Oil Extracting Apparatus (Patent No: 438154)

Inventor: Hoving, Albert

Location: Calgary

Comments: N/A

Description: Albert Hoving, Calgary, Alberta, Canada, 26th November, 1946. Filed 22nd August, 1944. Serial No. 517,460.

Claim.—1. Oil extracting apparatus for oil wells comprising tubing divided into compartments by means of diaphragms, a battery of pipes conveying natural gas under high pressure, one to each said compartment, a two-way valve in each said pipe, all such valves being so controlled as to operate in pressure and release order consecutively through the battery of pipes, an oil conveyer tube in each said compartment vertically disposed to evacuate the oil therefrom through its intake near the bottom of the compartment and its outlet into the bottom of the compartment next above, and a ball check valve in the outlet end of each said oil conveyer tube for retention of oil in the next upper compartment as the gas pressure in the lower compartment is released.

2. Oil extracting apparatus for oil wells comprising in combination, vertically disposed inner tubing open at the bottom, diaphragm divided compartments adjacent throughout the length of said tubing for transference of oil in upward stages from one such compartment to the other a natural gas pressure pipe leading into the top of each said compartment, a compressed gas and gas release valve in each said pressure pipe for supply of high procure gas into each said compartment and for release of same both such operations to control the supply and release of such pressure gas in consecutive manner in each said compartment in order from the bottom to the top of said well, means to tap and supply natural gas from adjacent geological formations in between the well casing and the said inner tubing for use in said displacement of oil by pressure gas consecutively in each compartment, and a composition ring at the bottom of and between said casing and said inner tubing for sealing purposes.

3. Oil extracting apparatus for wells comprising, inner tubing spaced from the well casing or wall and penetrating down into the producing geological formation, diaphragm divided oil lift compartments within said inner tubing, the bottom compartment penetrating the producing formation, for transference of the fluid therefrom in upward stages consecutively throughout said compartments, a natural gas pressure supply pipe leading down into the top of each said compartment for evacuating the raised oil therefrom a single valve in each said pipe for the introduction, shutting off, and releasing of such supplied pressure, automatic moans to operate said pressure controlling valves, an oil discharge tube in each said compartment, and one penetrating the oil bearing formation for conveyance of oil under introduced gas pressure to the compartment next above from which the gas has been evacuated. a check valve in each said oil conveying tube and a cement plug between the inner tube and the well casing towards the bottom of the well to separate rising gas from the oil being extracted.

4. A process for extracting oil from wells in which tubular compartments in the well tubing, as arranged one adjacently above the other, are consecutively filled with oil in an upward conventional manner within the tubing, and the oil under pressure from natural gas sources in each said compartment is driven out through individual pipes to each said compartment into the next above pressure free compartment, such supply and evacuation of oil being made possible by proper piping connections communicating with each other said compartment and controlled in a convenient manner by valves governing the pressure flow, the stoppage and release of compressed gas in each said pipe, in combination with oil conveying tubes and check valves controlling the passages of such oil from one compartment to another compartment immediately above.

Claims allowed, 4.