关键技术进步促进页岩气产业快速发展——以长宁—威远国家级页岩气示范区为例

发布时间：2018-04-11 17:06

本文选题：四川盆地南部 + 早志留世　；参考：《天然气工业》2017年12期

【摘要】：四川盆地南部地区下志留统龙马溪组页岩气资源量巨大,但较之于北美地区的页岩气田,前者的地质条件复杂、地面条件较差,因而对川南地区页岩气勘探开发技术的要求就更高。为了实现页岩气工业化大规模开采,必须形成适应于川南地区的页岩气勘探开发关键技术。为此,在长宁—威远国家级页岩气示范区建设过程中,通过不懈探索和持续攻关,从无到有,创新建立了适合我国南方多期构造演化海相页岩气勘探开发的6项关键技术——综合地质评价技术、开发优化技术、水平井优快钻井技术、水平井体积压裂技术、丛式井工厂化作业技术以及高效清洁开采技术。该系列技术在上述页岩气示范区产能建设过程中,历经三轮优化调整,产能建设效果一轮比一轮好,平均单井评估最终可采页岩气储量(EUR)逐步提高,第三轮井均EUR比第一轮提升了128%。生产实践表明,上述页岩气示范区建设过程中持续优化完善了6项关键技术,使其技术适应性和可复制性不断增强,为川南页岩气快速上产提供了有力的技术支撑。
[Abstract]:The shale gas resources of the Lower Silurian Longmaxi formation in the southern part of Sichuan Basin are huge, but compared with the shale gas fields in North America, the former has complex geological conditions and poor surface conditions.Therefore, the requirements for shale gas exploration and development technology in southern Sichuan are even higher.In order to realize the large-scale exploitation of shale gas, it is necessary to form the key technology of shale gas exploration and development suitable for southern Sichuan.Therefore, in the process of construction of Changning-Weiyuan National Shale Gas demonstration Zone, through unremitting exploration and continuous tackling of key problems, from scratch to existence,Six key technologies suitable for marine shale gas exploration and development in southern China, I. e., comprehensive geological evaluation technology, development optimization technology, horizontal well high speed drilling technology, horizontal well volume fracturing technology, have been established innovatively.Cluster well factory operation technology and efficient clean mining technology.In the process of production capacity construction in the above-mentioned shale gas demonstration area, this series of technologies has undergone three rounds of optimization and adjustment. The effect of the production capacity construction is better than that of one round, and the average single well evaluation of the final recoverable shale gas reserves is gradually improved.The third round of wells per EUR than the first round of 128.The production practice shows that 6 key technologies have been continuously optimized and perfected during the construction of the shale gas demonstration area mentioned above, which makes their technical adaptability and reproducibility continuously enhanced, and provides a strong technical support for the rapid increase of shale gas production in southern Sichuan.
【作者单位】：中国石油西南油气田公司;
【基金】：国家科技重大专项“大型油气田及煤层气开发”下属项目“长宁—威远页岩气开发示范工程”(编号:2016ZX05062) 中国石油天然气股份有限公司重大科技专项(编号:2016E—0611)
【分类号】：TE37

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