Well treatment system and method
AssigneeSchlumberger Technology Corporation
InventorsBrenden M. Grove, Mark C. Duhon, Lawrence A. Behrmann, Claude D. Jones
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Abstract
A well treatment system of the present invention includes a housing forming a sealed surge chamber, and a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the housing. Fluid communication is created between the surge chamber and the wellbore when the housing is penetrated by the surge charge. The penetration permits wellbore fluid to flow quickly into the surge chamber. Fluid flow into the surge chamber may enhance a surge of flow from the formation into the wellbore.
Claims25
A tool string for achieving a transient underbalance condition in a wellbore, the tool string comprising:
- a housing forming a sealed surge chamber;
- a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the housing;
- and
- a chamber carrying a treatment fluid.
A tool string for well treatment, the tool string comprising:
- a housing forming a sealed surge chamber wherein a pressure within the surge chamber is less than a pressure exterior of the housing when the surge chamber is sealed;
- a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the housing;
- a thin walled section formed in the housing adjacent an explosive cavity of the surge charge;
- an explosive perforating charge adapted for penetrating a material exterior of the housing;
- and
- a chamber carrying a treatment fluid.
A method for treating a well, the method comprising the steps of:
- placing a tool string in a wellbore proximate a formation to be treated comprising a housing having a sealed surge chamber, a surge charge disposed within the sealed surge chamber, a perforating charge, and a chamber carrying a treatment fluid;
- releasing the treatment fluid into the wellbore;
- detonating the perforating charge to create a tunnel in the formation;
- and
- detonating the surge charge to penetrate the housing thereby providing fluid communication between the wellbore and the surge chamber.
Dependencies are inferred from the claim text.