Well treatment
AssigneeSchlumberger Technology Corporation
InventorsMurtaza Ziauddin, Ahmed S. Zakaria, Hisham Nasr-El-Din
Life of this patent
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Abstract
In one aspect, methods may include quantifying a pore-scale heterogeneity of a porous medium; determining an adjusted pore volume to breakthrough based on the pore scale heterogeneity determined; and designing a stimulating fluid treatment for the porous medium. Other aspects may include the development of a wellbore stimulation methodology that allows stimulation fluid breakthrough curves of differing formation samples to be plotted as a single curve that accounts for the varied pore structure of the respective samples.
Claims20
A method, comprising:
- quantifying a pore-scale heterogeneity of a porous medium, wherein the pore-scale heterogeneity is an overall variance of pore-size distribution;
- determining an adjusted pore volume to breakthrough based on the pore scale heterogeneity;
- using the pore-scale heterogeneity and the adjusted pore volume to breakthrough to design a stimulating fluid treatment for the porous medium;
- and
- performing the stimulating fluid treatment by injecting a stimulating fluid into a subterranean formation.
A method, comprising:
- injecting a non-reactive tracer fluid through a porous medium;
- measuring a flowing fraction;
- estimating an adjusted pore volume to breakthrough based on the measured flowing fraction;
- designing a stimulating fluid treatment for the porous medium;
- and
- performing the stimulating fluid treatment by injecting a stimulating fluid into a subterranean formation,
- wherein the non-reactive tracer comprises a fluid that contains a detectable species.
A method, comprising:
- determining a pore volume to breakthrough for a first porous medium having a first type of porosity;
- calculating a flowing fraction for a second porous medium having a second type of porosity;
- determining an adjusted pore volume to breakthrough for the second porous medium by adjusting the pore volume to breakthrough for the first porous medium using the calculated flowing fraction for the second porous medium;
- using the pore volumes to breakthrough for the first and second porous media to design a stimulation fluid treatment;
- and
- performing the designed stimulation treatment by injecting a stimulation fluid into a subterranean formation,
- wherein the first and second type of porosity comprises interparticle porosity, microporosity, vuggy porosity and moldic porosity.
Dependencies are inferred from the claim text.