Company Filing History:
Years Active: 1986-1987
Title: Innovations by James D. Ashford in Well Treatment Methods
Introduction
James D. Ashford is an accomplished inventor based in Anchorage, AK (US). He holds 2 patents that focus on innovative methods for well treatment, particularly in the oil and gas industry. His work has significantly contributed to improving the efficiency and effectiveness of well operations.
Latest Patents
One of Ashford's latest patents is a well treatment method using sodium silicate to seal formations. This method involves a squeeze silicate operation carried out through coiled tubing to seal upper perforations in a well casing, preventing the flow of excess gas. The sodium silicate mixture used contains a diverter material that rapidly builds a filter cake on the formation as the silicate is squeezed through the perforations. This filter cake forms a barrier that effectively limits the depth of penetration of the silicate while providing a good seal against flow through the squeezed perforations.
Another significant patent by Ashford is a squeeze cement method using coiled tubing. This method allows for the well tubing to remain in place, eliminating the need for a workover rig. It requires a smaller volume of squeeze cement and allows for precise control of the pressures involved in the squeeze operation, minimizing the risk of fracturing the formation. The process involves isolating the wellbore adjacent to the perforations and using a packing fluid with a density greater than the cement to fill the lower part of the wellbore. After placing the cement, a contaminating liquid is flowed down the coiled tubing to mix with the cement left in the casing, preventing it from setting.
Career Highlights
James D. Ashford is associated with the Atlantic Richfield Company, where he has applied his innovative ideas to enhance well treatment processes. His contributions have been instrumental in advancing the techniques used in the industry.
Collaborations
Ashford has collaborated with notable coworkers, including James K. Eastlack and Gary D. Herring, who have also contributed to the field of well treatment methods.
Conclusion
James D. Ashford's innovative patents in well treatment methods demonstrate his commitment to improving operational efficiency in the oil and gas industry. His work continues to influence practices and technologies in well management.