Drilling System for Making LWD Measurements Ahead of the Bit
First Claim
1. A drilling system comprising:
- a drill bit including a drill bit body having a plurality of cutting elements and at least a first logging while drilling sensor deployed therein;
a logging while drilling tool including a logging while drilling tool body having at least a second logging while drilling sensor deployed therein;
wherein the drill bit body and the logging while drilling tool body are integral with one another.
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Accused Products
Abstract
A drilling system includes integral drill bit body and logging while drilling tool body portions. There are no threads between the drill bit and the LWD tool. In one exemplary embodiment the drilling system includes a unitary tool body, i.e., a tool body formed from a single work piece. In another exemplary embodiment the drill bit body portion is welded to the LWD tool body portion. At least one LWD sensor is deployed in the drill bit. The drilling system enables multiple LWD sensors to be deployed in and near the bit (e.g., on both the side and bottom faces of the bit). The absence a threaded connection facilitates the placement of electrical connectors, LWD sensors, and electronic control circuitry at the bit.
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Citations
31 Claims
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1. A drilling system comprising:
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a drill bit including a drill bit body having a plurality of cutting elements and at least a first logging while drilling sensor deployed therein; a logging while drilling tool including a logging while drilling tool body having at least a second logging while drilling sensor deployed therein; wherein the drill bit body and the logging while drilling tool body are integral with one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A drilling system comprising:
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a drill bit including a drill bit body having a plurality of cutting blades formed on a cutting face thereof, each of the cutting blades including a plurality of cutting elements deployed thereon, the drill bit further including at least one current measuring electrode deployed on one of the cutting blades; a logging while drilling tool including a logging while drilling tool body having a transmitter deployed thereon, the transmitter configured to induce an AC voltage difference in the tool body on opposing axial ends of the transmitter; wherein the drill bit body and the logging while drilling tool body are integral with one another. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A drilling tool comprising:
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an integral tool body including a drill bit body portion integral with a logging while drilling body portion; and at least one logging while drilling sensor deployed in the drill bit body portion. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A method for fabricating a drilling system;
- the method comprising;
(a) forming a drilling system tool body having a drill bit body portion and a logging while drilling body portion, the drill bit body portion being integral with the logging while drilling tool body portion; (b) deploying at least one logging while drilling sensor on the drill bit body portion; and (c) deploying at least one other logging while drilling sensor on the logging while drilling tool body. - View Dependent Claims (29, 30, 31)
- the method comprising;
Specification