Sampling methods used in operation should not interfere with zone protection. Results from monitoring should be considered when reviewing batch documentation for finished product release.

Through analyzing the influences of information factors, measure of oil pay zone protection, injection, completion and fracture to improve development effects and enhance economic benefit.

For the first two or three months at her new job, she spent most of her spare time exploring every corner of this "cultural relic protection zone," an area of a little over two square kilometers.