Cascade method and apparatus for providing engineered...

Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system – Fluid

Utility Patent

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C702S009000, C702S006000, C702S011000

Utility Patent

active

06169967

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a well programming process, and more particularly, to a method and apparatus for providing engineered bit solutions for a well programming process, relating to the rock formation drilling industry.
2. Discussion of the Related Art
Rock bit manufacturing companies have traditionally provided product lines which involve maintaining large inventories of rock bits with the hope that one of those bit designs would best match a customer's application and, thus, solve the customer's problem. Often, however, the incorrect product was selected, applied incorrectly, and any lessons to be learned were ignored. In the late 1980's, Shell Oil Company defined “Drilling in the Nineties” where the Shell Oil Company concluded that it would be advantageous for operators to reach agreements with service companies for a more integrated approach. As a result, operators teamed up with single bit suppliers and limited their vision to the products supplied solely by that one supplier. In view of the teaming up with one supplier, many solutions being developed by other bit manufacturers were not considered or evaluated.
In addition to the above, at a most basic level, a provider of drilling bits is a product-oriented provider, focusing on providing products to the market place. In short, the drilling bit provider designs, manufactures and sells rock bits. Rock bits have traditionally been centrally developed (i.e., at a central location of the bit provider), built, placed in inventory, and then sold substantially as “off the shelf products.” Customers (i.e., drilling operators) would use IADC classifications charts to determine and select the bits which the customer believed would be best suited for their specific drilling needs. Each manufacturer of drill bits was responsible for assigning the IADC codes to the bits they designed. As a result, many bits were built simply to fit into a specific IADC code slot. Large inventories of rock bits were required to ensure that any one particular area had enough stock of each IADC code. In addition, bits were designed at the central manufacturing facility, including typically, a specific soft or hard formation design developed for worldwide use. For example, an IADC 517X(S84F) bit originally designed for drilling in South Texas has also been shipped for use in the North Sea or in Southeast Asia, as a standard practice, despite the fact that the bit was not designed for use at either of the later locations.
SUMMARY OF THE INVENTION
The method and apparatus of the present disclosure advantageously provide for an improved engineering of a drilling bit program which overcomes problems in the art as discussed herein.
According to one embodiment, a method for engineering a drilling bit program linked to rock removal at a cutting element/formation interface and specific to drilling of one or more wells in a given geographic area includes the following steps. A first step includes planning the drilling of a particular well based upon a cascaded planning input and providing an engineered output which is a function of the cascaded planning input, a level of the engineered output being dependent upon a level of the cascaded planning input. A second step includes implementing the engineered output in the drilling of the particular well. Lastly, a third step includes evaluating the implementation of the engineered output for the drilling of the particular well and providing an evaluation output. The evaluation output can be used in the planning step as additional planning input for planning the drilling of a subsequent well in the geographic area.
According to another embodiment, a system for engineering a drilling bit program linked to rock removal at a cutting element/formation interface and specific to drilling of one or more wells in a given geographic area includes a first means for planning the drilling of a particular well based upon a cascaded planning input and providing an engineered output which is a function of the cascaded planning input, a level of the engineered output being dependent upon a level of the cascaded planning input. A second means is provided for implementing the engineered output in the drilling of the particular well. Lastly, a third means is provided for evaluating the implementation of the engineered output for the drilling of the particular well and providing an evaluation output, wherein the evaluation output can be used by the planning means as additional planning input for planning the drilling of a subsequent well in the geographic area.


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