Breaking method and device for underground well structure layer

A technology of structural layer and equipment, applied in the direction of earthwork drilling, wellbore/well components, production fluid, etc., which can solve problems such as large friction coefficient, reduce hydrostatic effect, and improve drilling pressure
CN1408986AInactive Publication Date: 2003-04-09HALLIBURTON ENERGY SERVICES INC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HALLIBURTON ENERGY SERVICES INC
Publication Date
2003-04-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of fracturing a downhole formation according to which a plurality of jet nozzles are located in a spaced relation to the wall of the formation to form an annulus between the nozzles and the formation. A non-acid containing stimulation fluid is pumped at a predetermined pressure through the nozzles, into the annulus, and against the wall of the formation, and a gas is introduced into the annulus so that the stimulation fluid mixes with the gas to generate foam before the mixture is jetted towards the formation to form fractures in the formation.
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Description

field of invention

[0001] The present invention relates to a method and apparatus for treating a subterranean well formation to stimulate the production of hydrocarbons, and more particularly to a method and apparatus for fracturing a well formation. Background technique

[0002] Various techniques have been developed for treating subterranean formations to stimulate the production of hydrocarbons. For example, hydraulic fracture acidizing methods are often used, according to which a portion of the formation to be excited is separated by conventional plugging, etc., and an excitation fluid containing gel, acid, mortar, etc. is pumped through the drilled well into the separated portion of the formation middle. The pressurized excitation fluid pushes against the structural layer with a very high force, thereby creating and propagating cracks in the structural layer. But the requirement to separate the structural layers with plugging is time consuming and adds considerably to...

Claims

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