Method and system for producing hydrocarbon fluid through a well with a sensor assembly outside the well casing
a technology of hydrocarbon fluid and sensor assembly, which is applied in the direction of fluid removal, survey, borehole/well accessories, etc., can solve the problems of difficult data transmission and electrical power of the sensor
Inactive Publication Date: 2011-11-24
SHELL OIL CO
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Benefits of technology
The invention provides a method and system for producing hydrocarbon fluids through a well casing string with a sensor assembly that measures various physical properties of solid and fluid materials in the annular space surrounding the wellbore. The sensor assembly is mounted on a swellable material that presses against the inner surface of the underground formation after the casing string is lowered into the wellbore. The sensor assembly can measure pore pressure, chemical composition, electrical resistivity, conductivity, streaming potentials, dielectric constant, cement lining changes, deformation and acoustic rock reflections, among others. The sensor assembly can also be connected to a data transmission conduit within the casing string through a wireless link. The technical effects of the invention include improved wellbore monitoring and evaluation, improved wellbore construction, and improved wellbore production.
Problems solved by technology
A limitation of the known system is that it is difficult to provide electrical power to the sensor and to transmit data from the sensor to surface and that the steel casing inhibits collection of electromagnetic data about several properties of fluid and solid materials in the surrounding formation.
Method used
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Embodiment Construction
[0023]FIG. 1 shows a crude oil and / or natural gas production well 1, which traverses a crude oil and / or natural gas containing formation 2.
[0024]The well 1 comprises a wellhead 3 which is located at the earth surface 4 and from which a well casing 5 and a tubing hanger 6 are suspended, from which tubing hanger 6 a production tubing 7 is suspended within the well 1.
[0025]A sensor assembly 8 is mounted in a support sleeve 9, which is secured to the outer surface of a casing section 5A of the well casing 5, which support sleeve 9 substantially fills an annular space surrounding the well casing 5 within a region where the well 1 traverses the crude oil and / or natural gas containing formation 2. A wireless power and / or signal transmission sleeve 10 is mounted on the outer surface of the production tubing 7 at the same depth as the support sleeve 9 and such that the sleeves 9 and 10 are substantially co-axial to each other.
[0026]The wireless power and / or signal transmission sleeve 10 is c...
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A method is disclosed for producing hydrocarbon fluids through a well having a well casing string with a casing section which is surrounded by an annular space which comprises a sensor assembly for measuring electromagnetic and / or other physical properties of solid and fluid materials within the annular space, in an underground formation surrounding the annular space and / or within the interior of the section of the casing string, wherein the sensor assembly is mounted on a body of swellable material, such as a swellable rubber or other elastomeric material, which is secured to the outer surface of said casing section and presses the sensor assembly against the inner surface of the surrounding underground formation after the casing string has been lowered into the wellbore.
Description
BACKGROUND OF THE INVENTION[0001]The invention relates to a method and system for producing hydrocarbon fluid through a well with a sensor assembly outside the well casing.[0002]Such a method and system are known from International patent application WO 03 / 029614, which discloses a system for measuring pore pressure in a formation surrounding a well casing by a pressure sensor which is embedded in a cement sheath surrounding a steel well casing, and which sheath is fractured by a perforating gun to provide an open fluid channel between the sensor and the pores of the surrounding formation.[0003]A limitation of the known system is that it is difficult to provide electrical power to the sensor and to transmit data from the sensor to surface and that the steel casing inhibits collection of electromagnetic data about several properties of fluid and solid materials in the surrounding formation.[0004]It is an object of the present invention to provide a method and system, which alleviate ...
Claims
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IPC IPC(8): E21B47/00E21B43/00E21B47/01
CPCE21B47/01E21B17/0283
Inventor ADDIS, MICHAEL ANTHONYBIRCH, WILLIAMDEN BOER, JOHANNIS JOSEPHUSRICE, STEPHEN AINSLEIGH
Owner SHELL OIL CO