A scraper system for oil pipe descaling and cleaning
A technology of oil pipe and scraper, which is applied in the direction of cleaning equipment, wellbore/well parts, earthwork drilling and production, etc., and can solve problems such as insufficient pre-tightening force, large friction resistance, and decreased elasticity
Active Publication Date: 2018-03-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, there are problems of insufficient pre-tightening force and decreased elastic force during use; if the spring pre-tightening force is increased, the consequence is that the friction resistance is too large, the efficiency is low, and the cleaning effect is still unsatisfactory.
Method used
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[0026] Such as figure 1 — Figure 11 The oil pipe descaling and cleaning scraper system of the present invention includes a radial rotary joint 1, an adaptive frame 2, a full-circle scraping pressure-resistant component 3, a rotary jet cleaning component 4, a fixed bracket 5, The pulse generator 6 and the conduit 8, the conduit 8 is connected with the high-pressure cleaning liquid supply system, and driven by the feeding device.
[0027] As an improvement of the present invention, the radial rotary joint 1 includes a central pipe 101, the front end of the central pipe 101 is rotatably connected to a joint body 102 through a bearing 103, and the mating surface of the joint body 102 and the central pipe 101 is rotatably connected. The seal 104, the front end of the joint body 102 is provided with a front spray hole 105, the joint body 102 is provided with a tapered side wall that shrinks toward the front end, and a number of side spray holes 106 are arranged on the tapered side...
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The invention relates to an oil pipe descaling and cleaning scraper system in the technical field of cleaning and repairing of oil pipelines in oil fields, which includes a radial rotary joint connected sequentially through pipe joints, an adaptive frame, a full-circle scraping pressure-resistant component, a rotary spray cleaning component, a fixed A type bracket, a pulse generator and a catheter, the catheter is connected to the high-pressure cleaning fluid supply system and driven by the feeding device. In the oil pipe descaling and cleaning scraper system of the present invention, the conduit is connected to the high-pressure cleaning liquid supply system to provide cleaning power, and is connected to the feed drive device connected to the conduit to provide the forward and backward feeding power of the scraper system, so that the scraper system can move forward and backward from the oil pipe. The nozzle is fed forward, scraped and cleaned. Both the self-adaptive frame and the fixed frame play the role of righting and reducing friction. The pulse generator produces high-pressure jet pulses and micro-impact force, and the spray pressure of the nozzle at the front end is also alternated, which improves the treatment effect of scraping and rotating spray.
Description
technical field [0001] The invention relates to the technical field of oilfield oil pipeline cleaning and restoration, in particular to a scraper system for oil pipeline descaling and cleaning. Background technique [0002] Using a scraper to scrape and clean the oil pipe is a key technological measure for oil pipe repair in recent years. In oilfield tubing repair production lines, integral fixed scrapers are generally used to scrape the tubing, that is, the scraper block and the outer body are directly welded and processed as one, and the maximum scraping diameter of the device is a fixed value. Most of the scrapers are triangular as a whole, and cleaning holes are arranged around the periphery of the cutter body. In practical applications, due to manufacturing errors and use, some oil pipes have port diameter reduction, mid-section deformation, diameter reduction or section out-of-round, resulting in frequent knife jamming and affecting work efficiency. In this regard, s...
Claims
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IPC IPC(8): E21B37/04
Inventor 朱一星石建设纪艳娟
Owner CHINA PETROLEUM & CHEM CORP