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PRCI NC-8
- Using Foaming Agents to Remove Liquids from Gas Wells
- Report / Survey by Pipeline Research Council International, 08/01/1960
- Publisher: PRCI
$6.00$12.00
L00250e
Various
Need: The chemical stimulation of gas production from natural reservoirs and underground storage projects is rapidly expanding. Such stimulative methods commonly use energy available in the reservoir to perform operations that previously were done mechanically with external energy. Therefore, chemical methods often require less personnel and equipment than corresponding mechanical methods. No completely satisfactory theory of foam formation has been developed.
Result: Using foam agents has been tested in the laboratory and field, and suitable agents have been selected for use under many conditions. A large number of agents have been tested to determine their utility and to establish general guidelines for selecting agents for this use. The field-test results illustrate the usefulness of the dynamic laboratory method and show that brines, mixtures of oil and brines, and hydrocarbon condensates may be removed effectively from wells completed with a wide variety of casings and tubing combinations and under various operating conditions. Besides removing liquids, foam treatments also may clean solid particles from the well bore.
Benefit: The field tests show that brines, hydrocarbon condensate, and mixtures of brine with condensates and heavy oils may be removed from gas wells efficiently and inexpensively by the foam method. Intermittent and continuous operations are feasible and undemanding in personnel and equipment. The agents used commonly are effective detergents; therefore they remove scale, mud, rust and other solids from contaminated well bores. A few agents also are highly effective for removing accumulated paraffin and salt.
Various
Need: The chemical stimulation of gas production from natural reservoirs and underground storage projects is rapidly expanding. Such stimulative methods commonly use energy available in the reservoir to perform operations that previously were done mechanically with external energy. Therefore, chemical methods often require less personnel and equipment than corresponding mechanical methods. No completely satisfactory theory of foam formation has been developed.
Result: Using foam agents has been tested in the laboratory and field, and suitable agents have been selected for use under many conditions. A large number of agents have been tested to determine their utility and to establish general guidelines for selecting agents for this use. The field-test results illustrate the usefulness of the dynamic laboratory method and show that brines, mixtures of oil and brines, and hydrocarbon condensates may be removed effectively from wells completed with a wide variety of casings and tubing combinations and under various operating conditions. Besides removing liquids, foam treatments also may clean solid particles from the well bore.
Benefit: The field tests show that brines, hydrocarbon condensate, and mixtures of brine with condensates and heavy oils may be removed from gas wells efficiently and inexpensively by the foam method. Intermittent and continuous operations are feasible and undemanding in personnel and equipment. The agents used commonly are effective detergents; therefore they remove scale, mud, rust and other solids from contaminated well bores. A few agents also are highly effective for removing accumulated paraffin and salt.
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