Borehole Imaging and Orientation of Downhole Tools
First Claim
1. A method of orienting a downhole operational device in a borehole, comprising:
- running a tool string into the borehole to a predetermined depth, the tool string including an imaging device, a motor module, and the downhole operational device;
imaging the borehole at the predetermined depth with the imaging device while rotating the imaging device about an axis of the tool string with the motor module to provide a radial survey of the borehole at the predetermined depth;
rotating the downhole operational device about the axis of the tool string to a desired orientation with the motor module based on the radial survey; and
conducting an operation with the downhole operational device at the desired orientation.
1 Assignment
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Accused Products
Abstract
Methods of generating radial survey images of a borehole and methods of orienting downhole operational tools are disclosed. The disclosed techniques are used to generate a radial survey of the borehole in the form of one or more rose-plots and/or a radial image of the borehole and surrounding area that can be used to properly orient downhole operational tools in the desired direction. The tool string includes, from the top to bottom, a telemetry module, a non-rotating centralizer, a motor module, an imaging sonde used to survey the borehole, a rotating centralizer and a downhole operational tool. The motor module can be used to rotate the imaging sonde to generate the radial survey and then rotate the downhole operational tool to the desired direction based upon a review of the radial survey.
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Citations
20 Claims
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1. A method of orienting a downhole operational device in a borehole, comprising:
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running a tool string into the borehole to a predetermined depth, the tool string including an imaging device, a motor module, and the downhole operational device; imaging the borehole at the predetermined depth with the imaging device while rotating the imaging device about an axis of the tool string with the motor module to provide a radial survey of the borehole at the predetermined depth; rotating the downhole operational device about the axis of the tool string to a desired orientation with the motor module based on the radial survey; and conducting an operation with the downhole operational device at the desired orientation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10)
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11. An oriented tool string for use in a borehole, the tool string comprising:
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an imaging device, a motor module, and a downhole operational device; the motor module capable of rotating the imaging device about an axis of the tool string to provide a radial survey of the borehole at a predetermined depth using data obtained from the imaging device; the motor module rotating the downhole operational device about the axis of the tool string to a desired orientation based on the radial survey; wherein the downhole operational device is selected from the group consisting of a whipstock, a pipe cutter, a segment cutter, a split-shot, a chemical cutter, a shot-stick, a reentry nose, a perforating gun, a core sample taker, a tubing puncher, a directional flow meter, a directional temperature probe, a directional pressure probe, a fluid sampler, a focused nuclear tool, a stuck-point indicator, a focused video camera sonde; and wherein the imaging device is selected from the group consisting of a focused electromagnetic device, a focused acoustic device, a focused nuclear device and combinations thereof. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A radial survey log of a borehole at a predetermined depth, the log comprising:
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an azimuth of the borehole, an indication of a rotational orientation of an imaging tool used to create the radial survey log, and a composite image of the borehole, the surrounding radial area, and the material or equipment disposed within the borehole.
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19. A method of measuring a magnetic anisotropy of a borehole at a predetermined depth, the method comprising:
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lowering a tool string down the borehole to the predetermined depth, the tool comprising a magnetometer device, a motor module and a downhole operational device; the motor module capable of rotating the magnetometer device about an axis of the tool string to provide a stationary radial magnetic survey of the borehole at the predetermined depth using data obtained from the magnetometer device. - View Dependent Claims (20)
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Specification