实现致密气高效开发的气体钻井技术  

Gas Drilling Technology for Achieving Efficient Development of Tight Gas

作　　者：孟英峰 MENG Yingfeng(National Key Laboratory of Oil and Gas Reservoir Geology and Exploration,Chengdu,Sichuan 610500,China;Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]油气藏地质及开发工程全国重点实验室,成都市610500 [2]西南石油大学

出　　处：《钻采工艺》2024年第1期1-15,共15页Drilling & Production Technology

摘　　要：对钻井、完井、压裂都是水基工作液的技术体系,在中国大多数致密砂岩储层中都存在无法回避、无法消除的严重、甚至致命的水锁伤害,从而导致低产低效、甚至开发失败,即便是目前热门的水平井分段压裂技术,也由于水锁伤害而偏于高成本、低效益。目前,气体钻井是彻底消除水锁伤害的唯一方法。文章通过分析致密气地质特征及在勘探开发中的储层伤害,指出了气体钻井技术在致密气勘探开发中的优势,倡导在致密气勘探开发过程中采用气体钻井技术以提高对储层的发现和开发。以塔里木DX1井为范例,展示了气体钻井技术用于致密气的勘探;以四川盆地气体钻直井、斜井、水平井为范例,展示了气体钻井技术用于浅层致密气的开发;以塔里木DB104井为范例,展示了气体钻井技术用于深层致密气的开发。文章最后指出,气体钻井用于致密气的勘探与开发,属于刚刚起步的探索性新技术,尚有诸多技术难题有待解决,尤其是气体钻水平井的配套技术,但这些技术在目前的科技、工业水平下应该是可以解决的,需要的是关注、投入和坚持。The serious and even fatal water lock damage cannot be avoided or eliminated at tightsand reservoirs in China by using the technology system of drilling,completion and fracturing are all with water-based fluids.This leads to low production and low efficiency,and even development failure.Even the popular horizontal well segmented fracturing technology also cost lot with low benefit due to water lock damage.Currently,gas drilling is the only way to completely eliminate water lock damage.By analyzing the geological characteristics of tight gas and the reservoir damage during exploration and development,this paper points out the advantages of gas drilling technology in tight gas exploration and development,and advocates the use of gas drilling technology in tight gas exploration and development to improve the discovery and development of reservoirs.Taking the well of Tarim DX1 as an example,the gas drilling technology for tight gas exploration is demonstrated.Taking Sichuan Basin gas drilling vertical wells,inclined wells,and horizontal wells as examples,the gas drilling technology used for shallow tight gas development is demonstrated.Taking Tarim DB104 well as an example,gas drilling technology for deep tight gas development is demonstrated.Finally,it is pointed out that gas drilling is a new technology for exploration and development of tight gas,and there are still many technical problems to be solved,especially the matching technology of gas drilling in horizontal wells.However,these technologies should be solvable at the current level of science and technology and industry,and what is needed is attention,input and persistence.

关 键 词：致密气 勘探开发 水力压裂 气体钻井技术 

分 类 号：TE242[石油与天然气工程—油气井工程]