Hydraulic and earth engineering – Temperature modification or control of earthen formation – Heating
Patent
1977-10-25
1978-09-05
Shapiro, Jacob
Hydraulic and earth engineering
Temperature modification or control of earthen formation
Heating
166272, 166305D, E02D 2728
Patent
active
041109880
ABSTRACT:
A method for forming domes from subterranian diapiric material, especially salt to facilitate the genesis and extraction of oil therefrom, and therearound, characterized by the following process. First, a series of continuous wellbores having vertical first section in the area in which is desired to create the dome, penetrating the overburden layer to near the layer of diapiric material is drilled and a second section thereof contained in the salt formation and a third section thereof rising vertically from the distal end of the second section to the ground surface, is formed. Each of the wellbores is arranged with respect to the others so that the second sections emanate from the desired dome area in a radial-like pattern. Next, a steel well casing sealed at all joints and connections when complete, is inserted into each of the wellbores extending the entire length thereof. Thereafter, a heating fluid is circulated through the wellbores, heating the diapiric material and overburden layer, thereby reducing the effective viscosity of the diapiric material rendering it mobile. Subsequently the subterranean pressures cause the less viscous diapiric material to flow into the area of the desired dome and to rise toward the surface of the earth in the desired dome area.
REFERENCES:
patent: 2548059 (1951-04-01), Ramsey
patent: 3986557 (1976-10-01), Striegler
patent: 4008762 (1977-02-01), Fisher et al.
Keller Walter R.
Shapiro Jacob
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