Quick connecting and fixing device for orientated perforator

Abstract

The invention discloses a quick connecting and fixing device for an orientated perforator. In an orientated gun head, the tail end of a sealing groove on the outer side of an original conventional pressure or collision gun head is provided with a fixing screw thread and a fixing clamping band; a perforating gun is connected with the gun head through a single joint, thus the length of an original middle joint is reduced; the tail ends of sealing grooves at the two ends of an oriented single joint are provided with fixing external threads and fixing clamping bands; a transverse-H-shaped clamping groove is formed in the middle of the oriented single joint; and the inner side of the upper end of the oriented single joint is provided with a centering hole. The gun head, the single joint and the perforating gun are fixed, retreat outwards through the clamping band and form reverse extruding with the screwing of the gun head of the perforating gun, so that quick self-locking of an adjustable position is realized, and the consistence of blind hole directions between perforators and the consistence of the blind hole direction of the perforating gun and the measuring direction of an oriented pipe nipple are realized.

Description

technical field [0001] The invention relates to an orientation perforating device, in particular to a fast connection and fixing device for an orientation perforating device. Background technique [0002] At present, the ultra-low permeability accounts for more than 70% of the newly proven reserves in some oilfields or oil areas. The exploration and development of low-permeability and ultra-low-permeability oil and gas reservoirs are difficult. Some wells have low recovery rates, and some wells even require pressure Only by cracking and reforming can production be built. Azimuth perforation technology has now been popularized and applied in oilfields, improving the effect of fracturing. For example, the publication number is 101824978A, and the publication date is 2010-0908. The Chinese patent application for a high-precision positioning perforator includes a perforating gun head, an adjustment ring, a positioning locking ring, an upper perforating gun body, and an upper mi...

AI Technical Summary

Problems solved by technology

The connection and fixing device of the current positioning perforating gun has high positioning accuracy, safety and reliability, but the structure is complex and the operation is cumbersome, and the connection between the perforating guns still adopts the traditional connection and fixing method of upper and lower double joints. The shortening of the perforating blind zone distance between the guns has been improved, and the length of the blind zone reaches 49mm, which reduces the number of perforating bullet holes

Images