US368826A - Casing for gas or oil wells - Google Patents
Casing for gas or oil wells Download PDFInfo
- Publication number
- US368826A US368826A US368826DA US368826A US 368826 A US368826 A US 368826A US 368826D A US368826D A US 368826DA US 368826 A US368826 A US 368826A
- Authority
- US
- United States
- Prior art keywords
- casing
- gas
- well
- pipe
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003129 oil well Substances 0.000 title description 6
- 238000004873 anchoring Methods 0.000 description 8
- 238000009412 basement excavation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000002035 prolonged Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Definitions
- Theinner casing is generally a four-inch pipe,which extends from the top of the wellto the desired point, and the outer casing is a five and fiveeighths or six inch pipe, which extends from the top of the well to a pointbelow the waterveins, its purpose being to exclude the water from the hole below.
- the inner casing reduces the diameter of the passage through which the gas has to flow, and thereforelimits the quantity of gas which can be had from the well in a given time.
- My invention consists, first, in providing a well-casing with a valve for shutting off the gas and anchoring the casing against the upward pressure by means of anchoring devices situate at or near the surface of the well; and, second, it consists in constructing such a gaswell without the inner casing and of a uni form bore from top to bottom, whereby a larger gas-outlet is afforded and more gas is consequently obtainable.
- Figure 1 is a vertical section of a well constructed according to the principles of my invention, the collar 14 being shown in this figure at a different angle from its position in Fig. 2, to illustrate more clearly its relation (No model.)
- Fig. 2 is a horizontal section on the'line w a"; and Fig. 3 is a horizontal section on the line y y of Fig. 1, the beams 16 and 8 being omitted to expose the lower parts of the structure.
- 2 represents the derrick of a gas-well
- 3 represents the well casing or pipe having the usual blow-oft extension, 4, and the branch pipe 5, leading'to the distributing-pipe system.
- the blow-off pipe 4 is provided with avalve, 6, and the pipe 5 has a valve, 7.
- the well-hole is of uniform bore throughout, the casing 3, which is of standard size, extending down to the desired point I), and the remainder ofthe hole being drilled through the casing of the same internal diameter therewith and uncased. If desired, the casing 2 may be extended to the bottom of the well.
- the advantages of being able to shut the gas in the Well when desired are very materlal.
- the gas,when not used, can be prevented from Wasting uselessly, and thus the supply can be economized and the producing life of the well correspondingly prolonged.
- My improved construction may be applied to flowing oil-wells with the same advantages in holding the casing and economizing in oil.
- I claim IO 1 The combination, with a gas or oil well casing or pipe, of an anchor at the surface of the well connected with the casing and retaining it in the well, and a valve controlling the casing for confining the gas or oil therein, I 5 substantially as and for the purposes described. 2.
- a casing or pipe having a surface anchoring device, and a valve for confining the gas or oil in the 0 well, substantially as and for the purposes described.
Description
(-NO Model.) 2 Sheets-Sheet 1.v
T. A. GILLESPIE.
CASING FOR GAS 0R OIL WELLS.
No. 368,826. Patented Aug. 23,1887.
N ITED STATES ATENT Fries.
THOMAS A. GILLESPIE, OF PITTSBURG, PENNSYLVANIA.
CASING FOR GAS 0R OIL WELLS.
SPECIFICATION forming part of Letters Patent No. 368,826, dated August 23, 1887.
Application filed April 22, 1857. Serial No. 235,725.
purpose of preventing the flow of the gas or oil. WVhen in a gas-well the valve in the easing is closed to confine the gas, there is generally an enormous pressure, sometimes over five hundred pounds to the square inch,which is exerted upon the casing, tending to eject it from the well. The resistance to this pressure has been afforded by the usual rubber packer, which is set around the inner casing and expanded against the sides of the well; but this is inadequate to the work. Theinner casing is generally a four-inch pipe,which extends from the top of the wellto the desired point, and the outer casing is a five and fiveeighths or six inch pipe, which extends from the top of the well to a pointbelow the waterveins, its purpose being to exclude the water from the hole below. The inner casing reduces the diameter of the passage through which the gas has to flow, and thereforelimits the quantity of gas which can be had from the well in a given time.
My invention consists, first, in providing a well-casing with a valve for shutting off the gas and anchoring the casing against the upward pressure by means of anchoring devices situate at or near the surface of the well; and, second, it consists in constructing such a gaswell without the inner casing and of a uni form bore from top to bottom, whereby a larger gas-outlet is afforded and more gas is consequently obtainable.
It also consists of certain details of construction, which are specifically indicated in the claims.
My invention is illustrated in the drawings, wherein Figure 1 is a vertical section of a well constructed according to the principles of my invention, the collar 14 being shown in this figure at a different angle from its position in Fig. 2, to illustrate more clearly its relation (No model.)
to the casing and to prevent it from obscuring the other parts. Fig. 2 is a horizontal section on the'line w a"; and Fig. 3 is a horizontal section on the line y y of Fig. 1, the beams 16 and 8 being omitted to expose the lower parts of the structure.
Like symbols of reference indicate like parts in each.
In the drawings, 2 represents the derrick of a gas-well, and 3 represents the well casing or pipe having the usual blow-oft extension, 4, and the branch pipe 5, leading'to the distributing-pipe system. The blow-off pipe 4 is provided with avalve, 6, and the pipe 5 has a valve, 7.
As shown in Fig. 1, the well-hole is of uniform bore throughout, the casing 3, which is of standard size, extending down to the desired point I), and the remainder ofthe hole being drilled through the casing of the same internal diameter therewith and uncased. If desired,the casing 2 may be extended to the bottom of the well.
In order to hold the casing in the well against the pressure of gas exerted on it when the valves 6 and 7 are closed, I employ the following anchoring devices: Beneath thegroundsill 8 of the derrick I make an excavation, 13,
around the casing,and at its base build a floor or frame, 9, of timbers. At the surface of the ground I place a collar or clamp, 10, around the casing, Figs. 1 and 3, and from this collar iron rods 11 extend to a bar or plate, 12,which is set underneath the floor 9. I then fill up the excavation 13 with stone and earth, as
shown in Fig. 1, the weight of which, pressing makes it possible to dispense with the packing devices heretofore employed for retaining the casing or pipe in position and with the inner casing, so that the diameter of the hole is not reduced and a larger product is attainable.
The advantages of being able to shut the gas in the Well when desired are very materlal. The gas,when not used, can be prevented from Wasting uselessly, and thus the supply can be economized and the producing life of the well correspondingly prolonged.
My improved construction may be applied to flowing oil-wells with the same advantages in holding the casing and economizing in oil.
I claim IO 1. The combination, with a gas or oil well casing or pipe, of an anchor at the surface of the well connected with the casing and retaining it in the well, and a valve controlling the casing for confining the gas or oil therein, I 5 substantially as and for the purposes described. 2. The combinatiomwith a deep-well casing or pipe, of a buried anchor-plate connected therewith, and a valve for confining the gas or oil in the casing, substantially as and for the 20 purposes described.
3. The combination,with a deep-well casing or pipe, of-a collar attached thereto, a buried anchor-plate connected with the collar, and a valve for confining the gas or oil in the easing, substantially as and for the purposes (16- 25 scribed.
4. In a deep well having its discharginghole of uniform diameter throughout, a casing or pipe having a surface anchoring device, and a valve for confining the gas or oil in the 0 well, substantially as and for the purposes described.
In testimony whereof I have hereunto set my hand this 7th day of April, A. D. 1887.
THOMAS A. GILLESPIE.
Vvitnesses:
THOMAS W. BAKEW'ELL, W. B. CORWIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US368826A true US368826A (en) | 1887-08-23 |
Family
ID=2437843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US368826D Expired - Lifetime US368826A (en) | Casing for gas or oil wells |
Country Status (1)
Country | Link |
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US (1) | US368826A (en) |
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- US US368826D patent/US368826A/en not_active Expired - Lifetime
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