In July 2006, WesternGeco re-established its land seismic acquisition presence in North America with Crew 1752. At the same time, Crew 1752 introduced the Q-Land single-sensor acquisition system to North America. The Q-Land system is capable of recording up to 40,000 single-sensor channels, allowing the accurate sampling of both seismic signal and noise. This technology has allowed the crew to produce high-quality seismic images in areas where conventionally equipped crews had failed.
Q-Xpress uses integrated seismic data acquisition and processing workflows for near-real-time seismic data analysis. This enables the crew to efficiently handle the huge data volumes involved in processing 25,000+ channels of uncorrelated vibroseis data at a 2-ms sample rate, and at the same time, dramatically reduce turnaround.
The crew has experience working in a variety of land permitting environments including extensive interaction with the Bureau of Land Management and private land ownership. Following strict quality, health, safety, and environment (QHSE) business procedures, the crew has complied with numerous federal, state, and local environmental laws and regulations. An essential part of the crew's operation and QHSE procedures is its ability to communicate. The crew uses VSAT technology and WesternGeco global support (GOS) technical experts and engineers who are available 24 hours a day. Remote connectivity and login to the Q-Land system is available for GOS experts to assist with technical issues, updates, and other crew needs.
The crew is closely affiliated with major WesternGeco Data Processing Centers in Houston and Denver. A constant exchange of seismic data and information with these centers has resulted in continuous improvements in processing flows and techniques.
The crew has now worked in four states: Texas, New Mexico, Colorado, and California. The first project was in Pecos, Texas (Reeves-Loving), covering 150 square miles. This project proved troublesome mainly due to wildlife—rats. During and after this project, the crew made it a priority to resolve the issue of equipment damaged by rodents. The crew performed numerous tests to help prevent the damage. For example, one test involved the use of coyote urine, which was sprayed onto some of the ground equipment. This proved not to repel rodents, but it did make it very disagreeable to handle the equipment! With the help of Schlumberger engineers and a number of subcontractors, the crew performed many further tests and has now developed rat-proof wire!
Also in Texas, the crew took part in an Integrated Project Management (IPM) project with Schlumberger Wireline and Completions groups, and also carried out a microseismic survey that has contributed to R&D advancements within Schlumberger.
In New Mexico, a 96 square mile 3D project, known as Chavez-West Eddy, was awarded to Crew 1752. While in production in New Mexico, another small job was awarded to the crew, known as Elk Hills, in Taft, California. To take on the Elk Hills job, the crew was briefly split and managed to carry out the two jobs simultaneously, keeping both on schedule—a great example of the 'can-do' attitude of this crew. The Elk Hills project was the first time that the Q-Land system had been used with an explosive source on a commercial project.
Crew 1752 is currently working on Phase II of the Chavez-West Eddy project. Word of the success of Q-Land is now spreading throughout the North America E&P industry. After a tough start in Texas, Crew 1752 has persevered, gained in strength, and become known for acquiring very impressive, high-volume, high-quality, single-sensor seismic data.
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