During the test of Ku1 well in Da Zhangtuo underground gas storage tank, MHS packer is blocked and set in stagecollar of deviated section.
大张坨地下储气库库1井试油，MHS封隔器在斜井段分级箍时遇阻坐封。
2
The features of buried hill reservoir are described, and the use of two-stage cementing method, continuous open stagecollar and cement basket is also presented.
文中介绍了潜山油藏特点及采用二级注水泥方法，采用连续打开式分级箍、水泥伞。
3
Bagging out garment sections such as collar, cuffs and pocket flaps is the next stage in the development where technique is required for stitching around the corner.