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Selective bottomhole treatment of terrigenous reservoirs with acid emulsion
The paper presents enhanced oil recovery methods in oil and gas wells with closely-spaced gas-water contanct. It is mentioned that for effective gas production it is necessary to treat each layer individually and isolate layers from one another in multi-zone reservoirs. The paper suggests the technology of bottomhole zone treatment with acid emulsion which is pumped into well through coiled tubing.
Proposed technology enables more effective bottomhole zone treatment in porous-fractured terrigenous reservoir. Using coiled tubing for emulsion delivery to treatment layer enables significant reduction in cost of well workover due to elimination of killing operation and faster tripping time. In addition, using of hydrocarbon component of emulsion reduces environmental impact.
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Full version of the article can be downloaded here.
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