drilling accident造句

• 6 . every member and formation are primarily evaluated by petrophysics, drilling accidents and gas show in dagang oilfield . we conclude that the lower fengfeng formation and the first member of upper majiagou formation are of better quality, and the other members are non-reservoir
  10、根据储层物性、钻井漏失、放空、油气显示、沉积相等多方面资料，对不同组段储层进行初步评价，认为峰峰组下部和上马家沟组上段储层较好，其余组段储层较差。