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US 2026/0015928 A1Published application
Method and downhole apparatus for matrix acidizing of a subterranean rock formation
AssigneeSchlumberger Technology Corporation
InventorsMustapha ABBAD, Gallyam AIDAGULOV, Hussain Khalifah AL-DAKHEEL
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Abstract
The present disclosure relates to downhole tools and related methods that provide for controlled radial movement of one or more nozzles to provide an adjustable and variable standoff between the exit of the nozzle(s) and the wellbore surface in the treatment zone of a wellbore during matrix acidizing.
Claims17
A downhole tool deployable at a treatment zone in a wellbore that traverses a subterranean rock formation traversed by a wellbore, the downhole tool comprising:
- a nozzle with an exit, the nozzle being supported by at least one moveable arm;
- wherein the nozzle is configured to inject a stimulating fluid into the near-wellbore area of the rock formation at a pressure below the formation fracturing pressure, wherein the nozzle is configured to direct a high-pressure flow of the stimulating fluid from the exit of the nozzle to a localized area of the wellbore surface in the treatment zone to form at least one wormhole arising from the dissolution of rock caused by the reaction of the rock with the stimulating fluid;
- and
- wherein the at least one moveable arm is configured for controlled radial movement of the nozzle to provide an adjustable and variable standoff between the exit of the nozzle and the wellbore surface in the treatment zone.
1 more element
Dependencies are inferred from the claim text.