Corrosion monitoring tool
First Claim
1. An apparatus for measuring environmental parameters within a wellbore having metal material there,, said apparatus comprising:
- an elongated housing positionable within the wellbore and including a downhole end;
detecting means disposed within said housing for detecting the environmental parameters within the wellbore proximate said housing, said detecting means including at least one sensor for measuring the loss of metal material within the wellbore; and
data storage means in communication with said detecting means for storing data information communicated by said detecting means, said data storage means being disposed within said housing.
3 Assignments
0 Petitions
Accused Products
Abstract
A tool for monitoring corrosion levels within a wellbore particularly suited for remote monitoring over extended periods. The monitoring tool utilizes a thin wall electrical resistance type corrosion sensor to determine rate of metal loss within the wellbore. The corrosion sensor is preferably made of the same material as the production tubing or drill pipe of the well and is positioned to allows the fluid within the wellbore to flow over the sensor at the same rate as the fluid flows over the tubing. A reference element is incorporated into the corrosion sensor to provide primary temperature compensation. A temperature sensor provides temperature data and allows for secondary temperature compensation for the corrosion sensor. A central processing unit reads and stores the data from the three sensors into solid state memory. The probe records data at programmable time intervals. Upon retrieval of the probe from the wellbore, the probe may be connected to a computer for downloading of the raw data and subsequent analysis.
119 Citations
16 Claims
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1. An apparatus for measuring environmental parameters within a wellbore having metal material there,, said apparatus comprising:
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an elongated housing positionable within the wellbore and including a downhole end; detecting means disposed within said housing for detecting the environmental parameters within the wellbore proximate said housing, said detecting means including at least one sensor for measuring the loss of metal material within the wellbore; and data storage means in communication with said detecting means for storing data information communicated by said detecting means, said data storage means being disposed within said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for measuring environmental parameters within a wellbore having metal material therein, said apparatus comprising:
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an elongated housing positionable within the wellbore and including a downhole end; a detecting probe disposed within said downhole end of said housing such that said probe is exposed to the wellbore environment, said probe including a primary corrosion sensor and a secondary reference corrosion sensor for determining a loss of metal material within the wellbore, said probe being electrically isolated from said elongated housing of said tool; data storage means disposed within said housing in electrical communication with said detecting probe, said data storage means including a central processing unit and a memory unit, said central processing unit receiving downhole environment data from said detecting probe and storing said data on said memory unit; and means for supplying electrical power for operation of said detecting probe and said data storage means, said power supply means being disposed in said housing in electrical communication with said detecting probe and said data storage means whereby said apparatus may be positioned in the wellbore for independent operation collecting data on the wellbore environment. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification