William C Larson

Title: Innovations by William C Larson

Introduction

William C Larson is a notable inventor based in Bloomington, MN (US). He has made significant contributions to the field of mining technology, holding a total of five patents. His work primarily focuses on methods and apparatuses that enhance the efficiency of underground mining operations.

Latest Patents

One of Larson's latest patents is titled "Method and apparatus to complete horizontal drain holes." This invention provides a method and the necessary equipment to form horizontal cased and perforated drainholes for underground, in situ leach mining operations. The process begins with the formation and casing of a vertical hole in the earth, followed by drilling horizontal drainholes from below its casing. The depth and thickness of the ore body to be recovered are determined, and the whipstock orientation is computed to facilitate drilling into the ore bed. A flexible casing, such as Coflexip pipe, is utilized to case the drainholes, which are pre-perforated before being installed underground. Additionally, a special retrievable cement plug, basket, and one-way valve are employed to control the flow of cement during the operation.

Another significant patent by Larson is "Multiple branch completion with common drilling and casing template." This invention addresses the drilling and completion of multiple branch wells extending from a main vertical hole, particularly applicable in in situ leach mining of deep ore bodies like uranium and copper. The main vertical hole is drilled, cased, and cemented, with whipstock drilling guides placed to extend from the bottom of the casing. The drilling of branch wells is accomplished using a floating index collar and a drill bit assembly, ensuring precise orientation for drilling into the whipstock guides. After drilling, the branch wells are cased with flexible materials, cemented, and selectively perforated.

Career Highlights

Throughout his career, Larson has worked with various organizations, including the United States of America, as represented by the Secretary of the Interior. His innovative approaches have significantly impacted the mining industry, particularly in enhancing the efficiency of resource extraction.

Collaborations

Larson has collaborated with notable individuals such as Edward T Wood and Donald W Dareing. Their combined expertise has contributed to the successful development of his patented technologies.

Conclusion

William C Larson's contributions to mining technology through his innovative patents demonstrate his commitment to improving operational efficiency in the industry. His work continues to influence modern mining practices and