 2 and the opening of the ball receiving tube 12, thereby preventing the lead screw 4 from shaking or deviating and ensuring stable directional force application.

[0027] Both handles 7 are angled upwards. The upward-angled handles 7 are easier for operators to grip, thus allowing for better force application and rotation.

[0028] The top of the lead screw 4 is provided with a polygonal screw head 9. The polygonal screw head 9 can provide a point of force, allowing operators to use tools such as wrenches to speed up the rotation of the lead screw 4 and improve the connection efficiency between the lead screw 4 and the cleaning soft ball 10.

[0029] The novel marine ball retrieval tool is made of stainless steel. The stainless steel material prevents corrosion and damage caused by the high salinity and humidity of the marine environment, extending the tool's service life and ensuring it meets high-intensity operational requirements, preventing deformation and damage due to excessive force applied by operators.

Claims

1. A new type of offshore ball collecting and grabbing special tool, comprising a cross beam plate (1), characterized in that: The crossbeam plate (1) is provided with support feet (2) at both ends. The balance tube (3) is vertically inserted in the middle of the crossbeam plate (1). The balance tube (3) is provided with a lead screw (4). The two ends of the balance tube (3) are provided with a plane pressure bearing (5) that is sleeved with the lead screw (4). The lead screw (4) is screwed with a fixing nut (6). The fixing nut (6) is provided with handles (7) symmetrically on both sides.

2. The novel marine ball-grabbing tool according to claim 1, characterized in that: The beam plate (1) includes a middle plate segment (1a), an extension plate segment (1b) and a connector (1c). There are two extension plate segments (1b), which are slidably disposed at both ends of the middle plate segment (1a) through the connector (1c). The extension plate segments (1b) are configured to slide left and right along the length direction of the middle plate segment (1a). The balance tube (3) is located in the middle position of the middle plate segment (1a). The two support feet (2) are located on the two extension plate segments (1b) respectively.

3. The novel marine ball-grabbing tool according to claim 2, characterized in that: The upper surface of the intermediate plate segment (1a) is provided with a first strip hole (1d), and the upper surfaces of the two extension plate segments (1b) are respectively provided with a second strip hole (1e). The connector (1c) is provided with a bolt (101c) inserted into the first strip hole (1d) and the second strip hole (1e). The bolt (101c) is used to detachably connect the extension plate segment (1b) to the intermediate plate segment (1a) through a connecting nut (102c).

4. The novel marine ball-grabbing tool according to claim 1 or 2, characterized in that: The bottom end of the support foot (2) is provided with a horizontal pad (8).

5. The novel marine ball-grabbing tool according to claim 1, characterized in that: Both handles (7) are tilted upwards.

6. The novel marine ball-grabbing tool according to claim 1, characterized in that: The top of the lead screw (4) is provided with a polygonal screw head (9).

7. The novel marine ball-grabbing tool according to claim 1, characterized in that: The new type of marine ball retrieval tool is made of stainless steel.