Method and apparatus for testing a well
First Claim
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1. A method of testing a well having a first zone and a second zone, comprising:
- flowing fluid from the first zone into a first portion of a chamber; and
moving an isolation device that divides the chamber into the first chamber portion and a second chamber portion in a first direction in response to the fluid flow into the first portion; and
applying an elevated pressure in the second chamber portion to move the isolation device in a second direction to flow the fluid in the first chamber portion into the second zone.
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Abstract
A test system and method for testing a well having a first and second zone includes a chamber and an isolation device moveable in the chamber. The isolation device separates a first and a second portion of the chamber. The chamber is adapted to receive fluid in the second chamber portion from the first zone. The isolation device is adapted to be moved in the chamber in a first direction by the first zone fluid. The first chamber portion can be charged with fluid pressure to move the isolation device in a second direction to pump the first zone fluid inside the second chamber portion into the second zone.
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Citations
20 Claims
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1. A method of testing a well having a first zone and a second zone, comprising:
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flowing fluid from the first zone into a first portion of a chamber; and
moving an isolation device that divides the chamber into the first chamber portion and a second chamber portion in a first direction in response to the fluid flow into the first portion; and
applying an elevated pressure in the second chamber portion to move the isolation device in a second direction to flow the fluid in the first chamber portion into the second zone.
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2. A method of testing a well having a first zone and a second zone, comprising:
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flowing fluid from the first zone through a flow conduit and into a chamber;
keeping the fluid within the chamber for a set period of time; and
removing the fluid from the chamber to the second zone after the expiration of the set period of time; and
performing the flowing, keeping, and removing steps a plurality of times. - View Dependent Claims (3)
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4. A method of testing a well having a first zone and a second zone, comprising:
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providing a test string including a chamber, a flow conduit, a first valve, and a second valve;
opening the first valve to enable fluid flow from the first zone through the flow conduit and into the chamber;
after an amount of fluid has flowed into the chamber, closing the first valve to isolate the first zone; and
opening the second valve to enable fluid flow from the chamber into the second zone. - View Dependent Claims (5, 6, 7, 8, 9, 10)
pumping fluid from the well surface into the chamber to flush fluid into the second zone.
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8. The method of claim 4, further comprising:
filling an annulus region outside the chamber with kill fluid to prevent blow-out of the first and second zones.
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9. The method of claim 4, further comprising:
controlling an adjustable choke device to control flow rate from the first zone to the chamber.
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10. The method of claim 9, wherein controlling the adjustable choke device to control the flow rate comprises maintaining a substantially constant flow rate.
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11. A method of testing a well having a first zone, comprising:
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flowing fluid from the first zone through an adjustable choke into a chamber; and
maintaining the fluid flow rate into the chamber at a substantially constant rate by use of the adjustable choke. - View Dependent Claims (12, 13)
opening a valve to flow the fluid from the chamber into a second zone.
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13. The method of claim 12, further comprising:
using at least one sensor to detect a characteristic of the fluid.
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14. A method for testing a well having a first zone and a second zone, comprising:
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providing a chamber having an isolation device;
flowing fluid from the first zone into the chamber; and
removing fluid from the chamber to the second zone by use of a pump located exterior to the tool string. - View Dependent Claims (15, 16)
moving the isolation device in the chamber as fluid is flowed into the chamber and removed from the chamber.
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17. A test system for testing a well having a first zone and a second zone, comprising:
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a chamber;
an isolation device in the chamber;
a tool string having a production inlet, an injection outlet, and the chamber;
the production inlet providing communication for fluid from the first zone to the chamber;
the injection outlet providing communication for fluid from the chamber to the second zone; and
a pump located exterior to the tool string for inducing the injection of fluid from the chamber into the second zone. - View Dependent Claims (18, 19)
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20. A method or testing a well having a first zone and a second zone, comprising:
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opening a ball valve to allow flow of fluid from the first zone into a chamber;
closing the ball valve;
performing a build-up test of the first zone against the ball valve; and
injecting the fluid from the chamber into the second zone.
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Specification