40results about How to "Convenient downhole operation" patented technology

The invention provides an energy accumulator used for downhole operation. The energy accumulator comprises a body. The body is provided with an energy storage cavity used for storing driving fluid, an inlet and an outlet which are used for enabling the driving fluid to get in and out of the energy storage cavity, and a passageway used for enabling underground fluid to flow. According to the energy accumulator used for downhole operation, the driving fluid provides power for downhole tools and can be recycled; when the energy accumulator is placed in a well, well bodies located at the two ends of the energy accumulator can be kept unblocked, and hence downhole operation is conveniently conducted; and the energy accumulator is simple in structure, convenient to use and savable in time and effort.

The invention relates to a rubber cartridge for a packer and a packer. The rubber sleeve used for the packer includes an elastic cylinder body, a rigid support member wrapped on the circumferential side wall of the cylinder body, and the support member makes the cylinder body form a plurality of spaced expansion regions, wherein, along the cylinder body By axially applying pressure to the end of the barrel, the multiple expansion zones are capable of expanding radially outward independently of each other. A packer includes a rubber cartridge for the packer. The rubber cartridge of the invention is suitable for operations such as drilling and completion of wells, has a simple structure, is applicable to a wide range of well diameters, and can significantly improve the safety and sealing reliability of tools.

The invention discloses a steel wire scraper for downhole casings. The steel wire scraper comprises a barrel, scraper brushes and centralizing pipes. A plurality of rows of through hole groups are formed in the side walls of the barrel at intervals, the rows of through hole groups comprise different quantities of through holes which are uniformly formed along circumferential directions, and the through holes are formed in the outer walls of the barrel in a staggered manner at intervals; each cylindrical centralizing pipe is fixedly inserted in the corresponding through hole; the scraper brushes are steel wire rope heads, a plurality of steel wires are twisted to form each steel wire rope head, the quantity of the scraper brushes is identical to that of the centralizing pipes, and each scraper brush is locally fixedly inserted in the corresponding centralizing pipe. The steel wire scraper for the downhole casings can be dragged and turned up and down in the casings along drill rods, and casing walls can be cleaned while the inner walls of the casings are scraped. Compared with the traditional scale scraping devices, the steel wire scraper has the advantages that the steel wire scraper is simple in structure, easy to machine and high in operation efficiency; casing scale with different thicknesses can be thoroughly cleaned in single stroke, damage to the inner walls of the casings can be prevented, the operation cost and operation risks can be reduced to a great extent, the steel wire scraper is favorable for follow-up downhole operation, and the like.