“保护油气层防止污染的钻井、完井技术”在“七五”期间被列为国家重点科技攻关项目，并取得了重大的科技成果；由于该项成果的社会经济效益显著，成为“八五”期间中国石油天然气总公司实施的三大战略必须依靠的重大技术之一．为保证技技术在全国推广应用，油井完井技术中心 During the “Seventh Five-Year Plan” period, the “Drilling and Completion Technology for Preventing Oil and Gas Pollution from Preventing Contamination” was listed as a national key scientific and technological project and achieved significant scientific and technological achievements. Due to the remarkable social and economic benefits of the outcome, "During the implementation of the three major strategies China National Petroleum Corporation must rely on one of the major technologies. To ensure that technology in the country to promote the use of well completion technology center