Method and apparatus for carrying out borehole temperature measurements
First Claim
1. A method for making borehole temperature measurements, comprising the steps of:
- a) programming a self-contained, programmable temperature sensor on the surface of the earth to record and store temperature data at predetermined times when operating within a borehole penetrating a subsurface formation,b) placing said programmed temperature sensor into a pressure housing capable of withstanding borehole pressures,c) suspending said pressure housing containing said programmed temperature sensor within said borehole,d) positioning said pressure housing containing said programmed temperature sensor along said borehole for the recording and storing of borehole temperature data,e) recording and storing temperature data within said temperature sensor during operation of said temperature sensor within said borehole at said predetermined times as programmed into said temperature sensor,f) recording the depth of said temperature sensor within said borehole corresponding with each temperature recording,g) removing said pressure housing from said borehole to the earth'"'"'s surface,h) removing said temperature sensor from said pressure housing, andi) retrieving said borehole recorded temperature data stored within said temperature sensor and creating a record of borehole temperature versus depth within said borehole at said predetermined times.
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Accused Products
Abstract
A self-contained, programmable temperature sensor is positioned within a suitable pressure housing affixed to a borehole tool to record and store temperature data at predetermined times during operations of the borehole tool in a borehole penetrating a subsurface formation. The depth of the temperature sensor within the borehole corresponding to each temperature reading is recorded. After the borehole tool is removed from the borehole, the temperature sensor is removed from the pressure housing and the stored temperature data is retrieved for use in producing a record of borehole temperature versus depth within the borehole at the programmed times.
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Citations
21 Claims
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1. A method for making borehole temperature measurements, comprising the steps of:
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a) programming a self-contained, programmable temperature sensor on the surface of the earth to record and store temperature data at predetermined times when operating within a borehole penetrating a subsurface formation, b) placing said programmed temperature sensor into a pressure housing capable of withstanding borehole pressures, c) suspending said pressure housing containing said programmed temperature sensor within said borehole, d) positioning said pressure housing containing said programmed temperature sensor along said borehole for the recording and storing of borehole temperature data, e) recording and storing temperature data within said temperature sensor during operation of said temperature sensor within said borehole at said predetermined times as programmed into said temperature sensor, f) recording the depth of said temperature sensor within said borehole corresponding with each temperature recording, g) removing said pressure housing from said borehole to the earth'"'"'s surface, h) removing said temperature sensor from said pressure housing, and i) retrieving said borehole recorded temperature data stored within said temperature sensor and creating a record of borehole temperature versus depth within said borehole at said predetermined times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Apparatus for making borehole temperature measurements, comprising:
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a) a self-contained programmable temperature sensor, b) means positioned on the surface of the earth for programming said temperature sensor for the recording and storing of borehole temperature data at predetermined times during a borehole operation, c) a generally hollow cylindrical pressure housing into which said temperature sensor is inserted after having been programmed to record and store said borehole temperature data, said housing protecting said temperature sensor from borehole pressure, d) means for positioning said pressure housing containing said temperature sensor within said borehole for the recording and storing of temperature data as programmed into said temperature sensor on the surface of the earth, e) means for recording the depth of said temperature sensor within said borehole corresponding with each temperature recording, f) means for removing said pressure housing containing said temperature sensor from said borehole to the surface of the earth, and g) means positioned on the surface of the earth for retrieving temperature data stored in said temperature sensor and recording said temperature data versus depth within said borehole. - View Dependent Claims (15, 18, 19, 20, 21)
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16. A pressure housing for a self-contained borehole temperature sensor comprising:
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a) a generally hollow cylindrical pressure housing closed at a first end and open at a second end for insertion of said temperature sensor, b) a circumferential slot around the inner surface of said housing at a point beyond which said temperature sensor is inserted, and c) a retaining ring inserted into said circumferential slot around the inner surface of said housing for maintaining said temperature sensor in position within the portion of said pressure housing adjacent said first end of said pressure housing. - View Dependent Claims (17)
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Specification