Application of Factory Drilling Technology in Block Su 53
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摘要: 苏里格气田是典型的低压、低渗透、低丰度致密砂岩气藏，储层物性差，单井产量低，经济效益差。为提高该气田的开发效果和经济效益，通过不断探索和实践，结合储层特点和钻井作业条件，建立了一套适合该气田的以"方案设计最优化、工程技术模板化、施工作业流程化、作业规程标准化、资源利用综合化和队伍管理一体化"为核心的"井工厂"作业模式。方案设计最优化包括地质方案、钻井方案和压裂方案的优化；工程技术模板化包含"1+2+2"钻头选型及与之相配套的技术模板；施工作业流程化就是按照流程批量钻不同井段和分批次进行连续压裂作业；作业规程标准化是为工厂化钻完井与压裂制订标准化的作业规程。"井工厂"作业提高了苏53区块的作业效率，缩短了钻井周期，节约了生产成本，仅用210 d就完成了一个平台13口井（10口水平井、2口定向井和1口直井）的征地建井场、钻井、完井、压裂、试气和投产等工作，而且13口井经过大规模同步体积压裂改造，有效地提高了单井产量。Abstract: Sulige Gas Field is a typical tight gas reservoir,which displays poor physical properties such as low-pressure,low-permeability,low-abundance,low production rate for single well,and poor economics.To improve production and economic benefit,combined the gas-bearing characteristics with the drilling conditions,and through continuous explorations and practices,an applicable "factory drilling" model was instituted.In this case,"factory drilling" involved optimizing design of exploration and drilling operations,streamlining engineering,launching an assembly-line drilling operation,standardizing regulations,establishing a comprehensive utilization of resources and uniform and integrated crew management as its foundation.The optimized design included geology,drilling and fracturing design.The engineering module included the PDC bit selection and matched technical modules.Assembly-line drilling operation involves batch drilling in the same section and continuous fracturing according to the situation.Standardized regulations involve the rules and protocols for factory drilling,completion and fracturing.Factory drilling increased the operation efficiency,shortened the drilling period and reduced costs in Block Su 53.The operation of well site construction,drilling,completion,fracturing,gas testing and production for 13 wells(10 horizontal wells,two directional wells and one vertical well)from one pad was finished in only 210 days.The single well recovery for 13 wells was increased significantlyusing the factory approach after large-volume simultaneous hydraulic fracturing.
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Keywords:
- tight sands /
- factory drilling /
- drilling /
- synchronous fracturing /
- Block Su 53
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