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Drill rod mud scraper for quick pull-out under complex well conditions and mud scraping method thereof

A mud scraper and drill pipe technology, which is applied to drill pipes, drill pipes, cleaning appliances, etc. to increase the risk of downhole

Active Publication Date: 2020-07-24
青岛中瑞威飞海洋装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a drill pipe mud scraper and its mud scraping method for rapid drilling under complex well conditions, so as to solve the problem that there is no suitable automatic mud scraping equipment in the prior art for rapid drilling under complex well conditions. Solve the problem of manual operation, achieve the purpose of improving downhole safety and reducing the manpower consumption of drilling

Method used

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  • Drill rod mud scraper for quick pull-out under complex well conditions and mud scraping method thereof
  • Drill rod mud scraper for quick pull-out under complex well conditions and mud scraping method thereof
  • Drill rod mud scraper for quick pull-out under complex well conditions and mud scraping method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Such as Figure 1 to Figure 3 The drill pipe mud scraper shown for rapid drilling under complex well conditions includes fasteners 1 for detachable connection to the fixed equipment on the drill floor, mounting parts 3 for installing mud scraping rings 2, and It includes an elastic member 4 connected between the fastener 1 and the mounting part 3; the mud scraping ring 2 is an unclosed ring structure, and the two ends of the mud scraping ring 2 are fixed ends and movable ends respectively. The end is fixedly connected to the mounting part 3, and the movable end is detachably connected to the mounting part 3; when there is no external force, the inner diameter of the mud scraping ring 2 is smaller than the outer diameter of the drill pipe to be scraped.

[0048] In this embodiment, the fastener 1 is preferably a throat hoop or a hoop, and the elastic member 4 is preferably a nylon elastic cord or a belt.

[0049] In this embodiment, the detachable connection between the...

Embodiment 2

[0054] The drill pipe mud scraper used for rapid drilling under complex well conditions is different from Embodiment 1 in that the detachable connection between the movable end and the mounting part in this embodiment is through the chute 7, the slider 8, and the sinker 9 achieve together. Specifically: the surface of the mounting part 3 is provided with a chute 7, and one end of the chute 7 communicates with a sinker 9; the movable end is fixedly connected with a slider 8 that matches the chute 7, and the slider 8 can enter and exit said chute 7 from sinker 9.

[0055] Figure 4 and Figure 5 An embodiment is illustrated: the chute 7 is a dovetail chute, and the chute 7 is in a "U" shape, which may also be called an "η" shape. Image 6 shown with Figure 5 The slide block 8 structure that middle chute 7 matches.

[0056] Figure 7 Another embodiment is illustrated: the chute 7 is a T-shaped groove, and the chute 7 is "U"-shaped, which can also be called "n"-shaped. Fi...

Embodiment 3

[0061] Such as figure 2 and image 3 The shown drill pipe mud scraper for rapid drilling under complex well conditions, on the basis of any of the above-mentioned embodiments, the mounting part 3 includes side one and side two perpendicular to each other, the fixed end, the movable side The ends are connected to side one and side two respectively. Such as image 3 In the embodiment shown, the projection of the mud scraping ring on the horizontal plane can form a substantially closed circle, thus ensuring sufficient mud scraping effect on the outer wall of the drill pipe.

[0062] As shown in the figure, in this embodiment, when the mud scraping ring is set on the drill pipe, the drill pipe is vertical, the mud scraping ring is basically horizontal, the side one is facing the direction of the drill pipe, and the side two is located on the upper surface of the mounting part 3;

[0063] Of course, the second side can also be the lower surface of the mounting part 3, but the s...

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Abstract

The invention discloses a drill rod mud scraper for quick pull-out under complex well conditions and a mud scraping method thereof. The drill rod mud scraper comprises a fastener detachably connectedto drill floor fixing equipment, a mounting piece for mounting a mud scraping ring and an elastic piece connected between the fastener and the mounting piece; the mud scraping ring is of an unclosed annular structure, the two ends of the mud scraping ring are a fixed end and a movable end, the fixed end is fixedly connected to the mounting piece, and the movable end is detachably connected to themounting piece; and when no external force is applied, the inner diameter of the mud scraping ring is smaller than the outer diameter of a rod body of a drill rod to be subjected to mud scraping. Theinvention aims to provide the drill rod mud scraper for quick pull-out under complex well conditions and the mud scraping method thereof, the problem that in the prior art, during quick pull-out or short pulling operation, a mud scraping mode which does not need disassembly, assembly, disc loading and core repairing does not consume manpower of a driller does not exist is solved, underground safety is improved, and meanwhile the purpose of reducing the labor consumption of pulling out of a hole is achieved.

Description

technical field [0001] The invention relates to the field of oil and gas development, in particular to a drill pipe mud scraper and a mud scraping method for rapid drilling under complex well conditions. Background technique [0002] The drill pipe mud scraper is used in the field of oil and gas drilling. It is used to scrape off the drilling fluid attached to the outer wall of the drill pipe during the drilling process, so as to avoid the drill pipe column being pulled out from throwing a large amount of drilling fluid on the drill floor and causing the drill floor to be too dirty. The wellhead of the drill floor has a turntable and a matching bushing. The traditional drill pipe mud scraper is generally used in conjunction with the turntable bushing. When scraping mud is needed, first use a crane or pneumatic winch to take out the bushing, and then put it into the matching mud scraper. , and then reinstall the bushing to carry out the tripping operation. After the drilling...

Claims

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Application Information

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IPC IPC(8): E21B37/02E21B19/18
CPCE21B19/18E21B37/02
Inventor 熊勇熊朝柱
Owner 青岛中瑞威飞海洋装备有限公司