摘要:
An explosive cutting device comprising an upper and lower member, each having a charge retaining area and a standoff area, a linear shaped explosive charge contained within each charge retaining area of the upper and lower member, a pair of anti-jet distortion members located on both the upper and lower member thereby defining an opening between the upper and lower member into which a target member to be severed is placed, a fastening means for securing the upper member to the lower member, and means for detonating the linear shaped explosive charge within the upper and lower member.
摘要:
Methods and apparatus for severing concrete pilings containing one or more longitudinally extending reinforcing rods are provided. The apparatus is comprised of at least one elongated barrel, a projectile positioned within the barrel, remotely detonatable explosive means attached to the barrel for propelling the projectile through the barrel into contact with the piling and means for clamping the barrel to the piling.
摘要:
A shaped charge carrier assembly includes a strip type carrier having openings therein for receiving shaped charges. Each of the openings includes first and second diagonally opposed pairs of resilient tabs for snugly engaging an outer case of the shaped charge. In a preferred embodiment, every second one of the openings includes first and second elongated cord receiving slots communicated therewith, so that the assembly can be put together without threading a free end of a firing cord through openings in the carrier. Integral intermediate portions of the firing cord can be placed through the alternate openings in the elongated cord receiving slots associated therewith without threading the free ends of the firing cord therethrough.
摘要:
A cartridge loaded stud gun and a complementary anode attachment fitting provide a system for explosively attaching a sacrificial anode to a subsea structure. The system is capable of being operated by a remote-controlled vehicle, and contains a means for orienting the gun and sensing its alignment in order to prevent firing the gun with the barrel canted relative to the subsea structure, a position which might permit ricocheting of the fired stud.
摘要:
A method of testing an explosive charge using a uniform shaped charge testing standard that is simulative of naturally occuring Berea sandstone test specimens. A quantity of zircon sand is mixed with from 3% to 8% by weight of the total mixture of a phenolic resin and then agitated to achieve desired density of the mixture for subsequent controlled heating to cure the mass into a molded shape suitable for explosives testing. An explosive shaped charge is detonated in the proximity of the standard, and the penetration of the shaped charge on the standard is measured.
摘要:
Disclosed is a safe/arm detonator assembly for use with an oil well perforating gun assembly having two housing members sealingly isolated from well bore fluid and which are rotatable from a safe position wherein a detonator and a booster are held out of alignment, to an armed position wherein the detonator and booster are moved into alignment. The detonator assembly is further arranged to be installed in a well perforating gun assembly such that the gun assembly may be transported with the detonator assembly in the safe position, and rotated to the armed position at the well site without disassembling the gun assembly. A safety pin is further disclosed which may be included in one of the housing members to cover and protect the booster from accidental detonation when the detonator assembly is in the safe position.
摘要:
A method of interconnecting wellbores is provided which is convenient and economical in its performance. In a described embodiment, milling is not required for forming an opening through a sidewall of casing positioned in a parent wellbore. Instead, an appendage is formed from the casing sidewall and deformed outwardly into a void. A lateral wellbore may then be drilled through the casing sidewall. A liner may be positioned in the lateral wellbore and attached to the appendage.
摘要:
A perforating gun carrier comprising an inner substantially tubular housing within an outer substantially tubular sleeve. The inner housing includes gun ports extending through the wall thereof in a pattern corresponding to the pattern of shaped charges to be carried within. The sleeve may be secured to the housing by welding, soldering, brazing, adhesive bonding or other known method, may be shrink-fit onto the housing, or may be mechanically secured thereon.
摘要:
Apparatus for severing a conduit along a plane generally transverse to the axis of the conduit which includes two confined explosive charges aligned axially with the conduit and terminating at opposed proximal convexly shaped ends facing each other across a space disposed in such transverse plane. A liner formed of high density ductile material having radially increasing thickness is attached to each of the proximal ends of the charges and detonation devices are disposed at the distal ends of the charges for originating simultaneous detonation of the charges. Methods of severing conduits using the apparatus are also provided.
摘要:
A modular perforating gun employing only secondary explosives therein, of a design permitting guns to be made up in tandem like drill pipe. The tandem guns have no physically connected shaped charge initiating devices therebetween, each gun being actuated by an acceptor booster charge which is initiated by a shaped donor charge at the bottom of the next higher gun.