FACILITY TO PERFORATE HOLES AND TO FORM CRACKS IN SEAM ( VERSIONS ) Russian patent published in 2001 - IPC

FIELD: oil and gas production industry. SUBSTANCE: invention specifically refers to cumulative perforators and pressure powder generators used in holes. Given facility has cumulative perforator with explosive charges that is sunk into hole with use of cable. Perforator forms shaped jets when detonated. Facility also has pressure powder generator with solid fuel elements. Solid fuel elements of pressure powder generator are arranged between shaped explosive charges or close to them. contacting them. Solid fuel elements can be positioned in lower part of facility instead of load or part of this load. In this case solid fuel elements do not cross axes of shaped jets. Elements are manufactured of non-metallized ballistite or blended solid rocket fuel in the form of cylinders with round central duct. Length and diameter of central duct are tied up by ( 20-40 ):1 relation. Filling agent-burning stabilizer relates to mass of solid fuel element as 1.5% and not more. In other versions of facility length and diameter are coupled by some other relations. Other versions have other proportions of filling agent-burning stabilizer to mass of solid fuel element, they can have different arrangement of components of facility and their execution. EFFECT: enhanced operational efficiency of perforator, enlarged dimensions of ducts in columns, capability to form additional cracks in zone bordering on well. 4 cl, 3 dwg