摘要
瑞13A井是建立一进两出或两进一出的采卤方式采卤的一口绿色矿山采卤对接井,设计井深1138.3 m,实际完钻井深1285 m。主要地层为新统官庄组、丰县组、古近系,主要岩性为粉砂岩、泥岩与泥质胶结为主的细砂岩、泥灰岩。夹有一套含有盐类矿物的沉积岩系,岩石类型主要为氯化物岩、硫酸盐岩(硬石膏、钙芒硝)、碳酸盐岩(白云石)及泥质岩、粉砂岩。施工过程中存在坍塌、掉块、摩擦阻力大、地层易缩径等复杂难题。现场优选了YZ(高效抑制剂)、RH(高效润滑剂)等,形成了饱和盐水强抑制防塌冲洗液体系,密度1.25~1.35 g/cm^(3)可调,润滑系数<0.1,滤失量≤5 mL,流变性能好,抑制防塌效果好,取得了较好应用效果,保证了项目的顺利实施。
Rui 13A is a green mine brine‑mining docking well with one‑in‑two‑out or two‑in‑one‑out brine mining method.The designed well depth is 1138.3m,and the actual drilling depth is 1285m.The main strata are Cenozoic Guanzhuang Formation,Fengxian Formation and Paleogene,and the main lithology is fine sandstone and marl mainly cemented by siltstone,mudstone and argillaceous.There is a set of sedimentary rock series containing salt minerals.The rock types are mainly chloride rock,sulfate rock(anhydrite,glauberite),carbonate rock(dolomite),argillaceous rock and siltstone.In the construction process,there are complex problems such as collapse,falling blocks,and the formation with large friction resistance is easy to shrink in diameter.YZ(high‑efficiency inhibitor),RH(high‑efficiency lubricant),etc.With the adjustment of density,a saturated brine strong anti‑slump flushing fluid system was formed.The fluid loss is≤5 mL,the rheological performance and the anti‑slump inhibition effect are good.It has achieved good application results on site,ensuring the smooth implementation of the project.
作者
于玉
李川
YU Yu;LI Chuan(Chexplor Resource Exploration Technology Co.,Ltd.,Huaibei Anhui 235000,China)
出处
《钻探工程》
2023年第S01期365-370,共6页
Drilling Engineering
关键词
采卤对接井
饱和盐水钻井液
抑制防塌
高密度
绿色矿山
connected brine wells
saturated brine drilling fluid
anti‑slump
high density
green mine
